CN202936772U - Long-short vibro-replacement stone column for treating badly liquefied foundation - Google Patents
Long-short vibro-replacement stone column for treating badly liquefied foundation Download PDFInfo
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- CN202936772U CN202936772U CN 201220597042 CN201220597042U CN202936772U CN 202936772 U CN202936772 U CN 202936772U CN 201220597042 CN201220597042 CN 201220597042 CN 201220597042 U CN201220597042 U CN 201220597042U CN 202936772 U CN202936772 U CN 202936772U
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Abstract
The utility model provides a long-short vibro-replacement stone column for treating a badly liquefied foundation. The long-short vibro-replacement stone column comprises long columns and short columns, wherein the long columns and the short columns are arranged at intervals; and broken stone hardcores are arranged at the tops of the long columns and the short columns. The long-short vibro-replacement stone column employing the technical scheme is mainly characterized in that when all liquefaction settlement of the badly liquefied soil is eliminated, the broken stone columns are used as excellent drainage channels so that the horizontal osmosis path of pore water is greatly shortened, the pressure of the pore water is reduced and soil liquefaction is eliminated, and simultaneously, drainage consolidation of the composite foundation can be accelerated and the strength of the foundation is improved. However, the effective stress of soil in deep soil is high and the influence of the pressure of the pore water on the deep soil is low, so that two much broken stone column for reducing the pressure of the pore water are not needed in the deep soil; in combination with the feature, long and short columns are matched with each other for use in the broken stone column design so that the purposes of eliminating liquefaction and improving the bearing capacity; and besides, the materials are greatly saved, the construction period is shortened and excellent economic benefit is achieved.
Description
Technical field
The utility model relates to a kind of vibro replacement stone column and processes serious liquefied foundation, specifically refers to that the length vibro replacement stone column is used in conjunction with the serious liquefied foundation of processing.
Background technology
During earthquake, liquefying soil is under the effect of earthquake, and its granulated aggregate produces plastic strain, and volume reduces.Due to the discharge rate of earthquake motion ringing speed much larger than liquefying soil, therefore in the moment of geological process, the liquefying soil pore water has little time to discharge, now pore water pressure rises rapidly, cause the effective stress in soil particle to reduce rapidly, it is softening that the soil body is tending towards, and when native effective stress equals zero, the total stress of upper overburden layer is all born by pore water.Under the ringing of earthquake motion, soil body Particles Suspension, in pore water, loses its shear strength fully, causes foundation soil to lose efficacy and the sandblast preventing water phenomenon occurs, and building sinks, tilts or cracking, the safety of impact building.Need liquefying soil is processed for this reason, eliminate its liquefaction property, on engineering, isometric vibro replacement stone column commonly used carrys out the process liquefaction soil layer, and the method is not considered the difference of liquefying soil characteristic on depth profile, although respond well uneconomical.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of length vibro replacement stone column of processing serious liquefied foundation.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of length vibro replacement stone column of processing serious liquefied foundation, it comprises long stake and stub, described long stake and stub interval are arranged; And in long stake and stub top, hardcore bed is set.
Described hardcore bed thickness is 400mm.
Adopt the utility model of technique scheme, main feature is that serious liquefaction earth is when all eliminating the liquefaction sedimentation, rely on the rubble pile body as drainage channel good in foundation soil, greatly shorten pore water horizontal permeation path, reduce pore water pressure and eliminate liquefaction of soil mass, can accelerate the composite foundation discharging consolidation, improve foundation strength simultaneously.But in deep soil, the effective stress of soil is larger, pore water pressure is little on the deep soil impact, therefore not wanting too many broken stone pile in deep soil reduces pore water pressure, in conjunction with the length stake in the broken stone pile design of these characteristics, be used in conjunction with, both can reach the purpose of eliminating liquefaction, improving bearing capacity, have and significantly saved material, shortened the duration, good economic benefit is arranged.
The accompanying drawing explanation
Fig. 1 is length vibro replacement stone column layout schematic diagram.
Fig. 2 is that pile body is arranged sectional drawing
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of length vibro replacement stone column of processing serious liquefied foundation, it comprises long stake 1 and stub 2, long stake 1 and stub 2 is used in conjunction with and interval is arranged forms common stressed composite foundation thus.And in long stake 1 and stub 2 tops, the hardcore bed 3 that 400mm is thick is set, this hardcore bed 3 plays the horizontal drainage effect, be conducive to the rapidly solidified of rear soil layer of constructing, more can play obvious stress diffusion, reduce the annex stress of broken stone pile and all figure of stake, reduce the lateral deformation of broken stone pile, thereby improve, meet foundation capability, reduce the foundation deformation amount.
Claims (2)
1. a length vibro replacement stone column of processing serious liquefied foundation, it is characterized in that: it comprises long stake (1) and stub (2), described long stake (1) and stub (2) interval layout; And in long stake (1) and stub (2) top, hardcore bed (3) is set.
2. the length vibro replacement stone column of the serious liquefied foundation of processing according to claim 1, it is characterized in that: described hardcore bed (3) thickness is 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220597042 CN202936772U (en) | 2012-11-14 | 2012-11-14 | Long-short vibro-replacement stone column for treating badly liquefied foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220597042 CN202936772U (en) | 2012-11-14 | 2012-11-14 | Long-short vibro-replacement stone column for treating badly liquefied foundation |
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| Publication Number | Publication Date |
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| CN202936772U true CN202936772U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220597042 Expired - Fee Related CN202936772U (en) | 2012-11-14 | 2012-11-14 | Long-short vibro-replacement stone column for treating badly liquefied foundation |
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| CN (1) | CN202936772U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452121A (en) * | 2013-08-26 | 2013-12-18 | 中冶集团武汉勘察研究院有限公司 | Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof |
| CN104404944A (en) * | 2014-12-03 | 2015-03-11 | 中国电建集团成都勘测设计研究院有限公司 | Liquefaction-prevention method for liquefiable sandy soil layer |
| CN112030934A (en) * | 2020-08-26 | 2020-12-04 | 中交第四航务工程局有限公司 | Anti-liquefaction treatment method for liquefiable foundation |
| CN114293533A (en) * | 2022-01-10 | 2022-04-08 | 北京宏创天业建设工程有限公司 | Uniform reinforcement structure for vibroflotation pile composite foundation and design method |
-
2012
- 2012-11-14 CN CN 201220597042 patent/CN202936772U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452121A (en) * | 2013-08-26 | 2013-12-18 | 中冶集团武汉勘察研究院有限公司 | Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof |
| CN104404944A (en) * | 2014-12-03 | 2015-03-11 | 中国电建集团成都勘测设计研究院有限公司 | Liquefaction-prevention method for liquefiable sandy soil layer |
| CN104404944B (en) * | 2014-12-03 | 2016-08-17 | 中国电建集团成都勘测设计研究院有限公司 | The anti-liquifying method of liquefiable sandy soil layer |
| CN112030934A (en) * | 2020-08-26 | 2020-12-04 | 中交第四航务工程局有限公司 | Anti-liquefaction treatment method for liquefiable foundation |
| CN112030934B (en) * | 2020-08-26 | 2021-12-03 | 中交第四航务工程局有限公司 | Anti-liquefaction treatment method for liquefiable foundation |
| CN114293533A (en) * | 2022-01-10 | 2022-04-08 | 北京宏创天业建设工程有限公司 | Uniform reinforcement structure for vibroflotation pile composite foundation and design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20131114 |