CN106677189B - A kind of taper pile wall supporting type foundation pit supporting construction and its construction method - Google Patents
A kind of taper pile wall supporting type foundation pit supporting construction and its construction method Download PDFInfo
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- CN106677189B CN106677189B CN201611169748.XA CN201611169748A CN106677189B CN 106677189 B CN106677189 B CN 106677189B CN 201611169748 A CN201611169748 A CN 201611169748A CN 106677189 B CN106677189 B CN 106677189B
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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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Abstract
The invention discloses a kind of taper pile wall supporting type foundation pit supporting constructions, it is characterized by: taper pile wall brace type foundation pit supporting construction includes taper pile wall, supporting pile and crown beam, taper pile wall is obliquely installed, taper pile wall top portion is towards foundation pit inner inclination, in the oblique soil body into outside foundation pit in the bottom of taper pile wall, supporting pile is vertically arranged at below taper pile wall top portion, is connected at the top of supporting pile with taper pile wall top portion, supporting pile bottom is set in the soil body of bottom of foundation ditch.The present invention has the advantage that eliminating underground water puts down to support body system, excavates for pit earthwork and basement structure construction provides good plane operation space, substantially increase construction efficiency, saved cost compared with prior art；The horizontal cable for anchoring into and cheating in the outer soil body is eliminated, solves the problems, such as that anchor cable surmounts land red-line infringement.
Description
Technical field
The invention belongs to Geotechnical Engineering field, it is related to a kind of taper pile wall supporting type foundation pit in construction pit method for protecting support
Supporting construction and its construction method.
Background technique
Deep big foundation pit biggish for planar dimension and cutting depth, the domestic foundation pit supporting method used is main at present
Are as follows: inner support supporting construction, anchored pile supporting, Retaining Structure with Double-row Piles.
Inner support supporting construction and the periphery building enclosure of anchored pile supporting generally prolong foundation pit periphery and arrange vertical column
Column campshed, diaphram wall, stiffening cement cob wall or interlocking pile etc..
The inner support horizontal layout form of inner support supporting construction mainly has: grid type, to support truss, angle brace truss, side
Truss, annular brace etc..Supporting member is divided into horizontal shore and vertical support column, and column setting crosses node position in Liang Liang
It sets, material is steel pipe or fashioned iron lattice, and each column divides into a pile base, is primarily subjected to vertical load, while being also subjected to support
The part of horizontal load being transmitted on column.Column spacing is generally 8~12 meters, for planar dimension greater than 100x100 meters
Deep big foundation pit, hole inner column can reach tens of even up to a hundred.In proposed basement construction, column is needed across basement
Bottom plate and floor.
The anchorage cable anchoring of anchored pile supporting is locked in the stabilization soil body outside foundation pit and is set to building enclosure surface
On waist rail, anchor cable overall length is located in the soil body, and freedom length is not less than 5 meters, and anchoring section is according to soil condition and design value of thrust
Size be not quite similar, common anchor cable length be 15~40 meters.
The double-row pile of Retaining Structure with Double-row Piles passes through the crown beam that top is arranged in by front two rows piling wall and coupling beam is connected as
Whole, front two rows piling wall and inter-pile soil collective effect form " gate-type " soil-baffling structure.
There are the following problems for technology at present:
1. for inner support supporting construction:
Since a large amount of columns being distributed in foundation pit, when foundation pit carries out every layer of earth excavation, excavator operation and earthwork outward transport
When need to avoid column, shoveling work efficiency is greatly reduced, in addition the synergistic effects such as weather and appearance of the city control, so that pit earthwork is opened
Degree of digging into is slow, to extend foundation pit using time and overall duration, adversely affects to deep pit monitor, project progress.
Since there are a large amount of supporting members and columns in foundation pit, so that working space office when proposed basement structure construction
Promote, work efficiency reduces.
It since column spacing is smaller, and is steel construction, various equipment are easy to cause to damage to it during earth excavation, from
And influence deep pit monitor.
A large amount of columns are needed across basement bottom board, although column, which is worn, is respectively provided with steel plate for sealing water at bottom plate, due to underground
The waterproof layer of room bottom plate is worn out by column, and waterproof slab effect is difficult to ensure.
Since each column has pile foundation, the cost of inner support support engineering is significantly increased, especially in soft clay area.
2. for anchored pile supporting:
Anchor cable overall length in pile-anchor retaining is arranged in the soil body other than foundation pit, often surmounts land red-line, to outside red line
Adjacent engineering construction forms obstacle, or even with invading opposite field property rights.
3. for Retaining Structure with Double-row Piles:
Although Retaining Structure with Double-row Piles significantly enhances the rigidity of building enclosure by " gate-type " structure, cantilever branch is increased
Shield height, eliminate the adverse effect of inner support or anchor cable, but remain as cantilever beam since it accepts mechanism, when foundation depth compared with
When depth or poor soil property, lateral pressure is very big, then the diameter of double-row pile needs very big, and cost is very high, and is difficult to strict control
Deformation.
Further, since setting front two rows stake, larger to plane site demand, when excavation face when construction of structures close to being difficult to
Implement.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of taper pile wall brace type foundation pit supporting constructions
And its construction method.
The present invention is achieved by the following technical solutions:
A kind of taper pile wall supporting type foundation pit supporting construction, it is characterised in that: taper pile wall supporting type foundation pit supporting construction includes
Taper pile wall, supporting pile and crown beam, taper pile wall are obliquely installed, and towards foundation pit inner inclination, the bottom of taper pile wall is oblique in taper pile wall top portion
Into the soil body entered outside foundation pit, supporting pile is vertically arranged at below taper pile wall top portion, supporting pile top and taper pile wall top portion phase
Even, supporting pile bottom is set in the soil body of bottom of foundation ditch.
As further improvement of these options, the continuous wall that taper pile wall is made of the taper pile that is mutually twisted that overlapped,
Taper pile includes meat or fish stake and plain stake, and wherein meat or fish stake configuration reinforcement cage, is reinforced concrete pile, and plain stake does not configure steel reinforcement cage, mixed for element
Solidifying soil stake.
As further improvement of these options, the length of meat or fish stake is greater than the length of plain stake, and meat or fish passes through latent obliquely downwards
It in slip-crack surface, anchors into the stable soil body below of Foundation Pit bottom, plain stake is set in the interval between meat or fish stake, is engaged and is taken with meat or fish stake
It connects.
As further improvement of these options, taper pile coping is provided with crown beam, crown beam connects all meat or fish stakes
With the top of plain stake, supporting pile is connect at crown beam with the meat or fish stake in taper pile wall.
As further improvement of these options, it is additionally provided with the second taper pile wall below taper pile wall, the second taper pile wall
Structure is identical as the structure of taper pile wall, and waist rail, the waist connection of waist rail and supporting pile is arranged in the second taper pile coping.For depth
Biggish foundation pit is spent, the scheme of multilayer taper pile wall supporting can be used.
The present invention also provides a kind of construction methods of taper pile wall supporting type foundation pit supporting construction, it is characterised in that step is such as
Under:
Step 1: forming taper pile wall, and supporting pile of constructing simultaneously in natural ground construction meat or fish stake and plain stake；
Step 2: constructing and being preced at the top of meat or fish stake, plain stake and supporting pile after to meat or fish stake, plain stake and bearing pile driving construction
Supporting pile and taper pile wall are connected as entirety by beam；
Step 3: whole excavation pit all completes to bottom, pattern foundation pit supporting structure and earth excavation is cheated, civil construction unit is transferred
Carry out basement structure construction.
The present invention also provides the construction methods of Double-layer oblique piling wall supporting type foundation pit supporting construction, it is characterised in that step is such as
Under:
Step 1: forming taper pile wall, and supporting pile of constructing in natural ground construction meat or fish stake and plain stake, while constructing second tiltedly
Piling wall sets bear to staying between natural ground in the stake top of meat or fish stake and the plain stake of the second taper pile wall；
Step 2: after to step 1 construction, at the top of meat or fish stake, plain stake and supporting pile construction crown beam by supporting pile and
Taper pile wall is connected as entirety；
Step 3: excavation pit, to intermediate excavation face, the height of intermediate excavation face is flushed with the position height of waist rail, is applied
Second taper pile wall and supporting pile are connected as entirety by work waist rail；
Step 4: being excavated to foundation pit bottom, pattern foundation pit supporting structure and earth excavation all complete, and transfer civil construction unit and carry out ground
Lower cell structure construction.
The present invention has the advantage that the column present invention eliminates level to support and below compared with prior art, only
One row's Vertical Pile and taper pile are set in margin of foundation pit, taper pile pile body inclining enters in the outer soil body of foundation pit, is not take up earth's surface place, nothing
Horizontally-supported and anchor cable excavates for pit earthwork and basement structure construction provides good plane operation space, mentions significantly
High construction efficiency shortens the duration to reduce foundation pit exposure duration.The size that taper pile enters outside foundation pit is significantly smaller than anchor
Rope solves the problems, such as that anchor cable surmounts land red-line infringement.The present invention will act at the level in traditional building enclosure by taper pile
Soil pressure load is largely changed into vertical gravity laod, then is undertaken by vertical supporting pile, changes the stress of building enclosure
Mode, effect are better than conventional boom-mounted double-row pile, are significantly reduced building enclosure sectional dimension, saving construction cost.
Detailed description of the invention
Fig. 1 is the cross-sectional view that the present invention is used for single layer taper pile wall.
Fig. 2 is the cross-sectional view that the present invention is used for two layers of taper pile wall.
Fig. 3 is top view of the invention.
Fig. 4 present invention is used for the construction process schematic diagram one of single layer taper pile wall.
Fig. 5 present invention is used for the construction process schematic diagram two of single layer taper pile wall.
Fig. 6 present invention is used for the construction process schematic diagram one of two layers of taper pile wall.
Fig. 7 present invention is used for the construction process schematic diagram two of two layers of taper pile wall.
Fig. 8 present invention is used for the construction process schematic diagram three of two layers of taper pile wall.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
2 supporting type foundation pit supporting construction of single layer taper pile wall, it is characterised in that: 2 supporting type foundation pit supporting construction packet of taper pile wall
Taper pile wall 2, supporting pile 3 and crown beam 4 are included, taper pile wall 2 is obliquely installed, towards foundation pit inner inclination, taper pile wall 2 at the top of taper pile wall 2
The oblique soil body into outside foundation pit in bottom in, supporting pile 3 is vertically arranged at the top of taper pile wall 2 lower section, 3 top of supporting pile with tiltedly
It is connected at the top of piling wall 2,3 bottom of supporting pile is set in the soil body at 6, foundation pit bottom.The tilt angle of usual taper pile wall is 10~30
Degree, depending on the depth profile of soil property situation and foundation pit.
Widely distributed support construction is arranged in common foundation pit supporting construction needs in foundation pit, makes the space quilt in foundation pit
Segmentation is occupied, construction efficiency is substantially reduced；Common anchored pile supporting, the limitation that under tension requires, anchor cable are met mostly
Face the problem of stretching out land red-line 7 and not being available；Common Retaining Structure with Double-row Piles need to meet certain front and rear row away from, because
And more plane site is occupied, often do not have execution conditions when periphery place is smaller.
By this programme, taper pile wall 2 and supporting pile 3 only are set at the edge of foundation pit, by the level of the foundation pit periphery soil body
The pressure conversion in direction is the power of vertical direction, and is transmitted to 6, foundation pit bottom by supporting pile 3；The inclination insertion foundation pit of taper pile wall 2
Outside, earth's surface place will not be occupied, without horizontally-supported and anchor cable, is excavated for pit earthwork and basement structure construction provides well
Plane operation space, substantially increase construction efficiency, to reduce foundation pit exposure duration, shorten the duration；Taper pile enters
Size outside foundation pit is significantly smaller than anchor cable, solves the problems, such as that anchor cable surmounts 7 infringement of land red-line.The present invention will be acted on by taper pile
Horizontal earth pressure load in traditional building enclosure is largely changed into vertical gravity laod, then is held by vertical supporting pile 3
Load, changes the force modes of building enclosure, and effect is better than conventional boom-mounted double-row pile, is significantly reduced building enclosure section ruler
It is very little, saving construction cost.
The continuous wall that taper pile wall 2 is made of the taper pile that is mutually twisted that overlapped, taper pile include meat or fish stake 21 and plain stake 22, wherein
21 configuration reinforcement cage of meat or fish stake is reinforced concrete pile, and plain stake 22 does not configure steel reinforcement cage, is plain concrete pile.
The length of meat or fish stake 21 is greater than the length of plain stake 22, and meat or fish passes through Potential failure surface 1 obliquely downwards, anchor into foundation pit bottom 6 with
Under the stabilization soil body in, plain stake 22 is set in the interval between meat or fish stake 21, is engaged overlap joint with meat or fish stake 21.Meat or fish stake 21 is main
Load-carrying members, plain stake 22 are soil-baffling structure, and plain stake 22 fills up the gap between meat or fish stake 21 to form continuous wall, will be outside foundation pit
The load transmission of the soil body is to meat or fish stake 21；Plain stake 22 only undertakes the effect of earth-retaining, therefore it does not need to anchor into the stable soil body, only needs
It is embedded to a small amount of depth in 6 or less foundation pit bottom.
The top of taper pile wall 2 is provided with crown beam 4, crown beam 4 connects the top of all meat or fish stakes 21 and plain stake 22, supporting pile 3
It is connect at crown beam 4 with the meat or fish stake 21 in taper pile wall 2.Crown beam 4 is generally flush to the setting of nature ground 5, will be supported by crown beam 4
Stake 3 is connected as one with meat or fish stake 21, be can be good at transmitting the extruding force that taper pile wall 2 is subject to, is made entire foundation pit supporting construction more
Add reliable and stable.
2 wall thickness 800 of taper pile wall, using interlocking pile technique, 3 diameter 800 of supporting pile, using cast-in-situ bored pile, referring to Fig. 1.
Meat or fish stake 21 and plain 22 diameter of stake are 800mm, mutually overlap joint 200mm.Meat or fish stake 21 is reinforced concrete pile, and sectional reinforcement is 16
20 worm steels, the long 15m of stake.Plain stake 22 is plain concrete pile, does not configure steel reinforcement cage, the long 10m of stake.Supporting pile 3 is mixed for reinforcing bar
Solidifying soil stake, sectional reinforcement are 12 20 worm steels, the long 15m of stake, stake spacing 7.2m.Meat or fish stake 21 and supporting pile 3 pass through setting
Crown beam 4 at natural ground 5 connects.The elongated setting of crown beam 4 is reinforced beam, sectional dimension 2000x600.
Embodiment 2
The construction method of 2 supporting type foundation pit supporting construction of taper pile wall in embodiment 1, it is characterised in that steps are as follows:
Step 1: forming taper pile wall 2, and supporting pile 3 of constructing simultaneously in the construction meat or fish stake 21 of natural ground 5 and plain stake 22；
Step 2: after constructing to meat or fish stake 21, plain stake 22 and supporting pile 3, in meat or fish stake 21, plain stake 22 and supporting pile 3
Supporting pile 3 and taper pile wall 2 are connected as entirety by top construction crown beam 4；
Step 3: whole excavation pit bottom 6, pattern foundation pit supporting structure and earth excavation all complete, transfer civil construction unit into
Row basement structure construction.
Embodiment 3
2 supporting type foundation pit supporting construction of Double-layer oblique piling wall is additionally provided with below taper pile wall 2 on the basis of embodiment 1
The structure of second taper pile wall 23, the second taper pile wall 23 is identical as the structure of taper pile wall 2, and waist rail is arranged in the top of the second taper pile wall 23
8, waist rail 8 is connect with the waist of supporting pile 3.The scheme of 2 supporting of multilayer taper pile wall can be used in foundation pit biggish for depth.With
The depth of foundation pit increase, surrounding soil needs stronger supporting construction to provide supporting force, and the structure of single layer taper pile wall 2 can not
Enough supporting forces are provided, we use the structure of multilayer taper pile wall 2, are layered supporting, then pass through waist rail 8 and support column for multilayer
Taper pile wall 2 connects into the support frame of an entirety, by the soil body fixed bearing around foundation pit.Each layer of taper pile wall 2 not only props up
The weight of the soil body above it is held, while will also play the role of anchoring, entire supporting construction is firmly fixed on foundation pit week
In the soil body enclosed, prevent it from toppling.
As shown in Fig. 2, proposed main structure is two layers, excavation of foundation pit depth 11m, 120 meters of plane span of underground in foundation pit,
Deformation control of foundation pit is required stringenter.Pattern foundation pit supporting structure overall plan uses 2 supporting type foundation pit supporting construction of Double-layer oblique piling wall.
Two layers of taper pile wall 2, wall thickness 900, using interlocking pile technique, 3 diameter 1000 of supporting pile, using brill are set from top to bottom
Hole pouring pile, referring to fig. 2.Meat or fish stake 21 and plain 22 diameter of stake are 900mm, mutually overlap joint 200mm.Meat or fish stake 21 is armored concrete
Stake, sectional reinforcement are 16 22 worm steels, and 21 long 19m of meat or fish stake of taper pile wall 2, meat or fish stake 21 of the second taper pile wall 23 are long
15m.Plain stake 22 is plain concrete pile, does not configure steel reinforcement cage, the long 6.5m of stake of the plain stake 22 of taper pile wall 2, the second taper pile wall 23
The long 7.5m of stake of plain stake 22.Supporting pile 3 be reinforced concrete pile, sectional reinforcement be 14 22 worm steels, the long 20m of stake,
Away from 7m.The meat or fish stake 21 of taper pile wall 2 passes through the crown beam 4 being arranged at nature ground 5 with supporting pile 3 and connect, the second taper pile wall 23
Meat or fish stake 21 is connect with supporting pile 3 by the way that the waist rail 8 of intermediate excavation face 9 is arranged in.Crown beam 4 and waist rail 8 are elongated setting, are
Reinforced beam, 4 sectional dimension of crown beam are 2000x600, and 8 sectional dimension of waist rail is 1500x500.
Embodiment 4
The construction method of 2 supporting type foundation pit supporting construction of taper pile wall in embodiment 3, steps are as follows:
Step 1: forming taper pile wall 2, and supporting pile 3 of constructing in the construction meat or fish stake 21 of natural ground 5 and plain stake 22, apply simultaneously
The second taper pile of work wall 23 sets bear 12 to staying between natural ground 5 in the stake top of meat or fish stake 21 and the plain stake 22 of the second taper pile wall 23；
Step 2: will be propped up after to step 1 construction in the top construction crown beam 4 of meat or fish stake 21, plain stake 22 and supporting pile 3
It holds stake 3 and taper pile wall 2 is connected as entirety；
Step 3: excavation pit, to intermediate excavation face 9, the height of intermediate excavation face 9 and the position height of waist rail 8 are neat
Flat, the second taper pile wall 23 is connected as entirety with supporting pile 3 by waist rail 8 of constructing；
Step 4: being excavated to foundation pit bottom 6, pattern foundation pit supporting structure and earth excavation all complete, and transfer civil construction unit and carry out
Basement structure construction.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (5)
1. a kind of taper pile wall supporting type foundation pit supporting construction, it is characterised in that: the taper pile wall supporting type foundation pit supporting construction packet
Include taper pile wall, supporting pile and crown beam, the taper pile wall is obliquely installed, taper pile wall top portion towards foundation pit inner inclination, taper pile wall
In the oblique soil body into outside foundation pit in bottom, the supporting pile is vertically arranged at below taper pile wall top portion, at the top of supporting pile and tiltedly
It is connected at the top of piling wall, supporting pile bottom is set in the soil body of bottom of foundation ditch；The taper pile wall is by the taper pile that is mutually twisted that overlapped
The continuous wall of composition, the taper pile include meat or fish stake and plain stake, and wherein meat or fish stake configuration reinforcement cage, is reinforced concrete pile, plain stake
Steel reinforcement cage is not configured, is plain concrete pile；The length of the meat or fish stake is greater than the length of the plain stake, and meat or fish stake passes through latent obliquely downwards
It in slip-crack surface, anchors into the stable soil body below of Foundation Pit bottom, the element stake is set in the interval between meat or fish stake, is stung with meat or fish stake
Overlap joint is closed, the tilt angle of the taper pile wall is 10 ° ~ 30 °.
2. a kind of taper pile wall supporting type foundation pit supporting construction as described in claim 1, it is characterised in that: set in taper pile coping
It is equipped with crown beam, the crown beam connects the top of all meat or fish stakes and plain stake, and the meat or fish stake in the supporting pile and taper pile wall is in the hat
Liang Chu connection.
3. a kind of taper pile wall supporting type foundation pit supporting construction as claimed in claim 2, it is characterised in that: below the taper pile wall also
It is provided with the second taper pile wall, the structure of the second taper pile wall is identical as the structure of taper pile wall, the second taper pile coping
Waist rail, the waist connection of the waist rail and supporting pile are set.
4. the construction method of taper pile wall supporting type foundation pit supporting construction described in a kind of claim 1, it is characterised in that steps are as follows:
Step 1: forming taper pile wall, and supporting pile of constructing simultaneously in natural ground construction meat or fish stake and plain stake；
Step 2: constructing crown beam at the top of meat or fish stake, plain stake and supporting pile will after to meat or fish stake, plain stake and bearing pile driving construction
Supporting pile and taper pile wall are connected as entirety；
Step 3: whole excavation pit all completes to bottom, pattern foundation pit supporting structure and earth excavation is cheated, transfers civil construction unit and carry out
Basement structure construction.
5. the construction method of taper pile wall supporting type foundation pit supporting construction described in a kind of claim 4, it is characterised in that steps are as follows:
Step 1: forming taper pile wall, and supporting pile of constructing in natural ground construction meat or fish stake and plain stake, while the second taper pile of constructing
Wall sets bear to staying between natural ground in the stake top of meat or fish stake and the plain stake of the second taper pile wall；
Step 2: after to step 1 construction, at the top of meat or fish stake, plain stake and supporting pile, construction crown beam is by supporting pile and taper pile
Wall is connected as entirety；
Step 3: excavation pit, to intermediate excavation face, the height of the intermediate excavation face is flushed with the position height of waist rail, is applied
Second taper pile wall and supporting pile are connected as entirety by work waist rail；
Step 4: being excavated to foundation pit bottom, pattern foundation pit supporting structure and earth excavation all complete, and transfer civil construction unit and carry out basement
Structure construction.
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| CN107574825A (en) * | 2017-07-27 | 2018-01-12 | 天津大学 | Foundation pit supporting method and raked pile |
| CN107630456A (en) * | 2017-07-27 | 2018-01-26 | 天津大学 | Foundation pit supporting method and raked pile |
| CN108301417B (en) * | 2018-01-04 | 2019-08-30 | 深圳市岩土综合勘察设计有限公司 | Using the foundation pit supporting construction and construction method of mini pile |
| CN109235448A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit supporting method |
| CN109356169B (en) * | 2018-12-03 | 2024-04-19 | 中国建筑一局(集团)有限公司 | Foundation pit row pile supporting system and construction method thereof |
| CN109577346A (en) * | 2019-01-02 | 2019-04-05 | 深圳市前海世茂投资管理有限公司 | A kind of foundation pit supporting system and its method of construction |
| CN112779853A (en) * | 2019-11-07 | 2021-05-11 | 中冶京诚工程技术有限公司 | Abutment and design and construction method thereof |
| CN111321740A (en) * | 2020-04-24 | 2020-06-23 | 上海勘察设计研究院(集团)有限公司 | Inclined pile prestress applying device and construction method thereof |
| CN111705813A (en) * | 2020-07-24 | 2020-09-25 | 北京中岩大地科技股份有限公司 | Combined type inclined pile anchor rod foundation pit supporting system and supporting method |
| CN113089683A (en) * | 2021-03-24 | 2021-07-09 | 浙江省建筑设计研究院 | Inclined pile supporting structure and construction method |
| CN113529730A (en) * | 2021-07-28 | 2021-10-22 | 中建八局天津建设工程有限公司 | Construction method of foundation pit |
| CN115262573A (en) * | 2022-07-13 | 2022-11-01 | 上海勘察设计研究院(集团)有限公司 | Combined type multilayer vertical self-stabilizing enclosure structure and construction method |
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