CN217127987U

CN217127987U - Novel bridge is flexible device

Info

Publication number: CN217127987U
Application number: CN202220876283.6U
Authority: CN
Inventors: 张保忠; 张文良; 袁松; 张洋; 郑娟
Original assignee: Hebei Hengyang Engineering Equipment Co ltd
Current assignee: Hebei Hengyang Engineering Equipment Co ltd
Priority date: 2022-04-16
Filing date: 2022-04-16
Publication date: 2022-08-05
Anticipated expiration: 2032-04-16

Abstract

The utility model belongs to the technical field of the expansion joint, specific saying relates to a novel bridge is flexible device. Its structure includes first fishback and second fishback that the socket joint is connected, and the two is installed respectively in the mounting groove of expansion joint both sides through respective anchor subassembly, its characterized in that: the anchor subassembly is including setting up respectively a plurality of groups anchor riser in first fishback and second fishback lower part, anchor riser front end forms the support cantilever in the expansion joint region, anchor riser rear end has the through-hole that supplies to cross reinforcing bar and/or pre-buried reinforcing bar to run through in the mounting groove region. This novel bridge telescoping device's anchor backup pad has the effect that cantilever supported and anchor were fixed a position concurrently, and the telescoping device atress condition is good, non-deformable, has that encapsulation degree is high, the installation location is firm, uses the characteristics that the durability is good, non-maintaining.

Description

Novel bridge is flexible device

Technical Field

The utility model belongs to the technical field of the expansion joint, specific saying relates to a novel bridge is flexible device.

Background

In order to meet the requirement of bridge deck deformation, expansion joints are usually provided between two beam ends, between a beam end and an abutment, or at the hinge joint of a bridge. The expansion joint can freely expand and contract in two directions parallel to and perpendicular to the axis of the bridge, and is firm and reliable, when a vehicle runs, the vehicle is smooth without sudden jump and noise, rainwater and garbage soil are prevented from permeating into the expansion joint to block the expansion joint, and the installation, the inspection, the maintenance and the repair of the expansion joint are simple and convenient. The comb-tooth-shaped expansion joint is applied generally in bridge engineering, can effectively adjust displacement and connection between upper structures caused by vehicle load and bridge building materials, and plays an important role in speed, comfort and safety of bridge traffic.

In the using process, as the plane size of the bridge is too long, the expansion and contraction effect can cause overlarge temperature stress in the bridge structure and damage to the bridge structure easily, so the comb tooth expansion joints need to be arranged at intervals to divide the whole bridge upper structure into a plurality of parts along the longitudinal direction and form through structure cracks along the transverse direction of the bridge, the comb teeth at the front end of the traditional comb plate expansion joint device are in cantilever type to bear the driving load due to the socket and expansion of the comb teeth, the vehicle can generate large deformation when passing through the device, the comb metal fatigue and the warping are caused for a long time to hinder the driving safety, and the comb plate is connected with components such as a lower anchoring plate, a positioning plate and the like through welding or bolts, the welding seams or the bolts bear complicated all-directional pressure stress, the expansion joints are easy to crack or loosen, and further cause the deformation and even the falling of the comb plate, thereby causing the damage of the expansion joint device, the use safety of the bridge is influenced; secondly, the fishback moves along with the expansion joint synchronous motion, and the clearance of formation concertina movement between broach and the slot, ponding on the bridge floor, grit debris fall into the expansion joint in, pile up on the waterproof board, cause the damage to the waterproof board, also be convenient for not overhaul the clearance, the siltation is too much to cause the flexible accident of being restricted, bridge telescoping device destruction even.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a have cantilever support and anchor location concurrently, the bridge telescoping device that the atress condition is good, non-deformable has that encapsulation degree is high, the installation location is firm, uses the characteristics that the durability is good, non-maintaining.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a novel bridge telescoping device, includes first fishback and the second fishback that the socket joint is connected, and the two is installed respectively in the mounting groove of expansion joint both sides through respective anchor subassembly, its characterized in that: the anchor subassembly is including setting up respectively a plurality of groups anchor riser in first fishback and second fishback lower part, anchor riser front end forms the support cantilever in the expansion joint region, anchor riser rear end has the through-hole that supplies to cross reinforcing bar and/or pre-buried reinforcing bar to run through in the mounting groove region.

The additional technical characteristics of the novel bridge expansion device further comprise that:

positioning guard plates with L-shaped sections are symmetrically arranged on two sides of the expansion joint, the bottom edges of the positioning guard plates are located at the bottoms of the anchoring vertical plates, and vertical grooves for the anchoring vertical plates to insert are formed in the vertical edges of the positioning guard plates;

the lower parts of the first comb plate and the second comb plate are provided with a plurality of inserting and pulling units which move synchronously with the comb teeth in a socket joint mode, the anchoring vertical plates are located on two sides of the inserting and pulling units, each inserting and pulling unit comprises an inserting plate and a pulling box which are respectively located on the lower parts of the comb teeth and the tooth seams, and the vertical edges of the positioning protection plates are provided with notches which are used for clamping the pulling boxes between the adjacent vertical grooves; the inserting plates are attached to the bottom surfaces of the comb teeth, the drawing box is installed at the bottom of the tooth gap corresponding to the comb teeth, and the front ends of the inserting plates are arranged in the oral cavity at the side part of the drawing box and provided with redundant telescopic spaces;

the inserting plate is welded and fixed with the bottom surfaces of the comb teeth, and the two sides of the drawing box are provided with the ear rings which are connected with the first comb plate or the second comb plate through bolts or rivets;

a water stop is arranged in the expansion joint, the side edge of the water stop is positioned at the lower part of the bottom edge of the positioning protection plate, and the water stop is a stainless steel water stop and is provided with a coating turnover at the side edge.

Compared with the prior art, the utility model provides a novel bridge is flexible device has following advantage: because the anchoring assembly of the expansion device comprises a plurality of groups of anchoring vertical plates which are respectively arranged at the lower parts of the first comb plate and the second comb plate, the front ends of the anchoring vertical plates form supporting cantilevers in the expansion joint area, and the rear ends of the anchoring vertical plates are provided with through holes for penetrating through transverse reinforcing steel bars and/or embedded reinforcing steel bars in the mounting groove area, compared with the traditional comb expansion device without the supporting cantilevers, the supporting cantilevers of the anchoring vertical plates hardly generate vertical deformation when the rigid supports are stressed, so that the comb plates are prevented from generating deformation; the fixed welding seam of the comb plate and the anchoring vertical plate basically only bears vertical pressure and horizontal tension, the stress condition is good, and the comb plate is basically not cracked; moreover, the expansion joint device has few stress components and short transmission path, is sensitive to load reaction, and reduces the failure probability of the expansion joint device; moreover, this novel anchor structure has cantilever support and subassembly locate function concurrently, and the overall arrangement is compact, and whole equipment degree is high, and it is convenient to process manufacturing, is convenient for reform transform the upgrading to current fishback, with telescoping device simultaneous movement, has improved whole encapsulation degree, does benefit to the modularization processing, and it is firm to install the location, moves the safety and stability, can show extension telescoping device's life, has that the practicality is strong, economic benefits is good and outstanding market spreading value.

Drawings

Fig. 1 is a schematic structural view of a novel bridge expansion device of the present invention;

fig. 2 is a partial perspective view (broken line cross section) of the telescopic device.

Detailed Description

The structure and the working principle of the novel bridge expansion device provided by the invention are further described in detail with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, the structure of the novel bridge expansion device provided by the present invention is schematically illustrated. The structure that constitutes this novel bridge telescoping device includes first fishback 11 and the second fishback 12 of socket joint connection, and the two is installed respectively in the mounting groove A of expansion joint both sides through respective anchor subassembly, and the anchor subassembly is including setting up a plurality of groups anchor riser 21 in first fishback 11 and second fishback 12 lower parts respectively, and anchor riser 21 front end forms in the expansion joint region and supports cantilever 21a, and anchor riser 21 rear end has the through-hole 21b that supplies to cross reinforcing bar and/or embedded bar 21c and run through in mounting groove A region.

The working principle is as follows: first fishback 11 and second fishback 12 of this telescoping device are through respective anchor unit mount in the mounting groove A at the expansion joint, because anchor riser 21 of anchor unit is vertical state and sets up the lower part at the fishback side by side, its front end forms support cantilever 21a in the expansion joint region, the supporting role to the fishback has been reinforceed, and the shock resistance is improved, prevent that broach socket and spigot joint in-process from taking place deformation, its rear end has the through-hole 21b that supplies to cross reinforcing bar and/or pre-buried reinforcing bar 21c and run through in mounting groove A region, the anchoring degree with concrete foundation structure has been reinforceed, the vertical pressure and the horizontal impact that bear can in time disperse, the durability of telescoping device has been improved.

It should be noted that the rear end of the anchor vertical plate 21 is connected with the transverse steel bars and/or the embedded steel bars 21c in the installation groove a region through the through holes 21b, the embedded steel bars 21c in the installation groove a have various forms, such as J-shaped, rectangular, etc., and the connection mode with the through holes 21b also has various forms, such as vertical binding, horizontal penetration, etc., and forms a three-dimensional penetrating connection mode with the anchor vertical plate 21, so that the structural strength is high, and after concrete is poured, the anchoring performance of the telescopic device is better;

in the structure of the novel bridge expansion device,

in order to further improve the structural stability of the anchoring vertical plate, positioning protection plates 22 with L-shaped cross sections are symmetrically arranged on two sides of the expansion joint, a bottom edge 22a of each positioning protection plate 22 is located at the bottom of the anchoring vertical plate 21, and a vertical groove 22c for inserting the anchoring vertical plate 21 is formed in a vertical edge 22b of each positioning protection plate 22;

when a vehicle passes through the comb plate on one side, downward pressure and horizontal impact force can be applied to the vehicle, the downward pressure and the horizontal impact force are transmitted to the concrete structure of the installation groove A through the rear end anchoring section of the anchoring vertical plate 21 (the through hole of the anchoring vertical plate in the installation groove area is in through connection with the transverse steel bar and/or the embedded steel bar) and the bottom edge 22a of the positioning protection plate 22, when the vehicle crosses the positioning protection plate 22, the vehicle enters the comb tooth socket area, at the moment, the comb teeth and the supporting cantilever 21a of the anchoring vertical plate start to bear force, and because of the rigid support of the vertical anchoring vertical plate 21, the force borne by the comb teeth is transmitted to the anchoring vertical plate (the supporting cantilever 21 a), the comb teeth hardly deform and almost only bear the pressure and the horizontal force, so that the welding seam between the comb plate and the anchoring vertical plate 21 only bears the two forces, the welding seam stress condition is good, cracks are not easy to generate, the conditions of open welding and the like, the deformation of the comb teeth and the falling of the comb plate is avoided, therefore, the service life of the expansion joint and the driving comfort are improved, a part of the stress of the anchoring vertical plate 21 is transmitted to the structure of the bridge through the second-stage reinforced concrete, and a part of the stress is transmitted to the structure of the bridge through the bottom edge 22a of the positioning guard plate 22 in a dispersing way, so that the pressure intensity borne by the edge structure of the bridge is reduced, the weak part of the bridge is prevented from being damaged, the service life of the expansion joint device is prolonged, and the later-stage maintenance and replacement are reduced;

preferably, a plurality of inserting and withdrawing units which move synchronously with the sockets of the comb teeth are arranged at the lower parts of the first comb plate 11 and the second comb plate 12, the anchoring vertical plates 21 are positioned at two sides of the inserting and withdrawing units, each inserting and withdrawing unit comprises an inserting plate 31 and a drawer 32 which are respectively arranged at the lower parts of the comb teeth 13 and the tooth gaps 14, and the vertical edges 22b of the positioning protection plates 22 are provided with notches 22d which are used for clamping the drawer 32 between the adjacent vertical grooves 22 c; wherein, the inserting plate 31 is attached to the bottom surface of the comb teeth 13, the drawing box 32 is arranged at the bottom of the tooth gap 14 corresponding to the comb teeth 13, and the front end of the inserting plate 31 is arranged in the oral cavity at the side part of the drawing box 32 and has a redundant telescopic space;

that is, in the telescopic motion of the comb teeth 13 and the tooth gaps 14 which are connected in a socket joint manner, the drawing and inserting unit at the lower part of the comb teeth moves synchronously, the inserting plate 31 positioned below the comb teeth 13 moves in a drawing box 32 positioned below the tooth gaps 14 in a telescopic manner, gaps among the comb teeth are sealed by the inserting plate 31, an anchoring assembly and a waterproof assembly of the expansion joint are protected from being eroded by natural environments such as sunlight, rain and the like, meanwhile, flowing water, sand stones and the like of a bridge floor temporarily fall on the inserting plate below the comb teeth, and can be discharged out of the gaps among the comb teeth by means of external force vibration along with the natural motion of the expansion joint, the expansion gap among the comb teeth is always kept clean and tidy, the closed structure is also beneficial to protecting the waterproof belt from being damaged by people, the maintenance cost and the security cost are also obviously reduced, and the durability of the equipment is improved;

meanwhile, the positioning guard plate 22 can quickly position the anchoring vertical plate 21 and the drawer 32 through the vertical groove 22c and the notch 22d, so that the production and the processing are convenient, the assembly efficiency is improved, the integral modularization degree is improved, all parts of the expansion device are connected more tightly and firmly, the structural form of integral welding forming and socket assembling avoids the problem of infirm assembly caused by different screwing moments in a bolt anchoring mode, the conditions of car jumping, abnormal sound and the like caused by deformation of the comb plate due to loosening of bolts after the expansion joint is rolled and vibrated by a vehicle for a long time are avoided, and the safety and the durability of the expansion device are ensured; the section of the concrete expansion joint is L-shaped, the vertical edge 22b steel plate plays a role of an end head template, and the horizontal bottom edge 22a steel plate disperses the concentrated travelling crane load borne by the expansion joint into the concrete structure, so that the pressure borne by the concrete structure is reduced, the post-cast concrete in the installation groove can be effectively coated, the weak edge of the concrete is prevented from being damaged, and the service life of the foundation structure is prolonged;

specifically, the inserting plate 31 is welded and fixed to the bottom surface of the comb teeth 13, preferably, the inserting plate 31 is welded to the front end of the comb teeth 13, the length of the inserting plate covers at least the maximum movement width of the entire expansion joint, the width of the inserting plate is equal to the width of the comb teeth 13, the two sides of the drawing box 32 are provided with the ear rings 321, and the ear rings 321 are connected with the first comb tooth 13 plate 11 or the second comb tooth 13 plate 12 through bolts or rivets, so that the stability of the drawing box 32 is improved, the inserting plate 31 is ensured to be smoothly stretched, and the movement positioning is regular; (ii) a

In one embodiment, the water stop 4 is arranged in the expansion joint, the side edge of the water stop 4 is positioned at the lower part of the bottom edge 22a of the positioning protection plate 22 and is preferably fixed through bonding so as to enhance the sealing and waterproof performance and prevent the flowing water from permeating, the water stop 22 is a stainless steel water stop, the side edge of the stainless steel water stop is provided with a wrapping turnover, the cross section of the stainless steel water stop is preferably in a U shape and has a certain expansion variable, meanwhile, the side edge of the stainless steel water stop is positioned at the lower part of the bottom edge of the positioning protection plate 22 and is fastened through the wrapping turnover, the connection is tight and firm, the service life and the waterproof effect are prolonged, and the later maintenance and replacement are avoided.

Claims

1. The utility model provides a novel bridge telescoping device, includes first fishback and the second fishback that the socket joint is connected, and the two is installed respectively in the mounting groove of expansion joint both sides through respective anchor subassembly, its characterized in that: the anchor subassembly is including setting up respectively a plurality of groups anchor riser in first fishback and second fishback lower part, anchor riser front end forms the support cantilever in the expansion joint region, anchor riser rear end has the through-hole that supplies to cross reinforcing bar and/or pre-buried reinforcing bar to run through in the mounting groove region.

2. The novel bridge expansion device of claim 1, wherein: positioning guard plates with L-shaped sections are symmetrically arranged on two sides of the expansion joint, the bottom edges of the positioning guard plates are located at the bottoms of the anchoring vertical plates, and vertical grooves for the anchoring vertical plates to insert are formed in the vertical edges of the positioning guard plates.

3. The novel bridge expansion device of claim 2, wherein: the lower parts of the first comb plate and the second comb plate are provided with a plurality of plugging units which move synchronously with the socket joint of the comb teeth, the anchoring vertical plates are positioned at two sides of the plugging units, each plugging unit comprises a plug plate and a drawer at the lower parts of the comb teeth and the tooth seams, and the vertical edges of the positioning protective plates are provided with notches for clamping the drawer between the adjacent vertical grooves; the inserting plate is attached to the bottom surface of the comb teeth, the drawing box is installed at the bottom of the tooth gaps corresponding to the comb teeth, and the front end of the inserting plate is arranged in the oral cavity of the side portion of the drawing box and provided with a redundant telescopic space.

4. The novel bridge expansion device of claim 3, wherein: the picture peg with the bottom surface welded fastening of broach, take out casket both sides and set up the earrings, the earrings pass through bolt or rivet with first fishback or second fishback are connected.

5. The novel bridge expansion device of claim 2, wherein: a water stop is arranged in the expansion joint, the side edge of the water stop is positioned at the lower part of the bottom edge of the positioning protection plate, the water stop is a stainless steel water stop, and the side edge of the water stop is provided with a coating turnover.