CN101408024A - Undercrossing subway tunnel pit supporting and protecting structure of high-rise building or super high-rise building - Google Patents
Undercrossing subway tunnel pit supporting and protecting structure of high-rise building or super high-rise building Download PDFInfo
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- CN101408024A CN101408024A CNA2008102190202A CN200810219020A CN101408024A CN 101408024 A CN101408024 A CN 101408024A CN A2008102190202 A CNA2008102190202 A CN A2008102190202A CN 200810219020 A CN200810219020 A CN 200810219020A CN 101408024 A CN101408024 A CN 101408024A
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Abstract
The invention discloses an under penetrating metro tunnel foundation pit supporting structure of high-rise or super high-rise buildings, which comprises supporting piles (1), a steel framework supporting structure (2) and a structure underpinning plate (3); the supporting piles (1) are arranged at the two outer lateral surfaces of the metro tunnel, the structure underpinning plate (3) is arranged above the metro tunnel, one end of the steel framework supporting structure (2) is fixedly connected with the supporting pile (1), and the other end of the steel framework supporting structure (2) is fixed with the structure underpinning plate (3), thus forming the deep foundation pit supporting structure that the structure underpinning plate (3) is arranged on the supporting pile (1) in a bridge connection way by the steel framework supporting structure (2). The supporting structure causes the structure underpinning plate not to directly or indirectly act on the tunnel top, thus avoiding the damage to the tunnel top caused by the self weight of the structure underpinning plate.
Description
Technical field
The present invention relates to a kind of building foundation pit supporting structure, the following subway tunnel foundation pit supporting construction of wearing of particularly a kind of high level or super highrise building.Belong to the geotechnic engineering construction field.
Background technology
The development of urban construction has driven the development that the underground space is built, and all kinds of underground spaces are grown up by people gradually and are used for various uses.Subterranean railway more and more is subject to people's attention as a kind of important urban track traffic instrument of 21 century.Yet the subway sectional tunnels that built up of great majority all are that the 5m scope is passed through under the building basement yet to be built, and this causes certain difficulty for the foundation pit construction between super high rise building and subway tunnel.In the prior art, the foundation pit supporting construction that building yet to be built is gone up on the subway tunnel top generally is that the structure base plate is directly or indirectly acted on the railway tunnel top, can prevent from although it is so when excavation pit, to produce distortion owing to the soil body rebound deformation at the bottom of the foundation ditch causes the tunnel, but also there is following defective in this supporting and protection structure: (2) are positioned at the deadweight of subway tunnel superstructure base plate, will be directly or draw and to be delivered to tunnel top, easily the tunnel is damaged; (2) mass loading of superelevation layer yet to be built or highrise building can make the structure base plate produce certain deflection deformation, and the power that echos that is diffused into the top, tunnel also can produce the tunnel to be destroyed.
Summary of the invention
Purpose of the present invention, be to produce the defective of destroying to the tunnel, the following subway tunnel foundation pit supporting construction of wearing of a kind of high level or super highrise building is provided in order to overcome the supporting and protection structure middle and upper part structure base plate that has super highrise building now and wear deep foundation ditch between subway tunnel down.
Purpose of the present invention can be achieved by taking following technical scheme:
The following subway tunnel foundation pit supporting construction of wearing of high level or super highrise building, comprise that soldier pile, steelframe structure braced structures and structure underpin plate, soldier pile is arranged on two lateral surfaces of subway tunnel, structure underpins plate and is arranged on underground tunnel upper, one end of steelframe structure braced structures is fixedlyed connected with soldier pile, the other end of steelframe structure braced structures and structure underpin plate and fix, and form structure and underpin plate and be connected across foundation pit supporting construction on the soldier pile by steelframe structure braced structures.
Purpose of the present invention can also be achieved by taking following technical scheme:
A kind of embodiment of the present invention is: the absolute altitude place that underpins plate in structure is provided with reinforced concrete brace, fixedlys connected with soldier pile in the two ends of reinforced concrete brace.
A kind of embodiment of the present invention is: underpin between plate and the foundation ditch ground bottom in structure and be provided with abscission layer.
A kind of embodiment of the present invention is: the minimum perpendicular distance that structure underpins between the subway tunnel top of the bottom of plate and its respective range is at least 5 meters.
A kind of embodiment of the present invention is: the minimum vertical clear distance at the subway tunnel top of the bottom of described soldier pile and its respective range is at least 5 meters.
Compared with prior art, the present invention has the following advantages:
Supporting and protection structure of the present invention adds brace summer by the steel lattice to be made structure underpin plate to be connected across on the soldier pile above the both sides, subway tunnel top, directly or indirectly not act on the top, tunnel, and the deadweight of having avoided structure to underpin plate is delivered to that the top, tunnel is gone up and to the destruction in tunnel; In addition, the structure of supporting and protection structure of the present invention underpins between plate and the foundation ditch bottom and is provided with abscission layer, and structure underpins between plate, soldier pile and top, tunnel and maintain minimum 5 meters vertical clearance, guarantees that building settlement and deflection deformation can be to the destructions of subway tunnel.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
Specific embodiment 1
As shown in Figure 1, the supporting and protection structure of deep foundation ditch of the present invention, comprise that soldier pile 1, steelframe structure braced structures 2 and structure underpin plate 3, soldier pile 1 is arranged on two lateral surfaces of subway tunnel, structure underpins plate 3 and is arranged on underground tunnel upper, one end of steelframe structure braced structures 2 is fixedlyed connected with soldier pile 1, it is fixing that the other end of steelframe structure braced structures 2 and structure underpin plate 3, form structure and underpin the deep foundation pit supporting structure that plate 3 is connected across on the soldier pile 1 by steelframe structure braced structures 2, described soldier pile 1 is the construction hand excavated pile in early stage.
Make structure underpin plate to be connected across on the soldier pile above the both sides, subway tunnel top, directly or indirectly not act on the top, tunnel because supporting and protection structure adds brace summer by the steel lattice, thereby the deadweight of having avoided structure to underpin plate is delivered to that the top, tunnel is gone up and to the destruction in tunnel.
Present embodiment is applied to wear under No. five lines of subway in plot, east wind square, GuangZhou, Guangdong Province city the foundation pit construction of subway tunnel.This plot is positioned on the south the Tianhe Road, Guangzhou City, to the east of the plum blossom road, to the north of the east wind East Road, to the west of the GuangZhou Road.Station, No. five line zoological parks of described subway～poplar dustpan station shield structure running tunnel passes from the residential building (23 floor) of this northwest corner, plot, commercial annex (4 floor) the basement below of southwest corner.2 layers of this project basements, about 12542 square metres of excavation of foundation pit area, about 7.9～11.6 meters of the degree of depth, 702 meters of Zhou Changyue, the support form of support and anchor cable in employing hand excavated pile+steel concrete.Consider of the influence of loam cake building load, adopt transformational structure (hand excavated pile (stake in early stage)+RC Transfer Plates) to avoid subway tunnel at underground tunnel upper to subway tunnel.Be positioned at 5 meters of the minimum vertical clear distances that push up with the subway tunnel structure of respective range at the bottom of the soldier pile stake directly over the subway tunnel.The no fixed section of foundation pit supporting pile.
In order to satisfy the requirement of subway protection, in the present embodiment: be positioned at 5 meters of the minimum vertical clear distances that push up with the subway tunnel structure of respective range at the bottom of the soldier pile stake directly over the subway tunnel; Be positioned at 5 meters of the minimum vertical clear distances on the subway tunnel structure top of change-over panel structure at the bottom of the foundation ditch of residential district and respective range.
According to the design scheme of present embodiment, first, second road is supported for steel concrete and supports, and the 3rd road is supported for the steel latticework brace summer, is arranged on structure base plate absolute altitude place, solves the problem of the fixed section of bracing of foundation pit stake.During foundation pit construction, steel latticework brace summer one end is supported on the soldier pile, the other end directly support underpins on the plate in the mid-section body structure, has solved the not enough problem of fixed section.
Be interval shield tunnel construction safety of No. five lines of protection subway and metro operation phase waterproof requirement; design and construction to five phase of east wind square engineering subway top deep foundation pit supporting structure design and construction and loam cake high-rise building deep foundation proposes new requirement, guarantees to construct and this item base is diffused into subway tunnel structure top between the operating period subsidiary stress is not more than 20kpa.
Deadweight such as superstructure and base plate must reach the stake in early stage, must not directly or indirectly be pressed on the tunnel, fully takes precautions against building settlement and the deflection deformation destruction to subway tunnel in the design and construction, and the ground interlayer is established abscission layer at the bottom of employing change-over panel and the foundation ditch.
The principle of should follow subregion, piecemeal, layering, symmetry during excavation of foundation pit, prescribing a time limit, and exposed area should be too not big, the time should be not oversize, in time returns and do, guarantee not because of come-up accident at the bottom of excavation unloading initiation foundation ditch.
The characteristics of present embodiment: the absolute altitude place that underpins plate 3 in structure is provided with reinforced concrete brace 4, fixedlys connected with soldier pile 1 in the two ends of reinforced concrete brace 4, and all the other are with embodiment 1.
The characteristics of present embodiment: underpin between plate 3 and foundation ditch ground bottom in structure and to be provided with abscission layer 5, guarantee that building settlement and deflection deformation can be to the destructions of subway tunnel, all the other are with embodiment 2.
Specific embodiment 4
The characteristics of present embodiment: it is 5 meters that structure underpins the plate 3 knot minimum vertical clear distance that subway tunnel 6 structures of the end and its respective range push up that hardens, and all the other are with embodiment 3.
The characteristics of present embodiment: the minimum vertical clear distance with the subway tunnel 6 structures top of its respective range at the bottom of 1 of the soldier pile is 5 meters, and all the other are with embodiment 3.
Claims (5)
1, the following subway tunnel foundation pit supporting construction of wearing of high level or super highrise building, it is characterized in that: comprise soldier pile (1), steelframe structure braced structures (2) and structure underpin plate (3), soldier pile (1) is arranged on two lateral surfaces of subway tunnel, structure underpins plate (3) and is arranged on underground tunnel upper, one end of steelframe structure braced structures (2) is fixedlyed connected with soldier pile (1), the other end of steelframe structure braced structures (2) underpins plate (3) with structure fixedlys connected, and forms structure and underpins plate (3) and be connected across foundation pit supporting construction on the soldier pile (1) by steelframe structure braced structures (2).
2, foundation pit supporting construction according to claim 1 is characterized in that: the absolute altitude place that underpins plate (3) in structure is provided with reinforced concrete brace (4), fixedlys connected with soldier pile (1) in the two ends of reinforced concrete brace (4).
3, foundation pit supporting construction according to claim 2 is characterized in that: underpin between plate (3) and the foundation ditch ground bottom in structure and be provided with abscission layer (5).
4, foundation pit supporting construction according to claim 3 is characterized in that: the minimum perpendicular distance that structure underpins between the subway tunnel top of the bottom of plate (3) and its respective range is at least 5 meters.
5, according to claim 3 or 4 described foundation pit supporting constructions, it is characterized in that: the minimum vertical clear distance at the bottom of described soldier pile (1) and the subway tunnel top of its respective range is at least 5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102190202A CN101408024B (en) | 2008-11-11 | 2008-11-11 | Undercrossing subway tunnel pit supporting and protecting structure of high-rise building or super high-rise building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102190202A CN101408024B (en) | 2008-11-11 | 2008-11-11 | Undercrossing subway tunnel pit supporting and protecting structure of high-rise building or super high-rise building |
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| Publication Number | Publication Date |
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| CN101408024A true CN101408024A (en) | 2009-04-15 |
| CN101408024B CN101408024B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102190202A Active CN101408024B (en) | 2008-11-11 | 2008-11-11 | Undercrossing subway tunnel pit supporting and protecting structure of high-rise building or super high-rise building |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562077A (en) * | 2011-12-23 | 2012-07-11 | 中铁二局股份有限公司 | Excavation construction method of frame tunnel penetrating special structure at lower portion |
| CN103374916A (en) * | 2013-08-05 | 2013-10-30 | 东通岩土科技（杭州）有限公司 | Pre-pressure steel arch foundation pit supporting structure |
| CN112282770A (en) * | 2020-11-01 | 2021-01-29 | 湖南省水利水电勘测设计研究总院 | Construction method for pile-breaking type underpass existing supporting row pile |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288308C (en) * | 2004-01-17 | 2006-12-06 | 上海市城市建设设计研究院 | Method for constructing deep-large foundation pit over operating tunnel an ddeformation-preventing strucutre |
| CN200985518Y (en) * | 2006-12-20 | 2007-12-05 | 上海市第一建筑有限公司 | Portal type anti floating structure |
| CN101215838A (en) * | 2007-12-28 | 2008-07-09 | 浙江环宇建设集团有限公司 | Construction technique for foundation ditch on top of underground railway tunnel in soft soil area |
-
2008
- 2008-11-11 CN CN2008102190202A patent/CN101408024B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562077A (en) * | 2011-12-23 | 2012-07-11 | 中铁二局股份有限公司 | Excavation construction method of frame tunnel penetrating special structure at lower portion |
| CN102562077B (en) * | 2011-12-23 | 2014-10-08 | 中铁二局股份有限公司 | Excavation construction method of frame tunnel penetrating special structure at lower portion |
| CN103374916A (en) * | 2013-08-05 | 2013-10-30 | 东通岩土科技（杭州）有限公司 | Pre-pressure steel arch foundation pit supporting structure |
| CN103374916B (en) * | 2013-08-05 | 2015-08-12 | 东通岩土科技（杭州）有限公司 | Pre-pressure steel arch foundation pit supporting construction |
| CN112282770A (en) * | 2020-11-01 | 2021-01-29 | 湖南省水利水电勘测设计研究总院 | Construction method for pile-breaking type underpass existing supporting row pile |
| CN112282770B (en) * | 2020-11-01 | 2022-08-12 | 湖南省水利水电勘测设计规划研究总院有限公司 | Construction method for pile-breaking type underpass existing supporting row pile |
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| Publication number | Publication date |
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| CN101408024B (en) | 2012-05-30 |
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Address after: 510620 No. 3-5 East Sports street, sports east road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Design Institute Group Co.,Ltd. Address before: 510620 No. 3-5 East Sports street, sports east road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU DESIGN INSTITUTE |
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