CN1904226A - Construction method of recoverable brad wall base pit enclosure - Google Patents
Construction method of recoverable brad wall base pit enclosure Download PDFInfo
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- CN1904226A CN1904226A CN 200610029699 CN200610029699A CN1904226A CN 1904226 A CN1904226 A CN 1904226A CN 200610029699 CN200610029699 CN 200610029699 CN 200610029699 A CN200610029699 A CN 200610029699A CN 1904226 A CN1904226 A CN 1904226A
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- pit enclosure
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Abstract
This invention relates to a retrievable soil nail wall footing pit enclosure construction method which belongs to civil engineering realm. The step is as follows. Put the soil nail into the soil, and then construct the surface which connects with the soil nail, finish the soil nail wall footing pit enclosure construction. Construct the basic soleplate, and construct the exchanging support on the basic soleplate. Reclaim the soil nail from the soil. This invention can reclaim the soil nail successfully. Through the basic soleplate, the exchanging support and the surface's function, it ensures the foundation ditch's stabilization on the process of reclaiming soil nail. This can eliminate the foundation ditch circumference's distortion. Through the soil nail's reclaiming, it can eliminate the soil nail's pollution to the surrounding region. The soil nail can be reclaimed, the protection environment ability is good, it saves the resource and largely lowers foundation ditch enclosure construction cost
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to the brad wall base pit enclosure job practices.
Background technology
Existing brad wall base pit enclosure job practices mainly adopts the soil nailing of constructing in the soil body, the steel concrete surface layer that is connected with soil nailing in the place's construction of excavation face reaches the bracing of foundation pit purpose by soil nailing and the acting in conjunction of steel concrete surface layer then.The brad wall base pit enclosure method has in China Engineering Construction Standardization Association's standard " foundation pit soil nailing tecnical regulations " (CECS 96:97) comparatively comprehensively to be introduced, in current bracing of foundation pit engineering field, the brad wall base pit enclosure method is comparatively economical than other foundation pit enclosure method (adding support etc. as cement mixing method gravity dam, fender post).But there is following shortcoming in the brad wall base pit enclosure method of using at present: first, use this technology in the soil body, to construct than long soil nailing to the foundation ditch periphery along the foundation ditch periphery, the soil nailing length of using in the engineering is generally 6～15m at present, the distance of at present a lot of bracing of foundation pit engineering excavation identity distance land used red lines is not because of satisfying the requirement of soil nailing extension, and can not use the low brad wall base pit enclosure form of cost, make the bracing of foundation pit engineering cost very high; The second, the soil nailing that uses in the brad wall base pit enclosure can not reclaim at present, produces a lot of underground solid obstacles, and environmental-protecting performance is poor, has a strong impact on the foundation ditch underground space development in periphery later stage.Because above shortcoming makes the brad wall base pit enclosure method be very restricted in application in engineering.
The content of invention
The object of the present invention is to provide a kind of construction method of recoverable brad wall base pit enclosure, this kind construction method of recoverable brad wall base pit enclosure can reclaim the soil nailing in the brad wall base pit enclosure smoothly, eliminate the pollution of soil nailing to the foundation ditch surrounding enviroment, soil nailing can utilize again, and the bracing of foundation pit engineering cost is reduced greatly.
Above-mentioned purpose of the present invention is to realize by following a kind of construction method of recoverable brad wall base pit enclosure, comprises the steps:
A) soil nailing is placed the soil body, finish the brad wall base pit enclosure construction;
B) construction sole plate, and the support replacement of on sole plate, constructing;
C) soil nailing is reclaimed from the soil body.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, the soil nailing wall of above-mentioned steps described in a) can be composite soil nailing wall.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, above-mentioned steps b) support replacement described in can be arranged along the sole plate peripheral intervals.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, above-mentioned steps b) support replacement described in can be the reinforced concrete structure that firmly is connected with sole plate.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, above-mentioned steps b) support replacement described in can be the steel work that firmly is connected with sole plate.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, the soil nailing of above-mentioned steps described in a) can be to insert steel pipe, reinforcing bar or other elongate rod materials and the reinforcement body that forms in the soil body.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, the soil nailing of above-mentioned steps described in a) can be to insert steel pipe, reinforcing bar or other elongate rod materials and slip casting and the reinforcement body that forms in the soil body.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, the soil nailing of above-mentioned steps described in a) can be to hole in the soil body, inserts steel pipe, reinforcing bar or other elongate rod materials and slip casting then and the reinforcement body that forms.
In above-mentioned a kind of construction method of recoverable brad wall base pit enclosure, the soil nailing of above-mentioned steps described in a) can be to make cement mixing method in the soil body, inserts steel pipe, reinforcing bar or other elongate rod materials then and the reinforcement body that forms.
Because a kind of construction method of recoverable brad wall base pit enclosure of the present invention can be finished soil nailing smoothly and reclaim, guaranteed the stable of foundation ditch in the soil nailing removal process, can eliminate the distortion that soil nailing reclaims the foundation ditch periphery that may cause, support replacement is connected with sole plate, can make full use of the effect of sole plate, the support replacement easy construction, the support replacement steady quality is reliable, construction period is short, reclaims by soil nailing, can eliminate the pollution of soil nailing to the foundation ditch surrounding area, soil nailing is recycling, so good environmental protection economizes on resources, and makes the bracing of foundation pit engineering cost reduce greatly.
Description of drawings
Fig. 1 is the embodiment phase I sectional drawing of expression a kind of construction method of recoverable brad wall base pit enclosure of the present invention;
Fig. 2 is the embodiment second stage sectional drawing of expression a kind of construction method of recoverable brad wall base pit enclosure of the present invention;
Fig. 3 is the embodiment phase III sectional drawing of expression a kind of construction method of recoverable brad wall base pit enclosure of the present invention;
Fig. 4 is the embodiment layout schematic diagram of expression a kind of construction method of recoverable brad wall base pit enclosure of the present invention.
The specific embodiment
As embodiment of a kind of construction method of recoverable brad wall base pit enclosure of the present invention, in the phase I shown in Figure 1, according to construction of soil-nailed wall method commonly used at present, stage excavation foundation ditch and construction in layer soil nailing 1 and surface layer 2, the construction of finishing brad wall base pit enclosure is (when bracing of foundation pit need carry out the interim retaining soil of water proof or excavation, can be at the peripheral construction of excavation face water seal curtain 5 as shown in Figure 1 before excavation of foundation pit, water seal curtain 5 can adopt continuous cement mixing method to make, thereby form composite soil nailing wall), promptly finish a kind of construction method of recoverable brad wall base pit enclosure embodiment phase I of the present invention, after this enter enforcement embodiment second stage as shown in Figure 2, construction sole plate 3, and construction and sole plate 3 and the surface layer 2 firm support replacements 4 that are connected, support replacement 4 can be the reinforced concrete structure of pouring into a mould simultaneously with sole plate 3, also can be by on sole plate 3, steel component being set, adopt the steel work that firmly is connected with sole plate 3 then, support replacement 4 can adopt spaced apart in the plane form as shown in Figure 4, after sole plate 3 is finished with support replacement 4 constructions through concrete curing time, can come into effect the phase III of the present invention as shown in Figure 3, applying external force on soil nailing 1 extracts soil nailing 1 from the soil body, utilize surface layer 2, support replacement 4 continues the foundation ditch of excavation is gone along with sb. to guard him with sole plate 3 actings in conjunction, can reach the purpose that soil nailing 1 reclaims, finish a kind of construction method of recoverable brad wall base pit enclosure of the present invention.
Claims (9)
1. construction method of recoverable brad wall base pit enclosure, this construction method of recoverable brad wall base pit enclosure comprises the steps:
A) soil nailing is placed the soil body, finish the brad wall base pit enclosure construction;
B) construction sole plate, and the support replacement of on sole plate, constructing;
C) soil nailing is reclaimed from the soil body.
2. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1 is characterized in that the soil nailing wall described in above-mentioned steps a) can be a composite soil nailing wall.
3. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1 is characterized in that above-mentioned steps b) described in support replacement can arrange along the sole plate peripheral intervals.
4. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1 is characterized in that above-mentioned steps b) described in support replacement can be the reinforced concrete structure that firmly is connected with sole plate.
5. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1 is characterized in that above-mentioned steps b) described in support replacement can be the steel work that firmly is connected with sole plate.
6. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1 is characterized in that the soil nailing described in above-mentioned steps a) can be to insert steel pipe, reinforcing bar or other elongate rod materials and the reinforcement body that forms in the soil body.
7. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1 is characterized in that the soil nailing described in above-mentioned steps a) can be to insert steel pipe, reinforcing bar or other elongate rod materials and slip casting and the reinforcement body that forms in the soil body.
8. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1, it is characterized in that the soil nailing described in above-mentioned steps a) can be to hole in the soil body, insert steel pipe, reinforcing bar or other elongate rod materials and slip casting then and the reinforcement body that forms.
9. a kind of construction method of recoverable brad wall base pit enclosure according to claim 1, it is characterized in that the soil nailing described in above-mentioned steps a) can be to make cement mixing method in the soil body, insert steel pipe, reinforcing bar or other elongate rod materials then and the reinforcement body that forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610029699 CN1904226A (en) | 2006-08-03 | 2006-08-03 | Construction method of recoverable brad wall base pit enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610029699 CN1904226A (en) | 2006-08-03 | 2006-08-03 | Construction method of recoverable brad wall base pit enclosure |
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| Publication Number | Publication Date |
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| CN1904226A true CN1904226A (en) | 2007-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610029699 Pending CN1904226A (en) | 2006-08-03 | 2006-08-03 | Construction method of recoverable brad wall base pit enclosure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002953A (en) * | 2010-12-02 | 2011-04-06 | 上海市第四建筑有限公司 | Method for changing support of foundation pit enclosing rib plates |
| CN102031555A (en) * | 2010-10-13 | 2011-04-27 | 广东省基础工程公司 | Construction method for clearing away waste soil nails and anchor rods in soil by utilizing electrolytic corrosion technology |
| CN102116027A (en) * | 2010-12-17 | 2011-07-06 | 上海市第四建筑有限公司 | Frame type combined support-replacing system and construction method thereof |
| CN104631467A (en) * | 2015-03-11 | 2015-05-20 | 中国建筑第八工程局有限公司 | Method for erecting L-shaped support replacement plate for foundation pit excavation project |
| CN108505516A (en) * | 2018-04-17 | 2018-09-07 | 嘉兴同浙建设工程检测有限公司 | The construction method of self-balancing grouting under pressure steel tube for soil-nail |
-
2006
- 2006-08-03 CN CN 200610029699 patent/CN1904226A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031555A (en) * | 2010-10-13 | 2011-04-27 | 广东省基础工程公司 | Construction method for clearing away waste soil nails and anchor rods in soil by utilizing electrolytic corrosion technology |
| CN102031555B (en) * | 2010-10-13 | 2012-10-03 | 广东省基础工程公司 | Construction method for clearing away waste soil nails and anchor rods in soil by utilizing electrolytic corrosion technology |
| CN102002953A (en) * | 2010-12-02 | 2011-04-06 | 上海市第四建筑有限公司 | Method for changing support of foundation pit enclosing rib plates |
| CN102116027A (en) * | 2010-12-17 | 2011-07-06 | 上海市第四建筑有限公司 | Frame type combined support-replacing system and construction method thereof |
| CN104631467A (en) * | 2015-03-11 | 2015-05-20 | 中国建筑第八工程局有限公司 | Method for erecting L-shaped support replacement plate for foundation pit excavation project |
| CN108505516A (en) * | 2018-04-17 | 2018-09-07 | 嘉兴同浙建设工程检测有限公司 | The construction method of self-balancing grouting under pressure steel tube for soil-nail |
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Open date: 20070131 |