CN103981898A - Integral open-excavation node top-down underground engineering construction method - Google Patents

Integral open-excavation node top-down underground engineering construction method Download PDF

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Publication number
CN103981898A
CN103981898A CN201410197317.9A CN201410197317A CN103981898A CN 103981898 A CN103981898 A CN 103981898A CN 201410197317 A CN201410197317 A CN 201410197317A CN 103981898 A CN103981898 A CN 103981898A
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concrete
support
waist rail
construction
hat
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CN103981898B (en
Inventor
徐向辉
孙俊岭
张建新
张万忠
张晓磊
白光忠
薛清鹏
刘宏宇
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China Railway Design Corp
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Third Railway Survey and Design Institute Group Corp
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Abstract

The invention discloses an integral open-excavation node top-down underground engineering construction method. The method combines the characteristics of an open-excavation sequential construction method and a covered top-down excavation method. On one hand, the invention provides the underground engineering construction method including local top-down elements in the integral open-excavation sequential construction engineering; the method has the characteristics of convenient and rapid construction, low difficulty and excellent quality of the open-excavation sequential construction method, and also has the safety of the top-down excavation method; temporary support operation and detachment can be reduced greatly, the investment is saved, the principles of energy-saving, environment-friendliness, and green building are embodied; on the other hand, reliable top-down node schemes and technical measures are provided; the node part structure and waterproof quality are guaranteed.

Description

A kind of contrary underground engineering construction method of doing of overall open cut node
Technical field
The invention belongs to underground construction technical field, relate to a kind of construction method of construction of underground structure, especially relate to a kind of contrary underground engineering construction method of doing of overall open cut node.
Background technology
Along with the development that urban modernization is built, the development & construction in space, three-dimensional city require day by day urgent, and the construction of all kinds of underground constructions is also more and more.The construction method of underground engineering mainly contains open cut and digs contrary sequence method etc. along the practice, lid.Open cut is first the rock at underground construction position (soil) all to be excavated along the practice, then constructing underground building, then the construction method of carrying out backfill.Lid digs contrary as first construct underground engineering structure pile and top board, then completes local method excavation and other underground structure from top to bottom and then completes the construction method that whole underground construction is built.At present, the underground engineering allowing for site condition generally adopts open cut to construct along the practice; Become the general lid that adopts to dig reverse construction for the large Large Underground work of site condition complexity, environmental protection pressure.
Open cut has along the practice that easy construction is quick, difficulty is low, quality is good, and waterproof effect easily ensures advantage; But control improper surrounding soil distortion and the ground settlement of easily causing, for major works, a large amount of concrete support systems need be set, temporary works is many, dismounting amount is large, and as supported while switching, significantly increases construction period and temporary works quantity.Lid digs reverse construction and can effectively control distortion and the ground settlement of surrounding soil, surrounding enviroment are effectively protected, improved the safety of construction, can realize permanent structure and temporary structure and organically combine, generally do not establish inner support or anchor ingot, save the expense of temporary works; But the horizontal construction joint of concrete lining wall is processed comparatively difficulty, and waterproof effect is difficult to ensure card; Unearthed charging inconvenience, difficulty of construction is large, and expense is high.
Summary of the invention
For above-mentioned problems of the prior art, the present invention, provides a kind of and has covered the construction method of digging the contrary underground construction of making element in overall open cut along introducing in making engineering along the practice and the feature that lid digs contrary sequence method in conjunction with open cut.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
The contrary underground engineering construction method of doing of overall open cut node of the present invention, comprises the steps:
One, press cut and cover method earth excavation, perform foundation pit enclosure structure, interim stand column pile and interim column, perform dewatering well, precipitation is to the following 0.5m of excavation face;
Two, under excavation of foundation pit to first supports, set up first and support, the two ends of supporting at first and space enclosing structure junction perform hat girder connection structure by contrary as mode;
Three, progressively excavate downwards, set up successively 2N road and support; While meeting odd number trace support, the two ends of supporting at odd number trace and space enclosing structure junction perform waist rail node structure by contrary as mode;
Four, be excavated to the end, hole, perform successively concrete cushion, base plate waterproofing and base arrangement;
Five, below dismounting, 2N road supports, and upwards performs under side wall waterproof, side wall and the support of agent structure to the 2N-1 road;
Six, retain 2N-1 road and support, continuation upwards performs under top board structure to the 2N-2 road support of side wall and negative N layer;
Seven, remove 2N-2 road and support, continue upwards to perform side wall waterproof, side wall and agent structure to the 2N-3 road and support;
Eight, repeat the operation of the 6th step and the 7th step, meet odd number trace and support reservation, meet even number road supporting removal, until first supports, retain first and support, continuation upwards performs side wall waterproof, side wall and agent structure to zero laminate;
Nine,, after concrete reaches design strength, remove odd number trace support and interim column, water level lowering well sealing point; Continue to perform overground part structure.
Wherein, the two ends of supporting at first in second step and space enclosing structure junction are by against the concrete grammar that performs hat girder connection structure as mode being:
Earth excavation is to hat beam when below, water-swellable sealing glue or sealing rod are laid in diaphragm wall and Guan Liang junction in space enclosing structure, construction reinforced bar concrete Guan Liang and reinforced concrete support, and in hat beam pre-buried bellows steam vent and the embedded bar with reinforcing bar connector that adapts with inwall arrangement of reinforcement;
The beam lower liner wall reinforcing bar of Guan Liang is reliably connected with embedded bar in hat beam, and under Guan Liang, lays water-swellable sealing glue or sealing rod and full-size grouting pipe;
Pour into a mould beam lower liner wall concrete and vibrate and return slurry and starch from the re-injection of bellows steam vent before concrete initial set to being preced with bellows steam vent in beam;
On Guan Liang, lay water-swellable sealing glue or sealing rod and full-size grouting pipe, the reinforcing bar of inwall on beam is reliably connected with embedded bar in hat beam;
The upper inwall concrete of cast Guan Liangliang.
The two ends of supporting at odd number trace in third step and space enclosing structure junction are by against the concrete grammar that performs waist rail node structure as mode being:
Earth excavation is to waist rail when below, water-swellable sealing glue or sealing rod are laid in diaphragm wall and waist rail junction in space enclosing structure, construction reinforced bar concrete breast beam and reinforced concrete support, and in waist rail pre-buried bellows steam vent and the embedded bar with reinforcing bar connector that adapts with inwall arrangement of reinforcement;
The beam lower liner wall reinforcing bar of waist rail is reliably connected with embedded bar in waist rail, and under waist rail, lays water-swellable sealing glue or sealing rod and full-size grouting pipe;
Cast beam lower liner wall concrete also vibrates to bellows steam vent in waist rail and returns slurry and starch from the re-injection of bellows steam vent before concrete initial set;
On waist rail, lay water-swellable sealing glue or sealing rod and full-size grouting pipe, the reinforcing bar of inwall on beam is reliably connected with embedded bar in hat beam;
Inwall concrete on cast waist rail beam.
Advantage of the present invention and beneficial effect are:
The feature that the present invention digs contrary sequence method in conjunction with open cut along the practice and lid, on the one hand, provide a kind of in overall open cut along the construction method of introducing the local contrary underground construction of making element in making engineering.The method has that open cut is quick along the easy construction of the practice, difficulty is low, the measured feature of matter, has the safety of contrary sequence method simultaneously, and reduces a large amount of temporary supportings and perform and remove, save investment, has embodied the principle of energy-saving and environmental protection, green building.On the other hand, propose reliably contraryly to make scheme of nodes and technical measures, guaranteed position of joints structure and waterproof quality.
Brief description of the drawings
Fig. 1 to Fig. 9 is the contrary engineering method schematic diagram of doing of overall open cut node of the present invention;
Figure 10 is the contrary structure organigram of doing of hat girder connection of the present invention;
Figure 11 is the contrary structure organigram of doing of waist rail node of the present invention.
Critical piece symbol description in figure:
1: diaphragm wall 2: steel concrete Guan Liang
3: beam lower liner wall 4: inwall on beam
5: bellows steam vent 6: water-swellable sealing glue
7: full-size grouting pipe 8: reinforcing bar connector
9: space enclosing structure 10: dewatering well
11: interim column 12: foundation ditch supports
13: waist rail node structure 14: hat girder connection structure
15: agent structure 16: reinforced concrete waist rail.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described.
Fig. 1 to Fig. 9 is the contrary engineering method schematic diagram of doing of overall open cut node of the present invention.With two-layer structure, foundation ditch under construction ground, four roads are set and are supported for example and describe, all the other underground constructions and this engineering method illustrate roughly the same.As shown in Figures 1 to 9, the contrary underground engineering construction method of doing of overall open cut node of the present invention, comprises the steps:
One, by cut and cover tunneling system, perform foundation pit enclosure structure, interim stand column pile and interim column, perform dewatering well, precipitation is to the following 0.5m of excavation face; Foundation pit enclosure structure comprises the member such as inwall 4 on the beam lower liner wall 3 of diaphragm wall 1, Guan Liang and waist rail and beam.
Two, under excavation of foundation pit to first supports, set up first and support, two ends and the space enclosing structure junction of supporting at first performs and is preced with girder connection structure and is combined measure with waterproof as mode by contrary;
Three, progressively downwards excavation, set up successively second and third, four roads support; Meet odd number trace while supporting, two ends and the space enclosing structure junction of supporting at odd number trace is by being combined measure with waterproof against perform waist rail node structure as mode;
Four, be excavated to the end, hole, perform successively concrete cushion, base plate waterproofing and base arrangement;
Five, structure base slab reaches after design strength, and below dismounting, supports in tetra-roads, upwards performs under side wall waterproof, structure side wall and agent structure Zhi tri-roads supports;
Six, retain San road and support, structure side wall is by being connected with waist rail node structure, passes through San road and supports, and under top board structure to the second that continues upwards to perform side wall and negative two layers supports, realizes underground two-layer structure and seals;
Seven, reach after intensity until underground two-layer structure top board, remove second and support, continue upwards to perform side wall waterproof, side wall and agent structure to first and support;
Eight, retain first and support, B1 structure side wall is combined with the hat girder connection structure of B1, passes through first and supports, and continues upwards to perform side wall waterproof, side wall and agent structure to zero laminate, realizes the sealing of B1 structure;
Nine, after concrete reaches design strength, dismounting first, San road support and interim column, and water level lowering well sealing point, completes whole underground constructions.Then continue to perform overground part structure, until complete whole engineering.
Figure 10 is the contrary structure organigram of doing of hat girder connection of the present invention.As shown in 10, hat girder connection structure comprises inwall 4 on the diaphragm wall 1, steel concrete hat beam 2, beam lower liner wall 3 and beam of space enclosing structure.In steel concrete hat beam 2, be embedded with bellows steam vent 5 and embedded bar connector 8, the upper and lower surface of Guan Liang is provided with water-swellable sealing glue 6 or sealing rod, and is connected with full-size grouting pipe 7.
The method that specifically performs of this hat girder connection structure is:
Earth excavation is to hat beam when below, water-swellable sealing glue or sealing rod are laid in diaphragm wall and Guan Liang junction in space enclosing structure, construction reinforced bar concrete Guan Liang and reinforced concrete support, Guan Liang meets the life requirement of permanent structure, and in hat beam pre-buried bellows steam vent and the embedded bar with reinforcing bar connector that adapts with inwall arrangement of reinforcement;
The beam lower liner wall reinforcing bar of Guan Liang is reliably connected with embedded bar in hat beam, and under Guan Liang, lays water-swellable sealing glue or sealing rod and full-size grouting pipe;
Pour into a mould beam lower liner wall concrete and vibrate and return slurry and starch from the re-injection of bellows steam vent before concrete initial set to being preced with bellows steam vent in beam;
On Guan Liang, lay water-swellable sealing glue or sealing rod and full-size grouting pipe, the reinforcing bar of inwall on beam is reliably connected with embedded bar in hat beam;
The upper inwall concrete of cast Guan Liangliang.
After underground major project completes, remove the reinforced concrete support being connected with Guan Liang, when dismounting, note the protection to agent structure.Groundwater table implements to reinstate full-size grouting pipe grouting for water plugging according to the seepage situation of Nodes after recovering.
Figure 11 is the contrary structure organigram of doing of waist rail node of the present invention.As shown in figure 11, waist rail node structure comprises inwall 4 on diaphragm wall 1, reinforced concrete waist rail 16, beam lower liner wall 3 and the beam of space enclosing structure.In reinforced concrete waist rail 16, be embedded with bellows steam vent 5 and embedded bar connector 8, the upper and lower surface of waist rail is provided with water-swellable sealing glue 6 or sealing rod, and is connected with full-size grouting pipe 7.
The method that specifically performs of waist rail node structure is:
Earth excavation is to waist rail when below, water-swellable sealing glue or sealing rod are laid in diaphragm wall and waist rail junction in space enclosing structure, construction reinforced bar concrete breast beam and reinforced concrete support, waist rail meets the life requirement of permanent structure, and in waist rail pre-buried bellows steam vent and the embedded bar with reinforcing bar connector that adapts with inwall arrangement of reinforcement;
The beam lower liner wall reinforcing bar of waist rail is reliably connected with embedded bar in waist rail, and under waist rail, lays water-swellable sealing glue or sealing rod and full-size grouting pipe;
Cast beam lower liner wall concrete also vibrates to bellows steam vent in waist rail and returns slurry and starch from the re-injection of bellows steam vent before concrete initial set;
On waist rail, lay water-swellable sealing glue or sealing rod and full-size grouting pipe, the reinforcing bar of inwall on beam is reliably connected with embedded bar in hat beam;
Inwall concrete on cast waist rail beam.
After underground major project completes, remove the reinforced concrete support being connected with waist rail, when dismounting, note the protection to agent structure.Groundwater table implements to reinstate full-size grouting pipe grouting for water plugging according to the seepage situation of Nodes after recovering.
The contrary structure of doing of Guan Liang of the present invention and waist rail node, by by effective combination of inwall 4 on the member of the foundation pit enclosure structures such as diaphragm wall 1, steel concrete hat beam 2 and beam lower liner wall 3 and beam, has avoided support to switch, effectively protected surrounding enviroment, accelerated construction speed.Realize reliable connection of beam lower liner wall 3 reinforcing bars and 4 reinforcing bars of inwall on beam by the embedded bar with reinforcing bar connector of burying underground in Guan Liang and waist rail; Bellows steam vent 5 by the diameter 50mm spacing 300mm that buries underground in Guan Liang and waist rail is realized the effective combination between Guan Liang or waist rail concrete and beam lower liner wall 3 concrete; Lay water-swellable sealing glue 6 by Guan Liang and waist rail upper and lower surface and strengthen the waterproof effect between new-old concrete with section outlet pipe 7 entirely.
The contrary underground engineering construction method of doing of overall open cut node of the present invention, adopts the design concept of forever facing combination, introduces the element of adverse construction method in overall open cut engineering method, has found an accelerating construction progress, has effectively protected the underground engineering construction method of surrounding enviroment; By burying bellows steam vent underground, laying the measures such as water-swellable sealing glue and full-size grouting pipe, guarantee the contrary quality of making node.This engineering method has following beneficial effect:
(1) improve efficiency of construction: in underground engineering implementation process, adopt underground construction soil excavation and the structure that cut and cover method is principal character to return the construction system of building, the construction space of opening wide, the convenient charging of being unearthed, has promoted efficiency of construction, guarantees the duration;
(2) ensure main structural engineering quality: contrary sequence method relatively, can there be good reinforcing bar binding and concreting and curing condition, guarantee main structural engineering quality;
(3) save investment: rationally utilize the combination effect of structural system and support system, compare pure cut and cover method, saved setting and the dismounting of a large amount of support systems, save investment, raising efficiency;
(4) effectively control foundation ditch displacement: there is the advantage of effective control foundation ditch safety of contrary sequence method, compared with cut and cover method, can avoid again supporting the foundation ditch displacement of substituting and bringing, very effective to deep big foundation pit risk control;
(5) the contrary effective control structure of node measure and the waterproof quality done: position of joints is by the measure to structure and waterproof two aspects, the workmanship of guarantee system key position.

Claims (3)

1. the contrary underground engineering construction method of doing of overall open cut node, is characterized in that, the method comprises the steps:
One, press cut and cover method earth excavation, perform foundation pit enclosure structure, interim stand column pile and interim column, perform dewatering well;
Two, under excavation of foundation pit to first supports, set up first and support, the two ends of supporting at first and space enclosing structure junction perform hat girder connection structure by contrary as mode;
Three, progressively excavate downwards, set up successively 2N road and support; While meeting odd number trace support, the two ends of supporting at odd number trace and space enclosing structure junction perform waist rail node structure by contrary as mode;
Four, be excavated to the end, hole, perform successively concrete cushion, base plate waterproofing and base arrangement;
Five, below dismounting, 2N road supports, and upwards performs under side wall waterproof, side wall and the support of agent structure to the 2N-1 road;
Six, retain 2N-1 road and support, continuation upwards performs under top board structure to the 2N-2 road support of side wall and negative N layer;
Seven, remove 2N-2 road and support, continue upwards to perform side wall waterproof, side wall and agent structure to the 2N-3 road and support;
Eight, repeat the operation of the 6th step and the 7th step, meet odd number trace and support reservation, meet even number road supporting removal, until first supports, retain first and support, continuation upwards performs side wall waterproof, side wall and agent structure to zero laminate;
Nine,, after concrete reaches design strength, remove odd number trace support and interim column, water level lowering well sealing point; Continue to perform overground part structure.
2. the contrary underground engineering construction method of doing of overall open cut node according to claim 1, is characterized in that, the two ends of supporting at first in second step and space enclosing structure junction are by against the concrete grammar that performs hat girder connection structure as mode being:
Earth excavation is to hat beam when below, water-swellable sealing glue or sealing rod are laid in diaphragm wall and Guan Liang junction in space enclosing structure, construction reinforced bar concrete Guan Liang and reinforced concrete support, and in hat beam pre-buried bellows steam vent and the embedded bar with reinforcing bar connector that adapts with inwall arrangement of reinforcement;
The beam lower liner wall reinforcing bar of Guan Liang is reliably connected with embedded bar in hat beam, and under Guan Liang, lays water-swellable sealing glue or sealing rod and full-size grouting pipe;
Pour into a mould beam lower liner wall concrete and vibrate and return slurry and starch from the re-injection of bellows steam vent before concrete initial set to being preced with bellows steam vent in beam;
On Guan Liang, lay water-swellable sealing glue or sealing rod and full-size grouting pipe, the reinforcing bar of inwall on beam is reliably connected with embedded bar in hat beam;
The upper inwall concrete of cast Guan Liangliang.
3. the contrary underground engineering construction method of doing of overall open cut node according to claim 1, is characterized in that, the two ends of supporting at odd number trace in third step and space enclosing structure junction are by against the concrete grammar that performs waist rail node structure as mode being:
Earth excavation is to waist rail when below, water-swellable sealing glue or sealing rod are laid in diaphragm wall and waist rail junction in space enclosing structure, construction reinforced bar concrete breast beam and reinforced concrete support, and in waist rail pre-buried bellows steam vent and the embedded bar with reinforcing bar connector that adapts with inwall arrangement of reinforcement;
The beam lower liner wall reinforcing bar of waist rail is reliably connected with embedded bar in waist rail, and under waist rail, lays water-swellable sealing glue or sealing rod and full-size grouting pipe;
Cast beam lower liner wall concrete also vibrates to bellows steam vent in waist rail and returns slurry and starch from the re-injection of bellows steam vent before concrete initial set;
On waist rail, lay water-swellable sealing glue or sealing rod and full-size grouting pipe, the reinforcing bar of inwall on beam is reliably connected with embedded bar in hat beam;
Inwall concrete on cast waist rail beam.
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CN104805864A (en) * 2015-03-18 2015-07-29 温州建设集团有限公司 Basement reverse building method outer wall groove and tongue and water-proofing gel combined waterproof construction technology
CN104929154A (en) * 2015-06-24 2015-09-23 中铁上海工程局集团北方工程有限公司 One-time pouring and forming construction technology for totally enclosed columns of cover and excavation top-down subway station
CN105113512A (en) * 2015-08-05 2015-12-02 中国建筑第八工程局有限公司 Bracing substitution at missed place of beam plate in foundation pit support structure and construction method thereof
CN105464134A (en) * 2015-12-31 2016-04-06 上海建工集团股份有限公司 Top-down and bottom-up combined construction method and supporting structure of multi-layer underground space below existing facility
CN106013241A (en) * 2016-07-12 2016-10-12 中铁第勘察设计院集团有限公司 Crown beam foundation trench upright construction and cover-excavation method station combination structural system and construction method
CN106013256A (en) * 2016-06-22 2016-10-12 中铁第四勘察设计院集团有限公司 Tenon type connector water-proof structure for side wall of concrete waist beam embedded structure
CN106320377A (en) * 2016-08-31 2017-01-11 中铁二局工程有限公司 Water-rich soft soil area deep foundation pit cover and excavation top-down construction method
CN106545029A (en) * 2016-01-03 2017-03-29 江西中恒地下空间科技有限公司 A kind of underground space safely and fast construction method
CN107012871A (en) * 2017-04-18 2017-08-04 武汉志和岩土工程有限公司 A kind of suspension type goes along with sb. to guard him the deep reversed construction method for greatly enhancing foundation ditch fabricated construction
CN108612128A (en) * 2018-05-15 2018-10-02 北京市市政工程设计研究总院有限公司 The dual or multi hole tunnel framing of open cut single layer is against support replacement construction method
CN108930275A (en) * 2018-07-25 2018-12-04 中国铁路设计集团有限公司 It is a kind of to face forever in conjunction with the ultra-deep shaft rapid constructing method along inverse combination
CN109056703A (en) * 2018-09-17 2018-12-21 中国铁路设计集团有限公司 A kind of construction method of assembled underground continuous wall
CN109837908A (en) * 2019-02-19 2019-06-04 中国建筑第八工程局有限公司 Foundation ditch construction method
CN109837910A (en) * 2019-02-19 2019-06-04 中国建筑第八工程局有限公司 The foundation ditch construction method that contrary sequence method and bracing members combine
CN109944250A (en) * 2019-03-07 2019-06-28 上海建工集团股份有限公司 The foundation pit of impermanent vertical support system is along inverse combining construction method
CN112482437A (en) * 2020-10-15 2021-03-12 上海建工二建集团有限公司 Integrated vertical supporting system for reverse construction pile and construction method thereof

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CN104805864A (en) * 2015-03-18 2015-07-29 温州建设集团有限公司 Basement reverse building method outer wall groove and tongue and water-proofing gel combined waterproof construction technology
CN104929154B (en) * 2015-06-24 2016-06-08 中铁上海工程局集团北方工程有限公司 Covered back-digging subway station totally-enclosed post one-time-concreting molding construction technique
CN104929154A (en) * 2015-06-24 2015-09-23 中铁上海工程局集团北方工程有限公司 One-time pouring and forming construction technology for totally enclosed columns of cover and excavation top-down subway station
CN105113512A (en) * 2015-08-05 2015-12-02 中国建筑第八工程局有限公司 Bracing substitution at missed place of beam plate in foundation pit support structure and construction method thereof
CN105464134A (en) * 2015-12-31 2016-04-06 上海建工集团股份有限公司 Top-down and bottom-up combined construction method and supporting structure of multi-layer underground space below existing facility
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CN106013256B (en) * 2016-06-22 2018-03-20 中铁第四勘察设计院集团有限公司 The tenon formula joint waterproofing structure of concrete waist rail embedded structure side wall
CN106013256A (en) * 2016-06-22 2016-10-12 中铁第四勘察设计院集团有限公司 Tenon type connector water-proof structure for side wall of concrete waist beam embedded structure
CN106013241A (en) * 2016-07-12 2016-10-12 中铁第勘察设计院集团有限公司 Crown beam foundation trench upright construction and cover-excavation method station combination structural system and construction method
CN106013241B (en) * 2016-07-12 2018-06-08 中铁第一勘察设计院集团有限公司 Guan Liang foundation trench uprightly performs and cap excavation method station integrated structure system and construction method
CN106320377A (en) * 2016-08-31 2017-01-11 中铁二局工程有限公司 Water-rich soft soil area deep foundation pit cover and excavation top-down construction method
CN106320377B (en) * 2016-08-31 2019-03-08 中铁二局集团有限公司 A kind of rich water soft clay area deep basal pit covered back-digging construction method
CN107012871A (en) * 2017-04-18 2017-08-04 武汉志和岩土工程有限公司 A kind of suspension type goes along with sb. to guard him the deep reversed construction method for greatly enhancing foundation ditch fabricated construction
CN108612128A (en) * 2018-05-15 2018-10-02 北京市市政工程设计研究总院有限公司 The dual or multi hole tunnel framing of open cut single layer is against support replacement construction method
CN108930275A (en) * 2018-07-25 2018-12-04 中国铁路设计集团有限公司 It is a kind of to face forever in conjunction with the ultra-deep shaft rapid constructing method along inverse combination
CN109056703A (en) * 2018-09-17 2018-12-21 中国铁路设计集团有限公司 A kind of construction method of assembled underground continuous wall
CN109837908A (en) * 2019-02-19 2019-06-04 中国建筑第八工程局有限公司 Foundation ditch construction method
CN109837910A (en) * 2019-02-19 2019-06-04 中国建筑第八工程局有限公司 The foundation ditch construction method that contrary sequence method and bracing members combine
CN109837908B (en) * 2019-02-19 2021-08-17 中国建筑第八工程局有限公司 Foundation pit construction method
CN109944250A (en) * 2019-03-07 2019-06-28 上海建工集团股份有限公司 The foundation pit of impermanent vertical support system is along inverse combining construction method
CN109944250B (en) * 2019-03-07 2020-11-27 上海建工集团股份有限公司 Foundation pit forward and backward combined construction method of non-permanent vertical supporting system
CN112482437A (en) * 2020-10-15 2021-03-12 上海建工二建集团有限公司 Integrated vertical supporting system for reverse construction pile and construction method thereof

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