CN103993604A - Scattered piled anchor foundation pit supporting structure - Google Patents
Scattered piled anchor foundation pit supporting structure Download PDFInfo
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- CN103993604A CN103993604A CN201410247914.8A CN201410247914A CN103993604A CN 103993604 A CN103993604 A CN 103993604A CN 201410247914 A CN201410247914 A CN 201410247914A CN 103993604 A CN103993604 A CN 103993604A
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- foundation pit
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Abstract
The invention discloses a scattered piled anchor foundation pit supporting structure. Supporting piles distributed at intervals transversely are inserted into the side wall of a foundation pit, prestress anchor cables distributed at intervals longitudinally are fixedly inserted in soil among the supporting piles, the side wall of the foundation pit is provided with middle beams used for connecting the supporting piles, and the free ends of the prestress anchor cables on the same horizontal line are fixedly connected with one middle beam; grouting floral tubes are further inserted into the soil among the supporting piles, and are used for injecting grout into the soil among the supporting piles so that solidification soil can be formed. The grouting floral tubes are additionally arranged on the basis of a traditional pile anchor structure, the grout is injected into the soil among the supporting piles through the grouting floral tubes, the mechanical property of the soil among the piles can be improved, anti-collapsing and anti-sliding performance of the soil mass on the side wall of the foundation pit are improved, construction requirements are met, especially, when the supporting structure is used in a soft soil area, the reinforcing effect is obvious, meanwhile, the use quantity of the supporting piles and the anchor cables can be reduced, and engineering cost can be greatly reduced in a project with a large foundation pit area.
Description
Technical field
The present invention relates to engineering construction technology field, relate in particular to while construction for reinforcing the foundation ditch white-out piled anchor foundation pit supporting construction of soil layer steadiness around.
Background technology
In the process of excavation of foundation pit, need to be fixed the soil layer of foundation ditch periphery, to prevent that the phenomenon of caving in from appearring in foundation ditch, or there is obvious horizontal movement in the side slope of foundation ditch, thereby affect the quality of engineering and the carrying out of construction.Common a kind of white-out piled anchor foundation pit supporting construction is piled anchor structure, several fender piles around foundation ditch of planting in the soil layer around foundation ditch, the prestress anchorage cable of planting in soil layer between fender pile again, thereby make to form a metastable entirety in foundation ditch soil layer around, can effectively prevent foundation pit collapse phenomenon and occur the phenomenon of obvious displacement.
But, above-mentioned traditional piled anchor structure has the following disadvantages, the soft clay area of relatively loosening in soil property, for foundation ditch soil layer is around formed to stability entirety up to standard, only has the use number by increasing fender pile, achieve the goal with the spacing that reduces fender pile, thus, just cause the problem that increases Construction Cost; And, depend merely on fender pile and add the such supporting and protection structure of anchor cable, supporting effect in soft clay area is unsatisfactory, because of the mechanical property of its inter-pile soil too poor, the phenomenon that usually occurs fender pile to be strained by anchor cable and to slide in the soil body, can not really reach the construction requirement that foundation ditch surrounding soil is reinforced, is connected.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide up to standard, the cost-saving white-out piled anchor foundation pit supporting construction of a kind of supporting effect.
For achieving the above object, the present invention adopts following technical scheme:
White-out piled anchor foundation pit supporting construction, in foundation pit side-wall, be plugged with transversely arranged soldier pile, in the soil body between soldier pile, plant and be fixed with transversely arranged prestress anchorage cable, and prestress anchorage cable and soldier pile space arrange, and are an acute angle between the bearing of trend of prestress anchorage cable and soldier pile; On foundation pit side-wall, be furnished with at least one waist rail for connecting described soldier pile, the free end that is positioned at the prestress anchorage cable on same level line is fixedly connected on a waist rail; In the inter-pile soil of described soldier pile, be also plugged with grouting tube, grouting tube, for inject injecting cement paste in inter-pile soil, forms compacted soil.
Further, described waist rail is concrete breast beam.
Further, described injecting cement paste is cement or concrete.
Further, described prestress anchorage cable is vertical with described waist rail.
Further, the angle of described prestress anchorage cable and horizontal plane is 15 ~ 45 °.
Further, the angle of described grouting tube and horizontal plane is 15 ~ 45 °.
As mentioned above, white-out piled anchor foundation pit supporting construction of the present invention, on the basis of traditional piled anchor structure, increase grouting tube, in inter-pile soil, inject injecting cement paste by this grouting tube, can reinforce the soil body within the scope of 400 ~ 800mm around grouting tube, form compacted soil, improve the mechanical property of inter-pile soil, the enhancing foundation pit side-wall soil body is anti-collapse, non-skid property, reaches construction requirement, in soft clay area, the effect of its reinforcing can be significantly improved especially; Meanwhile, because the inter-pile soil performance after slip casting is enhanced, thereby can strengthen the spacing of soldier pile and anchor cable, reduce the consumption of soldier pile and anchor cable, in the larger engineering of foundation ditch area, apply this white-out piled anchor foundation pit supporting construction and can greatly reduce engineering cost.
Brief description of the drawings
Fig. 1 is the front view of white-out piled anchor foundation pit supporting construction of the present invention;
Fig. 2 is the side sectional view of white-out piled anchor foundation pit supporting construction of the present invention;
Fig. 3 is the top view of white-out piled anchor foundation pit supporting construction of the present invention.
Wherein: 11, foundation pit side-wall; 12, foundation ditch diapire; 21, soldier pile; 31, prestress anchorage cable; 41, waist rail; 51, grouting tube; 52, injecting cement paste.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the present invention is described further:
Refer to Fig. 1 to Fig. 3, the invention provides a kind of white-out piled anchor foundation pit supporting construction, it is in foundation pit side-wall 11, to be plugged with transversely arranged soldier pile 21, this soldier pile 21 inserts the degree of depth in the foundation ditch size depending on foundation ditch, general, the length that soldier pile 21 is positioned at the part of foundation ditch diapire below 12 is greater than it and is positioned at the length of more than 12 part of foundation ditch diapire, and this kind is designed for guarantees that soldier pile 21 can firmly be inserted on the soil body; In the soil body between soldier pile 21, plant and be fixed with transversely arranged prestress anchorage cable 31, and prestress anchorage cable 31 arranges with soldier pile 21 spaces, between the bearing of trend of prestress anchorage cable 31 and soldier pile 21, be an acute angle, this angle design has component and a component straight down horizontally outward for guaranteeing the active force that prestress anchorage cable 31 puts on the soil body of foundation pit side-wall 11, is conducive to guarantee supporting effect; On foundation pit side-wall 11, be furnished with at least one waist rail 41 for connecting described soldier pile 21, and the free end that is positioned at the prestress anchorage cable 31 on same level line is all fixedly connected on a waist rail 41; Concrete, described waist rail 41 is concrete breast beam 41, and the number of this waist rail 41 is depending on the size of foundation ditch, can be provided with many, is provided with altogether in the present embodiment two, generally the waist rail 41 that is positioned at soldier pile 41 tops is called to Guan Liang; The object of described waist rail 41 is described soldier pile 21 to be connected, and in the time that prestress anchorage cable 31 is applied to pulling force, can strengthen the support action of soldier pile 21 to foundation pit side-wall 11; Certainly, described waist rail 41 can be also reinforcement bar or steel disc, and its object is all soldier pile 21 to be connected, to strengthen its support action to foundation pit side-wall 11; In the inter-pile soil of described soldier pile 21, be also plugged with grouting tube 51, grouting tube 51, for inject injecting cement paste 52 in inter-pile soil, forms compacted soil.
Than soldier pile 21 and prestress anchorage cable 31, above-mentioned grouting tube 41 is engineering material cheaply, and this grouting tube 41 has the body of small opening for sidewall; Described injecting cement paste 52 is cement or concrete, and this injecting cement paste 52 under high pressure injects in grouting tube 41, and then small opening from it infiltrates in grouting tube 41 soil body around; The injecting cement paste 52 entering in inter-pile soil is combined, is solidified with soil around, forms compacted soil, thereby can improve the mechanical property of inter-pile soil, strengthens it and makes as a whole anti-collapse, non-skid property, and then reach the effect of reinforcing foundation pit side-wall 11 soil bodys.
Concrete, described prestress anchorage cable 31 is 15 ~ 45 ° with the angle of horizontal plane, in the time of tension prestress anchorage cable 31, can guarantee that horizontal pull and vertical pulling force that anchor cable applies foundation pit side-wall 11 are reasonably distributed, further strengthen the support action of this supporting and protection structure team foundation pit side-wall 11; Further, described prestress anchorage cable 31 and waist rail 41 mutual vertical (as shown in Figure 3), this angle design can be guaranteed to act on soldier pile 21 and maximize with the overall pulling force that waist rail 41 is linked to be, and is conducive to strengthen the stability of foundation pit side-wall 11 soil bodys.
Preferably, described grouting tube 51 is 15 ~ 45 ° with the angle of horizontal plane, it is roughly consistent or be certain low-angle (in 30 °) that this angle design can make to be formed at the trend of compacted soil around of grouting tube 51 and the trend of prestress anchorage cable 31, thereby the destruction to compacted soil can reduce anchor cable tension time, can strengthen inter-pile soil and make as a whole mechanical property.
In sum, the present invention increases grouting tube 51 on the basis of traditional piled anchor structure, in inter-pile soil, inject injecting cement paste 52 by this grouting tube 51, can reinforce the soil body within the scope of 400 ~ 800mm around grouting tube 51, form compacted soil, improve the mechanical property of inter-pile soil, enhancing foundation pit side-wall 11 soil bodys are anti-collapse, non-skid property, reach construction requirement, especially in soft clay area, consolidation effect is obvious; Simultaneously, because the inter-pile soil performance after slip casting is enhanced, thereby can strengthen the spacing of soldier pile 21 and prestress anchorage cable 31, reduce the consumption of soldier pile 21 and anchor cable 31, in the larger engineering of foundation ditch area, apply this white-out piled anchor foundation pit supporting construction and can greatly reduce engineering cost.
To one skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the claims in the present invention.
Claims (6)
1. white-out piled anchor foundation pit supporting construction, in foundation pit side-wall, be plugged with transversely arranged soldier pile, in the soil body between soldier pile, plant and be fixed with transversely arranged prestress anchorage cable, and prestress anchorage cable and soldier pile space arrange, and are an acute angle between the bearing of trend of prestress anchorage cable and soldier pile; On foundation pit side-wall, be furnished with at least one waist rail for connecting described soldier pile, the free end that is positioned at the prestress anchorage cable on same level line is fixedly connected on a waist rail; It is characterized in that: in the inter-pile soil of described soldier pile, be also plugged with grouting tube, grouting tube, for inject injecting cement paste in inter-pile soil, forms compacted soil.
2. white-out piled anchor foundation pit supporting construction as claimed in claim 1, is characterized in that: described waist rail is concrete breast beam.
3. white-out piled anchor foundation pit supporting construction as claimed in claim 1, is characterized in that: described injecting cement paste is cement paste or cement mortar.
4. white-out piled anchor foundation pit supporting construction as claimed in claim 1, is characterized in that: described prestress anchorage cable is vertical with described waist rail.
5. the white-out piled anchor foundation pit supporting construction as described in claim 1 or 4, is characterized in that: the angle of described prestress anchorage cable and horizontal plane is 15 ~ 45 °.
6. white-out piled anchor foundation pit supporting construction as claimed in claim 5, is characterized in that: the angle of described grouting tube and horizontal plane is 15 ~ 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410247914.8A CN103993604A (en) | 2014-06-05 | 2014-06-05 | Scattered piled anchor foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410247914.8A CN103993604A (en) | 2014-06-05 | 2014-06-05 | Scattered piled anchor foundation pit supporting structure |
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| CN103993604A true CN103993604A (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410247914.8A Pending CN103993604A (en) | 2014-06-05 | 2014-06-05 | Scattered piled anchor foundation pit supporting structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851522A (en) * | 2020-08-05 | 2020-10-30 | 谢珏庭 | Stable sedimentation method for foundation pit construction |
| CN111851523A (en) * | 2020-08-05 | 2020-10-30 | 谢珏庭 | Settlement deviation prevention method for foundation pit construction |
| CN113529732A (en) * | 2021-07-02 | 2021-10-22 | 广汇能源综合物流发展有限责任公司 | Circulating pipeline device for LNG gasification conversion and construction method thereof |
| CN114263156A (en) * | 2021-12-29 | 2022-04-01 | 中铁十二局集团建筑安装工程有限公司 | Construction method of deep-miscellaneous soil filling support pile |
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2014
- 2014-06-05 CN CN201410247914.8A patent/CN103993604A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851522A (en) * | 2020-08-05 | 2020-10-30 | 谢珏庭 | Stable sedimentation method for foundation pit construction |
| CN111851523A (en) * | 2020-08-05 | 2020-10-30 | 谢珏庭 | Settlement deviation prevention method for foundation pit construction |
| CN111851522B (en) * | 2020-08-05 | 2021-10-01 | 上海九丞岩土科技有限公司 | Stable sedimentation method for foundation pit construction |
| CN111851523B (en) * | 2020-08-05 | 2021-10-29 | 广东一新长城建筑集团有限公司 | Settlement deviation prevention method for foundation pit construction |
| CN113529732A (en) * | 2021-07-02 | 2021-10-22 | 广汇能源综合物流发展有限责任公司 | Circulating pipeline device for LNG gasification conversion and construction method thereof |
| CN114263156A (en) * | 2021-12-29 | 2022-04-01 | 中铁十二局集团建筑安装工程有限公司 | Construction method of deep-miscellaneous soil filling support pile |
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Application publication date: 20140820 |