Pi-shaped beam rear fulcrum hanging basket walking structure of ultra-wide variable-width PC cable-stayed bridge

Abstract

The utility model discloses an ultra-wide and widening PC cable-stayed bridge pi-shaped beam rear fulcrum hanging basket walking structure which comprises a main truss system, the main truss system comprises two sets of main trusses, the main trusses are integrally perpendicular to a pi-shaped beam and are arranged in parallel to the length direction of the pi-shaped beam, and the main trusses are arranged in the length direction of the pi-shaped beam. The two main trusses are oppositely arranged on the two sides of the upper portion of the pi-shaped beam. And the middle lower cross beam is arranged below the main truss, is detachably connected with the main truss, and is parallel to the width direction of the pi-shaped beam. By installing the device in the hanging basket, the problem of space conflict between the hanging bracket and the stay cable in the walking process can be solved according to the mode of the patent, and construction is more convenient and faster. The walking hanging bracket is connected with the hanging basket main truss through the pin shaft, the structural stress is definite, the installation and the disassembly are very convenient, and the walking hanging bracket can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the field of cable-stayed bridge construction, in particular to a π-shaped beam rear support hanging basket walking structure of an ultra-wide variable-width PC cable-stayed bridge. Background Art

[0002] At present, conventional rear-supported hanging baskets are rarely used in PC cable-stayed bridges. When traveling, the side hangers transfer the load to the main truss through the traveling hangers, which causes the hanger point position to exceed both sides of the beam body. When the hanging basket is traveling, there is a certain conflict in the spatial position with the inclined cable. Utility Model Content

[0003] At present, due to the connection between the cable and the beam, the hanger and the pull rod may cross the cable in space, resulting in difficulty in the movement of the hanging basket. Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a hanging basket walking structure at the rear support point of the π-shaped beam of an ultra-wide variable-width PC cable-stayed bridge. The present application solves the problem of hanging basket walking by alternating the use of two hangers, and also provides a new solution for the walking of the hanging basket at the rear support point of the PC cable-stayed bridge.

[0004] The utility model is realized by constructing an ultra-wide variable-width PC cable-stayed bridge π-shaped beam rear support hanging basket walking structure, characterized in that it comprises a main truss system (200), the main truss system (200) comprises

[0005] A main truss (210), wherein the main truss (210) is perpendicular to the π-shaped beam as a whole, and the main truss (210) is arranged parallel to the length direction of the π-shaped beam, and the main truss (210) is provided with two groups, and the two groups of main trusses are arranged oppositely on both sides above the π-shaped beam; and

[0006] A middle and lower cross beam (230), the middle and lower cross beam (230) being arranged below the main truss (210) and being removably connected to the main truss (210), the middle and lower cross beam (230) being arranged parallel to the width direction of the π-shaped beam, a movable pad being arranged below the middle and lower cross beam, and the middle and lower cross beam being able to move linearly along the width direction of the π-shaped beam to adjust the width of a single group of the main trusses;

[0007] The rear fulcrum hanging basket also includes a walking system (500), and the walking system (500) can drive the main truss (210) to move along the length direction of the π-shaped beam, so that the bottom basket system (300) moves linearly accordingly.

[0008] Furthermore, each group of the main trusses (210) includes two groups of triangular trusses arranged in parallel, and the two groups of triangular trusses are connected via a main truss connecting frame (216).

[0009] Further; the triangular truss includes

[0010] A main longitudinal beam (213), the main longitudinal beam (213) being arranged horizontally as a whole and parallel to the length direction of the π-shaped beam, and the main longitudinal beam (213) being removably connected to the middle and lower cross beam (230); and

[0011] A main truss upright (211), wherein the main truss upright is arranged vertically as a whole, the bottom end of the truss upright (211) is fixedly connected to the middle part of the main longitudinal beam, and the top end of the main truss upright is connected to both ends of the main longitudinal beam via an inclined rod (212);

[0012] The main truss further comprises a main upper cross beam (214), the main upper cross beam (214) being fixed to the upper surface of one end of the main longitudinal beam (213), and the main upper cross beam (214) being connected to the bottom basket system (300) via an anchoring suspension system.

[0013] Furthermore, the two groups of main trusses (210) are connected by a main truss transverse tie rod (220), and the two groups of main trusses are formed into a whole by the main truss transverse tie rod, thereby preventing the hanging basket from being subjected to excessive force when walking or overturning to both sides due to unbalanced load during pouring.

[0014] Furthermore, the main truss (210) further comprises two groups of traveling hangers (215) arranged outside the main truss (210), the traveling hangers are cantilevered and extend to the outside of the main truss, and the traveling hangers are connected to the bottom basket system via the above-mentioned anchoring suspension system.

[0015] The utility model has the advantages:

[0016] 1. By installing this device in the hanging basket and using it in the patented manner, the problem of spatial conflict between the hanger and the inclined cable during walking can be solved, making construction more convenient.

[0017] 2. The traveling hanger is connected to the main truss of the hanging basket through a pin shaft. The structure has clear force, is very convenient to install and disassemble, and can be reused repeatedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the hanging basket walking structure;

[0019] Figure 2-Figure 3 yes Figure 1 Structural diagram of the main truss system in the hanging basket;

[0020] Figure 4 It is the front view of the main truss;

[0021] Figure 5-Figure 6 This is a schematic diagram of the rear support hanging basket of the π-shaped beam of the super-wide variable-width PC cable-stayed bridge. DETAILED DESCRIPTION

[0022] The following will be combined with the attached Figure 1-Figure 6The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a super wide variable width PC cable-stayed bridge π-shaped beam rear support hanging basket walking structure, such as Figure 1 As shown; comprising two main truss systems 200; the main truss system 200 comprises

[0024] A main truss 210, wherein the main truss 210 is perpendicular to the π-shaped beam 100 as a whole and is arranged parallel to the length direction of the π-shaped beam. The main truss 210 is provided with two groups, and the two groups of main trusses are arranged oppositely on both sides above the π-shaped beam; and

[0025] A middle and lower cross beam 230, which is disposed below the main truss 210 and is removably connected to the main truss 210. The middle and lower cross beam 230 is disposed parallel to the width direction of the π-shaped beam, and a movable pad is disposed below the middle and lower cross beam. The middle and lower cross beam can move linearly along the width direction of the π-shaped beam to adjust the width of a single group of the main trusses;

[0026] The rear fulcrum hanging basket also includes a walking system 500, which can drive the main truss 210 to move along the length direction of the π-shaped beam, so that the bottom basket system 300 moves linearly accordingly.

[0027] This application sets a movable pad under the middle and lower cross beam of the main truss, and the upper part is removably connected to the main longitudinal beam. When the main beam becomes wider and the support position needs to be adjusted, the bolts between the middle and lower cross beam and the main longitudinal beam are released, and the middle and lower cross beam is moved to the side truss direction to pre-tighten the bolts, and then the support position is readjusted according to calculation. In this way, the position and size of the reaction force of the hanging basket support are adjusted to achieve active control of the force on the main beam, so as to avoid the safety risks during the construction of ultra-wide main beams of PC cable-stayed bridges.

[0028] In this embodiment, the above-mentioned removable connection may be a connection using high-strength bolts.

[0029] In this embodiment, if Figure 3 , Figure 4 As shown, each group of the main trusses 210 includes two groups of triangular trusses arranged in parallel, and the two groups of triangular trusses are connected by a main truss connecting frame 216;

[0030] The triangular truss comprises

[0031] A main longitudinal beam 213, wherein the main longitudinal beam 213 is disposed horizontally as a whole and parallel to the length direction of the π-shaped beam, and the main longitudinal beam 213 is removably connected to the middle and lower cross beam 230; and

[0032] A main truss upright 211, which is vertically arranged as a whole, and the bottom end of the truss upright 211 is fixedly connected to the middle part of the main longitudinal beam, and the top end of the main truss upright is connected to the two ends of the main longitudinal beam through an inclined rod 212;

[0033] The main truss further includes a main upper cross beam 214 , which is fixed to the upper surface of one end of the main longitudinal beam 213 , and the main upper cross beam 214 is connected to the bottom basket system 300 through an anchoring suspension system.

[0034] The main truss of the triangular structure is used as the main force-bearing structure of the main truss system, so that the structure of the entire main truss system is more stable. In this embodiment, the top of the truss upright can be connected to the front diagonal rod 110 and the rear diagonal rod 111 through a pin shaft.

[0035] In this embodiment, if Figure 1 As shown, the two sets of main trusses 210 are connected by a main truss transverse tie rod 220. The two sets of main trusses are formed into a whole by the main truss transverse tie rod, so as to avoid excessive force when the hanging basket is walking or overturning to both sides due to eccentric load during pouring.

[0036] In addition, in order to facilitate the movement of construction workers, a climbing system can be provided on the main truss system, and a walkway system can be provided on the main truss system and the bottom basket system.

[0037] Due to the connection between the inclined cable and the beam, during the movement, the anchor suspension system may spatially intersect with the inclined cable, causing difficulty in the movement of the hanging basket.

[0038] Therefore, in order to solve the above technical problems, this embodiment is improved based on embodiment 1, such as Figure 4 As shown, different from Example 1, the main truss 210 also includes two groups of traveling hangers 215 arranged on the outside of the main truss 210, and the traveling hangers are cantilevered and extended to the outside of the main truss, and the traveling hangers are connected to the bottom basket system through the above-mentioned anchoring suspension system.

[0039] The above-mentioned traveling hanger is connected to the bottom basket system through the traveling side hanger, and the load of the bottom basket system is transferred to the hanger by the traveling side hanger 303, so that the main truss structure is finally subjected to stress. At the same time, during the walking process, the alternate use of the two hangers solves the problem that the hanger and the pull rod may cross with the inclined cable in space, thereby causing difficulty in walking of the hanging basket.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultra-wide variable-width PC cable-stayed bridge π-shaped beam rear support hanging basket walking structure, characterized in that ； The main truss system (200) includes A main truss (210), wherein the main truss (210) is perpendicular to the π-shaped beam as a whole, and the main truss (210) is arranged parallel to the length direction of the π-shaped beam, and the main truss (210) is provided with two groups, and the two groups of main trusses are arranged oppositely on both sides above the π-shaped beam; as well as A middle and lower cross beam (230), the middle and lower cross beam (230) being arranged below the main truss (210) and being removably connected to the main truss (210), the middle and lower cross beam (230) being arranged parallel to the width direction of the π-shaped beam, a movable pad being arranged below the middle and lower cross beam, the middle and lower cross beam (230) being able to move linearly along the width direction of the π-shaped beam to adjust the width of a single group of the main trusses; The rear fulcrum hanging basket also includes a walking system (500), and the walking system (500) can drive the main truss (210) to move along the length direction of the π-shaped beam, so that the bottom basket system (300) moves linearly accordingly.

2. According to claim 1, the rear support hanging basket walking structure of the ultra-wide variable-width PC cable-stayed bridge π-shaped beam is characterized by: Each group of the main trusses (210) comprises two groups of triangular trusses arranged in parallel, and the two groups of triangular trusses are connected via a main truss connecting frame (216); The triangular truss comprises A main longitudinal beam (213), the main longitudinal beam (213) being arranged horizontally as a whole and parallel to the length direction of the π-shaped beam, and the main longitudinal beam (213) and the middle and lower cross beam (230) being removably connected; as well as A main truss upright (211), the main truss upright being arranged vertically as a whole, the bottom end of the main truss upright (211) being fixedly connected to the middle of the main longitudinal beam, and the top end of the main truss upright being connected to both ends of the main longitudinal beam via an inclined rod (212); The main truss (210) further comprises a main upper cross beam (214), the main upper cross beam (214) being fixed to the upper surface of one end of the main longitudinal beam (213), and the main upper cross beam (214) being connected to the bottom basket system (300) via an anchoring suspension system.

3. According to claim 1, the rear support hanging basket walking structure of the ultra-wide variable-width PC cable-stayed bridge π-shaped beam is characterized in that; The two groups of main trusses (210) are connected via a main truss transverse tie rod (220), and the two groups of main trusses are formed into a whole via the main truss transverse tie rod, thereby preventing the hanging basket from being subjected to excessive force when traveling or from tipping over to both sides due to eccentric loading during pouring.

4. According to claim 1, the rear support hanging basket walking structure of the ultra-wide variable-width PC cable-stayed bridge π-shaped beam is characterized in that; The main truss (210) further comprises two groups of traveling hangers (215) arranged outside the main truss (210), the traveling hangers being cantilevered and extending to the outside of the main truss, and the traveling hangers being connected to the bottom basket system via an anchoring suspension system.

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