CN107524152A - A kind of foundation pit enclosure structure stress bringing device and its construction method - Google Patents

A kind of foundation pit enclosure structure stress bringing device and its construction method Download PDF

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Publication number
CN107524152A
CN107524152A CN201710951610.3A CN201710951610A CN107524152A CN 107524152 A CN107524152 A CN 107524152A CN 201710951610 A CN201710951610 A CN 201710951610A CN 107524152 A CN107524152 A CN 107524152A
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CN
China
Prior art keywords
fender body
steel sheet
pile
sheet pile
anchoring
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Pending
Application number
CN201710951610.3A
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Chinese (zh)
Inventor
李广金
全有维
黄峰
陈小龙
程建军
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Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
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Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd filed Critical Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
Priority to CN201710951610.3A priority Critical patent/CN107524152A/en
Publication of CN107524152A publication Critical patent/CN107524152A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/30Miscellaneous comprising anchoring details

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (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)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

The present invention discloses a kind of foundation pit enclosure structure stress bringing device, including fender body, some anchoring piles that are embedded on the outside of fender body protected as foundation ditch, and the tensioning rope system that each anchoring pile is coupled with fender body;The tensioning rope system includes tension, the stress being applied to by the tension regulation anchoring pile on the fender body.The foundation pit enclosure structure stress bringing device and construction method of the present invention, in work progress, operating environment safe and convenient in foundation ditch can be made, pit earthwork is greatly improved to excavate and structure construction speed, operating efficiency is improved, shortens the duration, simultaneously, it is small easy to operate to apply stress cost, lifts economic benefit.

Description

A kind of foundation pit enclosure structure stress bringing device and its construction method
Technical field
The present invention relates to the realm of building construction, specifically a kind of construction method of foundation pit enclosure structure.
Background technology
Under the overall situation that economic construction deepens constantly, how soon foundation pit enclosure is the essential content of many engineerings, The problem of high-quality completion Foundation Pit Construction of speed is each requirement of engineering primary study.Many base pit engineerings are related to going along with sb. to guard him knot Structure applies horizontal stress to strengthen the stability of foundation pit enclosure body, and current most foundation ditch all uses the pre-add on the inside of foundation ditch The method of stress, horizontal supports combination branch ejection device is mainly passed through to fender body prestress on the inside of foundation ditch(Such as hydraulic pressure thousand Jin top etc. is carried out), but for duration urgent engineering construction, if there is the horizontal support on the inside of building enclosure in design content, Mean that either earth excavation either engineering structure main body construction speed and efficiency all substantially reduces, exist to try to meet the deadline for the project and arrange Apply the problems such as cost is big.
The content of the invention
Goal of the invention:Present invention aims in view of the shortcomings of the prior art, there is provided a kind of to have necessarily on foundation ditch periphery Operable space length, under conditions of possessing construction anchoring pile, the stress bringing device that is arranged on the outside of foundation pit enclosure structure, The stress being applied in the case of not setting inner support according to the regulation of the deformation of fender body on fender body, carries out certain amplitude Fender body Deformation control, it is ensured that foundation pit construction Environmental security is convenient;
Another object of the present invention is to provide a kind of construction method of above-mentioned stress bringing device.
Technical scheme:Foundation pit enclosure structure stress bringing device of the present invention, including protected as foundation ditch fender body, Some anchoring piles being embedded on the outside of fender body, and the tensioning rope system that each anchoring pile is coupled with fender body;The tensioning rope system bag Tension is included, the stress being applied to by the tension regulation anchoring pile on the fender body.
Further preferably technical scheme is the present invention, and the tensioning rope system includes some steel wire ropes and installed in each steel wire Fender body and some anchoring piles are coupled as one by the flower basket bolt on rope, the steel wire rope, and institute is tightened up in the flower basket bolt tensioning Steel wire rope is stated, adjusts the stress that the anchoring pile is applied on the fender body.
Preferably, the fender body is formed by being embedded in the steel sheet pile on the outside of the foundation ditch, and each steel sheet pile is connected.
Preferably, each steel sheet pile for forming the fender body is coupled to be overall by channel-section steel, and the channel-section steel is located at the steel Sheet pile away from the cm of top 25 ~ 35 at.
Preferably, spacing is 5 ~ 8 m between adjacent two anchoring pile, is coupled between each anchoring pile by channel-section steel.
The construction method of foundation pit enclosure structure stress bringing device of the present invention, comprises the following steps:
(1)Implement fender body:First to fender body construction site carry out it is smooth, steel sheet pile beat pull out equipment march into the arena assemble and apply for checking and examination; Position is set to design steel sheet pile and measures setting-out, stake position is clear using gray line and positioning point identification;By design and scheme Set it is required that carrying out steel sheet pile, each steel sheet pile is connected with each other composition fender body using the method that is connected;
(2)Implement fender body connection:Below steel plate stake top at 25 ~ 35 cm, steel sheet pile will be gone along with sb. to guard him using channel-section steel and be coupled, Connecting method uses welding, and every steel sheet pile must effectively be contacted with channel-section steel;
(3)Set anchoring pile group:Set anchoring pile on the outside of fender body, the m of spacing 5 ~ 8 between two neighboring anchoring pile;
(4)Implement anchoring pile group to be coupled:Using with step(2)Identical connecting method, each anchoring pile is also coupled;
(5)Implement tensioning rope system:Anchoring pile group is coupled with fender body with tensioning rope system, is coupled after the completion of constructing and carries out tensioning The tensioning of rope system is tightened up, and applies stress to fender body;
(6)Fender body deformation observation, tensioning rope system apply Stress Control deformation:The earthwork is carried out after the tensioning of tensioning rope system is tightened up to open Dig, monitored before earth excavation and to steel sheet pile jacking row displacement at pile top during earth excavation, it is bigger than normal in steel sheet pile rate of displacement When, the stress of adjustment tensioning rope system is tended towards stability rapidly state with causing fender body;
(7)Stress bringing device is removed:Main structure construction acceptance(check) and foundation ditch, which backfill, to be finished, and is first discharged tensioning rope system and is applied Stress, then removed and steel sheet pile, anchoring pile extract.
Preferably, steel sheet pile, which is set, has spacing between position and agent structure outline, it is easy to main structure construction.
Preferably, after steel sheet pile position is clear and definite, position is set to steel sheet pile and carries out pipeline and underground obstacle exploration drilling, to phase Pipeline is closed to be investigated, change and move and adjacent lines reinforcement protection.
Preferably, steel sheet pile or anchoring pile cause steel sheet pile or anchoring pile to be contacted with channel-section steel due to setting deviations When, auxiliary inserts should be set, ensure to be coupled reliably.
Preferably, the tensioning rope system includes some steel wire ropes and the flower basket bolt on each steel wire rope, it is described Fender body and some anchoring piles are coupled as one by steel wire rope, and the steel wire rope is tightened up in the flower basket bolt tensioning, adjusts the anchor Stake is applied to the stress on the fender body;Steel wire rope and flower basket bolt specification are according to design of foundation pit stressing conditions and soil property situation Selected.
Beneficial effect:The foundation pit enclosure structure stress bringing device and construction method of the present invention has certain on foundation ditch periphery Operable space length, under conditions of possessing construction anchoring pile, the tensioning rope system of adjustable stress is set by anchoring pile and fender body It is coupled, answering for fender body is applied to by the regulation of tensioning rope system according to the deformation of fender body in the case where not setting inner support Power, the fender body Deformation control of certain amplitude is carried out, in work progress, operating environment safe and convenient in foundation ditch can be made, significantly Pit earthwork excavation and structure construction speed are improved, improves operating efficiency, shortens the duration, meanwhile, apply the small operation of stress cost Simplicity, lift economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of foundation pit enclosure structure stress bringing device of the present invention;
Fig. 2 is the construction plan of foundation pit enclosure structure stress bringing device of the present invention;
Fig. 3 is the construction process figure of foundation pit enclosure structure stress bringing device of the present invention;
In figure, 1- anchoring piles, 2- fender bodies, 3- flower basket bolts, 4- steel wire ropes, 5- channel-section steels.
Embodiment
Technical solution of the present invention is described in detail below by accompanying drawing, but protection scope of the present invention is not limited to The embodiment.
Embodiment 1:A kind of foundation pit enclosure structure stress bringing device, including protected as foundation ditch fender body 2, be embedded in Some anchoring piles 1 in the outside of fender body 2, and the tensioning rope system that each anchoring pile 1 is coupled with fender body 2.
Fender body 2 is formed by being embedded in the steel sheet pile on the outside of foundation ditch, and each steel sheet pile is connected.Form each of fender body 2 Steel sheet pile is coupled to be overall by channel-section steel 5, channel-section steel 5 be located at steel sheet pile away from the cm of top 30 at.
Spacing is 6m between adjacent two anchoring pile 1, is coupled between each anchoring pile 1 by channel-section steel 5.
Tensioning rope system include some steel wire ropes 4 and on each steel wire rope 4 flower basket bolt 3, steel wire rope 4 is by fender body 2 and some anchoring piles 1 be coupled as one, steel wire rope 4 is tightened up in the tensioning of flower basket bolt 3, regulation anchoring pile 1 be applied on fender body 2 should Power.
The construction method of above-mentioned foundation pit enclosure structure stress bringing device, comprises the following steps:
(1)Implement fender body:First to the construction site of fender body 2 carry out it is smooth, steel sheet pile beat pull out equipment march into the arena assemble and apply for checking and examination; Position is set to design steel sheet pile and measures setting-out, stake position is clear using gray line and positioning point identification;Steel sheet pile sets position Put and must take into consideration reasonable spacing with agent structure outline, so as to main structure construction;After steel sheet pile position is clear and definite, steel sheet pile is beaten If position carries out pipeline and underground obstacle exploration drilling, related pipeline is investigated, changes and moves and adjacent lines reinforcement protection;By setting Meter and scheme require that carrying out steel sheet pile sets, and each steel sheet pile is connected with each other composition fender body 2 using the method that is connected;
(2)Implement fender body connection:Below steel plate stake top at 30 cm, steel sheet pile will be gone along with sb. to guard him using channel-section steel 5 and be coupled, joined Knot method uses welding, and every steel sheet pile must effectively be contacted with channel-section steel 5, and steel sheet pile is caused due to setting deviations The position that can not be contacted with channel-section steel 5 should set auxiliary inserts;
(3)Set anchoring pile group:Set anchoring pile 1 on the outside of fender body, the m of spacing 6 between two neighboring anchoring pile 1;
(4)Implement anchoring pile group to be coupled:Using with step(2)Identical connecting method, each anchoring pile 1 is also coupled, due to beating If the position that deviations cause anchoring pile 1 and can not contacted with channel-section steel 5 should set auxiliary inserts;
(5)Implement tensioning rope system:The installation and tensioning for carrying out steel wire rope 4 and flower basket bolt 3 are tightened up, with steel wire rope 4 by anchoring pile 1 with Fender body 2 is coupled, and is coupled after the completion of constructing and is tightened up by the tensioning of the progress tensioning rope of flower basket bolt 3 system, fender body 2 is applied Add stress;Steel wire rope 4 and the specification of flower basket bolt 3 are selected according to design of foundation pit stressing conditions and soil property situation;
(6)Fender body deformation observation, tensioning rope system apply Stress Control deformation:The earthwork is carried out after the tensioning of tensioning rope system is tightened up to open Dig, monitored before earth excavation and to steel sheet pile jacking row displacement at pile top during earth excavation, it is bigger than normal in steel sheet pile rate of displacement When, the stress of adjustment tensioning rope system is tended towards stability rapidly state with causing fender body 2;
(7)Steel wire rope and flower basket bolt are in stress process, forbid heavy mechanical equipment and pedestrian to be covered by steel wire rope 4 Region;Special messenger is set to be monitored fender body 2, steel wire rope 4 and the state of flower basket bolt 3, if fender body 2 deforms more than warning value Carry out emergency processing, it is ensured that safety;
(7)Stress bringing device is removed:Main structure construction acceptance(check) and foundation ditch backfill finishes, first discharge flower basket bolt 3 and The stress of steel wire rope 4, then removed and steel sheet pile, anchoring pile 1 are extracted.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it must not be explained For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims define are not departed from Various changes can be made in the form and details for it.

Claims (10)

  1. A kind of 1. foundation pit enclosure structure stress bringing device, it is characterised in that including protected as foundation ditch fender body, be embedded in Some anchoring piles on the outside of fender body, and the tensioning rope system that each anchoring pile is coupled with fender body;The tensioning rope system includes pulling force Adjusting means, the stress being applied to by the tension regulation anchoring pile on the fender body.
  2. 2. foundation pit enclosure structure stress bringing device according to claim 1, it is characterised in that the tensioning rope system includes Some steel wire ropes and the flower basket bolt on each steel wire rope, it is one that fender body and some anchoring piles are coupled by the steel wire rope The steel wire rope is tightened up in body, the flower basket bolt tensioning, adjusts the stress that the anchoring pile is applied on the fender body.
  3. 3. foundation pit enclosure structure stress bringing device according to claim 1, it is characterised in that the fender body is by burying Steel sheet pile composition on the outside of the foundation ditch, each steel sheet pile are connected.
  4. 4. foundation pit enclosure structure stress bringing device according to claim 3, it is characterised in that form the fender body Each steel sheet pile is coupled to be overall by channel-section steel, the channel-section steel be located at the steel sheet pile away from the cm of top 25 ~ 35 at.
  5. 5. foundation pit enclosure structure stress bringing device according to claim 3, it is characterised in that between adjacent two anchoring pile Away from for 5 ~ 8 m, it is coupled between each anchoring pile by channel-section steel.
  6. 6. the construction method of foundation pit enclosure structure stress bringing device described in a kind of claim 1, it is characterised in that including as follows Step:
    (1)Implement fender body:First to fender body construction site carry out it is smooth, steel sheet pile beat pull out equipment march into the arena assemble and apply for checking and examination; Position is set to design steel sheet pile and measures setting-out, stake position is clear using gray line and positioning point identification;By design and scheme Set it is required that carrying out steel sheet pile, each steel sheet pile is connected with each other composition fender body using the method that is connected;
    (2)Implement fender body connection:Below steel plate stake top at 25 ~ 35 cm, steel sheet pile will be gone along with sb. to guard him using channel-section steel and be coupled, Connecting method uses welding, and every steel sheet pile must effectively be contacted with channel-section steel;
    (3)Set anchoring pile group:Set anchoring pile on the outside of fender body, the m of spacing 5 ~ 8 between two neighboring anchoring pile;
    (4)Implement anchoring pile group to be coupled:Using with step(2)Identical connecting method, each anchoring pile is also coupled;
    (5)Implement tensioning rope system:Anchoring pile group is coupled with fender body with tensioning rope system, is coupled after the completion of constructing and carries out tensioning The tensioning of rope system is tightened up, and applies stress to fender body;
    (6)Fender body deformation observation, tensioning rope system apply Stress Control deformation:The earthwork is carried out after the tensioning of tensioning rope system is tightened up to open Dig, monitored before earth excavation and to steel sheet pile jacking row displacement at pile top during earth excavation, it is bigger than normal in steel sheet pile rate of displacement When, the stress of adjustment tensioning rope system is tended towards stability rapidly state with causing fender body;
    (7)Stress bringing device is removed:Main structure construction acceptance(check) and foundation ditch, which backfill, to be finished, and is first discharged tensioning rope system and is applied Stress, then removed and steel sheet pile, anchoring pile extract.
  7. 7. construction method according to claim 6, it is characterised in that step(1)In, steel sheet pile sets position and body junction There is spacing between structure outline, be easy to main structure construction.
  8. 8. construction method according to claim 6, it is characterised in that step(1)In, after steel sheet pile position is clear and definite, to steel plate Stake sets position and carries out pipeline and underground obstacle exploration drilling, and related pipeline is investigated, changes and moves and adjacent lines reinforcement protection.
  9. 9. construction method according to claim 6, it is characterised in that step(2)With(4)In, steel sheet pile or anchoring pile due to When setting deviations and causing steel sheet pile or the anchoring pile can not to be contacted with channel-section steel, auxiliary inserts should be set, ensure to be coupled reliable.
  10. 10. construction method according to claim 6, it is characterised in that step(5)In, the tensioning rope system includes some Fender body and some anchoring piles are coupled as one by steel wire rope and the flower basket bolt on each steel wire rope, the steel wire rope, institute State flower basket bolt tensioning and tighten up the steel wire rope, adjust the stress that the anchoring pile is applied on the fender body;Steel wire rope and flower Basket bolt specification is selected according to design of foundation pit stressing conditions and soil property situation.
CN201710951610.3A 2017-10-13 2017-10-13 A kind of foundation pit enclosure structure stress bringing device and its construction method Pending CN107524152A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109056717A (en) * 2018-07-09 2018-12-21 广东工业大学 It is a kind of without support suspension device and its construction method
CN110185044A (en) * 2019-06-17 2019-08-30 中铁上海设计院集团有限公司 A kind of foundation pit side-wall Stress relief system for deep caving ground
CN110258580A (en) * 2019-06-17 2019-09-20 中铁上海设计院集团有限公司 A kind of construction method of the foundation pit enclosure structure as permanent underground structure
CN111676981A (en) * 2020-06-05 2020-09-18 浙江新中源建设有限公司 Foundation pit supporting structure and construction method thereof
CN111910647A (en) * 2020-08-20 2020-11-10 同济大学 Opposite-pulling type foundation pit supporting device

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KR20040008985A (en) * 2002-07-20 2004-01-31 (주)스틸엔콘크리트 Walltype pile phased tension in and manufacturing method thereof and construction method of pile wall structures using the same
JP2009150061A (en) * 2007-12-19 2009-07-09 Takenaka Doboku Co Ltd Sheet pile type support construction method of open-cut trench
CN101560771A (en) * 2009-05-11 2009-10-21 周治国 Reclaimable foundation pit bracing system and construction method thereof
CN204080880U (en) * 2014-07-15 2015-01-07 天津二十冶建设有限公司 A kind of prior-warning device of monitoring foundation pit deformation
CN205839768U (en) * 2016-07-28 2016-12-28 上海市城市建设设计研究总院 Cantilever Steel Sheet Pile foundation pit supporting construction
CN206034938U (en) * 2016-07-19 2017-03-22 北京博大经开建设有限公司 Pole setting formula two pass safety rope
CN107675713A (en) * 2017-10-26 2018-02-09 中交二航局第三工程有限公司 Pattern foundation pit supporting structure Larsen steel sheet pile system and construction method
CN207277343U (en) * 2017-10-13 2018-04-27 中建八局第三建设有限公司 A kind of foundation pit enclosure structure stress bringing device

Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
KR20040008985A (en) * 2002-07-20 2004-01-31 (주)스틸엔콘크리트 Walltype pile phased tension in and manufacturing method thereof and construction method of pile wall structures using the same
JP2009150061A (en) * 2007-12-19 2009-07-09 Takenaka Doboku Co Ltd Sheet pile type support construction method of open-cut trench
CN101560771A (en) * 2009-05-11 2009-10-21 周治国 Reclaimable foundation pit bracing system and construction method thereof
CN204080880U (en) * 2014-07-15 2015-01-07 天津二十冶建设有限公司 A kind of prior-warning device of monitoring foundation pit deformation
CN206034938U (en) * 2016-07-19 2017-03-22 北京博大经开建设有限公司 Pole setting formula two pass safety rope
CN205839768U (en) * 2016-07-28 2016-12-28 上海市城市建设设计研究总院 Cantilever Steel Sheet Pile foundation pit supporting construction
CN207277343U (en) * 2017-10-13 2018-04-27 中建八局第三建设有限公司 A kind of foundation pit enclosure structure stress bringing device
CN107675713A (en) * 2017-10-26 2018-02-09 中交二航局第三工程有限公司 Pattern foundation pit supporting structure Larsen steel sheet pile system and construction method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109056717A (en) * 2018-07-09 2018-12-21 广东工业大学 It is a kind of without support suspension device and its construction method
CN109056717B (en) * 2018-07-09 2020-11-17 广东工业大学 Support-free supporting device and construction method thereof
CN110185044A (en) * 2019-06-17 2019-08-30 中铁上海设计院集团有限公司 A kind of foundation pit side-wall Stress relief system for deep caving ground
CN110258580A (en) * 2019-06-17 2019-09-20 中铁上海设计院集团有限公司 A kind of construction method of the foundation pit enclosure structure as permanent underground structure
CN110185044B (en) * 2019-06-17 2023-12-12 中铁上海设计院集团有限公司 Foundation pit side wall stress adjustment system for deep unstable stratum
CN111676981A (en) * 2020-06-05 2020-09-18 浙江新中源建设有限公司 Foundation pit supporting structure and construction method thereof
CN111910647A (en) * 2020-08-20 2020-11-10 同济大学 Opposite-pulling type foundation pit supporting device

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