CN103397661B - The construction technology of combined exterior wall structure under shaped steel-concrete ground - Google Patents
The construction technology of combined exterior wall structure under shaped steel-concrete ground Download PDFInfo
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- CN103397661B CN103397661B CN201310346325.0A CN201310346325A CN103397661B CN 103397661 B CN103397661 B CN 103397661B CN 201310346325 A CN201310346325 A CN 201310346325A CN 103397661 B CN103397661 B CN 103397661B
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Abstract
The invention discloses the construction technology of combined exterior wall structure under a kind of shaped steel-concrete ground, belong to building underground construction technical field.Under described shaped steel-concrete ground, combined exterior wall structure comprises type steel skeleton and shears connecting elements; Shear connecting elements to be fixed on type steel skeleton.Under shaped steel-concrete ground of the present invention, the type steel skeleton in interim for SWM engineering method retaining wall and rear cast underground concrete exterior wall concrete couple together by the construction technology of combined exterior wall, form and permanently descend combined exterior wall structural system, eliminate the recovery process of shaped steel, improve the strength and stiffness of interim space enclosing structure.
Description
Technical field
The present invention relates to building underground construction technical field, particularly the construction technology of combined exterior wall under a kind of shaped steel-concrete ground.
Background technology
Along with the high speed development of China's economic construction, construction and the large-scale municipal engineering of large-scale basement in high rise building, underground store all face deep-foundation pit engineering.Main manifestations is that the scale of foundation ditch is large, the cutting depth of foundation ditch is large, foundation ditch place is compact, foundation ditch surrounding enviroment complicated responsive (as closing on a large amount of pipeline, building and subway structure) etc., the theoretical research of deep-foundation pit engineering, design and construction are all challenged sex chromosome mosaicism, and has become a large technical barrier of current builing industry.
In deep-foundation pit engineering, conventional temporary support structures is made up of retaining wall, water-stop curtain, horizontal inner support and vertical supporting system, and wherein retaining wall is the key of base pit engineering, and support system is the guarantee of retaining wall.Usually diaphragm wall, piles in row, steel sheet pile, SMW engineering method is adopted to go along with sb. to guard him retaining wall, cement mixing method retaining wall and soil nailing etc. as the interim space enclosing structure of surrounding at present; Anchor pole or spray anchor, concrete support and bracing members are as the level of foundation ditch and vertical supporting.
For embedding darker underground structure, conventional temporary lining method is adopted to there are problems.Buried depth as deep-foundation pit engineering supporting and protection structure is very large, and the inner support consumption of foundation ditch is large; The rigidity of temporary support structures is relatively little, and the distortion of supporting and protection structure and the soil body is larger; The inner support of conventional method needs to remove, and wastes a large amount of human and material resources and social resources; In temporary support demolishing process the secondary loading of space enclosing structure and secondary deformation also by various degree further impact is caused on environment.
In SMW engineering method retaining wall, the shaped steel that interval is inserted becomes combination wall skeleton, recoverable after terminating of constructing although current, but recovery cost is higher, in removal process, the distortion of component is comparatively large, and the recycling rate of waterused after actual recovered is lower, thus wastes section steel material.
Summary of the invention
Technical problem to be solved by this invention is to provide one and couples together in interim for SWM engineering method retaining wall with rear cast underground concrete exterior wall concrete, form permanent " Two walls unite as one " underground combined exterior wall structural system, eliminate the recovery process of shaped steel, improve the construction technology of combined exterior wall under the shaped steel-concrete ground of the strength and stiffness of interim space enclosing structure.
For solving the problems of the technologies described above, the invention provides the construction technology of combined exterior wall under a kind of shaped steel-concrete ground, type steel skeleton in interim for SWM engineering method retaining wall and rear cast underground concrete exterior wall concrete are coupled together, forms and permanently descend combined exterior wall structural system; Comprise the following steps: step 1, according to the intensity of described interim retaining wall and rigidity requirement, calculate the described type steel skeleton consumption in SMW engineering method body of wall, determine the intensity of described type steel skeleton, cross-sectional sizes and configuration mode; The intensity of underground concrete exterior wall described in step 2, foundation operational phase and rigidity requirement, the thickness of underground concrete exterior wall described in designing and calculating and shearing connecting elements consumption, to guarantee intensity and the rigidity requirement of the permanent combined exterior wall body that the described underground concrete exterior wall of described type steel skeleton and after-pouring is connected to form; Step 3, described type steel skeleton is inserted in described interim retaining wall; After step 4, every layer of soil excavation engineering terminate, described shearing connecting elements is fixed on described type steel skeleton; Step 5, treat that ground floor engineering terminates after, from bottom, configure concrete exterior wall reinforcing bar from bottom to top, make outer wall template, and build exterior wall concrete, to complete the combined exterior wall structural system that described type steel skeleton and described concrete of basement exterior wall are bonded.
Further, described shearing connecting elements is for shearing peg.
Further, described step 4 comprises: step 31, on described type steel skeleton, be welded to connect nut; Step 32, adds stifled attaching nut's mouth temporarily; Step 33, when constructing SMW engineering method retaining wall, by this type steel skeleton with attaching nut, be inserted in interim retaining wall; Step 34, the stifled thing that adds in attaching nut's mouth to be taken out; After step 35, every layer of soil excavation engineering terminate, shearing peg is tightened in the attaching nut on every stratotype steel frame surface, until subsurface formation, to complete the connection of all shearing pegs and type steel skeleton.
Further, described step 4 comprises: step 41, single welding shearing peg in steel plate strip, and the size of described shearing peg and spacing are taken as the size and design pitch of type steel skeleton being sheared peg; Step 42, construct SMW engineering method retaining wall time, type steel skeleton is inserted in interim retaining wall; After step 43, every layer of soil excavation engineering terminate, be welded on every stratotype steel frame surface, until subsurface formation, to complete the connection construction technique of all shearing pegs and type steel skeleton by being welded with the steel plate strip shearing peg.
Under shaped steel-concrete ground provided by the invention, the type steel skeleton in interim for SWM engineering method retaining wall and rear cast underground concrete exterior wall concrete couple together by the construction technology of combined exterior wall, form and permanently descend combined exterior wall structural system, achieve " Two walls unite as one ", type steel skeleton is applied in underground concrete exterior wall, eliminate the recovery process of type steel skeleton, under the effect of type steel skeleton, improve the strength and stiffness of extraordinary maintenance body of wall.
Accompanying drawing explanation
Under shaped steel-concrete ground that Fig. 1 provides for the embodiment of the present invention, the shearing peg of the construction technology of combined exterior wall is by attaching nut and type steel skeleton syndeton schematic diagram;
Fig. 2 is the type steel skeleton of Fig. 1 and the structural representation of underground concrete exterior wall;
Under shaped steel-concrete ground that Fig. 3 provides for the embodiment of the present invention, the shearing peg of the construction technology of combined exterior wall is by steel plate strip and type steel skeleton syndeton schematic diagram;
Fig. 4 is the type steel skeleton of Fig. 3 and the structural representation of underground concrete exterior wall.
Detailed description of the invention
Embodiments provide the construction technology of combined exterior wall under a kind of shaped steel-concrete ground, type steel skeleton 1 in interim for SWM engineering method retaining wall is coupled together with rear cast underground concrete exterior wall 7 concrete, forming permanently descends the concrete grammar of combined exterior wall structural system to comprise the following steps: step 1, according to the intensity of interim retaining wall and rigidity requirement, calculate type steel skeleton 1 consumption in SMW engineering method body of wall, the intensity of deterministic type steel frame 1, cross-sectional sizes and configuration mode; The intensity of step 2, foundation operational phase underground concrete exterior wall 7 and rigidity requirement, the thickness of designing and calculating underground concrete exterior wall 7 and shearing connecting elements consumption, to guarantee intensity and the rigidity requirement of the permanent combined exterior wall body that type steel skeleton 1 is connected to form with the underground concrete exterior wall 7 of after-pouring; Step 3, type steel skeleton 1 is inserted in interim retaining wall; After step 4, every layer of soil excavation engineering terminate, shearing connecting elements is fixed on type steel skeleton 1; Step 5, after treating that ground floor engineering terminates, from bottom, configure concrete exterior wall reinforcing bar 8 from bottom to top, make outer wall template, and build exterior wall concrete, the combined exterior wall structural system be bonded with finishing type steel frame 1 and described concrete of basement exterior wall 7.Shear connecting elements for shearing peg 2.
Realize step 4 to be realized by two kinds of technical schemes.
The step of the first technical scheme is as follows: step 31, on type steel skeleton 1, be welded to connect nut 3; Step 32, adds stifled attaching nut 3 mouthfuls temporarily; Step 33, construct SMW engineering method retaining wall time, by this with attaching nut 3 type steel skeleton 1 by design appointment requirement, be inserted in interim retaining wall; Step 34, the stifled thing that adds in attaching nut's mouth to be taken out; After step 35, every layer of soil excavation engineering terminate, shearing peg 2 is tightened in the attaching nut 3 on every stratotype steel frame 1 surface, until subsurface formation, to complete the connection of all shearing pegs 2 and type steel skeleton 1.
The step of the second technical scheme is as follows: step 41, making steel plate strip 4, and namely in steel plate strip 4, peg 2 is sheared in single welding, and size and the spacing of steel plate strip 4 being sheared peg 2 are taken as the size and design pitch of type steel skeleton 1 being sheared peg 2; Step 42, construct SMW engineering method retaining wall time, type steel skeleton 1 is inserted in interim retaining wall; After step 43, every layer of soil excavation engineering terminate, be welded on every stratotype steel frame 1 surface by being welded with the steel plate strip 4 shearing peg 2 by designing requirement, until subsurface formation, to complete the connection construction technique of all shearing pegs 2 and type steel skeleton 1.
See Fig. 1-2, the concrete operations mode of technical scheme one is as follows:
(1) first according to intensity and the rigidity requirement of interim retaining wall, type steel skeleton 1 consumption in SMW engineering method body of wall is calculated, the intensity of deterministic type steel frame 1, cross-sectional sizes and configuration mode.Using the skeleton of this type steel skeleton 1 as assembled wall, according to intensity and the rigidity requirement of operational phase underground external wall, the thickness of designing and calculating concrete exterior wall 13 is connected with shearing shears peg 2 consumption, to guarantee intensity and the rigidity requirement of the permanent combined exterior wall body that shaped steel 1 is connected to form with the concrete exterior wall 13 of after-pouring;
(2) intend in factory's blanking the type steel skeleton 1 that is inserted in the interim retaining wall of SMW engineering method according to designing requirement;
(3) peg 2 position is sheared at the surperficial unwrapping wire mark of type steel skeleton 1;
(4) mark welding on peg 2 position and shear the attaching nut 3 of peg 2, and add stifled attaching nut 3 mouthfuls, in case the foreign material such as soil property enter in 3 mouthfuls, nut in work progress;
(5) to construct interim retaining wall by SMW engineering method, and the shaped steel 1 with attaching nut 3 is inserted in the interim retaining wall of SMW engineering method by design pitch;
(6) by the vertical supporting of the inner space enclosing structure of specified design requirement construction;
(7) construction B1 soil excavation engineering, and the horizontal support of retaining wall is set;
(8) cleaning is by type steel skeleton 1 surface in the retaining wall of excavation position, that takes out the attaching nut 3 mouthfuls on welding and shaped steel 1 edge of a wing adds stifled thing temporarily, by the shearing peg 2 with screw 6 from top to down by turning the screw cap 5 sheared on peg 2, shearing peg 2 is tightened in attaching nut 3 mouthfuls;
(9) by the sequence of construction of above-mentioned 7th step and the 8th step, carry out lower one deck underground soil excavation engineering, horizontal support is set, connect and shear peg 2, until the bottom, finishing type steel frame 1 and the connection construction technique shearing peg 2;
(10) construction subsurface formation ground;
(11) inside the interim retaining wall of bottom, configure underground concrete exterior wall reinforcing bar 8 by designing requirement, outer wall template is set, and pours into a mould exterior wall concrete;
(12) circulate the 11st step from bottom to top, completes every stratotype steel-concrete underground combined exterior wall structure.
See Fig. 3-4, the concrete operations mode of technical scheme two is as follows:
(1) first according to intensity and the rigidity requirement of interim retaining wall, type steel skeleton 1 consumption in SMW engineering method body of wall is calculated, the intensity of deterministic type steel frame 1, cross-sectional sizes and configuration mode.Using the skeleton of this type steel skeleton 1 as assembled wall, according to intensity and the rigidity requirement of operational phase underground external wall, the thickness of designing and calculating concrete exterior wall 13 is connected peg 2 consumption with shearing, to guarantee intensity and the rigidity requirement of the permanent combined exterior wall body that type steel skeleton 1 is connected to form with the concrete exterior wall 13 of after-pouring;
(2) to be inserted in the type steel skeleton 1 in SMW engineering method retaining wall in factory's blanking according to designing requirement;
(3) shear the steel plate strip 4 of peg 2 at the special band of factory, in steel plate strip 4, peg 2 is sheared in single welding, and spacing steel plate strip 4 being sheared peg 2 is taken as the design pitch of type steel skeleton 1 peg;
(4) by SMW engineering method construction retaining wall, and type steel skeleton 1 is inserted in SMW engineering method retaining wall according to appointment model and design pitch;
(5) by the vertical supporting of the inner space enclosing structure of specified design requirement construction;
(6) construction B1 soil excavation engineering, and the horizontal support of retaining wall is set;
(7) cleaning is by type steel skeleton 1 surface in the retaining wall of excavation position, is welded on every stratotype steel frame 1 surface by being welded with the special steel plate strip 4 shearing peg 2 by designing requirement;
(8) by the sequence of construction of above-mentioned 6th step and the 7th step, carrying out lower one deck underground soil excavation engineering, horizontal support is set, welding special steel plate strip 4 with shearing peg 2, until the bottom, finishing type steel frame 1 and the connection construction technique shearing peg 2;
(9) construction subsurface formation ground;
(10) inside the interim retaining wall of bottom, configure underground concrete exterior wall reinforcing bar 14 by designing requirement, outer wall template is set, and pours into a mould exterior wall concrete;
(11) circulate the 10th step from bottom to top, completes every stratotype steel-concrete underground combined exterior wall structure.
Under shaped steel-concrete ground of the present invention the construction technology of combined exterior wall make use of shear peg the type steel skeleton in interim for SMW engineering method retaining wall and rear cast underground concrete exterior wall are coupled together, form and permanently descend combined exterior wall structural system, realize novel " Two walls unite as one " underground combined exterior wall structural system that extraordinary maintenance body of wall combines with underground concrete exterior wall, save exterior wall concrete and amount of reinforcement; Directly the type steel skeleton in interim for SMW engineering method retaining wall is applied in the combined exterior wall structure of underground, eliminate the recovery process of shaped steel, save and reclaim operating expenses, avoid the waste of material caused because the distortion of shaped steel is excessive and discarded in removal process simultaneously; Type steel skeleton is not only as interim retaining wall skeleton, also be an ingredient of underground combined exterior wall body simultaneously, thus during the interim retaining wall of designing and calculating, this shaped steel can be considered as a whole at underground engineering construction stage and the action effect building operational phase, reduce to greatest extent premised on construction costs, shaped steel amount can be suitably increased, to improve the strength and stiffness of interim space enclosing structure in interim retaining wall; Attaching nut is welded in factory and intends being inserted on the shaped steel of retaining wall, or in the special steel plate strip being welded with peg of factory, at the construction field (site) each and every one peg is tightened in attaching nut, or the special steel plate strip with peg is directly welded on shaped steel, to realize type steel skeleton and the connection of shearing peg, greatly improve efficiency of construction, ensure connection construction quality.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. the construction technology of combined exterior wall structure under shaped steel-concrete ground, type steel skeleton (1) in interim for SWM engineering method retaining wall and rear cast underground concrete exterior wall (7) concrete are coupled together, forms and permanently descend combined exterior wall structural system; It is characterized in that, comprise the following steps: step 1, according to the intensity of described interim retaining wall and rigidity requirement, calculate described type steel skeleton (1) consumption in SMW engineering method body of wall, determine the intensity of described type steel skeleton (1), cross-sectional sizes and configuration mode; The intensity of underground concrete exterior wall (7) described in step 2, foundation operational phase and rigidity requirement, the thickness of underground concrete exterior wall (7) described in designing and calculating and shearing connecting elements consumption, to guarantee intensity and the rigidity requirement of the permanent combined exterior wall body that described type steel skeleton (1) is connected to form with the described underground concrete exterior wall (7) of after-pouring; Step 3, according to designing requirement, described type steel skeleton (1) is inserted in the interim retaining wall of described SMW engineering method; After step 4, every layer of soil excavation engineering terminate, described shearing connecting elements is fixed on described type steel skeleton (1), described shearing connecting elements is for shearing peg (2), and described step 4 comprises: step 31, on described type steel skeleton (1), be welded to connect nut (3); Step 32, add stifled attaching nut (3) mouth temporarily; Step 33, construct SMW engineering method retaining wall time, the type steel skeleton (1) be somebody's turn to do with attaching nut (3) is inserted in interim retaining wall; Step 34, the stifled thing that adds in attaching nut (3) mouth to be taken out; After step 35, every layer of soil excavation engineering terminate, to shear peg (2) is tightened in the attaching nut (3) on every stratotype steel frame (1) surface, until subsurface formation, to complete the connection of all shearing pegs (2) and type steel skeleton (1); Step 5, treat that ground floor engineering terminates after, from bottom, configure concrete exterior wall reinforcing bar (8) from bottom to top, make outer wall template, and build exterior wall concrete, to complete the combined exterior wall structural system that described type steel skeleton (1) and described concrete of basement exterior wall (7) are bonded.
2. construction technology according to claim 1, it is characterized in that: described step 4 comprises: step 41, single welding shearing peg (2) in steel plate strip (4), the size of described shearing peg (2) and spacing are taken as upper size and the design pitch shearing peg of type steel skeleton (1); Step 42, construct SMW engineering method retaining wall time, type steel skeleton (1) is inserted in interim retaining wall; After step 43, every layer of soil excavation engineering terminate, every stratotype steel frame (1) surface is welded on by being welded with the steel plate strip (4) shearing peg (2), until subsurface formation, to complete the connection construction technique of all shearing pegs (2) and type steel skeleton (1).
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| CN103643681B (en) * | 2013-11-29 | 2015-09-02 | 中铁隧道勘测设计院有限公司 | A kind of Metro station excavation is inverse makes supporting and protection structure and construction method thereof |
| CN106049458A (en) * | 2016-05-31 | 2016-10-26 | 余巍 | Underground diaphragm wall structure and construction method thereof |
| CN108071118A (en) * | 2018-01-12 | 2018-05-25 | 上海岩土工程勘察设计研究院有限公司 | A kind of supporting construction and its construction method and the overlapping piling wall for also serving as supporting construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000042263A2 (en) * | 1999-01-13 | 2000-07-20 | Won Kee Hong | Composite retaining wall and construction method for underground structure |
| KR100633013B1 (en) * | 2005-05-06 | 2006-10-12 | 주식회사 스마텍엔지니어링 | Pile for retaining wall having connector bolt, connection structure and method of retaining wall |
| KR20080001711A (en) * | 2006-06-29 | 2008-01-04 | 충주대학교 산학협력단 | The construction method of retaining wall |
| CN101117800A (en) * | 2007-08-22 | 2008-02-06 | 浙江大学 | Method for one-pile-three-use in underground engineering |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000042263A2 (en) * | 1999-01-13 | 2000-07-20 | Won Kee Hong | Composite retaining wall and construction method for underground structure |
| KR100633013B1 (en) * | 2005-05-06 | 2006-10-12 | 주식회사 스마텍엔지니어링 | Pile for retaining wall having connector bolt, connection structure and method of retaining wall |
| KR20080001711A (en) * | 2006-06-29 | 2008-01-04 | 충주대학교 산학협력단 | The construction method of retaining wall |
| CN101117800A (en) * | 2007-08-22 | 2008-02-06 | 浙江大学 | Method for one-pile-three-use in underground engineering |
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