CN203238616U - Earthquake-resistance and hazard-reduction system for liquefiable foundation - Google Patents
Earthquake-resistance and hazard-reduction system for liquefiable foundation Download PDFInfo
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- CN203238616U CN203238616U CN2012207284246U CN201220728424U CN203238616U CN 203238616 U CN203238616 U CN 203238616U CN 2012207284246 U CN2012207284246 U CN 2012207284246U CN 201220728424 U CN201220728424 U CN 201220728424U CN 203238616 U CN203238616 U CN 203238616U
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- pressure dissipation
- pore pressure
- water discharging
- discharging body
- dissipation water
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Abstract
The utility model discloses an earthquake-resistance and hazard-reduction system for a liquefiable foundation. According to the earthquake-resistance and hazard-reduction system for the liquefiable foundation, permanent vertical hole pressure dissipation drainage bodies and a horizontal hole pressure dissipation drainage body are arranged in the liquefiable foundation, and the vertical hole pressure dissipation drainage bodies and the horizontal hole pressure dissipation drainage body are communicated and are connected with a surface drainage system. Due to the facts that permanent excess pore water pressure dissipation channels are arranged for the liquefiable foundation, excess quiet pore water pressure is controlled and is reduced, and prevention is carried out on the source for liquidation generation, the earthquake-resistance anti-liquefying performance of the liquefiable foundation is improved. The arranged dissipation channels can be arranged before reinforcement of the liquefiable foundation, can serve as a drainage system of foundation processing in the construction period, can serve as permanent excess quiet pore water pressure dissipation channels after the construction period ends, and can also be arranged after reinforcement of the liquefiable foundation to serve as permanent facilities in the operation period.
Description
Technical field
The utility model relates to the technical field of the Soft Ground such as port works, traffic engineering, construction work, highway engineering.
Background technology
Sustained and rapid development along with China's economy, the infrastructure scale of China's Coastal Areas is unprecedented in recent years, in order to solve the engineering problems of land utilization such as port and pier, building, highway, a large amount of reclamation engineerings has been carried out in the areas such as Tianjin, Wenzhou, Lianyun Harbour, Xiamen, Nansha Area, Guangzhou and Shenzhen Yantian in recent years.
These engineerings are to carry out the materials such as waterpower hydraulic reclamation waste silt, powder fine sand, silt at the beach that deposits mostly, then carry out ground stabilization and process.Because the engineering quantity of China's reclaiming land around sea has reached unprecedented scale, caused the worsening shortages of hydraulic reclamation resource, the antidetonation preferably medium coarse sand that liquefies particularly, in a lot of local conditions that to use without sand that faced, for this situation, increasing engineering adopts local than more rich flour sand, fine sand, such as Harbor, Tianjin, Cao Feidian etc.This class hydraulic reclamation material is exactly the problem of liquefaction to the engineering properties of Effects on Engineering maximum, in addition generally below barged-in fill, also extensively distribute deep mud, layer of sand, powder soil horizon, argillic horizon of these coastal areas, these waterpower hydraulic reclamations and original saturated powder fine sand, the Liquefaction of silt under the effect of earthquake are global difficult problems, particularly behind completion of works, superstructure is during runing.
Under the horizontal vibration effect that earthquake produces, the position will occur to adjust and be tending towards closely knit between the soil body, and soil body change is closely knit certainly will get rid of pore water.If under rapid periodicity dynamic loading, if the water permeability of the soil body is bad and impeded drainage, the draining in last cycle is not also finished, rear again draining of a cycle, the water that should drain has little time to discharge, and water is incompressible, so just produced excess pore water pressure, this moment, the shear strength of sand greatly reduced.With the time of vibration continuity, excess pore water pressure is constantly accumulated stack and is increased, and the shear strength of the soil body is completely lost, and this phenomenon is referred to as liquefaction.
The sand liquefaction phenomenon is as a kind of principal mode of earthquake disaster; usually can cause differential settlement and the structural damage of building foundation; as: sandblast stream soil, bunding slump, ground cracking sinking, construction cracking collapse, harbour destruction etc.; cause major disaster and casualties, bring huge disaster to the mankind.
It is the necessary condition that liquefaction occurs that excess pore water pressure raises.Reduce saturated sand, silt outside power particularly the pore water pressure under the cyclic force effect be a kind of important channel that solves liquefaction.
The utility model content
The utility model aims to provide a kind of effective, convenient, the saving cost, is applied to the method that Liquefaction Foundation improves antidetonation mitigation performance.
In order to achieve the above object, the utility model has adopted following technology: a kind of antidetonation disaster reduction system of Liquefaction Foundation, it is characterized in that, permanent vertical pore pressure dissipation water discharging body and horizontal pore pressure dissipation water discharging body are set in Liquefaction Foundation, and vertical pore pressure dissipation water discharging body is communicated with horizontal pore pressure dissipation water discharging body and joins with the top drainage system.
Described vertical pore pressure dissipation water discharging body runs through sand or the powder soil horizon that arrives Liquefaction Foundation.
Described horizontal pore pressure dissipation water discharging body is layed in the stabilized zone of foundation settlement, or liquable sand or powder soil horizon, to prevent the displacement that ground produces horizontal pore pressure dissipation water discharging body is destroyed.
Specifically, described vertical pore pressure dissipation water discharging body is selected from one or more the adrainage material in collecting well, pipe well, vertical plastic draining board, cardboard, sand pile, sand wick, the sand-gravel pile.
Specifically, described horizontal pore pressure dissipation water discharging body is selected from one or more drainage patterns such as sand cushion, hardcore bed or slag bed course, plastic draining board, plastic blind-ditch, rubble french drain, sand quilt, sand pocket, horizontal drainage ditch, horizontal drain pipe.
Further, described horizontal pore pressure dissipation water discharging body surface also is coated with and prevents that external impurities from entering horizontal pore pressure dissipation passage and producing the anti-blocking layer of obstruction, and described anti-blocking layer is selected from one or more materials such as geotextile that cover plate is used for filtration.
The connected mode of described vertical pore pressure dissipation water discharging body and horizontal pore pressure dissipation water discharging body is selected from overlap joint, the mixing of one or more modes in bundling, tying up is used.
The utility model arranges nonvolatil dissipation of excess pore-water pressure passage for Liquefaction Foundation, controls and has lowered excess pore water pressure, prevents and treats from the source that produces liquefaction, thereby improves the antidetonation liquefaction performance of this ground.The dissipation passage is set can be arranged before ground stabilization, the drainage system that the construction period processes as ground, the construction period finish after as permanent excess pore water pressure dissipation passage.After also can being arranged in ground stabilization, as the permanent facility of operation phase.
Description of drawings
Fig. 1 is the schematic diagram of the antidetonation disaster reduction system of Liquefaction Foundation.
Wherein, the horizontal pore pressure dissipation water discharging body of the vertical pore pressure dissipation water discharging body of Liquefaction Foundation 123 top drainage systems 4
The specific embodiment
Embodiment 1
This example is for arranging the embodiment of antidetonation disaster reduction system in the Liquefaction Foundation of finishing consolidation process.
1, as shown in Figure 1, the Liquefaction Foundation 1 for finishing consolidation process.In this ground, plug vertical pore pressure dissipation water discharging body 2.Described vertical pore pressure dissipation water discharging body is selected from one or more the adrainage material in collecting well, pipe well, vertical plastic draining board, cardboard, sand pile, sand wick, the sand-gravel pile.Described vertical pore pressure dissipation water discharging body 2 must run through mud, mucky soil or the argillic horizon that the surface may exist, and arrives sand or powder soil horizon in the Liquefaction Foundation.
Vertical pore pressure dissipation water discharging body 2 plug spacing and the degree of depth is calculated according to the architectural characteristic of geological conditions, antidetonation grade or building.
2, lay horizontal pore pressure dissipation water discharging body 3 on the surface of Liquefaction Foundation 1, cover cover plate, outsourcing geotextiles or filtration beds, prevent other foreign material admission passages, keep the patency of its draining.Wherein, described horizontal pore pressure dissipation water discharging body is selected from one or more drainage patterns such as sand, rubble or slag bed course, plastic draining board, plastic blind-ditch, rubble french drain, sand quilt, sand pocket, horizontal drainage ditch, horizontal drain pipe.
Described horizontal pore pressure dissipation water discharging body is layed in the stabilized zone of foundation settlement, or the sand in the Liquefaction Foundation 1 or powder soil horizon, the degree of depth that sand or powder soil horizon are imbedded in requirement is at least more than the 50cm, prevents that the displacement that ground produces from destroying horizontal pore pressure dissipation water discharging body.According to water-flowing amount and the draining characteristics of vertical pore pressure dissipation water discharging body 2, the spacing of calculated level pore pressure dissipation water discharging body, draining parameter etc.
3, vertical pore pressure dissipation water discharging body 2 is connected with horizontal pore pressure dissipation water discharging body 3, the mixing of one or more modes such as the mode of connection can adopt overlap joint, bundle, tie up is used.
4, top drainage system 4 is the town road Uniting.Horizontal pore pressure dissipation water discharging body 3 is connected with top drainage system 4, forms the pore pressure dissipation passage of solid space.The mode that connects can adopt the mixing of one or more modes such as bind, provided pipe overlap joint, communicating pipe to use, thereby so that the excess pore water pressure that earthquake produces can unimpeded, rapidly discharge.
Embodiment 2
This example is for arranging the embodiment of antidetonation disaster reduction system in the Liquefaction Foundation before ground stabilization is processed.
Before ground stabilization, the antidetonation disaster reduction system of Liquefaction Foundation of the present utility model is set, setting steps does not repeat them here as described in respectively going on foot such as embodiment.The antidetonation disaster reduction system that sets, the ingredient as ground stabilization measure in the construction belongs to permanent structure.
Carrying out ground stabilization according to actual conditions processes.
After ground stabilization is finished, keep this antidetonation disaster reduction system as the permanent passage of the excess pore water pressure of ground dissipation earthquake generation.
Claims (7)
1. the antidetonation disaster reduction system of a Liquefaction Foundation, it is characterized in that, permanent vertical pore pressure dissipation water discharging body and horizontal pore pressure dissipation water discharging body are set in Liquefaction Foundation, and vertical pore pressure dissipation water discharging body is communicated with horizontal pore pressure dissipation water discharging body and joins with the top drainage system.
2. the antidetonation disaster reduction system of Liquefaction Foundation according to claim 1, it is characterized in that: described vertical pore pressure dissipation water discharging body runs through sand or the powder soil horizon that arrives Liquefaction Foundation.
3. the antidetonation disaster reduction system of Liquefaction Foundation according to claim 1, it is characterized in that: described horizontal pore pressure dissipation water discharging body is layed in the stabilized zone of foundation settlement, perhaps is layed in sand or the powder soil horizon of Liquefaction Foundation.
4. the antidetonation disaster reduction system of Liquefaction Foundation according to claim 1 is characterized in that: described vertical pore pressure dissipation water discharging body is selected from one or more the adrainage material in collecting well, pipe well, vertical plastic draining board, cardboard, sand pile, sand wick, the sand-gravel pile.
5. the antidetonation disaster reduction system of Liquefaction Foundation according to claim 1, it is characterized in that: described horizontal pore pressure dissipation water discharging body is selected from one or more drainage patterns in sand cushion, hardcore bed or slag bed course, plastic draining board, plastic blind-ditch, rubble french drain, sand quilt, sand pocket, horizontal drainage ditch, the horizontal drain pipe.
6. the antidetonation disaster reduction system of Liquefaction Foundation according to claim 1, it is characterized in that: described horizontal pore pressure dissipation water discharging body surface also is coated with and prevents that external impurities from entering horizontal pore pressure dissipation passage and producing the anti-blocking layer of obstruction, and described anti-blocking layer is selected from cover plate or is used for one or more materials of the geotextile of filtration.
7. the antidetonation disaster reduction system of Liquefaction Foundation according to claim 1 is characterized in that: the connected mode of described vertical pore pressure dissipation water discharging body and horizontal pore pressure dissipation water discharging body is selected from overlap joint, the mixing of one or more modes in bundling, tying up is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207284246U CN203238616U (en) | 2012-12-26 | 2012-12-26 | Earthquake-resistance and hazard-reduction system for liquefiable foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207284246U CN203238616U (en) | 2012-12-26 | 2012-12-26 | Earthquake-resistance and hazard-reduction system for liquefiable foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203238616U true CN203238616U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207284246U Expired - Fee Related CN203238616U (en) | 2012-12-26 | 2012-12-26 | Earthquake-resistance and hazard-reduction system for liquefiable foundation |
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| CN (1) | CN203238616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015399A (en) * | 2012-12-26 | 2013-04-03 | 中交四航工程研究院有限公司 | Earthquake disaster reduction system for liquefiable foundation and foundation treatment method |
-
2012
- 2012-12-26 CN CN2012207284246U patent/CN203238616U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015399A (en) * | 2012-12-26 | 2013-04-03 | 中交四航工程研究院有限公司 | Earthquake disaster reduction system for liquefiable foundation and foundation treatment method |
| CN103015399B (en) * | 2012-12-26 | 2015-09-16 | 中交四航工程研究院有限公司 | The quake evaluation system of Liquefaction Foundation and method for processing foundation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20211226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |