阅读说明：本技术 一种用于消除桥头跳车的过渡装置及桥头过渡结构 (Transition device for eliminating bump at bridge head and bridge head transition structure ) 是由 尚廷东 邵景干 吴跟上 王俊超 黄运军 张普 吴振全 于 2019-11-04 设计创作，主要内容包括：本发明涉及一种用于消除桥头跳车的过渡装置及桥头过渡结构,过渡装置包括左端邻近桥梁方向设置的过渡支撑板,过渡支撑板的左端下侧设置有第一支撑,过渡支撑板的下侧于第一支撑的右侧设置有第二支撑,过渡支撑板由位置靠左的第一支撑板段和位于第一支撑板段右侧的第二支撑板段构成,第二支撑板段的刚度由左至右逐渐降低,第一支撑板段的刚度不小于第二支撑板段的刚度。本发明解决了现有技术中车辆在经过桥面、路面时,因刚度突变而容易造成桥头跳车的技术问题。(The invention relates to a transition device for eliminating bump at the bridge head and a bridge head transition structure, wherein the transition device comprises a transition support plate, the left end of the transition support plate is arranged in the direction close to a bridge, a first support is arranged at the lower side of the left end of the transition support plate, a second support is arranged at the lower side of the transition support plate and positioned on the right side of the first support, the transition support plate is composed of a first support plate section and a second support plate section, the first support plate section is close to the left, the second support plate section is positioned on the right side of the first support plate section, the rigidity of the second support plate section is gradually reduced from the left to the right, and the rigidity of the first support plate. The invention solves the technical problem that the vehicle is easy to jump at the bridge head due to the sudden change of rigidity when passing through a bridge floor and a road surface in the prior art.)

1. The utility model provides a transition device for eliminating bridgehead skip car, includes the transition backup pad that the adjacent bridge direction in left end set up, its characterized in that: the left end downside of transition backup pad is provided with first support, and the transition backup pad comprises the first backup pad section that the position leaned on the left and is located the second backup pad section on first backup pad section right side, and the rigidity of second backup pad section reduces from left to right gradually, and the rigidity of first backup pad section is not less than the rigidity of second backup pad section.

2. The transition device of claim 1, wherein: the lower side of the transition support plate is provided with a second support on the right side of the first support, and the transition support plate between the first support and the second support forms the first support plate section.

3. The transition device of claim 1, wherein: the second supporting plate section becomes thinner gradually from left to right, so that the rigidity of the second supporting plate section is reduced gradually from left to right.

4. The utility model provides a bridgehead transition structure, including pier, right-hand member support in bridge on the pier and the road bed that is located the pier right side still include the transition device, the transition device includes the transition backup pad that the adjacent bridge direction of left end set up, its characterized in that: the transition support plate is composed of a first support plate section and a second support plate section, the first support plate section is close to the left, the second support plate section is located on the right side of the first support plate section, the rigidity of the second support plate section is gradually reduced from left to right, the rigidity of the first support plate section is not smaller than that of the second support plate section, and the second support plate section is supported on the roadbed.

5. The bridgehead transition structure of claim 4, wherein: the bottom of the first supporting plate section is supported on the pier through a first support.

6. The bridgehead transition structure of claim 5, wherein: the lower side of the transition support plate is provided with a second support on the right side of the first support, and the transition support plate between the first support and the second support forms the first support plate section.

7. The bridgehead transition structure of claim 4, wherein: the second supporting plate section becomes thinner gradually from left to right, so that the rigidity of the second supporting plate section is reduced gradually from left to right.

8. The bridgehead transition structure of claim 4, wherein: the rigidity of the first supporting plate section is consistent with that of the bridge, and the rigidity of the right end of the second supporting plate section is consistent with that of the roadbed.

Technical Field

The invention relates to a transition device and a bridge head transition structure for eliminating bridge head bumping in the technical field of bridge engineering.

Background

The road surface subsides fracture of different degrees appears in abutment back backfill department, produces jump and impact when making the vehicle pass through to lead to the fact additional impact load to bridge and road surface, make driver and passenger arrive to jolt uncomfortable, cause the vehicle to slow down by a wide margin even, serious can lead to the traffic accident, the bridgehead jump car also can make the car more serious to the impact on the other road surface of bridge floor in addition, cause the difference in height between road surface and the bridge floor bigger and bigger, be a bad cycle.

The main reason for the bump at the bridge head is that the rigidity of the bridge, the roadbed and the road surface is different, so that the rigidity of the bridge deck is inconsistent with that of the adjacent road surface. Uneven settlement occurs at the joint between the flexible road and the steel core structure 1; 2. the rigidity of the vehicle is suddenly changed when the vehicle passes through the bridge floor and the road surface. The scheme mainly adopted for solving the problem in the prior art is that a butt strap is arranged at the transition position of a bridge deck and a road surface, and the butt strap plays a transition role, so that the bridge head bump caused by the great height difference between the road surface and the bridge deck is avoided. But the proposal still cannot solve the problem of rigidity mutation generated when the vehicle passes through the bridge deck and the road surface.

Disclosure of Invention

The invention aims to provide a transition device for eliminating bump at the bridge head, which aims to solve the technical problem that bump at the bridge head is easily caused by sudden change of rigidity when a vehicle passes through a bridge floor and a road surface in the prior art; the invention also aims to provide a bridgehead transition structure using the transition device.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a transition device for eliminating bump at the bridge head has the technical scheme that:

the utility model provides a transition device for eliminating bridgehead bump car, includes the transition backup pad that the adjacent bridge direction of left end set up, the left end downside of transition backup pad is provided with first support, the downside of transition backup pad is provided with the second in the right side of first support and supports, the transition backup pad comprises the first backup pad section that the position leaned on left and the second backup pad section that is located first backup pad section right side, the rigidity of second backup pad section reduces from left to right gradually, the rigidity of first backup pad section is not less than the rigidity of second backup pad section.

The transition support plate between the first support and the second support forms the first support plate section.

The second supporting plate section becomes thinner gradually from left to right, so that the rigidity of the second supporting plate section is reduced gradually from left to right.

The technical scheme of the bridgehead transition structure is as follows:

the utility model provides a bridgehead transition structure, including pier, right-hand member support in bridge on the pier and the road bed that is located the pier right side still include the transition device, the transition device includes that the transition backup pad that the adjacent bridge orientation of left end set up leans on first backup pad section and the second backup pad section that is located first backup pad section right side by the position to constitute, and the rigidity of second backup pad section reduces from left to right gradually, and the rigidity of first backup pad section is not less than the rigidity of second backup pad section, the second backup pad section support in on the road bed.

The bottom of the first supporting plate section is supported on the pier through a first support.

The lower side of the transition support plate is provided with a second support on the right side of the first support, and the transition support plate between the first support and the second support forms the first support plate section.

The second supporting plate section becomes thinner gradually from left to right, so that the rigidity of the second supporting plate section is reduced gradually from left to right.

The rigidity of the first supporting plate section is consistent with that of the bridge, and the rigidity of the right end of the second supporting plate section is consistent with that of the roadbed.

The invention has the beneficial effects that: the transition plate is used for realizing the transition between bridge roadbeds, the transition support plate is composed of a first support plate section and a second support plate section which are arranged from left to right, the first support plate section has the support rigidity which is not less than that of the second support plate section, the rigidity of the second support plate section is gradually reduced from right to left, when a vehicle runs to the roadbed with lower rigidity through a bridge with higher rigidity, the vehicle firstly runs to the first support plate section with higher rigidity, the rigidity mutation is firstly avoided, then the vehicle moves to the roadbed through the second support plate section with changed rigidity, the rigidity mutation is avoided for the second time, the perfect transition is realized, and the problem of vehicle bump at the bridge head caused by the rigidity mutation is avoided.

Drawings

FIG. 1 is a schematic structural view of one embodiment of an bridgehead transition structure according to the present invention;

fig. 2 is a schematic diagram of the structure of the transition block in fig. 1.

Detailed Description

Examples of bridgehead transition structures are shown in FIGS. 1-2: the bridge comprises a bridge pier 19, a bridge 18 with the right end supported on the bridge pier and a roadbed 13 positioned on the right side of the bridge pier, wherein a transition device is arranged between the bridge 18 and the roadbed 13. The transition device comprises a transition support plate 5, the left end of which is arranged close to the bridge direction, a first support 3 supported on a bridge pier 19 is arranged on the lower side of the left end of the transition support plate 5, a second support 7 is arranged on the lower side of the transition support plate 5 on the right side of the first support 3, and a roadbed 13 comprises a concrete beam 10 supporting the second support 7. The second support 7 is also a hinged support and comprises a middle lifting device, in this embodiment, the lifting device is a threaded lifting device and comprises a nut 8 and a screw rod 12 matched with the nut, and the lifting of the screw rod can be adjusted by rotating the nut. The upper end of the lifting device is connected with the transition supporting plate 5 through the first hinge structure 6, the lower end of the lifting device is connected with the concrete beam 10 through the second hinge structure 9, and the first hinge structure and the second hinge structure are provided with second hinge shafts 11 of which hinge axes extend in the front-back direction.

The transition support plate is composed of a first support plate section 16 located between the first support 3 and the second support 7 and a second support plate section 15 located on the right side of the first support plate section 16, the second support plate section 15 forms a cantilever structure compared with the first support plate section, the rigidity of the second support plate section 15 is gradually reduced from left to right, the rigidity of the first support plate section 16 is consistent with the rigidity of the left end of the second support plate section 15, in the embodiment, the whole transition support plate 5 is integrally formed by the same material, and the second support plate section 15 is gradually thinned from left to right to gradually reduce the rigidity of the second support plate section 15 from left to right. The rigidity of the first supporting plate section 16 is consistent with that of the bridge 18, and the rigidity of the right end of the second supporting plate section 15 is consistent with that of the roadbed 13.

The road bed 13 and the upper side of the transition support plate 5 are paved with a road surface 15. In this embodiment, the upper side of the left end of the transition support plate is detachably connected with a buffer block 17 through a bolt, and the buffer block 17 comprises a buffer block bottom plate 21 and a rubber block 20 vulcanized and fixed on the upper side of the buffer block bottom plate. The bottom of the buffer block bottom plate 21 is provided with an arc-shaped concave structure 23, and the upper end of the transition support plate 5 is provided with an arc-shaped bulge matched with the concave structure. Bolt through holes 22 are formed in the left side and the right side of the concave structure 23 on the buffer block bottom plate 21, threaded holes corresponding to the positions of the bolt through holes are formed in the transition supporting plate 5, and bolts are arranged in the bolt through holes and the threaded holes in a penetrating mode. Through the matching of the concave structure and the arc-shaped bulge, on one hand, the position positioning of the buffer block during installation can be realized, and on the other hand, the connecting force between the buffer block and the transition support plate in the left and right directions can be increased, so that the bolt is prevented from being damaged by larger impact force when being impacted by a vehicle; the connection area between the rubber block and the bottom plate of the buffer block can be increased due to the arrangement of the arc-shaped concave structure, so that the connection strength between the rubber block and the bottom plate of the buffer block is increased.

The bridge head transition structure is explained by taking the left-to-right driving of the vehicle as an example, the vehicle firstly rolls on the transition 17 block after passing through the bridge 18, the rubber block 20 of the transition block buffers the vehicle for one time, the impact force of the vehicle on the road surface and the transition support plate is reduced, and the buffer block is taken as a first stressed part, so that the vehicle is easy to damage, and the bolt can be conveniently replaced by detaching the bolt when the vehicle is damaged. Because of the effects of the first support and the second support, the rigidity of the first support plate section 5 is kept consistent with the higher rigidity of the bridge 18, so that rigidity mutation of a vehicle from the bridge to the transition support plate can be avoided, the first support and the second support are both hinged supports, the hinged supports enable the transition support plate to have certain mobility when being impacted by the vehicle, impact force can be released to a certain extent, the problem of stress concentration caused by complete rigid support is avoided, and the service lives of the first support and the second support can be effectively prolonged; after the vehicle runs onto the second supporting plate section, the thickness of the second supporting plate section is gradually reduced from left to right, so that the rigidity of the second supporting plate section is gradually reduced from left to right, and finally the rigidity of the right end of the second supporting plate section is consistent with the rigidity of the roadbed, so that the problem of rigidity mutation of the wheels from the second supporting plate section to the roadbed is avoided, and the problem of vehicle bump at the bridge head caused by rigidity mutation is perfectly solved. If the subgrade, the bridge both sides appear subsiding and the difference in height that brings, then can adapt to this difference in height through elevating gear adjustment transition backup pad, the gap that produces between transition backup pad and the subgrade is filled through the grit. In other embodiments of the invention: the first support and the second support can also be rigid supports, for example, the transition support plate is directly fixed on a pier through the first support; the transition block can be omitted; the first supporting plate section and the second supporting plate section can also be connected by welding; the rigidity of the second supporting plate section can be changed from left to right without changing the thickness, for example, the second supporting plate section is made of several materials with different rigidities from left to right; the first support may also be a support surface structure or a support block structure; the second support may not be provided, and the right end of the second support plate section is only supported on the roadbed.

An embodiment of a transition device for eliminating bump at bridge head is shown in figures 1-2: the specific structure of the transition device is the same as that described in the above embodiments of the bridgehead transition structure, and will not be described in detail here.