CN1035860A - Enclosing treatment of soft-earth fundation for buildings and structures - Google Patents
Enclosing treatment of soft-earth fundation for buildings and structures Download PDFInfo
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- CN1035860A CN1035860A CN 88101349 CN88101349A CN1035860A CN 1035860 A CN1035860 A CN 1035860A CN 88101349 CN88101349 CN 88101349 CN 88101349 A CN88101349 A CN 88101349A CN 1035860 A CN1035860 A CN 1035860A
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- pedosphere
- hoop
- ground
- foundation
- stake
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Abstract
The present invention relates to a kind of building structure foundation reinforcement method.
The present invention is provided with a circumferential band pedosphere around ground, the hoop pedosphere also can be provided with the native inner ring of hoop with interior ground.The height of hoop pedosphere can be determined according to geological conditions and foundation load.The hoop pedosphere can steel concrete or steel plate site preparation, also can manufacture the preformed pile system of enclosing of being driven underground and form.The present invention can be used for highrise building and the bigger structure ground of load is handled, and is all applicable for the shallow foundation deep foundation design.Can reduce the sinking and the uneven subsidence of ground through the ground of hoop local method processing.
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 compacting, gives pressure, annotates the sandstone stake, methods such as chemical treatment; Normal mat foundation, pile foundation, the box foundation etc. of adopting in basis.Soft foundation reduces setting of ground, particularly uneven subsidence as far as possible in design and construction be the problem that present designer pays close attention to most.The structure that some highrise buildings and load are bigger often adopt higher pile foundation of cost or buried box foundation for this reason, and execution conditions are complicated, in the construction environment and adjacent building structure foundation deformation on every side all had bigger influence.
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 the influence that takes place each other because the inequality ground is out of shape between the adjacent building.
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 give earlier and excavate an annular ditch, field fabrication hoop pedosphere in ditch 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 (Fig. 1).
Give system stake and can be made into " Jiong " shape and "T"-shaped two kinds.Can adopt the stake of " Jiong " shape when big load basis, lateral pressure are big, the stake of " Jiong " shape is squeezed into around ground, adjacent spill of stake inwards, a spill is outside, staggered socket surrounds annular (consulting figure A-A).Load is less, and soil body lateral pressure hour can adopt "T"-shaped stake to enclose system hoop pedosphere.The length (promptly binding round the height of pedosphere) of stake is determined by design." Jiong " shape or "T"-shaped horizontal edge length can be 300-400MM, and vertical edge can be 150-250MM.
Operating principle of the present invention is summarized as follows.
When the load of soft foundation constantly increased, the distortion of ground can present three phases: densification stage, partial cut stage, creeping 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 side direction again.The ground grogs in creeping stage mainly is lateral displacement, and ground gradually destroys in time.Adopt hoop local method Ground Treatment to be controlled at the foundation stress state phase I fully, under foundation load constantly increased, the shear stress that surpasses the shear strength of soil can be born by the hoop pedosphere, and grogs no longer produces 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, and the supporting capacity of ground improves greatly.Because the hoop pedosphere of ground is cut apart outer two zones of lopping inner ring with the soil body, the soil body stress state in a zone no longer influences another regional soil body stress state, therefore bind round the ground of local method processing and can eliminate the influence that causes owing to the ground different distortion between the adjacent building, reduced the differential settlement of ground.
The hoop local method can be used for highrise building and the bigger structure ground of load is handled as foundation reinforcement method independently, 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/meter of maximum loads
2; 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; Measure two oil tank bottom plate sedimentation situations as can be known, No. 2 jar foundation settlement are much smaller than No. 1 jar:
Tank skin 1/4R 1/2R 3/4R R
1
#Jar 0 275 432 401 274(mm)
2
#Jar 0 176 252 232 104(mm)
(R is the oil tank radius)
Claims (3)
1, a kind of soft soil foundation reinforcing method is characterized in that around the ground circumferential band pedosphere being set, and ground can be provided with the native inner ring of hoop in the hoop pedosphere, or carries out consolidation process in conjunction with other reinforcement means, and the hoop pedosphere can steel concrete or steel plate manufacturing.
2, according to the described foundation reinforcement method of claim 1, it is characterized in that binding round pedosphere and form by giving the system stake system of enclosing of being driven underground, give the system stake and can be made into " Jiong " shape or "T"-shaped.
3, according to the described foundation reinforcement method of claim 2, it is characterized in that binding round pedosphere by the stake of " Jiong " shape be driven underground enclose the system form, adjacent " Jiong " shape stake Baltimore groove is cross-linked relatively.
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 true CN1035860A (en) | 1989-09-27 |
| CN1020204C 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) |
Cited By (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 |
| CN112627249A (en) * | 2020-12-07 | 2021-04-09 | 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
Cited By (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 |
| CN112627249A (en) * | 2020-12-07 | 2021-04-09 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1020204C (en) | 1993-03-31 |
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