CN101806040A - Underpinning device and method for bridge and building - Google Patents
Underpinning device and method for bridge and building Download PDFInfo
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- CN101806040A CN101806040A CN 201010132085 CN201010132085A CN101806040A CN 101806040 A CN101806040 A CN 101806040A CN 201010132085 CN201010132085 CN 201010132085 CN 201010132085 A CN201010132085 A CN 201010132085A CN 101806040 A CN101806040 A CN 101806040A
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Abstract
The invention provides an underpinning device and an underpinning method for a bridge and a building. The underpinning device comprises a plurality of columnar pile foundations arranged along a bridge pier of the bridge or around a building foundation, wherein flexible ropes are stretched among the tops of the pile foundations; different flexible ropes are arranged in a netlike form; and the two ends of the flexible ropes are anchored on the pile foundations or ground anchors. The method comprises the following steps: (1) piling around the bridge or the building and inserting steel pipes, wherein the top ends of the steel pipes are higher than an original foundation; (2) inserting reinforcing steel bars and pouring concrete into the steel pipes and solidifying the concrete to form the pile foundations; (3) arranging the flexible ropes on the tops of the pile foundations in the netlike form, tensioning the flexible ropes by using a tensioner, supporting the bridge or the building and anchoring the two ends of the flexible ropes; (4) treating the original foundation, detaching the original foundation, adding necessary facilities and building a new foundation; and (5) placing the bridge or the building on the new foundation. A composite rope supporting structure is used, so the bridge or the building can be underpinned, construction is performed easily and the engineering quality is easy to ensure.
Description
Technical field
The present invention relates to the underpinning device and the method for a kind of bridge and highrise building.
Background technology
Height after bridge construction is finished is all determined, but development along with shipbuilding technology and shipping business, large-tonnage ships is more and more, the bridge that makes some early stage designs, construction, absolute altitude does not reach the navigation requirement that boats and ships pass through, and makes some large-tonnage cargo ships by difficulty, and steamer that like this can only the little tonnage of packing could pass through, both wasted time and energy like this, increased cost again.And cost height, the cycle of removing redesign, construction are long.
In addition, along with the quickening of present urban development paces, the construction of communal facility such as underground transportation facilities such as subway or pipeline need be passed under some existing surface structureses.And the demand of open facility such as underground garage also sharply increases, yet former building is not because social at that time needs of problems has underground garage.Particularly build this class communal facility again under the high-rise building at existing building, all need foundation by existing building to underpin the basis that keeps existing building and be not subjected to disturbance, guarantee the safety of newly-built underground construction and reliable and stable between the operating period simultaneously.But what adopted in the past is beam type or board-like support and change method, all be the piling earlier of present building both sides, below foundation bed, excavate from the side then, below the basis, do plate or beam, and upper load is underpined the both sides pile foundation by plate or beam, the most of operations of this support and change method is all carried out at underground, and the excavation workload is big, long in time limit, working space is limited, and dangerous, the workmanship of construct is not easy assurance.
Summary of the invention
At the deficiency that prior art exists, the object of the present invention is to provide the underpinning device and the method for a kind of bridge and highrise building.
Technical scheme of the present invention is achieved in that the underpinning device of a kind of bridge and building, comprise many column pile foundations along bridge pier or structure foundation arranged around, stretch-draw has flexible cable between the pile foundation top, different flexible cable cloth reticulate, and the flexible cable two ends are anchored on pile foundation or the earth anchor.
Described pile foundation is the steel concrete of steel pipe and steel duct perfusion.
Described pile foundation bottom concrete to around expand the formation major part, with increase the pile foundation resistance to compression and resist, inclination, resistance to plucking can, improve its stability.
Described pile foundation top is provided with cable saddle, convenient flexible cable is positioned at the pile foundation top and with tensioner tensioning flexible cable.
Described steel pipe is rectangle or circular layout.
The support and change method of a kind of bridge and building may further comprise the steps:
(1) piling and insertion steel pipe around bridge or building, the steel pipe top is higher than former basis;
(2) in steel pipe, insert reinforcing bar and placing of concrete, make it solidify to form pile foundation;
(3) flexible cable is installed at the pile foundation top, and flexible cable cloth reticulates, hold the anchoring of flexible cable two ends with tensioner with the flexible cable tensioning and with bridge or building;
(4) handle former basis, former basis is removed, increase necessary facilities, and build new basis;
(5) bridge or building are placed on the new basis.
Also insert conduit earlier to the steel pipe bottom before in steel pipe, inserting reinforcing bar and placing of concrete, pour into explosive and ignition by conduit to the steel pipe bottom, form the cavity of a compacting in the steel pipe bottom, not only can with around the ground compacting, and when placing of concrete can pile foundation bottom form to around the major part that expands.
The ratio of cement, sand and stone is 1: 3: 7 in the middle concrete of described step (2).
In addition, whole construction course need be carried out under the construction monitoring of strictness, guarantees the safety of original structure.
Beneficial effect of the present invention: by utilizing compound rope base structure, make bridge or building can realize underpining, employing flexible cable holder structure is compared construction and is underpined process operation conveniently with board-like or beam type, and construction volume is little, the carrying out of convenient construction, workmanship also guarantees easily in addition.
Description of drawings
Fig. 1 is the plan view of underpinning device of the present invention;
Fig. 2 is the empty structural representation that forms behind the explosive initiation among the present invention;
Fig. 3 is the elevation of underpinning device;
Among the figure: 1 pile foundation, 2 flexible cables, 3 buildings, 4 cavities.
The specific embodiment
The present invention is described further in conjunction with the accompanying drawings, to help understanding content of the present invention.
Embodiment
Be illustrated in figure 1 as the structural representation of a kind of embodiment of underpinning device of the present invention, have four pairs of pile foundations 1 among the figure, pile foundation 1 forms composite pile foundation by the steel concrete of steel pipe and steel duct perfusion, pile foundation 1 forms circular layout, stretch-draw flexible cable 2 between the composite pile foundation 1 that alternate every pair of steel pipe and concrete constitute, flexible cable 2 has constituted a vang net, and every pile base top is equipped with cable saddle, conveniently flexible cable 2 two ends is positioned at the pile foundation top.Pile foundation adopt concrete to around expand the formation major part structure.
Its underpinning construction method is: as shown in Figure 1, at steel pipe with bridge or building 3 piling on every side and insertion some, the steel pipe top is higher than former basis, in steel pipe, insert glass tube, pour into explosive and ignition by glass tube to the steel pipe bottom, at this moment form a cavity 4 (as shown in Figure 2) in the steel pipe bottom, and detonation compacting on every side.In steel pipe 1, insert reinforcing bar and placing of concrete then, make concrete be full of hole and steel pipe, wherein, the ratio of cement, sand and stone is 1: 3: 7 in the concrete, treat that concrete and reinforcing bar solidify the back and form composite pile foundation 1, the bottom area of new pile foundation is big, and the pressure of pile foundation bottom reduces when loading like this, guaranteed the firm of new basis simultaneously, be not easy to become flexible; Employing is netted by cable saddle stretch-draw flexible cable 2 formations at pile foundation 1 top as shown in figures 1 and 3 then, utilizes puller system tension flexible cable 2 that bridge or building 3 are held up, and anchoring flexible cable two ends are on earth anchor or pile foundation; Handle the former basis of bridge or building, with its dismounting, increase the needed facility of engineering simultaneously, such as the indispensable facility of building underground garage or subway passage, after waiting these work to finish bridge or building 3 be put on the new basis and reinforce, at last rope base structure is removed, the enforcement of these processes needs construction monitoring, construct through calculating accurately according to the engineering science principle.
Claims (7)
1. the underpinning device of bridge and building, it is characterized in that: comprise many column pile foundations along bridge pier or structure foundation arranged around, stretch-draw has flexible cable between the pile foundation top, and different flexible cable cloth reticulate, and the flexible cable two ends are anchored on pile foundation or the earth anchor.
2. underpinning device as claimed in claim 1 is characterized in that: described pile foundation is the steel concrete of steel pipe and steel duct perfusion.
3. underpinning device as claimed in claim 2 is characterized in that: described pile foundation bottom concrete to around expand the formation major part.
4. as described underpinning device one of in the claim 1 to 3, it is characterized in that: described pile foundation top is provided with cable saddle.
5. the support and change method of bridge and building is characterized in that may further comprise the steps:
(1) piling and insertion steel pipe around bridge or building, the steel pipe top is higher than former basis;
(2) in steel pipe, insert reinforcing bar and placing of concrete, make it solidify to form pile foundation;
(3) flexible cable is installed at the pile foundation top, and flexible cable cloth reticulates, hold the anchoring of flexible cable two ends with tensioner with the flexible cable tensioning and with bridge or building;
(4) handle former basis, former basis is removed, increase necessary facilities, and build new basis;
(5) bridge or building are placed on the new basis.
6. the support and change method of bridge according to claim 5 and building also inserts conduit earlier to the steel pipe bottom before it is characterized in that inserting reinforcing bar and water cement in steel pipe, pours into explosive in the conduit and also ignites, and forms the cavity of a compacting in the steel pipe bottom.
7. according to the support and change method of claim 5 or 6 described bridges and building, it is characterized in that the weight ratio of cement, sand and stone in the middle concrete of described step (2) is 1: 3: 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101320850A CN101806040B (en) | 2010-03-25 | 2010-03-25 | Underpinning device and method for bridge and building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101320850A CN101806040B (en) | 2010-03-25 | 2010-03-25 | Underpinning device and method for bridge and building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101806040A true CN101806040A (en) | 2010-08-18 |
| CN101806040B CN101806040B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101320850A Expired - Fee Related CN101806040B (en) | 2010-03-25 | 2010-03-25 | Underpinning device and method for bridge and building |
Country Status (1)
| Country | Link |
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| CN (1) | CN101806040B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518051A (en) * | 2011-12-31 | 2012-06-27 | 江苏省交通规划设计院股份有限公司 | System for deviation rectifying and reinforcing pier |
| CN102561721A (en) * | 2012-02-29 | 2012-07-11 | 化学工业岩土工程有限公司 | Building jacking deviation rectifying method |
| CN102644294A (en) * | 2012-04-10 | 2012-08-22 | 广东天竟建设有限公司 | Foundation underpinning method around foundation pit |
| CN109653534A (en) * | 2019-02-18 | 2019-04-19 | 河北建筑设计研究院有限责任公司 | Set building club-footed pile strip footing straining beam and set building |
| CN109763509A (en) * | 2019-02-28 | 2019-05-17 | 广东广强基础工程有限公司 | A kind of buildings pile underpinning structure and its support and change method |
Citations (7)
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| CN1257149A (en) * | 1998-12-11 | 2000-06-21 | 北京市第七城市建设工程公司 | Integral foundation underpinning technology for building added floor |
| CN1603542A (en) * | 2004-11-11 | 2005-04-06 | 徐国彬 | Composite cable holding roof structure |
| JP2005264569A (en) * | 2004-03-18 | 2005-09-29 | Takenaka Komuten Co Ltd | Construction method for extending lower story of existing building |
| CN101012650A (en) * | 2007-02-08 | 2007-08-08 | 徐国彬 | Pressing-resistant plucking-resistant pile and forming method thereof |
| WO2007138427A2 (en) * | 2006-05-26 | 2007-12-06 | So.L.E.S. - Societa' Lavori Edili E Serbatoi S.P.A. | Method of raising a building |
| CN101117801A (en) * | 2007-09-05 | 2008-02-06 | 哈尔滨工业大学 | Superposition pile for engineering reconstruction and pile forming method |
| CN101294447A (en) * | 2007-04-23 | 2008-10-29 | 上海市城市建设设计研究院 | Buildings pile underpinning method |
-
2010
- 2010-03-25 CN CN2010101320850A patent/CN101806040B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257149A (en) * | 1998-12-11 | 2000-06-21 | 北京市第七城市建设工程公司 | Integral foundation underpinning technology for building added floor |
| JP2005264569A (en) * | 2004-03-18 | 2005-09-29 | Takenaka Komuten Co Ltd | Construction method for extending lower story of existing building |
| CN1603542A (en) * | 2004-11-11 | 2005-04-06 | 徐国彬 | Composite cable holding roof structure |
| WO2007138427A2 (en) * | 2006-05-26 | 2007-12-06 | So.L.E.S. - Societa' Lavori Edili E Serbatoi S.P.A. | Method of raising a building |
| CN101012650A (en) * | 2007-02-08 | 2007-08-08 | 徐国彬 | Pressing-resistant plucking-resistant pile and forming method thereof |
| CN101294447A (en) * | 2007-04-23 | 2008-10-29 | 上海市城市建设设计研究院 | Buildings pile underpinning method |
| CN101117801A (en) * | 2007-09-05 | 2008-02-06 | 哈尔滨工业大学 | Superposition pile for engineering reconstruction and pile forming method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518051A (en) * | 2011-12-31 | 2012-06-27 | 江苏省交通规划设计院股份有限公司 | System for deviation rectifying and reinforcing pier |
| CN102561721A (en) * | 2012-02-29 | 2012-07-11 | 化学工业岩土工程有限公司 | Building jacking deviation rectifying method |
| CN102561721B (en) * | 2012-02-29 | 2015-03-25 | 化学工业岩土工程有限公司 | Building jacking deviation rectifying method |
| CN102644294A (en) * | 2012-04-10 | 2012-08-22 | 广东天竟建设有限公司 | Foundation underpinning method around foundation pit |
| CN109653534A (en) * | 2019-02-18 | 2019-04-19 | 河北建筑设计研究院有限责任公司 | Set building club-footed pile strip footing straining beam and set building |
| CN109763509A (en) * | 2019-02-28 | 2019-05-17 | 广东广强基础工程有限公司 | A kind of buildings pile underpinning structure and its support and change method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101806040B (en) | 2012-05-30 |
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