CN103397661A - Construction technology of underground combined profile steel-concrete outer wall structure - Google Patents
Construction technology of underground combined profile steel-concrete outer wall structure Download PDFInfo
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- CN103397661A CN103397661A CN2013103463250A CN201310346325A CN103397661A CN 103397661 A CN103397661 A CN 103397661A CN 2013103463250 A CN2013103463250 A CN 2013103463250A CN 201310346325 A CN201310346325 A CN 201310346325A CN 103397661 A CN103397661 A CN 103397661A
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Abstract
The invention discloses a construction technology of an underground combined profile steel-concrete outer wall structure and belongs to the technical field of underground engineering of buildings. The underground combined profile steel-concrete outer wall structure comprises a profile steel framework and shearing connection components which are fixed on the profile steel framework. The profile steel formwork in a temporary enclosure wall based on the SWM construction method and concrete of an after-poured underground concrete outer wall are connected through the construction technology of the underground combined profile steel-concrete outer wall structure to form a permanent underground combined outer wall structural system, the process of recovering profile steel is eliminated, and the strength and the rigidity of the temporary enclosure structure are improved.
Description
Technical field
The present invention relates to build the 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, the construction of large-scale basement in high rise building, underground store and large-scale municipal engineering 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, the foundation ditch place is compact, foundation ditch surrounding enviroment complicated responsive (as closing on a large amount of pipelines, building and subway structure) etc., to equal the challenging property problem of the theoretical research of deep-foundation pit engineering, design and construction, and become a large technical barrier of current builing industry.
In deep-foundation pit engineering, conventional temporary support structures is comprised 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 assurance of retaining wall.Usually adopt at present diaphragm wall, piles in row, steel sheet pile, SMW engineering method 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; Anchor pole or spray anchor, concrete support and steel support level and the vertical supporting as foundation ditch.
For embedding darker underground structure, adopt conventional temporary lining method to have 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 less of temporary support structures, the distortion of supporting and protection structure and the soil body is larger; The inner support of conventional method needs to remove, and has wasted a large amount of human and material resources and social resources; In the temporary supporting demolishing process, the secondary loading of space enclosing structure and secondary deformation also will cause further impact to environment in various degree.
In SMW engineering method retaining wall, the shaped steel one-tenth combination wall skeleton that insert at interval, although construction at present finishes recoverable afterwards, but recovery cost is higher, in removal process the distortion of member is larger, and the recycling rate of waterused after actual recovered is lower, thereby has wasted section steel material.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of coupling together with rear cast underground concrete exterior wall concrete in the interim retaining wall of SWM engineering method, form permanent " two wall unifications " underground combined exterior wall structural system, cancelled the recovery process of shaped steel, the construction technology of combined exterior wall under the shaped steel-concrete ground of the strength and stiffness of the interim space enclosing structure of raising.
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 the interim retaining wall of SWM engineering method and rear cast underground concrete exterior wall concrete are coupled together, form and permanently descend combined exterior wall structural system; Comprise the following steps: intensity and the rigidity requirement of step 1, the described interim retaining wall of foundation, calculate the described type steel skeleton consumption in SMW engineering method body of wall, determine intensity, cross-sectional sizes and the configuration mode of described type steel skeleton; Step 2, according to intensity and the rigidity requirement of the described underground concrete exterior wall of operational phase, the thickness of the described underground concrete exterior wall of designing and calculating and shear the connecting elements consumption, intensity and the rigidity requirement of the permanent combined exterior wall body that is connected to form with the described underground concrete exterior wall of guaranteeing described type steel skeleton and after-pouring; Step 3, described type steel skeleton is inserted in described interim retaining wall; After step 4, every layer of soil excavation engineering finish, described shearing connecting elements is fixed on to described type steel skeleton; Step 5, treat that the ground floor engineering finishes after, from bottom, start to configure the concrete exterior wall reinforcing bar from bottom to top, make outer wall template, and build exterior wall concrete, to complete described type steel skeleton, with described concrete of basement exterior wall, be combined the combined exterior wall structural system that forms.
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 is added stifled attaching nut's mouth temporarily; Step 33, when construction SMW engineering method retaining wall, by this type steel skeleton with the attaching nut, be inserted in interim retaining wall; Step 34, the adding stifled thing in attaching nut's mouth is taken out; After step 35, every layer of soil excavation engineering finish, by shearing peg, tighten in the attaching nut on every stratotype steel frame surface, until underground bottom, to complete all, shear being connected of pegs and type steel skeleton.
Further, described step 4 comprises: step 41, peg is sheared in single welding on the steel plate bar, and the size of described shearing peg and spacing are taken as size and the design pitch of shearing peg on type steel skeleton; Step 42, when construction SMW engineering method retaining wall, type steel skeleton is inserted in interim retaining wall; After step 43, every layer of soil excavation engineering finish, by being welded with the steel plate bar of shearing peg, be welded on every stratotype steel frame surface, until underground bottom, the connection construction technique of shearing peg and type steel skeleton to complete all.
Under shaped steel-concrete ground provided by the invention, the construction technology of combined exterior wall couples together the type steel skeleton in the interim retaining wall of SWM engineering method and rear cast underground concrete exterior wall concrete, form and permanently descend combined exterior wall structural system, realized " two wall unifications ", type steel skeleton is applied in the underground concrete exterior wall, cancel the recovery process of type steel skeleton, under the effect of type steel skeleton, improved the interim strength and stiffness of safeguarding body of wall.
The 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 bar 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.
The specific embodiment
The embodiment of the present invention provides the construction technology of combined exterior wall under a kind of shaped steel-concrete ground, type steel skeleton 1 in the interim retaining wall of SWM engineering method 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: intensity and the rigidity requirement of step 1, the interim retaining wall of foundation, calculate type steel skeleton 1 consumption in SMW engineering method body of wall, determine intensity, cross-sectional sizes and the configuration mode of type steel skeleton 1; Step 2, according to intensity and the rigidity requirement of operational phase underground concrete exterior wall 7, the thickness of designing and calculating underground concrete exterior wall 7 and shear the connecting elements consumption, intensity and the rigidity requirement of the permanent combined exterior wall body that is connected to form with the underground concrete exterior wall 7 of guaranteeing type steel skeleton 1 and after-pouring; Step 3, type steel skeleton 1 is inserted in interim retaining wall; After step 4, every layer of soil excavation engineering finish, will shear connecting elements and be fixed on type steel skeleton 1; Step 5, after treating that the ground floor engineering finishes, from bottom, start to configure concrete exterior wall reinforcing bar 8 from bottom to top, make outer wall template, and build exterior wall concrete, with finishing type steel frame 1 and the combined exterior wall structural system of described concrete of basement exterior wall 7 in conjunction with formation.Shear connecting elements for shearing peg 2.
Performing step 4 can 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 is added 3 mouthfuls of stifled attaching nuts temporarily; Step 33, when construction SMW engineering method retaining wall, this type steel skeleton with attaching nut 31, by design appointment requirement, is inserted in interim retaining wall; Step 34, the adding stifled thing in attaching nut's mouth is taken out; After step 35, every layer of soil excavation engineering finish, by shearing peg 2, tighten in the attaching nut 3 on every stratotype steel frame 1 surface, until underground bottom, to complete all, shear being connected of pegs 2 and type steel skeleton 1.
The step of the second technical scheme is as follows: step 41, making steel plate bar 4, and namely peg 2 is sheared in single welding on steel plate bar 4, and size and the spacing of on steel plate bar 4, shearing peg 2 are taken as size and the design pitch of shearing peg 2 on type steel skeleton 1; Step 42, when construction SMW engineering method retaining wall, type steel skeleton 1 is inserted in interim retaining wall; After step 43, every layer of soil excavation engineering finish, by being welded with the steel plate bar 4 of shearing peg 2, by designing requirement, be welded on every stratotype steel frame 1 surface, until underground bottom, the connection construction technique of shearing peg 2 and type steel skeleton 1 to complete all.
Referring to Fig. 1-2, the concrete operations mode of technical scheme one is as follows:
(1) at first according to intensity and the rigidity requirement of interim retaining wall, calculate type steel skeleton 1 consumption in SMW engineering method body of wall, determine intensity, cross-sectional sizes and the configuration mode of type steel skeleton 1.Skeleton using this type steel skeleton 1 as assembled wall, intensity and rigidity requirement according to the operational phase underground external wall, the thickness of designing and calculating concrete exterior wall 13 is sheared peg 2 consumptions with shearing to be connected, intensity and the rigidity requirement of the permanent combined exterior wall body that is connected to form with the concrete exterior wall 13 of guaranteeing shaped steel 1 and after-pouring;
(2) according to designing requirement, in factory's blanking, intend being inserted in the type steel skeleton 1 in the interim retaining wall of SMW engineering method;
(3) at the surperficial unwrapping wire mark of type steel skeleton 1, shear peg 2 positions;
(4) on mark peg 2 positions, the attaching nut 3 of peg 2 is sheared in welding, and adds 3 mouthfuls of stifled attaching nuts, in case in work progress, the foreign material such as soil property enter in 3 mouthfuls, nut;
(5) press the interim retaining wall of SMW engineering method construction, and will by design pitch, insert in the interim retaining wall of SMW engineering method with attaching nut 3 shaped steel 1;
(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 3 mouthfuls of attaching nuts on welding and shaped steel 1 edge of a wing adds stifled thing temporarily, to turn the screw cap 5 of shearing on peg 2 with the shearing peg 2 of screw 6 passing through from top to down, will shear peg 2 and tighten in 3 mouthfuls of attaching nuts;
(9) by the sequence of construction of above-mentioned the 7th step with the 8th step, carry out the underground soil excavation engineering of lower one deck, horizontal support is set, connects and shear peg 2, until the bottom, finishing type steel frame 1 and the connection construction technique of shearing peg 2;
(10) ground floor under construction ground;
(11) inboard by designing requirement configuration underground concrete exterior wall reinforcing bar 8 at the interim retaining wall of bottom, outer wall template is set, and pours into a mould exterior wall concrete;
(12) circulate from bottom to top the 11st the step, complete the underground combined exterior wall structure of every stratotype steel-concrete.
Referring to Fig. 3-4, the concrete operations mode of technical scheme two is as follows:
(1) at first according to intensity and the rigidity requirement of interim retaining wall, calculate type steel skeleton 1 consumption in SMW engineering method body of wall, determine intensity, cross-sectional sizes and the configuration mode of type steel skeleton 1.Skeleton using this type steel skeleton 1 as assembled wall, intensity and rigidity requirement according to the operational phase underground external wall, the thickness of designing and calculating concrete exterior wall 13 is connected peg 2 consumptions with shearing, intensity and the rigidity requirement of the permanent combined exterior wall body that is connected to form with the concrete exterior wall 13 of guaranteeing type steel skeleton 1 and after-pouring;
(2) according to the type steel skeleton 1 of designing requirement in factory's blanking is inserted in SMW engineering method retaining wall;
(3) at the special band of factory, shear the steel plate bar 4 of peg 2, peg 2 is sheared in single welding on steel plate bar 4, and the spacing of shearing peg 2 on steel plate bar 4 is taken as the design pitch of type steel skeleton 1 peg;
(4) press 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, 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 bar 4 of shearing peg 2 by designing requirement;
(8) by the sequence of construction of above-mentioned the 6th step with the 7th step, carry out the underground soil excavation engineering of lower one deck, horizontal support is set, welds with the special steel plate bar 4 of shearing peg 2, until the bottom, finishing type steel frame 1 and the connection construction technique of shearing peg 2;
(9) ground floor under construction ground;
(10) inboard by designing requirement configuration underground concrete exterior wall reinforcing bar 14 at the interim retaining wall of bottom, outer wall template is set, and pours into a mould exterior wall concrete;
(11) circulate from bottom to top the 10th the step, complete the underground combined exterior wall structure of every stratotype steel-concrete.
Under shaped steel-concrete ground of the present invention, the construction technology of combined exterior wall has utilized the shearing peg that the type steel skeleton in the interim retaining wall of SMW engineering method and rear cast underground concrete exterior wall are coupled together, form and permanently descend combined exterior wall structural system, realize novel " two wall unifications " underground combined exterior wall structural system of safeguarding that temporarily body of wall combines with the underground concrete exterior wall, save exterior wall concrete and amount of reinforcement; Directly the type steel skeleton in the interim retaining wall of SMW engineering method is applied in underground combined exterior wall structure, cancelled the recovery process of shaped steel, save and reclaim operating expenses, avoided simultaneously in the removal process due to the excessive and discarded waste of material that causes of the distortion of shaped steel; Type steel skeleton is not only as interim retaining wall skeleton, also an ingredient of underground combined exterior wall body simultaneously, thereby during the interim retaining wall of designing and calculating, can consider the action effect of this shaped steel in underground engineering construction stage and building operational phase as a whole, reducing to greatest extent construction costs is prerequisite, in interim retaining wall, can suitably increase the shaped steel amount, to improve the strength and stiffness of interim space enclosing structure; The attaching nut is welded on and intends being inserted on the shaped steel of retaining wall in factory, or at the special steel plate bar that is welded with peg of factory, at the construction field (site) each and every one peg is tightened in the attaching nut, or will directly be welded on shaped steel with the special steel plate bar of peg, to realize type steel skeleton and to shear being connected of peg, greatly improve efficiency of construction, guarantee the connection construction quality.
It should be noted last that, the above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. the construction technology of combined exterior wall structure under a shaped steel-concrete ground, couple together the type steel skeleton (1) in the interim retaining wall of SWM engineering method and rear cast underground concrete exterior wall (7) concrete, forms and permanently descend combined exterior wall structural system; It is characterized in that, comprise the following steps: intensity and the rigidity requirement of step 1, the described interim retaining wall of foundation, calculate described type steel skeleton (1) consumption in SMW engineering method body of wall, determine intensity, cross-sectional sizes and the configuration mode of described type steel skeleton (1); Step 2, according to intensity and the rigidity requirement of the described underground concrete exterior wall of operational phase (7), the thickness of the described underground concrete exterior wall of designing and calculating (7) and shear the connecting elements consumption, intensity and the rigidity requirement of the permanent combined exterior wall body that is connected to form with the described underground concrete exterior wall (7) of guaranteeing described type steel skeleton (1) and after-pouring; Step 3, described type steel skeleton (1) is inserted in described interim retaining wall; After step 4, every layer of soil excavation engineering finish, described shearing connecting elements is fixed on to described type steel skeleton (1); Step 5, treat that the ground floor engineering finishes after, from bottom, start to configure concrete exterior wall reinforcing bar (8) from bottom to top, make outer wall template, and build exterior wall concrete, to complete described type steel skeleton (1) and the combined exterior wall structural system of described concrete of basement exterior wall (7) in conjunction with formation.
2. construction technology according to claim 1 is characterized in that: described shearing connecting elements is for shearing peg (2).
3. construction technology according to claim 2, it is characterized in that: 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) mouthful temporarily; Step 33, when construction SMW engineering method retaining wall, the type steel skeleton (1) that will be somebody's turn to do with attaching nut (3) is inserted in interim retaining wall; Step 34, the adding stifled thing in attaching nut (3) mouthful is taken out; After step 35, every layer of soil excavation engineering finish, will shear peg (2) and tighten in the attaching nut (3) on every stratotype steel frame (1) surface, until underground bottom, to complete being connected of all shearing pegs (2) and type steel skeleton (1).
4. construction technology according to claim 2, it is characterized in that: described step 4 comprises: step 41, in the upper single welding of steel plate bar (4), shear peg (2), the size of described shearing peg (2) and spacing are taken as upper size and the design pitch of shearing peg of type steel skeleton (1); Step 42, when construction SMW engineering method retaining wall, type steel skeleton (1) is inserted in interim retaining wall; After step 43, every layer of soil excavation engineering finish, to be welded with the steel plate bar (4) of shearing peg (2) and be welded on every stratotype steel frame (1) surface, until underground bottom, the connection construction technique of shearing peg (2) and type steel skeleton (1) to complete all.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2019136856A1 (en) * | 2018-01-12 | 2019-07-18 | 上海勘察设计研究院(集团)有限公司 | Supporting structure and construction method therefor, and superimposed pile wall doubling as supporting structure |
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| 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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2013
- 2013-08-09 CN CN201310346325.0A patent/CN103397661B/en not_active Expired - Fee Related
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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2019136856A1 (en) * | 2018-01-12 | 2019-07-18 | 上海勘察设计研究院(集团)有限公司 | Supporting structure and construction method therefor, and superimposed pile wall doubling as supporting structure |
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