Concrete-filled steel tube special-shaped pier with overhanging type truss structure
By using cantilevered truss structure steel-concrete composite irregular bridge piers, the problem of large space occupation by bridge piers has been solved, achieving space saving under the bridge and improving traffic efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-10
AI Technical Summary
In existing bridge designs, the piers are located directly beneath the bridge, resulting in a large space occupation beneath the bridge and affecting urban traffic layout and efficiency.
The bridge adopts a cantilevered truss structure with steel-concrete composite irregular piers. The pier bodies are linearly distributed at equal intervals, and the lines connecting multiple piers intersect with the length of the bridge. The main beam is supported by inverted triangular bearing columns and vertical tension columns, which reduces the space occupied.
It saves space under the bridge, simplifies road rerouting requirements, and improves traffic and construction efficiency.
Smart Images
Figure CN224106277U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bridge engineering structures, and in particular to a cantilever truss structure steel pipe concrete special-shaped pier. BACKGROUND
[0002] In existing bridge design, the pier is usually located directly below the bridge, and often adopts an H-shaped structure. Although this design can effectively enhance the stability and carrying capacity of the bridge, it also brings some problems that cannot be ignored. First, the H-shaped pier occupies a large space, which seriously limits the available space below the bridge, especially in urban environments. This design occupies valuable ground space, affecting urban planning and traffic layout.
[0003] Secondly, due to the presence of the pier, the road below the bridge often needs to be diverted to avoid the obstruction of the pier, which not only increases the cost and complexity of road construction, but also can cause uneven distribution of traffic flow, exacerbating congestion in some sections. In particular, at the intersection of the bridge and the road, the conventional H-shaped pier directly blocks the road surface, forcing vehicles to detour, reducing traffic efficiency, and affecting driving safety and comfort.
[0004] Therefore, the existing bridge pier design improves the stability of the bridge structure while also negatively affecting ground traffic. In order to optimize urban traffic layout and improve traffic efficiency, it is urgent to develop a new type of pier design that can reduce the occupation of space below the bridge, simplify the need for road diversion, and improve the overall traffic environment while ensuring the stability and carrying capacity of the bridge. CONTENT OF THE INVENTION
[0005] In order to solve the problem that the space below the bridge is occupied by the pier in traditional pier construction, the present application provides a cantilever truss structure steel pipe concrete special-shaped pier, which reduces the occupied area of the pier and improves construction efficiency.
[0006] According to one aspect of the present application, a cantilever truss structure steel pipe concrete special-shaped pier is provided, which includes: a pier body arranged between the ground and a plurality of main girders, the plurality of main girders being arranged at intervals on the bottom surface of the deck slab, and the plurality of main girders being arranged along the length direction of the deck slab. The pier body is provided with a plurality of pier bodies, each pier body corresponding to one main girder, and each pier body being linearly distributed at equal intervals below the main girder. The pier body includes a pressure-bearing column assembly and a tension column. The cross section of the pressure-bearing column assembly is a reverse triangular structure, the bottom angle of the reverse triangular structure is arranged close to the ground, the two top angles are respectively connected to the tension column and the main girder, and the bottom end of the tension column is connected to the ground.
[0007] In some embodiments, the pressure column assembly comprises: a first pressure column, a second pressure column, a cross beam; wherein the first pressure column and the second pressure column are in V-shaped distribution, the cross beam is connected to the top end of the first pressure column and the second pressure column respectively, the top end of the tension column is connected to the top end of the first pressure column, and the top end of the second pressure column is connected to the main beam; the first pressure column, the second pressure column, the cross beam and the tension column are all hollow steel pipe structures; wherein the first pressure column and the second pressure column are provided with concrete.
[0008] In some embodiments, the pier body further comprises: a first connecting piece, a second connecting piece and a third connecting piece, all of which are hollow steel pipe structures; wherein the first connecting piece is arranged at the top end of the tension column, and the first connecting piece is connected to the first pressure column, the cross beam and the tension column respectively; the second connecting piece is arranged at the top end of the second pressure column, and the second connecting piece is connected to the cross beam and the top end of the second pressure column respectively; the third connecting piece is arranged at the bottom end of the first pressure column and the second pressure column, and the third connecting piece is connected to the first pressure column and the second pressure column respectively, and the bottom surface of the third connecting piece is connected to the ground.
[0009] In some embodiments, the first connecting piece comprises: three square steel pipes, one end of the three square steel pipes is closed, the other end is open and communicates with each other, and the open ends of the three square steel pipes are arranged in convergence, wherein two square steel pipes are arranged vertically, and the closed ends are connected to the tension column and the cross beam respectively, and the other square steel pipe is arranged on a straight line which is collinear with the angle bisector of the two square steel pipes, and the closed end is connected to the first pressure column.
[0010] In some embodiments, the second connecting piece comprises a first square pipe and a second square pipe, the first square pipe and the second square pipe are in V-shaped distribution, the two ends of the first square pipe are closed, one end of the first square pipe is connected to the cross beam, and the other end is connected to the second square pipe at the bottom surface, and the end of the second square pipe away from the first square pipe communicates with the top end of the second pressure column; wherein one side of the first square pipe away from the second square pipe is open, the first square pipe is provided with partitions at intervals, and the concrete is arranged between the two partitions, and the bottom end of the concrete between the two partitions is close to the top end of the concrete in the second pressure column.
[0011] In some embodiments, the third connecting piece comprises: a third square pipe and a fourth square pipe, the third square pipe and the fourth square pipe are in V-shaped distribution, the bottom end of the third square pipe communicates with the bottom end of the fourth square pipe, and the top end of the third square pipe and the top end of the fourth square pipe respectively communicate with the bottom end of the first pressure column and the second pressure column; wherein the bottom end of the third square pipe and the fourth square pipe is connected to a horizontal plate, the bottom surface of the horizontal plate is uniformly provided with a plurality of first shear nails, and the bottom end of the tension column is uniformly provided with a plurality of second shear nails on the circumferential outer wall; the inner wall of the included angle between the third square pipe and the fourth square pipe is provided with a pouring port; the outer wall of one end of the first pressure column close to the first connecting piece is provided with a first slurry outlet; and the outer wall of one end of the second square pipe close to the first square pipe is provided with a second slurry outlet.
[0012] In some embodiments, the pier body further comprises: a first cast concrete block, the bottom end of the tensile column and the second shear pin are arranged in the first cast concrete block; the first shear pin is arranged in the first cast concrete block and is arranged on the side of the tensile column close to the main beam; further comprising: a post-cast concrete block, the post-cast concrete block is arranged on the top surface of the first cast concrete block away from the tensile column, and the bottom end of the third connecting piece is arranged in the post-cast concrete block.
[0013] In some embodiments, the cross section of the cross beam is a U-shaped structure, the top surface of the cross beam is further provided with a plurality of folded plates, the folded plates are arranged in a line, and the folded plates are hingedly connected with each other; further comprising a pressure bearing plate, one end of the pressure bearing plate is connected with one end of the plurality of folded plates, and the pressure bearing plate extends on both sides of the surface of the first square tube; a reinforcing rib is arranged between the bottom surface of the pressure bearing plate and the side wall of the first square tube.
[0014] The embodiments of the present application have the following advantages.
[0015] In order to improve the problem that the existing bridge pier is directly below the bridge, resulting in large space occupation below the bridge, and the road below the bridge needs to be diverted, the bridge pier body is linearly distributed at equal intervals, and the line connecting the plurality of bridge pier bodies intersects the length direction of the bridge, so that when the bending direction of the bridge intersects the bending direction of the road, the road is on one side of the bridge pier body, thereby saving the space below the bridge, the bridge pier body is composed of a pressure bearing column assembly of an inverted triangular structure and a vertical tensile column, one end of the top edge of the inverted triangular structure supports the main beam of the bridge, and the other end is subjected to the tension of the tensile column, thereby maintaining a balanced state, and each bridge pier body supports a corresponding main beam, so that the main beams below the bridge deck are all supported.
[0016] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application can be achieved and obtained by the structure specifically pointed out in the written description and the accompanying drawings.
[0017] The technical solutions of the present application will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0018] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:
[0019] Figure 1 Fig. 1 shows a schematic view of the installation of a special-shaped bridge pier and a main beam according to one embodiment of the present application.
[0020] Figure 2 Fig. 2 shows a schematic view of the installation of a special-shaped bridge pier and the ground according to one embodiment of the present application.
[0021] Figure 3 A front view of a special-shaped pier is shown according to one embodiment of the present application.
[0022] Figure 4 A schematic diagram of a first-poured concrete structure is shown according to one embodiment of the present application.
[0023] Figure 5 A schematic diagram of a post-poured concrete structure is shown according to one embodiment of the present application.
[0024] Figure 6 A schematic diagram of a tension column installation is shown according to one embodiment of the present application.
[0025] Figure 7 A sectional view of a special-shaped pier is shown according to one embodiment of the present application.
[0026] Figure 8 A schematic diagram of a second connector structure is shown according to one embodiment of the present application.
[0027] Reference signs
[0028] 1-pier body; 2-main beam; 3-deck slab;
[0029] 11-pressure column assembly;
[0030] 111-first pressure column; 112-second pressure column; 113-cross beam; 114-first grout outlet; 115-folded plate; 116-pressure plate; 117-stiffener;
[0031] 12-tension column;
[0032] 121-second shear pin;
[0033] 13-first connector;
[0034] 131-square steel tube;
[0035] 14-second connector;
[0036] 141-first square tube; 142-second square tube; 143-baffle; 144-second grout outlet;
[0037] 15-third connector;
[0038] 151-third square tube; 152-fourth square tube; 153-horizontal plate; 154-first shear pin; 155-pouring port;
[0039] 16-first-poured concrete block; 17-post-poured concrete block. DETAILED DESCRIPTION
[0040] In order to make the purpose, scheme and advantages of the technical solutions of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of specific embodiments of the present application. Unless otherwise specified and limited, the terms used herein have the meanings commonly understood in the art. The same reference signs in the drawings represent the same components.
[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0042] As described above, in the traditional pier construction, the space directly below the bridge is occupied by the pier because the pier is directly below the bridge.
[0043] In order to at least partially solve one or more of the above problems and other potential problems, example embodiments of the present application provide a cantilever truss structure concrete-filled steel tube special-shaped pier, which comprises: a pier body 1 arranged between the ground and a plurality of main beams 2, the plurality of main beams 2 are arranged at the bottom surface of the bridge deck 3 at intervals, the plurality of main beams 2 are arranged along the length direction of the bridge deck 3, the pier body 1 is provided in plurality, each pier body 1 corresponds to each main beam 2 one by one, and each pier body 1 is linearly distributed at equal intervals below the main beam 2; the pier body 1 comprises: a pressure bearing column assembly 11 and a tension column 12; wherein the pressure bearing column assembly 11 has a cross section in the shape of an inverted triangle, the bottom angle of the inverted triangle is arranged close to the ground, the two top angles are respectively connected to the tension column 12 and the main beam 2, and the bottom end of the tension column 12 is connected to the ground.
[0044] In the above embodiment, in order to improve the problem that the existing bridge pier is directly below the bridge, resulting in a large space below the bridge, and the road below the bridge needs to be diverted, the pier body 1 is linearly distributed at equal intervals, and the line connecting the plurality of pier bodies 1 intersects the length direction of the bridge, so that when the bending direction of the bridge intersects the bending direction of the road, the road is on one side of the pier body 1, thereby saving the space below the bridge, the pier body 1 is composed of the pressure bearing column assembly 11 in the shape of an inverted triangle and a vertically arranged tension column 12, one end of the top edge of the inverted triangle supports the main beam 2 of the bridge, and the other end is subjected to the tension of the tension column 12, thereby maintaining a balanced state, each pier body 1 supports a corresponding main beam 2, thereby supporting the main beams 2 below the bridge deck.
[0045] Please refer to Figures 1-8In some embodiments, the pressure column assembly 11 comprises: a first pressure column 111, a second pressure column 112, a cross beam 113; wherein the first pressure column 111 and the second pressure column 112 are in V-shaped distribution, the cross beam 113 is connected to the top end of the first pressure column 111 and the second pressure column 112 respectively, the top end of the tension column 12 is connected to the top end of the first pressure column 111, and the top end of the second pressure column 112 is connected to the main beam 2; the first pressure column 111, the second pressure column 112, the cross beam 113 and the tension column 12 are all hollow steel pipe structures; wherein the first pressure column 111 and the second pressure column 112 are provided with concrete.
[0046] In the above embodiment, after the installation of the first pressure column 111 and the second pressure column 112 is completed, concrete needs to be injected into the first pressure column 111 and the second pressure column 112 to improve the pressure bearing capacity of the first pressure column 111 and the second pressure column 112.
[0047] Please refer to Figures 1-8 In some embodiments, the pier body 1 further comprises: a first connecting piece 13, a second connecting piece 14 and a third connecting piece 15, all of which are hollow steel pipe structures; wherein the first connecting piece 13 is arranged at the top end of the tension column 12, and the first connecting piece 13 is connected to the first pressure column 111, the cross beam 113 and the tension column 12 respectively; the second connecting piece 14 is arranged at the top end of the second pressure column 112, and the second connecting piece 14 is connected to the cross beam 113 and the top end of the second pressure column 112 respectively; the third connecting piece 15 is arranged at the bottom end of the first pressure column 111 and the second pressure column 112, and the third connecting piece 15 is connected to the first pressure column 111 and the second pressure column 112 respectively, and the bottom surface of the third connecting piece 15 is connected to the ground.
[0048] In the above embodiment, the first connecting piece 13, the second connecting piece 14 and the third connecting piece 15 are used to splice the inverted triangular structure and the tension column 12, so that the first pressure column 111 is connected to the second pressure column 112 through the third connecting piece 15, and the tension column 12 is connected to the first pressure column 111 and the cross beam 113 through the first connecting piece 13, and the cross beam 113 and the second pressure column 112 are connected through the second connecting piece 14.
[0049] Please refer to Figures 1-8 In some embodiments, the first connecting piece 13 comprises: three square steel pipes 131, one end of each of the three square steel pipes 131 is closed, the other end is open and communicates with each other, and the open ends of the three square steel pipes 131 are arranged in convergence, wherein two of the square steel pipes 131 are arranged vertically, the closed ends of the two square steel pipes 131 are connected to the tension column 12 and the cross beam 113 respectively, the straight line where the other square steel pipe 131 is located is collinear with the angle bisector of the two square steel pipes 131, and the closed end of the other square steel pipe 131 is connected to the first pressure column 111.
[0050] In the above embodiment, the first connecting member 13 is composed of three square steel pipes 131, two of which are perpendicular to each other and used to connect the cross beam 113 and the tensile column 12, and the other is used to connect the first bearing column 111, which is poured with concrete at the bottom, and the concrete moves upwards along the inner wall of the first bearing column 111 and stops when it meets the closed end of the square steel pipe 131.
[0051] Referring to Figures 1-8 In some embodiments, the second connecting member 14 includes a first square pipe 141 and a second square pipe 142, which are in V-shaped distribution, the two ends of the first square pipe 141 are closed, one end of the first square pipe 141 is connected to the cross beam 113, and the other end is connected to the second square pipe 142 at the bottom surface, and the end of the second square pipe 142 away from the first square pipe 141 is connected to the top end of the second bearing column 112; wherein one side of the first square pipe 141 away from the second square pipe 142 is open, and two partitions 143 are arranged in the first square pipe 141, and concrete is arranged between the two partitions 143, and the bottom end of the concrete between the two partitions 143 is close to the top end of the concrete in the second bearing column 112.
[0052] In the above embodiment, the second square pipe 142 is connected to the second bearing column 112, so that when the concrete is poured at the bottom of the second square pipe 142, the concrete moves upwards along the inner wall of the second bearing column 112, and after passing through the second square pipe 142, it stops moving when it meets the bottom surface of the first square pipe 141, and the two partitions 143 arranged in the first square pipe 141 are used to pour concrete, so that the top end of the concrete in the second bearing column 112 is arranged below the concrete between the two partitions 143, thereby transmitting the pressure of the main beam 2 to the second bearing column 112 through the concrete between the two partitions 143.
[0053] Referring to Figures 1-8 In some embodiments, the third connecting member 15 includes a third square pipe 151 and a fourth square pipe 152, which are in V-shaped distribution, the bottom end of the third square pipe 151 is connected to the bottom end of the fourth square pipe 152, and the top end of the third square pipe 151 and the top end of the fourth square pipe 152 are respectively connected to the bottom end of the first bearing column 111 and the second bearing column 112; wherein the bottom end of the third square pipe 151 and the fourth square pipe 152 is connected to a horizontal plate 153, and the bottom surface of the horizontal plate 153 is uniformly provided with a plurality of first shear nails 154, and the circumferential outer wall of the bottom end of the tensile column 12 is uniformly provided with a plurality of second shear nails 121; the inner wall of the included angle between the third square pipe 151 and the fourth square pipe 152 is provided with a pouring port 155; the outer wall of the end of the first bearing column 111 close to the first connecting member 13 is provided with a first grout outlet 114; and the outer wall of the end of the second square pipe 142 close to the first square pipe 141 is provided with a second grout outlet 144.
[0054] In the above embodiment, the inner wall of the third-party pipe 151 and the fourth-party pipe 152 at the included angle is provided with a pouring opening 155. When the concrete is poured into the first pressure column 111 and the second pressure column 112, the concrete slurry enters the pouring opening 155 and continuously moves upward, and the air in the first pressure column 111 and the second pressure column 112 and the air in the concrete slurry are discharged from the first slurry outlet 114 and the second slurry outlet 144, thereby improving the structural strength of the formed concrete. The consistency of the overflowed concrete slurry can be judged through the first slurry outlet 114 and the second slurry outlet 144, so as to judge whether the consistency of the concrete slurry in the first pressure column 111 and the second pressure column 112 meets the standard.
[0055] Please refer to Figures 1-8 In some embodiments, the pier body 1 further comprises: a first poured concrete block 16, the tension column 12 bottom end and the second shear nail 121 are arranged in the first poured concrete block 16; the first shear nail 154 is arranged in the first poured concrete block 16 and is arranged on the side of the tension column 12 close to the main beam 2; further comprising: a post-cast concrete block 17, the post-cast concrete block 17 is arranged on the top surface of the first poured concrete block 16 away from the tension column 12, and the bottom end of the third connecting piece 15 is arranged in the post-cast concrete block 17.
[0056] In the above embodiment, when the pier body 1 is installed, the first poured concrete block 16 needs to be pre-poured on the bottom surface. When pouring, the tension column 12 with one end of the second shear nail 121 is placed in the first poured concrete block 16, and the first shear nail 154 on the bottom surface of the horizontal plate 153 is placed on the surface of the first poured concrete block 16, so that after the first poured concrete block 16 is formed, the post-cast concrete block 17 is poured at the bottom end of the third connecting piece 15. After the post-cast concrete block 17 is formed, the first pressure column 111 and the second pressure column 112 are welded through the third connecting piece 15, and the tension column 12, the cross beam 113 and the second pressure column 112 are connected through the first connecting piece 13 and the second connecting piece 14.
[0057] Please refer to Figures 1-8 In some embodiments, the cross beam 113 has a U-shaped structure in cross section, and the top surface of the cross beam 113 is further provided with a plurality of folded plates 115, each of which is arranged in a straight line, and each of which is hingedly connected to each other. Further comprising a pressure plate 116, one end of the pressure plate 116 is connected to one end of the plurality of folded plates 115, and the pressure plate 116 extends to both sides on the surface of the first square pipe 141. The bottom surface of the pressure plate 116 and the side wall of the first square pipe 141 are provided with a reinforcing rib 117.
[0058] In the above embodiment, the cross section of the cross beam 113 is in a U-shaped structure, after the pouring of the two partitions 143 of the first square tube 141 is completed, the folded plate 115 and the pressure plate 116 are welded on the surface of the cross beam 113 and the first square tube 141, the folded plate 115 is used for folding and storing during transportation, and the problem that the welded seam cannot be welded due to the deformation of the folded plate 115 and the pressure plate 116 after being extruded during transportation due to the long overall length of the folded plate 115 is improved.
[0059] The above has described the embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.
[0060] The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.
[0061] The above is only an optional embodiment of the present application and is not used to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A cantilevered truss structure of a concrete-filled steel tubular special-shaped pier, comprising: The bridge pier body (1) is arranged between the ground and a plurality of main beams (2), the plurality of main beams (2) are arranged at the bottom surface of a bridge deck (3) at intervals, and the plurality of main beams (2) are arranged along the length direction of the bridge deck (3), characterized in that A plurality of bridge pier bodies (1) are arranged, each bridge pier body (1) corresponds to each main beam (2), and each bridge pier body (1) is linearly distributed at equal intervals at the lower part of the main beam (2); The bridge pier body (1) comprises: A pressure bearing column assembly (11) and a tension column (12); wherein The pressure bearing column assembly (11) is in a reverse triangular structure, the bottom angle of the reverse triangular structure is arranged close to the ground, the two top angles are respectively connected to the tension column (12) and the main beam (2), and the bottom end of the tension column (12) is connected to the ground.
2. The cantilevered steel pipe concrete special-shaped bridge pier of the truss structure according to claim 1, characterized in that The pressure bearing column assembly (11) comprises: A first pressure bearing column (111), a second pressure bearing column (112) and a cross beam (113); wherein The first pressure bearing column (111) and the second pressure bearing column (112) are in a V-shaped distribution, the two ends of the cross beam (113) are respectively connected to the top ends of the first pressure bearing column (111) and the second pressure bearing column (112), the top end of the tension column (12) is connected to the top end of the first pressure bearing column (111), and the top end of the second pressure bearing column (112) is connected to the main beam (2); The first pressure bearing column (111), the second pressure bearing column (112), the cross beam (113) and the tension column (12) are all in a hollow steel pipe structure; wherein The first pressure bearing column (111) and the second pressure bearing column (112) are both filled with concrete.
3. The cantilevered steel pipe concrete special-shaped bridge pier of the truss structure according to claim 2, characterized in that The bridge pier body (1) further comprises: A first connecting piece (13), a second connecting piece (14) and a third connecting piece (15), wherein the first connecting piece (13), the second connecting piece (14) and the third connecting piece (15) are all in a hollow steel pipe structure; wherein The first connecting piece (13) is arranged at the top end of the tension column (12), and the first connecting piece (13) is respectively connected to the first pressure bearing column (111), the cross beam (113) and the tension column (12); The second connecting piece (14) is arranged at the top end of the second pressure bearing column (112), and the second connecting piece (14) is respectively connected to the cross beam (113) and the top end of the second pressure bearing column (112); The third connecting piece (15) is arranged at the bottom end of the first pressure bearing column (111) and the second pressure bearing column (112), and the third connecting piece (15) is respectively connected to the first pressure bearing column (111) and the second pressure bearing column (112), and the bottom surface of the third connecting piece (15) is connected to the ground.
4. The cantilevered steel pipe concrete special-shaped bridge pier of the truss structure according to claim 3, characterized in that The first connecting piece (13) comprises: Three square steel pipes (131), one end of the three square steel pipes (131) is closed, the other end is open and communicated with each other, the open ends of the three square steel pipes (131) are arranged in convergence, wherein two of the square steel pipes (131) are arranged vertically, the closed ends are connected with the tension column (12) and the cross beam (113) respectively, the straight line where the other square steel pipe (131) is located is collinear with the angle bisector of the two square steel pipes (131), and the closed end is connected with the first pressure column (111). 5.The overhanging truss structure steel pipe concrete special-shaped pier of the bridge according to claim 4, characterized in that, the second connecting piece (14) comprises: a first square pipe (141) and a second square pipe (142), the first square pipe (141) and the second square pipe (142) are arranged in a V shape, two ends of the first square pipe (141) are closed, one end of the first square pipe (141) is connected with the cross beam (113), and the other end is connected with the second square pipe (142) at the bottom surface, and the second square pipe (142) is connected with the top end of the second pressure column (112) away from the first square pipe (141); wherein one side of the first square pipe (141) away from the second square pipe (142) is open, the first square pipe (141) is provided with a partition plate (143) at intervals, and the first square pipe (141) is provided with concrete between the two partition plates (143), and the bottom end of the concrete between the two partition plates (143) is close to the top end of the concrete in the second pressure column (112). 6.The overhanging truss structure steel pipe concrete special-shaped pier of the bridge according to claim 5, characterized in that, the third connecting piece (15) comprises: a third square pipe (151) and a fourth square pipe (152), the third square pipe (151) and the fourth square pipe (152) are arranged in a V shape, the bottom end of the third square pipe (151) is communicated with the bottom end of the fourth square pipe (152), and the top end of the third square pipe (151) and the top end of the fourth square pipe (152) are communicated with the bottom end of the first pressure column (111) and the second pressure column (112) respectively; wherein the bottom end of the third square pipe (151) and the fourth square pipe (152) is connected with a horizontal plate (153), the horizontal plate (153) is uniformly provided with a plurality of first shear nails (154) on the bottom surface, and the bottom end of the tension column (12) is uniformly provided with a plurality of second shear nails (121) on the circumferential outer wall; the third square pipe (151) and the fourth square pipe (152) are provided with a pouring port (155) on the inner wall of the included angle; the first pressure column (111) is provided with a first slurry outlet (114) on the outer wall of one end close to the first connecting piece (13); the second square pipe (142) is provided with a second slurry outlet (144) on the outer wall of one end close to the first square pipe (141). 7.The overhanging truss structure steel pipe concrete special-shaped pier of the bridge according to claim 6, characterized in that, the pier body (1) further comprises: a first poured concrete block (16), the bottom end of the tension column (12) and the second shear nail (121) are arranged in the first poured concrete block (16); The first shear nail (154) is arranged in the first cast-in-situ concrete block (16) and is arranged on the side of the tension column (12) close to the main beam (2); Further comprising: A post-cast concrete block (17) is arranged on the top surface of the first cast-in-situ concrete block (16) away from the tension column (12), and the bottom end of the third connecting piece (15) is arranged in the post-cast concrete block (17).
8. The overhanging truss structure steel pipe concrete special-shaped bridge pier according to claim 7, characterized in that, The cross section of the cross beam (113) is a U-shaped structure, and the top surface of the cross beam (113) is further provided with a plurality of folded plates (115), each of the folded plates (115) is arranged in a line, and each of the folded plates (115) is hingedly connected with each other; Further comprising a pressure bearing plate (116), one end of the pressure bearing plate (116) is connected with one end of the plurality of folded plates (115), and the pressure bearing plate (116) extends to both sides on the surface of the first square tube (141); The bottom surface of the pressure bearing plate (116) and the side wall of the first square tube (141) are provided with a reinforcing rib (117).