阅读说明：本技术 一种悬浮腔体结构高耗能桥梁抗震挡块 (Suspension cavity structure high-energy-consumption bridge anti-seismic stop block ) 是由 张旭辉 周兴 王磊 陈秋池 吴文朋 于 2019-11-07 设计创作，主要内容包括：本发明公开一种悬浮腔体结构高耗能桥梁抗震挡块,该挡块由底板、端承板、肋板、悬浮腔体、底板固定螺杆、底板固定螺帽和悬浮腔体固定螺杆组成。该挡块与传统钢挡块的本质区别在于设置了与挡块底板脱空的悬浮腔体,该腔体通过螺杆仅在其侧面与挡块的端承板连接。地震时,桥梁上部结构撞击挤压悬浮腔体,悬浮腔体由于底面脱空,侧向刚度小,容易发生弹塑性压缩变形,实现柔性撞击,同时消耗大量的地震撞击能量；若地震较大,悬浮腔体压溃消耗之后,依然有承载力较大的端承板继续约束梁体侧移。该挡块同时具备低刚度、高耗能和高承载等优势。此外,多数地震仅会造成悬浮腔体的变形或破坏,震后只需更换悬浮腔体,无需更换整个挡块,经济、方便。(The invention discloses a high-energy-consumption bridge anti-seismic stop block with a suspension cavity structure. The essential difference between this stop and the conventional steel stop consists in the provision of a suspension chamber which is free from the stop base and which is connected to the end support plate of the stop only at its side by means of a threaded rod. When an earthquake occurs, the upper structure of the bridge impacts and extrudes the suspension cavity, and the suspension cavity is low in lateral rigidity due to the fact that the bottom surface is hollow, elastic-plastic compression deformation is easy to occur, flexible impact is achieved, and meanwhile a large amount of earthquake impact energy is consumed; if the earthquake is large, after the suspension cavity is crushed and consumed, the end bearing plate with large bearing capacity continues to restrain the beam body from moving. The stop block has the advantages of low rigidity, high energy consumption, high bearing capacity and the like. In addition, most earthquakes only cause deformation or damage of the suspension cavity, and the suspension cavity is only required to be replaced after the earthquakes, so that the whole stop block is not required to be replaced, and the earthquake-resistant suspension device is economical and convenient.)

1. A high-energy-consumption bridge anti-seismic stop block with a suspension cavity structure is characterized by comprising a bottom plate, an end bearing plate, a rib plate, a suspension cavity, a bottom plate fixing screw rod, a bottom plate fixing nut and a suspension cavity fixing screw rod; the bottom plate is fixed on two sides of the bridge pier capping beam through a pre-embedded bottom plate fixing screw and a nut; the end bearing plate is fixed on the rear side in the bottom plate by welding the bottom edge, and the end bearing plate is vertical to the bottom plate; the number of the ribbed plates is 3-6, and two side edges of the ribbed plates are respectively welded with the bottom plate and the end bearing plate; the suspension cavity is suspended above the bottom plate, and is fixed on the end bearing plate through the suspension cavity fixing screw on the side surface of the suspension cavity, and the bottom surface of the suspension cavity is not directly connected with the bottom plate.

2. The apparatus of claim 1, wherein the suspension chamber is a thin-walled structure without a top cover and a bottom cover, and forms a chamber structure with the end bearing plate or independently; the specific shape of the suspension cavity can be triangular, rectangular, arched single bodies and multi-body combinations thereof, and can also be round, hexagonal and other honeycomb structures; the end part of the side plate of the suspension cavity is reserved with a plurality of screw holes, and the number of the screw holes and the size of the screw heads are matched with those of the fixing screw rod of the suspension cavity.

3. The device as claimed in claim 1, wherein the end support plate is provided with a plurality of holes for the fixing screws of the suspension cavity to pass through, and the positions and the number of the holes are matched with those of the screw holes at the end part of the side plate of the suspension cavity.

4. The device as claimed in claim 1, wherein the bottom plate is provided with a plurality of holes for the bottom plate fixing screws to pass through, and the positions and the number of the holes are matched with those of the bottom plate fixing screws.

5. The device of claim 1, wherein the bottom plate fixing screw is pre-embedded at appropriate positions on two sides of the bent cap during construction, or drilled at appropriate positions on two sides of the bent cap after construction, and embedded by structural adhesive.

6. The device as claimed in claim 1, wherein the suspension chamber is made of low yield strength steel plate, stainless steel plate, alloy steel, plastic steel, etc.; the bottom plate, the end bearing plate and the rib plate are made of steel plates with high strength, stainless steel plates, alloy steel, plastic steel and the like.

Technical Field

The invention relates to a high-energy-consumption bridge anti-seismic stop block with a suspension cavity structure, and belongs to the field of bridge structure anti-seismic and disaster prevention.

Background

China is a country with multiple earthquakes, and in recent years, a plurality of earthquakes occur, so that a plurality of building structures are damaged, and huge economic losses are caused. The upper and lower structures of a bridge are usually connected by a bridge support, which is superior in its ability to bear vertical loads of the upper structure, but has a very limited ability to bear lateral loads and deformations of an earthquake. Under the action of earthquake, a plurality of bridges often separate from the support because the upper structure is laterally moved too much, and the falling beam damage is caused. Therefore, the stop blocks are arranged on two sides of the cover beam to prevent or reduce the damage of the beam falling of the bridge superstructure in the earthquake.

At present, most of common bridge anti-seismic stop blocks are reinforced concrete stop blocks and steel stop blocks. The reinforced concrete stop block is characterized in that reinforcing steel bars are embedded in the reinforced concrete stop block during the construction of the bent cap, and then a template is installed and concrete is poured, so that the stop block is convenient to construct and has certain energy consumption characteristics, but the side shift resistance of the stop block is limited, the stop block is easy to damage during an earthquake, and the problem that the stop block is difficult to repair after the earthquake exists; the steel dog adopts the formula theory of joining in marriage more, pre-buried or implant the screw rod on the bent cap, then through the bolt fastening steel dog, the advantage of this type of dog lies in the change and the maintenance after convenient shake, but current steel dog mainly is that transversely cut off the back whole welding on PMKD with I-steel or rectangular steel of take the altitude, its lateral rigidity is big, it bumps hard collision relation during the earthquake between its and the bridge superstructure, often can arouse the local damage of bridge superstructure, can not play fine buffering and power consumption effect. An ideal bridge anti-seismic stop block should have the characteristics of low lateral rigidity, high lateral displacement resistance, high energy consumption and convenience in replacement.

Disclosure of Invention

The invention aims to provide a suspension cavity structure high-energy-consumption bridge anti-seismic stop block, which can effectively solve the problems and adopts the following specific technical scheme:

a high-energy-consumption bridge anti-seismic stop block with a suspension cavity structure is characterized by comprising a bottom plate, an end bearing plate, a rib plate, a suspension cavity, a bottom plate fixing screw rod, a bottom plate fixing nut and a suspension cavity fixing screw rod; the bottom plate is fixed on two sides of the bridge pier capping beam through a pre-embedded bottom plate fixing screw and a nut; the end bearing plate is fixed on the rear side in the bottom plate by welding the bottom edge, and the end bearing plate is vertical to the bottom plate; the number of the ribbed plates is 3-6, and two side edges of the ribbed plates are respectively welded with the bottom plate and the end bearing plate; the suspension cavity is suspended above the bottom plate, and is fixed on the end bearing plate through the suspension cavity fixing screw on the side surface of the suspension cavity, and the bottom surface of the suspension cavity is not directly connected with the bottom plate.

Particularly, the suspension cavity is a thin-wall structure without a top cover and a bottom cover, and the suspension cavity and the end bearing plate or the end bearing plate form a cavity structure independently; the specific shape of the suspension cavity can be triangular, rectangular, arched single bodies and multi-body combinations thereof, and can also be round, hexagonal and other honeycomb structures; the end part of the side plate of the suspension cavity is reserved with a plurality of screw holes, and the number of the screw holes and the size of the screw heads are matched with those of the fixing screw rod of the suspension cavity.

Particularly, a plurality of holes for the fixing screw rods of the suspension cavity to pass through are reserved in the end bearing plate, and the positions and the number of the holes are matched with those of screw holes in the end part of the side plate of the suspension cavity.

Particularly, a plurality of holes for the bottom plate fixing screw rods to pass through are reserved in the bottom plate, and the positions and the number of the holes are matched with the bottom plate fixing screw rods.

Particularly, the bottom plate fixing screw is embedded in appropriate positions on two sides of the bent cap in construction, and holes can be drilled in appropriate positions on two sides of the bent cap after construction is finished and the bent cap is placed in the holes through structural adhesive and the like.

In particular, the suspension cavity is made of low-yield-strength steel plates, stainless steel plates, alloy steel, plastic steel and the like; the bottom plate, the end bearing plate and the rib plate are made of steel plates with high strength, stainless steel plates, alloy steel, plastic steel and the like.

The invention has the beneficial effects that: the invention provides a high-energy-consumption bridge anti-seismic stop block with a suspension cavity structure. When an earthquake occurs, the upper structure of the bridge laterally moves, firstly, the suspension cavity is impacted and extruded, and the suspension cavity is easy to generate elastic-plastic compression deformation due to the fact that the bottom surface is hollow and the lateral rigidity is relatively small, so that flexible impact is realized, and a large amount of earthquake impact energy is consumed; if a large earthquake occurs, the suspension cavity may be crushed after consuming a large amount of energy and then quit working, but at the moment, the end bearing plate with large lateral bearing capacity continues to restrain the beam body from moving, so that the beam body is protected from safety. Therefore, the stop block has the advantages of low rigidity, high energy consumption, high bearing capacity and the like. In addition, the suspension cavity of this dog passes through the screw rod to be connected with the end bearing plate of dog, and most earthquake only can arouse under the striking and cause the deformation or the destruction of suspension cavity, consequently only need change and maintain the suspension cavity after shaking, need not to change whole dog device, and economy practices thrift to it is very convenient.

Drawings

FIG. 1 is a side view of the present invention on a capping beam;

FIG. 2 is a detail view of the present invention on a capping beam;

FIG. 3 is a detailed view of the present invention;

FIG. 4 is a diagram of the force deformation of the present invention under the action of an earthquake;

fig. 5 is a diagram of another exemplary suspension chamber configuration of the present invention.

Reference numerals: the device comprises a base plate 1, a base plate 2, a bearing plate 2, a ribbed plate 3, a suspension cavity 4, a base plate fixing screw 5, a base plate fixing nut 6 and a suspension cavity fixing screw 7.

Detailed Description

The following examples illustrate possible embodiments of the patent, but are not intended to limit the scope of the patent as claimed.

Referring to fig. 1 to 5, a first preferred embodiment of the present invention is shown, which is a suspension cavity structure high energy consumption bridge anti-seismic stop block, having a suspension cavity, capable of effectively consuming energy, having different energy consumption effects for minor and major earthquakes, and having different replacement modes for the minor and major earthquakes. When a small earthquake occurs, the suspension cavity is plastically deformed, and only the suspension cavity needs to be replaced after the earthquake occurs. When a large earthquake occurs, the suspension cavity and the fixed plate are subjected to plastic deformation simultaneously, and the whole device can be replaced after the earthquake so as to be recovered for use.

The specific design scheme of this example is as follows:

a suspension cavity structure high-energy-consumption bridge anti-seismic stop block is characterized by comprising a bottom plate 1, an end bearing plate 2, a rib plate 3, a suspension cavity 4, a bottom plate fixing screw rod 5, a bottom plate fixing screw cap 6 and a suspension cavity fixing screw rod 7; the bottom plate 1 is fixed on two sides of the bridge pier capping beam through a pre-embedded bottom plate fixing screw 5 and a nut 6; the end bearing plate 2 is fixed on the rear side of the bottom plate by welding the bottom edge 1, and the end bearing plate 2 is vertical to the bottom plate 1; the number of the ribbed plates 3 is 3-6, and two side edges of the ribbed plates are respectively welded with the bottom plate 1 and the end bearing plate 2; suspension cavity 4 suspend in bottom plate 1 top, through suspension cavity set screw 7 with its side be fixed in on end carrier plate 2, suspension cavity 4 bottom surface and bottom plate 1 are not directly connected.

The suspension cavity 4 in the device is a thin-wall structure without a top cover and a bottom cover, and forms a cavity structure with the end bearing plate 2 or independently; the specific shape of the suspension cavity 4 can be a single triangular, rectangular or arched body or a multi-body combination thereof, and can also be a honeycomb structure such as a round or hexagonal structure; a plurality of screw holes are reserved at the end part of the side plate of the suspension cavity 4, and the number of the screw holes and the size of the screw heads are matched with those of the suspension cavity fixing screw 7.

A plurality of holes for the fixing screw rods 7 of the suspension cavity to pass through are reserved in the end bearing plate 2 of the device, and the positions and the number of the holes are matched with those of screw holes in the end part of the side plate of the suspension cavity 4.

A plurality of holes for the bottom plate fixing screw rods 5 to pass through are reserved in a bottom plate 1 of the device, and the positions and the number of the holes are matched with the bottom plate fixing screw rods 5.

The bottom plate fixing screw rods 5 in the device are embedded in proper positions on two sides of the bent cap conveniently during construction, and holes can be drilled in proper positions on two sides of the bent cap after construction is finished and the bent cap is placed in the holes through structural adhesive and the like.

The suspension cavity 4 in the device is made of low-yield-strength steel plates, stainless steel plates, alloy steel, plastic steel and the like; the bottom plate 1, the end bearing plate 2 and the rib plate 3 are made of high-strength steel plates, stainless steel plates, alloy steel, plastic steel and the like.

The applicant states that a new method, which is generated by combining some steps of the above-mentioned embodiment with the technical solution of the summary of the invention part based on the above-mentioned embodiment, is also one of the description scope of the present invention, and other implementation methods of these steps are not listed in the present application for the sake of brevity.

The technical principle is as follows: the invention provides a high-energy-consumption bridge anti-seismic stop block with a suspension cavity structure, which is essentially different from a traditional steel stop block in that a suspension cavity which is separated from a stop block bottom plate is arranged, the cavity is connected with an end bearing plate of the stop block only on the side surface of the cavity through a screw rod, and the shape of the cavity can be selected according to the actual situation of engineering. When an earthquake occurs, the upper structure of the bridge laterally moves, firstly, the suspension cavity 4 is impacted and extruded, and the suspension cavity 4 has relatively small lateral rigidity due to the fact that the bottom surface is hollow, so that steel plates on two sides are easy to generate elastic-plastic compression deformation, flexible impact is realized, and a large amount of earthquake impact energy is consumed; if a large earthquake occurs, the suspension cavity 4 may be crushed after consuming a large amount of energy and then quit working, but the end bearing plate 2 with a large lateral bearing capacity continues to restrain the beam body from moving, so as to protect the beam body from safety. Therefore, the stop block has the advantages of low rigidity, high energy consumption, high bearing capacity and the like. In addition, the suspension cavity 4 of this dog is connected with the end bearing plate of dog through screw rod 7, and most earthquake only can arouse under the striking and cause the deformation or the destruction of suspension cavity 4, consequently only need change and maintain suspension cavity 4 after the shake, need not to change whole dog device, and economy practices thrift to it is very convenient.

The applicant states that a new method generated by combining some steps of the above-mentioned embodiment with the technical solution of the summary of the invention is also one of the description scope of the present invention, and other embodiments of these steps are not listed in the present application for the sake of brevity.

The present invention is not limited to the above embodiments, and all embodiments adopting the similar structure and method to achieve the object of the present invention are within the protection scope of the present invention.