CN110777641A - Multistage energy consumption bridge antidetonation dog convenient to maintain and change - Google Patents
Multistage energy consumption bridge antidetonation dog convenient to maintain and change Download PDFInfo
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- CN110777641A CN110777641A CN201911079139.9A CN201911079139A CN110777641A CN 110777641 A CN110777641 A CN 110777641A CN 201911079139 A CN201911079139 A CN 201911079139A CN 110777641 A CN110777641 A CN 110777641A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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Abstract
The invention discloses a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace, which consists of a bottom plate, a fixed cavity plate cover, a sliding cavity plate cover, an energy-consumption inner core I, an energy-consumption inner core II, screws, a supporting plate, a guide slide bar, a screw rod and a nut. When a small earthquake occurs, the sliding cavity integrally compresses the inner core in the fixed cavity to consume energy, and the energy-consuming inner core is replaced correspondingly; when a large earthquake occurs, the sliding cavity can also generate self compression deformation, and simultaneously, the inner core of the sliding cavity is compressed to consume earthquake energy, and the sliding cavity and the energy-consuming inner core can be replaced correspondingly; during a super-large earthquake, after the sliding cavity and the energy-consuming inner core are both crushed, the fixed cavity with high lateral rigidity still restrains the beam body from moving. The stop block not only effectively realizes the multi-stage energy consumption characteristics in different earthquakes, but also is very convenient for maintenance and replacement after the earthquake.
Description
Technical Field
The invention relates to a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace, and belongs to the field of bridge anti-seismic and disaster prevention.
Background
The earthquake action can cause the transverse displacement of the bridge structure, particularly cause the dislocation and the slippage of the upper beam body, even cause the upper structure of the bridge to slide down from the bridge pier in serious conditions, further cause the collapse accident of the bridge structure and generate huge economic loss. Therefore, when modern bridge structures are designed, anti-seismic stop blocks are usually arranged at the tops of bridge piers and bent caps, so that the transverse dislocation slippage of the bridge superstructure in an earthquake can be effectively limited, partial earthquake energy can be consumed to a certain extent, and the earthquake damage effect is reduced.
At present, most of bridge anti-seismic stop blocks commonly used in engineering are reinforced concrete stop blocks and steel stop blocks. The reinforced concrete dog is mainly when the bridge pier is under construction just pre-buried reinforcing bar, then carries out concrete placement shaping again, and this type of dog construction is convenient, nevertheless is not convenient for restore after shaking, and especially this type of dog lateral rigidity is big, very easily takes place the direct shear during the earthquake and destroys, causes the local destruction of pier and bent cap easily, and its power consumption effect is also very limited. The steel dog adopts the bolt to install more, changes easily after the shake, but the steel dog has very big lateral rigidity, still is the rigidity collision between roof beam body and the steel dog during the earthquake, very easily causes the destruction of roof beam body and dog. An ideal stop should be easy to maintain and replace while having low lateral stiffness, good energy dissipation characteristics and effective beam displacement restraint capability.
Disclosure of Invention
The invention aims to provide a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace, which can effectively solve the problems and adopts the following specific technical scheme:
a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace comprises a bottom plate, a fixed cavity plate cover, a sliding cavity plate cover, an energy-consumption inner core I, an energy-consumption inner core II, screws, a supporting plate, a guide sliding rod, a screw rod and a nut; the bottom plate is fixed at two ends of the cover beam through a screw and a nut; the fixed cavity is formed by welding an end plate and two side plates, the bottom edge of the end plate is welded with the bottom plate and is reinforced by a supporting and protecting plate, a vertical limiting plate is welded at the front end of the side plate, and a plurality of horizontal guide slide rods are welded at the middle edge of the side edge; the sliding cavity is defined by a front end plate, a rear end plate and two side plates, the rear end plate is wider than the front end plate, the widened part forms a limiting plate, a plurality of guide chutes matched with the guide slide bars of the fixed cavity are reserved in the middle of the limiting plate, the rear end plate of the sliding cavity is embedded in the limiting plate of the fixed cavity to form the fixed cavity, and the sliding cavity can integrally slide in a certain range along the guide slide bars of the fixed cavity; the energy-consuming inner core is respectively filled in the sliding cavity and the fixed cavity; the fixed cavity plate cover and the sliding cavity plate cover are respectively fixed on the tops of the sliding cavity and the fixed cavity by adopting a plurality of screws after the energy-consuming inner core is installed.
Particularly, the rear fixing cavity is welded with the bottom plate at the bottom edge of the end plate, the two side plates can be welded with or without the bottom plate, 1-3 horizontal guide sliding rods are arranged at proper positions in the middle of the side plates, the front ends of the guide sliding rods are in contact with the limiting plate, and the rear ends of the guide sliding rods are separated from the end plate by a certain distance and are slightly wider than the thickness of the limiting plate of the sliding cavity.
Particularly, the width of the sliding cavity is larger than or equal to that of the fixed cavity, the front end plate of the sliding cavity can be a single flat plate or a bottom-free trapezoidal structure consisting of 3 plates, the two side plates of the sliding cavity are concave arc plates, and 1-3 guide sliding grooves matched with the guide sliding rods of the fixed cavity are arranged at proper positions in the middle of a limiting plate at the widening part of the rear end plate of the sliding cavity.
In particular, the energy dissipation inner core can be a low-yield metal honeycomb plate, a low-strength porous concrete block or other viscoelastic energy dissipation materials, and the energy dissipation inner core has two compression rigidities. The inner core with high rigidity is arranged in the sliding cavity, and the inner core with low compression rigidity is arranged in the fixed cavity. The appearance of the energy-consuming inner core is consistent with the inner space of the cavity, the energy-consuming inner core is directly put into the cavity from the upper part of the cavity, and the energy-consuming inner core is fixed only by adopting the fixed cavity plate cover and the sliding cavity plate cover.
Particularly, the fixed cavity plate cover and the sliding cavity plate cover are fixed with the fixed cavity and the sliding cavity through screws, the cover plate can be detached at the later stage, and the energy-consuming inner core in the cavity is maintained and replaced.
Particularly, the supporting plates are preferably low-yield steel plates and can be other steel plates, the number of the supporting plates is 3-6, the thickness of the supporting plates is 1-3cm, the design is specifically carried out according to the lateral rigidity of the supporting plates, and the number and the thickness of the supporting plates enable the maximum lateral rigidity of the stop block to be slightly smaller than the lateral rigidity of the bridge abutment.
Particularly, 4-8 holes are reserved in the bottom plate and can be fixed with the bridge cover beam through screws.
Particularly, the screw is installed on the bent cap in a pre-buried or bar-planting mode.
The invention has the beneficial effects that: the invention provides a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace, which is of a drawer type structure consisting of a fixed cavity filled with a high-energy-consumption inner core and a sliding cavity, and has different anti-seismic energy-consumption paths under different earthquakes. When a small earthquake occurs, the bridge beam directly impacts the sliding cavity, the sliding cavity integrally slides in the fixed cavity, and the energy-consuming inner core in the fixed cavity is compressed to consume earthquake energy; when a large earthquake occurs, the sliding cavity can continue to generate self compression deformation after the inner core of the fixed cavity is compressed in an integral sliding manner, and simultaneously the inner core of the sliding cavity is compressed to consume earthquake energy; when the earthquake occurs excessively, the energy-consuming inner core and the sliding cavity are crushed, and the fixed cavity with high lateral rigidity restrains the transverse displacement of the beam body, so that the beam body is prevented from sliding to the maximum extent. In addition, the stop block is very convenient to maintain and replace under different earthquakes. After a small earthquake, only the energy-consuming inner core in the fixed cavity needs to be replaced; during medium and large earthquakes, due to the design of the concave arc-shaped plate in the side plate of the sliding cavity, the sliding cavity is inevitably only compressed to be deformed by invagination under the impact of an earthquake, so that a peripheral solid cavity is effectively protected, and only the energy-consuming inner core and the sliding cavity are required to be replaced after the earthquake; after an extra-large earthquake, the fixed cavity structure can be conveniently replaced through the bolts. Therefore, through the design of the drawer type structure, the stop block not only effectively realizes the multi-stage energy consumption characteristics in different earthquakes, but also is very convenient for maintenance and replacement after the earthquake.
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 bent cap;
FIG. 3 is a left detail view of the present invention;
FIG. 4 is a right detail view of the present invention;
FIG. 5 is a diagram of the force deformation of the present invention under the action of an earthquake.
Reference numerals: 1-bottom plate, 2-fixed cavity, 3-fixed cavity plate cover, 4-sliding cavity, 5-sliding cavity plate cover, 6-energy-consuming inner core I, 7-energy-consuming inner core II, 8-screw, 9-support plate, 10-guide slide bar, 11-screw and 12-nut.
Detailed Description
The following description is given by way of example only, and not by way of limitation, of the possible embodiments of the present invention.
Referring to fig. 1 to 2, a first preferred embodiment of the present invention is shown, which is a multistage energy-consuming bridge seismic stop with easy maintenance and replacement, which is a drawer type structure composed of a fixed cavity filled with a high-energy-consuming core and a sliding cavity, and has different seismic energy-consuming paths and maintenance and replacement methods under different earthquakes.
The specific design scheme of this example is as follows:
a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace comprises a bottom plate 1, a fixed cavity 2, a fixed cavity plate cover 3, a sliding cavity 4, a sliding cavity plate cover 5, an energy-consumption inner core I6, an energy-consumption inner core II7, screws 8, a supporting plate 9, a guide sliding rod 10, a screw rod 11 and a screw cap 12, wherein the bottom plate 1 is fixed at two ends of a cover beam through the screw rod 11 and the screw cap 12; the fixed cavity 2 is formed by welding an end plate and two side plates, the bottom edge of the end plate is welded with the bottom plate 1 and is reinforced by a supporting and protecting plate 9, a vertical limiting plate is welded at the front end of the side plate, and a plurality of horizontal guide slide rods 10 are welded at the middle edge of the side edge; the sliding cavity 4 is defined by a front end plate, a rear end plate and two side plates, the rear end plate is wider than the front end plate, the widened part forms a limiting plate, a plurality of guide chutes matched with the guide sliding rods of the fixed cavity 2 are reserved in the middle of the limiting plate, the rear end plate of the sliding cavity 4 is embedded in the limiting plate of the fixed cavity to form the fixed cavity 2, and the sliding cavity 4 can integrally slide in a certain range along the guide sliding rods 10 of the fixed cavity 2; the energy-consuming inner cores 7 and 6 are respectively filled in the sliding cavity 4 and the fixed cavity 2; the fixed cavity plate cover 3 and the sliding cavity plate cover 5 are respectively fixed on the tops of the sliding cavity 4 and the fixed cavity 2 by adopting a plurality of screws 8 after the energy-consuming inner cores 6 and 7 are installed.
A fixed cavity 2 of the device is welded with a bottom plate 1 at the bottom edge of an end plate, two side plates can be welded with or without the bottom plate 1, 1-3 horizontal guide sliding rods are arranged at proper positions in the middle of the side plates, the front ends of the guide sliding rods 10 are in contact with a limiting plate, and the rear ends of the guide sliding rods are separated from the end plate by a certain distance which is slightly wider than the thickness of a limiting plate of a sliding cavity 4.
The width of the sliding cavity 4 is larger than or equal to that of the fixed cavity 2, the front end plate of the sliding cavity 4 can be a single flat plate, and can also be a bottom-free trapezoidal structure formed by 3 plates, the two side plates of the sliding cavity 4 are concave arc plates, and 1-3 guide sliding grooves matched with the sliding rods 10 of the fixed cavity 2 are arranged at proper positions in the middle of a limiting plate of the wider part of the rear end plate of the sliding cavity 4.
The energy dissipation inner cores 6 and 7 of the device can be low-yield metal honeycomb plates, low-strength porous concrete blocks or other viscoelastic energy dissipation materials, and the energy dissipation inner cores 6 and 7 have two compression rigidities. The inner core with high rigidity is arranged in the sliding cavity 4, and the inner core with low compression rigidity is arranged in the fixed cavity 2. The appearance of the energy-consuming inner cores 6 and 7 is consistent with the inner space of the cavity, the energy-consuming inner cores 6 and 7 are directly put in from the upper part of the cavity, and only the fixed cavity plate cover 3 and the sliding cavity plate cover 5 are adopted for fixing.
The fixed cavity plate cover 3 and the sliding cavity plate 5 of the device are fixed with the fixed cavity 2 and the sliding cavity 4 through screws 8, the cover plate can be detached at the later stage, and the energy-consuming inner cores 6 and 7 in the cavity are maintained and replaced.
The supporting plates 9 of the device are preferably low-yield steel plates and can be other steel plates, the number of the supporting plates is 3-6, the thickness of the supporting plates is 1-3cm, the device is specifically designed according to the lateral rigidity of the device, and the number and the thickness of the supporting plates 9 enable the maximum lateral rigidity of the stop block to be slightly smaller than the lateral rigidity of the bridge abutment.
4-8 holes are reserved on a bottom plate 1 of the device and can be fixed with a bridge cover beam through a screw 9.
The screw rod 11 of the device is arranged on the bent cap in a pre-buried or bar-planting mode.
The applicant declares that a new method, which is generated by combining some steps of the above embodiments with the technical solution of the summary of the invention part based on the above embodiments, 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.
In the embodiment, the multistage energy consumption bridge anti-seismic stop block convenient to maintain and replace is provided, the stop block is of a drawer type structure consisting of the fixed cavity and the sliding cavity which are filled with the high-energy consumption inner core, the multistage energy consumption characteristics in different earthquakes are effectively realized, and the maintenance and the replacement after the earthquake are very convenient.
The technical principle is as follows: the invention provides a multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace, which is of a drawer type structure consisting of a fixed cavity filled with a high-energy-consumption inner core and a sliding cavity, and has different anti-seismic energy-consumption paths under different earthquakes. When a small earthquake occurs, the bridge beam directly impacts the sliding cavity 4, the sliding cavity 4 integrally slides in the fixed cavity 2, and thus the energy-consuming inner core 6 in the fixed cavity 2 is extruded to generate plastic deformation to consume energy; when a large earthquake occurs, the sliding cavity 4 can continue to make the two concave arc-shaped plates per se generate plastic deformation after the energy dissipation inner core 6 in the fixed cavity 2 is compressed by integral sliding, and simultaneously the energy dissipation inner core 7 in the cavity is compressed to consume the earthquake energy; when an overlarge earthquake occurs, the energy-consuming inner cores 6 and 7 and the sliding cavity 4 are crushed, and the fixed cavity 2 with high lateral rigidity restrains the transverse displacement of the beam body, so that the beam body is prevented from sliding to the maximum extent. In addition, the stop block is very convenient to maintain and replace under different earthquakes. After a small earthquake, only the energy-consuming inner core in the fixed cavity 2 needs to be replaced; during medium and large earthquakes, due to the design of the concave arc-shaped plate in the side plate of the sliding cavity 4, the sliding cavity 4 can only compress the side plate to be invaginated and deformed under the impact of an earthquake, so that the peripheral solid cavity 2 is effectively protected, and only the energy-consuming inner cores 6 and 7 and the sliding cavity 4 need to be replaced after the earthquake; after an overlarge earthquake, the fixed cavity 2 can be conveniently replaced through the bolts. Therefore, through the design of the drawer type structure, the stop block not only effectively realizes the multi-stage energy consumption characteristics in different earthquakes, but also is very convenient for maintenance and replacement after the earthquake.
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.
Claims (8)
1. A multistage energy-consumption bridge anti-seismic stop block convenient to maintain and replace is characterized by comprising a bottom plate, a fixed cavity plate cover, a sliding cavity plate cover, an energy-consumption inner core I, an energy-consumption inner core II, screws, a supporting plate, a guide slide rod, a screw rod and a nut; (ii) a The bottom plate is fixed at two ends of the cover beam through a screw and a nut; the fixed cavity is formed by welding an end plate and two side plates, the bottom edge of the end plate is welded with the bottom plate and is reinforced by a supporting and protecting plate, a vertical limiting plate is welded at the front end of the side plate, and a plurality of horizontal guide slide rods are welded at the middle edge of the side edge; the sliding cavity is defined by a front end plate, a rear end plate and two side plates, the rear end plate is wider than the front end plate, the widened part forms a limiting plate, a plurality of guide chutes matched with the guide slide bars of the fixed cavity are reserved in the middle of the limiting plate, the rear end plate of the sliding cavity is embedded in the limiting plate of the fixed cavity to form the fixed cavity, and the sliding cavity can integrally slide in a certain range along the guide slide bars of the fixed cavity; the energy-consuming inner core is respectively filled in the sliding cavity and the fixed cavity; the fixed cavity plate cover and the sliding cavity plate cover are respectively fixed on the tops of the sliding cavity and the fixed cavity by adopting a plurality of screws after the energy-consuming inner core is installed.
2. The device as claimed in claim 1, wherein the rear fixed cavity is welded to the bottom plate at the bottom edge of the end plate, the two side plates may or may not be welded to the bottom plate, 1 to 3 horizontal guide rods are disposed at appropriate positions in the middle of the side plates, the front ends of the guide rods contact the limiting plate, and the rear ends of the guide rods are spaced from the end plate by a certain distance and slightly wider than the thickness of the limiting plate of the sliding cavity.
3. The device according to claim 1, wherein the width of the sliding cavity is greater than or equal to the width of the fixed cavity, the front end plate of the sliding cavity can be a single flat plate or a bottom-free trapezoidal structure formed by 3 plates, the two side plates of the sliding cavity are concave arc plates, and 1 to 3 guide chutes matched with the guide rods of the fixed cavity are arranged at proper positions in the middle of the limiting plate at the wider part of the rear end plate of the sliding cavity.
4. The device according to claim 1, wherein the energy dissipation core can be a low-yield metal honeycomb plate, a low-strength porous concrete block or other viscoelastic energy dissipation materials, the energy dissipation core has two compression rigidities, the core with the high rigidity is arranged in the sliding cavity, the core with the low compression rigidity is arranged in the fixed cavity, the shape of the energy dissipation core is consistent with the inner space of the cavity, the energy dissipation core is directly arranged from the upper part of the cavity, and the energy dissipation core is fixed only by adopting the fixed cavity plate cover and the sliding cavity plate cover.
5. The device of claim 1, wherein the fixed cavity plate cover and the sliding cavity plate cover are fixed with the fixed cavity and the sliding cavity by screws, and the cover plate can be detached at a later stage to maintain and replace the energy-consuming inner core in the cavity.
6. The device according to claim 1, wherein the supporting and protecting plates are preferably low-yield steel plates or other steel plates, the number of the supporting and protecting plates is 3-6, the thickness is 1-3cm, and the device is designed according to the lateral rigidity, and the number and the thickness of the supporting and protecting plates are such that the maximum lateral rigidity of the stop block is slightly less than the lateral rigidity of the bridge abutment.
7. The device of claim 1, wherein the bottom plate is provided with 4-8 holes and can be fixed with the bridge capping beam through a screw.
8. The device of claim 1, wherein the screw is mounted on the capping beam by pre-embedding or bar-planting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079139.9A CN110777641A (en) | 2019-11-07 | 2019-11-07 | Multistage energy consumption bridge antidetonation dog convenient to maintain and change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079139.9A CN110777641A (en) | 2019-11-07 | 2019-11-07 | Multistage energy consumption bridge antidetonation dog convenient to maintain and change |
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| CN110777641A true CN110777641A (en) | 2020-02-11 |
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| CN201911079139.9A Pending CN110777641A (en) | 2019-11-07 | 2019-11-07 | Multistage energy consumption bridge antidetonation dog convenient to maintain and change |
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Application publication date: 20200211 |