CN202202318U - Soft soil foundation long-concrete short-gravel pile and preloading combination processing apparatus - Google Patents
Soft soil foundation long-concrete short-gravel pile and preloading combination processing apparatus Download PDFInfo
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- CN202202318U CN202202318U CN2011202316462U CN201120231646U CN202202318U CN 202202318 U CN202202318 U CN 202202318U CN 2011202316462 U CN2011202316462 U CN 2011202316462U CN 201120231646 U CN201120231646 U CN 201120231646U CN 202202318 U CN202202318 U CN 202202318U
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Abstract
The utility model discloses a soft soil foundation long-concrete short-gravel (LCSG) pile and preloading combination processing apparatus, comprising LCSG piles, a horizontal mattress layer and a preloading layer. The LCSG piles are formed by longer concrete pile cores and shorter broken stone pile sleeves, with one pile core and one broken stone pile sleeve being poured together; the horizontal mattress layer is formed by broken stone, coarse sand or mixture of the broken stone and the coarse sand; and the preloading layer is formed by soil, stone or mixture of the soil and the stone. The soft soil foundation long-concrete short-gravel (LCSG) pile and preloading combination processing apparatus integrates vertical settlement and lateral deformation control performances of long concrete piles and compaction and drainage performances of short broken stone piles, thereby improving foundation intensity and reducing settlement after completion of works; and simultaneously integrates the function of accelerating solidification of the preloading method, thereby shortening construction period.
Description
Technical field:
The utility model belongs to the Soft Ground field, relates to compound broken stone pile of the long core concrete of a kind of soft foundation (Long-Concrete Short-Gravel stake is hereinafter to be referred as " LCSG stake ") and piling prepressing united treating apparatus.
Background technology:
Along with the continuous development of China's infrastructure, structure such as the increasing highrise building in coastal area, speedway are built on deep soft foundation.These soft foundations have usually that moisture content is big, void ratio is big, intensity is low, consolidation rate waits characteristics slowly;, structure construction in top can produce bigger vertical sedimentation and lateral deformation usually after finishing; And this sedimentation and deformation process is kept the time of growing, and needs 3 to 5 years even longer time could finish usually.The sedimentation and deformation process will have a strong impact on the inherently safe and the result of use thereof of building structure above that so for a long time, be necessary it is carried out consolidation process.
The method that reinforced soft soil ground is handled mainly contains three types.The first kind is to reduce sedimentation, promptly weak soil is carried out replacement Treatment, replaces natural weak soil with harder soil or constructional materials, like the dirt displacement method.Second type is to quicken sedimentation, promptly before building structure, makes the sedimentation of soft foundation fulfil a part ahead of schedule through the engineering means or its settling rate is accelerated, and fast and stable is like preloading.The 3rd type between between the first kind and second type, has simultaneously and reduce sedimentation and the effect of quickening sedimentation, like the broken stone pile method.For the ground with deep soft soil, all there is certain defective in above-mentioned three class methods.Need a large amount of replacing materials like the dirt displacement method, this has just determined and can not, also need not replace deep soft soil foundation; The needed preconsolidation time of preloading is long, with the increase of lengthening that causes the duration and engineering cost, possibly cause the shear failure of ground; The settling amount that the broken stone pile method reduces is limited and locating the bigger lateral deformation of generation near the face of land usually, influences the monolithic stability of superstructure.
The utility model content:
The purpose of the utility model provides a kind of soft foundation LCSG stake and piling prepressing united treating apparatus; It is characterized in that: comprise the pile foundation layer of forming by some LCSG stakes; Described LCSG stake comprises the concrete pile core; And be arranged at the peripheral rubble pile protection of concrete pile core, and horizontal mattress layer is arranged at the top of pile foundation layer, and precompressed preloading layer is arranged at the top of horizontal mattress layer.
Further:
Described concrete pile core is formed by cylindrical concrete spouting.
Described broken stone pile cover is looped around the top of concrete pile core; Building of rubble pile protection and native with fixed attention stake core is integral composition LCSG stake.
The length of described rubble pile protection is the half the of concrete pile core length.
Preferably:
The diameter of concrete pile core is that 0.4m, length are 20.0m, and the diameter of rubble pile protection is about 0.5m, length is 10m, and the spacing of LCSG stake is 2.5m.
The diameter of concrete pile core is that 0.6m, length are 30.0m, and the diameter of rubble pile protection is about 0.8m, length is 15m, and the spacing of LCSG stake is 3.5m.
Described horizontal mattress layer is the compound of rubble, coarse sand or rubble and coarse sand, and preferably, horizontal mattress layer adopts the continuous rubble of grating, and the thickness of horizontal mattress layer is 0.5m～0.6m, in whole ground scope, lays.
Described precompressed preloading layer is the compound of soil, building stones or soil and building stones.
Preferably:
Precompressed preloading layer is a clay, and the height of precompressed preloading layer is 4.0m, and the branch two-stage applies, every grade of preloading height 2.0m.
Precompressed preloading layer is silt and piece stone compound, and the height of precompressed preloading layer is 5.4m, divides three grades and applies, every grade of preloading height 1.8m.
The beneficial effect of the utility model is: the LCSG pile body of the utility model has carrying, limit lateral distortion, the fixed effect of vertical drainage, simultaneously foundation soil is had compacted effect; Mattress layer mainly has the effect that follow-up work-yard, horizontal drainage and adjustment stake and inter-pile soil stress distribution are provided, and forms vertical, horizontal intersection drainage channel with the rubble pile protection; Preloading mainly has preconsolidation, acceleration draining, reduces the effect of settlement after construction.The utility model not only can control vertical sedimentation, but also can the limit lateral displacement, vertical and horizontal drainage channel can also be provided simultaneously, quicken the consolidation settlement of soft foundation, can guarantee the function of use of structure such as highrise building, speedway, rational construction period and reduce engineering cost.
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.
Description of drawings:
Fig. 1 is the structural representation of LCSG stake of the utility model embodiment soft foundation and piling prepressing united treating apparatus.
Among the figure: the 1st, the concrete pile core; The 2nd, the rubble pile protection; 1 and 2 common formation LCSG stakes; The 3rd, horizontal mattress layer; The 4th, precompressed preloading layer.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, Fig. 1 is a kind of soft foundation LCSG stake and the piling prepressing united treating apparatus of present embodiment, and described combined apparatus comprises three parts:
First is the concrete pile core 1 that is formed by cylindrical concrete spouting; Rubble pile protection 2 is arranged at the periphery of concrete pile core 1; In the present embodiment, the length of concrete pile core 1 is greater than the length of rubble pile protection 2, and rubble pile protection 2 is looped around the top of concrete pile core 1; Building of rubble pile protection 2 and native with fixed attention stake core 1 is integral composition LCSG stake.The length of rubble pile protection 2 is decided according to the relative depth of soft foundation, and more excellent is the half the of concrete pile core 1 length.The diameter of the concrete pile core 1 of LCSG stake in the present embodiment is that 0.4m, length are 20.0m, and the diameter of rubble pile protection 2 is about 0.5m, length is 10m, and the spacing of LCSG stake is 2.5m;
Second portion is horizontal mattress layer 3, and horizontal mattress layer 3 is arranged at the top of LCSG stake, and horizontal mattress layer 3 is the compound of rubble, coarse sand or rubble and coarse sand, and horizontal mattress layer 3 levels are laid on the face of land in the LCSG stake equably.In the present embodiment, horizontal mattress layer 3 adopts the continuous rubble of grating, and the thickness of horizontal mattress layer 3 is 0.5m, in whole ground scope, lays;
Third part is a precompressed preloading layer 4; Precompressed preloading layer 4 is arranged at the top of horizontal mattress layer 3; Precompressed preloading layer 4 is the compound of soil, building stones or soil and building stones, and it mainly plays the densification soil body, impels the discharge of water in the soil body and fulfils the part consolidation settlement ahead of schedule.In the present embodiment, precompressed preloading layer 4 adopts native clay, and the height of precompressed preloading layer 4 is 4.0m, and the branch two-stage applies, every grade of preloading height 2.0m.
The soft foundation LCSG stake of present embodiment and piling prepressing united processing method comprise the steps:
The first step is laid horizontal mattress layer 3 on the face of land; Horizontal mattress layer 3 adopts the continuous rubble of grating, and horizontal mattress layer 3 thickness 0.5m lay in whole ground scope;
In second step, on the ground that lays horizontal mattress layer 3, set broken stone pile to design elevation through immersed tunnelling method;
The 3rd step, through immersed tunnelling method in position (being step 2 piling place) set concrete pile core 1 to its design elevation, the rubble pile body that simultaneously sets step 2 is extruded into the annular pile protection 2 that is looped around around concrete pile core 1 top, forms LCSG stake (1+2);
In the 4th step, according to designing requirement, different places set LCSG stake (1+2) by abovementioned steps successively according to design attitude in the place;
The diameter of the concrete pile core 1 of the LCSG stake that sets is that 0.4m, length are 20.0m, and the diameter of rubble pile protection 2 is about 0.5m, length is 10m, and the spacing of LCSG stake is 2.5m.
In the 5th step, on the LCSG stake position that sets, supply horizontal mattress layer 3;
In the 6th step, on horizontal mattress layer 3, apply precompressed preloading layer 4; Precompressed preloading layer 4 adopts native clay, and waste height is 4.0m, and the branch two-stage applies every grade of preloading height 2.0m.
In the 7th step, precompressed sheds precompressed preloading layer 4 to design time, accomplishes ground treatment construction and does.
Embodiment 2:
A kind of soft foundation LCSG stake of present embodiment and piling prepressing united treating apparatus; Its structure is with embodiment 1; Difference is: the diameter of the concrete pile core 1 of LCSG stake in the present embodiment is that 0.6m, length are 30.0m; The diameter of rubble pile protection 2 is about 0.8m, length is 15m, and the spacing of LCSG stake is 3.5m; Horizontal mattress layer 3 adopts continuous rubble, the coarse sand compound of grating, and thickness 0.6m lays in whole ground scope; Precompressed preloading layer 4 adopts local silt and piece stone compound, and waste height is 5.4m, divides three grades and applies, every grade of preloading height 1.8m.
Through detecting; Adopt LCSG stake and the piling prepressing united treating apparatus and the method thereof of the utility model; In control vertical sedimentation, limit lateral displacement, vertical and horizontal drainage channel be provided, quicken the aspects such as consolidation settlement of soft foundation; Have remarkable engineering effort, can guarantee function of use, the rational construction period of structure such as highrise building, speedway and reduce engineering cost.
Claims (7)
1. soft foundation LCSG stake and piling prepressing united treating apparatus; It is characterized in that: comprise the pile foundation layer of forming by some LCSG stakes; Described LCSG stake comprises the concrete pile core; And be arranged at the peripheral rubble pile protection of concrete pile core, and horizontal mattress layer is arranged at the top of pile foundation layer, and precompressed preloading layer is arranged at the top of horizontal mattress layer.
2. a kind of soft foundation LCSG according to claim 1 stake and piling prepressing united treating apparatus is characterized in that: described concrete pile core is formed by cylindrical concrete spouting.
3. a kind of soft foundation LCSG according to claim 1 stake and piling prepressing united treating apparatus is characterized in that: the length of described rubble pile protection is the half the of concrete pile core length, and the broken stone pile cover is looped around the top of concrete pile core; Building of rubble pile protection and native with fixed attention stake core is integral composition LCSG stake.
4. a kind of soft foundation LCSG according to claim 1 stake and piling prepressing united treating apparatus; It is characterized in that: the diameter of concrete pile core is that 0.4m, length are 20.0m; The diameter of rubble pile protection is about 0.5m, length is 10m, and the spacing of LCSG stake is 2.5m.
5. a kind of soft foundation LCSG according to claim 1 stake and piling prepressing united treating apparatus; It is characterized in that: the diameter of concrete pile core is that 0.6m, length are 30.0m; The diameter of rubble pile protection 2 is about 0.8m, length is 15m, and the spacing of LCSG stake is 3.5m.
6. a kind of soft foundation LCSG according to claim 1 stake and piling prepressing united treating apparatus is characterized in that: precompressed preloading layer waste height is 4.0m, divides two-stage, every grade of preloading height 2.0m.
7. a kind of soft foundation LCSG according to claim 1 stake and piling prepressing united treating apparatus is characterized in that: precompressed preloading layer waste height is 5.4m, divides three grades, every grade of preloading height 1.8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202316462U CN202202318U (en) | 2011-07-04 | 2011-07-04 | Soft soil foundation long-concrete short-gravel pile and preloading combination processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202316462U CN202202318U (en) | 2011-07-04 | 2011-07-04 | Soft soil foundation long-concrete short-gravel pile and preloading combination processing apparatus |
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| CN202202318U true CN202202318U (en) | 2012-04-25 |
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| CN2011202316462U Expired - Fee Related CN202202318U (en) | 2011-07-04 | 2011-07-04 | Soft soil foundation long-concrete short-gravel pile and preloading combination processing apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312424A (en) * | 2011-07-04 | 2012-01-11 | 绍兴文理学院 | Soft soil foundation long-concrete short-gravel (LCSG) pile and preloading combined treatment method and device thereof |
| CN104746507A (en) * | 2015-04-01 | 2015-07-01 | 江苏建院营造有限公司 | Construction waste recycling drainage CFG pile foundation and construction method thereof |
| CN105064387A (en) * | 2015-08-17 | 2015-11-18 | 合肥市市政设计院有限公司 | Method for adjusting anti-thrust rigidity of pile group foundation |
-
2011
- 2011-07-04 CN CN2011202316462U patent/CN202202318U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312424A (en) * | 2011-07-04 | 2012-01-11 | 绍兴文理学院 | Soft soil foundation long-concrete short-gravel (LCSG) pile and preloading combined treatment method and device thereof |
| CN104746507A (en) * | 2015-04-01 | 2015-07-01 | 江苏建院营造有限公司 | Construction waste recycling drainage CFG pile foundation and construction method thereof |
| CN105064387A (en) * | 2015-08-17 | 2015-11-18 | 合肥市市政设计院有限公司 | Method for adjusting anti-thrust rigidity of pile group foundation |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20140704 |
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| EXPY | Termination of patent right or utility model |