CN102286983B - Split bamboo material soil nail and construction method thereof - Google Patents
Split bamboo material soil nail and construction method thereof Download PDFInfo
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- CN102286983B CN102286983B CN2011101237311A CN201110123731A CN102286983B CN 102286983 B CN102286983 B CN 102286983B CN 2011101237311 A CN2011101237311 A CN 2011101237311A CN 201110123731 A CN201110123731 A CN 201110123731A CN 102286983 B CN102286983 B CN 102286983B
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Abstract
The invention relates to a split bamboo material soil nail. The inclined and downward split bamboo material soil nail is inserted into a foundation pit side wall soil layer, the lower parts of at least two split bamboo strips are fixed with a middle bamboo tube at a certain space, lower through holes are perforated at the upper bamboo joints of the split bamboo strips, bamboo fixing pins are inserted into the lower through holes, two vertical locking bamboo strips are bound under the locking bamboo pins, cement mortar or cement slurry is filled in soil layer drill holes, protection slope concrete is divided into two layers, a bamboo strip net piece and a reinforced bamboo strip are placed on the first layer protection slope concrete, and the locking bamboo pins and the vertical locking bamboo strips are buried in the second layer protection slope concrete. When the bottom of a foundation pit is a soft and weak soil layer, downward bamboo pipe piles can be beaten into the soil layer, the middle bamboo joints of the bamboo pipe piles can be in a penetrated way and is filled with concrete for enhancing the rigidity. The split bamboo material soil nail has the advantages that the structure is unique, the construction method is simple, various cheap, environmental-protection and natural bamboo materials can be used for replacing steel bars to be used as a body structure of the deep foundation pit soil nail wall protection, the construction safety of the foundation pit is ensured, and the construction cost is reduced.
Description
Technical field:
The invention belongs to technical field of civil engineering, split agent structure and the job practices of going along with sb. to guard him as foundation pit side-wall from the soil nailing wall of bamboo wood thereof more specifically to use.
Background technology:
Along with quickening of urbanization process, modern architecture need take full advantage of the underground space, and deep foundation ditch science safety economy excavation is imperative.Deep foundation pit support is the steps necessary of excavation pit, as a temporary structure, must guarantee that safe and reliable prerequisite is issued to the target of most economical environmental protection and energy saving.Existing soil nailing wall all is to cooperate steel mesh reinforcement surface layer, cement mixing pile or timber to do composite soil nailing and advance support wall with steel pipe soil nailing or reinforcing bar soil nailing, after foundation ditch is finished mission, a large amount of reinforcing bars are embedded in underground can't the recovery, soil layer is caused permanent effect, and cause bigger waste, disagree with the environmental protection and energy saving building that country advocates.
Summary of the invention:
Purpose of the present invention is exactly the deficiency at prior art; providing a kind of splits from bamboo wood soil nailing and job practices thereof; it utilizes cheapness, environmental protection, natural 2～3 years living bamboo woods to replace reinforcing bar as the agent structure of deep foundation ditch soil-nail wall support; guarantee security of foundation ditch construction; reduce construction cost, promote the regional economy development.
Technology solution of the present invention is as follows:
Split from the bamboo wood soil nailing, comprise the bamboo trunk stake, split from bamboo bar soil nailing, slope protection concrete, insert splitting from bamboo bar soil nailing under oblique in the foundation pit side-wall soil layer, split from the bottom of bamboo bar at a certain distance fixedly centering thick bamboo tube at least two, split from the perforation down of bamboo bar top ring thorn, insert locking bamboo pin, locking bamboo pin is the vertical locking of binding bamboo bar down, and cement mortar or cement paste are filled in the soil layer boring; Slope protection concrete is divided into two-layer, and bamboo bar net sheet and reinforcement bamboo bar place on the first floor slope protection concrete, and locking bamboo pin and the vertical bamboo bar that locks are embedded in the second layer slope protection concrete.
Squeezing in the described foundation pit side-wall bottom solum fixedly has downward bamboo trunk stake, and the middle ring of bamboo trunk stake connects and be perfused with concrete.
The tail end of described bamboo trunk stake is fined away.
The described fixedly centering thick bamboo tube of splitting from bamboo bar bottom at a certain distance, centering thick bamboo tube and splitting from bamboo piece wedging between bamboo bar side.
Described splitting from the perforation down of bamboo bar top ring thorn inserted locking bamboo pin, and locking bamboo pin must be sidelong, and locking bamboo pin is bound to two vertical locking bamboo bars with iron wire or thin bamboo strips used for weaving, forms " Lv " font tapered end.
Strengthen the parallel placement of bamboo bar, fix by iron wire or thin bamboo strips used for weaving colligation with vertical locking bamboo bar and bamboo bar net sheet for described two.
Split from the job practices of bamboo wood soil nailing:
1), excavation pit, spray the first floor slope protection concrete at the side surface of foundation pit side-wall soil layer;
2), the side surface at the foundation pit side-wall soil layer forms soil layer boring, fixedly centering thick bamboo tube will be split more than two from the bottom of bamboo bar at a certain distance, the centering thick bamboo tube and split between bamboo bar side with the filling of bamboo piece, the side interspaces up and down, splits from the bamboo bar and sends in the soil layer boring and cement injection mortar or cement paste in the soil layer boring;
3), split from the boring in advance down of bamboo bar top ring thorn, insert locking bamboo pin, locking bamboo pin is fixed with the colligation of vertical locking bamboo bar;
4), bamboo bar net sheet is laid on the first floor slope protection concrete, laterally bamboo bar net sheet is sidelong, and strengthens parallel the placing on the bamboo bar net sheet of bamboo bar with two, strengthen the bamboo bar by iron wire or thin bamboo strips used for weaving with bamboo bar net sheet with vertically lock the colligation of bamboo bar and fix;
5), the tail end of bamboo trunk stake fines away, and the bamboo trunk stake is squeezed into downwards in the foundation pit side-wall bottom solum, the ring of bamboo trunk stake can connect and inside concrete perfusion;
6), at first floor slope protection concrete jet surface second layer slope protection concrete.
Beneficial effect of the present invention is:
1, the present invention adopts the bamboo wood soil nailing, utilized the high strength properties of bamboo wood, the safety requirements of bracing of foundation pit is satisfied in design and construction, after treating that the excavation of foundation pit construction is finished, bamboo wood has satisfied useful life, rots automatically, can not leave over impurity in the stratum, exploitation to future can not impact, and solved the problem that soil nailing surmounts the land used red line yet.In weak soil, clay, silt geology, split from putting into hole slip casting after the bamboo bar needs machinery or artificial boring and become soil nailing.In the east of China, southern mountain region, various bamboo groves are extensively distributing, mao bamboon is short growth period, is generally the output height 2 years, low price, the intensity height, the natural durable time can reach 24 months, can satisfy the temporary structure needs of bracing of foundation pit, therefore, adopt all woolen bamboo soil nailing to meet the requirement of national science, economy, energy-saving and environmental protection building.
2, of the present invention splitting from bamboo bar soil nailing fixed form uniqueness adds bamboo trunk stake and bamboo bar net sheet, and whole stability to foundation ditch provides safeguard.
3, the present invention constructs simply, draws materials conveniently, is easy to popularize.
Description of drawings:
Fig. 1 is structural representation of the present invention
Fig. 2 is for splitting from bamboo bar soil nailing schematic diagram
Fig. 3 is the tapered end schematic diagram
Fig. 4 is middle thick bamboo tube schematic diagram
Fig. 5 is bamboo bar net sheet schematic diagram
Among the figure: A, foundation pit side-wall soil layer; 1, bamboo trunk stake; 2, split from bamboo bar soil nailing; 21, split from the bamboo bar; 211, ring thorn; 3, slope protection concrete; 31, first floor slope protection concrete; 32, second layer slope protection concrete; 4, centering thick bamboo tube; 41, bamboo piece; 5, cement mortar or cement paste; 6, bamboo bar net sheet; 61, horizontal bamboo bar net sheet; 62, vertical bamboo bar net sheet; 7, strengthen the bamboo bar; 8, locking bamboo pin; 9, vertically lock the bamboo bar; 11, soil layer boring.
The specific embodiment:
Embodiment: see shown in Fig. 1 to 5, split from the bamboo wood soil nailing, comprise bamboo trunk stake 1, split from bamboo bar soil nailing 2, slope protection concrete 3, insert splitting from bamboo bar soil nailing 2 under oblique among the foundation pit side-wall soil layer A, split from the bottom of bamboo bar 21 at a certain distance fixedly centering thick bamboo tube 4 at least two, split from 211 times perforation of bamboo bar 21 top rings thorns, insert locking bamboo pin 8,8 times vertical lockings of binding of locking bamboo pin bamboo bar 9, cement mortar or cement paste 5 are filled in the soil layer boring 11; Slope protection concrete 3 is divided into two-layer, bamboo bar net sheet 6 and reinforcement bamboo bar 7 place on the first floor slope protection concrete 31, locking bamboo pin 8 and vertical locking bamboo bar 9 are embedded in the second layer slope protection concrete 32, bamboo bar net sheet 6 by horizontal bamboo bar net sheet 61 and vertically bamboo bar net sheet 62 constitute.
Squeezing among the described foundation pit side-wall bottom solum A fixedly has downward bamboo trunk stake 1, and the middle ring of bamboo trunk stake 1 connects and be perfused with concrete.
The tail end of described bamboo trunk stake 1 is fined away.
The described fixedly centering thick bamboo tube 4 of splitting from bamboo bar 21 bottoms at a certain distance, centering thick bamboo tube 4 and splitting from bamboo piece 41 wedgings between bamboo bar 21 sides.
Described splitting from 211 times perforation of bamboo bar 21 top ring thorns inserted locking bamboo pin 8, and locking bamboo pin 8 must be sidelong, and locking bamboo pin 8 usefulness iron wires or thin bamboo strips used for weaving are bound to two vertical locking bamboo bars 9, form " Lv " font tapered end.
Strengthen the 7 parallel placements of bamboo bar, fix by iron wire or thin bamboo strips used for weaving colligation with vertical locking bamboo bar 9 and bamboo bar net sheet 6 for described two.
Split from the job practices of bamboo wood soil nailing:
1), excavation pit, spray first floor slope protection concrete 31 at the side surface of foundation pit side-wall soil layer A;
2), the side surface at foundation pit side-wall soil layer A forms soil layer boring 11, fixedly centering thick bamboo tube 4 will be split more than 2 from the bottom of bamboo bar 21 at a certain distance, centering thick bamboo tube 4 and split between bamboo bar 21 sides with 41 fillings of bamboo piece, the side interspaces up and down, splits from bamboo bar 21 and sends in the soil layer boring 11 and cement injection mortar or cement paste 5 in the soil layer boring 11;
3), split from 211 times boring in advance of bamboo bar 21 top rings thorn, insert locking bamboo pin 8, locking bamboo pin 8 is fixed with 9 colligations of vertical locking bamboo bar;
4), bamboo bar net sheet 6 is laid on the first floor slope protection concrete 31, laterally bamboo bar net sheet 61 should be sidelong, with two reinforcement bamboo bar 7 parallel placing on the bamboo bar net sheet 61,62, strengthen bamboo bar 7 by iron wire or thin bamboo strips used for weaving and bamboo bar net sheet 6 and vertically lock 9 colligations of bamboo bar fixing;
5), the tail end of bamboo trunk stake 1 fines away, and bamboo trunk stake 1 is squeezed into downwards among the foundation pit side-wall bottom solum A, the ring of bamboo trunk stake 1 can connect and inside concrete perfusion;
6), at first floor slope protection concrete 31 jet surface second layer slope protection concretes 32.
Claims (7)
1. split from the bamboo wood soil nailing, comprise bamboo trunk stake (1), split from bamboo bar soil nailing (2), slope protection concrete (3), it is characterized in that: splitting from bamboo bar soil nailing (2) under the middle insertion of foundation pit side-wall soil layer (A) is oblique, split from the bottom of bamboo bar (21) at a certain distance fixedly centering thick bamboo tube (4) at least two, split from bamboo bar (21) top ring thorn (211) perforation down, insert locking bamboo pin (8), locking bamboo pin (8) is the vertical locking of binding bamboo bar (9) down, and cement mortar or cement paste (5) are filled in the soil layer boring (11); Slope protection concrete (3) is divided into two-layer, and bamboo bar net sheet (6) and reinforcement bamboo bar (7) place on the first floor slope protection concrete (31), and locking bamboo pin (8) and vertical locking bamboo bar (9) are embedded in the second layer slope protection concrete (32).
2. according to claim 1 splitting from the bamboo wood soil nailing, it is characterized in that: squeezing in the foundation pit side-wall bottom solum (A) fixedly has downward bamboo trunk stake (1), and the middle ring of bamboo trunk stake (1) connects and also is perfused with concrete.
3. according to claim 2 splitting from the bamboo wood soil nailing is characterized in that: the tail end sharpening of bamboo trunk stake (1).
4. according to claim 1,2 described splitting from the bamboo wood soil nailing, it is characterized in that: split from bamboo bar (21) bottom at a certain distance fixedly centering thick bamboo tube (4), centering thick bamboo tube (4) and splitting from bamboo piece (41) wedging between bamboo bar (21) side.
5. according to claim 1,2 described splitting from the bamboo wood soil nailing, it is characterized in that: split from bamboo bar (21) top ring thorn (211) perforation down, insert locking bamboo pin (8), locking bamboo pin (8) must be sidelong, locking bamboo pin (8) is bound to two vertical locking bamboo bars (9) with iron wire or thin bamboo strips used for weaving, forms " Lv " font tapered end.
6. according to claim 1,2 described splitting from the bamboo wood soil nailing, it is characterized in that: strengthen the parallel placement of bamboo bar (7), fix by iron wire or thin bamboo strips used for weaving colligation with vertical locking bamboo bar (9) and bamboo bar net sheet (6) for two.
7. split from the job practices of bamboo wood soil nailing, it is characterized in that:
1), excavation pit, spray first floor slope protection concrete (31) at the side surface of foundation pit side-wall soil layer (A);
2), the side surface at foundation pit side-wall soil layer (A) forms soil layer boring (11), fixedly centering thick bamboo tube (4) will be split more than 2 from the bottom of bamboo bar (21) at a certain distance, centering thick bamboo tube (4) and split between bamboo bar (21) side with bamboo piece (41) filling, the side interspaces up and down, splits from bamboo bar (21) and sends in the soil layer boring (11) and cement injection mortar or cement paste (5) in the soil layer boring (11);
3), split boring in advance under bamboo bar (21) the top ring thorn (211), insert locking bamboo pin (8), locking bamboo pin (8) is fixed with the colligation of vertical locking bamboo bar (9);
4), bamboo bar net sheet (6) is laid on the first floor slope protection concrete (31), laterally bamboo bar net sheet (61) is sidelong, with two parallel placing on the bamboo bar net sheet (6) of reinforcement bamboo bar (7), strengthen bamboo bar (7) by iron wire or thin bamboo strips used for weaving and bamboo bar net sheet (6) and vertically lock bamboo bar (9) colligation fixing;
5), the tail end of bamboo trunk stake (1) fines away, and bamboo trunk stake (1) is squeezed into downwards in the foundation pit side-wall bottom solum (A), the ring of bamboo trunk stake (1) can connect and inside concrete perfusion;
6), at first floor slope protection concrete (31) jet surface second layer slope protection concrete (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101237311A CN102286983B (en) | 2011-05-13 | 2011-05-13 | Split bamboo material soil nail and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101237311A CN102286983B (en) | 2011-05-13 | 2011-05-13 | Split bamboo material soil nail and construction method thereof |
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| CN102286983A CN102286983A (en) | 2011-12-21 |
| CN102286983B true CN102286983B (en) | 2013-08-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
| CN108797608B (en) * | 2018-06-21 | 2021-01-01 | 江苏地基工程有限公司 | Assembled bamboo skin foundation pit slope protection and construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137148Y (en) * | 2007-12-25 | 2008-10-22 | 杭州南方土木工程咨询有限公司 | Double rows bamboo pile composite soil nail defending system |
| CN201358466Y (en) * | 2009-02-25 | 2009-12-09 | 福建省建筑科学研究院 | Moso bamboo soil nail support wall |
| KR100956031B1 (en) * | 2009-12-03 | 2010-05-06 | 주식회사 인우에코텍 | Fixing structure for gabion mat |
| CN202073099U (en) * | 2011-05-13 | 2011-12-14 | 浙江宝业建设集团有限公司 | Split-bamboo soil nail |
-
2011
- 2011-05-13 CN CN2011101237311A patent/CN102286983B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137148Y (en) * | 2007-12-25 | 2008-10-22 | 杭州南方土木工程咨询有限公司 | Double rows bamboo pile composite soil nail defending system |
| CN201358466Y (en) * | 2009-02-25 | 2009-12-09 | 福建省建筑科学研究院 | Moso bamboo soil nail support wall |
| KR100956031B1 (en) * | 2009-12-03 | 2010-05-06 | 주식회사 인우에코텍 | Fixing structure for gabion mat |
| CN202073099U (en) * | 2011-05-13 | 2011-12-14 | 浙江宝业建设集团有限公司 | Split-bamboo soil nail |
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| CN102286983A (en) | 2011-12-21 |
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