CN104404963A - Cross construction method for deep foundation pits in metro interchange station - Google Patents
Cross construction method for deep foundation pits in metro interchange station Download PDFInfo
- Publication number
- CN104404963A CN104404963A CN201410535708.7A CN201410535708A CN104404963A CN 104404963 A CN104404963 A CN 104404963A CN 201410535708 A CN201410535708 A CN 201410535708A CN 104404963 A CN104404963 A CN 104404963A
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- Prior art keywords
- foundation pit
- enclosure structure
- pit enclosure
- node
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a cross construction method for deep foundation pits in a metro interchange station. The method comprises the following steps: completing the construction from a node-section foundation pit to a first inner support; completing the construction from standard-section foundation pits to the first inner support; and conducting cross construction of the node-section foundation pit and the standard-section foundation pits until the designed elevation is reached. In the construction process of the standard-section foundation pits, when standard-section foundation pit earth is excavated to the depth corresponding to the week position of a node-section foundation pit support structure, the construction of external supports and external gusset plates of the node-section foundation pit support structure is completed in the standard-section foundation pits first, and then standard-section foundation pit earth is excavated. According to the method provided by the invention, the cross construction of the node-section foundation pit and the standard-section foundation pits is realized by adopting the method that the external supports and the external gusset plates of the node-section foundation pit support structure are constructed in sequence in the standard-section foundation pits, and the construction time and the construction cost are shortened greatly.
Description
Technical field
The present invention relates to a kind of construction method of foundation ditch, particularly a kind of crossed construction method of adjacent foundation pits.
Background technology
There is the situation of interference mutually in current urban track traffic transfer station, reserved transfer node and the construction of other engineering adjacent foundation pits, for transfer station, it is generally transfer node of first constructing, in transfer node both sides, standard paragraphs reserves back-pressure soil, after the transfer node earthwork, temporary support and agent structure complete, just can carry out the standard station earthwork of transfer node both sides, temporary support and main structure construction, so just considerably increase project construction duration and construction cost, can not accept by unit in charge of construction.
Summary of the invention
The present invention provides a kind of subway transfer station deep foundation ditch crossed construction method for solving in known technology the technical problem that exists, and the method can shorten the construction period, reduces construction cost.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: a kind of subway transfer station deep foundation ditch crossed construction method, described deep foundation ditch comprises adjacent node segment base hole and standard paragraphs foundation ditch, and described construction method is carried out according to following steps:
One) finite element structural analysis calculating is carried out to node section foundation pit enclosure structure, according to the stress of structure, the weak location of strain maximum position determination node section foundation pit enclosure structure; Complete the construction of node segment base hole and standard paragraphs foundation pit enclosure structure;
Two) excavation in node segment base hole is carried out, dig the 10cm place to its space enclosing structure first inner support, start the construction carrying out node section foundation pit enclosure structure first inner support and linking beam thereof, linking beam adopts lattice column to support, and lattice column completes construction before the soil excavation of node segment base hole;
Three) after node section foundation pit enclosure structure first inner support has been constructed and reached design strength, carry out the soil excavation of standard paragraphs foundation ditch, dig the 10cm place to its space enclosing structure first inner support, start the construction carrying out standard paragraphs foundation pit enclosure structure first inner support;
Four) after standard paragraphs foundation pit enclosure structure first inner support has been constructed and reached design strength, step 2 is repeated);
Five) step 3 is cycled to repeat) and step 4) until node segment base hole and standard paragraphs foundation ditch reach design elevation;
In the work progress of standard paragraphs foundation ditch, when standard paragraphs pit earthwork is excavated to the depth corresponding with the weak location of node section foundation pit enclosure structure, first to complete the outer support of node section foundation pit enclosure structure and the construction of outside gusset support in standard paragraphs foundation ditch, and then dig standard paragraphs pit earthwork under continuing; In the crossed construction process of node segment base hole and standard paragraphs foundation ditch, 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 outer support of described node section foundation pit enclosure structure and the outside gusset support of described node section foundation pit enclosure structure adopt reinforced concrete structure or steel work.
The outer support of described node section foundation pit enclosure structure and the outside gusset support of described node section foundation pit enclosure structure are provided with 2 ~ 3 roads.
Described step one) in node section foundation pit enclosure structure and standard paragraphs foundation pit enclosure structure be one in ground-connecting-wall, steel sheet pile or bored pile.
Described step 2) in node section foundation pit enclosure structure inner support and described step 3) in standard paragraphs foundation pit enclosure structure inner support adopt steel pipe or reinforced concrete structure to be formed.
The advantage that the present invention has and good effect are: the method supportted by the outer support and outside gusset adopting sequence construction node section foundation pit enclosure structure in standard paragraphs foundation ditch, strengthen the weak location of node section foundation pit enclosure structure, strengthen the connection of standard paragraphs foundation pit enclosure structure and node section foundation pit enclosure structure, prevent node section foundation pit enclosure structure and standard paragraphs foundation pit enclosure structure from producing excessive distortion, and then achieve the crossed construction of node segment base hole and standard paragraphs foundation ditch, substantially reduce engineering time and construction cost.At soft clay area particularly suitable.
Accompanying drawing explanation
Fig. 1 is application plan view 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 summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of subway transfer station deep foundation ditch crossed construction method, described deep foundation ditch comprises adjacent node segment base hole 1 and standard paragraphs foundation ditch 2, in the present embodiment, standard paragraphs foundation ditch 2 has two, and two standard paragraphs foundation ditches 2 points are located at the both sides in node segment base hole 1.
Above-mentioned subway transfer station deep foundation ditch crossed construction method is carried out according to following steps:
One) finite element structural analysis calculating is carried out to node section foundation pit enclosure structure, according to the stress of structure, the weak location of strain maximum position determination node section foundation pit enclosure structure; Complete the construction of node segment base hole 1 and standard paragraphs foundation ditch 2 space enclosing structure;
Two) excavation in node segment base hole 1 is carried out, dig the 10cm place to its space enclosing structure first inner supporting structure, start the construction carrying out node section foundation pit enclosure structure 11 first inner support 12 and linking beam 13 thereof, linking beam 13 adopts lattice column 14 to support, and lattice column 14 completes construction before the soil excavation of node segment base hole;
Three) after node section foundation pit enclosure structure 11 first inner support 12 has been constructed and reached design strength, carry out the soil excavation of standard paragraphs foundation ditch 2, dig the 10cm place to its space enclosing structure first inner support 22, start the construction carrying out standard paragraphs foundation pit enclosure structure 21 first inner support 22;
Four) after standard paragraphs foundation pit enclosure structure 21 first inner support 22 has been constructed and reached design strength, step 2 is repeated);
Five) step 3 is cycled to repeat) and step 4) until node segment base hole 1 and standard paragraphs foundation ditch 2 reach design elevation;
In the work progress of standard paragraphs foundation ditch 2, when standard paragraphs pit earthwork is excavated to the depth corresponding with the weak location of node section foundation pit enclosure structure, first to complete the outer support 15 of node section foundation pit enclosure structure 11 and the construction of outside gusset support 16 in standard paragraphs foundation ditch 2, and then dig standard paragraphs pit earthwork under continuing; In the crossed construction process of node segment base hole 1 and standard paragraphs foundation ditch 2, the process excavation absolute altitude of node segment base hole 1 and standard paragraphs foundation ditch 2 must not differ and is greater than 5m.Node segment base hole 1 of first constructing to be guaranteed in the crossed construction process that node segment base cheats 1 and standard paragraphs foundation ditch 2.
In the present embodiment, the outer support 15 of described node section foundation pit enclosure structure and the outside gusset support 16 of described node section foundation pit enclosure structure adopt reinforced concrete structure or steel work.The outer support 25 of described node section foundation pit enclosure structure and the outside gusset support 26 of described node section foundation pit enclosure structure are provided with 2 ~ 3 roads.Described step one) in node section foundation pit enclosure structure 11 and standard paragraphs foundation pit enclosure structure 21 are one in ground-connecting-wall, steel sheet pile or bored pile.Described step 2) in node section foundation pit enclosure structure inner support 12 and described step 3) in standard paragraphs foundation pit enclosure structure inner support 22 adopt steel pipe or reinforced concrete structure to be formed.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (5)
1. a subway transfer station deep foundation ditch crossed construction method, described deep foundation ditch comprises adjacent node segment base hole and standard paragraphs foundation ditch, and it is characterized in that, described construction method is carried out according to following steps:
One) finite element structural analysis calculating is carried out to node section foundation pit enclosure structure, according to the stress of structure, the weak location of strain maximum position determination node section foundation pit enclosure structure; Complete the construction of node segment base hole and standard paragraphs foundation pit enclosure structure;
Two) excavation in node segment base hole is carried out, dig the 10cm place to its space enclosing structure first inner support, start the construction carrying out node section foundation pit enclosure structure first inner support and linking beam thereof, linking beam adopts lattice column to support, and lattice column completes construction before the soil excavation of node segment base hole;
Three) after node section foundation pit enclosure structure first inner support has been constructed and reached design strength, carry out the soil excavation of standard paragraphs foundation ditch, dig the 10cm place to its space enclosing structure first inner support, start the construction carrying out standard paragraphs foundation pit enclosure structure first inner support;
Four) after standard paragraphs foundation pit enclosure structure first inner support has been constructed and reached design strength, step 2 is repeated);
Five) step 3 is cycled to repeat) and step 4) until node segment base hole and standard paragraphs foundation ditch reach design elevation;
In the work progress of standard paragraphs foundation ditch, when standard paragraphs pit earthwork is excavated to the depth corresponding with the weak location of node section foundation pit enclosure structure, first to complete the outer support of node section foundation pit enclosure structure and the construction of outside gusset support in standard paragraphs foundation ditch, and then dig standard paragraphs pit earthwork under continuing; In the crossed construction process of node segment base hole and standard paragraphs foundation ditch, 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 foundation ditch crossed construction method according to claim 1, is characterized in that, the outer support of described node section foundation pit enclosure structure and the outside gusset support of described node section foundation pit enclosure structure adopt reinforced concrete structure or steel work.
3. subway transfer station deep foundation ditch crossed construction method according to claim 2, is characterized in that, the outer support of described node section foundation pit enclosure structure and the outside gusset support of described node section foundation pit enclosure structure are provided with 2 ~ 3 roads.
4. subway transfer station deep foundation ditch crossed construction method according to claim 1, is characterized in that, described step one) in node section foundation pit enclosure structure and standard paragraphs foundation pit enclosure structure be one in ground-connecting-wall, steel sheet pile or bored pile.
5. subway transfer station deep foundation ditch crossed construction method according to claim 1, it is characterized in that, described step 2) in node section foundation pit enclosure structure inner support and described step 3) in standard paragraphs foundation pit enclosure structure inner support adopt steel pipe or reinforced concrete structure to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535708.7A CN104404963B (en) | 2014-10-10 | 2014-10-10 | A kind of subway transfer station deep basal pit crossed construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535708.7A CN104404963B (en) | 2014-10-10 | 2014-10-10 | A kind of subway transfer station deep basal pit crossed construction method |
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| Publication Number | Publication Date |
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| CN104404963A true CN104404963A (en) | 2015-03-11 |
| CN104404963B CN104404963B (en) | 2016-05-18 |
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| CN201410535708.7A Active CN104404963B (en) | 2014-10-10 | 2014-10-10 | A kind of subway transfer station deep basal pit crossed construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806101A (en) * | 2017-10-30 | 2018-03-16 | 上海市城市建设设计研究总院（集团）有限公司 | Construction method of the bar shaped foundation ditch cast-in-place concrete to the prefabricated linking beam of support |
| 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 (5)
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| JP2004250110A (en) * | 2002-12-26 | 2004-09-09 | Daiko Kk | Elevator device |
| 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 |
-
2014
- 2014-10-10 CN CN201410535708.7A patent/CN104404963B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004250110A (en) * | 2002-12-26 | 2004-09-09 | Daiko Kk | Elevator device |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806101A (en) * | 2017-10-30 | 2018-03-16 | 上海市城市建设设计研究总院（集团）有限公司 | Construction method of the bar shaped foundation ditch cast-in-place concrete to the prefabricated linking beam of support |
| 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 |
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| Publication number | Publication date |
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| CN104404963B (en) | 2016-05-18 |
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