CN111945772B - Up-down separated sliding shear-resistant bearing platform pier and bridge high-pier anti-seismic hydraulic bearing platform foundation - Google Patents
Up-down separated sliding shear-resistant bearing platform pier and bridge high-pier anti-seismic hydraulic bearing platform foundation Download PDFInfo
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- CN111945772B CN111945772B CN202010697190.2A CN202010697190A CN111945772B CN 111945772 B CN111945772 B CN 111945772B CN 202010697190 A CN202010697190 A CN 202010697190A CN 111945772 B CN111945772 B CN 111945772B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Abstract
The invention provides an up-down separated type sliding shear-resistant bearing platform pier and a bridge high pier anti-seismic hydraulic bearing platform foundation, wherein the up-down separated type sliding shear-resistant bearing platform pier comprises a T-shaped rock-socketed pile, an inverted T-shaped reinforced concrete column, a sinking foundation pit-shaped equipment room and a plurality of hydraulic clamp modules; the lower end face of the inverted T-shaped reinforced concrete is connected with the upper end face of the T-shaped socketed pile in a sliding manner; the bridge high-pier anti-seismic hydraulic bearing platform foundation comprises a parallel high-pier bearing platform which is connected between a plurality of up-down separated sliding shear-resistant bearing platform piers and piers. Under a normal state, the hydraulic arm extends, and the plurality of hoops wrap the periphery of the upper horizontal table top to limit the horizontal displacement of the upper horizontal table top; under the earthquake state, the hydraulic arm retracts, so that the lower end face of the inverted T-shaped reinforced concrete can horizontally and freely slide on the upper end face of the T-shaped rock-socketed pile, the bearing pier and the bearing platform foundation can horizontally and freely slide in a certain range, horizontal restraint is released, the earthquake transverse shearing action is resisted under certain displacement permission, the earthquake-resistant function is completed, and the bridge is protected.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering, in particular to an up-down separated sliding shear-resistant bearing platform pier and a bridge high-pier anti-seismic hydraulic bearing platform foundation.
Background
The damage of the bridge caused by the earthquake is mainly caused by the damage of the earth surface and the shock damage of the bridge. The bridge is damaged by earthquake, namely, the bridge generates horizontal and vertical vibration due to the earthquake, so that bridge members are damaged and damaged, and even the bridge is collapsed. The surface destruction has the phenomena of ground crack, landslide, bank slope slip, sandy soil liquefaction and the like. Ground cracks can cause shortening, lengthening or sinking of the bridge span. In steep mountainous areas or sandy soil and soft clay river banks, collapse, bank slope sliding and falling of mountain stones caused by strong earthquakes can damage the bridge. At shallow saturated loose sandy soil, the sandy soil is easy to liquefy under the action of earthquake, so that the bridge suddenly sinks or unevenly sinks, and even topples over. At the slope soil bank or the ancient river channel, the phenomena of bank slope slippage, cracking, collapse and the like are often caused by earthquakes, and the bridge is damaged.
The ground surface damage can cause the pier to move transversely to a large extent, so that the pier generates large transverse shearing force. The connection of the pier, the ground and the bridge deck in the prior art is designed with a horizontal damping structure, but the horizontal damping structure still has a constraint effect on the pier and is difficult to adapt to the transverse shearing force caused by large-amplitude and rapid horizontal displacement under the extreme condition of earthquake.
Disclosure of Invention
In order to solve the problems, the invention provides an up-and-down separated sliding shear-resistant bearing platform pier and a bridge high-pier anti-seismic hydraulic bearing platform foundation.
The technical scheme is as follows: the invention provides an up-down separated sliding shear-resistant bearing pier which comprises a T-shaped rock-socketed pile, an inverted T-shaped reinforced concrete column, a sinking foundation pit-shaped equipment room and a plurality of hydraulic clamp modules, wherein the T-shaped rock-socketed pile is arranged on the upper surface of the sinking foundation pit-shaped equipment room;
the T-shaped socketed pile comprises a vertical pile body and a lower horizontal platform surface fixed at the top of the vertical pile body; the inverted T-shaped reinforced concrete column comprises a vertical column body and an upper horizontal table top fixed at the bottom of the vertical column body; the inverted T-shaped reinforced concrete column is arranged above the T-shaped rock-socketed pile, and the lower end face of the upper horizontal table top is connected with the upper end face of the lower horizontal table top in a sliding manner; the lower end surface of the upper horizontal table top is positioned in a projection area where the upper end surface of the lower horizontal table top is positioned;
the sinking foundation pit-shaped equipment room is arranged under the ground; the inner side wall of the sinking foundation pit-shaped equipment room is a counterforce wall for bearing pressure; the upper horizontal table surface and the lower horizontal table surface are both positioned in the sinking foundation pit-shaped equipment chamber;
each hydraulic clamp module comprises a hydraulic arm and a clamp; one end of the hydraulic arm is fixed on the inner side wall of the sinking foundation pit-shaped equipment room, and the other end of the hydraulic arm is fixedly connected with the clamp;
under a normal state, the hydraulic arm extends, and the plurality of hoops wrap the periphery of the upper horizontal table top to limit the horizontal displacement of the upper horizontal table top;
under the earthquake state, the hydraulic arm retracts, and the plurality of hoops are positioned on the periphery of the lower horizontal table surface, so that the upper horizontal table surface can horizontally and freely slide in the projection area where the upper end surface of the lower horizontal table surface is positioned.
Further, the upper horizontal table surface and the lower horizontal table surface are both cylindrical.
Further, the number of the hydraulic hoop modules is at least three; and are symmetrically distributed along the center of the T-shaped socketed pile.
Furthermore, a ball is arranged between the lower end surface of the upper horizontal table top and the upper end surface of the lower horizontal table top.
Furthermore, the clamp is a U-shaped groove with a horizontal opening and comprises an upper limiting surface, a lower limiting surface and a horizontal limiting surface;
under the normal state, the upper limiting surface is connected with the upper end surface of the upper horizontal table surface, and the lower limiting surface is connected with the lower end surface of the lower horizontal table surface; the horizontal limiting surface is connected with the side wall of the upper horizontal table surface.
A valley bridge high pier anti-seismic hydraulic bearing platform foundation comprises a parallel high pier bearing platform; the upper end surface of the parallel high-pier cushion cap is fixedly connected with a pier;
the device also comprises a plurality of up-down separated sliding shear-resistant bearing platform piers; the plurality of upper and lower separated sliding anti-shearing bearing piers are distributed below the parallel high-pier bearing platform, and the upper end surface of the inverted T-shaped reinforced concrete column of each upper and lower separated sliding anti-shearing bearing pier is fixedly connected with the lower end surface of the parallel high-pier bearing platform.
Further, the earthquake motion monitoring system also comprises an earthquake motion sensor and a controller; the earthquake motion sensor is arranged at the top of the pier, comprises an acceleration sensor and a displacement sensor and is used for detecting earthquake motion signals; and the controller receives signals of the earthquake motion sensor and controls the hydraulic arm to stretch and retract.
Has the advantages that: in a normal state, the hydraulic arm extends, the upper limiting surface of the hoop is connected with the upper end surface of the upper horizontal table surface, and the lower limiting surface is connected with the lower end surface of the lower horizontal table surface; the horizontal limiting surface is connected with the side wall of the upper horizontal table surface; the clamp hoop limits the horizontal displacement of the upper horizontal table top; and meanwhile, the lower end surface of the upper horizontal table top is tightly connected with the upper end surface of the lower horizontal table top, so that the canyon bridge high pier anti-seismic hydraulic bearing platform foundation has good stability.
Under the earthquake state, the hydraulic arm retracts, the plurality of hoops are positioned on the periphery of the lower horizontal table surface, so that the upper horizontal table surface horizontally and freely slides in the projection area where the upper end surface of the lower horizontal table surface is positioned, the horizontal constraint is released, the earthquake transverse shearing action is resisted under a certain displacement permission degree, the earthquake-resistant function is completed on the premise of no damage to the bridge, and the upper bridge structure is protected; meanwhile, the position of the horizontal limiting surface does not exceed the edge of the lower platform surface, and the horizontal limiting surface still plays a limiting role, so that the inverted T-shaped reinforced concrete column is prevented from overturning due to the fact that the upper horizontal platform surface is separated from the upper end surface of the lower platform surface.
The plurality of up-down separated sliding shear-resistant bearing platform piers are connected in parallel through the parallel high pier bearing platform to share the load from the piers.
The earthquake motion sensor and the controller are used for automatic control, earthquake fortification is completed in a short time, and secondary damage caused by aftershock is effectively prevented.
Drawings
FIG. 1 is a schematic structural view of an upper and lower separated sliding shear-resistant bearing block of the present invention;
fig. 2 is a schematic structural diagram of a canyon bridge high-pier anti-seismic hydraulic cushion cap foundation of the invention.
Detailed Description
The invention provides an up-down separated sliding shear-resistant bearing pier which comprises a T-shaped rock-socketed pile, an inverted T-shaped reinforced concrete column, a sinking foundation pit-shaped equipment room 3 and a plurality of hydraulic clamp modules.
The T-shaped socketed pile comprises a vertical pile body 101 and a lower horizontal platform surface 102 fixed at the top of the vertical pile body 101; the inverted T-shaped reinforced concrete column comprises a vertical column body 201 and an upper horizontal table top 202 fixed at the bottom of the vertical column body 201; the upper horizontal platform 202 and the lower horizontal platform 102 are both cylindrical.
The inverted T-shaped reinforced concrete column is arranged above the T-shaped socketed pile, and the lower end surface of the upper horizontal table surface 202 is connected with the upper end surface of the lower horizontal table surface 102 in a sliding manner; a ball is arranged between the lower end surface of the upper horizontal table surface 202 and the upper end surface of the lower horizontal table surface 102, and is used for sliding of the contact surface.
The lower end surface of the upper horizontal table 202 is located in the projection area of the upper end surface of the lower horizontal table 102.
The sinking foundation pit-shaped equipment room 3 is arranged below the ground; the inner side wall of the sinking foundation pit-shaped equipment room 3 is a counterforce wall for bearing pressure; the upper horizontal table surface 202 and the lower horizontal table surface 102 are both positioned in the sinking foundation pit-shaped equipment room 3;
the number of the hydraulic hoop modules is at least three; and are symmetrically distributed along the center of the T-shaped socketed pile.
Each hydraulic clamp module comprises a hydraulic arm 401 and a clamp 402; one end of the hydraulic arm 401 is fixed on the inner side wall of the sinking foundation pit-shaped equipment room 3, and the other end is fixedly connected with the clamp 402. The clamp 402 is a U-shaped groove with a horizontal opening, and comprises an upper limit surface, a lower limit surface and a horizontal limit surface.
In a normal state, the hydraulic arm 401 extends, the upper limiting surface of the hoop 402 is connected with the upper end surface of the upper horizontal table surface 202, and the lower limiting surface is connected with the lower end surface of the lower horizontal table surface 102; the horizontal limiting surface is connected with the side wall of the upper horizontal table surface 202. The collar 402 limits the horizontal displacement of the upper horizontal table 202; while the lower end surface of the upper horizontal table top 202 is tightly connected with the upper end surface of the lower horizontal table top 102.
Under the earthquake state, the hydraulic arm 401 retracts, the plurality of clamps 402 are positioned on the periphery of the lower horizontal table surface 102, so that the upper horizontal table surface 202 horizontally and freely slides in a projection area where the upper end surface of the lower horizontal table surface 102 is positioned, the horizontal constraint is released, the earthquake transverse shearing action is resisted under a certain displacement permission degree, the earthquake resistant function is completed on the premise of no damage to the bridge, and the upper bridge structure is protected; meanwhile, the position of the horizontal limiting surface does not exceed the edge of the lower platform surface 102, and the horizontal limiting surface still plays a limiting role, so that the inverted T-shaped reinforced concrete column is prevented from overturning due to the fact that the upper horizontal platform surface 202 is separated from the upper end surface of the lower platform surface 102.
A canyon bridge high pier anti-seismic hydraulic bearing platform foundation comprises a parallel high pier bearing platform 5; and the upper end surface of the parallel high-pier cushion cap 5 is fixedly connected with the pier 6.
The valley bridge high pier anti-seismic hydraulic cushion cap foundation further comprises a plurality of up-down separated sliding anti-shear cushion cap piers; the plurality of up-down separated sliding anti-shearing bearing piers are distributed below the parallel high-pier bearing platform 5, and the upper end surface of the inverted T-shaped reinforced concrete column of each up-down separated sliding anti-shearing bearing pier is fixedly connected with the lower end surface of the parallel high-pier bearing platform 5. The plurality of up-down separated sliding shear-resistant bearing platform piers are connected in parallel through the parallel high pier bearing platform 5 to share the load from the pier 6.
The valley bridge high pier anti-seismic hydraulic cushion cap foundation further comprises an earthquake motion sensor and a controller; the earthquake motion sensor is arranged at the top of the pier 6, comprises an acceleration sensor and a displacement sensor and is used for detecting earthquake motion signals; the controller receives signals of the seismic sensor and controls the hydraulic arm 401 to stretch and contract.
Claims (7)
1. The utility model provides a from top to bottom disconnect-type slip anti-shear socket pier which characterized in that: the device comprises a T-shaped socketed pile, an inverted T-shaped reinforced concrete column, a sinking foundation pit-shaped equipment room (3) and a plurality of hydraulic clamp modules;
the T-shaped socketed pile comprises a vertical pile body (101) and a lower horizontal platform surface (102) fixed at the top of the vertical pile body (101); the inverted T-shaped reinforced concrete column comprises a vertical column body (201) and an upper horizontal table top (202) fixed at the bottom of the vertical column body (201); the inverted T-shaped reinforced concrete column is arranged above the T-shaped socketed pile, and the lower end surface of the upper horizontal table surface (202) is connected with the upper end surface of the lower horizontal table surface (102) in a sliding manner; the lower end surface of the upper horizontal table top (202) is positioned in a projection area where the upper end surface of the lower horizontal table top (102) is positioned;
the sinking foundation pit-shaped equipment room (3) is arranged under the ground; the inner side wall of the sinking foundation pit-shaped equipment room (3) is a counterforce wall for bearing pressure; the upper horizontal table top (202) and the lower horizontal table top (102) are both positioned in the sinking foundation pit-shaped equipment room (3);
each hydraulic clamp module comprises a hydraulic arm (401) and a clamp (402); one end of the hydraulic arm (401) is fixed on the inner side wall of the sinking foundation pit-shaped equipment chamber (3), and the other end of the hydraulic arm is fixedly connected with the clamp (402);
under a normal state, the hydraulic arm (401) extends, and a plurality of hoops (402) wrap the periphery of the upper horizontal table top (202) to limit the horizontal displacement of the upper horizontal table top (202);
under the earthquake state, the hydraulic arm (401) retracts, and the plurality of clamps (402) are positioned on the periphery of the lower horizontal table surface (102), so that the upper horizontal table surface (202) can horizontally and freely slide in the projection area where the upper end surface of the lower horizontal table surface (102) is positioned.
2. The split-top sliding shear bearing pier as claimed in claim 1, wherein: the upper horizontal table top (202) and the lower horizontal table top (102) are both cylindrical.
3. The split-top sliding shear bearing pier as claimed in claim 2, wherein: the number of the hydraulic hoop modules is at least three; and are symmetrically distributed along the center of the T-shaped socketed pile.
4. The split-top sliding shear bearing pier as claimed in claim 3, wherein: and balls are arranged between the lower end surface of the upper horizontal table top (202) and the upper end surface of the lower horizontal table top (102).
5. The split-top sliding shear bearing pier as claimed in claim 4, wherein: the clamp (402) is a U-shaped groove with a horizontal opening and comprises an upper limiting surface, a lower limiting surface and a horizontal limiting surface;
under the normal state, the upper limiting surface is connected with the upper end surface of the upper horizontal table surface (202), and the lower limiting surface is connected with the lower end surface of the lower horizontal table surface (102); the horizontal limiting surface is connected with the side wall of the upper horizontal table surface (202).
6. An anti-seismic hydraulic bearing platform foundation of a canyon bridge high pier, based on the up-and-down separated sliding anti-shear bearing platform pier as claimed in any one of claims 1-5, characterized in that: comprises a parallel high pier bearing platform (5); the upper end surface of the parallel high pier bearing platform (5) is fixedly connected with a pier (6);
the device also comprises a plurality of up-down separated sliding shear-resistant bearing platform piers; the plurality of up-down separated sliding anti-shearing bearing piers are distributed below the parallel high-pier bearing platform (5), and the upper end surface of the inverted T-shaped reinforced concrete column of each up-down separated sliding anti-shearing bearing pier is fixedly connected with the lower end surface of the parallel high-pier bearing platform (5).
7. The canyon bridge high pier seismic hydraulic cushion cap foundation of claim 6, wherein: the earthquake motion sensor and the controller are also included; the earthquake motion sensor is arranged at the top of the pier (6), comprises an acceleration sensor and a displacement sensor and is used for detecting earthquake motion signals; the controller receives signals of the seismic sensor and controls the hydraulic arm (401) to stretch and retract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010697190.2A CN111945772B (en) | 2020-07-20 | 2020-07-20 | Up-down separated sliding shear-resistant bearing platform pier and bridge high-pier anti-seismic hydraulic bearing platform foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010697190.2A CN111945772B (en) | 2020-07-20 | 2020-07-20 | Up-down separated sliding shear-resistant bearing platform pier and bridge high-pier anti-seismic hydraulic bearing platform foundation |
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| Publication Number | Publication Date |
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| CN111945772A CN111945772A (en) | 2020-11-17 |
| CN111945772B true CN111945772B (en) | 2021-07-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW554124B (en) * | 2002-07-10 | 2003-09-21 | Chung-Shien Tsai | An earthquake energy converter |
| JP2007051438A (en) * | 2005-08-16 | 2007-03-01 | Railway Technical Res Inst | Sliding-type pile-head base-isolating device capable of controlling direction of displacement |
| CN103643627A (en) * | 2013-12-20 | 2014-03-19 | 中铁二院工程集团有限责任公司 | Damping structure for continuous rigid frame pier with limited constraint |
| CN105908770A (en) * | 2016-06-03 | 2016-08-31 | 河海大学 | Novel building vibration isolation base |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6572071B1 (en) * | 2001-11-16 | 2003-06-03 | Chung-Shien Tsai | Shock eliminator |
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2020
- 2020-07-20 CN CN202010697190.2A patent/CN111945772B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW554124B (en) * | 2002-07-10 | 2003-09-21 | Chung-Shien Tsai | An earthquake energy converter |
| JP2007051438A (en) * | 2005-08-16 | 2007-03-01 | Railway Technical Res Inst | Sliding-type pile-head base-isolating device capable of controlling direction of displacement |
| CN103643627A (en) * | 2013-12-20 | 2014-03-19 | 中铁二院工程集团有限责任公司 | Damping structure for continuous rigid frame pier with limited constraint |
| CN105908770A (en) * | 2016-06-03 | 2016-08-31 | 河海大学 | Novel building vibration isolation base |
Non-Patent Citations (1)
| Title |
|---|
| 浅谈桥梁结构抗震设计;陈彪来等;《甘肃科技纵横》;20100630(第03期);全文 * |
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