CN210031492U

CN210031492U - Vertical stop device of carbon fiber rope of middle and small span girder bridge

Info

Publication number: CN210031492U
Application number: CN201920509504.4U
Authority: CN
Inventors: 牟力; 张文居
Original assignee: Sichuan Tibetan Expressway Co Ltd
Current assignee: Sichuan Tibetan Expressway Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-07
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses a carbon fiber rope vertical limiting device of a medium and small span girder bridge, which comprises an anchoring block and a carbon fiber rope, wherein the anchoring block is embedded into the bottom of a girder; the middle part of the carbon fiber rope is fixedly connected with a pier, and two end parts of the carbon fiber rope penetrate through the anchoring blocks and are anchored on the main beam through anchoring bolts, so that the main beam and the pier form an effective tie; when the bridge pier is of a pier cap structure, a reserved hole penetrating along the extension direction of the bridge is formed in the pier cap of the bridge pier, and the carbon fiber rope penetrates through the reserved hole to realize fixed connection with the bridge pier; when the pier is of a bent cap structure, the carbon fiber ropes wind around the lower part of the bent cap and are fixed on the bent cap through the clamping device, so that the pier is fixedly connected with the carbon fiber ropes. The utility model has the performance advantages of matter is light, high strength, high temperature resistant, corrosion-resistant and fatigue-resistant, and simple structure, can prevent effectively that the roof beam body from upwarping, restriction bridge vertical displacement has better roof beam effect of preventing falling, is applicable to various bridge structures, is particularly useful for among the steel beam bridge structure.

Description

Vertical stop device of carbon fiber rope of middle and small span girder bridge

Technical Field

The utility model relates to the technical field, specifically be a vertical stop device of carbon fiber rope of medium and small span girder bridge.

Background

In the past home and abroad earthquake, the bridge structure is often seriously damaged, if the beam upwarps and jumps or even the beam body jumps during strong earthquake, the beam body and the bridge pier can be damaged or even the lifting beam is caused, and in recent years, the earthquake damage generated by the vertical earthquake mainly shows that the lantern-shaped steel bars of the bridge pier are protruded, and the concrete at the bottom of the bridge pier is crushed, the beam falls and the like.

At present, the measure of preventing the beam from falling at home and abroad is to connect an upper-lower structure by adopting a pull rod, a steel bar, a stop block, a limiter and the like at upper joints such as an expansion joint, a hinge, a beam end and the like so as to prolong the supporting length. The stopper of bridge expansion joint department commonly used is mostly the rod iron or chain, and its installation is simple, is an economic reinforcement mode.

However, the steel material is easy to rust and has poor fireproof performance, and corrosion prevention measures are required. And the later maintenance cost of the limiter is higher, and the service performance can not be maintained better.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a carbon fiber rope vertical limiting device for a small and medium span bridge, which has not only a better function of preventing beams from falling, but also a great deal of excellent properties such as high strength and corrosion resistance. The technical scheme is as follows:

a carbon fiber rope vertical limiting device of a medium and small span beam bridge comprises an anchoring block and a carbon fiber rope, wherein the anchoring block is embedded into the bottom of a main beam; the middle part of the carbon fiber rope is fixedly connected with the bridge pier, and the two end parts of the carbon fiber rope penetrate through the anchoring blocks and are anchored on the main beam through the anchoring bolts, so that the main beam and the bridge pier form an effective tie.

Further, the pier is a pier cap structure, a reserved hole which penetrates through the pier cap along the extending direction of the bridge is formed in the pier cap of the pier, and the carbon fiber rope penetrates through the reserved hole to be fixedly connected with the pier.

Furthermore, the pier is of a bent cap structure, the carbon fiber ropes are wound around the lower portion of the bent cap and fixed on the bent cap through the clamping devices, and fixed connection with the pier is achieved.

Furthermore, the carbon fiber ropes are provided with a plurality of carbon fiber ropes, the sections of the carbon fiber ropes are consistent, and the size of the section is determined according to a specific bridge structure.

The beneficial effects of utility model are that: the utility model has the performance advantages of matter is light, high strength, high temperature resistant, corrosion-resistant and fatigue-resistant, and simple structure, can prevent effectively that the roof beam body from upwarping, restriction bridge vertical displacement has better roof beam effect of preventing falling, is applicable to various bridge structures, is particularly useful for among the steel beam bridge structure.

Drawings

Fig. 1 is the utility model discloses the vertical stop device's of carbon fiber rope elevation map of middle and small span girder bridge.

Fig. 2 is the side view pier-pier cap structure of the carbon fiber rope vertical limiting device of the small and medium span girder bridge of the utility model.

Fig. 3 is the side view pier-bent cap structure of the carbon fiber rope vertical limiting device of the small and medium span girder bridge of the utility model.

In the figure: 1-a main beam; 2-an anchoring block; 3-anchoring the bolt; 4-support; 5-carbon fiber ropes; 6-reserving holes; 7-bridge pier; 8-pier coping; 9-a capping beam; 10-fixture.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. As shown in fig. 1, the carbon fiber rope vertical limiting device of a medium-small span beam bridge is positioned at an expansion joint of a certain medium-small span beam bridge and comprises an anchoring block 2 and a carbon fiber rope 5, wherein the anchoring block 2 is embedded into the bottom of a main beam 1; the middle part of the carbon fiber rope 5 is fixedly connected with the pier 7, and the two end parts penetrate into the anchoring blocks 2 and are anchored on the girder 1 through the anchoring bolts 3, so that the girder 1 and the pier 7 form an effective tie.

Example 1: pier 7 is pier cap structure, as shown in fig. 2, is equipped with on the pier cap 8 along the bridge and extends the reservation hole 6 that the direction runs through, carbon fiber rope 5 passes reservation hole 6, realizes the fixed connection with pier 7.

Example 2: the pier 7 is of a capping beam structure, and as shown in fig. 3, the carbon fiber ropes 5 are wound around the lower part of the capping beam 9 and fixed on the capping beam 9 through the fixture 10 to realize fixed connection with the pier 7.

The utility model discloses the vertical displacement of main restriction bridge can be followed perpendicular bridge and set up multichannel carbon fiber rope stop device to can further improve the anti-seismic performance of bridge, reduce the roof beam that falls. The cross-sectional dimension of the carbon fiber rope 5 is calculated according to a specific structure, so that the carbon fiber rope can keep the service performance without being broken under the action of the middle earthquake (exceeding the probability of 10% in 50 years, which is equivalent to 475 years of earthquake recurrence period), and can play a better vertical limiting role under the action of the middle earthquake.

The utility model has the advantages of matter is light, excel in, high temperature resistant, corrosion-resistant and fatigue-resistant, has better limiting displacement, and simple structure, easily change after the shake, the cost is lower, can effectively prevent the roof beam body upwarp, is applicable to the bridge structure system that the requirement for the anti-seismic performance is high.

Claims

1. The carbon fiber rope vertical limiting device of the medium-small span beam bridge is characterized by comprising an anchoring block (2) and a carbon fiber rope (5), wherein the anchoring block (2) is embedded into the bottom of a main beam (1); the middle part of the carbon fiber rope (5) is fixedly connected with the pier (7), and two end parts of the carbon fiber rope penetrate through the anchoring blocks (2) and are anchored on the girder (1) through the anchoring bolts (3), so that the girder (1) and the pier (7) form an effective tie.

2. The carbon fiber rope vertical limiting device for the middle-small span girder bridge according to claim 1, wherein the bridge pier (7) is of a pier cap structure, a reserved hole (6) penetrating through the bridge pier cap (8) in the extending direction of the bridge is formed in the bridge pier cap, and the carbon fiber rope (5) penetrates through the reserved hole (6) to be fixedly connected with the bridge pier (7).

3. The carbon fiber rope vertical limiting device for the middle and small span girder bridge according to claim 1, characterized in that the bridge pier (7) is of a bent cap structure, the carbon fiber rope (5) bypasses the lower part of the bent cap (9) and is fixed on the bent cap (9) through a fixture (10) to realize fixed connection with the bridge pier (7).

4. The carbon fiber rope vertical limiting device for the middle and small span girder bridge according to any one of claims 1 to 3, wherein the carbon fiber rope (5) is provided with a plurality of carbon fiber ropes, the cross sections of the carbon fiber ropes (5) are consistent, and the size of the cross section is determined according to a specific bridge structure.