CN219386035U - Cast-in-situ bracket pre-pressing device for lower cross beam of main tower of cable-stayed bridge - Google Patents
Cast-in-situ bracket pre-pressing device for lower cross beam of main tower of cable-stayed bridge Download PDFInfo
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- CN219386035U CN219386035U CN202320630168.5U CN202320630168U CN219386035U CN 219386035 U CN219386035 U CN 219386035U CN 202320630168 U CN202320630168 U CN 202320630168U CN 219386035 U CN219386035 U CN 219386035U
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Abstract
The application discloses a cast-in-situ bracket pre-pressing device for a main tower lower cross beam of a cable-stayed bridge, which comprises an upright post fixed on a bearing platform, an upper anchor assembly arranged at the top end of the upright post, a lower anchor assembly arranged at the top end of the bearing platform, steel strands connected with the upper anchor assembly and the lower anchor assembly and a plurality of tensioning jacks; the two ends of the support are respectively fixed on tower limbs at two sides of the main tower, the anchor assembly comprises a support and a first distribution beam, the support is arranged at the top end of the upright post, and the first distribution beam is arranged at the top end of the support; the lower anchor assembly comprises a connecting column pre-buried in the bearing platform, a second distribution beam connected with the first distribution beam and the connecting column, the steel strands are fixedly connected with the second distribution beam, the steel strands are fixedly connected with the tensioning jack, and the tensioning jack is arranged at the top end of the first distribution beam. The method has the effect of improving the construction quality of the lower cross beam of the main tower of the cable-stayed bridge.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a cast-in-situ bracket pre-pressing device for a lower cross beam of a main tower of a cable-stayed bridge.
Background
Along with the rapid development of traffic industry, the requirements of highways on lines are increasingly increased, and bridges with high piers and large spans are generated and enter into constructed express ways. Meanwhile, safety problems in the bridge construction process are also becoming important.
The cast-in-situ bracket of the lower beam is used as a main supporting structure for bridge construction, and the safety of the cast-in-situ bracket is one of important preconditions for ensuring the smooth construction of the bridge. Prepressing is carried out on a lower cross beam bracket of a main tower of the cable-stayed bridge, and conventionally, a preloading method is adopted. The preloading method generally selects a pressurizing method according to the purpose of preloading: if the pre-compaction is to reduce the settlement of the building, pre-piling pressurization is adopted to enable the foundation settlement to be generated before the building is constructed; if the aim of pre-compaction is mainly to increase the foundation strength, the self-weight can be used for re-pressurization, i.e. the construction speed is slowed down or the drainage speed of the soil is increased, so that the foundation strength is increased to adapt to the increase of the self weight of the building.
For the technology, the construction progress is directly affected due to the reasons of sometimes insufficient sources of stacking materials, tension in transportation, difficult turnover and the like, so that the construction period is long and the engineering cost is high.
Disclosure of Invention
In order to improve the construction quality of the lower beam of the main tower of the cable-stayed bridge, the application provides a cast-in-situ bracket pre-pressing device of the lower beam of the main tower of the cable-stayed bridge.
The application provides a cast-in-place support pre-compaction device of cable-stayed bridge main tower bottom end rail adopts following technical scheme:
a pre-pressing device of a cast-in-situ bracket of a main tower lower cross beam of a cable-stayed bridge comprises two rows of upright posts fixed on a bearing platform, an upper anchor assembly arranged at the top end of the upright posts, a lower anchor assembly arranged at the top end of the bearing platform, a plurality of steel strands and a plurality of tensioning jacks, wherein the steel strands are connected with the upper anchor assembly and the lower anchor assembly; the two ends of the support are respectively fixed on two tower limbs of the main tower, the anchor assembly comprises a support and a plurality of first distribution beams, the support is arranged at the top end of the upright post, and the plurality of first distribution beams are arranged at the top end of the support; the lower anchor assembly comprises a plurality of connecting columns pre-buried in the bearing platform, a plurality of connection first distribution beams and second distribution beams of the connecting columns, one end of each steel strand is fixedly connected with the second distribution beams, the other end of each steel strand is fixedly connected with the tensioning jack, and the tensioning jack is arranged at the top end of the first distribution beams.
By adopting the technical scheme, before pouring a main tower bearing platform of a pier, connecting columns are pre-embedded in the bearing platform according to the projection position of a tensioning jack, and then concrete of the main tower bearing platform is poured; two rows of upright posts are arranged on a bearing table, after a pier main tower is poured on a pier top, two ends of a bracket are arranged on tower limbs at two sides of the main tower, the bracket is fixed at the top ends of the upright posts, the bracket is tensioned and anchored, and a first distribution cross beam is fixedly connected with the top ends of the bracket; tensioning the connecting column, and fixedly connecting the second distribution cross beam with the connecting column; the first distribution cross beam and the second distribution cross beam are connected by using steel strands, the steel strands pass through a tensioning jack, the tensioning jack is placed at the top of the first distribution cross beam, and the support is tensioned in a grading manner by using the tensioning jack.
Because a certain gap may exist in the mounting process of the bracket, under the action of load, partial inelastic deformation is generated besides elastic deformation, so that the bracket must be pre-pressed sufficiently according to the equivalent load of 110% of the weight of concrete to eliminate inelastic deformation, and meanwhile, the elastic deformation is measured, a load-deformation curve is drawn to find out the sinking amount of the bracket corresponding to the load bearing condition of the bracket, so that a basis is provided for determining the pre-camber of the bottom die of the lower beam of the main tower.
The utility model provides a support and tensioning jack carry out stretch-draw pre-compaction, but practice thrift support pre-compaction time greatly, reduce the security risk, reduce intensity of labour, practice thrift the pre-compaction cost, but tensioning jack reuse to improve the construction quality of cable-stayed bridge main tower bottom end rail.
Preferably, a plurality of pile top transverse distribution beams are arranged between the upright posts and the brackets, and two ends of each pile top transverse distribution beam are fixedly connected with two side tower limbs of the main tower respectively; a plurality of connecting steel pipes are arranged between the pile top transverse distribution beam and the support, one end of each connecting steel pipe is fixed at the top end of the pile top transverse distribution beam, an adjusting cushion block is fixed at the other end of each connecting steel pipe, and one end of each adjusting cushion block is fixedly connected with the support.
Through adopting above-mentioned technical scheme, when the both sides tower limb installing support of main tower, earlier with the horizontal distribution roof beam fixed mounting of pile bolck on the top of stand, the both ends fixed mounting of the horizontal distribution roof beam of pile bolck is on the both sides tower limb of main tower, fix the top at the horizontal distribution roof beam of pile bolck with connecting steel pipe, install the regulation cushion between connecting steel pipe and support simultaneously, after the installation, stretch-draw the support toward both sides, with support fixed mounting on connecting steel pipe again, the regulation cushion can be according to the stretch-draw condition of support, adjust at any time for the support keeps stable state on the horizontal distribution roof beam of pile bolck.
Preferably, the pre-pressing device further comprises a plurality of steel shoes made of thick steel plates, one end of each steel shoe is fixedly connected with one side tower limb of the main tower, and the other end of each steel shoe is fixedly connected with the pile top transverse distribution beam.
By adopting the technical scheme, the steel boots are arranged, so that two ends of the pile top transverse distribution beam are conveniently and fixedly arranged on two tower limbs on two sides of the main tower.
Preferably, the pre-pressing device is further provided with a plurality of connecting rods, one end of each connecting rod is fixedly connected with the upright post, and the other end of each connecting rod is fixedly connected with one tower limb of the main tower.
Through adopting above-mentioned technical scheme, set up the connecting rod, be connected stand and tower limb, improved the stability of stand.
Preferably, the connecting column comprises a finish rolling twisted steel, and the finish rolling twisted steel is fixedly connected with the second distribution beam; the bearing platform is provided with a plurality of mounting holes, the bearing platform corresponds the circumference lateral wall of mounting hole is provided with the steel sheet protective housing, the top of steel sheet protective housing is fixed with pre-buried anchor plate, finish rolling twisted steel's lateral wall is provided with spiral stirrup, spiral stirrup with mounting hole lateral wall threaded connection, finish rolling twisted steel with pre-buried anchor plate passes through anchor nut threaded connection.
Through adopting above-mentioned technical scheme, set up the mounting hole at the platform of weighing, be convenient for use finish rolling deformed bar installs the second distribution crossbeam on the bearing platform, set up the steel sheet protective housing in the mounting hole, help consolidating the mounting hole, use pre-buried anchor plate, be convenient for in being connected finish rolling deformed bar and mounting hole, set up spiral stirrup, improved the stability of finish rolling deformed bar in the mounting hole, and then improved when carrying out the stretch-draw to the second distribution crossbeam, the finish rolling deformed bar can be stabilized on the bearing platform, reduce the finish rolling deformed bar and break away from the bearing platform.
Preferably, a rubber plug is fixed at one end of the finish rolling twisted steel, which is far away from the steel plate protecting shell, and the rubber plug is fixedly connected with the top end of the bearing table.
Through adopting above-mentioned technical scheme, set up the rubber buffer, improved finish rolling twisted steel stability on the bearing platform, and then improved the stretch-draw effect of second distribution crossbeam.
Preferably, the second distribution beam is provided with a plurality of connecting holes, each finish rolling twisted steel is arranged on the connecting hole in a penetrating way, the top end of the second distribution beam is provided with a plurality of nuts, each finish rolling twisted steel is in threaded connection with each nut, and each nut is abutted to the top end of the second distribution beam.
Through adopting above-mentioned technical scheme, use the nut to fix finish rolling twisted steel on the second distribution crossbeam for the finish rolling twisted steel is inseparabler with the connection of second distribution crossbeam.
Preferably, the bracket comprises a plurality of bent frames, the bent frames are arranged at intervals in the horizontal direction, the bent frames comprise an upper connecting beam and a lower connecting beam, a plurality of reinforcing beams are arranged between the upper connecting beam and the lower connecting beam, one end of each reinforcing beam is fixedly connected with the upper connecting beam, and the other end of each reinforcing beam is fixedly connected with the lower connecting beam; the upper connecting beams are fixedly connected with the first distribution cross beam, the lower connecting beams are connected through channel steel, and the channel steel is fixedly connected with the upright post.
Through adopting above-mentioned technical scheme, set up a plurality of bent and constituteed the support, improved the holistic stability of support, set up the stiffening beam between entablature and bottom end rail, can improve the stability of bent.
In summary, the present application includes at least one of the following beneficial technical effects:
1. because a certain gap may exist in the mounting process of the bracket, under the action of load, partial inelastic deformation is generated besides elastic deformation, so that the bracket must be pre-pressed sufficiently according to the equivalent load of 110% of the weight of concrete to eliminate inelastic deformation, and meanwhile, the elastic deformation is measured, a load-deformation curve is drawn to find out the sinking amount of the bracket corresponding to the load bearing condition of the bracket, so that a basis is provided for determining the pre-camber of the bottom die of the lower beam of the main tower.
2. The support and the tensioning jack are used for tensioning pre-compaction, the support pre-compaction time can be greatly saved, the safety risk is reduced, the labor intensity is reduced, the pre-compaction cost is saved, the tensioning jack can be repeatedly utilized, and therefore the construction quality of the cast-in-situ support of the lower beam of the main tower of the cable-stayed bridge is improved.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a cut-away top view of the overall structure of an embodiment of the present application.
Fig. 3 is a side view of a stent according to an embodiment of the present application.
FIG. 4 is a schematic diagram of the connection of the lower anchor assembly to the weighing station according to an embodiment of the present application.
FIG. 5 is a schematic diagram of the connection of the lower anchor assembly to the weighing station according to an embodiment of the present application.
Reference numerals illustrate:
101. tower limbs; 102. a bearing table; 1. a column; 11. a connecting rod; 2. an anchor assembly; 21. a first distribution beam; 22. a bracket; 221. a bent frame; 222. an upper connecting beam; 223. a lower connection beam; 224. a stiffening beam; 23. channel steel; 3. an anchor assembly; 31. a connecting column; 311. finish rolling the deformed bar; 312. a steel plate protective shell; 313. embedding an anchor plate; 314. spiral stirrups; 315. an anchor nut; 316. a rubber stopper; 317. a screw cap; 32. a second distribution beam; 4. steel strand; 5. tensioning jack; 6. pile top transverse distribution beams; 61. connecting steel pipes; 62. adjusting the cushion block; 7. steel boots.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a cast-in-situ bracket pre-pressing device for a main tower lower cross beam of a cable-stayed bridge.
Referring to fig. 1 and 2, a pre-pressing device of a cast-in-situ bracket of a lower cross beam of a main tower of a cable-stayed bridge comprises two rows of upright posts 1 fixed on a bearing table 102, an upper anchor assembly 2 arranged at the top ends of the upright posts 1, a lower anchor assembly 3 arranged at the top ends of the bearing table 102, 12 steel strands 4 and 12 tensioning jacks 5 connected with the upper anchor assembly 2 and the lower anchor assembly 3; four upright posts 1 are arranged in each row, two ends of a bracket 22 are respectively fixed on tower limbs 101 at two sides of a main tower, an upper anchor assembly 2 comprises the bracket 22 and a pair of first distribution cross beams 21, the bracket 22 is arranged at the top ends of the upright posts 1, and the two first distribution cross beams 21 are arranged at the top ends of the bracket 22; the lower anchor assembly 3 comprises a plurality of connecting columns 31 pre-buried in the bearing platform 102, a pair of second distribution beams 32 connected with the first distribution beams and the connecting columns 31, one end of each steel strand 4 is fixedly connected with the second distribution beams 32, the other end of each steel strand 4 is fixedly connected with the tensioning jack 5, and the tensioning jack 5 is arranged at the top end of the first distribution beam 21. The support 22 and the tensioning jack 5 are used for tensioning and prepressing, so that the time for prepressing the support 22 can be greatly saved, the safety risk is reduced, the labor intensity is reduced, the prepressing cost is saved, the tensioning jack 5 can be reused, and the construction quality of the lower beam of the main tower of the cable-stayed bridge is improved.
Referring to fig. 1 and 3, the rack 22 includes 14 bent 221, and the 14 bent 221 are arranged at intervals in a horizontal direction. The bent 221 comprises an upper connecting beam 222 and a lower connecting beam 223, a plurality of reinforcing beams 224 are arranged between the upper connecting beam 222 and the lower connecting beam 223, one end of each reinforcing beam 224 is fixedly connected with the upper connecting beam 222, and the other end of each reinforcing beam 224 is fixedly connected with the lower connecting beam 223; the upper connecting beam 222 is fixedly connected with the first distributing beam 21, the plurality of lower connecting beams 223 are connected through channel steel 23, and the channel steel 23 is fixedly connected with the upright 1. The channel steel 23 is a channel steel 23 of 20 # type. The model numbers of the upper connection beam 222 and the lower connection beam 223 are HN700 section steel. The plurality of bent frames 221 are arranged to form the support 22, so that the overall stability of the support 22 is improved, and the reinforcing beam 224 is arranged between the upper cross beam and the lower cross beam, so that the stability of the bent frames 221 can be improved.
Referring to fig. 2, each of the second distribution beams 32 includes a pair of distribution beams, and two distribution beams are fixedly connected by a plurality of finish-rolled screw steels, thereby facilitating an improvement in stability of the second distribution beam 32.
Referring to fig. 1, a plurality of pile top transverse distribution beams 6 are arranged between a column 1 and a bracket 22, and two ends of each pile top transverse distribution beam 6 are fixedly connected with two tower limbs 101 at two sides of a main tower respectively; a plurality of connecting steel pipes 61 are arranged between the pile-top transverse distribution beam 6 and the support 22, one end of each connecting steel pipe 61 is fixed at the top end of the pile-top transverse distribution beam 6, the other end of each connecting steel pipe 61 is fixed with an adjusting cushion block 62, and one end of each adjusting cushion block 62 is fixedly connected with the support 22. The adjusting cushion block 62 can be adjusted at any time according to the tensioning condition of the support 22, so that the support 22 is kept in a stable state on the pile top transverse distribution beam 6.
The prepressing device further comprises a plurality of steel shoes 7 made of 20m thick steel plates, one end of each steel shoe 7 is fixedly connected with one side tower limb 101 of the main tower, and the other end of each steel shoe 7 is fixedly connected with the pile top transverse distribution beam 6.
Referring to fig. 1, the pre-pressing device is further provided with a plurality of connection rods 11, one end of each connection rod 11 is fixedly connected with the upright 1, and the other end of each connection rod 11 is fixedly connected with one of the tower limbs 101 of the main tower. The connecting rod 11 is arranged to connect the upright 1 with the tower limb 101, so that the stability of the upright 1 is improved.
Referring to fig. 4 and 5, the connection column 31 includes finish-rolled screw bars 311, and the finish-rolled screw bars 311 are fixedly connected with the second distribution beam 32; the bearing platform 102 has seted up a plurality of mounting holes, and the corresponding mounting hole of bearing platform 102 is provided with steel sheet protective housing 312 along the week lateral wall, and steel sheet protective housing 312's top is fixed with pre-buried anchor plate 313, and finish rolling twisted steel 311's lateral wall is provided with spiral stirrup 314, spiral stirrup 314 and mounting hole lateral wall threaded connection, and finish rolling twisted steel 311 passes through anchor nut 315 threaded connection with pre-buried anchor plate 313.
The end of finish rolling twisted steel 311, which is far away from steel plate protecting shell 312, is fixed with a rubber stopper 316, and rubber stopper 316 is fixedly connected with the top end of bearing table 102. The rubber plugs 316 are arranged, so that stability of the finish rolling deformed steel bars 311 on the bearing table 102 is improved, and tensioning effect of the second distribution beam 32 is further improved.
Referring to fig. 4, the second distribution beam 32 is provided with a plurality of connection holes, each finish rolling twisted steel 311 is arranged on the connection hole in a penetrating manner, a plurality of nuts 317 are arranged at the top end of the second distribution beam 32, each finish rolling twisted steel 311 is connected with each nut 317 in a threaded manner, and each nut 317 is abutted to the top end of the second distribution beam 32. The use of the nuts 317 to secure the finish rolling screw bars 311 to the second distribution beam 32 makes the connection of the finish rolling screw bars 311 to the second distribution beam 32 tighter.
The implementation principle of the cast-in-situ bracket pre-pressing device for the lower cross beam of the main tower of the cable-stayed bridge is as follows:
before pouring a main tower bearing platform 102 of a bridge pier, embedding a connecting column 31 in the bearing platform 102 according to the projection position of a tensioning jack 5, and then pouring concrete of the main tower bearing platform 102; after the pier main tower is poured to the pier top, two ends of a support 22 are arranged on tower limbs 101 at two sides of the main tower, the support 22 is fixed at the top ends of the upright posts 1, the support 22 is tensioned and anchored, and a first distribution beam 21 is fixedly connected with the top ends of the support 22; stretching the connecting column 31, and fixedly connecting the second distribution beam 32 with the connecting column 31; the first distribution beam 21 and the second distribution beam 32 are connected by using the steel strands 4, the steel strands 4 pass through the tensioning jack 5, the tensioning jack 5 is placed on the top of the first distribution beam 21, and the brackets 22 are tensioned in a grading manner by using the tensioning jack 5.
The lower beam bracket 22 is preloaded by a counter top tension preload in combination with previous experience. The arrangement and stress of the support 22 of the lower cross beam must meet the requirements of construction design, after the arrangement is completed, the support 22 is reversely pulled and preloaded according to concrete subareas by utilizing the tensioning jack 5 and the ∅ 15.2.2 steel strand 4, and the reverse pulling load is 1.1 times of the weight of the designed beam so as to eliminate the inelastic deformation of the support 22 and the foundation, and the elastic deformation of the support 22 and the foundation is measured. When loading, according to 60%, 100% and 110% design load, three-stage loading is carried out, after the support 22 is stable, the settlement at the fixed point is measured and compared with the settlement measured for the first time, the settlement of the support 22 is calculated, the pre-camber is set according to the settlement value, and the height of the template is determined. And (3) during unloading, the load is subjected to three-stage unloading according to 60%, 100% and 110% of design loads, and after all unloading is finished, the elevation of the bottom die is measured, and the elastic deformation of the support 22 is calculated. After the pre-pressing is completed and the template adjustment is completed, it is checked again whether the steel pipe support 22 and the template are firm.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge is characterized by comprising two rows of upright posts (1) fixed on a bearing table (102), an upper anchor assembly (2) arranged at the top end of the upright posts (1), a lower anchor assembly (3) arranged at the top end of the bearing table (102), a plurality of steel strands (4) connected with the upper anchor assembly (2) and the lower anchor assembly (3) and a plurality of tensioning jacks (5); the two ends of the support (22) are respectively fixed on tower limbs (101) at two sides of the main tower, the upper anchor assembly (2) comprises the support (22) and a plurality of first distribution beams (21), the support (22) is arranged at the top end of the upright post (1), and the plurality of first distribution beams (21) are arranged at the top end of the support (22); the lower anchor assembly (3) comprises a plurality of connecting columns (31) pre-buried in the bearing table (102), a plurality of connecting first distribution beams and second distribution beams (32) of the connecting columns (31), one end of each steel strand (4) is fixedly connected with the second distribution beams (32), the other end of each steel strand (4) is fixedly connected with the tensioning jack (5), and the tensioning jack (5) is arranged at the top end of the first distribution beam (21).
2. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge according to claim 1, wherein a plurality of pile top transverse distribution beams (6) are arranged between the upright post (1) and the bracket (22), and two ends of each pile top transverse distribution beam (6) are fixedly connected with two side tower limbs (101) of the main tower respectively; a plurality of connecting steel pipes (61) are arranged between the pile top transverse distribution beam (6) and the support (22), one end of each connecting steel pipe (61) is fixed at the top end of the pile top transverse distribution beam (6), an adjusting cushion block (62) is fixed at the other end of each connecting steel pipe (61), and one end of each adjusting cushion block (62) is fixedly connected with the support (22).
3. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge according to claim 2, wherein the pre-pressing device further comprises a plurality of steel shoes (7) made of thick steel plates, one end of each steel shoe (7) is fixedly connected with one side tower limb (101) of the main tower, and the other end of each steel shoe (7) is fixedly connected with the pile top transverse distribution beam (6).
4. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge according to claim 1, wherein the pre-pressing device is further provided with a plurality of connecting rods (11), one end of each connecting rod (11) is fixedly connected with the upright post (1), and the other end of each connecting rod (11) is fixedly connected with one tower limb (101) at one side of the main tower.
5. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge according to claim 1, wherein the connecting column (31) comprises a finish rolling twisted steel (311), and the finish rolling twisted steel (311) is fixedly connected with the second distribution cross beam (32); the bearing platform (102) is provided with a plurality of mounting holes, the bearing platform (102) corresponds the circumference lateral wall of mounting hole is provided with steel sheet protective housing (312), the top of steel sheet protective housing (312) is fixed with pre-buried anchor plate (313), the lateral wall of finish rolling twisted steel (311) is provided with spiral stirrup (314), spiral stirrup (314) with mounting hole lateral wall threaded connection, finish rolling twisted steel (311) with pre-buried anchor plate (313) are through anchor nut (315) threaded connection.
6. The pre-pressing device for the cast-in-situ bracket of the main tower lower cross beam of the cable-stayed bridge according to claim 5, wherein a rubber plug (316) is fixed at one end of the finish rolling twisted steel (311) away from the steel plate protecting shell (312), and the rubber plug (316) is fixedly connected with the top end of the bearing table (102).
7. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge according to claim 5, wherein the second distribution cross beam (32) is provided with a plurality of connecting holes, each finish rolling twisted steel (311) is arranged on the connecting hole in a penetrating way, the top end of the second distribution cross beam (32) is provided with a plurality of nuts (317), each finish rolling twisted steel (311) is in threaded connection with each nut (317), and each nut (317) is abutted to the top end of the second distribution cross beam (32).
8. The pre-pressing device for the cast-in-situ bracket of the lower cross beam of the main tower of the cable-stayed bridge according to claim 1, wherein the bracket (22) comprises a plurality of bent frames (221), the plurality of bent frames (221) are arranged at intervals towards the horizontal direction, the bent frames (221) comprise an upper connecting beam (222) and a lower connecting beam (223), a plurality of reinforcing beams (224) are arranged between the upper connecting beam (222) and the lower connecting beam (223), one end of each reinforcing beam (224) is fixedly connected with the upper connecting beam (222), and the other end of each reinforcing beam (224) is fixedly connected with the lower connecting beam (223); the upper connecting beams (222) are fixedly connected with the first distribution cross beam (21), the lower connecting beams (223) are connected through channel steel (23), and the channel steel (23) is fixedly connected with the upright post (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320630168.5U CN219386035U (en) | 2023-03-25 | 2023-03-25 | Cast-in-situ bracket pre-pressing device for lower cross beam of main tower of cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320630168.5U CN219386035U (en) | 2023-03-25 | 2023-03-25 | Cast-in-situ bracket pre-pressing device for lower cross beam of main tower of cable-stayed bridge |
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| Publication Number | Publication Date |
|---|---|
| CN219386035U true CN219386035U (en) | 2023-07-21 |
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|---|---|---|---|
| CN202320630168.5U Active CN219386035U (en) | 2023-03-25 | 2023-03-25 | Cast-in-situ bracket pre-pressing device for lower cross beam of main tower of cable-stayed bridge |
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| Country | Link |
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| CN (1) | CN219386035U (en) |
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- 2023-03-25 CN CN202320630168.5U patent/CN219386035U/en active Active
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