CN204510190U - The three-dimensional composite foundation of a kind of Deep Thick Soft Ground - Google Patents
The three-dimensional composite foundation of a kind of Deep Thick Soft Ground Download PDFInfo
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- CN204510190U CN204510190U CN201520064821.1U CN201520064821U CN204510190U CN 204510190 U CN204510190 U CN 204510190U CN 201520064821 U CN201520064821 U CN 201520064821U CN 204510190 U CN204510190 U CN 204510190U
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- soft ground
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Abstract
The utility model discloses the three-dimensional composite foundation of a kind of Deep Thick Soft Ground.The three-dimensional composite foundation of this Deep Thick Soft Ground strengthens long stake by cement-soil, Soil-cement stub, composite strengthening mattress layer three part are formed, wherein cement-soil strengthens long stake is inverted T shape feature, be made up of shallow-layer and deep layer, the stake of CFG core is established in its mid-deep strata, shallow-layer and Soil-cement stub isometrical, and plain concrete reinforcing band is set in long stake short lamellar spacing; Composite strengthening mattress layer is from bottom to top rigidity mattress layer, by-level enhancement layer, top flexible cushion layer.The utility model has considered the achievement in research of long-short pile, hard and soft stake, multiple composite foundation such as stake-net system, horizontal grate etc., effectively can control cement mixing method settling amount, strengthen bearing capacity of foundation soil and reliability is high.
Description
one, technical field
The utility model relates to a kind of the realm of building construction, is the three-dimensional composite foundation of a kind of Deep Thick Soft Ground specifically.
two, background technology
It is low that weak soil has shear strength, compressibilty is large, void ratio is large, water content is high, the rheological characteristic geotechnological characteristic such as by force, therefore current generally adopt original position ground to carry out in Soft Ground field engineering properties that consolidation process improves weak soil, with the sedimentation needed for satisfied design and construction and bearing capacity control overflow, conventional original position soft base processing method has dynamic compaction, the method of mixing cement and soil into pile, consolidation, the multiple method such as geosynthetic fabrics, but above-mentioned soft base processing method improves limited for Soft Soil-composite Foundation fastening strength, and settlement Control can not meet the soft foundation design requirement based on Deformation control that current China advocates, and easily produce settlement after construction, and although prestressed concrete pipe pile intensity is desirable, but involve great expense and also limit applying of it, therefore desirable Soft Soil-composite Foundation should provide higher bearing capacity at effective control settlement simultaneously, there is while playing the strength of materials feature of economical rationality, meet the requirement of code for foundation for bearing capacity and controlling distortion simultaneously.
three, utility model content
For solving the deficiency of prior art structure, the utility model provides the three-dimensional composite foundation of a kind of Deep Thick Soft Ground and construction method, ensureing, under the condition that bearing capacity of foundation soil meets, can effectively control soft foundation settlement after construction and effectively can reduce construction costs, reducing later maintenance expense.
The utility model is realized by following technical proposals: strengthen long stake 1 by deep cement soil, Soil-cement stub 2, composite strengthening mattress layer 9 three part form, wherein cement-soil strengthens long stake 1 and Soil-cement stub 2 is arranged according to " interlacing dislocation ", the long stake of Soil-cement 1 comprises long stake deep layer 6 and long stake shallow-layer 4 two parts, the plan view that Fig. 1 arranges for " interlacing dislocation ", wherein deep cement soil strengthens long stake 1 and Soil-cement stub 2 axis spacing is respectively the stake footpath that 8D ~ 12D(D is long stake shallow-layer 4).Fig. 2 is the structural representation that deep cement soil strengthens long stake, wherein long stake deep layer 6 footpaths, stake is long is respectively 100cm ~ 160cm, 5.0m ~ 10.0m, long stake shallow-layer 4 footpaths, stake is long is respectively 50cm ~ 80cm, 7.0m ~ 12.0m, deep cement soil strengthens long stake 1 entirety and presents inverted T shape feature, the reaming of deep layer reducing is carried out by strengthening long stake 1 to deep cement soil, stake-soil contact face can be increased amass, and provide larger pile side friction to form deep layer displacement, effectively can control inter-pile soil 7 sedimentation and deformation of long stake deep layer 6 influence area, in long stake deep layer 6, static-pressure precast CFG core stake 5 is put more energy into and can be born larger vertical load, give full play to the advantage of two kinds of pile-type, the bearing capacity of the long stake of effective raising, ensure the vertical humidification of composite foundation.Soil-cement stub 2 footpaths, the long and long stake shallow-layer 4 of stake are identical, and it is concordant with long stake shallow-layer 4 end, as shown in Figure 3, the plain concrete reinforcing band 3 that the degree of depth is 500mm ~ 1000mm is set along Soil-cement stub 2 plane axis simultaneously, its width is no more than Soil-cement stub diameter, and as shown in Figure 1, plain concrete reinforcing band 3 forms cooperative bearing system jointly with composite foundation, highlight and enclose hoop effect, contribute to the supporting capacity strengthening composite foundation.Composite strengthening mattress layer 9 is made up of rigidity mattress layer 10, horizontal enhancement layer 11, flexible cushion layer 8 three part, rigidity mattress layer 10 THICKNESS CONTROL is at 200mm ~ 350mm, the selection of horizontal enhancement layer 11 is two-way horizontal grid, material specification parameter is determined according to design, flexible cushion layer 8 THICKNESS CONTROL is at 150mm ~ 200mm, compensated by the sedimentation of composite strengthening mattress layer 9, two-way enhancing, three-dimensional composite foundation can be formed with vertical pile foundation, ensure the reliability of technical measures, meet the bearing capacity control overflow of China's code for foundation.
The beneficial effect of the utility model patent is: the bearing capacity that not only can significantly improve deep soft soil foundation, and effectively can control the sedimentation and deformation of composite foundation, improve the safety and stability of composite foundation, play the strength characteristics of material, compare with pile for prestressed pipe and saved construction costs, and technically reliable, is convenient to promote the use of.
four, accompanying drawing explanation
Fig. 1 is that composite foundation of the present utility model " interlacing dislocation " stake bit plane arranges schematic diagram.
Fig. 2 is that cement soil deep of the present utility model strengthens long stake generalized section.
Fig. 3 is composite foundation generalized section of the present utility model.
Accompanying drawing illustrates: 1, deep cement soil strengthens long stake; 2, Soil-cement stub; 3, plain concrete reinforcing band; 4, long stake shallow-layer; 5, prefabricated CFG core stake; 6, long stake deep layer; 7, inter-pile soil; 8, flexible cushion layer; 9, composite strengthening mattress layer; 10, rigidity mattress layer; 11, middle reinforcement layer.
five, detailed description of the invention
Three-dimensional composite foundation disclosed in the utility model strengthens long stake 1 by deep cement soil, Soil-cement stub 2, composite strengthening mattress layer 9 three part forms, deep cement soil strengthens long stake 1 and is made up of long stake deep layer 6 and long stake shallow-layer 4, global sections becomes inverted T shape, wherein between long stake, distance of shaft centers is 5.0m between stub and between long-short pile, long stake deep layer 6 footpaths are 100cm, stake is long is 10.0m, and deep cement soil strengthens in long stake 1 and is prefabricated with CFG core stake 5, its footpath is 300mm, the long effective length of stake is 20m, long stake shallow-layer 4 footpaths are 50cm, the long 10.0m of stake, the contour isometrical and two ends of Soil-cement stub 2 and long stake shallow-layer 4 flush.Arranging width at Soil-cement stub 2 plane axis place is 300mm, and the degree of depth is the plain concrete reinforcing band 3 of 500mm.Composite strengthening mattress layer 9 sets gradually rigidity mattress layer 10, horizontal enhancement layer 11 and flexible cushion layer 8 from the bottom to top, wherein rigidity mattress layer 10 is the good compacting rubble of grating, thickness is 250mm, horizontal enhancement layer 11 is the two-way Glass Fibre Earth Grid that same rigidity mattress layer 10 is fixed, flexible cushion layer 8 is the backfill element earthen backfill of closely knit process, and thickness is 150mm.
According to finite element comparative analysis result, at identical geological conditions, and meet that typical cement mixing method (wet method) stake is long, stake footpath is equal to the Soil-cement stub 2 related in the present invention, when simultaneously stake end in top lays 200mm thick graded sand and stone mattress layer condition, typical case's Composite Foundation of Soil cement Mixing Piles standard value of bearing capacity is 172.6kPa, and the three-dimensional nominal value of bearing capacity of composite foundation of the Deep Thick Soft Ground that the present embodiment proposes reaches 370.1kPa, increase rate reaches 214%, can meet design requirement when not doing adjusting for depth; Two kinds of dissimilar composite foundation p-s results are obtained according to finite element analysis, do not consider the weak soil secondary consolidation, the factor such as creep properties and weak substratum that affect About Residual Settlement of Composite Foundation, typical case's cement mixing method (wet method) largest settlement is 65mm, average settlement amount is 42mm, and the three-dimensional composite foundation largest settlement of the Deep Thick Soft Ground that the utility model proposes is 38mm, average settlement amount is only 19mm, Deformation control Be very effective.
Claims (9)
1. the three-dimensional composite foundation of Deep Thick Soft Ground, is characterized in that: the three-dimensional composite foundation of this Deep Thick Soft Ground strengthens long stake by deep cement soil, Soil-cement stub, composite strengthening mattress layer three part are formed.
2. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 1, is characterized in that: described composite strengthening mattress layer from bottom to top by rigidity mattress layer, middle reinforcement layer and flexible cushion layer three part form.
3. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 2, is characterized in that: described rigidity mattress layer thickness is 200mm ~ 350mm, and described flexible cushion layer thickness is 150mm ~ 200mm.
4. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 2, is characterized in that: described middle reinforcement layer is two-way horizontal grid.
5. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 1, it is characterized in that: it is that the long stake deep layer of inverted T shape and the short layer of long stake form that described deep cement soil strengthens long stake by entirety, wherein the short layer of long stake and Soil-cement stub are with the contour neat end in footpath, and static-pressure precast CFG core stake in long stake deep layer.
6. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 5, is characterized in that: described long stake deep layer stake footpath, stake is long is respectively 100cm ~ 160cm, 5.0m ~ 10.0m.
7. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 5, is characterized in that: described long stake shallow-layer stake footpath, stake is long is respectively 50cm ~ 80cm, 7.0m ~ 12.0m.
8. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 5, is characterized in that: in described long stake shallow-layer gap, be also provided with along Soil-cement stub plane axis the plain concrete reinforcing band that width is no more than Soil-cement stub diameter.
9. the three-dimensional composite foundation of a kind of Deep Thick Soft Ground according to claim 8, is characterized in that: the described plain concrete reinforcing band degree of depth is 500mm ~ 1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064821.1U CN204510190U (en) | 2015-01-30 | 2015-01-30 | The three-dimensional composite foundation of a kind of Deep Thick Soft Ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064821.1U CN204510190U (en) | 2015-01-30 | 2015-01-30 | The three-dimensional composite foundation of a kind of Deep Thick Soft Ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204510190U true CN204510190U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520064821.1U Expired - Fee Related CN204510190U (en) | 2015-01-30 | 2015-01-30 | The three-dimensional composite foundation of a kind of Deep Thick Soft Ground |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612127A (en) * | 2015-01-30 | 2015-05-13 | 唐山工业职业技术学院 | Three-dimensional deep soft soil composite foundation and construction method |
| CN106087941A (en) * | 2016-06-30 | 2016-11-09 | 涓ュ钩 | The method for processing foundation of big thickness lattice soil cement bed course wall in weak soil |
| CN115045259A (en) * | 2022-06-30 | 2022-09-13 | 深圳厚坤软岩科技有限公司 | Rigid-flexible composite thick-shell composite foundation technology and construction method |
-
2015
- 2015-01-30 CN CN201520064821.1U patent/CN204510190U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612127A (en) * | 2015-01-30 | 2015-05-13 | 唐山工业职业技术学院 | Three-dimensional deep soft soil composite foundation and construction method |
| CN106087941A (en) * | 2016-06-30 | 2016-11-09 | 涓ュ钩 | The method for processing foundation of big thickness lattice soil cement bed course wall in weak soil |
| CN106087941B (en) * | 2016-06-30 | 2019-01-01 | 严平 | The method for processing foundation of big thickness lattice cement soil padding wall in weak soil |
| CN115045259A (en) * | 2022-06-30 | 2022-09-13 | 深圳厚坤软岩科技有限公司 | Rigid-flexible composite thick-shell composite foundation technology and construction method |
| CN115045259B (en) * | 2022-06-30 | 2024-08-09 | 深圳厚坤软岩科技有限公司 | Construction method of rigid-flexible composite thick-shell composite foundation |
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| 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: 20150729 Termination date: 20160130 |
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| EXPY | Termination of patent right or utility model |