Large-diameter long-distance intelligent heat-insulation combined pipeline structure and construction method thereof
阅读说明：本技术 大直径长输智能化保温组合管道结构及其施工方法 (Large-diameter long-distance intelligent heat-insulation combined pipeline structure and construction method thereof ) 是由 计静 梁媛 薛婷 卢召红 姜良芹 石磊 于 2019-09-18 设计创作，主要内容包括：一种大直径长输智能化保温组合管道结构及其施工方法,涉及管道技术领域,它包括管道单体和整体式节点,管道单体包括外层GFRP圆管、内层GFRP圆管、自密实细石混凝土层和环形传热板,管道单体两端部设有螺栓孔；外层GFRP圆管外壁上设有外层GFRP圆管预留螺栓孔和导热管安装孔,导热管安装孔外安装钢锚架,钢锚架上设有控温装置,控温装置与环形传热板连接；两个管道单体之间通过整体式节点连接,整体式节点通过高强螺栓与两个管道单体连接,整体式节点外壁上设有混凝土浇筑孔和排气孔,混凝土浇筑孔和排气孔间隔分布。本大直径长输智能化保温组合管道结构及其施工方法解决了传统管道直径小、稳定性、抗渗性差和高严寒地区输送介质保温性能差的问题。(A major diameter long-distance intelligent heat preservation combined pipeline structure and a construction method thereof relate to the technical field of pipelines and comprise a pipeline monomer and an integral node, wherein the pipeline monomer comprises an outer layer GFRP circular pipe, an inner layer GFRP circular pipe, a self-compaction fine stone concrete layer and an annular heat transfer plate, and bolt holes are arranged at two end parts of the pipeline monomer; the outer wall of the outer-layer GFRP circular pipe is provided with an outer-layer GFRP circular pipe reserved bolt hole and a heat conduction pipe mounting hole, a steel anchor frame is mounted outside the heat conduction pipe mounting hole, a temperature control device is arranged on the steel anchor frame, and the temperature control device is connected with the annular heat transfer plate; through integral nodal connection between two pipeline monomers, integral node is connected with two pipeline monomers through high strength bolt, is equipped with concrete placement hole and exhaust hole on the integral node outer wall, concrete placement hole and exhaust hole interval distribution. The large-diameter long-distance intelligent heat-preservation combined pipeline structure and the construction method thereof solve the problems of small diameter, poor stability and impermeability and poor heat preservation performance of the traditional pipeline for conveying media in high and severe cold areas.)
1. The utility model provides an intelligent heat preservation composite pipe structure is failed to major diameter length which characterized in that: the self-compaction joint comprises a pipeline monomer (1) and an integral joint (4), wherein the pipeline monomer (1) comprises an outer GFRP circular pipe (12), an inner GFRP circular pipe (13), a self-compaction pea gravel concrete layer (23) and an annular heat transfer plate (14), a plurality of shear-resistant connecting keys (5) are uniformly distributed on the inner wall of the outer GFRP circular pipe (12) in the circumferential direction, the outer GFRP circular pipe (12) internally surrounds the inner GFRP circular pipe (13), an interlayer is arranged between the outer GFRP circular pipe (12) and the inner GFRP circular pipe (13), the annular heat transfer plate (14) is arranged in the interlayer, the self-compaction pea concrete layer (23) is filled between the annular heat transfer plate (14) and the pipe wall, a plurality of GFRP high-strength bolts (7) are uniformly distributed on the outer wall of the inner GFRP circular pipe (13) in the circumferential direction, the GFRP high-strength bolts (7) fix the annular heat transfer plate (14) and the inner GFRP circular pipe (13) through double positioning, the bolt holes (6) penetrate through the outer layer GFRP circular tube (12), the inner layer GFRP circular tube (13), the self-compacting fine stone concrete layer (23) and the annular heat transfer plate (14); the outer wall of the outer layer GFRP circular pipe (12) is provided with an outer layer GFRP circular pipe reserved bolt hole (28) and a heat conduction pipe mounting hole (22), a steel anchor frame (21) is mounted outside the heat conduction pipe mounting hole (22), a temperature control device is arranged on the steel anchor frame (21), and the temperature control device is connected with the annular heat transfer plate (14); connect through integral node (4) between two pipeline monomer (1), integral node (4) are connected through bolt hole (6) of high strength bolt (8) and two pipeline monomer (1) tip, are equipped with concrete placement hole (10) and exhaust hole (11) on integral node (4) outer wall, and concrete placement hole (10) and exhaust hole (11) interval distribution.
2. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 1, characterized in that: integral node (4) include outer GFRP pipe (12), inlayer GFRP pipe (13), self-compaction pea gravel concrete layer (23) and annular heat transfer plate (14), outer GFRP pipe (12) inner wall circumference equipartition distributes has a plurality of shear connector (5), outer GFRP pipe (12) inner ring is around inlayer GFRP pipe (13), be equipped with the intermediate layer between outer GFRP pipe (12) and inlayer GFRP pipe (13), be equipped with annular heat transfer plate (14) in the intermediate layer, be full of self-compaction pea gravel concrete layer (23) between annular heat transfer plate (14) and the pipe wall, inlayer GFRP pipe (13) outer wall circumference equipartition distribute a plurality of GFRP high-strength bolt (7), GFRP high-strength bolt (7) are fixed with inlayer GFRP pipe (13) with annular heat transfer plate (14) through two set nut (9).
3. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 2, characterized in that: the outer diameter of the inner GFRP circular tube (13) of the integral node (4) is equal to the inner diameter of the inner GFRP circular tube (13) of the pipeline single body (1); the inner diameter of the outer GFRP circular tube (12) of the integral node (4) is equal to the outer diameter of the outer GFRP circular tube (12) of the pipeline single body (1).
4. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 2, characterized in that: concrete pouring holes (10) and exhaust holes (11) are formed in the outer wall of an outer GFRP circular pipe (12) of the integral node (4), and the concrete pouring holes (10) and the exhaust holes (11) are distributed at intervals; the annular heat transfer plate (14) of the integral joint (4) is also provided with a concrete pouring hole (10) and an exhaust hole (11), and the concrete pouring hole (10) and the exhaust hole (11) are in one-to-one correspondence in the upper and lower positions.
5. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 1, characterized in that: temperature regulating device include solar photovoltaic electroplax (15), electric heat converter (16), conductor wire (17) and heat pipe (18), solar photovoltaic electroplax (15) are connected with electric heat converter (16) through conductor wire (17), electric heat converter (16) are connected with annular heat transfer plate (14) through heat pipe (18), conductor wire (17) and heat pipe (18) outer cover respectively have last round steel pipe to maintain structure (19) and round steel pipe down and maintain structure (20), round steel pipe is maintained structure (20) down and is fixed in on pipeline monomer (1) outer wall through steel anchor frame (21).
6. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 5, characterized in that: the upper part of the lower round steel tube maintenance structure (20), the electric heating converter (16), the upper round steel tube maintenance structure (19) and the solar photovoltaic panel (15) are located on the ground (27).
7. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 1, characterized in that: the single pipeline (1) is a single pipe with a circular section; the outer layer GFRP circular tube (12) and the inner layer GFRP circular tube (13) are seamless winding type GFRP circular tubes.
8. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 1, characterized in that: the pipeline monomer (1) is one of a linear pipeline monomer, a curved pipeline monomer (2) or a crossing pipeline monomer (3).
9. The large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 1, characterized in that: GFRP anti-buckling energy-dissipation dampers (25) are horizontally and symmetrically arranged on the side face of the pipeline single body (1), one end of each GFRP anti-buckling energy-dissipation damper (25) is connected with the outer wall of the pipeline single body (1) through a claw-type connecting piece (24), and the other end of each GFRP anti-buckling energy-dissipation damper (24) is hinged to a foundation (26); one end of the claw type connecting piece (24) is provided with a circular ring and is hinged with the GFRP buckling-restrained energy dissipation damper (25), the other end of the claw type connecting piece (24) is provided with a reserved bolt hole, and the reserved bolt hole is connected with an outer layer GFRP circular tube reserved bolt hole (28) through a high-strength bolt (8).
10. The construction method of the large-diameter long-distance intelligent heat-preservation combined pipeline structure according to claim 1 is characterized in that: the method comprises the following steps:
firstly prefabricating a combined pipeline monomer (1) in a factory, manufacturing an inner layer GFRP circular pipe (13), an outer layer GFRP circular pipe (12), a shear-resistant connecting key (5), a GFRP high-strength bolt (7), a double positioning nut (9) matched with the GFRP high-strength bolt (7), an annular heat transfer plate (14), a claw type connecting piece (24), a steel anchor frame (21) and a temperature control device according to the size requirement, arranging the GFRP high-strength bolt (7) on the inner layer GFRP circular pipe (13), reserving bolt holes on the annular heat transfer plate (14), enabling the bolt holes to correspond to the GFRP high-strength bolt (7) on the inner layer GFRP circular pipe (13), then adopting the double positioning nut (9) to fixedly connect the annular heat transfer plate (14) with the inner layer GFRP circular pipe (13), arranging the shear-resistant connecting key (5) on the inner side of the outer layer GFRP circular pipe (12), reserving bolt holes (6) at two end parts of the inner and outer layer GFRP circular pipes, reserving bolt holes (28) at the designed positions on the outer Pipe mounting holes (22), connecting and fixing a claw type connecting piece (24) and a steel anchor frame (21) with an outer GFRP circular pipe (12) through a high-strength bolt (8), concentrically and vertically placing an inner GFRP circular pipe (13) with an annular heat transfer plate (14) in the outer GFRP circular pipe (12), connecting a heat conduction pipe (18) with the annular heat transfer plate (14) between the inner GFRP circular pipe and the outer GFRP circular pipe through the heat conduction pipe mounting holes (22), welding a lower round steel pipe maintenance structure (20) on the steel anchor frame (21), leading out the heat conduction pipe (18) through a lower round steel pipe maintenance structure (20), screwing the high-strength bolts (8) at two ends, then simultaneously filling a self-compacting fine stone concrete layer (23) among the annular heat transfer plate (14), the inner GFRP circular pipe (13) and the outer GFRP circular pipe (12) from top to bottom, loosening and repeatedly twisting the high-strength bolts after initial concrete setting to form bolt holes, forming a combined pipeline monomer (1) after maintenance;
an inner layer GFRP circular tube (13), an outer layer GFRP circular tube (12) and an annular heat transfer plate (14) for forming an integral node (4) are prefabricated in a factory, GFRP high-strength bolts (7) are arranged on the inner layer GFRP circular tube (13) of the integral node (4), bolt holes are reserved in the annular heat transfer plate (14) of the integral node (4) and correspond to the GFRP high-strength bolts (7) on the inner layer GFRP circular tube (13), then the annular heat transfer plate (14) and the inner layer GFRP circular tube (13) are fixedly connected through double positioning nuts (9), a shear-resistant connecting key (5) is arranged on the inner side of the outer layer GFRP circular tube (12) of the integral node (4), bolt holes (6) are reserved at two end portions of the inner layer GFRP circular tube and the outer layer GFRP circular tube, concrete pouring holes (10) and exhaust holes (11) are reserved at the top portion of the outer layer GFRP circular tube (12) of the integral node (4), and concrete pouring holes are reserved at corresponding positions on the annular heat (10) And an exhaust hole (11);
transporting the prefabricated pipe single body (1) and the inner GFRP circular pipe (13), the outer GFRP circular pipe (12) and the annular heat transfer plate (14) of the integral node (4) to a site, arranging the pipe single body (1) on site soil, then placing the inner GFRP circular pipe (13) and the annular heat transfer plate (14) which are connected and fixed with the integral node (4) into the outer GFRP circular pipe (12), concentrically inserting the pipe single body (1) and the pipe single body (1) into the pipe single body, fixedly connecting the pipe single body (1) and the integral node (4) without concrete pouring by using a high-strength bolt (8), then pouring the stirred self-compacting fine stone concrete between the annular heat transfer plate (14) of the integral node (4) and the inner GFRP circular pipe (13) by using a concrete pump through a concrete pouring hole (10) on the annular heat transfer plate (14), and stopping pouring when the concrete overflows from an exhaust hole (11) on the annular heat transfer plate (14), then self-compacting fine stone concrete is poured between the annular heat transfer plate (14) of the integral node (4) and the outer layer GFRP circular tube (12) through the concrete pouring hole (10) on the outer layer GFRP circular tube (12), when the concrete overflows from the exhaust hole (11) on the outer layer GFRP circular tube (12), the pouring is stopped, and the pipeline single bodies (1) are sequentially connected by adopting the integral node (4);
the GFRP anti-buckling energy dissipation damper (25) is prefabricated in a factory, one end of the GFRP anti-buckling energy dissipation damper is connected with a circular ring of a claw type connecting piece (24) on the spot through a high-strength bolt (8), the other end of the GFRP anti-buckling energy dissipation damper is connected with a foundation (26), the two ends of the GFRP anti-buckling energy dissipation damper are hinged in a connection mode, and the GFRP anti-buckling energy dissipation damper (25) is symmetrically arranged at intervals along the direction of a pipeline;
the method is characterized in that an installed lower round steel pipe maintenance structure (20) and a heat conduction pipe (18) are connected with an electric heating converter (16) on site, the electric heating converter (16) is connected with a solar photovoltaic power generation board (15) through an upper round steel pipe maintenance structure (19) and a conductive wire (17), and an intelligent temperature control device is arranged on a pipeline at intervals according to the method, so that the construction of the large-diameter long-distance intelligent heat preservation combined pipeline structure is completed.
The technical field is as follows:
the invention relates to the technical field of pipelines, in particular to a large-diameter long-distance intelligent heat-preservation combined pipeline structure and a construction method thereof.
Background art:
conventional long-distance pipelines are mostly round steel pipe pipelines and reinforced concrete round pipelines, the diameters of the pipelines are mostly within the range of 0.5-1.5 m, one ends of the pipelines adopt the form of enlarged heads, and the pipelines are connected through end sockets. Liquid is conveyed in the steel pipe all the year round, the steel pipe is easy to rust, the effective thickness of the pipe wall can be reduced due to long-term erosion, the rigidity of the pipe wall is reduced, and local buckling is easy to occur under the action of soil and external pressure. Meanwhile, as the inner wall of the pipeline is corroded by liquid, more and more impurities are generated, the quality inspection is difficult to reach the standard, and the pipeline cannot be replaced when the designed service life is reached. The reinforced concrete pipeline is easy to rust under the liquid erosion for a long time, the impermeability of the pipe wall is difficult to ensure, and the leakage phenomenon can be formed for a long time. After the pipeline area experiences slight vibration, the conventional connection of the reinforced concrete pipeline port is easy to loosen, and the tightness of the pipeline is difficult to ensure. Later to avoid pipe leakage, steel pipes were placed in the middle of concrete pipes to form built-in steel pipe concrete composite pipes, which, while increasing the rigidity and strength of the pipes, presented a greater challenge to reliable connections between the pipes. In addition, the heat insulation performance of the steel pipelines is poor, and the steel pipelines cannot insulate the transported gas or liquid in severe cold areas. Later, people began to wrap the thermal insulation material outside the pipeline, but as time goes on, the outer layer thermal insulation material gradually suffers from the erosion and damage of the environment, so that the maintenance and the replacement are needed irregularly, and the maintenance cost of the pipeline is increased unintentionally.
The invention content is as follows:
the invention aims to overcome the defects of the prior art, provides a large-diameter long-distance intelligent heat-insulation combined pipeline structure and a construction method thereof, is used for solving the problems of small diameter, poor stability and impermeability and poor heat insulation performance of a conveying medium in severe cold regions of the traditional pipeline, and also provides a construction method of the large-diameter long-distance intelligent heat-insulation combined pipeline structure system.
The technical scheme adopted by the invention is as follows: the large-diameter long-distance intelligent heat-preservation combined pipeline structure comprises a pipeline monomer and an integral node, wherein the pipeline monomer comprises an outer layer GFRP circular pipe, an inner layer GFRP circular pipe, a self-compaction fine stone concrete layer and an annular heat transfer plate, a plurality of shear-resistant connecting keys are uniformly distributed on the circumferential direction of the inner wall of the outer layer GFRP circular pipe, the inner layer GFRP circular pipe is surrounded in the outer layer GFRP circular pipe, an interlayer is arranged between the outer layer GFRP circular pipe and the inner layer GFRP circular pipe, the annular heat transfer plate is arranged in the interlayer, the self-compaction fine stone concrete layer is filled between the annular heat transfer plate and, a plurality of GFRP high-strength bolts are evenly distributed on the outer wall of the inner-layer GFRP circular tube in the circumferential direction, the GFRP high-strength bolts fix the annular heat transfer plate and the inner-layer GFRP circular tube through double positioning nuts, the two end parts of the pipeline monomer are respectively provided with bolt holes, and the bolt holes penetrate through the outer layer GFRP circular tube, the inner layer GFRP circular tube, the self-compacting fine stone concrete layer and the annular heat transfer plate; the outer wall of the outer layer GFRP circular pipe is provided with an outer layer GFRP circular pipe reserved bolt hole and a heat conduction pipe mounting hole, a steel anchor frame is mounted outside the heat conduction pipe mounting hole, a temperature control device is arranged on the steel anchor frame, and the temperature control device is connected with the annular heat transfer plate; through integral nodal connection between two pipeline monomers, integral node is through the bolt hole connection of high strength bolt and two pipeline monomer tip, is equipped with concrete placement hole and exhaust hole on the integral node outer wall, concrete placement hole and exhaust hole interval distribution.
The integral type node comprises an outer layer GFRP circular tube, an inner layer GFRP circular tube, a self-compaction pea gravel concrete layer and an annular heat transfer plate, wherein a plurality of shear connection keys are uniformly distributed on the inner wall of the outer layer GFRP circular tube in the circumferential direction, the inner layer GFRP circular tube surrounds the outer layer GFRP circular tube, an interlayer is arranged between the outer layer GFRP circular tube and the inner layer GFRP circular tube, the annular heat transfer plate is arranged in the interlayer, the self-compaction pea gravel concrete layer is filled between the annular heat transfer plate and the tube wall, a plurality of GFRP high-strength bolts are uniformly distributed on the outer wall of the inner layer GFRP circular tube in the circumferential direction, and the GFRP high-strength bolts fix the annular.
The outer diameter of the inner GFRP circular pipe of the integral node is equal to the inner diameter of the inner GFRP circular pipe of the pipeline monomer; the inner diameter of the outer layer GFRP circular pipe of the integral node is equal to the outer diameter of the outer layer GFRP circular pipe of the single pipeline.
Concrete pouring holes and exhaust holes are formed in the outer wall of the outer layer GFRP circular tube of the integral node and are distributed at intervals; the annular heat transfer plate of the integral joint is also provided with concrete pouring holes and exhaust holes, and the concrete pouring holes and the exhaust holes are in one-to-one correspondence in the upper and lower positions.
The temperature control device comprises a solar photovoltaic electric plate, an electric heating converter, a conducting wire and a heat conducting pipe, wherein the solar photovoltaic electric plate is connected with the electric heating converter through the conducting wire, the electric heating converter is connected with an annular heat transfer plate through the heat conducting pipe, the conducting wire and the heat conducting pipe are respectively sleeved with an upper round steel pipe maintenance structure and a lower round steel pipe maintenance structure, and the lower round steel pipe maintenance structure is fixed on the outer wall of the pipeline monomer through a steel anchor frame.
The upper part of the lower circular steel tube maintenance structure, the electric heating converter, the upper circular steel tube maintenance structure and the solar photovoltaic panel are located on the ground.
The single pipeline is a single pipe, and the section of the single pipeline is circular; the outer layer GFRP circular tube and the inner layer GFRP circular tube are seamless winding type GFRP circular tubes.
The pipeline monomer is one of a linear pipeline monomer, a curved pipeline monomer or a crossing pipeline monomer.
The lateral surface of the pipeline monomer is horizontally and symmetrically provided with GFRP anti-buckling energy dissipation dampers, one ends of the GFRP anti-buckling energy dissipation dampers are connected with the outer wall of the pipeline monomer through claw-type connecting pieces, and the other ends of the GFRP anti-buckling energy dissipation dampers are hinged with the foundation; one end of the claw type connecting piece is provided with a circular ring and is hinged with the GFRP buckling-restrained energy dissipation damper, the other end of the claw type connecting piece is provided with a reserved bolt hole, and the reserved bolt hole is connected with a reserved bolt hole of an outer-layer GFRP circular tube through a high-strength bolt.
The method comprises the following steps:
1) firstly prefabricating a combined pipeline monomer in a factory, manufacturing an inner layer GFRP circular pipe, an outer layer GFRP circular pipe, a shearing resistant connecting key, a GFRP high-strength bolt, a double positioning nut matched with the GFRP high-strength bolt, an annular heat transfer plate, a claw type connecting piece, a steel anchor frame and a temperature control device according to the size requirement, arranging the GFRP high-strength bolt on the inner layer GFRP circular pipe, reserving bolt holes on the annular heat transfer plate to enable the bolt holes to correspond to the GFRP high-strength bolt on the inner layer GFRP circular pipe, then adopting the double positioning nut to connect and fix the annular heat transfer plate and the inner layer GFRP circular pipe, arranging the shearing resistant connecting key on the inner side of the outer layer GFRP circular pipe, reserving bolt holes at two end parts of the inner layer GFRP circular pipe and the outer layer GFRP circular pipe, reserving bolt holes and heat conduction pipe mounting holes on the outer layer GFRP circular pipe at designed positions, connecting and fixing the claw type connecting piece and the steel anchor frame with the outer layer GFRP circular pipe through the high-strength, connecting a heat conduction pipe with an annular heat transfer plate between an inner layer of GFRP circular pipe and an outer layer of GFRP circular pipe through a heat conduction pipe mounting hole, welding a lower circular steel pipe maintenance structure on a steel anchor frame, leading out the heat conduction pipe through the lower circular steel pipe maintenance structure, screwing high-strength bolts at two ends, then simultaneously pouring a self-compacting fine stone concrete layer among the annular heat transfer plate, the inner layer of GFRP circular pipe and the outer layer of GFRP circular pipe from top to bottom, loosening and repeatedly twisting the high-strength bolts after the concrete is initially set to form bolt holes, and forming a combined pipeline monomer after maintenance;
2) prefabricating an inner layer GFRP circular tube, an outer layer GFRP circular tube and an annular heat transfer plate for forming an integral node in a factory, arranging a GFRP high-strength bolt on the inner layer GFRP circular tube of the integral node, reserving bolt holes on the annular heat transfer plate of the integral node, enabling the bolt holes to correspond to the GFRP high-strength bolt on the inner layer GFRP circular tube, then connecting and fixing the annular heat transfer plate and the inner layer GFRP circular tube through double positioning nuts, arranging a shear-resistant connecting key on the inner side of the outer layer GFRP circular tube of the integral node, reserving bolt holes at two end parts of the inner layer GFRP circular tube and the outer layer GFRP circular tube, reserving a concrete pouring hole and an exhaust hole at the top of the outer layer GFRP circular tube of the integral node, and reserving a concrete pouring hole and an;
3) transporting the prefabricated single pipe and the inner GFRP circular pipe, the outer GFRP circular pipe and the annular heat transfer plate of the integral node to the site, arranging the single pipe on site soil, then placing the inner GFRP circular pipe and the annular heat transfer plate of the integral node which are connected and fixed into the outer GFRP circular pipe, concentrically inserting the single pipe and the integral node which is not cast with concrete into the single pipe, fixedly connecting the single pipe with the integral node which is not cast with concrete by using a high-strength bolt, then using a concrete pump to pour the stirred self-compacting fine stone concrete into the space between the annular heat transfer plate of the integral node and the inner GFRP circular pipe through a concrete pouring hole on the annular heat transfer plate, stopping pouring when the concrete at the exhaust hole on the annular heat transfer plate overflows, and then pouring the self-compacting fine stone concrete into the space between the annular heat transfer plate of the integral node and the outer GFRP circular pipe through the concrete pouring hole on the outer, stopping pouring when concrete at the exhaust hole on the outer layer GFRP circular pipe overflows, and sequentially connecting the pipeline monomers by adopting integral nodes;
4) the GFRP anti-buckling energy dissipation damper is prefabricated in a factory, one end of the GFRP anti-buckling energy dissipation damper is connected with a ring of a claw type connecting piece on site through a high-strength bolt, the other end of the GFRP anti-buckling energy dissipation damper is connected with a foundation, the two ends of the GFRP anti-buckling energy dissipation damper are hinged, and the GFRP anti-buckling energy dissipation damper is symmetrically arranged at intervals along the direction of a pipeline;
5) the method comprises the steps of connecting an installed lower round steel pipe maintenance structure and a heat conduction pipe with an electric heating converter on site, connecting the electric heating converter with a solar photovoltaic power generation plate through an upper round steel pipe maintenance structure and a conductive wire, and arranging an intelligent temperature control device on a pipeline at intervals according to the above mode, so that the construction of the large-diameter long-distance intelligent heat preservation combined pipeline structure is completed.
The invention has the beneficial effects that:
1) the assembly type connection of the pipelines is realized by using local cast-in-place self-compacting concrete, the connection mode of the traditional pipeline is changed, the pipeline can have good long-term tightness and is durable, and the requirement of the design service life is met;
2) the combined section form of GFRP and self-compacting concrete is adopted, the mechanical properties of two materials are fully utilized, the bearing capacity and the stability of the pipeline are greatly improved, and the self-compacting concrete is suitable for a conveying pipeline with a large pipe diameter;
3) the GFRP buckling-restrained energy-dissipation damper is adopted, so that the fixing connection effect can be achieved, the energy-dissipation and shock-absorption effects can be achieved during an earthquake, and the anti-seismic performance of the pipeline is improved;
4) the adopted GFRP circular tube non-metal material has high tensile strength, light weight, good construction manufacturability, good corrosion resistance, insensitivity to temperature change and good heat insulation, is convenient to be applied in high-stringency cold regions and saline-alkali regions, can convey liquid and gas which cannot be conveyed by steel pipelines, and simultaneously ensures the stability of conveyed media;
5) the pipeline is provided with the temperature control device, and the device can store and convert absorbed solar energy into heat energy in daytime and transmit the heat energy to the whole pipeline through the heat conduction pipe and the annular heat transfer plate, so that intelligent temperature control is realized;
6) the pipeline has strong applicability, can be arranged in a straight line, a curve and a crossing way, solves the problem of limitation of the traditional pipeline, can be buried underground or arranged on the ground, can be flexibly arranged aiming at complex terrains, and can avoid mountains, rivers and the like;
7) the inner surface of the pipeline is smooth, the resistance to the conveying medium is small, the deposited medium is relatively less, and the conveying efficiency of the pipeline can be greatly improved;
8) the single pipeline and the integral node can be prefabricated in a factory and installed on site, so that the construction period is greatly shortened;
9) the pipeline has good waterproof performance and strong freeze-thaw resistance in the underground complex environment, and can obviously improve the fatigue resistance of the pipeline.
Description of the drawings:
FIG. 1 is a schematic view of a linear duct unit according to the present invention;
FIG. 2 is a schematic view of a single structure of the curved pipeline of the present invention;
FIG. 3 is a schematic structural diagram of a cross-over type pipeline monomer of the present invention;
FIG. 4 is a schematic cross-sectional view of a single pipe of the present invention
FIG. 5 is a schematic cross-sectional view of a piping structure of the present invention;
FIG. 6 is a schematic cross-sectional view of an integral joint connection of the single pipe body of the present invention with no concrete poured;
FIG. 7 is a schematic cross-sectional view of the connection of the pipe elements of the present invention to the cast concrete integral joint;
FIG. 8 is a schematic cross-sectional view of an outer GFRP tube of the integral node of the invention;
FIG. 9 is a schematic cross-sectional view of an outer GFRP tube of the integral node of the invention;
FIG. 10 is a schematic cross-sectional view of an inner GFRP tubular of the integral node of the invention;
FIG. 11 is a schematic cross-sectional view of an inner GFRP tubular of the integral node of the invention;
FIG. 12 is a schematic cross-sectional view of the connection of a single curved pipe and an integral joint according to the present invention;
FIG. 13 is a cross-sectional view of the cross-over type pipe monolith and integral node connection of the present invention;
FIG. 14 is a schematic view of the outer layer GFRP circular tube preformed bolt hole structure of the single pipe body of the invention;
FIG. 15 is a schematic view of the structure of the mounting hole of the outer GFRP circular tube reserved heat conducting pipe of the single pipe of the present invention;
FIG. 16 is a schematic view of the claw coupling of the present invention;
FIG. 17 is a cross-sectional schematic view of the jaw connection of the present invention;
FIG. 18 is a schematic view of a GFRP anti-buckling energy-consuming damper of the present invention;
FIG. 19 is a schematic view of a temperature control device according to the present invention.
The specific implementation mode is as follows:
referring to the figures, the large-diameter long-distance intelligent heat-preservation combined pipeline structure comprises a pipeline
The method comprises the following steps:
1) firstly prefabricating a combined pipeline monomer 1 in a factory, manufacturing an inner layer GFRP circular pipe 13, an outer layer GFRP circular pipe 12, a shear connection key 5, a GFRP high-strength bolt 7, a double positioning nut 9 matched with the GFRP high-strength bolt 7, an annular heat transfer plate 14, a claw type connecting piece 24, a steel anchor frame 21 and a temperature control device according to the size requirement, arranging the GFRP high-strength bolt 7 on the inner layer GFRP circular pipe 13, reserving bolt holes on the annular heat transfer plate 14 to enable the bolt holes to correspond to the GFRP high-strength bolt 7 on the inner layer GFRP circular pipe 13, then adopting the double positioning nut 9 to connect and fix the annular heat transfer plate 14 and the inner layer GFRP circular pipe 13, arranging the shear connection key 5 on the inner side of the outer layer GFRP circular pipe 12, reserving bolt holes 6 at two end parts of the inner and outer layer GFRP circular pipes, reserving bolt holes 28 and a heat conduction pipe mounting hole 22 on the outer layer GFRP circular pipe 12, connecting the claw type connecting piece 24 and the steel anchor frame 21 with the outer layer, an inner layer GFRP circular tube 13 with an annular heat transfer plate 14 is concentrically and vertically placed in an outer layer GFRP circular tube 12, a heat conduction tube 18 is connected with the annular heat transfer plate 14 between the inner layer GFRP circular tube and the outer layer GFRP circular tube through a heat conduction tube mounting hole 22, a lower circular tube maintenance structure 20 is welded on a steel anchor frame 21, the heat conduction tube 18 is led out through the lower circular tube maintenance structure 20, high-strength bolts 8 at two ends are screwed, then a self-compaction fine stone concrete layer 23 is simultaneously filled among the annular heat transfer plate 14, the inner layer GFRP circular tube 13 and the outer layer GFRP circular tube 12 from top to bottom, after initial setting of concrete, the high-strength bolts are loosened and repeatedly twisted to form bolt holes, and after maintenance, a combined pipeline monomer 1 is formed;
2) prefabricating an inner layer GFRP
3) transporting a prefabricated pipeline single body 1 and an inner layer GFRP circular tube 13, an outer layer GFRP circular tube 12 and an annular heat transfer plate 14 of an integral node 4 to a site, arranging the pipeline single body 1 on site soil, then placing the inner layer GFRP circular tube 13 and the annular heat transfer plate 14 of the integral node 4 which are connected and fixed into the outer layer GFRP circular tube 12, concentrically inserting the three into the pipeline single body 1, fixedly connecting the pipeline single body 1 with the integral node 4 which is not cast with concrete by using a high-strength bolt 8, then utilizing a concrete pump to firstly pour the stirred self-compacting fine stone concrete between the annular heat transfer plate 14 and the inner layer GFRP circular tube 13 of the integral node 4 through a concrete pouring hole 10 on the annular heat transfer plate 14, stopping pouring the concrete when the concrete at an exhaust hole 11 on the annular heat transfer plate 14 overflows, and then pouring the self-compacting fine stone into the annular heat transfer plate 14 and the outer layer GFRP circular tube 12 of the integral node 4 through the concrete pouring hole 10 on the outer layer GFRP circular tube 12 Stopping pouring when concrete at the exhaust holes 11 on the outer layer GFRP circular tube 12 overflows, and sequentially connecting the pipeline monomers 1 by adopting the integral nodes 4;
4) the GFRP anti-buckling energy dissipation damper is prefabricated in a factory, one end of the GFRP anti-buckling energy dissipation damper is connected with a ring of a claw type connecting piece on site through a high-strength bolt, the other end of the GFRP anti-buckling energy dissipation damper is connected with a foundation, the two ends of the GFRP anti-buckling energy dissipation damper are hinged, and the GFRP anti-buckling energy dissipation damper is symmetrically arranged at intervals along the direction of a pipeline;
5) the method comprises the steps of connecting an installed lower round steel
The pipe monomers are organically combined together through the formed integral node. The GFRP anti-buckling energy dissipation dampers are symmetrically arranged on the side faces of the pipeline monomers at certain intervals, when the pipeline monomers are disturbed by the outside to move, the GFRP anti-buckling energy dissipation dampers can stop the movement of the pipeline monomers in real time, the energy of the pipeline monomers is consumed, the pipeline monomers are guaranteed not to be damaged, and when the pipeline vibrates, the dampers can control the whole pipeline in real time.
The inner layer GFRP circular tube and the annular heat transfer plate are concentrically and vertically placed in the outer layer GFRP circular tube, and self-compacting fine stone concrete is poured from top to bottom to form a single pipeline body, so that the single pipeline body is conveniently connected with the integral node.
The pipeline monomer adopts integral nodal connection, fine assurance whole pipeline structure's leakproofness.
Protect conductor wire and heat pipe through upper and lower circular steel tube maintenance structure, the device can be with the solar energy storage of absorbing daytime and change into heat energy, transmits for whole pipeline through the annular heat transfer plate to realize pipeline intelligence accuse temperature, annular heat transfer plate can not take place easily to destroy between inside and outside two-layer GFRP pipe simultaneously.
The GFRP anti-buckling energy dissipation dampers are horizontally and symmetrically arranged on the side faces of the pipeline monomers, one ends of the GFRP anti-buckling energy dissipation dampers are connected with the pipeline monomers through claw type connecting pieces, the other ends of the GFRP anti-buckling energy dissipation dampers are connected with the foundation in a hinged mode, and therefore the GFRP anti-buckling energy dissipation dampers can only provide damping force and do not provide redundant restraint. The GFRP anti-buckling energy dissipation damper can play a role in connection and fixation and can play an energy dissipation and shock absorption role in the coming earthquake, and the anti-seismic performance of the single pipeline is greatly improved.
The single pipe body can be one of a straight pipe body, a curved pipe body or a crossing pipe body. The pipeline monomer can arrange in multiple forms, changes the direction of pipeline as required, can avoid complex topography such as mountain range and river, shortens construction cycle greatly.
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