CN214423135U - Multistage protection prestressing force assembled dog - Google Patents
Multistage protection prestressing force assembled dog Download PDFInfo
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- CN214423135U CN214423135U CN202120204621.7U CN202120204621U CN214423135U CN 214423135 U CN214423135 U CN 214423135U CN 202120204621 U CN202120204621 U CN 202120204621U CN 214423135 U CN214423135 U CN 214423135U
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Abstract
The utility model discloses a multistage protection prestress assembly type stop block; the device comprises a prestressed reinforcement anchoring pier head, prestressed reinforcements, an assembled baffle block body, a fixing bolt, angle steel, spiral reinforcements, a steel base plate, a single-hole working anchor ring, a working clamping piece and a cover beam; the assembled stop block body is fixed on the bent cap; prestressed steel bars are arranged inside the assembled baffle block body and the cover beam, and prestressed steel bar anchoring pier heads are arranged at the upper ends of the prestressed steel bars; and the lower part of the prestressed reinforcement is provided with a spiral reinforcement. The utility model aims to solve the problems that the traditional bridge anti-collision stopper cannot additionally consume energy in an earthquake, the concrete stopper cannot resist the impact load energy consumption effect, the damping distribution is uneven, and the self-recovery capability is poor, so that the concrete stopper is seriously damaged in the earthquake, and further the upper structure of the bridge is seriously damaged; the utility model has the characteristics of environmental protection, stability are strong, the damping distributes evenly, the power consumption is obvious, self-resuming ability is strong.
Description
Technical Field
The utility model relates to a damping protection field which can be widely applied to building houses, lifeline engineering, medical equipment and the like; and more particularly to a multi-stage protective pre-stressed assembled stop.
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.
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 of the bridge, the stop block stiffness (the steel plate and the stop blocks with reinforcing ribs arranged behind the steel plate) and the initial gap are used as parameters to be analyzed, three seismic waves E1Centro, Northridge and Farlcfield are selected to be analyzed, and the gap 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. 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.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned insufficiency, the utility model provides a multistage protection prestressing force assembled dog here. 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 multistage protection prestressing force assembled 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 self-recovery ability is strong.
The utility model is realized by constructing a multi-stage protection prestress assembly type stop block; the multistage protection prestress assembly type stop block comprises a prestress steel bar anchoring pier head, prestress steel bars, an assembly type stop block body, a fixing bolt, angle steel, spiral steel bars, a steel base plate, a single-hole working anchor ring, a working clamping piece and a cover beam;
the assembled stop block body is fixed on the bent cap;
prestressed steel bars are arranged inside the assembled baffle block body and the cover beam, and prestressed steel bar anchoring pier heads are arranged at the upper ends of the prestressed steel bars; and the lower part of the prestressed reinforcement is provided with a spiral reinforcement.
Preferably, the lower end part of the prestressed reinforcement is fixed through a steel backing plate, a single-hole working anchor ring and a working clamping piece.
Preferably, the assembled stop block body is fixed on the bent cap through angle steel, and the angle steel is fixed with the assembled stop block body and the bent cap through fixing bolts respectively.
Preferably, the left side and the right side of the assembled baffle block body are respectively provided with an angle steel.
Preferably, a concave cavity for accommodating the angle steel is formed on the contact inner side of the assembled baffle block body and the cover beam.
The utility model has the advantages of as follows: the utility model provides a multistage protection prestress assembly type stop block, compared with the prior art, the utility model has the following advantages and effects;
its 1, 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 mild steel of structure, and when the load was big again, the bolt will also carry out the third part power consumption.
And 2, 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 be through a large amount of energies of deformation absorption, resist the impact load who comes from the roof beam end and transmit, avoid because of the structure receives the too big damage that causes the structure of impact load vibration.
It 3, 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 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.
And 4, 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.
Its 5, 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.
It 6, the utility model discloses but the direct mount is at the bridge dog, simple installation, material environmental protection, have multistage shock attenuation power consumption effect.
The practical technology of the foam metal stop block can generate great economic benefit, promote the application of foam metal in a large amount, greatly increase the safety of the bridge and have obvious indirect economic efficiency for other major earthquake monitoring and defense areas, can be a scientific basis for the earthquake resistance design of common medium and small bridges and even the design of other types of bridges, and can add tiles for the smooth implementation of disaster prevention and reduction tasks and the bricking and bricking career of the disaster prevention and reduction.
Drawings
FIG. 1 is a schematic structural view of a multi-stage protective pre-stressed assembled stop block;
FIG. 2 is a top view of a multi-stage pre-stressed fabricated stop block structure;
FIG. 3 is a left side view of a multi-stage protective pre-stressed fabricated stop block configuration;
FIG. 4 is a view of a multi-stage protective pre-stressed assembled chock at an isometric angle of 45 degrees;
fig. 5 is a view structure of an isometric 135 degree angle of a multi-stage protection pre-stress assembled block.
Wherein: 1. prestressed reinforcement anchor pier nose, 2, prestressed reinforcement, 3, assembled retainer block, 4, fixing bolt, 5, angle steel, 6, spiral reinforcement, 7, steel backing plate, 8, haplopore work anchor ring, 9, work clamping piece, 10, bent cap.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a multistage protection prestress assembly type stop dog through improvement, as shown in figures 1-5, which can be implemented as follows; the multistage protection prestress assembly type check block comprises a prestress steel bar anchoring pier head 1, prestress steel bars 2, an assembly type check block body 3, a fixing bolt 4, angle steel 5, spiral steel bars 6, a steel base plate 7, a single-hole working anchor ring 8, a working clamping piece 9 and a cover beam 10;
the assembled baffle block body 3 is fixed on the cover beam 10;
When the multistage protection prestress assembly type check block of the utility model is implemented; the lower end part of the prestressed reinforcement 2 is fixed through a steel backing plate 7, a single-hole working anchor ring 8 and a working clamping piece 9.
When the multistage protection prestress assembly type check block of the utility model is implemented; the assembled block retaining body 3 is fixed on the bent cap 10 through an angle steel 5, and the angle steel 5 is fixed with the assembled block retaining body 3 and the bent cap 10 through a fixing bolt 4 respectively.
When the multistage protection prestress assembly type check block of the utility model is implemented; the left side and the right side of the assembled block body 3 are respectively provided with an angle steel 5.
When the multistage protection prestress assembly type check block of the utility model is implemented; a concave cavity 11 for containing angle steel is formed on the contact inner side of the assembled stop block body 3 and the cover beam 10, so that the inner angle steel can be conveniently contained.
Compared with the prior art, the utility model has the advantages of it is following and effect:
its 1, 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 mild steel of structure, and when the load was big again, the bolt will also carry out the third part power consumption.
And 2, 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 be through a large amount of energies of deformation absorption, resist the impact load who comes from the roof beam end and transmit, avoid because of the structure receives the too big damage that causes the structure of impact load vibration.
It 3, 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 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.
And 4, 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.
Its 5, 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.
It 6, the utility model discloses but the direct mount is at the bridge dog, simple installation, material environmental protection, have multistage shock attenuation power consumption effect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A multi-stage protection prestress assembly type stop block is characterized in that;
the multistage protection prestress assembly type stop block comprises a prestress steel bar anchoring pier head (1), prestress steel bars (2), an assembly type stop block body (3), a fixing bolt (4), angle steel (5), spiral steel bars (6), a steel base plate (7), a single-hole working anchor ring (8), a working clamping piece (9) and a cover beam (10);
the assembled block retaining body (3) is fixed on the cover beam (10);
prestressed reinforcements (2) are arranged inside the assembled baffle block body (3) and the bent cap (10), and the upper ends of the prestressed reinforcements (2) are provided with prestressed reinforcement anchoring pier heads (1); and the lower part of the prestressed reinforcement (2) is provided with a spiral reinforcement (6).
2. The multi-stage protective pre-stressed assembled stop of claim 1, wherein; the lower end part of the prestressed reinforcement (2) is fixed through a steel backing plate (7), a single-hole working anchor ring (8) and a working clamping piece (9).
3. The multi-stage protective pre-stressed assembled stop of claim 1, wherein; the assembled blocking body (3) is fixed on the bent cap (10) through an angle steel (5), and the angle steel (5) is fixed with the assembled blocking body (3) and the bent cap (10) through fixing bolts (4).
4. The multi-stage protective pre-stressed assembled stop of claim 1, wherein; the left side and the right side of the assembled block retaining body (3) are respectively provided with an angle steel (5).
5. The multi-stage protective pre-stressed assembled stop of claim 1, wherein; a concave cavity (11) for containing angle steel is formed on the contact inner side of the assembled block retaining body (3) and the cover beam (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120204621.7U CN214423135U (en) | 2021-01-26 | 2021-01-26 | Multistage protection prestressing force assembled dog |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120204621.7U CN214423135U (en) | 2021-01-26 | 2021-01-26 | Multistage protection prestressing force assembled dog |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214423135U true CN214423135U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120204621.7U Expired - Fee Related CN214423135U (en) | 2021-01-26 | 2021-01-26 | Multistage protection prestressing force assembled dog |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214423135U (en) |
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2021
- 2021-01-26 CN CN202120204621.7U patent/CN214423135U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |