CN114606972A - Double-layer subway station with shock insulation structure and construction method thereof - Google Patents
Double-layer subway station with shock insulation structure and construction method thereof Download PDFInfo
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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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention discloses a double-layer subway station with a shock insulation structure and a construction method thereof. Shock insulation structure includes lead core rubber shock insulation support, rubber shock insulation ring and rubber protection pad, and it sets up respectively in the linking department of center pillar, longeron, medium plate, roof to and the linking department of medium plate, roof and barricade, full play's ductility self, and through deformation processes such as tensile, compression absorption and consumption part shock wave energy, realization shock insulation effect under the seismic action. After earthquake, the damaged components in the subway station can be replaced or reinforced, the subway line can be communicated in a short time, the economic loss caused by similar disasters such as earthquake and the like can be greatly reduced, and the subway station has important economic and practical values and significance.
Description
Technical Field
The invention relates to the field of construction of underground structural engineering, in particular to a double-layer subway station with a shock insulation structure and a construction method thereof.
Background
With the continuous development of economy in China, urban ground space development tends to be saturated, ordinary ground traffic cannot meet the normal travel requirements of human beings, underground space is developed in a large scale, and the development of underground traffic (such as subway lines) becomes a necessary condition for relieving traffic jam; however, with the continuous development of underground space, the number of urban underground lines is increased, the lines are staggered with each other, the structure of a subway station is also complicated, and the management difficulty is increased. Complex underground lines have put great pressure on the development of urban underground spaces, and even many ground projects are affected to different extents.
A large number of practices show that whether the urban underground lines and subway stations are safe or not greatly influences whether the urban functions can be normally played or not. The structural damage of the urban underground line can not only cause the functional paralysis of part of the city, causing huge economic loss, but also cause a great amount of casualties. However, the traditional subway station building mode has the problems of poor earthquake resistance of the underground structure, high maintenance cost, long recovery period after disaster and the like. For example, in the earthquake of osaka, 1995, different types of underground structures such as daigai stations and partial inter-section tunnels thereof suffer serious damage, column bases of a plurality of columns are shattered, cement is peeled off, reinforcing steel bars leak, and even the ground surface is collapsed to different degrees. After the earthquake, the later maintenance and transformation work of the subway station is as long as one year, which causes huge economic loss.
Therefore, how to reduce the damage degree of the urban underground line and the subway station under the action of the impact load such as the earthquake and the like and shorten the maintenance period of the internal structure of the underground line becomes an important factor which needs to be considered in the structural design and construction of the urban underground line and the subway station in the future.
Disclosure of Invention
Aiming at the existing problems, the invention provides a double-layer subway station with a shock insulation structure and a construction method thereof, wherein a flexible connection system is established, a flexible connection technology based on hyperelastic cushion rubber is ingeniously combined with a modern assembly type technology, and the double-layer subway station with the shock insulation structure is established, so that the aims of improving the shock resistance of the station and facilitating maintenance and replacement of structural components are fulfilled. The specific technical scheme is as follows:
first, the present invention provides a double-deck subway station, which includes:
the subway station comprises a peripheral retaining wall, a bottom plate, a top plate, a middle column, a longitudinal beam and a middle plate, wherein the peripheral retaining wall, the bottom plate and the top plate form the subway station; the center pillars comprise a lower center pillar positioned at the lower layer of the double-layer subway station and an upper center pillar positioned at the upper layer of the double-layer subway station; the middle plate comprises a side middle plate connected with the retaining wall and a middle spanning plate positioned in the middle of the subway station; center pillar, longeron, medium plate, roof are the prefab, just the linking department of center pillar, longeron, medium plate, roof to and the linking department of medium plate, roof and barricade, be flexonics.
Preferably, aforementioned double-deck subway station, still be equipped with on the roof from glued membrane waterproof type coiled material and rigid waterproof layer, this rigid waterproof layer scribbles water proof coating's steel sheet for thick 1 ~ 2cm surface, and its highly be less than the ox horn leg support height that is used for the roof overlap joint in barricade department.
Preferably, in the double-layer subway station, the joint of the side middle plate and the retaining wall is provided with a dustproof steel plate, and the dustproof steel plate is angle steel with the thickness of 8-10 mm.
Secondly, the invention provides a seismic isolation structure for realizing the flexible connection of the double-layer subway station, which comprises: the lead core rubber shock insulation support is used for forming flexible connection between the top plate and the retaining wall, between the middle plate and the retaining wall, between the lower middle column and the longitudinal beam and between the upper middle column and the top plate; the rubber shock insulation ring is used for forming flexible connection between the upper center pillar and the middle plate; and the rubber protection pads are used for forming flexible connection between the side middle plates and the longitudinal beams, between the midspan plates and the longitudinal beams and between the upper middle columns and the longitudinal beams.
Aforementioned double-deck subway station isolation structure, lead core rubber isolation bearing includes: the shock-absorbing device comprises an upper connecting plate, a lower connecting plate and a lead core rubber shock-absorbing pad positioned between the upper connecting plate and the lower connecting plate; the lead core rubber shock insulation pad comprises a lead core positioned at the central part, a rubber steel plate laminated pad for accommodating the lead core through hole, and a pad rubber protective sleeve wrapped on the rubber steel plate laminated pad; the rubber steel plate laminated pad is formed by transversely laminating a plurality of layers of rubber gaskets and a plurality of layers of steel plate gaskets at intervals; the centers of the upper connecting plate and the lower connecting plate are provided with lead core clamping grooves with the same diameter as the lead core; the rubber gasket, the steel plate gasket, the rubber gasket protective sleeve and the lead core are bonded into a whole through hot vulcanization; the upper connecting plate, the lower connecting plate and the lead core rubber shock insulation pad are bonded into a whole through heat vulcanization, chloroprene rubber glue or sealing glue.
Aforesaid double-deck subway station shock insulation structure, rubber shock insulation ring includes: the inner connecting ring, the outer connecting ring and the rubber steel plate laminated ring are positioned between the inner connecting ring and the outer connecting ring; the rubber steel plate laminated ring is formed by longitudinally and alternately laminating a plurality of layers of rubber spacers and a plurality of layers of steel plate spacers; the upper end and the lower end of the rubber steel plate laminated ring are also provided with ring rubber protective sleeves, and the rubber steel plate laminated ring is packaged between the inner connecting ring and the outer connecting ring; the rubber spacer, the steel plate spacer and the ring rubber protective sleeve are bonded into a whole through heat vulcanization; the inner connecting ring, the outer connecting ring and the rubber steel plate laminated ring are bonded into a whole through heat vulcanization, chloroprene rubber glue or sealing glue.
Aforementioned double-deck subway station shock insulation structure, the rubber protection pad includes: the rubber protective sleeve, and multilayer rubber protective gaskets and multilayer steel plate protective gaskets arranged in the rubber protective sleeve; the multilayer rubber protective gaskets and the multilayer steel plate protective gaskets are transversely overlapped at intervals; the rubber protective gasket, the steel plate protective gasket and the rubber protective sleeve are bonded into a whole through heat vulcanization.
In the double-layer subway station shock insulation structure, the top plate and the retaining wall, and the middle plate and the retaining wall are connected through the horn leg support; the lead core rubber shock insulation support is arranged at the contact positions of the top plate and the retaining wall, the middle plate and the retaining wall, the top plate and the ox horn leg support and the middle plate and the ox horn leg support; the ox horn leg support is a discontinuous support and comprises a support top surface, a support side surface and a support inclined surface; and the top surface of the support is provided with an embedded steel plate for connecting the lead core rubber shock insulation support.
Preferably, a tension steel bar, an I-shaped bent steel bar, a II-shaped bent steel bar, an anchoring stirrup and a stirrup are arranged in the ox horn leg support; the tension steel bars are arranged at equal intervals; the I-shaped bent steel bars are arranged at equal intervals outside the embedded steel plate by 200 mm; the II-type bent steel bars are arranged in an encrypted equidistant mode within the range of 200mm of the embedded steel plate; the anchoring stirrups are arranged at the anchor bolt reinforcing steel bars of the embedded steel plate at equal intervals and fixed with the anchor bolt reinforcing steel bars in a spot welding manner; the stirrups are arranged at the non-inclined plane of the ox horn leg support at equal intervals in an encrypted mode.
Preferably, in the double-layer subway station shock insulation structure, the thickness of the upper connecting plate and the thickness of the lower connecting plate are 1-2 cm; the thickness of rubber cushion protective sheath is 2 ~ 3cm, the thickness of rubber gasket and steel sheet gasket is 5 ~ 10 mm.
Preferably, in the double-layer subway station shock insulation structure, the thicknesses of the inner connecting ring and the outer connecting ring are both 2-3 cm, and the thicknesses of the rubber spacer and the steel plate spacer are both 5-10 mm.
Preferably, in the double-layer subway station shock insulation structure, the thickness of the rubber protective sleeve is 1-2 cm, and the thicknesses of the rubber protective gasket and the steel plate protective gasket are 5-10 mm.
Preferably, in the double-layer subway station seismic isolation structure, the elastic modulus of the rubber gasket or the rubber spacer or the rubber protective gasket is 1-10 MPa; the steel plate gasket, the steel plate spacer or the steel plate protective gasket are made of Q235 steel.
The invention further provides a construction method of the double-layer subway station with the shock insulation structure, which comprises the following steps:
1) prefabricating the prefabricated members of the middle columns, the longitudinal beams, the middle plates and the top plates according to design requirements. The central columns comprise a lower central column positioned on the lower layer of the double-layer subway station and an upper central column positioned on the upper layer of the double-layer subway station; the middle plate comprises a side middle plate connected with the retaining wall and a middle spanning plate positioned in the middle of the subway station; meanwhile, prefabricating a shock insulation structure according to design requirements, wherein the shock insulation structure comprises a lead core rubber shock insulation support, a rubber shock insulation ring and a rubber protection pad; the lead core rubber shock insulation support is divided into four types, including a top plate and a middle plate and retaining wall contact type, a top plate and a middle plate and horn leg support contact type, a lower middle column and longitudinal beam contact type and an upper middle column and top plate contact type; the corresponding positions of the top plate, the side middle plate, the retaining wall, the ox horn leg support, the lower middle column, the upper middle column and the longitudinal beam are all provided with embedded steel plates for connecting the lead core rubber shock insulation support; the rubber shock insulation ring is of one type and is used at the connecting contact position of the middle column and the middle plate; the rubber protection pad is divided into three types, including a side middle plate and longitudinal beam contact type, a midspan plate and longitudinal beam contact type and an upper middle column and longitudinal beam contact type.
2) And constructing a peripheral retaining wall and a bottom plate of the subway station according to design requirements, and arranging a bracket support at a corresponding position.
3) And (4) assembling and connecting the prefabricated center column, the longitudinal beam, the middle plate, the top plate prefabricated member and the shock insulation structure according to design requirements.
4) The self-adhesive film waterproof coiled material is laid on the top plate, the rigid waterproof layer is installed, the dustproof steel plate is installed at the joint of the side middle plate and the retaining wall, and the double-layer subway station with the shock insulation function is formed.
In the construction method of the double-layer subway station with the shock insulation structure, in the step 3): the assembly connection is as follows:
the bottom of the lower center pillar is connected with the bottom plate in a pouring way;
the upper part of the lower center pillar is connected with the longitudinal beam through a prefabricated lead core rubber shock insulation support;
a rubber protection pad is laid above the longitudinal beam, a rubber shock isolation ring is placed above the rubber protection pad, and the bottom of the upper center pillar is sleeved in the rubber shock isolation ring and is in contact with the rubber protection pad;
one end of the side middle plate is erected on a bracket support on the retaining wall through a lead rubber shock insulation support, and a lead rubber shock insulation support is also arranged between the side middle plate and the retaining wall;
the other end of the side middle plate is erected on the longitudinal beam, and a rubber protection pad is arranged at the contact part of the bottom surface of the side middle plate and the longitudinal beam;
two ends of the middle spanning plate are erected on the longitudinal beam, and rubber protection pads are arranged at the contact positions of the bottom surface of the middle spanning plate and the longitudinal beam;
the upper part of the upper center pillar is connected with the top plate through a prefabricated lead core rubber shock insulation support;
two ends of the top plate are erected on the ox horn leg support on the retaining wall through lead core rubber shock insulation supports, and the lead core rubber shock insulation supports are also arranged between the top plate and the retaining wall;
all the lead core rubber shock insulation supports are fixedly installed through the embedded steel plates;
all the rubber shock insulation rings and rubber protection pads at the lower parts of the rubber shock insulation rings, the upper middle columns and the contact parts of the side middle plates and the middle spanning plates are poured by neoprene glue and/or sealant;
all the rubber protection pads are poured with neoprene glue and/or sealant between the side middle plates and the midspan plates and between the rubber protection pads and the longitudinal beams;
all joints are poured by mortar and/or neoprene-like glue and/or sealant.
According to the construction method of the double-layer subway station with the shock insulation structure, the embedded steel plate comprises a steel plate body and a bolt locking piece welded on the steel plate body; besides the embedded steel plates on the top plate and the side middle plate, the embedded steel plates corresponding to the rest lead core rubber shock insulation supports at all positions also comprise anchor bolt steel bars on the welding bolt locking parts; the thickness of the steel plate body is 1-2 cm; the bolt locking part reaches the length of crab-bolt reinforcing bar is 9 ~ 10 cm.
The invention has the beneficial effects that:
the top plate, the middle plate and the retaining wall of the double-layer subway station are flexibly connected through the horn leg support and the lead core rubber shock insulation support, so that concrete damage at two ends of the top of the subway station can be effectively avoided when an earthquake occurs; meanwhile, the subway station internal structure adopts an assembled middle plate, a middle column and a longitudinal beam which are provided with cushion rubber shock insulation devices, and the assembled middle plate, the middle column and the longitudinal beam are flexibly connected with the top plate through lead core rubber shock insulation supports, so that the rigid constraint of a middle plate-middle column-longitudinal beam connection node and a middle column-top plate connection node is opened, under the action of earthquake and other impact loads, the stress state of the middle column is changed into a compression stress state from a traditional tension and compression cycle stress state, the high ductility of the shock insulation devices can also absorb and consume earthquake wave energy greatly, the vibration amplitude of the whole structure under the action of earthquake and other impact loads can be further reduced, and the damage degree of concrete at the middle column-longitudinal beam connection point and the middle column-top plate connection point can be reduced.
The ox horn leg support is designed to be a discontinuous support, so that engineering construction and later maintenance and replacement of the lead core rubber shock insulation support are facilitated; the used internal components such as the top plate, the middle column, the longitudinal beam, the middle plate and the like are prefabricated in a unified mode by a factory and then transported to the site for assembly, so that the transportation loss of related materials in the construction process and construction waste on the construction site can be reduced, the labor intensity of constructors is reduced, the engineering construction period is shortened on the premise of ensuring the engineering quality, and the engineering construction fund is saved. And the assembled installation of large-scale prefabricated component, can combine relevant intelligent monitoring technique, under the prerequisite of guaranteeing subway station normal use, can in time discover the health status of each its inside component to carry out relevant reinforcement maintenance measure in the short time, the maintenance degree of difficulty is low, the work load is little. After an earthquake, the damaged components inside the subway line can be replaced and reinforced in a short time through the connecting part, the recovery period of the subway line after the disaster is short, and the economic loss caused by similar disasters such as earthquake and the like is greatly reduced.
The prefabricated top plate, the middle column, the longitudinal beam, the middle plate and other prefabricated parts are connected through the shock insulation structure, the two construction technologies are ingeniously fused, the assembly type construction of the subway station is realized, the leap of the underground line and the subway station construction from the site construction to the factory prefabrication is realized, the construction period can be greatly shortened on the premise of ensuring the engineering quality by constructing the internal components in a factory prefabrication mode, the later maintenance cost and difficulty are reduced to a certain extent, and the optimal solution is created for the underground line and subway station construction scheme.
Generally, the double-layer subway station with the shock insulation structure can fully exert the advantages and properties of various materials, improve the flexibility of the station structure on the premise of ensuring that the station structure meets the normal working requirements, better adapt to the stress strain environment of the soil body around the station structure under the action of shock loads such as earthquake motion and the like, and achieve the aim of resisting rigidity by soft, so that the overall shock resistance of the similar subway station structure is greatly improved, the generation of major public accidents is avoided, and casualties and economic losses are reduced; the method also provides a feasible scheme for improving the earthquake-resistant performance of underground lines and subway stations and reducing the maintenance cost, and has great significance for the smooth promotion of a 'toughness urban and rural' plan.
Drawings
FIG. 1 is a schematic structural diagram of a double-layer subway station with a seismic isolation structure according to the present invention;
FIG. 2 is an overall view and a sectional view of the cushion rubber-vibration isolating ring of the present invention;
FIG. 3 is a detailed view of the sidewall-bracket support-middle plate lap joint system of the present invention;
FIG. 4 is a schematic view of the construction of the side wall-bracket support-middle plate lap joint system of the present invention;
FIG. 5 is a bottom view of the plates in the assembled configuration of the present invention;
FIG. 6 is a schematic representation of the construction of the mid-plate-stringer-center-pillar lap joint system of the present invention;
FIG. 7 is a detail view of the mid-rail-center-pillar lap system of the present invention;
FIG. 8 is a pictorial representation of the construction of the roof-center pillar lap joint system of the present invention;
FIG. 9 is a detailed view of the sidewall-roof-rigid waterproof layer lap joint system of the present invention;
FIG. 10 is a detail view of the top bracket support of the present invention;
FIG. 11 is a pictorial representation of the top plate-side wall lap joint system construction of the present invention;
FIG. 12 is a bracket reinforcement for a corbel of the present invention;
FIG. 13 is a model diagram of an embedded steel plate according to the present invention;
FIG. 14 is a schematic view of a lead rubber seismic isolation bearing of the present invention.
In the figure: A. a retaining wall; B. a base plate; C. a top plate; D. a center pillar; d1, a lower center pillar; d2, upper center pillar; E. a longitudinal beam; F. a middle plate; f1, side middle plate; f2, midspan; G. a rigid waterproof layer; H. a dustproof steel plate; I. a horn leg support; i1, tension steel bar; i2, I-shaped bent steel bars; i3 and II type bent steel bars; i4, anchoring stirrups; i5, stirrup; J. pre-burying a steel plate; j1, steel plate body; j2, bolt locking piece; j3 anchor bar.
1. Lead core rubber shock insulation support; 1-1, an upper connecting plate; 1-2, a lower connecting plate; 1-3, lead core rubber shock insulation cushion; 1-31 parts of lead core; 1-32, rubber steel plate laminated cushion; 1-321 parts of rubber gasket; 1-322, steel plate gaskets; 1-33, rubber cushion protective sleeve.
2. A rubber shock isolation ring; 2-1, an inner connecting ring; 2-2, an outer connecting ring; 2-3, rubber steel plate laminated rings; 2-31, a rubber spacer; 2-32, steel plate spacers; 2-33, and a rubber protective sleeve.
3. A rubber protection pad; 3-1, a rubber protective sleeve; 3-2, rubber protective gaskets; 3-3, steel plate protective gaskets.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It should be apparent that the described embodiment is only one embodiment of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the present embodiment, belong to the protection scope of the present invention. The specific embodiment is as follows:
example 1
The embodiment is a construction method of a double-layer subway station with a shock insulation structure. As shown in fig. 1 to 14, the double-deck subway station includes: the subway station comprises a peripheral retaining wall A, a bottom plate B, a top plate C, a center pillar D, a longitudinal beam E and a middle plate F, wherein the peripheral retaining wall A, the bottom plate B and the top plate C are arranged in the subway station and divide the subway station into a double-layer structure; the center pillars D comprise a lower center pillar D1 positioned at the lower layer of the double-layer subway station and an upper center pillar D2 positioned at the upper layer of the double-layer subway station; the middle plate F comprises a side middle plate F1 connected with the retaining wall A and a middle span plate F2 positioned in the middle of the subway station; center pillar D, longeron E, medium plate F, roof C are the prefab, just the linking department of center pillar D, longeron E, medium plate F, roof C to and the linking department of medium plate F, roof C and barricade A, be flexonics. Still be equipped with on the roof C from glued membrane waterproof type coiled material and rigid waterproof layer G, this rigid waterproof layer G scribbles water proof coating's steel sheet for thick 1 ~ 2cm surface, and its highly be less than the ox horn leg support I height that is used for roof C overlap joint in barricade A department. The junction that side median plate F1 and barricade A are connected is equipped with dustproof steel sheet H, and this dustproof steel sheet H is preferred to be the angle steel that thickness is 8 ~ 10 mm.
The double-deck subway station of this embodiment realize flexonics through shock insulation structure, but the shock insulation structure that this embodiment provided is not limited to the flexonics who realizes double-deck subway station, and it can also be through appropriate improvement or combination for realize more other building structure's flexonics, reach the purpose of shock insulation. The shock insulation structure comprises a lead core rubber shock insulation support 1, a rubber shock insulation ring 2 and a rubber protection pad 3. The lead core rubber vibration isolation support 1 is used for forming flexible connection between a top plate C and a retaining wall A, between a middle plate F and the retaining wall A, between a lower center pillar D1 and a longitudinal beam E, and between an upper center pillar D2 and the top plate C; the rubber shock-isolating ring 2 is used for forming flexible connection between the upper center post D2 and the middle plate F; the rubber protection pad 3 is used for forming flexible connection between the side middle plate F1 and the side beam E, between the midspan plate F2 and the side beam E, and between the upper center pillar D2 and the side beam E.
Specifically, lead rubber vibration isolation bearing 1 includes: the shock-absorbing device comprises an upper connecting plate 1-1, a lower connecting plate 1-2 and a lead rubber shock-absorbing pad 1-3 positioned between the upper connecting plate 1-1 and the lower connecting plate 1-2; the lead core rubber shock insulation pad 1-3 comprises a lead core 1-31 positioned in the center, a rubber steel plate laminated pad 1-32 provided with a through hole for accommodating the lead core 1-31, and a pad rubber protective sleeve 1-33 wrapped on the rubber steel plate laminated pad 1-32. The rubber steel plate laminated pad 1-32 is formed by transversely and alternately laminating a plurality of layers of rubber gaskets 1-321 and a plurality of layers of steel plate gaskets 1-322; the centers of the upper connecting plate 1-1 and the lower connecting plate 1-2 are provided with lead core clamping grooves with the diameter equal to that of the lead cores 1-31, and the lead cores 1-31 are inserted and installed. The rubber gasket 1-321, the steel plate gasket 1-322, the rubber cushion protective sleeve 1-33 and the lead core 1-31 are bonded into a whole through hot vulcanization; the upper connecting plate 1-1 and the lower connecting plate 1-2 are bonded with the lead core rubber shock insulation pad 1-3 into a whole through heat vulcanization, chloroprene rubber glue or sealing glue. In the embodiment, the thicknesses of the upper connecting plate 1-1 and the lower connecting plate 1-2 are preferably 1-2 cm; the rubber cushion protective sleeve 1-33 is preferably 2-3 cm thick, and the rubber gasket 1-321 and the steel plate gasket 1-322 are preferably 5-10 mm thick.
The rubber vibration isolating ring 2 includes: an inner connecting ring 2-1, an outer connecting ring 2-2 and a rubber steel plate laminated ring 2-3 positioned between the inner connecting ring 2-1 and the outer connecting ring 2-2; the rubber steel plate laminated ring 2-3 is formed by longitudinally stacking a plurality of layers of rubber spacers 2-31 and a plurality of layers of steel plate spacers 2-32 at intervals; the upper end and the lower end of the rubber steel plate laminated ring 2-3 are also provided with ring rubber protective sleeves 2-33, and the rubber steel plate laminated ring 2-3 is packaged between the inner connecting ring 2-1 and the outer connecting ring 2-2. The rubber spacers 2-31, the steel plate spacers 2-32 and the ring rubber protective sleeves 2-33 are bonded into a whole through heat vulcanization; the inner connecting ring 2-1, the outer connecting ring 2-2 and the rubber steel plate laminated ring 2-3 are bonded into a whole through heat vulcanization, chloroprene rubber glue or sealing glue. In the embodiment, the thicknesses of the inner connecting ring 2-1 and the outer connecting ring 2-2 are preferably 2-3 cm, and the thicknesses of the rubber spacer 2-31 and the steel plate spacer 2-32 are also preferably 5-10 mm.
The rubber protection pad 3 includes: the rubber protective sleeve 3-1, and a plurality of layers of rubber protective gaskets 3-2 and a plurality of layers of steel plate protective gaskets 3-3 which are arranged in the rubber protective sleeve 3-1; the multilayer rubber protective gaskets 3-2 and the multilayer steel plate protective gaskets 3-3 are overlapped at intervals in the transverse direction; the rubber protective gasket 3-2, the steel plate protective gasket 3-3 and the rubber protective sleeve 3-1 are bonded into a whole through hot vulcanization; the thickness of the rubber protective sleeve 3-1 is preferably 1-2 cm, and the thicknesses of the rubber protective gasket 3-2 and the steel plate protective gasket 3-3 are also preferably 5-10 mm.
The elastic modulus of the rubber gasket 1-321, the rubber spacer 2-31 or the rubber protective gasket 3-2 is 1-10 MPa; the steel plate gaskets 1-322, the steel plate spacers 2-32 or the steel plate protective gaskets 3-3 are all made of Q235 steel.
In the embodiment, the top plate C is connected with the retaining wall A, and the middle plate F is connected with the retaining wall A through a horn-leg support I; lead core rubber shock insulation support 1 sets up in roof C and barricade A, medium plate F and barricade A, roof C and ox horn leg support I and medium plate F and ox horn leg support I's contact department. The ox horn leg support I is a discontinuous support and comprises a support top surface, a support side surface and a support inclined surface; and the top surface of the support is provided with an embedded steel plate J for connecting the lead core rubber shock insulation support 1. A tension steel bar I1, an I-shaped bent steel bar I2, a II-shaped bent steel bar I3, an anchoring stirrup I4 and a stirrup I5 are arranged in the ox horn leg support I; the tension steel bars I1 are arranged at equal intervals; the I-shaped bent steel bars I2 are arranged at equal intervals outside the embedded steel plate J200 mm; the II-type bent steel bars I3 are arranged in an encrypted and equidistant mode within the range of 200mm of the embedded steel plate J; the anchoring stirrups I4 are arranged at the anchor bolt reinforcing steel bars of the embedded steel plate J at equal intervals and fixed with the anchor bolt reinforcing steel bars in a spot welding manner; the stirrups I5 are arranged at the non-inclined surface of the bracket I of the ox horn and are arranged at equal intervals in a encrypted mode.
The construction method of the double-layer subway station with the shock insulation structure comprises the following steps:
1) prefabricating prefabricated parts of a center pillar D, a longitudinal beam E, a middle plate F and a top plate C according to design requirements; the center pillars D are divided into a lower center pillar D1 positioned at the lower layer of the double-layer subway station and an upper center pillar D2 positioned at the upper layer of the double-layer subway station; the middle plate F is divided into a side middle plate F1 connected with the retaining wall a and a midspan plate F2 located in the middle of the subway station. Simultaneously, a shock insulation structure is prefabricated according to design requirements, and the shock insulation structure comprises a lead core rubber shock insulation support 1, a rubber shock insulation ring 2 and a rubber protection pad 3.
In the embodiment, the lead core rubber shock insulation support 1 is of four types, namely a top plate and middle plate contact type with a retaining wall, a top plate and middle plate contact type with a horn leg support, a lower middle column contact type with a longitudinal beam and an upper middle column contact type with a top plate; roof C, side middle plate F1, barricade A, ox horn leg support I, center pillar D1 down, go up center pillar D2 and longeron E and correspond the department and all be equipped with pre-buried steel sheet J for connect lead core rubber shock insulation support 1. In the embodiment, the embedded steel plate J comprises a steel plate body J1 and a bolt locking piece J2 welded on the steel plate body J1; besides the embedded steel plates J of the top plate and the side middle plate, the embedded steel plates J corresponding to the lead core rubber vibration isolation supports 1 at other positions also comprise anchor bolt steel bars J3 on a welding bolt locking piece J2; the thickness of the steel plate body J1 is preferably 1-2 cm; the length of the bolt locking piece J2 and the length of the anchor bolt reinforcing steel bar J3 are preferably 9-10 cm.
In this embodiment, the rubber-vibration isolating ring 2 is of only one type and is used at the connecting contact position of the center pillar D and the middle plate F. In this embodiment, the rubber protection pad 3 is of three types, namely, a side middle plate-to-side member contact type, a mid-span plate-to-side member contact type, and an upper middle column-to-side member contact type.
2) The method comprises the following steps of building a peripheral retaining wall A and a bottom plate B of the subway station according to design requirements, arranging a horn-leg support I at a corresponding position, and manufacturing the horn-leg support I and the retaining wall A together through cast-in-place construction.
3) And (4) assembling and connecting the prefabricated center pillar D, the longitudinal beam E, the middle plate F, the top plate C prefabricated member and the shock insulation structure according to design requirements. The method specifically comprises the following steps:
the bottom of the lower middle column D1 is in pouring connection with the bottom plate B;
the upper part of the lower center pillar D1 is connected with the longitudinal beam E through a prefabricated lead core rubber vibration isolation support 1;
a rubber protection pad 3 is laid above the longitudinal beam E, a rubber shock isolation ring 2 is placed above the rubber protection pad 3, and the bottom of the upper center pillar D2 is sleeved in the rubber shock isolation ring 2 and is in contact with the rubber protection pad 3;
one end of the side middle plate F1 is erected on the ox horn leg support I on the retaining wall A through the lead core rubber shock insulation support 1, and the lead core rubber shock insulation support 1 is also arranged between the side middle plate and the retaining wall A;
the other end of the side middle plate F1 is erected on the longitudinal beam E, and a rubber protective pad 3 is arranged at the contact part of the bottom surface of the side middle plate F1 and the longitudinal beam E;
both ends of the span middle plate F2 are erected on the longitudinal beam E, and rubber protection pads 3 are arranged at the contact positions of the bottom surface of the span middle plate F2 and the longitudinal beam E;
the upper part of the upper center pillar D2 is connected with the top plate C through a prefabricated lead core rubber vibration isolation support 1;
two ends of the top plate C are erected on the ox horn leg support I on the retaining wall A through the lead core rubber shock insulation support 1, and the lead core rubber shock insulation support 1 is also arranged between the top plate C and the retaining wall A;
all the lead core rubber shock insulation supports 1 are fixedly installed through embedded steel plates J;
all the contact positions between the rubber shock-isolating rings 2 and the rubber protection pads 3 at the lower parts thereof, between the rubber shock-isolating rings and the upper center columns D2 and between the rubber shock-isolating rings and the side middle plates F1 and the midspan plates F2 are poured by neoprene glue and/or sealant;
all the rubber protection pads 3 are poured with chloroprene rubber glue and/or sealant between the side middle plate F1 and the midspan plate F2 and between the side middle plate and the longitudinal beam E;
all joints are poured by mortar and/or neoprene-like glue and/or sealant.
4) And laying self-adhesive film waterproof coiled materials on the top plate C, installing a rigid waterproof layer G, and installing a dustproof steel plate H at the joint of the side middle plate F1 and the retaining wall A to form a double-layer subway station with a shock insulation function.
Example 2
In this embodiment, a double-deck subway station having a seismic isolation structure is constructed by the construction method described in embodiment 1.
The double-layer subway station is firstly built according to design, and comprises a subway station space enclosed by a retaining wall A and a bottom plate B, internal components located in the subway station space, and a top plate C. In this embodiment, the retaining wall A and the bottom plate B are cast in place. The inner member thereof includes a lower center pillar D1 located at the lower layer of the subway for supporting the side member E; the middle plate F (divided into a side middle plate F1 and a midspan plate F2) which is erected on the side rails E to divide the subway station space into two layers is located at the upper center pillar D2 of the upper layer of the subway and is used for supporting the roof C. The lower center pillar D1, the upper center pillar D2, the middle plate F, the longitudinal beam E and the top plate C are all prefabricated parts.
The seismic isolation structure of the embodiment includes: lead core rubber shock insulation support 1, rubber shock insulation ring 2 and rubber protection pad 3. The lead core rubber shock insulation support 1 is divided into four types, namely a top plate and middle plate and retaining wall contact type, a top plate and middle plate and horn leg support contact type, a lower middle column and longitudinal beam contact type and an upper middle column and top plate contact type; the rubber protection pad 3 is divided into three types, namely a side middle plate and longitudinal beam contact type, a midspan plate and longitudinal beam contact type and an upper middle post and longitudinal beam contact type.
When the main structure of the station is constructed, firstly, earth excavation is carried out, then, concrete casting is carried out on structures such as the retaining wall A and the bottom plate B, and after the cast structure meets the requirement of specified strength, prefabricated components such as the lower center pillar D1, the longitudinal beam E, the side middle plate F1, the middle spanning plate F2, the upper center pillar D2 and the top plate C, shock insulation devices such as the lead core rubber shock insulation support 1, the rubber shock insulation ring 2 and the rubber protection pad 3 are sequentially conveyed into the cast-in-place structure. And pouring the bottom of the lower center pillar D1 at a corresponding position of the bottom plate B, and then sequentially overlapping the longitudinal beam E, the midspan plate F2, the side middle plate F1, the upper center pillar D2 and the top plate C.
The lower center pillar D1 is connected with the bottom plate B in a pouring mode and serves as a foundation of other structures in the subway station. The upper end of the lower center pillar D1 is provided with an embedded steel plate J for connecting and installing a contact type lead core rubber shock insulation support 1 of the lower center pillar and a longitudinal beam, and the thicknesses of an upper connecting plate 1-1 and a lower connecting plate 1-2 of the lead core rubber shock insulation support 1 are both 2 cm; the thickness of the rubber cushion protective sleeve 1-33 is preferably 3cm, and the thickness of the rubber gasket 1-321 and the steel plate gasket 1-322 in the rubber cushion protective sleeve is 10 mm. An upper connecting plate 1-1 of the lead core rubber vibration isolation support 1 is connected with the longitudinal beam E, and a lower connecting plate 1-2 is connected with the upper end of the lower center pillar D1.
Be equipped with cast in situ and the integrative ox horn leg support I of barricade on the barricade A, the limit portion of medium plate F and roof C all overlap joint is on ox horn leg support I. All the bracket supports are designed to be discontinuous supports, so that engineering construction and later maintenance and replacement of the lead rubber vibration isolation support are facilitated. A corresponding embedded steel plate J is arranged at the contact position of the middle plate F and the top plate C on the ox horn leg support I and is used for installing the top plate and the lead core rubber shock insulation support 1 of which the middle plate is in contact with the ox horn leg support, and the upper connecting plate 1-1 and the lower connecting plate 1-2 of the lead core rubber shock insulation support 1 are both 1.5 cm; the thickness of the rubber cushion protective sleeve 1-33 is 2.5cm, and the thickness of the rubber gasket 1-321 and the thickness of the steel plate gasket 1-322 are 7 mm.
The parts, which are in contact with the middle plate F and the top plate C, on the retaining wall A are also provided with corresponding embedded steel plates J which are used for connecting the top plate and the middle plate with the retaining wall contact type lead core rubber shock insulation support 1, and the upper connecting plate 1-1 and the lower connecting plate 1-2 of the lead core rubber shock insulation support 1 are both 1 cm; the thickness of the rubber cushion protective sleeve 1-33 is 2cm, and the thickness of the rubber gasket 1-321 and the thickness of the steel plate gasket 1-322 are 5 mm.
In this embodiment, the lap joints of the side middle plate F1 and the mid-span plate F2 and the longitudinal beam E are provided with cushion rubber protective layers 3 of a side middle plate-longitudinal beam contact type and a mid-span plate-longitudinal beam contact type, the thickness of each cushion rubber protective layer 3 is 1cm, and the thickness of each rubber protective pad 3-2 and the thickness of each steel plate protective pad 3-3 are also 5 mm. An upper center pillar and a longitudinal pillar contact type cushion rubber protective layer 3 is laid on the longitudinal pillar E at the position of the upper center pillar D2, the thickness of the cushion rubber protective sleeve 3-1 is 2cm, and the thickness of the rubber protective pad 3-2 and the steel plate protective pad 3-3 is 10 mm.
The lower part of the upper center post D2 is sleeved in the rubber shock insulation ring 2, the thicknesses of the inner connecting ring 2-1 and the outer connecting ring 2-2 of the rubber shock insulation ring 2 are both preferably 3cm, and the thicknesses of the rubber spacer 2-31 and the steel plate spacer 2-32 are both 10 mm. The upper part of the upper center pillar D2 is provided with an embedded steel plate J for connecting and installing the upper center pillar and a top plate contact type lead core rubber shock insulation support 1, and the thickness of an upper connecting plate 1-1 and the thickness of a lower connecting plate 1-2 of the lead core rubber shock insulation support 1 are both 2 cm; the thickness of the rubber cushion protective sleeve 1-33 is preferably 3cm, and the thickness of the rubber gasket 1-321 and the steel plate gasket 1-322 in the rubber cushion protective sleeve is 10 mm. An upper connecting plate 1-1 of the lead core rubber vibration isolation support 1 is connected with a top plate C, and a lower connecting plate 1-2 is connected with the upper end of an upper center post D2.
In this embodiment, lay self-adhesive film waterproof type coiled material and install rigid waterproof layer G on the roof C, this rigid waterproof layer G is the steel sheet that 2cm thick surface scribbled water proof coating, and its height in barricade A department is less than the ox horn leg support I height that is used for roof C overlap joint. In this embodiment, dustproof steel plate H is set up to the junction of side median plate F1 and barricade A, and this dustproof steel plate H is the angle steel that thickness is 8 mm.
In the embodiment, the joints of the retaining wall A and the top plate C are filled with rubber water stop strips which expand when encountering water to further strengthen water resistance, and all the joints are poured by mortar and/or neoprene glue and/or sealant, so that the double-layer subway station with the shock insulation function is built.
For the shallow buried underground structure, the damage degree of the horizontal vibration of the surrounding soil layer caused by seismic waves to underground lines and the subway station is far greater than that of the vertical vibration due to the coupling effect of the surrounding soil layer. Under the action of impact load of the surrounding soil layer in the horizontal direction, shock insulation structures such as a lead core rubber shock insulation support, a rubber shock insulation ring and a rubber protection pad can fully exert the self ductility, and can continuously stretch and compress, and part of shock wave energy can be gradually absorbed and consumed in the deformation process. Meanwhile, shock insulation structures such as a cushion rubber protective layer, a cushion rubber shock insulation ring and a lead core rubber shock insulation support on the middle plate and the longitudinal beam prefabricated part form a flexible system from the middle column to the longitudinal beam; the lead core rubber shock insulation support at the retaining wall and the top plate forms another flexible system; under the effect of impact loads such as earthquakes, the shock insulation structure can increase the flexibility of the overall structure of the subway station, deform with soft steel, and effectively reduce the concrete molding damage of the mutual contact positions (such as the two ends of the top, the bottom of the top-layer center pillar and the like), thereby improving the overall shock resistance of the station structure. And after the earthquake or other impact loads occur, if the prefabricated part and the shock insulation structure have large plastic damage, the damage grade should be evaluated in time, and corresponding maintenance or replacement is carried out, so as to ensure the safety of the whole structure.
In addition, the seismic isolation structure can indirectly adjust the earthquake intensity tolerance level of the mutual connection positions of the middle plate, the top plate, the retaining wall and the middle column and the connection positions of the longitudinal beams and the middle columns by adjusting the length, the thickness and the material of the cushion rubber protective layer, the outer diameter and the material of the cushion rubber isolation ring, the size and the material of the lead core rubber isolation support and other factors.
In conclusion, due to the existence of the cushion rubber protective layer, the cushion rubber shock insulation ring and the lead core rubber shock insulation support inside the double-layer subway station, the horizontal shearing resistance applied by the soil layer is greatly improved, the molding damage of the longitudinal beams, the middle plate, the middle column, the two ends of the top and the concrete on the top of the side wall inside the structure is greatly reduced, and the double-layer subway station has important significance for improving the overall shock resistance of the station structure.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a double-deck subway station which characterized in that: this double-deck subway station includes:
the subway station comprises a peripheral retaining wall (A), a bottom plate (B), a top plate (C), a central column (D), a longitudinal beam (E) and a middle plate (F), wherein the peripheral retaining wall (A), the bottom plate (B) and the top plate (C) form the subway station, and the central column (D), the longitudinal beam (E) and the middle plate (F) are arranged in the subway station and divide the subway station into a double-layer structure;
the middle column (D) comprises a lower middle column (D1) positioned at the lower layer of the double-layer subway station and an upper middle column (D2) positioned at the upper layer of the double-layer subway station;
the middle plate (F) comprises a side middle plate (F1) connected with the retaining wall (A) and a cross middle plate (F2) positioned in the middle of the subway station;
the middle column (D), the longitudinal beam (E), the middle plate (F) and the top plate (C) are prefabricated pieces, and the connection positions of the middle column (D), the longitudinal beam (E), the middle plate (F) and the top plate (C) and the connection positions of the middle plate (F), the top plate (C) and the retaining wall (A) are all flexibly connected.
2. The double-deck subway station as claimed in claim 1, wherein:
the roof (C) is also provided with a self-adhesive film waterproof coiled material and a rigid waterproof layer (G), the rigid waterproof layer (G) is a steel plate with the thickness of 1-2 cm and the surface coated with waterproof paint, and the height of the rigid waterproof layer (G) at the retaining wall (A) is lower than that of the ox horn leg support (I) lapped with the roof (C);
the junction that side median plate (F1) and barricade (A) are connected is equipped with dustproof steel sheet (H), and this dustproof steel sheet (H) is 8 ~ 10 mm's angle steel for thickness.
3. A shock insulation structure for realizing flexible connection is characterized in that: the method comprises the following steps:
the lead core rubber shock insulation support (1) is used for forming flexible connection between a top plate (C) and a retaining wall (A), between a middle plate (F) and the retaining wall (A), between a lower middle column (D1) and a longitudinal beam (E) and between an upper middle column (D2) and the top plate (C);
the rubber shock insulation ring (2) is used for forming flexible connection between the upper center post (D2) and the middle plate (F);
and the rubber protection pad (3) is used for forming flexible connection between the side middle plate (F1) and the longitudinal beam (E), between the midspan plate (F2) and the longitudinal beam (E) and between the upper middle column (D2) and the longitudinal beam (E).
4. Seismic isolation structure according to claim 3, wherein:
lead core rubber isolation bearing (1) includes: the shock-absorbing and shock-absorbing device comprises an upper connecting plate (1-1), a lower connecting plate (1-2) and a lead rubber shock-absorbing pad (1-3) positioned between the upper connecting plate (1-1) and the lower connecting plate (1-2);
the lead core rubber shock insulation pad (1-3) comprises a lead core (1-31) positioned at the central part, a rubber steel plate laminated pad (1-32) provided with a through hole for accommodating the lead core (1-31), and a pad rubber protective sleeve (1-33) wrapped on the rubber steel plate laminated pad (1-32);
the rubber steel plate laminated pad (1-32) is formed by transversely and alternately laminating a plurality of layers of rubber gaskets (1-321) and a plurality of layers of steel plate gaskets (1-322);
the centers of the upper connecting plate (1-1) and the lower connecting plate (1-2) are provided with lead core clamping grooves with the same diameter as the lead cores (1-31);
the rubber gasket (1-321), the steel plate gasket (1-322), the rubber cushion protective sleeve (1-33) and the lead core (1-31) are bonded into a whole through heat vulcanization; the upper connecting plate (1-1), the lower connecting plate (1-2) and the lead core rubber shock insulation pad (1-3) are bonded into a whole through hot vulcanization, chloroprene rubber glue or sealing glue;
the thickness of the upper connecting plate (1-1) and the thickness of the lower connecting plate (1-2) are 1-2 cm;
the thickness of the rubber cushion protective sleeve (1-33) is 2-3 cm;
the thicknesses of the rubber gaskets (1-321) and the steel plate gaskets (1-322) are both 5-10 mm.
5. Seismic isolation structure according to claim 4, wherein:
the rubber vibration isolation ring (2) comprises: the inner connecting ring (2-1), the outer connecting ring (2-2) and a rubber steel plate laminated ring (2-3) positioned between the inner connecting ring (2-1) and the outer connecting ring (2-2);
the rubber steel plate laminated ring (2-3) is formed by longitudinally and alternately stacking a plurality of layers of rubber spacers (2-31) and a plurality of layers of steel plate spacers (2-32); the upper end and the lower end of the rubber steel plate laminated ring (2-3) are also provided with ring rubber protective sleeves (2-33), and the rubber steel plate laminated ring (2-3) is packaged between the inner connecting ring (2-1) and the outer connecting ring (2-2);
the rubber spacers (2-31) and the steel plate spacers (2-32) are bonded with the ring rubber protective sleeve (2-33) into a whole through heat vulcanization; the inner connecting ring (2-1), the outer connecting ring (2-2) and the rubber steel plate laminated ring (2-3) are bonded into a whole through hot vulcanization, chloroprene rubber glue or sealing glue;
the thickness of the inner connecting ring (2-1) and the thickness of the outer connecting ring (2-2) are both 2-3 cm;
the thicknesses of the rubber spacers (2-31) and the steel plate spacers (2-32) are both 5-10 mm.
6. Seismic isolation structure according to claim 4, wherein:
the rubber protection pad (3) comprises: the rubber protective sleeve (3-1), multilayer rubber protective gaskets (3-2) and multilayer steel plate protective gaskets (3-3) arranged in the rubber protective sleeve (3-1); the multilayer rubber protective gaskets (3-2) and the multilayer steel plate protective gaskets (3-3) are overlapped at intervals in the transverse direction; the rubber protective gasket (3-2), the steel plate protective gasket (3-3) and the rubber protective sleeve (3-1) are bonded into a whole through hot vulcanization;
the thickness of the rubber protective sleeve (3-1) is 1-2 cm;
the thicknesses of the rubber protective gasket (3-2) and the steel plate protective gasket (3-3) are both 5-10 mm.
7. A seismic isolation structure according to any of claims 4 to 6, wherein:
the elastic modulus of the rubber gasket (1-321), the rubber spacer (2-31) or the rubber protective gasket (3-2) is 1-10 MPa;
the steel plate gaskets (1-322), the steel plate spacers (2-32) or the steel plate protective gaskets (3-3) are all made of Q235 steel.
8. Seismic isolation structure according to claim 5, wherein:
the top plate (C) is connected with the retaining wall (A), and the middle plate (F) is connected with the retaining wall (A) through a horn-leg support (I);
the lead core rubber shock insulation support (1) is arranged at the contact positions of the top plate (C) and the retaining wall (A), the middle plate (F) and the retaining wall (A), the top plate (C) and the ox horn leg support (I) and the middle plate (F) and the ox horn leg support (I);
the horn leg support (I) is a discontinuous support and comprises a support top surface, a support side surface and a support inclined surface; the top surface of the support is provided with an embedded steel plate (J) for connecting the lead core rubber shock insulation support (1);
a tension steel bar (I1), an I-shaped bent steel bar (I2), a II-shaped bent steel bar (I3), an anchoring stirrup (I4) and a stirrup (I5) are arranged in the ox horn leg support (I);
the tension steel bars (I1) are arranged at equal intervals;
the I-shaped bent steel bars (I2) are arranged at equal intervals outside the embedded steel plate (J) by 200 mm; the II-type bent steel bars (I3) are arranged in an encrypted and equidistant mode within the range of 200mm of the embedded steel plate (J);
the anchor stirrups (I4) are arranged at the anchor bolt reinforcing steel bars of the embedded steel plate (J) at equal intervals and are fixed with the anchor bolt reinforcing steel bars in a spot welding manner; the stirrups (I5) are arranged at the non-inclined surface of the ox horn leg support (I) in an encrypted and equidistant mode.
9. A construction method of a double-layer subway station with a shock insulation structure is characterized by comprising the following steps: the method comprises the following steps:
1) prefabricating prefabricated parts of the center pillar (D), the longitudinal beam (E), the middle plate (F) and the top plate (C) according to design requirements; wherein the center pillars (D) include a lower center pillar (D1) located at a lower level of the double-deck subway station and an upper center pillar (D2) located at an upper level of the double-deck subway station; the middle plate (F) comprises a side middle plate (F1) connected with the retaining wall (A) and a cross middle plate (F2) positioned in the middle of the subway station;
simultaneously, prefabricating a shock insulation structure according to design requirements, wherein the shock insulation structure comprises a lead core rubber shock insulation support (1), a rubber shock insulation ring (2) and a rubber protection pad (3); the lead core rubber shock insulation support (1) is divided into four types, including a top plate and a middle plate and retaining wall contact type, a top plate and middle plate and ox horn leg support contact type, a lower middle column and longitudinal beam contact type and an upper middle column and top plate contact type;
the corresponding positions of the top plate (C), the side middle plate (F1), the retaining wall (A), the ox horn leg support (I), the lower middle column (D1), the upper middle column (D2) and the longitudinal beam (E) are all provided with embedded steel plates (J) used for connecting the lead core rubber shock insulation support (1); the rubber shock insulation ring (2) is of one type and is used at the connecting contact part of the middle column (D) and the middle plate (F); the rubber protection pad (3) is divided into three types, including a side middle plate and longitudinal beam contact type, a midspan plate and longitudinal beam contact type and an upper middle column and longitudinal beam contact type;
2) constructing a retaining wall (A) and a bottom plate (B) around a subway station according to design requirements, and arranging a horn leg support (I) at a corresponding position;
3) assembling and connecting the prefabricated center pillar (D), the longitudinal beam (E), the middle plate (F), the top plate (C) and the shock insulation structure according to design requirements;
4) and (3) paving a self-adhesive film waterproof type coiled material on the top plate (C) and installing a rigid waterproof layer (G), and installing a dustproof steel plate (H) at the joint of the side middle plate (F1) and the retaining wall (A) to form a double-layer subway station with a shock insulation function.
10. The construction method of a double-deck subway station having a seismic isolation structure as claimed in claim 9, wherein: in step 3): the assembly connection is as follows:
the bottom of the lower middle post (D1) is connected with the bottom plate (B) in a pouring way;
the upper part of the lower center pillar (D1) is connected with the longitudinal beam (E) through a prefabricated lead core rubber vibration isolation support (1);
a rubber protection pad (3) is laid above the longitudinal beam (E), a rubber shock isolation ring (2) is placed above the rubber protection pad (3), and the bottom of the upper center pillar (D2) is sleeved in the rubber shock isolation ring (2) and is in contact with the rubber protection pad (3);
one end of the side middle plate (F1) is erected on the ox horn leg support (I) on the retaining wall (A) through a lead core rubber shock insulation support (1), and the lead core rubber shock insulation support (1) is also arranged between the side middle plate and the retaining wall (A);
the other end of the side middle plate (F1) is arranged on the longitudinal beam (E) in an overlapping way, and a rubber protection pad (3) is arranged at the contact part of the bottom surface of the side middle plate and the longitudinal beam (E);
both ends of the middle spanning plate (F2) are erected on the longitudinal beam (E), and rubber protection pads (3) are arranged at the contact positions of the bottom surface of the middle spanning plate and the longitudinal beam (E);
the upper part of the upper center post (D2) is connected with the top plate (C) through a prefabricated lead core rubber vibration isolation support (1);
two ends of the top plate (C) are erected on the ox horn leg support (I) on the retaining wall (A) through lead core rubber shock insulation supports (1), and the lead core rubber shock insulation supports (1) are arranged between the top plate and the retaining wall (A);
all the lead core rubber shock insulation supports (1) are installed and fixed through embedded steel plates (J);
the embedded steel plate (J) comprises a steel plate body (J1) and a bolt locking piece (J2) welded on the steel plate body (J1);
besides the embedded steel plates (J) on the top plate (C) and the side middle plate (F1), the embedded steel plates (J) corresponding to the lead core rubber vibration isolation supports (1) at other positions also comprise anchor bolt steel bars (J3) on a welding bolt locking piece (J2);
the thickness of the steel plate body (J1) is 1-2 cm;
the length of each bolt locking piece (J2) and the length of each anchor bolt reinforcing steel bar (J3) are both 9-10 cm;
all the rubber shock insulation rings (2) are poured by neoprene glue and/or sealant with the contact positions between the rubber shock insulation rings and the rubber protection pads (3) at the lower parts of the rubber shock insulation rings, between the rubber shock insulation rings and the upper center columns (D2) and between the rubber shock insulation rings and the side middle plates (F1) and the midspan plates (F2);
all the rubber protection pads (3) and the side middle plates (F1) and the middle span plates (F2) and the longitudinal beams are poured by neoprene glue and/or sealant;
all joints are poured by mortar and/or neoprene-like glue and/or sealant.
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| CN202210412384.2A CN114606972B (en) | 2022-04-19 | 2022-04-19 | Double-layer subway station with shock insulation structure and construction method thereof |
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| CN114606972B CN114606972B (en) | 2023-12-19 |
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| JP2002013572A (en) * | 2000-06-30 | 2002-01-18 | Toshiba Corp | Seismic isolator |
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| CN103696504A (en) * | 2013-12-24 | 2014-04-02 | 北京化工大学 | Multilayer rubber laminated isolation bearing |
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| CN204059186U (en) * | 2014-08-06 | 2014-12-31 | 南京工业大学 | Unidirectional lead rubber laminated bearing |
| CN206054601U (en) * | 2016-10-08 | 2017-03-29 | 中国地震局工程力学研究所 | It is a kind of to realize each resistance to plucking earthquake isolating equipment for being controlled to frequency respectively |
| CN111305263A (en) * | 2020-03-18 | 2020-06-19 | 南京工业大学 | Shock insulation structure for separating upper layer from lower layer in two-layer station |
| CN113718845A (en) * | 2021-08-16 | 2021-11-30 | 南京工业大学 | Double-deck subway station structure of cast-in-place interior assembly in outside |
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2022
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002013572A (en) * | 2000-06-30 | 2002-01-18 | Toshiba Corp | Seismic isolator |
| CN203322125U (en) * | 2013-05-24 | 2013-12-04 | 安徽奥丰汽车配件有限公司 | Automobile shock absorbing bushing with orthohexagnal flarings |
| CN103696504A (en) * | 2013-12-24 | 2014-04-02 | 北京化工大学 | Multilayer rubber laminated isolation bearing |
| CN204059186U (en) * | 2014-08-06 | 2014-12-31 | 南京工业大学 | Unidirectional lead rubber laminated bearing |
| CN104179200A (en) * | 2014-08-22 | 2014-12-03 | 金陵科技学院 | Underground structure damping system and construction method thereof |
| CN206054601U (en) * | 2016-10-08 | 2017-03-29 | 中国地震局工程力学研究所 | It is a kind of to realize each resistance to plucking earthquake isolating equipment for being controlled to frequency respectively |
| CN111305263A (en) * | 2020-03-18 | 2020-06-19 | 南京工业大学 | Shock insulation structure for separating upper layer from lower layer in two-layer station |
| CN113718845A (en) * | 2021-08-16 | 2021-11-30 | 南京工业大学 | Double-deck subway station structure of cast-in-place interior assembly in outside |
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| CN114606972B (en) | 2023-12-19 |
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