阅读说明：本技术 一种采用装配式预制腹板的矩形钢管混凝土索塔 (Rectangular concrete-filled steel tube cable tower adopting prefabricated web plates ) 是由 陶齐宇 周霆 古锐 徐其刚 陈原 石成 刘浪 朱丽瑶 陈立 邱靖权 刘婉婷 陈 于 2021-08-27 设计创作，主要内容包括：一种采用装配式预制腹板的矩形钢管混凝土索塔,以有效提高索塔施工效率、施工质量和施工安全性,大幅度节省施工工期和建造费用。其塔柱由纵向连接为一体的钢管混凝土节段构成,各钢管混凝土节段包括塔柱钢管和腹板,其内灌注混凝土的塔柱钢管纵向、横向间隔设置,相邻塔柱钢管焊接连接平联腹杆形成格构结构,腹板设置于相邻塔柱钢管之间且与之固定连接。所述塔柱钢管为矩形钢管,所述腹板为预制钢筋混凝土腹板构件,预制钢筋混凝土腹板构件与塔柱钢管之间通过连接构件和拉铆钉装配连接为一体。(A rectangular steel tube concrete cable tower adopting an assembled prefabricated web plate is used for effectively improving the cable tower construction efficiency, the construction quality and the construction safety and greatly saving the construction period and the construction cost. The tower column is formed by longitudinally connecting concrete-filled steel tube segments into a whole, each concrete-filled steel tube segment comprises a tower column steel tube and a web plate, the tower column steel tubes filled with concrete are longitudinally and transversely arranged at intervals, adjacent tower column steel tubes are welded and connected with the flat web members to form a lattice structure, and the web plates are arranged between the adjacent tower column steel tubes and are fixedly connected with the adjacent tower column steel tubes. The tower column steel pipe is a rectangular steel pipe, the web is a prefabricated reinforced concrete web member, and the prefabricated reinforced concrete web member and the tower column steel pipe are integrally assembled and connected through a connecting member and a pull rivet.)

1. The utility model provides an adopt rectangle steel pipe concrete cable tower of prefabricated web of assembled, its column comprises longitudinal connection concrete filled steel tube festival section (10) as an organic whole, each concrete filled steel tube festival section (10) include column steel pipe (11) and web, column steel pipe (11) of its interior pouring concrete (12) are vertical, horizontal interval sets up, adjacent column steel pipe (11) welded connection parallel connection web member (30) form lattice structure, the web sets up between adjacent column steel pipe (11) and fixed connection with it, characterized by: the tower column steel pipe (11) is a rectangular steel pipe, the web is a prefabricated reinforced concrete web member (20), and the prefabricated reinforced concrete web member (20) and the tower column steel pipe (11) are assembled and connected into a whole through a connecting member and a pull rivet (40).

2. A rectangular concrete filled steel tube cable tower using prefabricated webs as claimed in claim 1, wherein: the connecting and connecting component comprises connecting steel plates (13) and reinforcing steel plates (21), a pair of transverse spacing and vertically extending connecting steel plates (13) are welded and connected on opposite side walls of each steel pipe (11), the reinforcing steel plates (21) are fixedly arranged on the front and back plate surfaces of the transverse ends of the prefabricated reinforced concrete web member (20), the connecting steel plates (13), the reinforcing steel plates (21) and the plate body of the prefabricated reinforced concrete web member (20) are correspondingly provided with transverse and vertically spaced mounting holes (41), the two transverse end parts of the prefabricated reinforced concrete web member (20) are clamped between the pair of connecting steel plates (13), and the prefabricated reinforced concrete web member (20) and the tower column steel pipe (11) are integrally assembled and connected through the pulling rivets (40) penetrating through the mounting holes (41).

3. A rectangular concrete filled steel tube cable tower using prefabricated webs as claimed in claim 1, wherein: the parallel connection web members (30) are arranged at the two vertical end parts of the adjacent tower column steel pipes (11) in parallel, each group comprises two rectangular steel pipes with the same section size and arranged at a transverse interval, and the rectangular steel pipes are welded with the tower column steel pipes (11) outside the side of the connecting steel plate (13).

Technical Field

The invention relates to bridge engineering, in particular to a rectangular steel tube concrete cable tower adopting an assembled prefabricated web plate, which is suitable for building a suspension bridge cable tower in a mountainous area in a high-intensity earthquake area, can realize rapid construction and has good earthquake resistance.

Background

The bridge construction conditions in western mountainous areas of China have the following characteristics: 1. day and night temperature difference is large, and concrete is difficult to maintain; 2. the construction site is narrow, large pieces are difficult to transport, so that the construction period is long, and the construction quality is difficult to ensure; 3. the earthquake intensity is high, and the earthquake resistance of the bridge tower is a design problem.

The cable tower is generally a reinforced concrete cable tower, a steel structure cable tower and a steel pipe concrete cable tower. The concrete cable tower has the advantages of heavy weight, easy cracking and general earthquake resistance; the steel structure cable tower has good anti-seismic performance, but has large sections, is difficult to process, transport and install, and is not suitable for the difficult road traffic conditions in western mountainous areas; the steel tube concrete cable tower skillfully integrates the advantages of high steel tension performance and good concrete compression performance, and has high bearing capacity, good plasticity and toughness and good earthquake resistance. Compared with a reinforced concrete tower, the steel tube concrete tower has the advantages of small section size, good anti-seismic performance, good crack resistance, environmental protection and the like; compared with a steel structure tower, the tower has better stability, fire resistance and corrosion resistance, and is convenient to transport, thereby being a structural form worth popularizing.

The existing steel tube concrete tower structurally comprises a plurality of round steel tubes, concrete is filled in the steel tubes, and the steel tubes are connected through cast-in-place concrete webs to form a lattice-shaped cross section. The general construction process comprises the steps of hoisting the steel pipe segments, welding and installing the segments in place → pouring concrete in the steel pipe → binding web steel bars between the steel pipes → pouring webs between the steel pipes → forming the cross sections of the segments → constructing the next segment according to the process. The following disadvantages exist in structure and construction: the circular steel pipe is adopted, the intersecting line welding seam is a three-dimensional space curve, the requirement on the processing precision is high, the processing and blanking are inconvenient, and the welding seam defect is easy to generate; the web plate is of a cast-in-place concrete structure, high-altitude concrete needs to be poured in situ, and construction safety and construction quality are not easy to guarantee.

Disclosure of Invention

The invention aims to solve the technical problem of providing a rectangular steel tube concrete cable tower adopting an assembled prefabricated web plate so as to effectively improve the cable tower construction efficiency, the construction quality and the construction safety and greatly save the construction period and the construction cost.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention relates to a rectangular concrete-filled steel tube cable tower adopting an assembled prefabricated web plate, wherein a tower column of the cable tower is formed by longitudinally connecting concrete-filled steel tube segments into a whole, each concrete-filled steel tube segment comprises a tower column steel tube and a web plate, the tower column steel tubes filled with concrete are longitudinally and transversely arranged at intervals, adjacent tower column steel tubes are welded and connected with parallel web members to form a lattice structure, and the web plates are arranged between the adjacent tower column steel tubes and are fixedly connected with the adjacent tower column steel tubes, and the cable tower is characterized in that: the tower column steel pipe is a rectangular steel pipe, the web is a prefabricated reinforced concrete web member, and the prefabricated reinforced concrete web member and the tower column steel pipe are integrally assembled and connected through a connecting member and a pull rivet.

The connecting and connecting component comprises connecting steel plates and reinforcing steel plates, a pair of transverse spacing and vertically extending connecting steel plates are welded on opposite side walls of each tower column steel pipe, the reinforcing steel plates are fixedly arranged on the front and back plate surfaces of the transverse two ends of the prefabricated reinforced concrete web member, the connecting steel plates, the reinforcing steel plates and the prefabricated reinforced concrete web member plate body are correspondingly provided with transverse and vertical spaced mounting holes, the two transverse end parts of the prefabricated reinforced concrete web member are clamped between the pair of connecting steel plates, and the prefabricated reinforced concrete web member and the tower column steel pipe are assembled and connected into a whole through the pull rivets penetrating through the mounting holes.

The beneficial effects of the invention are mainly reflected in the following aspects:

the steel pipe concrete segments, the prefabricated reinforced concrete web members and the like can be transported to the positions near the bridge site through parts, then the factory production and assembly are realized on site, and the assembled steel pipe concrete segments are transported to a construction site and then are hoisted, so that the method is convenient and rapid, the high-altitude concrete casting of the web is avoided, the construction period and the construction cost can be greatly saved, and the construction quality and the construction safety are easily ensured;

the tower column steel pipe and the flat web member are rectangular steel pipes, so that the processing and blanking are more convenient, the connecting welding seams between the tower column steel pipe and the flat web member are all linear welding seams, the intersecting line welding seams of the circular steel pipes are avoided, the segment production efficiency is improved, the welding seam defects are avoided, and the welding seam quality is guaranteed;

and thirdly, the prefabricated reinforced concrete web member and the tower column steel pipe are integrally assembled and connected through the connecting member and the pull rivet, compared with the traditional riveting technology, the prefabricated reinforced concrete web member is simpler to install and more reliable in joint, and compared with the traditional high-strength bolt connecting technology, the prefabricated reinforced concrete web member is higher in slip loosening resistance and fatigue fracture capacity.

Drawings

The specification includes the following figures:

FIG. 1 is a front view of a rectangular concrete filled steel tube cable tower of the present invention employing fabricated precast webs;

FIG. 2 is a front elevation view of a rectangular concrete filled steel tube pylon using fabricated precast webs of the present invention;

FIG. 3 is a front view of a concrete filled steel tube segment in a rectangular concrete filled steel tube cable tower employing fabricated precast webs of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is an enlarged view of portion C of FIG. 4;

FIG. 7 is a cross-sectional view of a concrete-filled steel tube pier stud in a rectangular concrete-filled steel tube pylon using fabricated precast webs of the present invention;

FIG. 8 is a plan view of a prefabricated reinforced concrete web member in a rectangular concrete filled steel tube cable tower employing fabricated prefabricated webs according to the present invention;

FIG. 9 is a cross-sectional view of a prefabricated reinforced concrete web member in a rectangular concrete filled steel tube cable tower employing fabricated prefabricated webs in accordance with the present invention;

fig. 10 is a schematic view of the connection between prefabricated reinforced concrete web members and a steel pipe concrete pier column in a rectangular steel pipe concrete cable tower adopting an assembled prefabricated web according to the present invention.

The figures show the components and corresponding references: the concrete-filled steel tube segment comprises a concrete-filled steel tube segment 10, a tower column steel tube 11, concrete 12, a connecting steel plate 13, a prefabricated reinforced concrete web member 20, a steel plate 21, a flat web member 30, a pull rivet 40 and a mounting hole 41.

Detailed Description

The invention is further illustrated with reference to the following figures and examples. Referring to fig. 1 to 6, in the rectangular concrete filled steel tube cable tower adopting the prefabricated web plate, a tower column is composed of concrete filled steel tube segments 10 which are longitudinally connected into a whole, each concrete filled steel tube segment 10 comprises a tower column steel tube 11 and a web plate, the tower column steel tubes 11 filled with concrete 12 are longitudinally and transversely arranged at intervals, adjacent tower column steel tubes 11 are welded and connected with a flat connecting web member 30 to form a lattice structure, and the web plate is arranged between the adjacent tower column steel tubes 11 and is fixedly connected with the adjacent tower column steel tubes 11, and the rectangular concrete filled steel tube cable tower is characterized in that: the tower column steel pipe 11 is a rectangular steel pipe, the web is a prefabricated reinforced concrete web member 20, and the prefabricated reinforced concrete web member 20 and the tower column steel pipe 11 are assembled and connected into a whole through a connecting member and a pull rivet 40 to form a cross section. The tower column steel pipe 11 and the cast-in-place concrete 12 therein mainly bear axial pressure and bending moment, and the prefabricated reinforced concrete web member 20 bears shearing force. The concrete filled steel tube segments 10, the prefabricated reinforced concrete web members 20 and the like can be produced and assembled in a factory, the assembled concrete filled steel tube segments 10 are transported to a construction site and then hoisted, convenience and rapidness are achieved, high-altitude concrete cast-in-place is avoided, the construction period and the construction cost can be greatly saved, and the construction quality is easily guaranteed.

Referring to fig. 3 and 5, in one embodiment, the parallel web members 30 are disposed in parallel at two vertical ends of adjacent tower steel pipes 11, each group includes two rectangular steel pipes with the same cross-sectional dimension disposed at a horizontal interval, and the rectangular steel pipes are welded to the tower steel pipes 11 outside the connecting steel plates 13. Namely, small-sized rectangular steel tube web members (lacing bars) are arranged at the sections of the tower steel tubes 11 to serve as operation platforms when the sections are installed. The tower column steel pipe 11 and the flat web member 30 are both rectangular steel pipes, so that the processing and blanking are more convenient, the connecting welding seams between the tower column steel pipe 11 and the flat web member are all linear welding seams, the intersecting line welding seams of the circular steel pipes are avoided, the improvement on the segment production efficiency is facilitated, the generation of welding seam defects is avoided, and the welding seam quality is guaranteed.

Referring to fig. 7 to 10, the connecting members include connecting steel plates 13 and reinforcing steel plates 21, a pair of connecting steel plates 13 extending in the transverse direction and the vertical direction are welded and connected to the opposite side walls of each tower steel tube 11, the reinforcing steel plates 21 are fixedly arranged on the front and back plate surfaces of the two transverse ends of the prefabricated reinforced concrete web member 20, the connecting steel plates 13, the reinforcing steel plates 21 and the prefabricated reinforced concrete web member 20 are correspondingly provided with mounting holes 41 in the transverse direction and the vertical direction, the two transverse ends of the prefabricated reinforced concrete web member 20 are clamped between the pair of connecting steel plates 13, and the prefabricated reinforced concrete web member 20 and the tower steel tube 11 are assembled and connected into a whole by the pulling rivets 40 penetrating through the mounting holes 41. The prefabricated reinforced concrete web member 30 and the tower column steel pipe 11 are integrally assembled and connected through the connecting member and the pull rivet 40, compared with the traditional riveting technology, the prefabricated reinforced concrete web member is simpler to install and more reliable in joint, and compared with the traditional high-strength bolt connecting technology, the prefabricated reinforced concrete web member is higher in slip loosening resistance and fatigue fracture capacity.

Example (b):

the applicant successfully applies the technical scheme of the application to a steel truss girder suspension bridge with a main span of 1290m for Yajiang Yajianjiang river bridges in the construction, the bridge width is 28m, the bridge tower height is 200m, the high and deep valley is located at the bridge position, the seismic intensity is VIII degree, the construction site is narrow, and the cable tower adopts the rectangular steel pipe concrete cable tower with the prefabricated web plates.

Comparison of the economic indicators for the various bridge tower types (steel tower solutions are not feasible and therefore not considered)

Table 1 comparison of cable tower solutions

As can be seen from the above table, compared with the circular steel tube cast-in-place web plate bridge tower, the structure and construction of the invention have the advantages that the manufacturing cost is saved by 2100 ten thousand, and the construction period is saved by 45 days; compared with a concrete bridge tower, the construction cost is saved by 4500 thousands, the construction period is saved by 105 days, the economic benefit is remarkable, the construction period and the construction cost can be greatly saved, and the construction quality and the construction safety are easily ensured.

The foregoing is illustrative of the principles of the present invention for a rectangular steel tube concrete pylon using fabricated precast webs and is not intended to limit the invention to the specific construction and applications shown and described, and it is intended that all modifications and equivalents thereof that may be utilized are within the scope of the claims.