CN203096603U

CN203096603U - Support structure for bridge with cross slope

Info

Publication number: CN203096603U
Application number: CN 201320028006
Authority: CN
Inventors: 陈增顺; 张承; 周建庭; 宋军; 刘思孟
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2013-01-21
Filing date: 2013-01-21
Publication date: 2013-07-31
Anticipated expiration: 2023-01-21

Abstract

The utility model relates to a bridge building, in particular to a supporting base for a bridge with a cross slope, and particularly relates to a support structure for the bridge with the cross slope. A left leveling pad stone and a right leveling pad stone are cast on a bent cap which is slantly arranged, supports are arranged on the top portions of the leveling pad stones, a leveling steel plate which forms a certain included angle with a hollow plate is installed below a bridge main beam, the lower surface of the leveling steel plate is horizontal, and the leveling steel plate is supported by the supports. The support structure for the bridge with the cross slope has the advantages of being good in effect, reasonable in stress and the like, can not generate unfavorable transverse force, conforms to code requirements, conducts changing on an old support, and has the advantages of being convenient and rapid and saving cost.

Description

A kind of band horizontal wall inscription bridge pad structure

Technical field

The utility model relates to bridge construction, particularly with the supporting seat of horizontal wall inscription bridge, is specially a kind of band horizontal wall inscription bridge pad structure.

Background technology

The bridge main beam, bearing, pinner and the bent cap that have horizontal wall inscription are tilting with the identical gradient, and disadvantageous transverse shear deformation has taken place under unfavorable lateral force effect bearing, and the position of girder is moved.Girder moves back extruding block, and block can't bear this lateral force for a long time, will cause block to destroy even the beam that falls; The shear strain of bearing long term lateral will influence the suitable bridge of bearing to normal deformation, and it is normally stressed to influence bridge, makes bridge have bigger potential safety hazard.Therefore must solve the support problem of band horizontal wall inscription bridge.

Summary of the invention

The utility model designs a kind of supporting seat of safety and firmness more at the stressed problem of support of band horizontal wall inscription bridge.

Design scheme of the present utility model is as follows: a kind of band horizontal wall inscription bridge pad structure, two leveling pinners about building on the tilting bent cap, leveling pinner top is provided with bearing, the leveling steel plate that forms an angle with hollowcore slab is installed below bridge main beam, leveling steel plate soffit is a level, and the leveling steel plate is accepted support by bearing.

Described leveling pinner is set to trapezoidal, and the upper surface that guarantees the leveling pinner on tilting bent cap inclined-plane is a level.

There is difference in height in described left and right two pinners.

The utlity model has good, the stressed advantage such as rationally of effect, can not produce unfavorable lateral force, the compliant requirement.

Description of drawings

Fig. 1 is the utility model bridge pad structural representation;

Fig. 2 is a normal tape horizontal wall inscription bridge pad structural representation;

Fig. 3 is a sectional schematic diagram after the jacking of beam body;

Fig. 4 is a beam body jacking floor map;

Fig. 5 is for changing rear support lateral arrangement figure;

Fig. 6 is for changing the vertical arrangement diagram of rear support;

Wherein 1---hollowcore slab, 2---the leveling steel plate, 3---bearing, 4---the leveling pinner, 5---tilting bent cap, 6---interim support 7---billet, 8---jack.

The specific embodiment

The utility model is described in further detail below in conjunction with specific embodiment and Figure of description.Specific embodiment described herein is only in order to explaining the utility model, and is not used in qualification the utility model.

Embodiment 1: a kind of band horizontal wall inscription bridge pad structure, as shown in Figure 1, on tilting bent cap, build left and right two leveling pinners with difference in height, and difference in height is according to the gradient setting of bridge, and guarantees that the upper surface of two leveling pinners is a level.At leveling pinner top bearing is set, the wedge shape leveling steel plate that forms an angle with bridge hollow board is installed below bridge main beam, guarantee that leveling steel plate soffit is a level, the leveling steel plate is accepted support by bearing.

Can be by this set so that bearing satisfy code requirement, the upper and lower surface level.The bearing place can not produce unfavorable lateral force when vertical forces such as deadweight, automobile were passed to bearing.

Embodiment 2: normal tape horizontal wall inscription bridge pad in the past, its structure as shown in Figure 2, the shear strain of bearing long term lateral will influence bearing along bridge to normal deformation, it is normally stressed to influence bridge.Structure according to embodiment 1 is changed it.

The scheme of bearing replacement and flow process:

Arrange a plurality of small-sized jack on bent cap, jacking 5mm(does not destroy the beam body, but uninterrupted traffic), the pinner surface by being set, prefabricated wedge is transferred to level, and the girder support position is provided with leveling steel plate or wedge leveling.Concrete construction process is as follows:

(1) lay jack, pre-jacking is to eliminate the nonelastic deformation or the sedimentation of support itself.Can stop at the complete jacking time-out of girder, and park a few hours and observe, begin integral jacking again after stablizing.

(2) as shown in Figure 3, Figure 4, synchronously slow jacking 5mm adopts the auxiliary control of displacement simultaneously, and jacking limit, limit is provided with interim support.Leveling is handled pinner and is changed bearing then, and the old bearing of dismantling more renews bearing.Bearing pad stone elevation of top surface allowable error is no more than ± 2mm, and four jiaos of discrepancy in elevation of end face are no more than 1mm, and the axis off normal is no more than 5mm.

(3) leveling steel plate at the bottom of the stickup beam is changed rear support such as Fig. 5, shown in Figure 6.

(4) falling beam body, transfer equipment are changed down and three are striden.

Adopt above-mentioned steps that old bearing is changed, have advantage convenient, fast, that save cost; Set up the support jacking and carry out the bearing replacement scheme and compare with traditional, the duration shortens greatly, and cost reduces greatly; Can realize having the bearing replacement of horizontal wall inscription bridge smoothly, and slowly jacking 5mm does not need to destroy the beam body, but uninterrupted traffic.

Claims

1. band horizontal wall inscription bridge pad structure, it is characterized in that: two leveling pinners about building on the tilting bent cap, leveling pinner top is provided with bearing, and the leveling steel plate that becomes angle with hollowcore slab is installed below bridge main beam, leveling steel plate soffit is a level, and the leveling steel plate is accepted support by bearing.

2. a kind of band horizontal wall inscription bridge pad structure according to claim 1, it is characterized in that: described leveling pinner is set to trapezoidal, and the upper surface that guarantees the leveling pinner on tilting bent cap inclined-plane is a level.

3. a kind of band horizontal wall inscription bridge pad structure according to claim 1 is characterized in that: there is difference in height in described left and right two pinners.