CN220013769U - Self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center column - Google Patents
Self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center column Download PDFInfo
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- CN220013769U CN220013769U CN202321682411.4U CN202321682411U CN220013769U CN 220013769 U CN220013769 U CN 220013769U CN 202321682411 U CN202321682411 U CN 202321682411U CN 220013769 U CN220013769 U CN 220013769U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 121
- 239000010959 steel Substances 0.000 title claims abstract description 121
- 239000004567 concrete Substances 0.000 title claims abstract description 33
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 51
- 230000035939 shock Effects 0.000 claims description 16
- 238000013016 damping Methods 0.000 claims description 9
- 239000011178 precast concrete Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000011374 ultra-high-performance concrete Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008458 response to injury Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
The utility model relates to a self-resetting and replaceable underground station steel pipe concrete precast spliced center column, which comprises a top plate, a bottom plate and a precast center column, wherein the precast center column is arranged between the top plate and the bottom plate, and an upper flange connecting piece is arranged between the precast center column and the top plate; the upper flange connecting piece comprises a first steel base plate, a second steel base plate, memory alloy connecting rods, anchors and stiffening steel plates, wherein the first steel base plate and the second steel base plate are respectively arranged on two sides of a top plate, a plurality of memory alloy connecting rods penetrate through the top plate, two ends of each memory alloy connecting rod respectively extend and penetrate through the first steel base plate and the second steel base plate and are connected with the anchors, the end parts of the prefabricated center posts are arranged on the second steel base plate, and a plurality of stiffening steel plates are arranged between the second steel base plate and the prefabricated center posts; a lower flange connector is arranged between the prefabricated center column and the bottom plate, and the lower flange connector and the upper flange connector are identical in structure. The utility model can realize quick replacement of the post-earthquake damaged middle column of the underground station, and the memory alloy connecting rod can dissipate earthquake energy and provide self-resetting capability.
Description
Technical Field
The utility model relates to the technical field of underground station earthquake resistance, in particular to a self-resetting and replaceable underground station steel tube concrete precast spliced center column.
Background
Subway stations are usually buried underground, the deformation of the underground structure is limited by the restriction of soil under the action of earthquake, and the earthquake damage response of the underground structure is generally considered to be weaker than that of the above-ground structure for a long time, so that the research on earthquake resistance of the underground structure is also in a slow development stage.
The accident of subway station collapse also occurs, the alarm is knocked off, people only realize the importance of underground structure earthquake resistance, and the earthquake resistance research of the underground structure is developed. According to the earthquake damage characteristics of the underground station, the center pillar is considered to be an earthquake-resistant weak link of the station structure, the inner force of the top and bottom ends of the center pillar is continuously changed under the action of an earthquake, and concrete materials are easier to damage under the repeated movement of earthquake waves, so that the center pillar is easier to damage at the end part in strong earthquake.
The middle column is constructed mainly on site, and is formed by reinforced concrete structures, and reinforced concrete pouring is also formed between the middle column and the top plate and the bottom plate. The traditional middle column construction mode has low industrialization degree, low construction efficiency and larger resource and energy consumption, and can not meet the sustainable development construction requirements of energy conservation and environmental protection. Once an earthquake occurs, the concrete on the surface of the middle column is easy to fall off, so that the internal steel bars are exposed, the bearing capacity of the concrete is seriously influenced, the safety of a building is also influenced, and the concrete is difficult to repair in the later stage.
Therefore, in order to meet the performance requirements of the country and the society on the underground station after the earthquake, a novel underground station earthquake-resistant system needs to be established through considering the aspects of earthquake resistance of the underground station structure, so that the system has the functions of self-resetting and component replacement.
Disclosure of Invention
The utility model provides a self-resetting and replaceable underground station steel pipe concrete prefabricated assembled center column, which aims to solve the problems that the conventional center column cannot be reset after an earthquake, so that the structural damage is large and the repair difficulty is large.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a self-resetting and removable underground station steel pipe concrete prefabrication assembly center pillar, includes roof, bottom plate and prefabrication center pillar, set up between roof and the bottom plate prefabrication center pillar, connect roof and bottom plate by prefabrication center pillar, prefabrication center pillar is steel pipe concrete column, prefabrication center pillar adopts mill prefabrication, the mode of assembling on site, can realize the construction of rapidness, prefabrication center pillar and be provided with flange joint spare between the roof;
the upper flange connecting piece comprises a first steel backing plate, a second steel backing plate, memory alloy connecting rods, an anchor and stiffening steel plates, wherein the first steel backing plate and the second steel backing plate are respectively arranged on the upper side and the lower side of a top plate, a plurality of memory alloy connecting rods penetrate through the top plate, the memory alloy connecting rods are round rod bodies made of unbonded shape memory alloy, two ends of each memory alloy connecting rod respectively extend and penetrate through the first steel backing plate and the second steel backing plate and are connected with the anchor, so that the upper flange connecting piece can be conveniently and firmly arranged on the top plate, the end part of a prefabricated center column is arranged on the second steel backing plate, a plurality of stiffening steel plates are arranged between the second steel backing plate and the prefabricated center column, and the installation of the prefabricated center column and the upper flange connecting piece is realized;
the prefabricated center column is provided with a lower flange connector between the bottom plate, and the lower flange connector and the upper flange connector are identical in structure.
Further, the cross section of the prefabricated center column is of a circular structure, the prefabricated center column is composed of a steel pipe and concrete poured in the steel pipe, and the concrete is made of concrete with ultrahigh strength and other performances; the upper end of the prefabricated center column is connected with the top plate through the upper flange connecting piece, and the lower end of the prefabricated center column is connected with the bottom plate through the lower flange connecting piece.
Furthermore, the first steel backing plate and the second steel backing plate are circular plates, the first steel backing plate, the top plate and the second steel backing plate are fixedly connected through the memory alloy connecting rods, a plurality of memory alloy connecting rods are circumferentially and uniformly distributed on the periphery of the prefabricated center pillar, so that the transverse displacement of the prefabricated center pillar can be limited, and the whole structure has a self-resetting function.
Further, the stiffening steel plate is one of a triangular plate or a trapezoid plate, and a plurality of stiffening steel plates are circumferentially and uniformly distributed on the periphery of the prefabricated center pillar, so that the effect of guaranteeing the connection stability of the prefabricated center pillar is achieved, and the memory alloy connecting rods are distributed between two adjacent stiffening steel plates.
Further, rubber shock pads are arranged between the joint surfaces of the first steel base plate, the second steel base plate and the top plate, the rubber shock pads can be tightly and firmly installed, meanwhile, earthquake energy can be consumed by the rubber shock pads, and damage to a center column-plate connecting node is reduced.
Further, the section of the second steel backing plate is in a convex shape, the end part of the prefabricated middle column is inserted into the convex position of the second steel backing plate, and a rubber damping ring is arranged between the two steel backing plates, and the self-resetting of the prefabricated middle column is realized by means of the elastic restoring force of the rubber damping ring, so that the stress of the prefabricated middle column is balanced.
Through the technical scheme, the utility model has the beneficial effects that:
the utility model has reasonable structural design, the prefabricated center column is a prefabricated structure, the core concrete has stronger compressive strength and deformation resistance by utilizing the cuff effect of the ultra-high-performance concrete and the steel pipe, and the strength of the prefabricated center column is improved. The prefabricated center pillar is integrated with the top and bottom plates by adopting flange connectors easy to replace, the flange connectors are assembled, the prefabricated center pillar is prefabricated by adopting a factory, and the construction means are assembled on site, so that the construction operation is convenient, the construction efficiency is high, the rapid construction can be realized, and the rapid replacement can be realized for the underground station center pillar damaged after earthquake.
The memory alloy connecting rod is made of unbonded shape memory alloy, when an earthquake is large, under the action of the memory alloy connecting rod, the plate and the center pillar are lifted off to avoid the node damage of the center pillar-plate, and meanwhile, the shape memory alloy is elongated to play a role in dissipating earthquake energy and providing self-resetting capability, so that good recovery performance after the earthquake has extremely important significance for the economic development of society.
The utility model adds the rubber shock pad and the ring on the basis of the action of the memory alloy connecting rod,
the rubber shock pad and the rubber shock-absorbing ring all have elastic buffer effect, and the shock attenuation of vertical direction can be realized to the rubber shock-absorbing pad, utilizes the rubber shock-absorbing ring to shock-absorbing in the horizontal direction, can improve the shock resistance of prefabricating the center pillar by a wide margin from this, improves the self-reset effect of structure after the shake, reduces the damage of structure.
Drawings
FIG. 1 is a front view of a self-resetting and replaceable underground station concrete filled steel tube precast and assembled center column of the present utility model.
FIG. 2 is a sectional view taken along A-A in FIG. 1 of a self-righting and replaceable underground station steel pipe concrete precast and assembled center column according to the present utility model.
FIG. 3 is a front view of the installation of a prefabricated center column and a middle plate of a self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center column.
Fig. 4 is a front view of the installation of a rubber shock pad in a second embodiment of a self-resetting and replaceable concrete filled steel tube precast and assembled center column for an underground station of the present utility model.
Fig. 5 is a front view of a rubber damping ring in a third embodiment of a self-resetting and replaceable concrete filled steel tube precast and assembled center column for an underground station.
The reference numerals in the drawings are: the steel plate comprises a top plate 1, a bottom plate 2, a prefabricated middle column 3, an upper flange connector 4, a first steel backing plate 42, a second steel backing plate 43, a memory alloy connecting rod 44, an anchor device 45, a stiffening steel plate 5, a rubber shock pad 6, a rubber shock absorbing ring 7, a lower flange connector 7 and a middle plate 8.
Detailed Description
The following detailed description of specific embodiments of the utility model refers to the accompanying drawings:
embodiment one:
as shown in figures 1-3, the self-resetting and replaceable underground station steel pipe concrete precast spliced center column comprises a top plate 1, a bottom plate 2 and a precast center column 3, wherein the top plate 1 and the bottom plate 2 can be built in a precast or cast-in-situ mode, the precast center column 3 is arranged between the top plate 1 and the bottom plate 2, and the top plate 1 and the bottom plate 2 are connected by the precast center column 3 to ensure the stability of the whole building structure.
The prefabricated center pillar 3 is different from a conventional reinforced concrete pouring structure, wherein the prefabricated center pillar 3 is a prefabricated structure and is prefabricated and maintained in a factory. The prefabricated center column 3 is a steel pipe concrete column, namely the prefabricated center column 3 is composed of a steel pipe and concrete poured in the steel pipe, the concrete adopts ultra-high performance concrete, and the cross section of the prefabricated center column 3 is of a circular structure.
An upper flange connector 4 is arranged between the prefabricated center column 3 and the top plate 1, and the upper end of the prefabricated center column 3 is connected with the top plate 1 through the upper flange connector 4.
The upper flange connector 4 comprises a first steel backing plate 41, a second steel backing plate 42, a memory alloy connecting rod 43, an anchor 44 and a stiffening steel plate 45. The first steel backing plate 41 and the second steel backing plate 42 are circular plates, and the first steel backing plate 41 and the second steel backing plate 42 are respectively arranged on the upper side and the lower side of the top plate 1.
The top plate 1 is penetrated with a plurality of memory alloy connecting rods 43, wherein the number of the memory alloy connecting rods 43 is eight. The memory alloy connecting rod 43 is a round rod body made of unbonded shape memory alloy, and the shape memory alloy has elastic deformation performance, so that the manufactured memory alloy connecting rod 43 can repeatedly deform back and forth and dissipate seismic energy when in earthquake.
Two ends of each memory alloy connecting rod 43 respectively extend and pass through the first steel backing plate 41 and the second steel backing plate 42 and then are connected with an anchor 44, the first steel backing plate 41, the top plate 1 and the second steel backing plate 42 are fixedly connected through eight memory alloy connecting rods 43, and the eight memory alloy connecting rods 43 are uniformly distributed on the circumference side of the prefabricated center column 3 in a circumferential direction. After the anchor 44 is arranged at the end part of the memory alloy connecting rod 43, the first steel backing plate 41 and the second steel backing plate 42 can be firmly and fixedly arranged at the two sides of the top plate 1.
When the memory alloy connecting rod 43 is installed, a hole for the memory alloy connecting rod 43 to penetrate is reserved in the top plate 1, holes for the memory alloy connecting rod 43 to penetrate are also formed in the first steel backing plate 41 and the second steel backing plate 42, the memory alloy connecting rod 43 penetrates into the corresponding holes, convenient installation of the memory alloy connecting rod 43 is achieved, and the whole upper flange connecting piece 4 can be fixed on the top plate 1.
When the upper end of the prefabricated center column 3 is connected with the upper flange connecting piece 4, the end part of the prefabricated center column 3 is welded and arranged on the second steel backing plate 42, a plurality of stiffening steel plates 45 are welded and arranged between the second steel backing plate 42 and the prefabricated center column 3, and the number of the stiffening steel plates 45 is eight. The stiffening steel plates 45 are triangular plates or trapezoidal plates, preferably, the stiffening steel plates 45 are trapezoidal plates, eight stiffening steel plates 45 are circumferentially and uniformly distributed on the circumference side of the prefabricated center column 3, and the memory alloy connecting rods 43 are arranged between two adjacent stiffening steel plates 45, namely the stiffening steel plates 45 and the memory alloy connecting rods 43 are circumferentially and alternately arranged.
The above is a connection structure between the upper end of the prefabricated center pillar 3 and the top plate 1, and the same structure is adopted between the lower end of the prefabricated center pillar 3 and the bottom plate 2. Specifically, be provided with down flange joint spare 7 between prefabricated center pillar 3 and the bottom plate 2, prefabricated center pillar 3 lower extreme is connected with bottom plate 2 through lower flange joint spare 7, and lower flange joint spare 7 is the same with last flange joint spare 4 structure, and prefabricated center pillar 3 both ends adopt the same structure to be installed fixedly with roof 1, bottom plate 2 promptly.
The principle of the utility model is as follows: the precast center column 3 is a precast structure of the steel tube concrete column, so that the concrete in the precast center column has stronger compressive strength and deformation resistance. The tip of prefabricating center pillar 3 is through upper and lower flange joint spare can dismantle with roof 1, bottom plate 2 respectively, and flange joint spare is a component of easily dismouting, change, can realize prefabricating center pillar 3, roof 1 and bottom plate 2 and connect as a whole, therefore prefabricating center pillar 3 has removable characteristics, under the effect of accidental load or seismic load, prefabricating center pillar 3 takes place to destroy the back, according to original size in the prefabricated center pillar 3 of mill processing, transport to the ground car station place and replace prefabricating center pillar 3 that damages can.
The flange connecting pieces at the upper and lower positions are installed with the plates through the memory alloy connecting rods 43 made of unbonded shape memory alloy, when an earthquake happens, the plates are lifted away from the prefabricated center posts 3, so that the damage of the joints of the prefabricated center posts 3 and the plates is avoided, meanwhile, the shape memory alloy is lengthened to exert the dissipation of earthquake energy, and the memory alloy connecting rods 43 provide self-resetting capability for the prefabricated center posts 3 which displace under the earthquake action.
The utility model can be applied not only to the connection of the top plate 1, the bottom plate 2 and the middle column of the single-layer underground station, but also to the connection of the middle plate 8 and the middle column of the double-layer or multi-layer underground station. Therefore, the embodiment further comprises a middle plate 8, and the steel backing plate two 42 and the stiffening steel plate 45 are connected and combined into a unit, the unit is arranged on the upper side and the lower side of the middle plate 8, and the two units are matched and fixed through the memory alloy connecting rod 43 and the anchorage device 44, as shown in fig. 3.
The utility model has the following advantages: 1. factory manufacturing and processing are carried out on the underground station to assemble after the member is manufactured, so that the construction progress is accelerated, rapid construction is realized, the structural durability can meet the requirements, and the influence on the periphery of projects is reduced. 2. For the post-earthquake damaged center pillar of the underground station, the quick replacement can be realized, the traffic can be recovered in time, and the good post-earthquake recovery performance has extremely important significance for the economic development of society. 3. The unbonded shape memory alloy is introduced, so that the structure can be assisted to dissipate earthquake energy, effective protection is formed for the prefabricated middle column 3, the damage after the earthquake is very easy to find, the replacement time is less, and the self-resetting capability is provided. 4. Can be used for the construction of single-layer, double-layer or multi-layer underground stations.
Embodiment two:
the first embodiment is basically the same as the first embodiment, and the same points are not repeated, except that: rubber shock pads 5 are arranged between the joint surfaces of the first steel backing plate 41 and the second steel backing plate 42 and the top plate 1, and meanwhile under the anchoring action of the memory alloy connecting rod 43, the rubber shock pads 5 are tightly combined with the upper flange connecting piece 4, so that the shock resistance of the prefabricated middle column 3 under vertical earthquake load is improved, the effect of vertical shock absorption is achieved, and the damage of earthquake energy to the joint of the prefabricated middle column 3 and the top plate 1 and the bottom plate 2 can be reduced, as shown in fig. 4. Likewise, rubber shock pads 5 can also be used in the lower flange connection 7.
Embodiment III:
the first embodiment is basically the same as the first embodiment, and the same points are not repeated, except that: the section of the second steel backing plate 42 is in a convex shape, namely, the second steel backing plate 42 is a convex-shaped disc body, and the end part of the prefabricated middle column 3 is inserted into the convex position of the second steel backing plate 42 and a rubber damping ring 6 is arranged between the two. The bulge is circular, the rubber damping ring 6 is sleeved on the bulge, the end part of the prefabricated center pillar 3 is inserted on the bulge, and the rubber damping ring 6 is tightly attached to the inner wall of the steel pipe of the prefabricated center pillar 3, as shown in fig. 5.
Therefore, the prefabricated middle column 3 and the steel backing plate II 42 are connected more reliably, the rubber damping ring 6 can resist shearing force in the horizontal direction, the prefabricated middle column 3 is self-reset by means of the elasticity of the rubber damping ring 6, and the prefabricated middle column 3 is restored to the state before an earthquake due to the effect of alloy connection.
The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present utility model.
Claims (6)
1. The utility model provides a precast spliced center column of self-resetting and removable underground station steel pipe concrete, includes roof (1), bottom plate (2) and precast center column (3), set up between roof (1) and bottom plate (2) precast center column (3), its characterized in that, precast center column (3) are steel pipe concrete column, precast center column (3) with be provided with between roof (1) flange joint spare (4);
the upper flange connecting piece (4) comprises a first steel backing plate (41), a second steel backing plate (42), memory alloy connecting rods (43), an anchor (44) and a stiffening steel plate (45), wherein the first steel backing plate (41) and the second steel backing plate (42) are respectively arranged on the upper side and the lower side of a top plate (1), a plurality of memory alloy connecting rods (43) penetrate through the top plate (1), the memory alloy connecting rods (43) are round rod bodies made of unbonded shape memory alloy, two ends of each memory alloy connecting rod (43) respectively extend and penetrate through the first steel backing plate (41) and the second steel backing plate (42) and then are connected with the anchor (44), the end parts of the prefabricated middle columns (3) are arranged on the second steel backing plate (42), and a plurality of stiffening steel plates (45) are arranged between the second steel backing plate (42) and the prefabricated middle columns (3);
the prefabricated center column (3) and the bottom plate (2) are provided with lower flange connectors (7), and the lower flange connectors (7) and the upper flange connectors (4) are identical in structure.
2. The self-resetting and replaceable underground station steel pipe concrete prefabricated spliced center column according to claim 1, wherein the cross section of the prefabricated center column (3) is of a circular structure, and the prefabricated center column (3) is composed of a steel pipe and concrete poured in the steel pipe;
the upper end of the prefabricated middle column (3) is connected with the top plate (1) through the upper flange connecting piece (4), and the lower end of the prefabricated middle column (3) is connected with the bottom plate (2) through the lower flange connecting piece (7).
3. The self-resetting and replaceable underground station steel tube concrete prefabricated assembled center column according to claim 1 is characterized in that a first steel base plate (41) and a second steel base plate (42) are circular plates, the first steel base plate (41), a top plate (1) and the second steel base plate (42) are fixedly connected through memory alloy connecting rods (43), and a plurality of the memory alloy connecting rods (43) are distributed on the periphery of the prefabricated center column (3) in an annular mode.
4. A self-resetting and replaceable precast concrete filled steel tube spliced central column for an underground station according to claim 3, wherein the stiffening steel plates (45) are triangular plates or trapezoidal plates, a plurality of stiffening steel plates (45) are uniformly distributed on the periphery of the precast central column (3) in a circumferential direction, and the memory alloy connecting rods (43) are arranged between two adjacent stiffening steel plates (45).
5. The self-resetting and replaceable underground station steel tube concrete prefabricated assembled center column according to claim 1, wherein rubber shock pads (5) are arranged between the joint surfaces of the first steel base plate (41), the second steel base plate (42) and the top plate (1).
6. The self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center pillar according to claim 1, wherein the section of the second steel backing plate (42) is in a convex shape, and the end part of the prefabricated center pillar (3) is inserted into the convex position of the second steel backing plate (42) and is provided with a rubber damping ring (6) between the two steel backing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321682411.4U CN220013769U (en) | 2023-06-29 | 2023-06-29 | Self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321682411.4U CN220013769U (en) | 2023-06-29 | 2023-06-29 | Self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center column |
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| CN220013769U true CN220013769U (en) | 2023-11-14 |
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|---|---|---|---|
| CN202321682411.4U Active CN220013769U (en) | 2023-06-29 | 2023-06-29 | Self-resetting and replaceable underground station concrete filled steel tube prefabricated assembled center column |
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| Country | Link |
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| CN (1) | CN220013769U (en) |
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2023
- 2023-06-29 CN CN202321682411.4U patent/CN220013769U/en active Active
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