阅读说明：本技术 隧道盾构管片的内衬结构、整体结构和施工方法 (Lining structure, integral structure and construction method of tunnel shield segment ) 是由 苏长裕 于 2020-05-29 设计创作，主要内容包括：本发明属于隧道盾构结构技术领域,涉及隧道盾构管片的内衬结构、整体结构和施工方法。将滑轮固定于金属卡箍上,将金属卡箍包覆在缠绕管上,使得滑轮固定于缠绕管底部；将带有滑轮的缠绕管平行推入盾构管片内部,相邻两根缠绕管之间通过热熔胶进行焊接,连接形成一个整体；每固定长度的缠绕管制作一个注浆孔；所有缠绕管安装完毕后,将所述缠绕管与盾构管片两端之间的缝隙进行封堵；将水泥砂浆通过注浆孔注入缠绕管与盾构管片中间,冷却。采用本申请的技术方案进行盾构管片的防腐,可减少用PVC胶片贴片进行防腐的安装时间,水泥砂浆在内衬管与盾构管片之间形成增强作用,提高强度,可大大提高生产组装效率,降低安装难度。(The invention belongs to the technical field of tunnel shield structures, and relates to a lining structure, an integral structure and a construction method of a tunnel shield segment. Fixing the pulley on the metal hoop, and coating the metal hoop on the winding pipe to ensure that the pulley is fixed at the bottom of the winding pipe; pushing the winding pipes with the pulleys into the shield segment in parallel, and welding the two adjacent winding pipes through hot melt adhesive to form a whole; manufacturing a grouting hole for each winding pipe with fixed length; after all the winding pipes are installed, plugging gaps between the winding pipes and two ends of the shield segment; and (5) injecting cement mortar into the middle of the winding pipe and the shield segment through the grouting hole, and cooling. Adopt the technical scheme of this application to carry out the anticorrosive of shield structure section of jurisdiction, reducible PVC film paster carries out anticorrosive installation time with, and cement mortar forms the reinforcing action between inside lining pipe and shield structure section of jurisdiction, and the reinforce can improve production packaging efficiency greatly, reduces the installation degree of difficulty.)

1. The utility model provides a lining structure of tunnel shield section of jurisdiction which characterized in that, includes winding pipe (2) and fixes pulley (3) in the winding pipe (2) outside, pulley (3) are fixed in on metal clamp (1), metal clamp (1) cladding is on winding pipe (2).

2. The lining structure of the tunnel shield segment as claimed in claim 1, wherein the winding pipes (2) are provided with a plurality of winding pipes, and two adjacent winding pipes (2) are welded together through a hot melt adhesive (5) to form a whole.

3. The lining structure of tunnel shield segments as claimed in claim 2, wherein grouting holes are formed in the winding pipes (2) at regular intervals after the winding pipes (2) are connected to form a whole.

4. The utility model provides a tunnel shield constructs section of jurisdiction overall structure, its characterized in that, includes shield structure section of jurisdiction (4), winding pipe (2) to and fix pulley (3) in the winding pipe (2) outside, pulley (3) are fixed in on metal clamp (1), metal clamp (1) cladding is on winding pipe (2), winding pipe (2) slide shield structure section of jurisdiction (4) in through pulley (3), and weld through hot melt adhesive (5) between two adjacent winding pipes (2), connect and form a whole, the gap packing between winding pipe (2) and shield structure section of jurisdiction (4) has the cement mortar of solidification forming.

5. The tunnel shield segment integral structure according to claim 4, wherein after the winding pipes (2) are connected to form a whole, grouting holes are formed in the winding pipes (2) at regular intervals, and cement mortar is injected into a space between the winding pipes (2) and the shield segment (4) through the grouting holes and is rapidly solidified.

6. The integral structure of the tunnel shield segment according to claim 4, wherein after the winding pipe (2) enters the interior of the shield segment (4), the center of the winding pipe (2) is kept concentric with the center of the shield segment (4).

7. The tunnel shield segment integral structure of claim 4, wherein the gap between the winding pipe (2) and the shield segment (4) is sealed at both ends of the tunnel shield segment integral structure in the length direction.

8. The construction method of the integral structure of the tunnel shield segment according to any one of claims 4 to 7, which comprises the following steps:

fixing the pulleys (3) on the metal hoop (1), and coating the metal hoop (1) on the winding pipe (2) so that the pulleys (3) are fixed at the bottom of the winding pipe (2), wherein each node comprises two pulleys (3), and each two meters is provided with one node;

the method comprises the following steps that winding pipes (2) with pulleys (3) are pushed into a shield segment (4) in parallel, and two adjacent winding pipes (2) are welded through hot melt adhesives (5) to be connected into a whole;

manufacturing a grouting hole in each winding pipe (2) with a fixed length;

after all the winding pipes (2) are installed, plugging gaps between the winding pipes (2) and the shield segments (4) at two ends of the tunnel shield segment in the length direction;

and (3) injecting cement mortar into the middle of the winding pipe (2) and the shield segment (4) through the grouting hole, and cooling.

9. The construction method of the tunnel shield segment integral structure according to claim 8, wherein one grouting hole is made every 40 m of the winding tube (2).

10. The construction method of the integral structure of the tunnel shield segment according to claim 8, wherein the hot melting connection between the adjacent winding pipes (2) is completed by using a hand-held hot melting gun.

Technical Field

The invention belongs to the technical field of tunnel shield structures, and particularly relates to a lining structure, an integral structure and a construction method of a tunnel shield segment.

Background

The shield segment is a main assembly component for shield construction, is the innermost barrier of the tunnel and plays a role in resisting soil layer pressure, underground water pressure and some special loads. The shield segment is a permanent lining structure of a shield tunnel, and the quality of the shield segment is directly related to the overall quality and safety of the tunnel, so that the waterproof performance and the durability of the tunnel are influenced. The waterproof and durable performances of the shield segment can be achieved by lining the plastic film, so that the corrosion resistance and the wear resistance of the shield segment are improved, and the service life of the shield segment is prolonged. The inner lining is a reinforced concrete structure and PVC anti-corrosion rubber sheets are adhered outside, so that the lining has certain internal and external pressure resistance and good corrosion resistance. The PVC film is prepared by taking polyvinyl chloride as a main raw material and matching with other modified auxiliary materials through high-temperature and high-pressure extrusion molding, and is divided into a T-shaped key and a diamond-shaped key. However, the construction of the PVC anticorrosive rubber lining is time-consuming and labor-consuming, and is not suitable under the condition of short construction period.

Chinese patent CN210370684U discloses a composite lining structure of a water delivery tunnel, which comprises an outer lining structure arranged on the inner wall of the water delivery tunnel; the lining structure is paved in a water delivery tunnel by adopting a pipe body, and a gap is reserved between the pipe body and the outer lining structure; and the filler is used for partially filling the gap and limiting the lining structure. The structure leaves a gap between the outer lining structure and the inner lining structure, a larger drainage channel is arranged between the inner lining and the outer lining, the channel area is large, the blockage is avoided, the removal of pressurized water is fully ensured between the inner lining structure and the outer lining structure, the drainage performance is excellent for a long time, and the problem of external pressure resistance of the inner lining of the pipe body is effectively solved. But in the structure, a gap exists between the outer lining structure and the inner lining structure, and the supporting strength and the stress condition of the gap are in risk.

Chinese patent CN105697922B discloses a construction method of an anti-seepage and anti-corrosion sewage pipeline segment lining based on a shield method, which comprises the following steps: (a) plugging holes in shield segments and gaps among the segments by using epoxy resin; (b) polishing the inner arc surface of the shield segment to expose the inner hole of the shield segment; (c) spraying polyaniline/epoxy resin mixed coating on the inner arc surface of the shield segment, and curing to form a protective coating. The construction step of forming a protective coating by adopting epoxy resin plugging, grinding and curing the inner arc surface of the shield segment; and the protective coating has excellent film forming property and corrosion resistance, and can effectively block sewage. However, the above patent requires the construction steps of epoxy resin plugging, grinding and curing of the inner arc surface of the shield segment to form a protective coating, which is time-consuming and labor-consuming, and is not suitable for the condition of short construction period.

Disclosure of Invention

The invention provides a lining structure, an integral structure and a construction method of a tunnel shield segment, aiming at overcoming the defects that the existing shield segment corrosion prevention construction is time-consuming and labor-consuming.

The invention has the technical advantages of quick construction, low construction cost, good corrosion resistance, simplicity, easy use and the like.

The purpose of the invention can be realized by the following technical scheme:

the invention firstly provides a lining structure of a tunnel shield segment, which comprises a winding pipe and a pulley fixed on the outer side of the winding pipe, wherein the pulley is fixed on a metal hoop, and the metal hoop is coated on the winding pipe.

In one embodiment of the invention, the metal clamp is bolted to the winding tube so that it does not displace relative to the winding tube.

In one embodiment of the invention, a plurality of winding pipes are arranged, and two adjacent winding pipes are welded through hot melt adhesive and connected to form a whole.

In one embodiment of the present invention, the hot melt adhesive is made of the same material as the winding pipe.

In one embodiment of the present invention, the material of the winding pipe is selected from high density polyethylene, polypropylene plastic, and the like.

In an embodiment of the present invention, the pipe caliber of the winding pipe can be selected according to the inner diameter of the shield segment and is smaller than the inner diameter of the shield segment.

In one embodiment of the invention, the pulley is fixed at the bottom of the winding pipe, the fixed position is determined according to the specific position of the caliber and the length of the winding pipe, and the fixed mode adopts a clamping hoop form.

In one embodiment of the invention, two pulleys per node are sufficient, one node every two meters.

In one embodiment of the present invention, after the winding pipes are integrally connected, grouting holes are formed in the winding pipes at regular intervals.

The invention also provides an integral structure of the tunnel shield segment, which comprises the shield segment, the winding pipes and the pulleys fixed on the outer sides of the winding pipes, wherein the pulleys are fixed on the metal hoop, the metal hoop is coated on the winding pipes, the winding pipes slide into the shield segment through the pulleys, two adjacent winding pipes are welded through hot melt adhesive and connected to form a whole, and the gaps between the winding pipes and the shield segment are filled with cement mortar formed by solidification.

In one embodiment of the invention, after the winding pipes are connected into a whole, grouting holes are formed in the winding pipes at intervals of fixed length, and the cement mortar is injected into the space between the winding pipes and the shield segment through the grouting holes and is rapidly solidified. The main purpose of the cement mortar is to provide support and protection.

In one embodiment of the invention, after the winding pipe enters the inside of the shield segment, the center of the winding pipe is kept concentric with the center of the shield segment.

In one embodiment of the invention, at two ends of the tunnel shield segment in the length direction of the whole structure, gaps between the winding pipe and the shield segment are sealed.

The invention also provides a construction method of the tunnel shield segment integral structure, which comprises the following steps:

fixing the pulleys on a metal hoop, and coating the metal hoop on a winding pipe to ensure that the pulleys are fixed at the bottom of the winding pipe, wherein each node comprises two pulleys, and each two meters is provided with one node;

pushing the winding pipes with the pulleys into the shield segment in parallel, and welding the two adjacent winding pipes through hot melt adhesive to form a whole;

manufacturing a grouting hole for each winding pipe with fixed length;

after all the winding pipes are installed, plugging gaps between the winding pipes and the shield segment at two ends of the tunnel shield segment in the length direction;

and (5) injecting cement mortar into the middle of the winding pipe and the shield segment through the grouting hole, and cooling.

In one embodiment of the invention, a grouting hole is made every 40 m of the winding pipe, and the diameter of the grouting hole can be set according to different types of grouting machines, so that the cement mortar is injected to ensure the dispersibility and uniformity.

In one embodiment of the invention, the heat-fusible joining between adjacent winding tubes is accomplished using a hand-held heat-fusible gun.

The device simple structure, stability, the fixed double-walled winding pipe location of pulley is quick, accurate, and the equipment is laborsaving, high-efficient, and double-walled winding pipe can play anticorrosive effect to the shield structure section of jurisdiction. The assembling method has the characteristics of accuracy, rapidness, high efficiency, time saving and labor saving when being used for assembling operation, and can be applied to shield segment lining construction operation.

Compared with the prior art, adopt the technical scheme of this application to carry out the anticorrosion of shield structure section of jurisdiction, reducible PVC film paster carries out anticorrosive installation time with, and cement mortar forms the reinforcing action between lining pipe and shield structure section of jurisdiction, and the reinforce can improve production packaging efficiency greatly, reduces the installation degree of difficulty.

The invention has the advantages of strong applicability, simple device structure, low manufacturing cost, convenient construction, time saving, high efficiency and labor saving.

Drawings

Fig. 1 is a schematic structural view of a lining structure of a tunnel shield segment;

FIG. 2 is a schematic structural diagram of an overall structure of a tunnel shield segment;

fig. 3 is a schematic view of a connection structure between adjacent winding pipes.

Reference numbers in the figures: 1-a metal hoop; 2-a winding tube; 3-a pulley; 4-shield segments; 5-hot melt adhesive.

Detailed Description

Referring to fig. 1, a lining structure of a tunnel shield segment is provided, including winding pipe 2 and pulley 3 fixed in the winding pipe 2 outside, pulley 3 is fixed in on metal clamp 1, metal clamp 1 cladding is on winding pipe 2.

In one embodiment, the metal clamp 1 is bolted to the winding pipe 2 so that it does not move relative to the winding pipe.

In one embodiment, the winding pipes 2 are provided with a plurality of winding pipes, and two adjacent winding pipes 2 are welded through the hot melt adhesive 5 and connected to form a whole.

In one embodiment, the hot melt adhesive 5 is made of the same material as the winding pipe 2.

In one embodiment, the material of the winding pipe 2 is selected from high density polyethylene, polypropylene plastic, and the like.

In one embodiment, the pipe caliber of the winding pipe 2 can be selected according to the inner diameter of the shield segment 4 and is smaller than the inner diameter of the shield segment 4.

In one embodiment, the pulley 3 is fixed at the bottom of the winding pipe 2, the fixed position is determined according to the specific position of the caliber and the length of the winding pipe, and the fixed mode is in the form of a hoop.

In one embodiment, two pulleys 3 per node are sufficient, one node every two meters.

In one embodiment, after the winding pipes 2 are connected to form a whole, grouting holes are formed in the winding pipes 2 at regular intervals.

Referring to fig. 2 and 3, a tunnel shield segment overall structure is provided, including shield segment 4, winding pipe 2 to and fix the pulley 3 in the winding pipe 2 outside, pulley 3 is fixed in on the metal clamp 1, the cladding of metal clamp 1 is on winding pipe 2, winding pipe 2 slides to shield segment 4 in through pulley 3, and welds through hot melt adhesive 5 between two adjacent winding pipes 2, connects and forms a whole, the gap packing between winding pipe 2 and the shield segment 4 has the cement mortar of solidification forming.

In one embodiment, after the winding pipes 2 are connected into a whole, grouting holes are formed in the winding pipes 2 at intervals of fixed length, and cement mortar is injected into a space between the winding pipes 2 and the shield segment 4 through the grouting holes and is rapidly solidified. The main purpose of the cement mortar is to provide support and protection.

In one embodiment, after the winding pipe 2 enters the inside of the shield segment 4, the center of the winding pipe 2 is kept concentric with the center of the shield segment 4.

In one embodiment, at two ends of the whole structure of the tunnel shield segment in the length direction, a gap between the winding pipe 2 and the shield segment 4 is sealed.

The invention also provides a construction method of the tunnel shield segment integral structure, which comprises the following steps:

fixing the pulleys 3 on the metal hoop 1, and wrapping the metal hoop 1 on the winding pipe 2, so that the pulleys 3 are fixed at the bottom of the winding pipe 2, each node is provided with two pulleys 3, and each two meters is provided with one node;

pushing the winding pipes 2 with the pulleys 3 into the shield segment 4 in parallel, and welding the two adjacent winding pipes 2 through hot melt adhesives 5 to form a whole;

manufacturing a grouting hole for each winding pipe 2 with fixed length;

after all the winding pipes 2 are installed, plugging gaps between the winding pipes 2 and the shield segments 4 at two ends of the tunnel shield segment in the length direction;

and (3) injecting cement mortar into the middle of the winding pipe 2 and the shield segment 4 through the grouting hole, and cooling.

In one embodiment, a grouting hole is formed in each 40 m winding pipe 2, and the diameter of the grouting hole can be set according to different types of grouting machines, so that the dispersity and uniformity of cement mortar are guaranteed during the injection of the cement mortar.

In one embodiment, the heat-fusible connection between adjacent winding tubes 2 is accomplished using a hand-held heat-fusible gun.

Adopt the technical scheme of this application to carry out the anticorrosive of shield structure section of jurisdiction, reducible PVC film paster carries out anticorrosive installation time with, and cement mortar forms the reinforcing action between inside lining pipe and shield structure section of jurisdiction, and the reinforce can improve production packaging efficiency greatly, reduces the installation degree of difficulty.

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

The construction method of the tunnel shield segment integral structure comprises the following steps:

placing the device on a flat table;

fixing a pulley 3 on a metal hoop 1, wrapping the metal hoop 1 on a winding pipe 2, fixing the pulley 3 at the bottom of the winding pipe 2, locking the pulley by a bolt so as not to generate relative displacement, and arranging two pulleys 3 at each node, wherein each two meters is provided with one node;

pushing the winding pipe 2 with the pulley 3 into the shield segment 4 in parallel, keeping the circle center of the winding pipe 2 concentric with the circle center of the shield segment 4 after the winding pipe 2 enters the shield segment 4, and finishing hot melting connection between the adjacent winding pipes 2 by using a handheld hot melting gun to form a whole;

a grouting hole is formed in each 40 m winding pipe 2, the aperture of the grouting hole can be set according to different grouting machine models, and the dispersibility and uniformity of cement mortar are guaranteed by the grouting;

after all the winding pipes 2 are installed, plugging gaps between the winding pipes 2 and the shield segments 4 at two ends of the tunnel shield segment in the length direction;

and (3) injecting cement mortar into the middle of the winding pipe 2 and the shield segment 4 through the grouting hole, cooling and solidifying to finish construction.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.