CN113026813A - Subway station center pillar structure with shock attenuation is from restoring to throne function - Google Patents
Subway station center pillar structure with shock attenuation is from restoring to throne function Download PDFInfo
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- CN113026813A CN113026813A CN202110291025.1A CN202110291025A CN113026813A CN 113026813 A CN113026813 A CN 113026813A CN 202110291025 A CN202110291025 A CN 202110291025A CN 113026813 A CN113026813 A CN 113026813A
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- prefabricated
- center pillar
- subway station
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
Abstract
The utility model provides a subway station center pillar structure with shock attenuation is from reset function, includes prefabricated center pillar, prefabricated roof slab, and prefabricated center pillar, prefabricated roof are connected through arranging the bolt crowd at prefabricated center pillar both ends, the bolt crowd comprises high strength spring and screw thread post, and rubber is filled in the clearance between recess and the prefabricated center pillar to this improves the shock-absorbing capacity of subway station center pillar under vertical earthquake load. The groove that prefabricated roof and prefabricated bottom plate opened there is fills rubber through the clearance of rivet fixed mounting high-strength magnet along the cell wall, and the horizontal shearing force can be resisted to magnetic force between the magnet, through the magnetic force between the magnet after the earthquake to and the elasticity that the extrusion produced between the rubber, make prefabricated center pillar atress balanced, resume the state before the earthquake, the completion is from restoring to the throne. Can deal with the earthquake action in different directions and adapt to various external conditions. In addition, when the emergency such as fire disaster or water seepage occurs, the high-strength magnet can still be normally used, and the reliability of the center pillar structure is greatly improved.
Description
Technical Field
The invention relates to the technical field of subway station shock absorption, in particular to a center pillar structure with a shock absorption self-resetting function based on an assembly type subway station.
Background
With the acceleration of the urbanization process, more and more people are rushed into the city, the original city space is more and more crowded, the original ground traffic can not meet the traveling requirements of residents more and more, and under the condition, the underground rail transit represented by the subway is rapidly developed. With the development of urban underground space, taking subway stations as an example, people think that the subway stations receive the action of stratum resistance and have good earthquake resistance. However, in the earthquake of osaka spirit in 1995, the overturning damage of a big opening station becomes the first example of the overall vertical collapse of the underground structure under the action of the earthquake, and a warning clock is also sounded for the earthquake-proof safety of a subway station, so that a hot tide of earthquake response and damage of domestic and foreign scholars to the underground structure is caused. In the study of the failure mechanism of the large-scale bus station, domestic and foreign scholars have unified knowledge that the center pillar is a key component of the subway station, so that the dynamic response of the center pillar of the subway station under the action of different external forces is clear, and the optimization and improvement of the damping technology of the center pillar structure are the key points for studying the damping of the subway station.
When the earthquake takes place, the earthquake exerts huge energy to the center pillar, and subway station center pillar can produce under the combined action of horizontal seismic load and vertical seismic load and destroy, in the shock attenuation process of research subway station center pillar, need consider these factors. (patent publication No. CN106351494A discloses "a from assembled subway station flexible anti-seismic structure that restores to throne", mainly rely on the elastic restoring force of rubber support to realize from the reset function, obviously can not satisfy the center pillar shock attenuation completely and prevent the requirement of destruction under the macroseism effect, moreover, pure rubber support burns easily when the conflagration takes place and softens, has certain limitation.
Disclosure of Invention
The technical problem is as follows: the invention aims to overcome the defects in the prior art and provides a center pillar structure of a subway station, which has a simple structure and a good using effect and has a shock absorption self-resetting function.
The technical scheme is as follows: in order to achieve the purpose, the subway station center pillar structure with the shock absorption self-resetting function comprises a prefabricated center pillar arranged on a prefabricated bottom plate and a prefabricated top plate arranged on the prefabricated center pillar, wherein grooves adaptive to the prefabricated center pillar are symmetrically formed in the prefabricated top plate and the prefabricated bottom plate, the shape and the structure of the groove of the prefabricated bottom plate are the same as those of the prefabricated top plate, bolt groups with intervals are respectively arranged between the upper end and the lower end of the prefabricated center pillar in the groove and the prefabricated top plate and between the upper end and the lower end of the prefabricated center pillar in the groove and the prefabricated bottom plate, high-strength magnets with intervals fixedly connected together through rivets are respectively arranged between the left side and the right side of the prefabricated center pillar in the groove, rubber for increasing the flexibility and the dispersion of the whole station in the vertical direction is filled in the groove of the interval distance, a steel cylinder is exposed out of the groove part of the prefabricated, so that the steel cylinder, the asphalt rubber layer and the prefabricated center post form a whole.
The bolt group comprises a plurality of bolts arranged in the end face of the prefabricated middle column at intervals and a high-strength spring with high elastic modulus arranged on the bolt thread column.
And a connecting plate is arranged between the bolt threaded column and the prefabricated top plate, and a hole corresponding to the bolt threaded column is formed in the connecting plate.
The upper end and the lower end of the prefabricated center pillar are provided with bolt groups, and the positions and the number of the bolt holes formed by the bolt groups are symmetrical up and down.
The inner wall of the steel cylinder is provided with a plurality of rivets which increase the connecting force between the prefabricated center post and the steel cylinder.
The steel cylinder is evenly provided with a plurality of energy dissipation holes for dissipating energy.
Has the advantages that: due to the adoption of the technical scheme, the self-resetting device can cope with earthquake action in different directions and adapt to various external conditions, horizontal shearing force is resisted by the magnetic force between the magnets, and the prefabricated center column is balanced in stress by the magnetic force between the magnets and the elastic force generated by extrusion between the rubbers, and recovers the pre-earthquake state to complete self-resetting. When a fire disaster or water seepage occurs, the high-strength magnet can still be normally used, so that the reliability of the center pillar structure is greatly improved. Increasing the stiffness of the prefabricated center pillar. The steel cylinder on even open have a plurality of scattered can the hole, under the macroseism effect, can make steel cylinder multizone get into the plasticity state, reach the effect of power consumption.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the connection between the end of the center pillar and the precast roof panel;
FIG. 3 is a schematic sectional view of the connection between the horizontal magnet and the center pillar at the end of the center pillar;
FIG. 4 is a schematic cross-sectional view of a portion of a center pillar fitted with a sleeve structure;
fig. 5 is a schematic diagram of sleeve energy dissipation hole distribution.
In the figure: 1-prefabricated top plate, 2-prefabricated middle column, 3-bolt group, 31-high-strength spring, 32-bolt threaded column, 4-rubber, 5-rivet, 6-high-strength magnet, 7-connecting plate, 8-bolt, 9-steel cylinder, 10-rubber asphalt layer, 11-energy dissipation hole and 12-rivet.
Detailed Description
The invention will be further described with reference to examples in the drawings to which:
as shown in FIG. 1 and FIG. 2, the subway station center pillar structure with shock absorption and self-resetting functions of the present invention comprises a prefabricated center pillar 2 on a prefabricated bottom plate and a prefabricated top plate 1 on the prefabricated center pillar 2, wherein the prefabricated top plate 1 and the prefabricated center pillar 2 form a basic frame, the prefabricated top plate 1 and the prefabricated bottom plate are symmetrically provided with grooves adapted to the prefabricated center pillar 2, the shape and structure of the prefabricated bottom plate groove are the same as those of the prefabricated top plate, the upper and lower ends of the prefabricated center pillar 2 in the grooves are respectively provided with a bolt group 3 connected with the prefabricated top plate 1 and the prefabricated bottom plate at intervals, the bolt group 3 comprises a plurality of bolts 8 arranged in the end surface of the prefabricated center pillar 2 at intervals and a high-strength spring 31 with high elastic modulus arranged on a bolt threaded pillar 32, a connecting plate 7 is arranged between the bolt threaded pillar 32 and the prefabricated top plate 1, the connecting plate 7 is provided with a plurality of threaded holes corresponding to, the inner side wall of the threaded hole is in threaded connection with a fastening bolt 8, and a connecting plate 7 is installed on the precast top plate 1 and the precast concrete center column 2 through the fastening bolt 8. The left side and the right side of the prefabricated center pillar 2 in the groove are respectively provided with a high-strength magnet 6 which is fixedly connected with the prefabricated top plate 1 and the two sides of the prefabricated bottom plate through rivets 5 at intervals, and the upper end and the lower end of the prefabricated center pillar 2 are provided with bolt holes opened by the bolt groups 3 in up-and-down symmetry in position and quantity. The groove of interval distance is filled with and increases the whole flexible and scattered energy of station in vertical direction rubber 4, prefabricated center pillar 2 expose the concave part and be equipped with steel cylinder 9, it has rubber asphalt layer 10 to fill between steel cylinder 9 and the prefabricated center pillar 2, makes steel cylinder 9, asphalt rubber layer 10 and prefabricated center pillar 2 form a whole. The inner wall of the steel cylinder 9 is provided with a plurality of rivets 12 which can absorb shock and reset automatically and increase the connecting force between the prefabricated center post 2 and the steel cylinder 9; the steel cylinder 9 is uniformly provided with a plurality of energy dissipation holes 11 for dissipating energy. Rubber 4 is filled in the gaps among the precast top plate 1 and the precast concrete center column 2 due to the existence of the bolt group 3, and the rubber is epoxy resin mortar and can play a further role in shock absorption.
Referring to fig. 1 and 3, a circle of groove is dug at the side of the prefabricated top plate 1 and the prefabricated bottom plate, a high-strength magnet 6 is installed in the groove and is fixed with the prefabricated top plate 1 by a rivet 5, and the rivet 5 used here is a non-magnetic special rivet. At the part that 2 post ends of prefabricated center pillar stretch into the recess, also through rivet 5 fixed mounting have high-strength magnet 6 along post week, utilize the mutual magnetic force of magnet to play the effect to center pillar horizontal stability, perhaps can utilize the electromagnetic force to protect the center pillar.
In order to take the stability of the magnets 6 into consideration and further perform horizontal shock absorption, rubber 4 is filled between the magnets 6 respectively fixed on the precast top plate 1 and the precast concrete center pillar 2 for buffering, and rubber is filled between the lower bottom of the magnets 6 and the precast top plate 1, so that damage to the magnets due to vertical shock can be prevented when an earthquake occurs.
Referring to fig. 1, 4 and 5, a steel cylinder 9 is sleeved on the outer side of the precast concrete center pillar 2 to increase the rigidity of the precast center pillar 2, and for further shock absorption, rubber asphalt 10 is filled in the precast center pillar 2 and the steel cylinder 9, and the steel cylinder 9 and the precast center pillar 2 are fixed together by rivets 12. Considering that the middle column and the steel cylinder bear huge energy under the action of strong shock, a plurality of energy dissipation holes 11 are formed around the steel cylinder, and under the action of strong shock, multiple regions of the steel cylinder can enter a plastic state, so that the purpose of energy consumption is achieved. The distribution of the energy dissipation holes 11 on the steel cylinder 9 can be referred to fig. 5.
The working principle is as follows: when an earthquake occurs, under the action of earthquake load, the center pillar of the subway station can bear shearing force applied by the action of horizontal earthquake and inertia force applied by the action of vertical earthquake except the gravity of the center pillar and the gravity of the overlying soil body. When the shock absorption of the underground station is researched, the shock absorption in the horizontal direction and the vertical direction are considered. Therefore, the high-strength spring can be used for damping in the vertical direction, and the magnet can be used for damping in the horizontal direction.
Under normal use, prefabricated center pillar 2, prefabricated roof 1 and prefabricated bottom plate are connected through arranging the bolt crowd at prefabricated center pillar both ends, bolt crowd comprises high strength spring and screw thread post, and the clearance is filled rubber between recess and the prefabricated center pillar, just so can satisfy the buffering shock attenuation under the daily condition.
When an earthquake occurs, the earthquake is often accompanied with the conditions of fire or water leakage, and the like, therefore, the situation that the gap between the magnets of the high-strength magnet is filled with rubber through the rivet fixation along the groove wall in the grooves formed in the prefabricated top plate and the prefabricated bottom plate is considered, the horizontal shearing force can be resisted by the magnetic force between the magnets, the stress of the prefabricated center column is balanced after the earthquake through the magnetic force between the magnets and the elastic force generated by the extrusion between the rubbers, the pre-earthquake state is recovered, and the self-resetting is completed.
When a fire disaster or water seepage occurs, the high-strength magnet can still be normally used, and the reliability of the center pillar structure is greatly improved. The steel cylinder is arranged outside the prefabricated center post, and the steel cylinder, the asphalt rubber layer and the prefabricated center post form a whole body to increase the rigidity of the prefabricated center post. The steel cylinder on even open have a plurality of scattered can the hole, under the macroseism effect, can make steel cylinder multizone get into the plasticity state, reach the effect of power consumption.
Claims (6)
1. The utility model provides a subway station center pillar structure with shock attenuation is from reset function, includes prefabricated center pillar (2) and prefabricated roof (1) that are located on prefabricated center pillar (2) on being located prefabricated bottom plate, its characterized in that: the groove that has adaptation prefabricated center pillar (2) is opened to the symmetry on prefabricated roof (1) and the prefabricated bottom plate, and the prefabricated bottom plate recess is the same with prefabricated roof shape and structure, and both ends are equipped with interval distance bolt crowd (3) even as an organic whole respectively between prefabricated roof (1) and the prefabricated bottom plate about prefabricated center pillar (2) in the recess, and the prefabricated center pillar (2) left and right sides in the recess is equipped with interval distance high-strength magnet (6) with rivet (5) fixed link together respectively with between prefabricated roof (1) and the prefabricated bottom plate both sides, interval distance's recess intussuseption is filled with and increases the whole flexible and scattered energy rubber (4) of station in vertical direction, prefabricated center pillar (2) expose the groove part and be equipped with steel cylinder (9), it has rubber pitch layer (10) to fill between steel cylinder (9) and prefabricated center pillar (2), makes steel cylinder (9), The asphalt rubber layer (10) and the prefabricated center post (2) form a whole.
2. The subway station center pillar structure with the shock-absorbing self-resetting function as claimed in claim 1, wherein: the bolt group (3) comprises a plurality of bolts (8) arranged in the end face of the prefabricated center pillar (2) at intervals and a high-strength spring (31) with high elastic modulus arranged on a bolt thread pillar (32).
3. The subway station center pillar structure having a shock-absorbing self-resetting function according to claim 1 or 2, wherein: a connecting plate (7) is arranged between the bolt threaded column (32) and the prefabricated top plate (1), and a hole corresponding to the bolt threaded column (32) is formed in the connecting plate (7).
4. The subway station center pillar structure with the shock-absorbing self-resetting function as claimed in claim 1, wherein: the upper end and the lower end of the prefabricated center pillar (2) are provided with bolt groups (3) with the bolt holes in up-and-down symmetrical positions and quantity.
5. The subway station center pillar structure with the shock-absorbing self-resetting function as claimed in claim 1, wherein: the inner wall of the steel cylinder (9) is provided with a plurality of rivets (12) for increasing the connecting force between the prefabricated center post (2) and the steel cylinder (9).
6. The subway station center pillar structure having a shock-absorbing self-resetting function as claimed in claim 1 or 5, wherein: the steel cylinder (9) is uniformly provided with a plurality of energy dissipation holes (11) for dissipating energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291025.1A CN113026813B (en) | 2021-03-18 | 2021-03-18 | Subway station center pillar structure with shock attenuation is from restoring to throne function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291025.1A CN113026813B (en) | 2021-03-18 | 2021-03-18 | Subway station center pillar structure with shock attenuation is from restoring to throne function |
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| CN113026813A true CN113026813A (en) | 2021-06-25 |
| CN113026813B CN113026813B (en) | 2021-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482050A (en) * | 2021-07-21 | 2021-10-08 | 上海市城市建设设计研究总院（集团）有限公司 | Double-layer composite steel pipe column underground structure system for resisting strong earthquake disasters and construction method |
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| CN110952721A (en) * | 2019-12-18 | 2020-04-03 | 北京工业大学 | End-hinged viscoelastic self-resetting swinging column for underground structure |
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2021
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| KR101431380B1 (en) * | 2013-05-02 | 2014-08-18 | 성주현 | Triple composite waterproofing method applied loose laying joint type |
| CN204690585U (en) * | 2015-05-14 | 2015-10-07 | 华北水利水电大学 | Magnet type the controlling of vibration bearing |
| CN105064531A (en) * | 2015-09-01 | 2015-11-18 | 北京交通大学 | Self-reset magnetic fluid damper |
| CN108360367A (en) * | 2018-02-09 | 2018-08-03 | 石家庄铁道大学 | A kind of antidetonation does not fall bridge pier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113482050A (en) * | 2021-07-21 | 2021-10-08 | 上海市城市建设设计研究总院（集团）有限公司 | Double-layer composite steel pipe column underground structure system for resisting strong earthquake disasters and construction method |
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