CN204849781U - Lay prevention of seepage geomembrane perpendicularly and press excavation supporting system of irritating stake and combining together with superfluidity - Google Patents
Lay prevention of seepage geomembrane perpendicularly and press excavation supporting system of irritating stake and combining together with superfluidity Download PDFInfo
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- CN204849781U CN204849781U CN201520580132.6U CN201520580132U CN204849781U CN 204849781 U CN204849781 U CN 204849781U CN 201520580132 U CN201520580132 U CN 201520580132U CN 204849781 U CN204849781 U CN 204849781U
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- superfluidity
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- seepage geomembrane
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- excavation supporting
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Abstract
The utility model relates to an excavation supporting technical field discloses a lay prevention of seepage geomembrane perpendicularly and press excavation supporting system of irritating stake and combining together with superfluidity, is provided with stagnant water curtain (2) on the lateral wall of foundation ditch, the inboard of stagnant water curtain (2) is provided with fender pile (1), the top of propping up fender pile (1) is provided with collar tie beam (3), interior support (4) fixed connection of collar tie beam (3) and foundation ditch top, stagnant water curtain (2) prevention of seepage geomembrane for laying along the vertical direction, prop up fender pile (1) and irritate the stake for the superfluidity pressure. The utility model discloses an excavation supporting system have the osmosis membrane sealing effect of preventing good, press irritate that the nos mud of stake pollutes, the cost is hanged down, time limit for a project weak point, green, safe and reliable characteristics.
Description
Technical field
The utility model relates to Base hole supporting technology field, and particularly relate to the foundation pit support system that a kind of vertical laying anti-seepage geomembrane combines with superfluidity guncreting pile, this support system is applicable to Soft Deep Foundation Pit supporting or other retaining support.
Background technology
The developed areas such as China's Yangtze River Delta, annual for the expense in bracing of foundation pit up to more than hundred billion yuan, the soil-baffling structure adopted in current China bracing of foundation pit mainly contains the methods such as agitation pile water-stop curtain+castinplace pile, agitation pile water-stop curtain+pile tube, castinplace pile, the stake of SMW engineering method.Wherein the supporting of agitation pile gravity dam has that cement consumption is high, cost is high, speed of application is slow, be out of shape the features such as large, affects larger by construction quality; Reinforced concrete circular fender post has reinforcing bar and concrete amount is large, about has the reinforcing bar of 1/3 to can not get abundant application, and construction exists mud contamination, and cost is high, and curing period is long, and speed of application is slow; There is Shaped steel recovery difficulty in the stake of SMW engineering method, cost affects by the duration and is usually difficult to comparatively greatly control.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of and has that stagnant water effect is good, speed of application is fast, cost is low and be out of shape little foundation pit support system.
In order to solve the problems of the technologies described above, the utility model provides the foundation pit support system that a kind of vertical laying anti-seepage geomembrane combines with superfluidity guncreting pile, the feature of this foundation pit support system is, the sidewall of foundation ditch is provided with water-stop curtain, the inner side of described water-stop curtain is provided with soldier pile, the top of described soldier pile is provided with collar tie beam, and described collar tie beam is fixedly connected with the bracing frame above foundation ditch; Described water-stop curtain is the anti-seepage geomembrane vertically laid, and described soldier pile is superfluidity guncreting pile.
The sidewall of foundation ditch is also provided with fluting vertically, described anti-seepage geomembrane is inserted in fluting, and anti-seepage geomembrane backfills groove after implanting.
Described anti-seepage geomembrane is density polyethylene film with high.
Described superfluidity guncreting pile is the Superfluid state concrete stake of drilling & grouting piling, and described Superfluid state concrete stake is built-in with reinforcing cage.
The length of described superfluidity guncreting pile is greater than the cutting depth of foundation ditch.
Described collar tie beam is reinforced concrete circle beam.
Compared with prior art, the utility model has the following advantages:
(1) adopt the vertical anti-seepage geomembrane laid as water-stop curtain, replace conventional soil cement agitation pile as water-stop curtain, have environmental protection, pollution-free soil, stagnant water effect are good;
(2) superfluidity guncreting pile such as has a speed of application soon, soil compaction, mud-less pollution, cost is not low at the feature, reliable construction quality, without expanding, undergauge etc.
Accompanying drawing explanation
Fig. 1: the schematic diagram of the utility model foundation pit support system.
In figure: 1. superfluidity guncreting pile; 2. vertically lay antiseepage film; 3. collar tie beam; 4. diaphragm seal; 5. support.
Detailed description of the invention
Further the utility model is described in detail below by embodiment, but the utility model is not only confined to following examples.
As shown in Figure 1, adopt the foundation pit support system that the anti-seepage geomembrane of vertical laying and superfluidity guncreting pile combine, the sidewall of foundation ditch is provided with water-stop curtain 2, the inner side of water-stop curtain 2 is provided with soldier pile 1, the top of soldier pile 1 is provided with collar tie beam 3, collar tie beam 3 is fixedly connected with the inner support 4 above foundation ditch, and water-stop curtain 2 is the anti-seepage geomembrane vertically laid, and soldier pile 1 is superfluidity guncreting pile.The geomembrane of vertical laying, as foundation pit waterproof curtain 2, prevents excavation of foundation pit underground water towards foundation ditch internal penetration; The superfluidity guncreting pile 1 of excavation free face as vertical soil-baffling structure, and with collar tie beam, support and be connected, the lateral earth pressure after shared excavation of foundation pit.In specific embodiment, the cutting depth of foundation ditch is 7m.
Adopt groover vertically to slot on the sidewall of foundation ditch, adopt slurry strengthened wall in groove, after grooving, lay anti-seepage geomembrane, spread rear mud ditch and adopted the backfill of clay ball.In specific embodiment, anti-seepage geomembrane selects thickness to be the density polyethylene film with high (HDPE film) of 0.2mm, tensile strength>=14MPa, elongation at break>=400%, water permeability coefficient≤1.0 × 10
-12cm/s.Density polyethylene film with high is a kind of environment-friendly materials of nontoxic, tasteless, odorless, there are good heat resistance and cold resistance, there is chemical stability good, there is higher rigidity and toughness, anti-aging strong with decay resistance, mechanical tensile strength is good, has good dielectric properties, environmental stress cracking resistance is better, is the good barrier material of a kind of anti-seepage effect.
Superfluidity guncreting pile 2, employing be special spiral drilling machine, hole to projected depth, Bian Tibian pressure fill with Superfluid state concrete, bore propose after, in Superfluid state concrete, be pressed into reinforcing cage, a pile.In specific embodiment, employing be φ 700 superfluidity guncreting pile, the long 16m of stake.
In specific embodiment, stake top employing 1000 × 800 reinforced concrete circle beam 3 of soldier pile 1, improves soldier pile globality, and reduces soldier pile horizontal movement by inner support 4.
Claims (5)
1. the foundation pit support system vertically laid anti-seepage geomembrane and combine with superfluidity guncreting pile, it is characterized in that: the sidewall of foundation ditch is provided with water-stop curtain (2), the inner side of described water-stop curtain (2) is provided with soldier pile (1), the top of described soldier pile (1) is provided with collar tie beam (3), and described collar tie beam (3) is fixedly connected with the bracing frame (4) above foundation ditch; Described water-stop curtain (2) is the anti-seepage geomembrane vertically laid, and described soldier pile (1) is superfluidity guncreting pile.
2. foundation pit support system according to claim 1, is characterized in that: described anti-seepage geomembrane is density polyethylene film with high.
3. foundation pit support system according to claim 1, is characterized in that: described superfluidity guncreting pile is the Superfluid state concrete stake of drilling & grouting piling, and described Superfluid state concrete stake is built-in with reinforcing cage.
4. the foundation pit support system according to claim 1 or 3, is characterized in that: the length of described superfluidity guncreting pile is greater than the cutting depth of foundation ditch.
5. foundation pit support system according to claim 1, is characterized in that: described collar tie beam (3) is reinforced concrete circle beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580132.6U CN204849781U (en) | 2015-08-05 | 2015-08-05 | Lay prevention of seepage geomembrane perpendicularly and press excavation supporting system of irritating stake and combining together with superfluidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580132.6U CN204849781U (en) | 2015-08-05 | 2015-08-05 | Lay prevention of seepage geomembrane perpendicularly and press excavation supporting system of irritating stake and combining together with superfluidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204849781U true CN204849781U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520580132.6U Expired - Fee Related CN204849781U (en) | 2015-08-05 | 2015-08-05 | Lay prevention of seepage geomembrane perpendicularly and press excavation supporting system of irritating stake and combining together with superfluidity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893424A (en) * | 2017-12-10 | 2018-04-10 | 成都隶盈科技有限公司 | A kind of construction method of the vertical water sealing structure of hydraulic engineering |
| CN109083203A (en) * | 2018-10-09 | 2018-12-25 | 北京高能时代环境技术股份有限公司 | A kind of vertical laying method of HDPE film |
| CN109680724A (en) * | 2018-12-20 | 2019-04-26 | 中国矿业大学(北京) | It is lauched water-separating film sealing device and its construction method on a large scale |
| CN111962518A (en) * | 2020-08-13 | 2020-11-20 | 广州创易岩土工程有限公司 | Underground vertical anti-seepage film and construction method |
| CN112554166A (en) * | 2020-12-03 | 2021-03-26 | 天津大学 | Deep-layer stirring composite wall based on HDPE (high-density polyethylene) membrane and construction method |
-
2015
- 2015-08-05 CN CN201520580132.6U patent/CN204849781U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893424A (en) * | 2017-12-10 | 2018-04-10 | 成都隶盈科技有限公司 | A kind of construction method of the vertical water sealing structure of hydraulic engineering |
| CN107893424B (en) * | 2017-12-10 | 2020-04-21 | 宁波市水利水电规划设计研究院有限公司 | Construction method of vertical water stop structure of hydraulic engineering |
| CN109083203A (en) * | 2018-10-09 | 2018-12-25 | 北京高能时代环境技术股份有限公司 | A kind of vertical laying method of HDPE film |
| CN109083203B (en) * | 2018-10-09 | 2020-11-24 | 北京高能时代环境技术股份有限公司 | Vertical laying method for HDPE (high-density polyethylene) film |
| CN109680724A (en) * | 2018-12-20 | 2019-04-26 | 中国矿业大学(北京) | It is lauched water-separating film sealing device and its construction method on a large scale |
| CN109680724B (en) * | 2018-12-20 | 2020-11-27 | 中国矿业大学(北京) | Large-range underground water-proof film sealing device and construction method thereof |
| CN111962518A (en) * | 2020-08-13 | 2020-11-20 | 广州创易岩土工程有限公司 | Underground vertical anti-seepage film and construction method |
| CN112554166A (en) * | 2020-12-03 | 2021-03-26 | 天津大学 | Deep-layer stirring composite wall based on HDPE (high-density polyethylene) membrane and 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: 20151209 Termination date: 20210805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |