CN211368329U - Combined seismic mitigation and isolation system with multi-level seismic fortification function - Google Patents
Combined seismic mitigation and isolation system with multi-level seismic fortification function Download PDFInfo
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- CN211368329U CN211368329U CN201922064241.3U CN201922064241U CN211368329U CN 211368329 U CN211368329 U CN 211368329U CN 201922064241 U CN201922064241 U CN 201922064241U CN 211368329 U CN211368329 U CN 211368329U
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- 238000002955 isolation Methods 0.000 title claims abstract description 37
- 230000000116 mitigating effect Effects 0.000 title claims abstract description 14
- 230000035939 shock Effects 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a combined seismic mitigation and isolation system with multi-level seismic fortification function, which comprises a main beam, a capping beam or a pier, a stop block, a seismic mitigation and isolation support, a large anchor bolt, a damper and a pre-buried slotted hole; the shock absorption and isolation support is arranged at the top of the capping beam or the pier, the damper is arranged between the main beam and the capping beam along the longitudinal bridge direction, or the damper is arranged between the main beam and the pier along the longitudinal bridge direction, the pre-buried slotted hole is arranged at the bottom of the main beam, and a certain non-working length is reserved along the bridge direction and the transverse bridge direction for embedding a large anchor bolt; the lower part of the large anchor bolt is fixed on the bent cap or the pier, the upper part of the large anchor bolt is embedded into the pre-buried slotted hole of the main beam, and the stop blocks are arranged at two ends of the top of the bent cap or the pier. The utility model discloses under the protection of the multi-level function of seting up defences of this system, can improve the anti-seismic performance of the bridge construction as lifeline engineering, guarantee the unblocked of life line after shaking, improve the efficiency of rescuing and rescuing, the loss of lives and property that the secondary disaster that significantly reduces brought.
Description
Technical Field
The utility model belongs to the technical field of the shock insulation is subtracted to the bridge, in particular to can realize that different levels earthquake moves the input, the combination of the continuous beam bridge seismic effect of long-span concrete of resistance subtracts the shock insulation system, is applicable to the continuous beam bridge of long-span concrete.
Background
China is one of the earthquake-resistant countries in the world, and the earthquake-resistant and disaster-proof forms are very severe. The bridge is an important component of the life line engineering, and the earthquake resistance of the bridge is widely concerned. The seismic isolation and reduction technology reduces the seismic response of the main body structure by prolonging the structure period and increasing the structure damping, and can achieve a higher seismic fortification target. At present, most of common seismic isolation and reduction technologies adopt single seismic measures such as seismic isolation supports or dampers and the like, so that the requirements of different seismic dynamic strengths cannot be met, and particularly, effective seismic measures are lacked for ultra-strong earthquakes exceeding the E2 seismic action. Particularly, a long-span concrete continuous beam bridge has the requirements of large-tonnage bearing capacity and displacement, and the anti-seismic problem cannot be solved by simply adopting a shock insulation support or a damper.
Therefore, anti-seismic measures meeting different seismic strength requirements are urgently needed to be provided for the long-span concrete continuous beam bridge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned prior art not enough, provide a combination with many levels is accurate antidetonation and is establish fortification function and subtract shock insulation system, this combination subtracts shock insulation system can satisfy under little shake, well shake, big shake, different ground vibrations such as macroseism, strong shake, stride the antidetonation demand of bridge greatly.
The utility model adopts the technical proposal that: a combined seismic mitigation and isolation system with a multi-level seismic fortification function comprises a main beam, a capping beam or a pier, a stop block, a seismic mitigation and isolation support, a large anchor bolt, a damper and an embedded slot;
the seismic isolation and reduction support is arranged at the top of the bent cap or the pier, and is mainly used for bearing vertical load and horizontal load and transmitting the supporting counter force of the upper structure; the damper is arranged between the main beam and the capping beam along the longitudinal bridge direction, or the damper is arranged between the main beam and the bridge pier along the longitudinal bridge direction, and mainly dissipates the action of earthquake along the bridge direction; the embedded slotted hole is arranged at the bottom of the main beam, and a certain non-working length is reserved in the forward bridge direction and the transverse bridge direction for embedding a large anchor bolt; the lower part of the large anchor bolt is fixed on the bent cap or the pier, and the upper part of the large anchor bolt is embedded into the pre-buried slotted hole of the main beam and mainly plays a role in horizontal earthquake; the stop blocks are arranged at two ends of the top of the bent cap or the pier and are used for realizing transverse bridge direction limiting.
The utility model discloses a theory of operation: when the E1 standard earthquake acts, the earthquake action is resisted by the seismic isolation support; when the E2 level earthquake acts, the anti-seismic support, the large anchor bolt and the stop block resist the transverse bridge earthquake together, and the anti-seismic support and the damper resist the longitudinal bridge earthquake together; when the ultra-strong earthquake exceeding the E2 level earthquake acts, the anti-seismic support, the large anchor bolt and the stop block resist the transverse bridge earthquake together, and the anti-seismic support, the damper and the large anchor bolt resist the longitudinal bridge earthquake together.
Preferably, the shock absorption and isolation support can select different types of supports according to the actual shock resistance requirement of the bridge structure, and the supports comprise a lead core rubber support, a natural rubber support, a high-damping rubber support, a friction pendulum support and other shock absorption and isolation supports.
Preferably, the dampers can be viscous dampers or steel dampers, and the number of the dampers and specific parameters of the dampers can be determined according to specific earthquake requirements of the bridge structure.
Preferably, the material of the large anchor bolt can be steel, the diameter of the anchor bolt can be determined through calculation according to the anti-seismic requirement, and one or more anchor bolts can be arranged according to the requirement.
Preferably, the stopper may be a concrete stopper or a steel stopper, and may be disposed at both ends of the top of the capping beam when the capping beam is provided, or may be disposed at a middle position of the top of the pier when the capping beam is not provided.
Has the advantages that: the utility model discloses under the protection of the multi-level function of seting up defences of this system, can improve the anti-seismic performance of the bridge construction as lifeline engineering, guarantee the unblocked of life line after shaking, improve the efficiency of rescuing and rescuing, the loss of lives and property that the secondary disaster that significantly reduces brought.
Drawings
FIG. 1 is a schematic diagram of the arrangement along the bridge direction of the combined seismic isolation and reduction system provided by the present invention;
FIG. 2 is a transverse bridge layout diagram of a large combined seismic mitigation and isolation system provided by the utility model;
fig. 3 is a plan view of the combined seismic isolation and reduction system provided by the utility model.
In the figure: the method comprises the following steps of 1-main beam, 2-cover beam, 3-stop block, 4-seismic isolation and reduction support, 5-large anchor bolt, 6-viscous damper and 7-embedded slotted hole.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings and the detailed description.
Example 1:
as shown in fig. 1-3, this embodiment describes an embodiment (with a capping beam) in which the stoppers in the combined seismic mitigation and isolation system are placed at both ends of the capping beam, and includes a main beam 1, a capping beam 2, stoppers 3, seismic mitigation and isolation supports 4, large-sized anchor bolts 5, viscous dampers 6, and pre-buried slots 7. The seismic mitigation and isolation support 4 is arranged at the top of the cover beam 2, mainly bears vertical load and horizontal load and transmits the supporting counter force of an upper structure; the viscous damper 6 is arranged between the main beam 1 and the cover beam 2 along the longitudinal bridge direction and mainly dissipates the earthquake action along the bridge direction; the lower part of the large anchor bolt 5 is fixed on the bent cap 2, and the upper part of the large anchor bolt is embedded into the pre-buried slotted hole 7 of the main beam 1 and mainly plays a role in horizontal earthquake; the stop blocks 3 are arranged at two ends of the top of the bent cap 2 and are used for realizing transverse bridge limiting; the pre-buried slotted hole 7 is arranged at the bottom of the main beam 1, and a certain non-working length is reserved along the bridge direction and the transverse bridge direction for embedding the large anchor bolt 5.
Subtract isolation bearing 4 can select the support of different grade type according to bridge structures's actual antidetonation demand, including lead core rubber bearing, natural rubber bearing, high damping rubber bearing, friction pendulum support and other subtract isolation bearing. The material of the large anchor bolt 5 can be steel, the diameter of the anchor bolt can be determined by calculation according to the anti-seismic requirement, and one or more anchor bolts can be arranged according to the requirement. The stop 3 can be a concrete stop or a steel stop, and is arranged at two ends of the top of the capping beam when the capping beam is arranged, and can be arranged in the middle of the top of the pier when the capping beam is not arranged.
The working principle of the invention is as follows: when the E1 standard earthquake acts, the earthquake action is resisted by the seismic isolation and reduction support 4; e2 horizontal bridge direction earthquake is resisted by the shock absorption and isolation support 3, the large anchor bolt 5 and the stop block 3 together when the level earthquake acts, and the longitudinal bridge direction earthquake is resisted by the shock absorption and isolation support 4 and the viscous damper 6 together; when the ultra-strong earthquake exceeding the E2 level earthquake acts, the transverse bridge earthquake is resisted by the shock absorption and isolation support 4, the large anchor bolt 5 and the stop block 3, and the longitudinal bridge earthquake is resisted by the shock absorption and isolation support 4, the viscous damper 6 and the large anchor bolt 5. When the system is used for earthquake actions at different levels (strength), the damping of the structure is greatly increased, the acceleration reaction and the displacement reaction of the main beam are reduced, the pier bottom internal force of the fixed pier is greatly reduced, and the integral cooperative stress of the continuous beam bridge is facilitated.
Example 2:
the embodiment has introduced the combination and has subtracted among the shock insulation system the dog and place the implementation scheme (do not have the bent cap) in the middle of the pier top, including girder, pier, dog, subtract shock insulation support, large-scale crab-bolt, viscous damper, pre-buried slotted hole. The seismic isolation and reduction support is arranged at the top of the pier, and is mainly used for bearing vertical loads and horizontal loads and transmitting the supporting counter force of an upper structure; the viscous damper is arranged between the main beam and the bridge pier along the longitudinal bridge direction and mainly dissipates the action of earthquake along the bridge direction; the lower part of the large anchor bolt is fixed on the bridge pier, and the upper part of the large anchor bolt is embedded into the pre-buried slotted hole of the main beam and mainly plays a role in horizontal earthquake; the stop block is arranged in the middle of the top of the bridge pier and is used for realizing transverse bridge direction limiting; the pre-buried slotted hole sets up in the girder bottom, is in same direction as bridge direction and horizontal bridge to reserving certain inoperative length, supplies the crab-bolt to shift.
The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art and are intended to be within the scope of the present principles and the spirit of the invention.
Claims (5)
1. The utility model provides a combination subtracts shock insulation system with many levels antidetonation fortification function which characterized in that: the shock absorption and isolation device comprises a main beam, a capping beam or a pier, a stop block, a shock absorption and isolation support, a large anchor bolt, a damper and an embedded slot;
subtract isolation bearing and arrange at bent cap or pier top, the attenuator is along indulging the bridge to setting up between girder and bent cap, perhaps the attenuator is along indulging the bridge to setting up between girder and pier, the pre-buried slotted hole sets up in the girder bottom, is supplying the out-of-operation length of large-scale crab-bolt embedding in the same direction as the bridge to with horizontal bridge to reserving, the lower part of large-scale crab-bolt is fixed on bent cap or pier, during the pre-buried slotted hole of upper portion embedding girder, the dog sets up at bent cap or pier top both ends.
2. The combined seismic mitigation and isolation system with the multi-level seismic fortification function according to claim 1, wherein: the seismic isolation and reduction support is a lead core rubber support, a natural rubber support, a high-damping rubber support or a friction pendulum support.
3. The combined seismic mitigation and isolation system with the multi-level seismic fortification function according to claim 1, wherein: the damper is a viscous damper or a steel damper.
4. The combined seismic mitigation and isolation system with the multi-level seismic fortification function according to claim 1, wherein: the material of the large anchor bolt is steel.
5. The combined seismic mitigation and isolation system with the multi-level seismic fortification function according to claim 1, wherein: the chock block is a concrete chock block or a steel chock block, is arranged at two ends of the top of the bent cap when the bent cap is arranged, and is arranged in the middle of the top of the pier when the bent cap is not arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922064241.3U CN211368329U (en) | 2019-11-26 | 2019-11-26 | Combined seismic mitigation and isolation system with multi-level seismic fortification function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922064241.3U CN211368329U (en) | 2019-11-26 | 2019-11-26 | Combined seismic mitigation and isolation system with multi-level seismic fortification function |
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| CN211368329U true CN211368329U (en) | 2020-08-28 |
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| CN201922064241.3U Active CN211368329U (en) | 2019-11-26 | 2019-11-26 | Combined seismic mitigation and isolation system with multi-level seismic fortification function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356028A (en) * | 2021-06-22 | 2021-09-07 | 天津市政工程设计研究总院有限公司 | Shock absorption and isolation structure of hybrid energy consumption bridge |
| CN113833149A (en) * | 2021-10-18 | 2021-12-24 | 湖南大学 | Tuned inerter damping support |
| CN114645506A (en) * | 2022-02-25 | 2022-06-21 | 中铁十八局集团有限公司 | Bridge structure with prevent roof beam function that falls |
-
2019
- 2019-11-26 CN CN201922064241.3U patent/CN211368329U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356028A (en) * | 2021-06-22 | 2021-09-07 | 天津市政工程设计研究总院有限公司 | Shock absorption and isolation structure of hybrid energy consumption bridge |
| CN113833149A (en) * | 2021-10-18 | 2021-12-24 | 湖南大学 | Tuned inerter damping support |
| CN113833149B (en) * | 2021-10-18 | 2023-02-03 | 湖南大学 | Tuned inerter damping support |
| CN114645506A (en) * | 2022-02-25 | 2022-06-21 | 中铁十八局集团有限公司 | Bridge structure with prevent roof beam function that falls |
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