CN212103624U

CN212103624U - Assembled prefabricated assembled reverse sling and arch combined pedestrian bridge

Info

Publication number: CN212103624U
Application number: CN202020175938.8U
Authority: CN
Inventors: 童景盛; 张伟强; 赵国锐
Original assignee: North China Municipal Engineering Design and Research Institute Co Ltd
Current assignee: North China Municipal Engineering Design and Research Institute Co Ltd; CSCEC Aecom Consultant Co Ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-12-08
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses a prefabricated anti-hoist cable of assembling of assembled and hunch combination footbridge belongs to the bridge engineering field, has solved the inconvenient transportation of current footbridge, the difficult problem of construction. The utility model discloses a two hoist cables, two arch ribs, many jib, prefabricated decking of polylith and two hunches, two hunches are located the bridge both ends respectively, two hoist cable parallel arrangement, two arch rib parallel arrangement, the arch rib is located the hoist cable top, hoist cable and arch rib both ends link to each other with two hunches respectively, the vertical equipartition of many jib is connected between hoist cable and arch rib, polylith decking is arranged in succession and is installed on the hoist cable, the arch rib is prefabricated for the subsection. The utility model discloses use anti-draw bridge as the rationale, cable, hunch form the self-balancing system, and the bridge is slim and graceful, the atress is succinct, the transportation of being convenient for, and the construction is simple.

Description

Assembled prefabricated assembled reverse sling and arch combined pedestrian bridge

Technical Field

The utility model belongs to the bridge engineering field, concretely relates to prefabricated anti-hoist cable of assembling of assembled and hunch combination passenger bridge.

Background

At present, the conventional pedestrian bridges such as reinforced concrete, prestressed concrete, simple arch and the like must be cast in situ or erected in whole holes after prefabrication, and are not suitable for being used in mountainous areas with poor transportation conditions and difficult construction.

In the course of the suspension bridge reviving at the end of the 20 th century, China built self-anchored suspension bridges of various stiffening beam materials and different cross-section forms. Self-anchored suspension bridges are increasingly used in china. At present, the Chinese self-anchored suspension bridge is developing more deeply from inland to sea towards a large-span and complex system.

At present, many bridges use a suspension bridge structure mode, and the application range of the suspension bridge structure mainly comprises large span and extra large span. The main cable of the suspension bridge is made of high-strength steel, is uniformly stressed and has strong spanning capability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prefabricated anti-hoist cable of assembling of assembled and hunch combination passenger bridge to solve the inconvenient transportation of current passenger bridge, the difficult problem of construction.

The technical scheme of the utility model is that: the utility model provides a prefabricated anti-hoist cable of assembling of assembled and hunch combination passenger bridge, including two hoist cables, two arch ribs, many jibs, prefabricated decking of polylith and two hunch seats, two hunch seats are located the bridge both ends respectively, two hoist cable parallel arrangement, two arch rib parallel arrangement, the arch rib is located the hoist cable top, hoist cable and arch rib both ends link to each other with two hunch seats respectively, the vertical equipartition of many jib is connected between hoist cable and arch rib, polylith decking arranges in succession and installs on the hoist cable, the arch rib is prefabricated for the subsection, assemble the connection at the scene of assembling.

As a further improvement of the utility model, the two ends of the bottom of the bridge deck are respectively provided with a notch, and the notches are buckled on the sling.

As a further improvement, the utility model is provided with a buffer stopper between the adjacent bridge deck boards, and the buffer stopper is connected with the sling.

As a further improvement of the utility model, the sling and the arch rib are both in a secondary parabola shape, and the sling and the arch rib are arranged relatively.

As a further improvement of the utility model, the sling and the end part of the arch rib are hinged and anchored on the arch seat.

As the utility model discloses a further improvement is equipped with the tensioning hole on the arch rib, and the jib passes the tensioning hole, and the jib is connected with the arch rib and adopts flexible jib anchor system mode, reserves certain space between jib and the arch rib tensioning hole, and built-in shock attenuation facility forms articulatedly.

As a further improvement of the utility model, the lower end of the suspender is provided with a connecting ball, the connecting ball is worn on the sling, and the sling and the joint of the connecting ball are provided with a limiting device.

As a further improvement, the utility model is provided with a cross brace between two arch ribs to strengthen the transverse stability.

The utility model has the advantages that:

1. the utility model relates to an assembled prefabricated reverse sling and arch combination pedestrian bridge, which is a cable and arch combination structure, fully utilizes the flexible characteristic of a suspension bridge and the rigid characteristic of an arch bridge arch, takes a reverse suspension bridge as a basic principle, and forms a self-balancing system by the cable and the arch, and highlights the characteristics of lightness, simple stress, innovation and practicability of a bridge in a mountainous area; the structure is simple and light, the appearance is beautiful, the material is saved, and the dead weight is light;

2. the utility model discloses the atress is clear and definite, and the jib forms elastic support to the bridge floor system, can reduce the moment of flexure of girder greatly, and the hoist cable is as no thrust or few thrust structure, and its arch rib moment of flexure and shear force value are far less, have given full play to the arch rib and have used the pressure-bearing to give first place to the atress characteristics, form the self-balancing system with the arch through the jib, pass through pavement decking and pass through the cable, load in the arch rib through the jib, arch rib horizontal thrust and cable tension are balanced each other;

3. the bridge deck in the utility model is prefabricated in blocks, transported in blocks, assembled on site, and adopts a fully assembled structure in the construction process, so that the bridge deck is easy to replace and maintain and is very suitable for the application in mountainous terrain and areas with poor transportation conditions;

4. the bridge deck of the utility model is buckled on the sling to improve the aesthetic property and reduce the dead weight of the structure;

5. the utility model discloses simple and easy, economic nature is higher, the commonality is strong.

Drawings

FIG. 1 is an elevation view of an assembled prefabricated anti-sling and arch composite footbridge;

FIG. 2 is a cross-sectional view of a fabricated assembled anti-sling and arch composite footbridge;

fig. 3 is a three-dimensional view of the mid-arch according to the present invention;

fig. 4 is a schematic structural diagram of the middle bridge deck of the present invention.

In the drawings, 1-sling; 2-arch rib; 3-a suspender; 4-a bridge deck; 41-notch; 5-arch support; 6-protective net railing; 7-horizontal bracing; 8-abutment; 9-ground line.

Detailed Description

The following examples may further illustrate the invention but are not intended to limit the invention in any way.

Examples 1,

As shown in fig. 1-4, a prefabricated anti-hoist cable of assembling of assembled and hunch combination pedestrian bridge, including two hoist cables 1, two rib 2, many jibs 3, prefabricated decking 4 of polylith and two hunch seats 5, two hunch seats 5 are located the bridge both ends respectively, two hoist cables 1 parallel arrangement, two rib 2 parallel arrangement, rib 2 is located hoist cable 1 top, hoist cable 1 and 2 both ends of rib link up with two hunch seats 5 respectively, the vertical equipartition of many jib 3 is connected between hoist cable 1 and rib 2, polylith decking 4 arranges in succession and installs on hoist cable 1, rib 2 is prefabricated for the subsection.

The two ends of the bottom of the bridge deck 4 are respectively provided with a notch 41, and the notches 41 are buckled on the sling 1, so that the bridge deck 4 and the sling 1 are fixed.

A buffer limiting block is arranged between the adjacent bridge decks 4 and connected with the sling 1. The buffer limiting block is a rubber block, and the bottom of the buffer limiting block is provided with a notch as the bridge deck 4 and is buckled on the sling 1.

The sling 1 and the arch rib 2 both adopt a quadratic parabola shape, and the sling 1 and the arch rib 2 are oppositely arranged.

The end parts of the sling 1 and the arch rib 2 are hinged and anchored on the arch base 5.

The arch rib 2 is provided with a tensioning hole, the suspender 3 passes through the tensioning hole, the suspender 3 is connected with the arch rib 2 by adopting a flexible suspender anchoring system mode, a certain space is reserved between the suspender 3 and the tensioning hole of the arch rib 2, and a damping facility is arranged in the space to form a hinge joint. The hanger rods 3 are connected with the arch ribs 2 in an anchor box tensioning and anchoring mode.

The lower end of the suspender 3 is provided with a connecting ball which is penetrated on the sling 1, and the joint of the sling 1 and the connecting ball is provided with a limiting device. The left end and the right end of the connecting ball adopt adaptive rubber tubes as limiting devices for fixing the sling 1 and the suspender 3.

A cross brace 7 is arranged between the two arch ribs 2.

A protective net railing 6 is arranged along the length direction of the sling 1.

The arch rib 2 adopts a hollow steel pipe; the sling 1 adopts a galvanized anti-corrosion cable; the suspender 3 adopts a solid round steel suspender; the protective net railing 6 is made of flexible material.

The two arch ribs 2 are provided with 3 steel crossbars 7 near the midspan, as shown in figure 1.

The construction method comprises the following steps:

A. the arch rib 2 is prefabricated in sections (5 m sections) in a factory, the tensioning hole of the suspender 3 and the tensioning anchor plate (the tensioning anchor plate is a component of a tensioning anchor box) are reserved, and the arch rib 2 is transported to the site after the factory trial assembly is qualified; the bridge deck 4 is prefabricated in sections (0.5 m sections) in a factory, and a groove for accommodating the suspender 3 is reserved;

B. pier 8 of the site construction bridge and a support for auxiliary construction (the position of a ground line 9 is shown in figure 1);

C. an arch support 5 is arranged on the abutment 8, the arch rib 2 and the cross brace 7 are assembled and welded by using a support, the sling 1 is arranged, and the arch rib 2 and the sling 1 are anchored on the arch support 5;

D. installing bridge deck plates 4 and suspenders 3, buckling buffer limit blocks between adjacent bridge deck plates 4, and tensioning the suspenders 3 and slings 1;

E. and a flexible protective net railing 6 is installed.

Claims

1. The utility model provides an assembled prefabricated anti-hoist cable of assembling and hunch combination foot bridge which characterized in that: including two hoist cable (1), two arch rib (2), many jib (3), polylith decking (4) and two hunch seat (5), two hunch seat (5) are located the bridge both ends respectively, two hoist cable (1) parallel arrangement, two arch rib (2) parallel arrangement, arch rib (2) are located hoist cable (1) top, hoist cable (1) and arch rib (2) both ends link to each other with two hunch seat (5) respectively, many jib (3) equipartition are between hoist cable (1) and arch rib (2), polylith decking (4) are arranged in succession and are installed on hoist cable (1), arch rib (2) are prefabricated for the subsection.

2. The fabricated prefabricated assembled anti-sling and arch combined footbridge as claimed in claim 1, wherein: the two ends of the bottom of the bridge deck (4) are respectively provided with a notch (41), and the notches (41) are buckled on the sling (1).

3. The fabricated prefabricated assembled anti-sling and arch combined footbridge as claimed in claim 2, wherein: a buffer limiting block is arranged between the adjacent bridge decks (4) and connected with the sling (1).

4. A fabricated assembled reverse sling and arch composite footbridge as defined in any one of claims 1-3, wherein: the sling (1) and the arch rib (2) are in a quadratic parabola shape, and the sling (1) and the arch rib (2) are arranged oppositely.

5. The fabricated prefabricated assembled anti-sling and arch combined footbridge as claimed in claim 4, wherein: the end parts of the sling (1) and the arch rib (2) are hinged and anchored on the arch support (5).

6. The fabricated prefabricated assembled anti-sling and arch combined footbridge as claimed in claim 5, wherein: the arch rib (2) is provided with a tensioning hole, the suspender (3) penetrates through the tensioning hole, the suspender (3) is connected with the arch rib (2) in a flexible suspender anchoring system mode, a certain space is reserved between the suspender (3) and the tensioning hole of the arch rib (2), and a damping facility is arranged in the space to form hinging.

7. The fabricated prefabricated assembled anti-sling and arch combined footbridge of claim 6, wherein: the lower end of the suspender (3) is provided with a connecting ball, the connecting ball is penetrated on the sling (1), and the joint of the sling (1) and the connecting ball is provided with a limiting device.

8. The fabricated prefabricated assembled anti-sling and arch combined footbridge of claim 7, wherein: a cross brace (7) is arranged between the two arch ribs (2).