CN102235017B - Lateral force resisting method for soft soil foundation building - Google Patents
Lateral force resisting method for soft soil foundation building Download PDFInfo
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- CN102235017B CN102235017B CN 201010166009 CN201010166009A CN102235017B CN 102235017 B CN102235017 B CN 102235017B CN 201010166009 CN201010166009 CN 201010166009 CN 201010166009 A CN201010166009 A CN 201010166009A CN 102235017 B CN102235017 B CN 102235017B
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Abstract
The invention discloses a lateral force resisting method for a soft soil foundation building. A building and a foundation thereof are constructed on a straight pile, and the vertical gravity loads of the building and the foundation thereof are borne by the straight pile; after the building is completely constructed and settled stably, oblique piles are symmetrically and obliquely driven from the outer side of the building to the lower part of the foundation below the building, wherein the tops of the oblique piles are arranged on one side of the outline of the building, and the bottoms of the oblique piles are arranged on the other side of the outline of the building; and the tops of the oblique piles are connected with the foundation. According to the lateral force resisting method for the soft soil foundation building, the lateral action and load bearing capability of the building can be effectively improved by arranging the oblique piles; and in addition, the method can be used for a new building, and can also be used for reinforcing an old building.
Description
Technical field
The present invention relates to geotechnical engineering, construction work, relate in particular to the method for opposing building lateral force in the soft soil foundation building pile foundation engineering.
Background technology
The soft layer that soft foundation operated by rotary motion intensity is low, compressibilty is high at the soft foundation building construction, if soft foundation is not added processing, tends to occur foundation instability or excessive depression, causes building destroyed or can not normally use.
existing to as disclosed in Chinese patent application CN200710068309.4 in the technology of Soft Ground " method of a kind of cement purdah into prefabricated reinforced concrete lateral force resistance stake ", it adopts first uses cement mixer along the implantation depth of pile body at the construction field (site), depending on soil property and soil compaction situation, omnidistance stirring soil or top water-stop curtain partly stir soil and form curtain, then implant pile body with pile press, make and form the native sealing enclosure wall of gear, wherein pile body adopts Prefabricated reinforced concrete T shape/I-shaped stake, owing to adopting strong stirring soil or rig to draw hole slip casting, be applicable in principle the engineering of going along with sb. to guard him of all kinds of soil properties.
just like China Patent No. CN99237125.2, " soil bolt is disclosed also, taper pile, do not excavate the hammering device of pipe laying ", this patented technology is to use soil bolt in industry and the geotechnical engineering of civilian construction in civil works, taper pile, do not excavate the hammering device of pipe laying, this device is by support, pylon, hoist engine, jump bit, guide rail forms, it is characterized in that: guide rail is fixed on the upper axle of large pulley, guide rail can rotate by arbitrary angle between 0～90 °, be welded with the wheel of 4 bearings below jump bit, jump bit is placed on guide rail, pulled by hoist engine and loosen, can be at guide rail easy on and off rolling impact steel pipe, the steel pipe that thickness is not waited, squeeze in soil by different angles, the equipment of this device is light and handy, can just change construction, can enter narrow place, on the mountain, subaqueous construction, pollution-free, friction, but noiseless construction.
In addition, China Patent No. CN97235911.7 discloses " a kind of permeable breakwater pile foundation ", it comprises the crossbeam of element of construction and syndeton unit, before at least two row's element of construction are, after be interspersed, the taper pile group that element of construction is comprised of at least three following Zhang Shangtuan, single pile that tilt towards different directions, an end build-in seabed and be positioned at single pile top the affixed all-in-one-piece pile cover in said taper pile group upper end is formed.Compared with prior art, the utlity model has in the situation that the long consumption of every linear meter(lin.m.) dike pile foundation basal area is identical, the long horizontal holding capacity of every linear meter(lin.m.) dike but improves four times with first-class advantage.
Chinese patent application CN92102906.3 relates to the processing method of building field dangerous building, depression or differential settlement occurring on the basis causes ground and edge of foundation to produce shear failure, during the normal use of impact, the taper pile in addition at each position, basis, if differential settlement, first after the many side open channels of foundation uplift make building be corrected to the normal position, the perfusion material of body of a pile, and add taper pile in a side of protuberance few (or sinking), the side that protuberance is many adds taper pile less, its groove position, the taper pile inclination angle, length, what, try to achieve according to the theory of plasticity, settling amount and the differential settlement at each position, basis are controlled in certain tolerance band, dangerous building can normally be used again.
Although in above-mentioned patented technology, in addition taper pile is processed the processing method of dangerous building at each position, basis, the buildings such as bridge and harbour also often take to arrange the method lateral force resisting of taper pile in addition, these methods that taper pile is set are because following reason can not be widely used in industry and civilian construction:
(1) because building is subjected to the downward sedimentation of normal gravity load effect, the taper pile top also produces flexural deformation except being under pressure and shearing, and is easy to destroy because of stressed complexity and strength deficiency.
(2) taper pile is set and generally includes to building outside raked pile, taper pile may exceed planar range and the depth bounds of building license.
(3) arrange to the inboard raked pile of building, building is under normal gravity load effect, thereby the basis between the lean-in taper pile taper pile in both sides can produce larger tensile stress cracking destruction.
Summary of the invention
Purpose of the present invention provides a kind of method of soft soil foundation building lateral force resisting, by taper pile is set, can effectively improve the ability that building bears lateral action and load; This method can be used for New Buildings, also can be used for reinforcing the built construction thing.
For achieving the above object, technical scheme of the present invention is:
The method of soft soil foundation building lateral force resisting, building and basis thereof are completed in construction in straight stake, the vertical gravity load on building and basis thereof is subjected to by straight pile, until building construction complete and settlement stability after, below, basis symmetrical inclined under the building of building lateral is to squeezing into taper pile again, the taper pile top is arranged on building outline one side, and its bottom is arranged on building outline opposite side, and the taper pile top is connected with basic.
Further, the method for soft soil foundation building lateral force resisting of the present invention, it comprises the steps:
1) first construct at the new building object location and straight stake and symmetrical inclined are set to squeezing into taper pile; The taper pile top is arranged on building outline one side, and its bottom is arranged on building outline opposite side;
2) construction building thing basis in straight stake, taper pile and building foundation disconnect, and reserve settling height;
3) construction building thing on the building foundation;
4) architecture construction complete and settlement stability after, then the top of taper pile is connected with the building foundation.
Again, the method for soft soil foundation building lateral force resisting of the present invention is characterized in that, comprises the steps:
Be provided with under the built construction thing building foundation and under straight stake;
2. complete architecture construction on the building foundation, and after settlement stability, then symmetrical inclined is to squeezing into taper pile under the building foundation, the taper pile top is arranged on building outline one side, and its bottom is arranged on building outline opposite side.
In addition, the form of described building foundation is bar shaped or raft plate shape, or box-shaped.
Described taper pile adopts unit cross-sectional area tensile strength greater than the stake of 5MPa.
Lean-in taper pile is set up on the soft soil foundation building basis, with lateral force resisting.Pressure can either be born in the taper pile top, also can bearing tension.Under the vertical uniform load q of building, the basic tensile stress between the lean-in taper pile in building both sides can be controlled in the intensity allowed band; Taper pile mainly is subject to the axial force that causes because of lateral load, and building sedimentation under vertical gravity load effect causes that shearing and the Bending Internal Force at taper pile top can be controlled in the intensity allowed band.
Beneficial effect of the present invention
1. the present invention by taper pile is set, can effectively improve the ability that building bears lateral action and load, comprises side direction geological process, lateral earth pressure, wind load, explosive load, effect of impact etc.
2. taper pile can be arranged symmetrically with, thereby avoids making building to bear the partial eccentricity load.
3. the present invention can be used for New Buildings, also can be used for reinforcing the built construction thing.
4. the vertical gravity load on building and basis is subjected to by straight pile, again the top of lean-in taper pile is connected with the basis after settlement stability, taper pile mainly is subject to the axial force that causes because of lateral load, and the taper pile top that causes because of building settlement is sheared and Bending Internal Force can be controlled in the intensity allowed band.
5. because of vertical gravity load effect, the basic tensile stress between the lean-in taper pile in building both sides can be controlled in the intensity allowed band, thereby can not ftracture.
Description of drawings
Fig. 1 is the schematic diagram that the present invention sets up the building of taper pile;
Fig. 2 a～Fig. 2 c is that one embodiment of the invention is the schematic diagram that New Buildings is set up taper pile;
Fig. 3 a～Fig. 3 c is that another embodiment of the present invention is the schematic diagram that the built construction thing is set up taper pile.
The specific embodiment
The present invention will be further described below in conjunction with embodiment.
Referring to Fig. 1, the method of soft soil foundation building lateral force resisting of the present invention, building 2 and basis 3 thereof are completed in construction in straight stake 1, the vertical gravity load on building 1 and basis 3 thereof is born by straight stake 1, until building construction complete and settlement stability after, basis 3 below symmetrical inclineds under the building 2 lateral buildings 2 are to squeezing into taper pile 4,5 again, taper pile 4,5 tops are arranged on building 2 outline one sides, its bottom is arranged on building 2 outline opposite sides, and the taper pile top is connected with basic 3.
Treat that the building construction is completed and settlement stability is set up lean-in taper pile afterwards again under building, taper pile is arranged in the planar range and depth bounds of building license, the unfavorable internal force of building foundation and taper pile top generation can be controlled in allowed band under the vertical gravity load effect of building, and the lateral force of building is resisted by taper pile.
Referring to Fig. 2 a～Fig. 2 c, the inventive method is used for New Buildings and sets up taper pile.
1) first construct in New Buildings 2 positions of wide approximately 10m straight stake 1 and the taper pile 4,5 of dark approximately 30m;
2) taper pile 4,5 tops are arranged on building 2 outline one sides, and its bottom is arranged on building 2 outline opposite sides, and taper pile 4,5 can be arranged in the building planar range of license like this; Taper pile 4,5 adopts the steel tube component of penetration concretes, and pressure can either be born in its top, also can bearing tension, and its unit cross-sectional area tensile strength is greater than 5Mpa;
3) construction building thing basis 3 in straight stake 1, the form of building foundation 3 can be bar shaped, raft plate shape or box-shaped; Taper pile 4,5 and building foundation 3 disconnect, and reserve settling height;
4) construction building thing 2 on building foundation 3;
5) building 2 construction complete and settlement stability after, then taper pile 4,5 top are connected with basic 3.
Referring to Fig. 3 a～Fig. 3 c, the inventive method is used for the built construction thing and sets up taper pile.
1) be arranged with the straight stake 1 of building foundation 3 and dark approximately 30m at the built construction thing 2 of wide approximately 10m, the form on basis 3 can be bar shaped, raft plate shape or box-shaped;
2) building 2 construction complete and settlement stability after sink to again the taper pile 4,5 of dark approximately 30m under building foundation 3;
3) taper pile 4,5 tops are arranged on building 2 outline one sides, and its bottom is arranged on building 2 outline opposite sides, and taper pile 4,5 can be arranged in the building planar range of license like this; Taper pile 4,5 adopts the steel tube component of penetration concretes, and pressure can either be born in its top, also can bearing tension;
4) taper pile 4,5 top are connected with building foundation 3.;
The present invention can be applied to effectively improve the ability that building bears lateral action and load in the construction work and pile foundation engineering of soft clay area.
Claims (7)
1. the method for soft soil foundation building lateral force resisting, building and basis thereof are completed in construction in straight stake, the vertical gravity load on building and basis thereof is subjected to by straight pile, until building construction complete and settlement stability after, below, basis symmetrical inclined under the building of building lateral is to squeezing into taper pile again, the taper pile top is arranged on building outline one side, and its bottom is arranged on building outline opposite side, and the taper pile top is connected with basic.
2. the method for soft soil foundation building lateral force resisting, is characterized in that, comprises the steps:
1) first construct at the new building object location and straight stake and symmetrical inclined are set to squeezing into taper pile; The taper pile top is arranged on building outline one side, and its bottom is arranged on building outline opposite side;
2) construction building thing basis in straight stake, taper pile and building foundation disconnect, and reserve settling height;
3) construction building thing on the building foundation;
4) architecture construction complete and settlement stability after, then the top of taper pile is connected with the building foundation.
3. the method for soft soil foundation building lateral force resisting as claimed in claim 2, is characterized in that,
Described taper pile adopts unit cross-sectional area tensile strength greater than the stake of 5MPa.
4. the method for soft soil foundation building lateral force resisting as claimed in claim 2, is characterized in that,
The form of described building foundation is bar shaped or raft plate shape or box-shaped.
5. the method for soft soil foundation building lateral force resisting, is characterized in that, comprises the steps:
1) be provided with under the built construction thing building foundation and under straight stake;
2) after settlement stability, then under the built construction beyond the region of objective existence side direction building foundation symmetrical inclined to squeezing into
Taper pile, taper pile top are arranged on building outline one side, and its bottom arranges outside the building
The profile opposite side, and the taper pile top is connected with the building foundation.
6. the method for soft soil foundation building lateral force resisting as claimed in claim 5, is characterized in that,
Described taper pile adopts unit cross-sectional area tensile strength greater than the stake of 5MPa.
7. the method for soft soil foundation building lateral force resisting as claimed in claim 5, is characterized in that,
The form of described building foundation is bar shaped or raft plate shape, or box-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010166009 CN102235017B (en) | 2010-04-29 | 2010-04-29 | Lateral force resisting method for soft soil foundation building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010166009 CN102235017B (en) | 2010-04-29 | 2010-04-29 | Lateral force resisting method for soft soil foundation building |
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| CN102235017A CN102235017A (en) | 2011-11-09 |
| CN102235017B true CN102235017B (en) | 2013-06-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110318366A (en) * | 2018-03-30 | 2019-10-11 | 天津大学 | The Gravity Type Casisson Berth structure and its method of construction of friction pile are set in foundation |
| CN112709212B (en) * | 2021-02-09 | 2022-05-17 | 胡小彦 | Weak geological building foundation reinforcement construction method |
| CN114776229B (en) * | 2022-04-25 | 2024-01-23 | 中铁大桥勘测设计院集团有限公司 | Water area CPTU test system and test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB263997A (en) * | 1925-12-02 | 1927-01-13 | Jorgen Saxild | Improvements in and relating to the construction of quay walls, piers and other marine structures |
| CA2452136A1 (en) * | 2002-07-08 | 2005-06-05 | Richard M. Berry | Pile array assembly system for reduced soil liquefaction |
| CN201144425Y (en) * | 2007-12-27 | 2008-11-05 | 国网北京电力建设研究院 | Mini pile tower foundation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044198A (en) * | 2002-07-11 | 2004-02-12 | Mitsubishi Heavy Ind Ltd | Jacket type foundation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB263997A (en) * | 1925-12-02 | 1927-01-13 | Jorgen Saxild | Improvements in and relating to the construction of quay walls, piers and other marine structures |
| CA2452136A1 (en) * | 2002-07-08 | 2005-06-05 | Richard M. Berry | Pile array assembly system for reduced soil liquefaction |
| CN201144425Y (en) * | 2007-12-27 | 2008-11-05 | 国网北京电力建设研究院 | Mini pile tower foundation |
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