Temporary bridge pier support

Abstract

The invention relates to a pier temporary support which comprises a bottom hoop, a profile steel stand column, a discharging block, a middle truss, a cantilever truss, a distribution beam, a triangular truss, a bottom die and a steel pipe support, the bottom hoop is arranged on the lower portion of a pier column and arranged on a bearing platform, the profile steel stand column is provided with a stand column hoop and arranged on the bottom hoop, and the discharging block is arranged on the top of the profile steel stand column. The middle trusses are provided with middle truss hoops, the middle trusses are erected between the two adjacent pier columns, and the cantilever trusses are connected with the corresponding middle truss pieces; a plurality of distribution beams are arranged on the middle truss and the cantilever truss at intervals, the steel pipe supports comprise two sets of symmetrical steel pipe supports, the two sets of steel pipe supports are arranged on the two sides of the distribution beams respectively and can be used for a construction platform, and triangular trusses and bottom dies are further arranged on the distribution beams. A stable and flexible large cantilever bent cap supporting system can be formed, the safety in the construction process is ensured, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of temporary supports for bridge piers, and in particular to a temporary support for bridge piers. Background Art

[0002] In the construction of large cantilever cap beams, traditional support systems such as full-span support and steel pipe column systems have numerous shortcomings due to the long cantilevers. Full-span support construction occupies a large area, requires hardened site, and has a long construction period and high costs. Conventional steel pipe column systems, on the other hand, suffer from low efficiency, difficulty adjusting steel pipe columns, and extremely low utilization rates. Especially in projects such as highway expansion and reconstruction, where the scale of the work is large and the timelines are tight, a new construction method must be sought to address the various drawbacks of traditional construction techniques. Summary of the Invention

[0003] The purpose of the present invention is to provide a temporary support for a bridge pier to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temporary support for a bridge pier, the support comprising a bottom hoop, a steel column, a drop block, a middle truss, a cantilever truss, a distribution beam, a ladder, a triangular truss, a bottom formwork and a steel pipe support, the bottom hoop is arranged at the lower part of the pier column and on the pedestal, the steel column comprises a steel column body and a half-column hoop arranged on the steel column body for clasping the pier column, the steel columns are symmetrical, and the two symmetrical steel columns clamp one pier column, the drop block is arranged on the top of the steel column body, and the middle truss comprises two symmetrical middle truss pieces Each middle truss piece is provided with a half-middle truss clamp, the middle truss is erected between two adjacent piers, the cantilever truss includes two groups of cantilever trusses, each group of cantilever trusses includes two symmetrical cantilever truss pieces, and each cantilever truss piece is connected to the corresponding middle truss piece; a number of distribution beams are provided at intervals on the middle trusses and the cantilever trusses, the steel pipe bracket includes two symmetrical groups of steel pipe brackets, and the two groups of steel pipe brackets are respectively provided on both sides of the distribution beam, and the steel pipe bracket can be used for a construction platform, and a triangular truss is provided on the distribution beam of the two groups of steel pipe brackets, and a bottom formwork is provided on the triangular truss, and the ladder is provided next to the pier.

[0005] Preferably, the bottom clamp is formed by butting together two separate half-piece bottom clamps, and the top, bottom and side edges of each half-piece bottom clamp are provided with outwardly extending edges.

[0006] The extended edge and the outer wall of the half-piece bottom hoop are provided with corresponding reinforcing ribs.

[0007] Preferably, a columnar support portion protruding outward is provided in the middle of the semi-bottom hoop. The support portion is in the shape of a wedge with a larger upper part and a smaller lower part. The bottom of the main body of the profiled steel column is connected to the top of the support portion. A number of reinforcing ribs are provided on the outer wall of the support portion and the outer wall of the semi-bottom hoop.

[0008] Preferably, the middle truss sheet includes an upper middle truss cross beam, a lower middle truss cross beam, a middle truss connecting beam, and middle truss diagonal braces; semi-middle truss hoops are provided on both sides of the upper middle truss cross beam and the lower middle truss cross beam. A middle truss connecting beam is provided in the middle between the upper middle truss cross beam and the lower middle truss cross beam. The number of the middle truss diagonal braces is at least two, and the two ends of the middle truss diagonal braces are respectively connected to the upper middle truss cross beam and the lower middle truss cross beam; two tensioned precision rolled steels are inserted through the semi-middle truss hoops corresponding to two middle truss sheets.

[0009] Preferably, the cantilever truss sheet includes an upper cantilever truss cross beam, a lower cantilever truss cross beam, a cantilever truss connecting diagonal beam, and a number of cantilever truss diagonal braces. One end of the cantilever truss connecting diagonal beam is connected to the upper cantilever truss cross beam. One end of the upper cantilever truss cross beam and the other end of the cantilever truss connecting diagonal beam are respectively connected to the upper middle truss cross beam and the lower middle truss cross beam of the middle truss sheet; the other end of the upper cantilever truss cross beam is suspended in the air. One end of the lower cantilever truss cross beam is connected to the cantilever truss connecting diagonal beam, and the other end is suspended in the air. A number of cantilever truss diagonal braces are respectively connected to the upper cantilever truss cross beam and the lower cantilever truss cross beam.

[0010] Preferably, it further includes a lifeline vertical pole and a lifeline. The base of the lifeline vertical pole is formed by welding channel steels into a frame structure. After it can be directly sleeved on the middle truss and the cantilever truss, it is locked with the upper and lower wing plates through bolts on the frame and then used. The lifeline passes through the reserved holes on the rod body of the lifeline vertical pole.

[0011] Preferably, the steel pipe support includes vertical poles, horizontal bars, diagonal bars and fasteners. The vertical poles, horizontal bars and diagonal bars are all steel water pipes. Each vertical pole, horizontal bar and diagonal bar are connected by fasteners to form a stable space frame structure, and this space frame structure is set as a three-layer operation platform, with each layer being two meters high. The bottom I-beam of the operation platform is used as a support, and the bottom of the vertical pole is welded and fixed to the top surface of the I-beam. A tensioned steel pipe is provided between the tops of two groups of steel pipe supports.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The present invention uses a bottom hoop to firmly fix the bracket to the lower part of the pier column and the bearing platform. The height adjustment and stable support of the bracket are realized through the steel column and the drop block. The middle truss and the cantilever truss constitute the main load-bearing structure of the bracket, and the load is evenly transmitted to the steel pipe bracket through the distribution beam. In addition, compared with the traditional full hall bracket method and steel pipe column method, this bracket system reduces the costs of foundation treatment, foundation bearing capacity detection, etc., and components such as steel pipe brackets can be reused, reducing the construction cost. Correspondingly, the construction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic installation diagram of a half bottom hoop provided by the present invention;

[0015] Figure 2 It is a schematic installation diagram of the bottom hoop provided by the present invention;

[0016] Figure 3 It is a schematic installation diagram of a steel column provided by the present invention;

[0017] Figure 4 It is a schematic installation diagram of two groups of steel columns provided by the present invention;

[0018] Figure 5 It is a schematic installation diagram of the bracket components including the bottom hoop, steel column, drop block, middle truss and cantilever truss provided by the present invention;

[0019] Figure 6 It is a schematic installation diagram of a steel pipe bracket provided by the present invention;

[0020] Figure 7 It is a schematic installation diagram of two steel pipe brackets provided by the present invention;

[0021] Figure 8 It is a schematic installation diagram of three steel pipe brackets provided by the present invention;;

[0022] In the figure: bearing platform 1, pier column 2, bottom hoop 3, half bottom hoop (31; 32), extended edge 311, stiffener 312, support part 313, steel column 4, steel column main body 41, half column hoop 42, drop block 5, middle truss sheet 6, upper middle truss cross beam 61, lower middle truss cross beam 62, middle truss connecting beam 63, middle truss diagonal brace 64, half middle truss hoop 65, cantilever truss sheet 7, upper cantilever truss cross beam 71, lower cantilever truss cross beam 72, cantilever truss connecting diagonal beam 73, cantilever truss diagonal brace 74, steel pipe bracket 8, vertical pole 81, horizontal bar 82, diagonal bar 83, operation platform 84, tensioned steel pipe 85. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in an embodiment of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Please refer to Figure 1-8 : The present invention provides a temporary pier support. The support includes a bottom hoop 3, a steel column 4, a dropping block 5, a middle truss, a cantilever truss, a distribution beam (not shown), a ladder (not shown), a triangular truss (not shown), a bottom formwork (not shown), and a steel pipe support 8. The bottom hoop 3 is provided at the bottom of the pier and on the bearing platform 1. The steel column 4 includes a steel column main body 41 and a semi-column hoop 42 provided on the steel column main body 41 for hooping the pier. There are two symmetric steel columns 4, and the two symmetric steel columns 4 hoop one pier. The dropping block 5 is provided at the top of the steel column main body 41. The middle truss includes two symmetric middle truss sheets 6, and each middle truss sheet 6 is provided with a semi-middle truss hoop 65. The middle truss is erected between two adjacent piers. The cantilever truss includes 2 groups of cantilever truss, and each group of cantilever truss includes two symmetric cantilever truss sheets 7, and each cantilever truss sheet 7 is connected to the corresponding middle truss sheet 6; A number of distribution beams are provided at intervals on the middle truss and the cantilever truss. The steel pipe support 8 includes two symmetric groups of steel pipe supports 8, and the two groups of steel pipe supports 8 are respectively provided on both sides of the distribution beam. The steel pipe support 8 can be used for a construction platform. Triangular trusses are provided on the distribution beams of the two groups of steel pipe supports 8, and a bottom formwork is provided on the triangular trusses. The ladder is provided beside the pier. Through the organic combination of components such as the bottom hoop 3, the steel column 4, the dropping block 5, the middle truss, the cantilever truss, the distribution beam, the ladder, the triangular truss, the bottom formwork, and the steel pipe support 8, the support forms a stable and flexible large cantilever capping beam support system. This structure not only ensures the safety during the construction process, but also greatly improves the construction efficiency and provides reliable support for the construction of the capping beam. In addition, the support is firmly fixed to the bottom of the pier and the bearing platform 1 through the bottom hoop 3, ensuring the stability of the entire support system. At the same time, it can effectively disperse and transfer the load, reducing the direct pressure on the pier.

[0025] In this embodiment, preferably, the bottom hoop 3 is formed by butting two split semi-bottom hoops (31; 32). The top surface, bottom surface, and side edges of each semi-bottom hoop (31; 32) are provided with outwardly extending extension edges 311. Corresponding reinforcing ribs 312 are provided on the outer wall of the extension edge 311 and the semi-bottom hoop (31; 32). The design of the split semi-bottom hoops (31; 32) facilitates installation and disassembly, improving the construction efficiency. The setting of the extension edge 311 and the reinforcing rib 312 enhances the structural strength of the bottom hoop 3, enabling it to better bear and transfer the load, ensuring the stability of the support, and also facilitating the installation of the two semi-bottom hoops (31; 32).

[0026] In this embodiment, preferably, a columnar support portion 313 protruding outward is provided in the middle of the half-bottom hoop (31; 32). The support portion 313 is in a wedge shape with a larger upper part and a smaller lower part. The bottom of the main body 41 of the profiled steel column is connected to the top of the support portion 313. A number of reinforcing ribs 312 are provided on the outer wall of the support portion 313 and the outer wall of the half-bottom hoop (31; 32). The arrangement of the columnar support portion 313 improves the connection strength between the bottom hoop 3 and the profiled steel column 4, making the overall support more stable. At the same time, the wedge-shaped design of the support portion 313 helps to increase the contact area with the profiled steel column 4, improving the adaptability and stability of the support.

[0027] In this embodiment, preferably, the middle truss sheet 6 includes an upper middle truss cross beam 61, a lower middle truss cross beam 62, a middle truss connecting beam 63, and middle truss diagonal braces 64. Half middle truss hoops 65 are provided on both sides of the upper middle truss cross beam 61 and the lower middle truss cross beam. A middle truss connecting beam 63 is provided in the middle between the upper middle truss cross beam 61 and the lower middle truss cross beam. The number of middle truss diagonal braces 64 is at least 2, and the two ends of the middle truss diagonal braces 64 are respectively connected to the upper middle truss cross beam 61 and the lower middle truss cross beam 62. Two tensioned rolled steels are passed through the half middle truss hoops 65 corresponding to two middle truss sheets 6. This structural design enables the middle truss sheet 6 to have good load-bearing capacity and stability. The upper middle truss cross beam 61 and the lower middle truss cross beam 62 are connected by the middle truss connecting beam 63 and diagonal braces to form a stable frame structure, which can effectively bear and transfer loads. At the same time, the arrangement of the tensioned rolled steel further enhances the overall strength of the middle truss sheet 6.

[0028] In this embodiment, preferably, the cantilever truss sheet 7 includes an upper cantilever truss cross beam 71, a lower cantilever truss cross beam 72, a cantilever truss connecting diagonal beam 73, and a number of cantilever truss diagonal braces 74. One end of the cantilever truss connecting diagonal beam 73 is connected to the upper cantilever truss cross beam 71. One end of the upper cantilever truss cross beam 71 and the other end of the cantilever truss connecting diagonal beam 73 are respectively connected to the upper middle truss cross beam 61 and the lower middle truss cross beam 62 of the middle truss sheet 6. The other end of the upper cantilever truss cross beam 71 is suspended in the air. One end of the lower cantilever truss cross beam 72 is connected to the cantilever truss connecting diagonal beam 73, and the other end is suspended in the air. A number of cantilever truss diagonal braces 74 are respectively connected to the upper cantilever truss cross beam 71 and the lower cantilever truss cross beam 72. The design of the cantilever truss sheet 7 enables the support to cover a larger construction area and improves the construction efficiency. The upper cantilever truss cross beam 71 and the lower cantilever truss cross beam 72 are connected by the cantilever truss connecting diagonal beam 73 and diagonal braces to form a stable cantilever structure, which can bear a large cantilever load and ensure the safety of construction.

[0029] In this embodiment, preferably, it further includes a lifeline vertical pole 81 and a lifeline. The base of the lifeline vertical pole 81 is formed by welding channel steels into a frame structure. After it can be directly sleeved on the middle truss and the cantilever truss, it is locked with the upper and lower wing plates through bolts on the frame and then used. The lifeline passes through the reserved holes on the pole body of the lifeline vertical pole 81. The base of the lifeline vertical pole 81 can be directly sleeved on the middle truss and the cantilever truss and locked with the upper and lower wing plates through bolts, making the installation of the lifeline vertical pole 81 convenient and stable.

[0030] In this embodiment, preferably, the steel pipe support 8 includes a vertical pole 81, a cross bar 82, an inclined bar 83 and fasteners. The vertical pole 81, the cross bar 82 and the inclined bar 83 are all steel water pipes. The vertical pole 81, the cross bar 82 and the inclined bar 83 are connected by fasteners to form a stable space frame structure, and this space frame structure is set as a three-layer operation platform 84, with each layer being two meters high. The I-beam at the bottom of the operation platform 84 serves as a support, and the bottom of the vertical pole 81 is welded and fixed to the top surface of the I-beam. A tension steel pipe 85 is provided between the tops of the two groups of steel pipe supports 8. The design of the steel pipe support 8 makes the construction platform more stable and flexible. The vertical pole 81, the cross bar 82 and the inclined bar 83 are all steel water pipes, and a stable space frame structure is formed by connecting with fasteners, which can bear a large load. The setting of the three-layer operation platform 84 meets the construction requirements at different heights. Construction workers can carry out construction on the operation platform 84, improving the construction efficiency and construction safety. At the same time, the I-beam support at the bottom of the operation platform 84 and the welding and fixing at the bottom of the vertical pole 81 ensure the overall stability of the support. The tension steel pipe 85 between the tops of the two groups of steel pipe supports 8 further enhances the overall strength of the support.

[0031] The installation method of the present invention:

[0032] 1. Install the bottom hoop 3: Set the two split semi-bottom hoops (31; 32) on both sides of the bearing platform 1 respectively, and make the two semi-bottom hoops (31; 32) be in a closed state and set on the lower part of the pier body of a pier column 2, and connect them through bolts. Install the other two split semi-bottom hoops (31; 32) on the lower part of the pier body of the adjacent pier column 2 in the same way.

[0033] 2. Install the profiled steel column 4: Two symmetrical profiled steel columns 4 are in a group. The two symmetrical profiled steel columns 4 are respectively set on the top surfaces of the two support parts 313 of each bottom hoop 3, and the two split semi-bottom hoops (31; 32) are set at the bottom of the pier body and close to the pier body, and are fixed by bolts.

[0034] Connect the bottom of the profiled steel column main body 41 to the top of the support part 313. Multiple groups of profiled steel columns 4, such as two groups, can be installed in the up and down directions on one pier column. The adjacent two groups of profiled steel columns 4 are connected by bolts;

[0035] 3. Install the drop block 5: Install the drop block 5 on the top surface of the steel column 4;

[0036] 4. Install the middle truss: Symmetrically install two middle truss pieces 6 between the upper parts of adjacent two piers. The bottom of the middle truss piece 6 is located on the drop block 5, and the half middle truss hoops 65 of the two middle truss pieces 6 are hoop-mounted on the pier body, fixed with bolts, and use tensioned precision rolled steel to pass through and tighten the two half middle truss hoops 65;

[0037] 5. Install the cantilever truss: Connect the ends of two groups of cantilever truss pieces 7 to the corresponding ends of the middle truss piece 6 respectively, so as to form a suspended cantilever truss;

[0038] 6. Install the distribution beam: Set several distribution beams at intervals on the middle truss and the cantilever truss to ensure that the distribution beam is horizontal and stable;

[0039] 7. Install the lifeline vertical pole 81 and the lifeline: The base of the lifeline vertical pole 81 is welded by channel steel to form a frame structure. After it can be directly sleeved on the middle truss and the cantilever truss, it is locked with bolts on the upper and lower wing plates and then used. The lifeline passes through the reserved hole on the rod body of the lifeline vertical pole 81;

[0040] 8. Install the ladder and the operation platform 84: Install the ladder on the ground and install the walkway platform on both sides of the distribution beam;

[0041] 9. Install the triangular truss and the bottom formwork; Install the triangular truss in the middle of the distribution beam and install the bottom formwork;

[0042] 10. Install the steel pipe support 8: Before installing the steel pipe support 8, first assemble the support platform lying on the ground, and then turn it over and erect it. After it is erected and placed stably, use 2 steel pipes to drive diagonal braces on both sides in an opposing and staggered manner for firmness; After installing the steel pipe support 8, hoist the pre-assembled steel water pipe supports on the ground to both sides of the distribution beam respectively.

[0043] Among them, assembling the steel water pipe support includes the following steps:

[0044] 1. The steel pipe support 8 is composed of several vertical poles 81, horizontal bars 82, diagonal bars 83 and fasteners to form multiple bays of steel pipe supports 8, designed as a 3-layer operation platform 84, with a height of two meters for each layer. The bottom of the operation platform 84 uses I-beams as supports, and the bottom of the vertical pole 81 is welded and fixed to the top surface of the I-beam.

[0045] 2. First assemble the support platform lying on the ground, and then turn it over and erect it. After it is erected and placed stably, use 2 steel pipes to drive diagonal braces on both sides in an opposing and staggered manner for firmness;

[0046] Installing the steel water pipe support includes the following steps:

[0047] 1. The first bay:

[0048] Method ①: Start the installation from the end of the capping beam. After hoisting it in place and landing, use 2 steel pipes to support the triangular truss obliquely on the distribution beam and fix it to the pipe rack with fasteners; and use a hemp rope to tie to the other side of the truss to pull the pipe rack. After completing these two fixing measures, the crane can release the hook.

[0049] Method ②: Start the installation from the position corresponding to Pier 2. Use 2 steel pipes to support obliquely on the distribution beam, and then use a steel pipe to weld horizontally with the exposed steel bars of Pier 2, and connect to the pipe rack with fasteners.

[0050] 2. The second truss: Install symmetrically with the first truss. After hoisting and landing, use a steel pipe to pull in opposite directions with the first truss, one at the top and one at the bottom. After the opposite pulling is completed, the hook can be released.

[0051] 3. The third truss: Install horizontally. After hoisting it in place, install three connecting cross bars 82, upper, middle and lower, with the adjacent pipe racks, and connect no less than 3 vertical rods 81, connecting in a staggered manner. After the connection is completed, the hook can be released.

[0052] 4. The subsequent pipe racks are installed symmetrically and horizontally in sequence, and the connecting cross bars 82 are installed.

[0053] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. A temporary support for a bridge pier, characterized in that: The support includes a bottom hoop, a profiled steel column, a drop block, a middle truss, a cantilever truss, a distribution beam, a ladder, a triangular truss, a bottom formwork and a steel pipe support. The bottom hoop is arranged at the lower part of the pier column and on the bearing platform. The profiled steel column includes a profiled steel column main body and a semi-column hoop arranged on the profiled steel column main body for hooping the pier column. There are two symmetric profiled steel columns, and the two symmetric profiled steel columns hoop one pier column. The drop block is arranged at the top of the profiled steel column main body. The middle truss includes two symmetric middle truss sheets, and each middle truss sheet is provided with a semi-middle truss hoop. The middle truss is erected between two adjacent pier columns. The cantilever truss includes 2 groups of cantilever trusses, and each group of cantilever trusses includes two symmetric cantilever truss sheets, and each cantilever truss sheet is connected to the corresponding middle truss sheet. A number of distribution beams are arranged at intervals on the middle truss and the cantilever truss. The steel pipe support includes two symmetric groups of steel pipe supports, and the two groups of steel pipe supports are respectively arranged on both sides of the distribution beam. The steel pipe support can be used for a construction platform. A triangular truss is arranged on the distribution beams of the two groups of steel pipe supports, and a bottom formwork is arranged on the triangular truss. The ladder is arranged beside the pier column.

2. The temporary pier support according to claim 1, wherein: The bottom hoop is formed by butting two split semi-bottom hoops. An extending edge extending outward is provided at the top surface, bottom surface and side edge of each semi-bottom hoop, and corresponding reinforcing ribs are provided on the outer wall of the extending edge and the semi-bottom hoop.

3. The temporary support for bridge piers according to claim 2, characterized in that: A columnar support part protruding outward is arranged in the middle of the semi-bottom hoop. The support part is in a wedge shape with a larger upper part and a smaller lower part, and the bottom of the profiled steel column main body is connected to the top of the support part. A number of reinforcing ribs are provided on the outer wall of the support part and the outer wall of the semi-bottom hoop.

4. A temporary pier support according to claim 1, wherein: The middle truss sheet includes an upper middle truss cross beam, a lower middle truss cross beam, a middle truss connecting beam and a middle truss diagonal brace. Semi-middle truss hoops are provided on both sides of the upper middle truss cross beam and the lower middle truss cross beam. A middle truss connecting beam is arranged in the middle between the upper middle truss cross beam and the lower middle truss cross beam. The number of the middle truss diagonal braces is at least 2, and the two ends of the middle truss diagonal brace are respectively connected to the upper middle truss cross beam and the lower middle truss cross beam. Two tensioned rolled steels are penetrated through the semi-middle truss hoops corresponding to two middle truss sheets.

5. A temporary pier support according to claim 1, characterized in that: The cantilever truss sheet includes an upper cantilever truss cross beam, a lower cantilever truss cross beam, a cantilever truss connecting diagonal beam and a number of cantilever truss diagonal braces. One end of the cantilever truss connecting diagonal beam is connected to the upper cantilever truss cross beam. One end of the upper cantilever truss cross beam and the other end of the cantilever truss connecting diagonal beam are respectively connected to the upper middle truss cross beam and the lower middle truss cross beam of the middle truss sheet. The other end of the upper cantilever truss cross beam is suspended. One end of the lower cantilever truss cross beam is connected to the cantilever truss connecting diagonal beam, and the other end is suspended. A number of cantilever truss diagonal braces are respectively connected to the upper cantilever truss cross beam and the lower cantilever truss cross beam.

6. The temporary support for bridge piers according to claim 1, characterized in that: It also includes a lifeline vertical pole and a lifeline. The base of the lifeline vertical pole is formed by welding a channel steel into a frame structure. After it can be directly sleeved on the middle truss and the cantilever truss, it is locked with the upper and lower wing plates through bolts on the frame and then used. The lifeline passes through the reserved hole on the rod body of the lifeline vertical pole.

7. The temporary pier support according to claim 1, characterized in that: The steel pipe support includes vertical poles, horizontal bars, diagonal bars and fasteners. The vertical poles, horizontal bars and diagonal bars are all steel water pipes. The fasteners are used to connect each vertical pole, horizontal bar and diagonal bar to form a stable spatial frame structure, and this spatial frame structure is set as an operation platform with three layers, each layer being two meters high. The I-beam at the bottom of the operation platform serves as a support, and the bottom of the vertical pole is welded and fixed to the top surface of the I-beam. A tension steel pipe is provided between the tops of the two groups of steel pipe supports.

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