CN205259194U - Supporting structure of foundation pit - Google Patents
Supporting structure of foundation pit Download PDFInfo
- Publication number
- CN205259194U CN205259194U CN201521079293.3U CN201521079293U CN205259194U CN 205259194 U CN205259194 U CN 205259194U CN 201521079293 U CN201521079293 U CN 201521079293U CN 205259194 U CN205259194 U CN 205259194U
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- cement mixing
- mixing method
- concrete pile
- prestressed
- foundation pit
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Abstract
The utility model discloses a supporting structure of foundation pit, including seepproof screen and foundation ditch, be provided with continuous cement mixing method between seepproof screen and the foundation ditch, prestressed concrete pile and H shaped steel have been inserted to the interval in the cement mixing method, and the cement mixing method rear side corresponds prestressed concrete pile department and is provided with the stock, and the stock passes in cement mixing method and prestressed concrete pile extend to the seepproof screen, and the stock arranges for the slope and the cement mixing method rear side is fixed in through the ground tackle in its rear end. This novel structural design is reasonable, and the construction is simple and convenient, save material, and construction cycle is short, saves engineering cost, be difficult to take place the fracture breakoff phenomenon, avoid taking place the condition that the foundation ditch seeped water, leaked, increase impervious reliability, lateral stiffness is big, and bending resistance is strong, and the load is reliable, and the atress is functional, and the degree of safety is high.
Description
Technical field
The utility model relates to a kind of Base hole supporting technology field, specifically a kind of foundation pit supporting construction.
Background technology
Along with the paces of Urbanization in China are accelerated, the exploitation of the underground space obtain fast development, and foundation depth is also more and more darker, thus deep basal pit go along with sb. to guard him also development thereupon of design and construction technique.
Foundation pit supporting construction, as a kind of temporary structure, utilizes the cycle short, and cost is high, how to accelerate speed of application, and reducing supporting construction cost is the emphasis that people pay close attention to always. Be combined water-stop curtain, the stake of SMW engineering method compares with traditional cast-in-situ bored pile, and it is fast that water-seal pile/insert within the walls prefabricated tubular pile has speed of application, better economy, and mud-less pollution, the later stage such as exempts to pull out at the feature, but has certain defect simultaneously. As: water-seal pile interpolation pipe pile spacing is fixed value (being generally the integral multiple of water-seal pile stake heart distance), if adopt lateral rigidity deficiency of minor diameter pile tube, interpolation large-diameter tubular pile economic benefit is not obvious and cause the attenuation of the effective sealing thickness of soil cement, and easily cracking seeps water; Water-seal pile interpolation pile tube, between stake and stake, spacing is large, causes soil cement water-stop curtain shearing strength deficiency. Therefore in base pit engineering, be difficult at present promote the use on a large scale.
Utility model content
The purpose of this utility model is to provide a kind of foundation pit supporting construction, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of foundation pit supporting construction, comprise seepproof screen and foundation ditch, between described seepproof screen and foundation ditch, be provided with continuous cement mixing method, in described cement mixing method, interval is inserted with prestressed-concrete pile and H shaped steel, the corresponding prestressed-concrete pile of described cement mixing method rear side place is provided with anchor pole, described anchor pole extends in seepproof screen through cement mixing method and prestressed-concrete pile, and described anchor pole is for being in tilted layout and cement mixing method rear side is fixed on by ground tackle in its rear end; Described prestressed-concrete pile comprises prestressed-concrete pile body, in described prestressed-concrete pile body, be provided with circular duct, the left and right sides in described circular duct is symmetrically arranged with many nonprestressed reinforcements, the front and back bilateral symmetry in described circular duct is provided with rectangle hoop, is provided with many deformed bars in described rectangle hoop; The periphery of described rectangle hoop and nonprestressed reinforcement is provided with overall stirrup.
As further program of the utility model: described seepproof screen is single shaft cement mixing method, multi-shaft cement mixing pile, biting connecions high-pressure rotary jet grouting pile, soil cement bored concrete pile or the stake of TRD engineering method.
As further scheme of the utility model: the outward flange minimum range of described prestressed-concrete pile and H shaped steel outward flange and cement mixing method is all not less than 25mm.
As further scheme of the utility model: the perpendicularity of described prestressed-concrete pile in inserting cement mixing method with H shaped steel should be consistent with cement-soil stirring pile construction perpendicularity.
As further scheme of the utility model: described anchor pole inclination angle is 20 °-25 °.
Compared with prior art, the beneficial effects of the utility model are: when construction, only continuous cement mixing method need be set between seepproof screen and foundation ditch, before producing intensity, cement mixing method inserts prestressed-concrete pile and H shaped steel, easy construction, saving material, and the prestressed-concrete pile in the utility model is prefabricated components, can shorten on-the-spot man-hour, work progress is simple, and short construction period is saved construction costs; Deformed bar is set, is not easy to occur cracking destruction phenomenon; Prestressed-concrete pile inserts after cement mixing method without taking-up, easy construction and effective; Cement mixing method is inserted H shaped steel and prestressed-concrete pile, make the anti-side rigidity of entirety large, bending resistance is strong, reduce the stake heart distance of prestressed-concrete pile, increase the shearing strength of cement mixing method between prestressed-concrete pile, avoid cement mixing method destroyed by shearing force, the situation of foundation ditch infiltration occurs, leaking, increases impervious reliability; Ground tackle and anchor pole are set, further improve the bulk strength of this mechanism, make its load reliable, stress performance is good, and degree of safety is high.
In sum, this new structure is reasonable in design, and easy construction is saved material, and short construction period is saved construction costs; Be not easy to occur cracking destruction phenomenon, avoid the situation that foundation ditch seeps water, leaks occurs, increase impervious reliability; Anti-side rigidity is large, and bending resistance is strong, and load is reliable, and stress performance is good, and degree of safety is high.
Brief description of the drawings
Fig. 1 is the structural representation of foundation pit supporting construction.
Fig. 2 is the structural representation of the prestressed-concrete pile in foundation pit supporting construction.
In figure: 1-seepproof screen, 2-cement mixing method, 3-foundation ditch, 4-prestressed-concrete pile, 41-prestressed-concrete pile body, 42-nonprestressed reinforcement, the circular duct of 43-, 44-deformed bar, 45-rectangle hoop, 46-entirety stirrup, 5-H shaped steel, 6-ground tackle, 7-anchor pole.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-2, a kind of foundation pit supporting construction, comprise seepproof screen 1 and foundation ditch 3, between described seepproof screen 1 and foundation ditch 3, be provided with continuous cement mixing method 2, the interior interval of described cement mixing method 2 is inserted with prestressed-concrete pile 4 and H shaped steel 5, the corresponding prestressed-concrete pile of described cement mixing method 2 rear sides 4 places are provided with anchor pole 7, described anchor pole 7 extends in seepproof screen 1 through cement mixing method 2 and prestressed-concrete pile 4, and described anchor pole 7 is for being in tilted layout and cement mixing method 2 rear sides are fixed on by ground tackle 6 in its rear end; Described prestressed-concrete pile 4 comprises prestressed-concrete pile body 41, in described prestressed-concrete pile body 41, be provided with circular duct 43, the left and right sides in described circular duct 43 is symmetrically arranged with many nonprestressed reinforcements 42, the front and back bilateral symmetry in described circular duct 43 is provided with rectangle hoop 45, in described rectangle hoop 45, is provided with many deformed bars 44; The periphery of described rectangle hoop 45 and nonprestressed reinforcement 42 is provided with overall stirrup 46.
Operation principle of the present utility model is: when construction, only need between seepproof screen 1 and foundation ditch 3, continuous cement mixing method 2 be set, before producing intensity, inserts cement mixing method 2 prestressed-concrete pile 4 and H shaped steel 5, easy construction, saving material, prestressed-concrete pile 4 in the utility model is prefabricated components, can shorten on-the-spot man-hour, and work progress is simple, short construction period, saves construction costs; Deformed bar 44 is set, is not easy to occur cracking destruction phenomenon; Prestressed-concrete pile 4 inserts after cement mixing method 2 without taking-up, easy construction and effective; Cement mixing method 2 is inserted H shaped steel 5 and prestressed-concrete pile 4, make the anti-side rigidity of entirety large, bending resistance is strong, reduce the stake heart distance of prestressed-concrete pile 4, increase the shearing strength of cement mixing method 2 between prestressed-concrete pile 4, avoid cement mixing method 2 destroyed by shearing force, the situation of foundation ditch infiltration occurs, leaking, increases impervious reliability; Ground tackle 6 and anchor pole 7 are set, further improve the bulk strength of this mechanism, make its load reliable, stress performance is good, and degree of safety is high.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form. Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the utility model. Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (5)
1. a foundation pit supporting construction, comprise seepproof screen and foundation ditch, it is characterized in that, between described seepproof screen and foundation ditch, be provided with continuous cement mixing method, in described cement mixing method, interval is inserted with prestressed-concrete pile and H shaped steel, the corresponding prestressed-concrete pile of described cement mixing method rear side place is provided with anchor pole, described anchor pole extends in seepproof screen through cement mixing method and prestressed-concrete pile, and described anchor pole is for being in tilted layout and cement mixing method rear side is fixed on by ground tackle in its rear end; Described prestressed-concrete pile comprises prestressed-concrete pile body, in described prestressed-concrete pile body, be provided with circular duct, the left and right sides in described circular duct is symmetrically arranged with many nonprestressed reinforcements, the front and back bilateral symmetry in described circular duct is provided with rectangle hoop, is provided with many deformed bars in described rectangle hoop; The periphery of described rectangle hoop and nonprestressed reinforcement is provided with overall stirrup.
2. foundation pit supporting construction according to claim 1, is characterized in that, described seepproof screen is single shaft cement mixing method, multi-shaft cement mixing pile, biting connecions high-pressure rotary jet grouting pile, soil cement bored concrete pile or the stake of TRD engineering method.
3. foundation pit supporting construction according to claim 1, is characterized in that, the outward flange minimum range of described prestressed-concrete pile and H shaped steel outward flange and cement mixing method is all not less than 25mm.
4. foundation pit supporting construction according to claim 1, is characterized in that, described prestressed-concrete pile should be consistent with cement-soil stirring pile construction perpendicularity with the perpendicularity in H shaped steel insertion cement mixing method.
5. foundation pit supporting construction according to claim 1, is characterized in that, described anchor pole inclination angle is 20 °-25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521079293.3U CN205259194U (en) | 2015-12-23 | 2015-12-23 | Supporting structure of foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521079293.3U CN205259194U (en) | 2015-12-23 | 2015-12-23 | Supporting structure of foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205259194U true CN205259194U (en) | 2016-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521079293.3U Expired - Fee Related CN205259194U (en) | 2015-12-23 | 2015-12-23 | Supporting structure of foundation pit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205259194U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677192A (en) * | 2017-03-03 | 2017-05-17 | 周同和 | Row pile anchoring cement soil pile continuous wall supporting structure and construction process thereof |
| CN107165173A (en) * | 2017-07-18 | 2017-09-15 | 中冶华天南京工程技术有限公司 | A kind of foundation pit supporting system and its construction method |
-
2015
- 2015-12-23 CN CN201521079293.3U patent/CN205259194U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677192A (en) * | 2017-03-03 | 2017-05-17 | 周同和 | Row pile anchoring cement soil pile continuous wall supporting structure and construction process thereof |
| CN107165173A (en) * | 2017-07-18 | 2017-09-15 | 中冶华天南京工程技术有限公司 | A kind of foundation pit supporting system and its construction method |
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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: 20160525 Termination date: 20211223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |