CN104404963B - A kind of subway transfer station deep basal pit crossed construction method - Google Patents

A kind of subway transfer station deep basal pit crossed construction method Download PDF

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Publication number
CN104404963B
CN104404963B CN201410535708.7A CN201410535708A CN104404963B CN 104404963 B CN104404963 B CN 104404963B CN 201410535708 A CN201410535708 A CN 201410535708A CN 104404963 B CN104404963 B CN 104404963B
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China
Prior art keywords
standard paragraphs
node
foundation pit
enclosure structure
pit enclosure
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CN201410535708.7A
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CN104404963A (en
Inventor
柴艳飞
任富芝
安文河
徐利
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China Construction Sixth Engineering Division Co Ltd
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China Construction Sixth Engineering Division Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/04Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof

Abstract

The invention discloses a kind of subway transfer station deep basal pit crossed construction method, the node segment base of first constructing hole to its first inner support completes, construction reference segment base hole to its first inner support completes again, node segment base hole and standard paragraphs foundation ditch crossed construction are until reach designed elevation, in the work progress of standard paragraphs foundation ditch, in the time that standard paragraphs pit earthwork is excavated to the depth corresponding with the weak location of node section foundation pit enclosure structure, to first in standard paragraphs foundation ditch, complete the outer support of node section foundation pit enclosure structure and the construction of outside gusset support, and then dig standard paragraphs pit earthwork under continuing. the present invention, by adopting the outer support of sequence construction node section foundation pit enclosure structure in standard paragraphs foundation ditch and the method for outside gusset support, has realized the crossed construction of node segment base hole and standard paragraphs foundation ditch, has greatly shortened engineering time and construction cost.

Description

A kind of subway transfer station deep basal pit crossed construction method
Technical field
The present invention relates to a kind of a kind of crossed construction method of construction method of foundation ditch, particularly adjacent foundation pits.
Background technology
Urban track traffic transfer station, reserved transfer node and the construction of other engineering adjacent foundation pits at present exists mutually dryThe situation of disturbing, taking transfer station as example, is generally the transfer node of first constructing, in the reserved back-pressure of transfer node both sides standard paragraphsSoil, after the transfer node earthwork, temporary supporting and agent structure complete, just can carry out standard station, transfer node both sides soilSide, temporary supporting and main structure construction, so just increased project construction duration and construction cost greatly, can not be executedWork order position is accepted.
Summary of the invention
The present invention provides a kind of subway transfer station deep basal pit crossed construction for solving the technical problem existing in known technologyMethod, the method can shorten the construction period, reduces construction cost.
The technical scheme that the present invention takes for the technical problem existing in solution known technology is: a kind of subway transfer stationDeep basal pit crossed construction method, described deep basal pit comprises adjacent node segment base hole and standard paragraphs foundation ditch, described construction methodCarry out according to following steps:
One) node section foundation pit enclosure structure is carried out to finite element structural analysis calculating, according to the stress of structure, strain maximumThe weak location of location positioning node section foundation pit enclosure structure; Complete executing of node segment base hole and standard paragraphs foundation pit enclosure structureWork;
Two) carry out the excavation in node segment base hole, dig to the 10cm place of its building enclosure first inner support below, start intoThe construction of row node section foundation pit enclosure structure first inner support and linking beam thereof, linking beam adopts lattice column to support, latticePost has completed construction before the earth excavation of node segment base hole;
Three) constructed and reached after design strength until node section foundation pit enclosure structure first inner support, having carried out standardThe earth excavation in segment base hole, digs to the 10cm place of its building enclosure first inner support below, starts to carry out standard paragraphs foundation ditchThe construction of building enclosure first inner support;
Four) constructed and reached after design strength repeating step until standard paragraphs foundation pit enclosure structure first inner supportTwo);
Five) be cycled to repeat step 3) and step 4) until node segment base hole and standard paragraphs foundation ditch reach designed elevation;
In the work progress of standard paragraphs foundation ditch, when standard paragraphs pit earthwork is excavated to thin with node section foundation pit enclosure structureWhen weak position corresponding depth, first in standard paragraphs foundation ditch, complete node section foundation pit enclosure structure outer support andThe construction of outside gusset support, and then dig standard paragraphs pit earthwork under continuing; In the friendship of node segment base hole and standard paragraphs foundation ditchIn fork work progress, the process of node segment base hole and standard paragraphs foundation ditch is excavated absolute altitude and must not differ and be greater than 5m.
The outside gusset support of the outer support of described node section foundation pit enclosure structure and described node section foundation pit enclosure structure adopts steelTendon concrete structure or steel construction.
The outside gusset support of the outer support of described node section foundation pit enclosure structure and described node section foundation pit enclosure structure is provided with2~3 roads.
Described step 1) in node section foundation pit enclosure structure and standard paragraphs foundation pit enclosure structure be ground-connecting-wall, steel sheet pile orOne in cast-in-situ bored pile.
Described step 2) in node section foundation pit enclosure structure inner support and described step 3) in standard paragraphs foundation pit enclosureStructure inner support adopts steel pipe or reinforced concrete structure to form.
Advantage and good effect that the present invention has are: by adopting sequence construction node segment base hole in standard paragraphs foundation ditch to encloseThe method of the outer support of protection structure and outside gusset support, strengthens the weak location of node section foundation pit enclosure structure, strengthens markThe connection of accurate segment base pit enclosure structure and node section foundation pit enclosure structure, prevents node section foundation pit enclosure structure and standard segment baseThe distortion that pit enclosure structure generation is excessive, and then realized the crossed construction of node segment base hole and standard paragraphs foundation ditch, greatly contractShort engineering time and construction cost. At soft clay area particularly suitable.
Brief description of the drawings
Fig. 1 is application plane of the present invention.
In figure: 1, node segment base hole; 11, node section foundation pit enclosure structure; 12, inner support; 13, linking beam; 14,Lattice column; 15, outer support; 16, outside gusset support; 2, standard paragraphs foundation ditch; 21, standard paragraphs foundation pit enclosure structure; 22,Inner support.
Detailed description of the invention
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawingBe described in detail as follows:
Refer to Fig. 1, a kind of subway transfer station deep basal pit crossed construction method, described deep basal pit comprises adjacent node sectionFoundation ditch 1 and standard paragraphs foundation ditch 2, in the present embodiment, standard paragraphs foundation ditch 2 has two, and 2 points of two standard paragraphs foundation ditches are located atThe both sides in node segment base hole 1.
Above-mentioned subway transfer station deep basal pit crossed construction method is carried out according to following steps:
One) node section foundation pit enclosure structure is carried out to finite element structural analysis calculating, according to the stress of structure, strain maximumThe weak location of location positioning node section foundation pit enclosure structure; Complete node segment base hole 1 and standard paragraphs foundation ditch 2 building enclosuresConstruction;
Two) carry out the excavation in node segment base hole 1, dig to the 10cm place of its building enclosure first inner supporting structure below,Start to carry out the construction of node section foundation pit enclosure structure 11 first inner supports 12 and linking beam 13 thereof, linking beam 13 is adoptedSupport with lattice column 14, lattice column 14 has completed construction before the earth excavation of node segment base hole;
Three) constructed and reached after design strength until node section foundation pit enclosure structure 11 first inner supports 12, having enteredThe earth excavation in column criterion segment base hole 2, digs to the 10cm place of its building enclosure first inner support 22 belows, start intoThe construction of column criterion section foundation pit enclosure structure 21 first inner supports 22;
Four) constructed and reached after design strength until standard paragraphs foundation pit enclosure structure 21 first inner supports 22, heavyMultiple step 2);
Five) be cycled to repeat step 3) and step 4) until node segment base hole 1 and standard paragraphs foundation ditch 2 reach designed elevation;
In the work progress of standard paragraphs foundation ditch 2, when standard paragraphs pit earthwork is excavated to node section foundation pit enclosure structureWhen the corresponding depth of weak location, first in standard paragraphs foundation ditch 2, complete node section foundation pit enclosure structure 11 outsideThe construction of support 15 and outside gusset support 16, and then dig standard paragraphs pit earthwork under continuing; Node segment base hole 1 HeIn the crossed construction process of standard paragraphs foundation ditch 2, the process excavation absolute altitude of node segment base hole 1 and standard paragraphs foundation ditch 2 differs notMust be greater than 5m. The node segment base of will guaranteeing first to construct in the crossed construction process of node segment base hole 1 and standard paragraphs foundation ditch 2 is cheated1。
In the present embodiment, the outer support 15 of described node section foundation pit enclosure structure and described node section foundation pit enclosure structureOutside gusset support 16 adopts reinforced concrete structure or steel construction. Outer support 25 Hes of described node section foundation pit enclosure structureThe outside gusset support 26 of described node section foundation pit enclosure structure is provided with 2~3 roads. Described step 1) in node segment base holeBuilding enclosure 11 and standard paragraphs foundation pit enclosure structure 21 are the one in ground-connecting-wall, steel sheet pile or cast-in-situ bored pile. DescribedStep 2) in node section foundation pit enclosure structure inner support 12 and described step 3) in standard paragraphs foundation pit enclosure structure inSupporting 22 adopts steel pipe or reinforced concrete structure to form.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above, the present invention is not limited to above-mentionedDetailed description of the invention, above-mentioned detailed description of the invention is only schematically, is not restrictive, this area generalLogical technical staff, under enlightenment of the present invention, is not departing from the scope situation that aim of the present invention and claim protect,Can also make a lot of forms, within these all belong to protection scope of the present invention.

Claims (5)

1. a subway transfer station deep basal pit crossed construction method, described deep basal pit comprises adjacent node segment base hole and markAccurate segment base hole, is characterized in that, described construction method is carried out according to following steps:
One) node section foundation pit enclosure structure is carried out to finite element structural analysis calculating, according to the stress of structure, strain maximumThe weak location of location positioning node section foundation pit enclosure structure; Complete executing of node segment base hole and standard paragraphs foundation pit enclosure structureWork;
Two) carry out the excavation in node segment base hole, dig to the 10cm of the building enclosure first inner support below in node segment base holePlace, starts to carry out the construction of node section foundation pit enclosure structure first inner support and linking beam thereof, and linking beam adopts lattice columnSupport, lattice column has completed construction before the earth excavation of node segment base hole;
Three) constructed and reached after design strength until node section foundation pit enclosure structure first inner support, having carried out standardThe earth excavation in segment base hole, digs to the 10cm place of the building enclosure first inner support below of standard paragraphs foundation ditch, starts to carry outThe construction of standard paragraphs foundation pit enclosure structure first inner support;
Four) constructed and reached after design strength repeating step until standard paragraphs foundation pit enclosure structure first inner supportTwo);
Five) be cycled to repeat step 3) and step 4) until node segment base hole and standard paragraphs foundation ditch reach designed elevation;
In the work progress of standard paragraphs foundation ditch, when standard paragraphs pit earthwork is excavated to thin with node section foundation pit enclosure structureWhen weak position corresponding depth, first in standard paragraphs foundation ditch, complete node section foundation pit enclosure structure outer support andThe construction of outside gusset support, and then dig standard paragraphs pit earthwork under continuing; In the friendship of node segment base hole and standard paragraphs foundation ditchIn fork work progress, the process of node segment base hole and standard paragraphs foundation ditch is excavated absolute altitude and must not differ and be greater than 5m.
2. subway transfer station deep basal pit crossed construction method according to claim 1, is characterized in that described jointThe outside gusset support of the outer support of some section foundation pit enclosure structure and described node section foundation pit enclosure structure adopts armored concrete knotStructure or steel construction.
3. subway transfer station deep basal pit crossed construction method according to claim 2, is characterized in that described jointThe outside gusset support of the outer support of some section foundation pit enclosure structure and described node section foundation pit enclosure structure is provided with 2~3 roads.
4. subway transfer station deep basal pit crossed construction method according to claim 1, is characterized in that described stepRapid one) the node section foundation pit enclosure structure in and standard paragraphs foundation pit enclosure structure are ground-connecting-wall, steel sheet pile or cast-in-situ bored pileIn one.
5. subway transfer station deep basal pit crossed construction method according to claim 1, is characterized in that described stepRapid two) node section foundation pit enclosure structure inner support and described step 3 in) in standard paragraphs foundation pit enclosure structure inner supportAdopt steel pipe or reinforced concrete structure to form.
CN201410535708.7A 2014-10-10 2014-10-10 A kind of subway transfer station deep basal pit crossed construction method Active CN104404963B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107806101B (en) * 2017-10-30 2020-05-19 上海市城市建设设计研究总院(集团)有限公司 Construction method for strip foundation pit cast-in-place concrete diagonal bracing prefabricated connecting beam
CN112813991A (en) * 2021-01-06 2021-05-18 安徽省公路桥梁工程有限公司 Excavation and support construction method for deep foundation pit of subway transfer station

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101067295A (en) * 2006-12-27 2007-11-07 马兴华 Method for utilizing underground souterrain combined with ground road to be as trolley bus passageway
CN201581409U (en) * 2009-12-25 2010-09-15 浙江中成建工集团有限公司 Combined tower crane foundation of cross beam supported by steel latticework columns in deep foundation pit
CN102505706A (en) * 2011-09-30 2012-06-20 北京市政建设集团有限责任公司 Method for building subway station
CN202787271U (en) * 2012-10-12 2013-03-13 上海强劲地基工程股份有限公司 Stacked inner supporting structure for foundation pit supporting

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3847718B2 (en) * 2002-12-26 2006-11-22 ダイコー株式会社 Elevator equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101067295A (en) * 2006-12-27 2007-11-07 马兴华 Method for utilizing underground souterrain combined with ground road to be as trolley bus passageway
CN201581409U (en) * 2009-12-25 2010-09-15 浙江中成建工集团有限公司 Combined tower crane foundation of cross beam supported by steel latticework columns in deep foundation pit
CN102505706A (en) * 2011-09-30 2012-06-20 北京市政建设集团有限责任公司 Method for building subway station
CN202787271U (en) * 2012-10-12 2013-03-13 上海强劲地基工程股份有限公司 Stacked inner supporting structure for foundation pit supporting

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