CN213571519U

CN213571519U - Bridge beam supports who transversely resists toppling

Info

Publication number: CN213571519U
Application number: CN202022239261.2U
Authority: CN
Inventors: 张洪涛; 王祥; 邵银秀; 赵文浩; 王庆龙; 徐东云; 宋昱良; 梁雨露; 杨伟
Original assignee: Fifth Engineering Co Ltd of CTCE Group
Current assignee: Fifth Engineering Co Ltd of CTCE Group
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-29
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a bridge beam supports of horizontal antidumping, include: the device comprises a cushion stone, a lower supporting seat, a sliding plate type rubber support and an upper supporting seat; the lower supporting seat comprises a lower steel plate and two slots symmetrically arranged on the top surface of the lower steel plate, and the lower steel plate is fixed on the pad through bolts; the upper supporting seat comprises an upper steel plate and two upright columns symmetrically arranged on the bottom surface of the upper steel plate, the two upright columns of the upper supporting seat are correspondingly inserted into the two slots of the lower supporting seat, and a friction pair is arranged at the contact part of the upright columns and the bottoms of the slots; the sliding plate type rubber support is arranged between the lower support seat and the upper support seat and is positioned in a space enclosed by the upper steel plate, the lower steel plate and the two slots, the sliding plate type rubber support comprises a polytetrafluoroethylene plate and a plate type rubber support, the plate type rubber support is fixed on the lower steel plate, the polytetrafluoroethylene plate is fixed at the top of the plate type rubber support, and the upper steel plate is lapped on the polytetrafluoroethylene plate; a plurality of screw rods are welded on the upper steel plate, and the upper supporting seat is connected with the upper beam body through the screw rods.

Description

Bridge beam supports who transversely resists toppling

Technical Field

The utility model belongs to the technical field of structural engineering, a bridge beam supports of horizontal antidumping is related to.

Background

In the bridge structure, the support is a connection point of an upper structure and a lower structure of the bridge, and has the functions of comfortably and safely transmitting the load of the upper structure to the bridge abutment and simultaneously ensuring the free deformation of the upper structure under the action of factors such as load, temperature change, concrete shrinkage and the like so as to ensure that the structure conforms to the actual stress condition and protect the beam end and the abutment cap from being damaged.

However, most of the existing supports are plate-type and basin-type rubber supports, the bridge deck system is directly placed on the supports, the supports cannot restrain the vertical displacement of the bridge deck system, when the bridge bears large unbalance loading, the bridge deck system is likely to generate overturning risks due to large torque, and therefore a novel bridge support is needed at present, so that the stress characteristic of a bridge structure can be met, and the bridge can be further prevented from transversely overturning.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model aims at providing a horizontal antidumping bridge beam supports goes up and pegs graft through stand and slot cooperation between supporting seat and under bracing seat to set up the friction pair in grafting department, in order to restrict the translation rate of supporting seat in the slot, utilize the characteristic of the roof beam that sliding plate formula rubber support can eliminate the bridge and the stress between the pier, greatly strengthened the antidumping nature of bridge.

The utility model discloses a bridge beam supports of horizontal antidumping, include: the device comprises a cushion stone, a lower supporting seat, a sliding plate type rubber support and an upper supporting seat; the lower supporting seat comprises a lower steel plate and two slots symmetrically arranged on the top surface of the lower steel plate, and the lower steel plate is fixed on the pad through bolts; the upper supporting seat comprises an upper steel plate and two upright columns symmetrically arranged on the bottom surface of the upper steel plate, the two upright columns of the upper supporting seat are correspondingly inserted into the two slots of the lower supporting seat, and a friction pair is arranged at the contact part of the upright columns and the bottoms of the slots; the sliding plate type rubber support is arranged between the lower support seat and the upper support seat and is positioned in a space enclosed by the upper steel plate, the lower steel plate and the two slots, the sliding plate type rubber support comprises a polytetrafluoroethylene plate and a plate type rubber support, the plate type rubber support is fixed on the lower steel plate, the polytetrafluoroethylene plate is fixed at the top of the plate type rubber support, and the upper steel plate is overlapped on the polytetrafluoroethylene plate; go up the welding of steel sheet and have many screws, go up the support holder and pass through screw rod and upper portion roof beam body coupling.

The utility model discloses an among the bridge beam supports of horizontal antidumping, the underrun epoxy of going up the steel sheet bonds the corrosion resistant plate that thickness is 2 mm.

The utility model discloses an among the bridge beam supports of horizontal antidumping, slab rubber support is formed by multilayer steel sheet and the alternative pressurization vulcanization bonding of rubber slab.

The utility model discloses an among the bridge beam supports of horizontal antidumping, the outside parcel of slide plate formula rubber support has synthetic leather or high-quality varnished cloth.

In the transverse anti-overturning bridge bearing of the utility model, the friction pair is a tungsten carbide plate.

The utility model discloses an among the bridge beam supports of horizontal antidumping, the outside parcel of screw rod has elastic material, the screw rod passes to reserve behind the through-hole on the upper portion roof beam body and will go up supporting seat and upper portion roof beam body coupling fixed with the nut cooperation.

The utility model discloses an among the bridge beam supports of horizontal antidumping, the through-hole is the shoulder hole, the nut imbeds in the shoulder hole.

The utility model discloses an among the bridge beam supports of horizontal antidumping, all steel member surfaces of bridge beam supports have all covered the anti rust coating.

The utility model discloses a bridge beam supports of horizontal antidumping, the lower steel sheet top surface of under bracing seat is equipped with two slots, and the last steel sheet bottom surface of going up the supporting seat is equipped with two stands, and two stands correspond when bridge beam supports installs and insert two slots in, still are equipped with the friction pair bottom the slot. When the bridge bears a large unbalance loading effect, when the upper supporting seat moves relatively in the slot, a part of force can be released, so that the deformation degree of the bridge is reduced; and the characteristic that horizontal displacement is not limited when the upper supporting seat freely slides on the surface of the polytetrafluoroethylene plate is combined to improve the anti-overturning property of the bridge.

Drawings

Fig. 1 is a cross-sectional view of a transverse anti-overturning bridge bearing of the present invention.

Detailed Description

As shown in fig. 1, the utility model discloses a bridge beam supports of horizontal antidumping, include: the support comprises a cushion stone 1, a lower support seat, a sliding plate type rubber support and an upper support seat. The lower supporting seat comprises a lower steel plate 2 and two slots 4 symmetrically arranged on the top surface of the lower steel plate, and the lower steel plate 2 is fixed on the cushion stone 1 through bolts 3. The elevation of the top surface of the cushion stone 1 needs to be strictly controlled, the elevation error is-5-0 mm, the height difference of four corners of the same cushion stone 1 is not more than 2mm, and the height difference of each cushion stone on the pier top is not more than 3 mm. Go up the supporting seat and include steel sheet 8 and two stands 7 that the symmetry set up at last steel sheet 8 bottom surface, go up two stands 7 of supporting seat and correspond in two slots 4 that insert the lower carriage, and be equipped with the friction pair 5 in the contact department of stand 7 and slot bottom. Sliding plate rubber support sets up between lower carriage and last supporting seat, is located the space that steel sheet 8, lower steel sheet 2 and two slots 4 enclose, sliding plate rubber support includes polytetrafluoroethylene board 13 and plate rubber support 6, plate rubber support 6 is fixed under on steel sheet 2, and polytetrafluoroethylene board 13 fixes at the top of plate rubber support 6, it sets up on polytetrafluoroethylene board 13 to go up steel sheet 8. Go up the welding of steel sheet 8 and have many screws 11, go up the support holder and pass through screw 11 and upper portion roof beam body 9 and connect. During specific implementation, the outer portion of the screw rod 11 is wrapped by the elastic material 10, and the screw rod 11 penetrates through a through hole reserved in the upper beam body 9 and then is matched with the screw cap 12 to fixedly connect the upper supporting seat with the upper beam body. The through hole is a stepped hole, and the nut 12 is embedded in the stepped hole.

In specific implementation, the bottom surface of the upper steel plate 8 is bonded with a stainless steel plate with the thickness of 2mm through epoxy resin. The friction coefficient is very little during relative motion between polytetrafluoroethylene and the stainless steel, lets go up the support seat and make a round trip to slide on polytetrafluoroethylene board 13 to realize the horizontal displacement of upper portion roof beam body, with the partial power of release, thereby reduce the deformation degree of bridge.

During specific implementation, the bridge support is mainly installed through bolts, so that the positions of bolt holes are reserved for the pier top cushion stones 1, the depth of the bolt holes is retested, and the accurate positions of the bolt holes are guaranteed. According to technical conditions for temporary high-performance concrete in passenger dedicated lines, the reserved diameter of a bolt hole is determined to be the diameter of the bolt plus 60mm, the depth is the length of the bolt plus 50mm, the position deviation of the center and the diagonal of the reserved bolt hole is not more than 10mm, and a total station is adopted to measure and draw a support cross line so as to facilitate the installation of the bridge support.

During specific implementation, a gap of 20-30 mm needs to be reserved between the lower steel plate 2 of the lower supporting seat and the pad stone 1, and a non-shrinkage high-strength grouting material is adopted for pouring.

In specific implementation, the plate-type rubber support 6 is formed by alternately pressurizing, vulcanizing and bonding a plurality of layers of steel plates and rubber plates. The sliding plate type rubber support is externally wrapped with artificial leather or high-quality varnished cloth.

During specific implementation, in order to guarantee the long service life of the bridge bearing, the friction pairs adopted in the slots 4 are all made of tungsten carbide materials, and specifically can support tungsten carbide plates which are fixed at the bottoms of the slots 4 in a welding mode. The tungsten carbide material has good wear resistance, and can reduce the abrasion when the parts in contact with the tungsten carbide material slide relatively.

In specific implementation, all steel component surfaces of the bridge support are coated with antirust coatings.

The utility model discloses a construction process of horizontal antidumping bridge beam supports as follows:

step 1: supporting a cushion stone, wherein before a bridge support is installed, the cushion stone of a bridge pier column is constructed, the concrete strength of the cushion stone is not lower than C50, the height of the cushion stone is required to be considered for installation, maintenance and convenience for replacing the support when necessary, the elevation of the top surface of the cushion stone is strictly controlled, the elevation error is-5-0 mm, the height difference of four corners of the same cushion stone is not more than 2mm, and the height difference of each cushion stone on the pier top is not more than 3 mm;

step 2: before the bridge support is installed, roughening the surface of a pad stone on the top of a pier, and removing impurities on the surface of the pad stone and in a reserved bolt hole;

and step 3: fixing a lower steel plate 2 in a reserved bolt hole of a cushion stone 1 through a bolt 3, reserving a gap of 20-30 mm between the bottom surface of the lower steel plate 2 and a supporting cushion stone, and grouting by adopting a gravity grouting mode until the peripheral gap of the lower steel plate 2 is completely filled;

and 4, step 4: uniformly smearing epoxy resin mortar on the surface of the lower steel plate 2, and sticking the sliding plate type rubber support to the lower steel plate 2;

and 5: arranging a friction pair 5 in a slot 4 of a lower supporting seat, correspondingly inserting two upright posts 7 of an upper supporting seat into the two slots 4 of the lower supporting seat, and simultaneously placing an upper steel plate 8 on a polytetrafluoroethylene plate 13 of a sliding plate type rubber support;

step 6: after the support is installed, connecting a hole reserved in the upper beam body with a screw of the upper steel plate, and arranging an elastic material outside the screw;

and 7: the nut is mechanically connected to the screw by a thread.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the spirit of the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lateral anti-overturning bridge bolster, comprising: the device comprises a cushion stone, a lower supporting seat, a sliding plate type rubber support and an upper supporting seat; the lower supporting seat comprises a lower steel plate and two slots symmetrically arranged on the top surface of the lower steel plate, and the lower steel plate is fixed on the pad through bolts; the upper supporting seat comprises an upper steel plate and two upright columns symmetrically arranged on the bottom surface of the upper steel plate, the two upright columns of the upper supporting seat are correspondingly inserted into the two slots of the lower supporting seat, and a friction pair is arranged at the contact part of the upright columns and the bottoms of the slots; the sliding plate type rubber support is arranged between the lower support seat and the upper support seat and is positioned in a space enclosed by the upper steel plate, the lower steel plate and the two slots, the sliding plate type rubber support comprises a polytetrafluoroethylene plate and a plate type rubber support, the plate type rubber support is fixed on the lower steel plate, the polytetrafluoroethylene plate is fixed at the top of the plate type rubber support, and the upper steel plate is overlapped on the polytetrafluoroethylene plate; go up the welding of steel sheet and have many screws, go up the support holder and pass through screw rod and upper portion roof beam body coupling.

2. The bridge brace of claim 1, wherein the bottom surface of the upper steel plate is bonded to a stainless steel plate having a thickness of 2mm by epoxy.

3. The bridge bearing of claim 1, wherein the slab rubber bearing is formed by alternately press-vulcanizing and bonding a plurality of steel plates and rubber plates.

4. The bridge bearer according to claim 1, wherein the sliding plate type rubber bearer is externally wrapped with artificial leather or high-quality varnished cloth.

5. The bridge bearer of claim 1, wherein the friction pair is a tungsten carbide plate.

6. The bridge bearer according to claim 1, wherein the screw is externally wrapped with an elastic material, and the screw passes through a through hole reserved on the upper beam body and then cooperates with the nut to connect and fix the upper bearer and the upper beam body.

7. The bridge bearer of claim 6, wherein the through hole is a stepped hole and the nut is inserted into the stepped hole.

8. A transverse anti-overturning bridge support according to claim 1, wherein all steel member surfaces of the bridge support are coated with a rust-proof coating.