CN1403660A - Composite bamboo-nail support wall for soft soil foundation pit - Google Patents
Composite bamboo-nail support wall for soft soil foundation pit Download PDFInfo
- Publication number
- CN1403660A CN1403660A CN 02138432 CN02138432A CN1403660A CN 1403660 A CN1403660 A CN 1403660A CN 02138432 CN02138432 CN 02138432 CN 02138432 A CN02138432 A CN 02138432A CN 1403660 A CN1403660 A CN 1403660A
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- China
- Prior art keywords
- soil nailing
- foundation pit
- mao bamboon
- pipe
- mao
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Abstract
The present invention is one temporary support wall structure for soft soil foundation pit. On the side slope of foundation pit, several cement mortar tubular brads are inserted, and there are mortar draining holes on the surface of the tubular brads to constitute anchor rod. The steel bar net in the concrete layer on the surface of the side slope is connected to the exposed ends of the tubular brads. The tubular brads are formed by bamboo with communicated joints and mortar draining holes on the surface. The present invention has stable side slope displacement and deposition and reliable support, and the support can ensure the safety in construction.
Description
Technical field: the composite soil nailing temporary lining wall construction that the present invention relates to a kind of soft soil foundation pit.
Background technology: the excavation slope in soft soil foundation construction is very easy to fall in, interim ruggedized construction must be arranged with retaining support, can guarantee that just construction safety carries out.Now generally construct the temporary lining wall with the compound spray anchor of pipe soil nailing technology, the pipe soil nailing is in fact all used steel pipe, because backfill again after foundation pit construction is finished, the temporary lining wall is just inoperative, a large amount of steel pipes is embedded in disposable use in the basis, the construction cost height, the metal material waste is many, does not meet environmental requirement.
Summary of the invention: at the deficiencies in the prior art, it is reliable to the invention provides a kind of supporting, and construction cost is low, reduces the soft soil foundation pit mao bamboon composite soil nailing wall of steel waste.
Soft soil foundation pit mao bamboon composite soil nailing wall of the present invention is inserted with the pipe soil nailing of many cement injection mortars in excavation slope, the surface of pipe soil nailing is provided with slurry outlet and constitutes anchor pole, the steel mesh reinforcement that is located in the layer of concrete of excavation slope surface is then fixedlyed connected with the pipe soil nailing end of exposing, the pipe soil nailing adopts the mao bamboon that has connected each joint, is provided with slurry outlet equally on the mao bamboon surface.
Adopt mao bamboon as the pipe soil nailing, because of the mao bamboon external diameter is big, surperficial ring is concavo-convex, frictional resistance is higher than steel pipe behind the cement injection mortar, the displacement of excavation slope and settlement stability, and supporting is reliable, temporary lining is longer than far away the foundation pit construction time action time, can guarantee that construction safety carries out.Mao bamboon is annual living plant, and cost is low, draws materials conveniently, saves steel, protection mineral resources, compliance with environmental protection requirements.
Further specify the present invention below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is the main structure schematic diagram of embodiment;
Fig. 2 is the pipe soil nailing structural representation of being pegged graft and being constituted by mao bamboon among the embodiment.
Embodiment: as shown in the figure, be inserted with the pipe soil nailing 1 of many cement injection mortars in excavation slope, the surface of pipe soil nailing 1 is provided with slurry outlet 2 and constitutes anchor pole.5 of steel mesh reinforcements that are located in the layer of concrete of excavation slope surface are fixedlyed connected with pipe soil nailing 1 end of exposing, and it is fixedly connected to use bundling type always.Pipe soil nailing 1 adopts the mao bamboon that has connected each joint, is provided with slurry outlet 2 equally on the surface of mao bamboon.After adopting compound spray anchor technology to construct the temporary lining wall, frictional resistance of mao bamboon and tensile strength are all higher, the mao bamboon diameter that adopts increases, the also corresponding raising of performance, and mao bamboon can keep one-year age in soft soil foundation pit, is longer than time several months that temporary lining needs far away, and is very reliable, the cost of mao bamboon probably only is 20% of a steel pipe, can greatly reduce the cost of construction.
Because the local pipe soil nailing that needs of some of excavation slope is longer, the part pipe soil nailing 1 of present embodiment is pegged graft end to end by two mao bamboons and is fixedly constituted, in two mao bamboons, be provided with a stiffener 3 that slightly exceeds overall length, the end that mao bamboon one end is with conehead 4 and stiffener 3 is connected, the stretching resistance of pipe soil nailing 1 mainly acts on the stiffener 3 like this, intensity is better, and steel mesh reinforcement 5 can also and expose the stiffener 3 ends welding of pipe soil nailing 1, improved tensile strength so more.
Claims (3)
1, a kind of soft soil foundation pit mao bamboon composite soil nailing wall, in excavation slope, be inserted with the pipe soil nailing of many cement injection mortars, the surface of pipe soil nailing is provided with slurry outlet and constitutes anchor pole, the steel mesh reinforcement that is located in the layer of concrete of excavation slope surface is then fixedlyed connected with the pipe soil nailing end of exposing, it is characterized by: pipe soil nailing (1) adopts the mao bamboon that has connected each joint, is provided with slurry outlet (2) equally on the surface of mao bamboon.
2, soft soil foundation pit mao bamboon composite soil nailing wall according to claim 1, it is characterized by: part pipe soil nailing (1) is pegged graft end to end by two mao bamboons and is fixedly constituted, be provided with a stiffener (3) that slightly exceeds overall length in two mao bamboons, the end that mao bamboon one end is with conehead (4) and stiffener (3) is connected.
3, soft soil foundation pit mao bamboon composite soil nailing wall according to claim 2 is characterized by: steel mesh reinforcement (5) and expose stiffener (3) the end welding of pipe soil nailing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138432 CN1403660A (en) | 2002-10-11 | 2002-10-11 | Composite bamboo-nail support wall for soft soil foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138432 CN1403660A (en) | 2002-10-11 | 2002-10-11 | Composite bamboo-nail support wall for soft soil foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1403660A true CN1403660A (en) | 2003-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138432 Pending CN1403660A (en) | 2002-10-11 | 2002-10-11 | Composite bamboo-nail support wall for soft soil foundation pit |
Country Status (1)
| Country | Link |
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| CN (1) | CN1403660A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235431A (en) * | 2018-10-11 | 2019-01-18 | 中南林业科技大学 | A kind of moso bamboo anchor pole and its construction method |
| CN110344422A (en) * | 2019-07-17 | 2019-10-18 | 福建第一公路工程集团有限公司 | A kind of moso bamboo soil nailing and the compound foundation pit stope support technology of prestressed anchor |
| CN111021354A (en) * | 2019-12-24 | 2020-04-17 | 南京林业大学 | Composite round bamboo used outdoors and capable of being fixed in soil and manufacturing method thereof |
| CN112049118A (en) * | 2020-08-05 | 2020-12-08 | 佛山科学技术学院 | Construction method of foundation pit supporting soil nailing wall |
-
2002
- 2002-10-11 CN CN 02138432 patent/CN1403660A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235431A (en) * | 2018-10-11 | 2019-01-18 | 中南林业科技大学 | A kind of moso bamboo anchor pole and its construction method |
| CN109235431B (en) * | 2018-10-11 | 2023-11-07 | 中南林业科技大学 | Moso bamboo anchor rod and construction method thereof |
| CN110344422A (en) * | 2019-07-17 | 2019-10-18 | 福建第一公路工程集团有限公司 | A kind of moso bamboo soil nailing and the compound foundation pit stope support technology of prestressed anchor |
| CN111021354A (en) * | 2019-12-24 | 2020-04-17 | 南京林业大学 | Composite round bamboo used outdoors and capable of being fixed in soil and manufacturing method thereof |
| CN112049118A (en) * | 2020-08-05 | 2020-12-08 | 佛山科学技术学院 | Construction method of foundation pit supporting soil nailing wall |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Xu Minglong Document name: Qualified notice of first instance |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |