CN212335745U - Foam metal reinforced bridge anti-collision stop block - Google Patents

Foam metal reinforced bridge anti-collision stop block Download PDF

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Publication number
CN212335745U
CN212335745U CN202021238965.1U CN202021238965U CN212335745U CN 212335745 U CN212335745 U CN 212335745U CN 202021238965 U CN202021238965 U CN 202021238965U CN 212335745 U CN212335745 U CN 212335745U
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China
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bolt
foam metal
energy
thin
stop block
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CN202021238965.1U
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Chinese (zh)
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孙得璋
何先龙
张昊宇
陈洪富
李思汉
戴君武
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Institute of Engineering Mechanics China Earthquake Administration
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Institute of Engineering Mechanics China Earthquake Administration
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Abstract

A foam metal reinforced bridge anti-collision stop block comprises an energy dissipation body A arranged inside a stop block (1) and an energy dissipation body B arranged on the inner side of the stop block (1); the energy dissipation body A comprises an energy dissipation bolt (2), a bolt anchoring plate (8), an energy dissipation soft steel bar (9) and a nut (10); the energy dissipation body B comprises a thin rubber cushion layer (3), a fixing bolt (4), a foam metal layer (5), a thin steel plate (6) and a shape memory alloy spring body (7). The utility model has the characteristics of the environmental protection, stability is strong, and the damping distributes evenly, and the power consumption is obvious, and self recovery ability is strong.

Description

Foam metal reinforced bridge anti-collision stop block
Technical Field
The utility model relates to a shock attenuation shock insulation field, concretely relates to bridge anticollision dog is strengthened to foam metal, but the wide shock attenuation protection fields such as being applied to building house, life line engineering, medical equipment.
Background
Most regions of continents in China are located in regions above VII degrees of earthquake intensity, the safety requirement of economic high-speed development in China is in sharp contradiction with the severe earthquake disaster threat faced by vast cities in China, and particularly, the contradiction is excited by huge casualties and property loss caused by a few recent major earthquakes (Wenchuan earthquakes, Jade tree earthquakes and Ludian earthquakes) in China. In large earthquakes, facilities such as medical buildings and the like are also damaged greatly, casualties are further aggravated, and huge social influence is caused. The main tasks of shockproof and disaster reduction of life line engineering in China comprise: the earthquake disaster prevention method strengthens the construction of earthquake monitoring facilities in areas along the national major lifeline engineering, ensures the earthquake safety of the lifeline engineering, and emphatically improves the earthquake disaster prevention capability of major and medium cities and major lifeline engineering. Safety and thinking danger, earthquake damage and earthquake potential safety hazard based on the bridge dog, the utility model discloses strengthen to resist the earthquake effect to the concrete dog from new materials and structural style design emphatically.
The research of the material is not found to be applied to a bridge concrete stop block, so exploratory research is very necessary, the practical technology of the foam metal stop block of the project can generate great economic benefit, the application of foam metal in a large amount is promoted at one time, in addition, for other earthquake key monitoring and defense areas, the technology can greatly increase the safety of the bridge, the indirect economic efficiency is obvious, the scientific basis can be used for the seismic design of common medium and small bridges and even the design of other types of bridges, and the tile is added for the smooth implementation of disaster prevention and reduction tasks and the bricking and tiling of disaster prevention and reduction career.
After the severe earthquake in Wenchuan, numerous scholars at home and abroad find that the earthquake-resistant stop blocks are damaged very commonly and seriously through investigation on the earthquake damage of bridge structures. In Wen river earthquake, be located the plateau bridge in city rainbow mouth country plateau village in river weir city, because the simply supported bridge each strides and simply supports through the pier platform and links to each other, its mode of resisting horizontal seismic force only sets up horizontal dog in pier department and retrains it, and its dog has appeared seriously and has squeezed destruction, can't resist bigger horizontal seismic force effect completely. The Minjiang bridge is located at the Minjiang town 213 where Minjiang is crossed, the earthquake middle bridge rotates clockwise, the displacement directions of the upper structure at two banks are just opposite, and the concrete stop blocks are collided and damaged. The stoppers of the temple plateau bridge and the hundred-flower bridge are seriously damaged, and the like.
The domestic scholars think that the selection of parameters such as the type, the rigidity and the spacing of the stop blocks has obvious influence on the function of the stop blocks in the bridge and the dynamic response of the shock insulation bridge through the analysis of the influence of the beam falling prevention device on the dynamic characteristics of the shock insulation bridge, and verify the influence by taking a three-span continuous beam as an example. The 8 foreign PC bridge anti-falling beam structures are summarized, and the stop block is considered to have better effect on preventing the beam from falling transversely and poorer effect on preventing the beam from falling longitudinally. According to survey, statistics and analysis on the Haicheng earthquake and the Tangshan earthquake, the bridge with the longitudinal and transverse shockproof stop blocks is low in vulnerability, and the function of the stop blocks can be seen. A stopper unit for calculation is established by a method that two nodes at the beam end of the rod unit and the pier beam are respectively driven by the pier beam, and a nail type rubber stopper and a bowl type rubber stopper are designed together with Hushide. Although domestic scholars have conducted so many studies, the chinese regulations still remain an empirical blind area for the design of stops.
The early research on the stop block in foreign countries is carried out, the damage mechanism of the stop block is relatively thoroughly researched, and therefore the specification is relatively perfect. Research has focused on the connection of the stop to the abutment. It is recommended to use the connection mode of connecting the stop block and the abutment by steel bars and adding lubricant on the contact surface to form a weak surface on which the damage occurs, and the limit is mainly realized by friction and connecting the steel bars, thus achieving the purpose of limiting and protecting the abutment. The report provides a calculation formula of the restraint force of the stop block and a calculation formula of the reinforcement area of the vertical reinforcements and the transverse reinforcements in the stop block.
The simple beam bridge with the stop blocks is simplified into a spring-mass model, the self-vibration period, the stop block stiffness (the steel plate and the stop blocks with stiffening ribs behind the steel plate) and the initial clearance of the bridge are used as parameters to be analyzed, three seismic waves E1Centro, Northridge and Farlcfield are selected to be analyzed, and the clearance is suggested to be 3 mm. The effect of bridge stops across seismic zones was analyzed, and three cases were studied: there are no stops, linear elastic stops and non-linear stops. Considering that the existence of the stop blocks changes the stress, when the stop blocks exist and the stop blocks do not exist, the displacement and stress conditions of the abutment and the pier are different, the effect of neglecting the stop blocks is not necessarily safe, the analysis is proposed to be carried out on the two conditions of the linear elastic stop blocks and the non-stop blocks respectively, and the obtained result can provide an upper limit and a lower limit for the condition of the non-linear stop blocks.
Scholars at home and abroad carry out a large amount of researches to the concrete dog, but most of researches are concentrated on the anti-seismic design of the dog self, namely, the collision force of resisting the beam by utilizing the reinforcement, rigidity and the like of the concrete dog self, and the form of filling the rubber gasket is also researched partially to reduce the seismic damage of the dog, but the rubber gasket cannot consume energy, can only reduce the collision rigidity, increases the conversion efficiency of the collision kinetic energy, and the essence still needs the dog to consume energy.
The presence of metallic aluminum foam will completely change this. Foam metal refers to a special metal material containing foam pores. Through the unique structural characteristics of the foam metal, the foam metal has a series of good advantages of small density, good heat insulation performance, good sound insulation performance, capability of absorbing electromagnetic waves and the like. The foam metal has higher porosity and larger pore size. Cushioning protection is also one of the main uses of metal foam, which must have the ability to absorb energy while keeping the maximum force on the protected object below the damage causing limit. Porous metal foam materials may be well suited for such applications. By controlling its relative density, the strength of the metal foam can be adjusted over a wide range. In addition, the material can bear great compression strain under constant stress, so that great amount of energy is absorbed without producing high stress.
Foamed metal aluminium has been applied to car, cabin, lathe etc. relevant field at present, but the civil engineering field such as applying building structure at present has not yet studied, and the utility model discloses take the place of starting from the bridge dog, really accomplish the device of complete protection and protection concrete dog.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve traditional bridge anticollision dog and can't additionally consume energy in the earthquake, the concrete dog can't resist impact load power consumption effect, and the damping distributes unevenly, and is poor from the recovery ability to lead to the concrete dog to take place serious destruction in the earthquake, and then lead to bridge superstructure to take place the problem of serious destruction, for this, the utility model provides a foam metal strengthens bridge anticollision dog, the utility model has the characteristics of the environmental protection, stability is strong, and the damping distributes evenly, and the power consumption is obvious, and is strong from the recovery ability.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a foam metal strengthens bridge anticollision dog, is including arranging the internal power consumption body A of dog 1 in, arranging the power consumption body B of dog 1 inboard in.
The energy dissipation body A comprises an energy dissipation bolt 2, a bolt anchoring plate 8, an energy dissipation soft reinforcing steel bar 9 and a nut 10; the energy consumption bolt 2 is vertically inserted into the stop block 1, and the bolt anchoring plate 8 is sleeved at the bottom of the energy consumption bolt 2 and is fixed through the nut 10, so that the anchoring and energy consumption are enhanced; the inner side of the bolt anchoring plate 8 is provided with a transverse energy-consuming soft steel bar 9; the inner side of the energy consumption soft reinforcing steel bar 9 is connected with the common reinforcing steel bar.
The energy dissipation body B comprises a thin rubber cushion layer 3, a fixing bolt 4, a foam metal layer 5, a thin steel plate 6 and a shape memory alloy spring body 7; the thin rubber cushion layer 3 and the thin steel plate 6 are vertically arranged in pairs, the thin steel plate 6 is positioned on the inner side of the thin rubber cushion layer 3, and a foam metal layer 5 is filled in a gap between the thin steel plates 6; a shape memory alloy spring body 7 is inserted in the foam metal layer 5; the fixing bolt 4 transversely penetrates through the thin rubber cushion layer 3 and the thin steel plate 6 and then is screwed into the inner side of the stop block 1; the foam metal layer 5 and the shape memory alloy spring body 7 are used for dissipating energy, the shape memory alloy spring body 7 is also used for recovering the shapes of the foam metal layer 5 and the shape memory alloy spring body 7, the thin steel plate 6 is used for fixing the foam metal layer 5 and the shape memory alloy spring body 7, and the thin rubber cushion layer 3 is used for corrosion prevention; the thin rubber cushion layer 3 and the thin steel plate 6 are bonded by industrial glue.
The utility model discloses still have following additional technical characterstic:
as the utility model discloses technical scheme further specifically optimizes: the energy consumption bolt 2 is a long and thin bolt, the upper portion of the energy consumption bolt is a square nut head, the energy consumption bolt is evenly distributed in the middle of the stop block, the diameter and the number of the energy consumption bolt 2 are determined according to the size of a bridge, the general diameter is not less than 25mm, the length of the energy consumption bolt 2 exceeds the bottom surface of the inner side of the stop block 1, and the exceeding distance is at least 12 times of the diameter of the energy consumption bolt 2.
As the utility model discloses technical scheme further specifically optimizes: the bolt anchoring plate 8 and the energy-consuming soft steel bar 9 are arranged in the cover beam 11 and at the lower part of the stop block 1 and are mainly used for anchoring the energy-consuming bolt 2; the thickness of the bolt anchoring plate 8 is 1/2 of the diameter of the bolt, the length of the bolt anchoring plate is the same as that of the stop block 1, and the width of the bolt anchoring plate is 1/2-2/3 of the width of the stop block 1; the bolt anchoring plate 8 is arranged in the cover beam 11 and keeps the horizontal direction; the diameter of the energy consumption soft steel bar 9 is the same as that of the energy consumption bolt 2, and the length of the energy consumption soft steel bar is 25 times that of the energy consumption bolt 2; the left end of the energy-consuming soft reinforcing steel bar 9 is welded on the bolt anchoring plate, and the right end of the energy-consuming soft reinforcing steel bar is bound with other common reinforcing steel bars.
As the utility model discloses technical scheme further specifically optimizes: the thin rubber cushion layer 3 is a rubber cushion layer with the thickness of 2mm, an inner layer rubber cushion of the thin rubber cushion layer 3 is adhered to the inner side of the stop block 1 through industrial glue, then a thin steel plate 6 with the thickness of 2mm is coated on the inner side of the stop block, 4 bolt holes are formed in four corners of the thin steel plate 6, and the thin rubber cushion layer 3 and the thin steel plate 6 are fixed on the stop block 1 through the bolt holes by fixing bolts 4; the diameter of the fixing bolt 4 is 14-25 mm, and the nut is a thin nut with the thickness of 2mm so as not to influence the deformation of the foam metal layer 5 and the shape memory alloy spring body 7.
As the utility model discloses technical scheme further specifically optimizes: the foam metal layer 5 covers the side face of the whole block 1, the thickness of the foam metal layer is 10-50 mm, the actual thickness of the foam metal layer is determined according to the specific size of the bridge and the size of the block 1, the porosity of the foam metal layer is generally selected to be small, and the foam metal layer has higher rigidity and energy consumption capability.
As the utility model discloses technical scheme further specifically optimizes: the foam metal layer 5 comprises an outer thin steel plate and an inner thin rubber pad, and the thickness of the outer thin steel plate is the same as that of the inner thin rubber pad.
As the utility model discloses technical scheme further specifically optimizes: the shape memory alloy spring body 7 is a combined device which is provided with a memory alloy spiral body, is formed by sintering a memory alloy wire and is provided with fixing plates at two ends; the memory alloy spiral body is connected with the fixing plate in an energy storage spot welding mode; the thickness of the shape memory alloy spring body 7 is the same as that of the foam metal layer 5, two ends of the shape memory alloy spring body are fixed on the thin steel plates 6 at two ends in an adhesive mode, the diameter of the shape memory alloy spring body 7 is 3-10 mm, and the shape memory alloy spring body needs to be matched and coordinated with the thickness of the foam metal layer 5; the number of the shape memory alloy spring bodies 7 is set to be 9, 16 or 25 according to the size of the bridge and the stop block 1, and the shape memory alloy spring bodies are uniformly distributed.
Compared with the prior art, the utility model, its advantage lies in:
the method has the advantages that: the utility model discloses have multistage power consumption effect, the earthquake comes temporarily, and roof beam body accessible compression foam metal layer and shape memory alloy spring body carry out the first order power consumption, when vibration or load are too big, when the unable memory alloy spring body that compresses, the anchor carries out the second festival section power consumption through warping in the inside power consumption soft reinforcing bar of structure, and when the load was big again, the power consumption bolt also will carry out the third part power consumption.
The method has the advantages that: the utility model discloses have the effect of resisting the impact load, at the macroseism in-process, because of foam metal layer and shape memory alloy spring body, can resist the impact load who comes from the roof beam end and transmit through a large amount of energies of deformation absorption, avoid because of the structure receives the too big damage that causes the structure of impact load vibration.
The method has the advantages that: the utility model discloses have the self-resuming effect, the utility model discloses foam metal layer and shape memory alloy spring body, after shock insulation layer and shape memory alloy spring body absorbed energy, shape memory alloy spring body can freely resume the initial stage, also can drive foam metal layer through the steel sheet and resume certain shape simultaneously, has had stronger durability for traditional shock insulation dog.
The advantages are that: the utility model has the characteristics of the damping distributes evenly, and shape memory alloy spring body is in evenly distributed in the foam metal layer, can provide the energy that supports and absorption vibration production effectively.
The advantages are that: the utility model has the characteristics of easily change, in the big earthquake that does not arouse inside mild steel of dog and bolt destruction, only outside shock insulation body takes place under the deformation that can't resume, changes through changing the part.
The method has the advantages that: the utility model discloses but direct mount is at the bridge dog, simple installation, material environmental protection, have multistage shock attenuation power consumption effect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a partially enlarged schematic view of FIG. 1;
FIG. 4 is a schematic structural view of the bolt anchor plate 8 and the energy dissipating reinforcing steel bar 9;
FIG. 5 is a schematic view of the structure of FIG. 3 taken along the line A-A;
FIG. 6 is a schematic top view of the member 7;
fig. 7 is a side view of the member 7.
Description of reference numerals: the energy-consuming soft steel plate comprises a stop block 1, an energy-consuming bolt 2, a thin rubber cushion layer 3, a fixing bolt 4, a foam metal layer 5, a thin steel plate 6, a shape memory alloy spring body 7, a bolt anchoring plate 8, an energy-consuming soft steel bar 9, a nut 10 and a cover beam 11.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings, in order that the present disclosure may be more completely understood, and the scope of the present disclosure may be fully conveyed to those skilled in the art. While the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure is not limited to the embodiments set forth herein.
The utility model provides a foam metal strengthens bridge anticollision dog, is including arranging the internal power consumption body A of dog 1 in, arranging the power consumption body B of dog 1 inboard in.
The energy dissipation body A comprises an energy dissipation bolt 2, a bolt anchoring plate 8, an energy dissipation soft reinforcing steel bar 9 and a nut 10; the energy consumption bolt 2 is vertically inserted into the stop block 1, and the bolt anchoring plate 8 is sleeved at the bottom of the energy consumption bolt 2 and is fixed through the nut 10, so that the anchoring and energy consumption are enhanced; the inner side of the bolt anchoring plate 8 is provided with a transverse energy-consuming soft steel bar 9; the inner side of the energy consumption soft reinforcing steel bar 9 is connected with the common reinforcing steel bar.
The energy dissipation body B comprises a thin rubber cushion layer 3, a fixing bolt 4, a foam metal layer 5, a thin steel plate 6 and a shape memory alloy spring body 7.
The thin rubber cushion layer 3 and the thin steel plate 6 are vertically arranged in pairs, the thin steel plate 6 is positioned on the inner side of the thin rubber cushion layer 3, and a foam metal layer 5 is filled in a gap between the thin steel plates 6; a shape memory alloy spring body 7 is inserted in the foam metal layer 5; the fixing bolt 4 transversely penetrates through the thin rubber cushion layer 3 and the thin steel plate 6 and then is screwed into the inner side of the stop block 1.
The foam metal layer 5 and the shape memory alloy spring body 7 are used for dissipating energy, the shape memory alloy spring body 7 is also used for recovering the shapes of the foam metal layer 5 and the shape memory alloy spring body 7, the thin steel plate 6 is used for fixing the foam metal layer 5 and the shape memory alloy spring body 7, and the thin rubber cushion layer 3 is used for corrosion prevention; the thin rubber cushion layer 3 and the thin steel plate 6 are bonded by industrial glue;
the energy consumption bolt 2 is a long and thin bolt, the upper portion of the energy consumption bolt is a square nut head, the energy consumption bolt is evenly distributed in the middle of the stop block, the diameter and the number of the energy consumption bolt 2 are determined according to the size of a bridge, the general diameter is not less than 25mm, the length of the energy consumption bolt 2 exceeds the bottom surface of the inner side of the stop block 1, and the exceeding distance is at least 12 times of the diameter of the energy consumption bolt 2.
The bolt anchoring plate 8 and the energy-consuming soft steel bar 9 are arranged in the cover beam 11 and at the lower part of the stop block 1 and are mainly used for anchoring the energy-consuming bolt 2; the thickness of the bolt anchoring plate 8 is 1/2 of the diameter of the bolt, the length of the bolt anchoring plate is the same as that of the stop block 1, and the width of the bolt anchoring plate is 1/2-2/3 of the width of the stop block 1; the bolt anchoring plate 8 is arranged in the cover beam 11 and keeps the horizontal direction; the diameter of the energy consumption soft steel bar 9 is the same as that of the energy consumption bolt 2, and the length of the energy consumption soft steel bar is 25 times that of the energy consumption bolt 2; the left end of the energy-consuming soft reinforcing steel bar 9 is welded on the bolt anchoring plate, and the right end of the energy-consuming soft reinforcing steel bar is bound with other common reinforcing steel bars.
The thin rubber cushion layer 3 is a rubber cushion layer with the thickness of 2mm, an inner layer rubber cushion of the thin rubber cushion layer 3 is adhered to the inner side of the stop block 1 through industrial glue, then a thin steel plate 6 with the thickness of 2mm is coated on the inner side of the stop block, 4 bolt holes are formed in four corners of the thin steel plate 6, and the thin rubber cushion layer 3 and the thin steel plate 6 are fixed on the stop block 1 through the bolt holes by fixing bolts 4; the diameter of the fixing bolt 4 is 14-25 mm, and the nut is a thin nut with the thickness of 2mm so as not to influence the deformation of the foam metal layer 5 and the shape memory alloy spring body 7.
The foam metal layer 5 covers the side face of the whole block 1, the thickness of the foam metal layer is 10-50 mm, the actual thickness of the foam metal layer is determined according to the specific size of the bridge and the size of the block 1, the porosity of the foam metal layer is generally selected to be small, and the foam metal layer has higher rigidity and energy consumption capability.
The foam metal layer 5 comprises an outer thin steel plate and an inner thin rubber pad, and the thickness of the outer thin steel plate is the same as that of the inner thin rubber pad.
The shape memory alloy spring body 7 is a combined device which is provided with a memory alloy spiral body, is formed by sintering a memory alloy wire and is provided with fixing plates at two ends; the memory alloy spiral body is connected with the fixing plate in an energy storage spot welding mode; the thickness of the shape memory alloy spring body 7 is the same as that of the foam metal layer 5, two ends of the shape memory alloy spring body are fixed on the thin steel plates 6 at two ends in an adhesive mode, the diameter of the shape memory alloy spring body 7 is 3-10 mm, and the shape memory alloy spring body needs to be matched and coordinated with the thickness of the foam metal layer 5; the number of the shape memory alloy spring bodies 7 is set to be 9, 16 or 25 according to the size of the bridge and the stop block 1, and the shape memory alloy spring bodies are uniformly distributed.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the above description, in combination with the drawings in the embodiments of the present invention, clearly and completely describes the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (7)

1. The foam metal reinforced bridge anti-collision stop block is characterized by comprising an energy dissipation body A arranged inside the stop block (1) and an energy dissipation body B arranged on the inner side of the stop block (1);
the energy dissipation body A comprises an energy dissipation bolt (2), a bolt anchoring plate (8), an energy dissipation soft steel bar (9) and a nut (10); the energy-consuming bolt (2) is vertically inserted into the stop block (1), and the bolt anchoring plate (8) is sleeved at the bottom of the energy-consuming bolt (2) and fixed through the nut (10) to strengthen anchoring and energy consumption; the inner side of the bolt anchoring plate (8) is provided with a transverse energy-consuming soft steel bar (9); the inner side of the energy-consuming soft reinforcing steel bar (9) is connected with a common reinforcing steel bar;
wherein, the energy dissipation body B comprises a thin rubber cushion layer (3), a fixing bolt (4), a foam metal layer (5), a thin steel plate (6) and a shape memory alloy spring body (7); the thin rubber cushion layer (3) and the thin steel plate (6) are vertically arranged in pairs, the thin steel plate (6) is positioned on the inner side of the thin rubber cushion layer (3), and the thin rubber cushion layer (3) and the thin steel plate (6) are bonded through industrial glue; a foam metal layer (5) is filled in the gap between the thin steel plates (6); a shape memory alloy spring body (7) is inserted in the foam metal layer (5); the fixing bolt (4) transversely penetrates through the thin rubber cushion layer (3) and the thin steel plate (6) and then is screwed into the inner side of the stop block (1).
2. The foam metal reinforced bridge bump stop of claim 1, wherein: the energy dissipation bolt (2) is a long and thin bolt, and the upper part of the energy dissipation bolt is a square nut head; the energy dissipation bolts (2) are uniformly distributed in the middle of the stop block.
3. The foam metal reinforced bridge bump stop of claim 1, wherein: the bolt anchoring plate (8) and the energy-consuming soft steel bar (9) are arranged in the cover beam (11) and at the lower part of the stop block (1) and are used for anchoring the energy-consuming bolt (2); the bolt anchoring plate (8) is arranged in the cover beam (11); the left end of the energy-consuming soft reinforcing steel bar (9) is welded on the bolt anchoring plate, and the right end of the energy-consuming soft reinforcing steel bar is connected with the common reinforcing steel bar in a binding manner.
4. The foam metal reinforced bridge bump stop of claim 1, wherein: the inner rubber pad of the thin rubber cushion layer (3) is adhered to the inner side of the stop block (1) through industrial glue and is coated with a thin steel plate (6); four corners of the thin steel plate (6) are provided with 4 bolt holes, and the thin rubber cushion layer (3) and the thin steel plate (6) are fixed on the stop block (1) through the bolt holes by the fixing bolts (4).
5. The foam metal reinforced bridge bump stop of claim 1, wherein: the foam metal layer (5) covers the whole side surface of the block (1).
6. The foam metal reinforced bridge bump stop of claim 1, wherein: the foam metal layer (5) comprises an outer thin steel plate and an inner thin rubber pad, and the thickness of the outer thin steel plate is the same as that of the inner thin rubber pad.
7. The foam metal reinforced bridge bump stop of claim 1, wherein: the shape memory alloy spring body (7) is a combined device which is provided with a memory alloy spiral body, is formed by firing memory alloy wires and is provided with fixing plates at two ends; the memory alloy spiral body is connected with the fixing plate in an energy storage spot welding mode; the thickness of the shape memory alloy spring body (7) is the same as that of the foam metal layer (5), and two ends of the shape memory alloy spring body are fixed on the thin steel plates (6) at two ends in an adhesive mode.
CN202021238965.1U 2020-06-30 2020-06-30 Foam metal reinforced bridge anti-collision stop block Expired - Fee Related CN212335745U (en)

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CN202021238965.1U CN212335745U (en) 2020-06-30 2020-06-30 Foam metal reinforced bridge anti-collision stop block

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Application Number Priority Date Filing Date Title
CN202021238965.1U CN212335745U (en) 2020-06-30 2020-06-30 Foam metal reinforced bridge anti-collision stop block

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114351570A (en) * 2022-01-27 2022-04-15 北京交通大学 Transverse equivalent TMD damping control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114351570A (en) * 2022-01-27 2022-04-15 北京交通大学 Transverse equivalent TMD damping control system

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