CN102235017A - 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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- CN102235017A CN102235017A CN 201010166009 CN201010166009A CN102235017A CN 102235017 A CN102235017 A CN 102235017A CN 201010166009 CN201010166009 CN 201010166009 CN 201010166009 A CN201010166009 A CN 201010166009A CN 102235017 A CN102235017 A CN 102235017A
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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 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 take place foundation instability or excessive depression, causes building destroyed or can not normally use.
Existing in the technology of Soft Ground as Chinese patent application CN200710068309.4 disclosed " method of a kind of cement purdah into prefabricated reinforced concrete lateral force resistance stake ", it adopts at the construction field (site) earlier with the implantation depth of cement mixer along pile body, look soil property and soil compaction situation, omnidistance stirring soil or top water-stop curtain partly stir soil and form curtain, implant pile body with pile press then, make and form the native sealing enclosure wall of retaining, wherein pile body adopts the prefabricated T shape of steel bar concrete/I-shaped stake, owing to adopt powerful stirring soil or rig to draw hole slip casting, be applicable to the engineering of going along with sb. to guard him of all kinds of soil properties in principle.
Just like China Patent No. CN99237125.2 " soil bolt; taper pile; do not excavate the hammering device of pipe laying " disclosed also, 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 is formed, it is characterized in that: guide rail is fixed on going up on the axle of large pulley, guide rail can rotate by arbitrary angle between 0～90 °, be welded with the wheel of 4 bearings below the jump bit, jump bit is placed on the guide rail, by hoist engine pulling with loosen, can be at guide rail easy on and off rolling impact steel pipe, the steel pipe that thickness is not waited, squeeze in the 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 formed by at least three following Zhang Shangtuan, towards different directions single pile that tilt, 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 under the identical situation of the long consumption of every linear meter(lin.m.) dike pile foundation basal area, 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, when influence is normally used, the taper pile in addition at each position, basis, if differential settlement, then earlier 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 a side of lacking (or sinking) at protuberance adds taper pile, 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, the settling amount and the differential settlement at each position, basis are controlled in certain tolerance band, dangerous building can normally be used again.
Though in addition taper pile is handled the processing method of dangerous building at each position, basis in the above-mentioned patented technology, buildings such as bridge and harbour also often take to be provided with the method opposing lateral force of taper pile in addition, these methods that taper pile is set are owing to following reason can not be widely used in industry and the civilian construction:
(1) because of building is subjected to the downward sedimentation of normal gravity load effect, the taper pile top also produces flexural deformation except that 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 the planar range and the depth bounds of building permission.
(3) be provided with 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 bigger tensile stress cracking destruction.
Summary of the invention
Purpose of the present invention provides a kind of method of soft foundation building opposing lateral force, by taper pile is set, can effectively improve the ability that building bears side direction effect and load; This method can be used for the new building thing, also can be used to reinforce the built construction thing.
For achieving the above object, technical scheme of the present invention is:
The method of soft foundation building opposing lateral force, building and basis thereof are finished in construction in straight stake, the vertical gravity load on building and basis thereof is subjected to by straight pile, treat that building construction is finished and settlement stability after, the oblique taper pile of squeezing into of below, basis symmetry under the building of building lateral 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 the basis.
Further, the method for soft foundation building opposing lateral force of the present invention, it comprises the steps:
1) in the construction earlier of new building object location straight stake and the oblique taper pile of squeezing into of symmetry are set; 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 finish and settlement stability after, the top with taper pile is connected with the building foundation again.
Again, the method for soft foundation building opposing lateral force 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. on the building foundation, finish architecture construction, and behind the settlement stability, the oblique taper pile of squeezing into of symmetry under the building foundation again, 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 the stake of unit cross-sectional area tensile strength greater than 5MPa.
Lean-in taper pile is set up in the soft foundation building foundation, with the opposing lateral force.Pressure can either be born in the taper pile top, also can bear pulling force.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 subjected to the axial force that causes because of lateral load, and building sedimentation under vertical gravity load effect causes that the shearing at taper pile top and crooked internal force can be controlled in the intensity allowed band.
Beneficial effect of the present invention
1. the present invention can effectively improve the ability that building bears side direction effect and load by taper pile is set, and comprises side direction geological process, lateral earth pressure, wind load, explosive load, effect of impact etc.
2. taper pile can symmetric arrangement, thereby avoids making building to bear the partial eccentricity load.
3. the present invention can be used for the new building thing, also can be used to reinforce 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 behind the settlement stability, taper pile mainly is subjected to the axial force that causes because of lateral load, and the taper pile top that causes because of building settlement is sheared and crooked 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 sets up the schematic diagram of the building of taper pile for the present invention;
Fig. 2 a～Fig. 2 c is that one embodiment of the invention is the schematic diagram that the new building thing 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 foundation building opposing lateral force of the present invention, building 2 and basis 3 thereof are finished in construction in straight stake 1, the vertical gravity load on building 1 and basis 3 thereof is born by straight stake 1, treat that building construction is finished and settlement stability after, the oblique taper pile 4,5 of squeezing into of 3 belows, basis under the building 2 lateral buildings 2 symmetry again, taper pile 4,5 tops are arranged on building 2 outlines one side, its bottom is arranged on building 2 outline opposite sides, and the taper pile top is connected with basis 3.
Treat that the building construction is finished 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 permission, the unfavorable internal force that building foundation and taper pile top produce under the vertical gravity load effect of building can be controlled in the allowed band, 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 the new building thing and sets up taper pile.
1) first straight stake 1 and the taper pile 4,5 of about 30m deeply of constructing in new building thing 2 positions of wide about 10m;
2) taper pile 4,5 tops are arranged on building 2 outlines one side, 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 permission like this; Taper pile 4,5 adopts the steel tube component of penetration concrete, and pressure can either be born in its top, also can bear pulling force, 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 finish and settlement stability after, the top with taper pile 4,5 is connected with basic 3 again.
Referring to Fig. 3 a～Fig. 3 c, the inventive method is used for the built construction thing and sets up taper pile.
1) the built construction thing 2 at wide about 10m is arranged with building foundation 3 and the straight stake 1 of about 30m deeply, and the form on basis 3 can be bar shaped, raft plate shape or box-shaped;
2) building 2 construction finish and settlement stability after under building foundation 3, sink to the taper pile 4,5 of dark about 30m again;
3) taper pile 4,5 tops are arranged on building 2 outlines one side, 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 permission like this; Taper pile 4,5 adopts the steel tube component of penetration concrete, and pressure can either be born in its top, also can bear pulling force;
4) top of taper pile 4,5 is connected with building foundation 3.;
The present invention can be applied to effectively improve the ability that building bears side direction effect and load in the construction work and pile foundation engineering of soft clay area.
Claims (7)
1. the soft foundation building is resisted the method for lateral force, building and basis thereof are finished in construction in straight stake, the vertical gravity load on building and basis thereof is subjected to by straight pile, treat that building construction is finished and settlement stability after, the oblique taper pile of squeezing into of below, basis symmetry under the building of building lateral 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 the basis.
2. the method for soft foundation building opposing lateral force as claimed in claim 1 is characterized in that, comprises the steps:
1) in the construction earlier of new building object location straight stake and the oblique taper pile of squeezing into of symmetry are set; 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 finish and settlement stability after, the top with taper pile is connected with the building foundation again.
3. the method for soft foundation building opposing lateral force as claimed in claim 2 is characterized in that,
Described taper pile adopts the stake of unit cross-sectional area tensile strength greater than 5MPa.
4. the method for soft foundation building opposing lateral force 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 foundation building opposing lateral force as claimed in claim 1 is characterized in that, comprises the steps:
1) be provided with under the built construction thing building foundation and under straight stake;
2) on the building foundation, finish architecture construction, and behind the settlement stability, the oblique taper pile of squeezing into of symmetry under the building foundation again, the taper pile top is arranged on building outline one side, and its bottom is arranged on building outline opposite side.
6. the method for soft foundation building opposing lateral force as claimed in claim 5 is characterized in that,
Described taper pile adopts the stake of unit cross-sectional area tensile strength greater than 5MPa.
7. the method for soft foundation building opposing lateral force 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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| Publication Number | Publication Date |
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| CN102235017A true CN102235017A (en) | 2011-11-09 |
| CN102235017B CN102235017B (en) | 2013-06-19 |
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| CN 201010166009 Active CN102235017B (en) | 2010-04-29 | 2010-04-29 | Lateral force resisting method for soft soil foundation building |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112709212A (en) * | 2021-02-09 | 2021-04-27 | 胡小彦 | Weak geological building foundation reinforcement construction method |
| CN114776229A (en) * | 2022-04-25 | 2022-07-22 | 中铁大桥勘测设计院集团有限公司 | Water area CPTU test system and test method |
Citations (4)
| 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 |
| JP2004044198A (en) * | 2002-07-11 | 2004-02-12 | Mitsubishi Heavy Ind Ltd | Jacket type foundation |
| 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 |
-
2010
- 2010-04-29 CN CN 201010166009 patent/CN102235017B/en active Active
Patent Citations (4)
| 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 |
| JP2004044198A (en) * | 2002-07-11 | 2004-02-12 | Mitsubishi Heavy Ind Ltd | Jacket type foundation |
| CN201144425Y (en) * | 2007-12-27 | 2008-11-05 | 国网北京电力建设研究院 | Mini pile tower foundation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112709212A (en) * | 2021-02-09 | 2021-04-27 | 胡小彦 | Weak geological building foundation reinforcement construction method |
| CN112709212B (en) * | 2021-02-09 | 2022-05-17 | 胡小彦 | Weak geological building foundation reinforcement construction method |
| CN114776229A (en) * | 2022-04-25 | 2022-07-22 | 中铁大桥勘测设计院集团有限公司 | Water area CPTU test system and test 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 |
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| CN102235017B (en) | 2013-06-19 |
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