CN1020204C - Enclosing treatment of soft-earth fundation for buildings and structures - Google Patents
Enclosing treatment of soft-earth fundation for buildings and structures Download PDFInfo
- Publication number
- CN1020204C CN1020204C CN 88101349 CN88101349A CN1020204C CN 1020204 C CN1020204 C CN 1020204C CN 88101349 CN88101349 CN 88101349 CN 88101349 A CN88101349 A CN 88101349A CN 1020204 C CN1020204 C CN 1020204C
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- earth
- hoop
- pedosphere
- enclosing
- foundations
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Abstract
The present invention relates to a method for consolidating building foundations. An annular earth enclosing ring is arranged around foundations, and an earth enclosing inner ring can also be arranged at the foundations in the earth enclosing ring. The height of the earth enclosing ring can be determined according to geological conditions and foundation load, and the earth enclosing ring can be made of reinforced concrete or steel plates on site and can also be formed by that prefabricated piles are hammered into the earth. The present invention can be used for treating the foundations of high buildings and structures with larger load and is suitable for shallow foundation design and deep foundation design. The foundations treated by an earth enclosing method can reduce the foundation sinking quantity and uneven sinking quantity.
Description
The present invention relates to a kind of reinforcement means of building structure ground.
Sink and uneven subsidence for reducing the building structure base, the way one that adopts both at home and abroad is a consolidated subsoil at present, the 2nd, select suitable basis.Consolidated subsoil often adopts methods such as compacting, precompressed, the stake of notes sandstone, chemical treatment.The method of introducing consolidated subsoil among the clear 62-233321 of TOHKEMY is that the soft sheet material of utilization is made circular cylinder, and lower limb tumbles in the frame that stiff materials is made thereon, and whole tube is vertically sunk to underground under exerting pressure; One or more such tubes can be set on the plot base; Things such as the interior all right fluid concrete of tube, thus moving of soil layer controlled, consolidated subsoil.But the problem that this method exists is, the diameter of tube can not be done very greatly, otherwise can't be pressed into undergroundly, and the manufacturing of tube is also cumbersome.
The objective of the invention is to design a kind of new foundation reinforcement method, can make consolidated subsoil eliminate soil body lateral displacement, improve supporting capacity, reduce between the adjacent building because inequality ground distortion and making a difference each other.
The objective of the invention is to realize by around ground, the circumferential band pedosphere being set.The hoop pedosphere also can be provided with the native inner ring of hoop with interior ground, also can adopt other reinforcement means to reinforce.The hoop pedosphere can steel concrete or steel plate making.The height of hoop pedosphere can design according to geological conditions and foundation load.Hoop pedosphere height hour can excavate an annular ditch, field fabrication hoop pedosphere in ditch in advance around ground.When hoop pedosphere when being used for deep foundation design, can be made into and give the system stake and be driven underground and enclose system hoop pedosphere.
Below in conjunction with accompanying drawing the present invention is further described.
Accompanying drawing 1 is hoop pedosphere lateral view (section).
1, the tank body on the ground, 2, the hoop pedosphere.
Accompanying drawing 2 is hoop pedosphere vertical view.
2, the hoop pedosphere that surrounds of flute profile stake.
Prefabricated pile can be made into " groove " shape and "T"-shaped two kinds. Can adopt " groove " shape when big load basis, lateral pressure are big, the stake of " groove " shape is squeezed into around ground, adjacent spill of stake inwards, a spill is outside, staggered noose surrounds annular (consulting Fig. 2). Load is littler, and soil body lateral pressure hour can adopt "T"-shaped stake to enclose system hoop pedosphere. Pile length (namely binding round the height of pedosphere) is determined by design. " groove " shape or "T"-shaped horizontal edge length can be 300-400NN.
Operation principle of the present invention is summarized as follows.
When the load of soft soil foundation constantly increased, the distortion of ground can present three phases: densification stage, partial cut stage, north stream stage. Foundation deformation in the densification stage mainly is that reduce in the grogs space, and grogs produces vertical deflection. The foundation deformation in partial cut stage is existing vertically again side direction. The ground grogs in north stream stage mainly is lateral displacement, and ground gradually destroys in time. Adopt hoop local method Ground Treatment to be controlled at the phase I to the foundation stress state fully, under foundation load constantly increased, the shear stress that surpasses the shearing strength of soil can be born by the hoop pedosphere, and grogs is not producing lateral displacement, thereby ground can not destroy. The soil body of hoop pedosphere outside becomes the stable soil body, has changed the original stress of the soil body. The constraint that the soil body of hoop in the pedosphere is subjected to binding round pedosphere no longer produces lateral displacement, the bearing capacity of ground Greatly improve. Because the hoop pedosphere of ground is cut apart outer two zones of lopping inner ring with the soil body, the Soil mass state in a zone no longer affects another regional Soil mass state, therefore bind round the ground of local method processing and can eliminate the impact that causes owing to the ground different distortion between the adjacent buildings, reduced the differential settlement of ground.
The hoop local method can be used as that foundation reinforcement method independently is used for highrise building and the bigger structure ground of load is handled, also can with other reinforcement means in conjunction with Ground Treatment, all can obtain comparatively ideal effect.The hoop local method is all applicable to the shallow foundation deep foundation design, also can eliminate simultaneously in the foundation construction influence to surrounding buildings thing structure.
Embodiment:
No. 2 petroleum tank grounds of Oil Refinery, Tianjin Petro-Chemical Corp. are handled through the hoop local method, produce and use 4 years, 19 tons/square metre of maximum loads; No. 1 the petroleum tank ground is handled without the hoop local method, and operating period and load situation and No. 2 petroleum tanks are basic identical; Fixed two the oil tank bottom plate sedimentation situations of side as can be known, No. 2 jar foundation settlement are less than No. 1 jar:
1# jar 0 275 432 401 274(mm)
2# jar 0 176 252 232 104(mm)
(R is the oil tank radius)
Claims (2)
1, a kind of soft foundation hoop soil facture, its step is provided with a circumferential band pedosphere around being included in ground, and ground is provided with the native inner ring of hoop again in the hoop pedosphere, and above-mentioned hoop pedosphere is made by steel concrete or steel plate.
2, according to the described facture of claim 1, it is characterized in that binding round pedosphere and be driven underground by preformed pile and surround, the preformed pile cross section is " groove " shape or "T"-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101349 CN1020204C (en) | 1988-03-18 | 1988-03-18 | Enclosing treatment of soft-earth fundation for buildings and structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101349 CN1020204C (en) | 1988-03-18 | 1988-03-18 | Enclosing treatment of soft-earth fundation for buildings and structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1035860A CN1035860A (en) | 1989-09-27 |
| CN1020204C true CN1020204C (en) | 1993-03-31 |
Family
ID=4831720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88101349 Expired - Fee Related CN1020204C (en) | 1988-03-18 | 1988-03-18 | Enclosing treatment of soft-earth fundation for buildings and structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020204C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100560876C (en) * | 2007-01-22 | 2009-11-18 | 宝山钢铁股份有限公司 | The stiffening device of round-arch casing foundation |
| CN102021871B (en) * | 2009-09-15 | 2012-05-23 | 中国石油化工集团公司 | Foundation treatment method for temporary construction subgrade on dredge fill soft foundation site |
| CN107989017A (en) * | 2017-12-15 | 2018-05-04 | 中科纳达新材料（广西）有限公司 | A kind of fixing device for building lot bottom |
| CN112627249B (en) * | 2020-12-07 | 2022-02-25 | 马鞍山钢铁建设集团有限公司 | Construction method for shallow foundation reinforcement |
| CN112813954A (en) * | 2020-12-31 | 2021-05-18 | 常州工学院 | Structure for controlling differential settlement and construction method |
-
1988
- 1988-03-18 CN CN 88101349 patent/CN1020204C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035860A (en) | 1989-09-27 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |