CN106193047A - Big width base pit stand construction - Google Patents
Big width base pit stand construction Download PDFInfo
- Publication number
- CN106193047A CN106193047A CN201610442745.2A CN201610442745A CN106193047A CN 106193047 A CN106193047 A CN 106193047A CN 201610442745 A CN201610442745 A CN 201610442745A CN 106193047 A CN106193047 A CN 106193047A
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- support
- deformed bar
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000004873 anchoring Methods 0.000 claims abstract description 13
- 238000009412 basement excavation Methods 0.000 claims abstract description 12
- 239000002689 soil Substances 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 11
- 230000006641 stabilisation Effects 0.000 claims abstract description 5
- 238000011105 stabilization Methods 0.000 claims abstract description 5
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000033228 biological regulation Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 238000001556 precipitation Methods 0.000 description 10
- 239000004927 clay Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000005442 atmospheric precipitation Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
Landscapes
- 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)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of big width base pit stand construction, it is characterized in that (1) construction work stake；(2) construction supporting stake；(3) construction water-stop curtain；(4) construction soil cement stabilization zone；(5) Guan Liang is poured；(6) Construction Support beam, installs support beam deformed bar, arranges an ejection device, sets up prestressing force, with anchoring piece, deformed bar is fixed on billet；(7) cutting the earth, earth excavation uses benzvalene form stage excavation, and earthwork lift height is 40～50mm.
Description
Technical field
The present invention relates to a kind of big width base pit stand construction, it is adaptable to the realm of building construction.
Background technology
If foundation ditch width is relatively big, support beam axle power can be very big, and some support beams can be destroyed not due to load.Separately
Outward, the shearing of support beam adjacent edges is very big, and the concrete of engineering practice central branch support beam adjacent edges is because of shearing strength not
Enough destroyed.In the case of foundation ditch width is relatively big, support beam span can be very big, and middle part moment of flexure can be very big, some ergonomic support
Can curved crush bad in the middle part of beam.When deep basal pit bottom can reduce water-bearing layer upper confining bed with the presence of artesian aquifer, excavation pit
Thickness, when impermeable layer thickness is reduced to a certain degree, the head pressure energy capping of artesian water or the foundation ditch foundation soil that destroys by rush of water, give
Construction brings the biggest difficulty.
Summary of the invention
The technical problem to be solved is to provide a kind of big width base pit stand construction, and the method is solving
In big width foundation pit support construction, support beam easy stress destruction, artesian water destroy the problem of foundation soil bottom foundation ditch.
For arranging water-stop curtain outside support pile in the technical scheme that this present invention provides, if place exists artesian water
Layer, the water-stop curtain degree of depth is 25～30m, uses three axle cement mixing pile water stopping curtains, and cement mixing pile uses three rows.If not yet
Having artesian aquifer, the water-stop curtain degree of depth is 15～20m, uses two axle cement mixing pile water stopping curtains, and cement mixing pile uses two
Row.
In order to prevent from being broken ground inside support pile protuberance, employing water under high pressure mud of being broken ground inside support pile is reinforced,
Reinforcing position is the following excavation of foundation pit degree of depth of absolute altitude at the bottom of foundation ditch 1～1.2 times, and reinforcing width is 1～1.5m.
The present invention, according to the feature of big width foundation ditch, using engineering pile as the strong point of support beam, makes support beam become even
Continuous beam, thus reduce the span of support beam.Presstressed reinforcing steel is carried out electric heat prestressing, makes jointly holding of deformed bar and concrete
Power effect is more preferable, can bear bigger bending moment and axle power.Deformed bar is turned up near supporting-point, can suppress effectively to cut
Cut through bad generation.
Support pile top arranges Guan Liang, and hat beam concrete strength is more than or equal to C30, and hat depth of beam is 700～1000mm,
Support beam and engineering pile connection, engineering pile reinforcing bar is bent into right angle after stretching into support beam and anchors, and anchorage length is 40 times of works
Journey stake bar diameter, support pile becomes two hold-down supports of support beam, and engineering pile becomes the bearing support of support beam, supports
Beam becomes beam structure, and this alleviates the moment of flexure that support beam is born the most significantly.Support beam uses deformed bar, prestressing force
Reinforcing bar uses broken line stretch-draw, and broken line point is arranged on 2/3 position of 1/3 and single span of single span in beam structure, due to continuously
In girder construction, between supporting-point and single span 1/3, position is based on hogging moment load, and the present invention agrees with this feature and propping up
Hold reinforcing bar a little and between single span 1/3 and use diagonally disposed, make reinforcing steel bar bear efficiency give full play to.Anchoring piece is by deformed bar
It is fixed on billet.
Oblique section of deformed bar middle part arranges an ejection device, by oblique section of angle of ejection device Altitude control.For subtracting
Little frictional resistance, an ejection device end face does in the arc-shaped, pastes the thick poly-trifluoro-ethylene plate of 1 5mm in the cambered surface of an ejection device, with
Reduce the frictional resistance propped up between ejection device and deformed bar.
If place exists artesian aquifer, in the range of artesian water, arrange vent, arrange one along foundation ditch every 10～15m
Vent, vent a diameter of 400～600mm, vent includes marine riser, filter pipe, precipitation tube, marine riser, filter pipe, heavy
Shallow lake pipe diameter is identical, a diameter of 200～400mm, and diameter is adjusted according to artesian head, is less than or equal to for artesian head
During 3m, a diameter of 200mm, when artesian head is more than to 3m and is less equal than 8m, a diameter of 250mm, for artesian head
More than 8m and less equal than 12m time, a diameter of 300mm, for artesian head more than 12m and less equal than 15m time, diameter
For 350mm, during for artesian head more than 15m, a diameter of 400mm.Marine riser, filter pipe, precipitation tube all use pipe of concrete
Or steel pipe, pipe of concrete wall thickness is 30mm, and thickness of steel pipe is 6mm, arranges clay outside marine riser, bottom marine riser 0.5～
Arranging ball sealer in the range of 0.8m outside marine riser is filter pipe below water proof, marine riser, and filter pipe is arranged on artesian water
Position, on filter pipe tube wall, cutting aperture is with water inlet, and hole diameter is 3～5mm, and percent opening is 15～20%, filter pipe outer wall
Parcel filter screen, arranges aggregate chips for drainage outside filter screen, aggregate chips a diameter of 2～4mm, is precipitation tube below filter pipe, precipitation tube
A length of 1～1.2m.Ball sealer uses rubber to make, and is inflated by ball sealer, put into vent before placing, and it is to float over decompression
On the water surface in hole.Then starting to put clay, clay can be depressed into bottom marine riser ball sealer, it is ensured that drainage layer water not to
Upper infiltration.
Construction procedure includes:
(1) construction work stake
Shelving the Construction of Engineering Pile of support beam to supporting bottom elevation, Other Engineering pile driving construction is marked at the bottom of basement bottom board
High.
(2) construction supporting stake
Support pile uses large diameter bored pile, and cast-in-situ bored pile deposit control is within 15cm.
(3) construction water-stop curtain
(4) construction soil cement stabilization zone
(5) Guan Liang is poured
(6) Construction Support beam
Install support beam deformed bar, an ejection device is set, carry out being energized for the first time before support beam concreting
Heating, electrified regulation 5min, sets up primary stress, then by anchoring piece, deformed bar is fixed on billet, anchoring piece
Casting concrete after Gu Ding, carries out second time electrified regulation when concrete initial set, and electrified regulation 10min, at concrete
Carry out third time electrified regulation after pouring 12 hours, set up prestressing force, with anchoring piece, deformed bar is fixed on billet.
(7) cut the earth
Earth excavation uses benzvalene form stage excavation, and earthwork lift height is 40～50mm, 2.5～3.5m scope near foundation ditch
The interior earthwork is first retained, with make full use of periphery back-pressure soil drag slow down support pile to hole in deform.First middle part is excavated
Region, is then used in the lower subregion of support, symmetrical cuts the earth, and the earthwork in the range of being finally transferred near foundation ditch 2.5～3.5m, by digging machine
It is loaded into dump truck and transports foundation ditch.
Accompanying drawing explanation
Fig. 1 is foundation pit supporting construction schematic diagram, and Fig. 2 is vent elevational schematic view, and Fig. 3 is vent section 1 schematic diagram,
Fig. 4 is vent section 2 schematic diagram.
In each accompanying drawing: 1, support pile, 2, water-stop curtain, 3, soil cement stabilization zone, 4, Guan Liang, 5, engineering pile, 6, support beam,
7, deformed bar, 8, ejection device, 9, billet, 10, anchoring piece, 11, marine riser, 12, filter pipe, 13, precipitation tube, 14,
Clay, 15, ball sealer, 16, filter screen, 17, aggregate chips.
Detailed description of the invention
Certain engineering 11 layers on the ground, 1 layer, underground, overall floorage 75400m2, wherein basement construction area 6100m, foundation ditch
Width is relatively big, reaches 64m, and foundation depth is 5.8m, uses frame shear wall structure, and place groundwater type includes that upper strata is stagnant
Water and porous confined groundwater.Perched water is mainly composed and is stored in artificial miscellaneous fill layer, mainly accepts Atmospheric precipitation and earth's surface aproll
Infiltration supply, without unified table, the water yield and season, periphery Escape condition are in close relations.Artesian water and surface water and region
Artesian water system close relation, the water yield is abundant, and artesian head is 5～7m.
As it can be seen, the big width base pit stand construction that the present invention provides includes arranging outside support pile 1 sealing curtain
Curtain 2, water-stop curtain 2 degree of depth is 28m, uses three axle cement mixing pile water stopping curtains 2, and cement mixing pile uses three rows.Support pile 1
Inner side broken ground employing water under high pressure mud reinforce, reinforcement depth be the excavation of foundation pit degree of depth 1 again to 2 times, reinforce width be 1～
1.5m.Using engineering pile 5 as the strong point of support beam 6, support beam 6 is made to become continuous beam.Presstressed reinforcing steel is carried out electric heat prestressing.
Support pile 1 top arranges hat beam 4, and hat beam 4 concrete strength is C35, and hat beam 4 height is 900mm, support beam 6 He
Engineering pile 5 connects, and engineering pile 5 reinforcing bar is bent into right angle after stretching into support beam 6 and anchors, and anchorage length is 40 times of engineering piles 5
Bar diameter, support pile 1 becomes two hold-down supports of support beam 6, and engineering pile 5 becomes the bearing support of support beam 6, supports
Beam 6 becomes beam structure.Support beam 6 uses deformed bar 7, deformed bar 7 to use broken line stretch-draw, broken line point to be arranged on
2/3 position of 1/3 and single span of single span in beam structure.Deformed bar 7 is fixed on billet 9 by anchoring piece 10.
Oblique section of deformed bar 7 middle part arranges an ejection device 8, by oblique section of angle of ejection device 8 Altitude control.?
Ejection device 8 end face does in the arc-shaped, pastes the thick poly-trifluoro-ethylene plate of 1 5mm in the cambered surface of an ejection device 8, props up to reduce
Frictional resistance between ejection device 8 and deformed bar 7.
There is artesian aquifer in place, arranges vent, arrange a vent along the every 12m of foundation ditch in the range of artesian water,
The a diameter of 450mm of vent, vent includes marine riser 11, filter pipe 12, precipitation tube 13, marine riser 11, filter pipe 12, precipitation
Pipe 13 diameter is identical, a diameter of 250mm.Marine riser 11, filter pipe 12, precipitation tube 13 all use pipe of concrete, concrete tube wall
Thickness is 30mm, arranges clay 14, arrange ball sealer bottom marine riser 11 in the range of 0.6m outside marine riser 11 outside marine riser 11
15 are used for water proof, and marine riser 11 is filter pipe 12 below, and filter pipe 12 is arranged on artesian water position, and filter pipe 12 tube wall is dug
Aperture is with water inlet, and hole diameter is 4mm, and percent opening is 18%, filter pipe 12 outer wall parcel filter screen 16, arranges stone outside filter screen 16
Bits 17 are precipitation tube 13 for drainage, aggregate chips 17 a diameter of 2～4mm, filter pipe 12 below, a length of 1.1m of precipitation tube 13.Close
Blocking 15 uses rubber to make, and is inflated by ball sealer 15, put into vent before placing, and it is to float over the water surface in vent
On.Then starting to put clay 14, clay 14 can be depressed into bottom marine riser 11 ball sealer 15, it is ensured that drainage layer water is the most upwards
Infiltration.
Construction procedure includes:
(1) construction work stake 5
The engineering pile 5 shelving support beam 6 is constructed to support beam 6 end absolute altitude, and Other Engineering stake 5 is constructed at the bottom of basement bottom board
Absolute altitude.
(2) construction supporting stake 1
Support pile 1 uses large diameter bored pile, and cast-in-situ bored pile deposit control is within 15cm.
(3) construction water-stop curtain 2
(4) construction soil cement stabilization zone 3
(5) hat beam 4 is poured
(6) Construction Support beam 6
Install support beam 6 deformed bar 7, an ejection device 8 is set, carry out before support beam 6 concreting for the first time
Electrified regulation, electrified regulation 5min, sets up primary stress, then by anchoring piece 10, deformed bar 7 is fixed on billet
9, casting concrete after anchoring piece 10 is fixing, second time electrified regulation, electrified regulation is carried out when concrete initial set
10min, carries out third time electrified regulation after 12 hours in concreting, sets up prestressing force, with anchoring piece 10 by prestressing force
Reinforcing bar 7 is fixed on billet 9.
(7) cut the earth
Earth excavation uses benzvalene form stage excavation, and earthwork lift height is 40～50mm, 2.5～3.5m scope near foundation ditch
The interior earthwork is first retained, with make full use of periphery back-pressure soil drag slow down support pile 1 to hole in deform.First middle part is excavated
Region, is then used in the lower subregion of support, symmetrical cuts the earth, and the earthwork in the range of being finally transferred near foundation ditch 2.5～3.5m, by digging machine
It is loaded into dump truck and transports foundation ditch.
In the excavation and support processes of whole foundation ditch, 18 observation stations arranged in advance are carried out uninterrupted observation, its
The maximal displacement amount of middle measuring point is 6mm, and foundation ditch does not the most occur gushing soil phenomenon in work progress, meets deep pit monitor stable
Needs, also ensure that the safety of surrounding building and urban operating mechanism simultaneously.
Claims (1)
1. a big width base pit stand construction, is characterized in that construction procedure includes:
(1) construction work stake
Shelving the Construction of Engineering Pile of support beam to supporting bottom elevation, Other Engineering pile driving construction is to absolute altitude at the bottom of basement bottom board；
(2) construction supporting stake
Support pile uses large diameter bored pile, and cast-in-situ bored pile deposit control is within 15cm；
(3) construction water-stop curtain
(4) construction soil cement stabilization zone
(5) Guan Liang is poured
(6) Construction Support beam
Install support beam deformed bar, an ejection device be set, before support beam concreting, carry out electrified regulation for the first time,
Electrified regulation 5min, sets up primary stress, then by anchoring piece, deformed bar is fixed on billet, and anchoring piece has been fixed
Finishing after-pouring concrete, carry out second time electrified regulation when concrete initial set, electrified regulation 10min, in concreting 12
Carry out third time electrified regulation after individual hour, set up prestressing force, with anchoring piece, deformed bar is fixed on billet；
(7) cut the earth
Earth excavation uses benzvalene form stage excavation, and earthwork lift height is 40～50mm, soil in the range of 2.5～3.5m near foundation ditch
Side first retained, with make full use of periphery back-pressure soil drag slow down support pile to hole in deform；First central region is excavated,
Then it is used in the lower subregion of support, symmetrical cuts the earth, the earthwork in the range of being finally transferred near foundation ditch 2.5～3.5m, digging machine load
Foundation ditch is transported to dump truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610442745.2A CN106193047B (en) | 2015-04-07 | 2015-04-07 | Big width base pit stand construction |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189119.2A CN104790412B (en) | 2015-04-07 | 2015-04-07 | Big width foundation pit supporting construction in the case of artesian water |
| CN201610442745.2A CN106193047B (en) | 2015-04-07 | 2015-04-07 | Big width base pit stand construction |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510189119.2A Division CN104790412B (en) | 2015-04-07 | 2015-04-07 | Big width foundation pit supporting construction in the case of artesian water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106193047A true CN106193047A (en) | 2016-12-07 |
| CN106193047B CN106193047B (en) | 2018-04-03 |
Family
ID=53555567
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510189119.2A Active CN104790412B (en) | 2015-04-07 | 2015-04-07 | Big width foundation pit supporting construction in the case of artesian water |
| CN201610442745.2A Active CN106193047B (en) | 2015-04-07 | 2015-04-07 | Big width base pit stand construction |
| CN201610442857.8A Expired - Fee Related CN106120803B (en) | 2015-04-07 | 2015-04-07 | Base pit stand construction in the case of artesian water |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510189119.2A Active CN104790412B (en) | 2015-04-07 | 2015-04-07 | Big width foundation pit supporting construction in the case of artesian water |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610442857.8A Expired - Fee Related CN106120803B (en) | 2015-04-07 | 2015-04-07 | Base pit stand construction in the case of artesian water |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN104790412B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503355A (en) * | 2017-07-20 | 2017-12-22 | 广东省建筑工程集团有限公司 | Shaped steel formula double-row pile foundation pit supporting system and its construction method are inserted after outer row |
| CN108035370A (en) * | 2017-12-18 | 2018-05-15 | 蔡婷婷 | A kind of well-point pipe and the foundation ditch construction method using the well-point pipe |
| CN110130356A (en) * | 2019-06-05 | 2019-08-16 | 汕头市建筑工程总公司 | A kind of muddy soft soil area basement cheats bottom monoblock type back cover construction method |
| CN110306557A (en) * | 2019-07-10 | 2019-10-08 | 武汉立诚岩土工程有限公司 | Earthwork digging method based on basement deep-foundation pit engineering |
| CN110374093A (en) * | 2019-07-16 | 2019-10-25 | 深圳市市政工程总公司 | High pressure-bearing crevice water earth-boring cast-in-place pile construction method |
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| CN114482016A (en) * | 2022-03-11 | 2022-05-13 | 中国十九冶集团有限公司 | Threaded steel pipe pile and deep foundation pit construction method |
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| CN107503355B (en) * | 2017-07-20 | 2023-10-13 | 广东省建筑工程集团有限公司 | Externally-arranged rear-inserted steel type double-row pile foundation pit supporting system and construction method thereof |
| CN108035370A (en) * | 2017-12-18 | 2018-05-15 | 蔡婷婷 | A kind of well-point pipe and the foundation ditch construction method using the well-point pipe |
| CN110130356A (en) * | 2019-06-05 | 2019-08-16 | 汕头市建筑工程总公司 | A kind of muddy soft soil area basement cheats bottom monoblock type back cover construction method |
| CN110306557A (en) * | 2019-07-10 | 2019-10-08 | 武汉立诚岩土工程有限公司 | Earthwork digging method based on basement deep-foundation pit engineering |
| CN110306557B (en) * | 2019-07-10 | 2021-04-13 | 武汉立诚岩土工程有限公司 | Earth excavation method based on basement deep foundation pit engineering |
| CN110374093A (en) * | 2019-07-16 | 2019-10-25 | 深圳市市政工程总公司 | High pressure-bearing crevice water earth-boring cast-in-place pile construction method |
| CN110374093B (en) * | 2019-07-16 | 2021-07-06 | 深圳市市政工程总公司 | Construction method of cast-in-situ bored pile for high-pressure-bearing fractured water stratum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106120803B (en) | 2018-04-27 |
| CN106120803A (en) | 2016-11-16 |
| CN104790412A (en) | 2015-07-22 |
| CN106193047B (en) | 2018-04-03 |
| CN104790412B (en) | 2017-03-01 |
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