CN109958123A - Steel sheet pile method for protecting support for completely decomposed sandstone foundation pit - Google Patents
Steel sheet pile method for protecting support for completely decomposed sandstone foundation pit Download PDFInfo
- Publication number
- CN109958123A CN109958123A CN201711425596.XA CN201711425596A CN109958123A CN 109958123 A CN109958123 A CN 109958123A CN 201711425596 A CN201711425596 A CN 201711425596A CN 109958123 A CN109958123 A CN 109958123A
- Authority
- CN
- China
- Prior art keywords
- hole
- foundation pit
- injected hole
- pile
- support pile
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
Landscapes
- 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)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The present invention relates to the stabilization field of side slope or slope when excavation, specially a kind of steel sheet pile method for protecting support for completely decomposed sandstone foundation pit.A kind of steel sheet pile method for protecting support for completely decomposed sandstone foundation pit, digging on the ground (1) of completely decomposed sandstone has foundation pit (11), it is characterized in that: successively implementing as follows: 1. preparation of construction；2. drawing hole construction；3. supporting pile driving construction；4. slip casting；5. support pile is pulled out.The present invention is convenient for construction, low cost, short time limit.
Description
Technical field
It is specially a kind of for completely decomposed sandstone foundation pit the present invention relates to the stabilization field of side slope or slope when excavation
Steel sheet pile method for protecting support.
Background technique
In skyscraper, build in part fall in dell generally required at hole (such as elevator) carry out supporting after can
Carry out earth excavation construction because the area cheated is generally all smaller in hole, most of support pattern all using steel sheet pile supporting or
Sloping timbering.Steel sheet pile supporting is carried out in completely decomposed sandstone foundation pit, because the impermeability of completely decomposed sandstone and sandstone rub
It is larger to wipe power, fails to form liquefaction face in pile body and soil layer contact site when supporting steel sheet pile construction, in addition sandstone frictional force compared with
Big feature steel sheet pile is more difficult to be depressed by design requirement length.
Summary of the invention
In order to overcome the drawbacks of the prior art, provide it is a kind of convenient for construction, the foundation pit fixing measure of low cost, short time limit,
The invention discloses a kind of steel sheet pile method for protecting support for completely decomposed sandstone foundation pit.
The present invention reaches goal of the invention by following technical solution:
A kind of steel sheet pile method for protecting support for completely decomposed sandstone foundation pit, digging on the ground of completely decomposed sandstone has foundation pit, special
Sign is: successively implements as follows:
1. preparation of construction: design drawing is familiar with before starting construction, on design drawing on the ground of clear completely decomposed sandstone
Every technical parameter of the every technical parameter and supporting construction cheated in hole in foundation pit and foundation pit, carries out on design drawing
Simulate unwrapping wire, determine the position of injected hole and support pile on the ground of completely decomposed sandstone, it may be assumed that two pieces of adjacent support piles it is transversal
Face constitutes isosceles trapezoid, and injected hole is located at the midpoint of the isosceles trapezoid neutrality line, pays attention to avoiding when simulating unwrapping wire completed
Basic pile foundation, according on design drawing simulate unwrapping wire position at the scene physical location release supporting construction interior outer side edges line, and
Observation conflicts with whether the position of practical pile foundation has, and then adjusts if any conflicting to not conflicting, pilot measurement elevation control point to supporting knot
Structure nearby stablizes the embedded depth that support pile is controlled when sentencing just supporting construction；
2. drawing hole construction: drill out injected hole with the augers of pilot hole stake machine on ground, the augers of pilot hole stake machine it is outer
The thickness of diameter and support pile is equal, and the progress of supporting position is strictly pressed in the position of injected hole, it may be assumed that injected hole is located at by adjacent two pieces of branch
The midpoint for the isosceles trapezoid neutrality line that fender pile cross section is constituted, the depth phase of the insertion foundation pit of the depth and support pile of injected hole
Deng；
3. supporting pile driving construction: first clearing up the sundries on support pile, and brush one layer every agent, by supporting in the outer surface of support pile
Stake along foundation pit inner sidewall block-by-block insertion foundation pit hole bottom, strict control support pile be inserted into foundation pit bottom with the length of lower portion not
It obtains and is less than design length, is i.e. the deep equality of the depth of support pile insertion foundation pit and injected hole；
4. slip casting: injecting cement slurry, the ratio of mud of cement slurry into the two sides completely decomposed sandstone of support pile by pressure grout method
No more than 0.6, top of the excessive slurry range from the bottom end of support pile to foundation pit on the outside of foundation pit (11), the range of grouting on the inside of foundation pit
From the bottom end of support pile to the bottom of foundation pit；
5. support pile is pulled out: pulling out supporting when the cement structures in foundation pit are completed and reach 70% not less than design strength
Stake, steel sheet pile is pulled out to be carried out using manipulator in the usual way, and what individual manipulators can not be pulled out takes jack cooperation to pull out
It removes.
The steel sheet pile method for protecting support for completely decomposed sandstone foundation pit, it is characterized in that:
Step 2. when, the sequence of each slip casting hole drilling is using jumping hole method, it may be assumed that by each injected hole from one end to the other end according to
Secondary number be 1#, 2# ..., (n-1) # and n#, after completing 1# injected hole bore operation, if the injected hole that drilling is completed is
It is arranged successively and is not spaced, then the bore position of next injected hole is and one, outermost injected hole interval that drilling is completed
The position of injected hole；If the hole location that the injected hole that drilling is completed is spaced there are one, the bore position of next injected hole
The as described interval hole location；
Specifically: set drilling sequences number consecutively as the 1st time, the 2nd time ... (k-1) secondary and kth time, and kth time drilling is bored
N# injected hole, then there are following relationships by n and k:
As k=1, then n=1；
When k is odd number greater than 1, if k=2i+1, i are positive integer, then n=2i；
When k is even number, if k=2j, j are positive integer, then n=2j+1；
The surface dust that drilling generates is not removed, and is filled out back in injected hole before steel sheet pile injection；
Step 3. when, carry out steel sheet pile construction by the normal construction technique of steel sheet pile after pilot hole, support pile selects Larsen steel
Sheet pile is higher by the top of foundation pit 0.5m~1m at the top of support pile to facilitate pulling out for support pile.
Step 4. when, in order to which the intensity after soil cement consolidation is not less than the intensity of former completely decomposed sandstone layer and prevents support pile
Difficulty is pulled out, slip casting content controls between 3%~5%.
Using the construction of the multiple treatment completely decomposed sandstone foundation pit of " pilot hole+stake+slip casting ", have has the present invention as follows
Beneficial effect:
1. good in economic efficiency: hole in hole is because area is smaller, such as using conventional note perfusion, SMW engineering method support pattern, needs
With large scale equipment is more, cost is high, the duration is longer, have the advantages that low cost, short time limit using the present invention；
2. strong operability: the goods and materials such as all machinery, equipment, material, personnel required for the present invention, are to be easy to rent
With and purchase.
Detailed description of the invention
Fig. 1 is schematic top plan view of the invention；
Fig. 2 is the schematic cross-sectional view of main view direction of the present invention；
Fig. 3 is the schematic cross-sectional view after slip casting on the outside of foundation pit；
Fig. 4 is the schematic cross-sectional view after slip casting on the inside of foundation pit；
Fig. 5 is using the schematic diagram for jumping each injected hole Position Number when hole method drills；
Fig. 6~Figure 16 is using the sequential schematic for jumping the drilling of hole method.
Specific embodiment
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
A kind of steel sheet pile method for protecting support for completely decomposed sandstone foundation pit, digging on the ground 1 of completely decomposed sandstone has foundation pit 11, such as
Shown in FIG. 1 to FIG. 5, successively implement as follows:
1. preparation of construction: design drawing is familiar with before starting construction, on design drawing on the ground 1 of clear completely decomposed sandstone
Foundation pit 11 and foundation pit 11 in hole in hole 12 every technical parameter and supporting construction every technical parameter, in design drawing
Simulation unwrapping wire is carried out on paper, determines the position of injected hole 2 and support pile 3 on the ground 1 of completely decomposed sandstone, it may be assumed that adjacent two pieces
The cross section of support pile 3 constitutes isosceles trapezoid, and injected hole 2 is located at the midpoint of the isosceles trapezoid neutrality line, infuses when simulating unwrapping wire
The completed basic pile foundation of meaning evacuation, according to unwrapping wire position is simulated on design drawing, physical location releases supporting construction at the scene
Interior outer side edges line, and observe and conflict with whether the position of practical pile foundation has, it then adjusts if any conflicting to not conflicting, pilot measurement absolute altitude control
System point nearby stablizes the embedded depth that support pile is controlled when sentencing just supporting construction to supporting construction；
2. drawing hole construction: injected hole 2 is drilled out with the augers of pilot hole stake machine on ground 1, the augers of pilot hole stake machine
The thickness of outer diameter and support pile 3 is equal, and the progress of supporting position is strictly pressed in the position of injected hole 2, it may be assumed that injected hole 2 is located at by adjacent
The midpoint for the isosceles trapezoid neutrality line that two pieces of 3 cross sections of support pile are constituted, the depth of injected hole 2 and the insertion foundation pit of support pile 3
11 deep equality, the deep equality of the insertion foundation pit 11 of the depth and support pile 3 of injected hole 2；
The sequence that each injected hole 2 drills, which uses, jumps hole method, is to other end number consecutively from one end by each injected hole 2
1#, 2# ..., (n-1) # and n#, after completing 2 bore operation of 1# injected hole, if the injected hole 2 that drilling is completed is successively to arrange
Column are not spaced, then the bore position of next injected hole 2 is to be spaced a slip casting with the outermost injected hole 2 that drilling is completed
The position in hole 2；If the hole location that the injected hole 2 that drilling is completed is spaced there are one, the bore position of next injected hole 2 are
For the interval hole location；
Specifically: set drilling sequences number consecutively as the 1st time, the 2nd time ... (k-1) secondary and kth time, and kth time drilling is bored
N# injected hole 2, then there are following relationships by n and k:
As k=1, then n=1；
When k is odd number greater than 1, if k=2i+1, i are positive integer, then n=2i；
When k is even number, if k=2j, j are positive integer, then n=2j+1；
It is as shown in Figure 5: by taking 11 injected holes 2 as an example, by each injected hole 2 from one end to other end number consecutively be 1#,
2# ..., 10# and 11#, drilling sequences are as follows: 1#, 3#, 2#, 5#, 4#, 7#, 6#, 9#, 8#, 11# and 10#；
1st drilling: i.e. there are n=1, first brill 1# injected hole 2 in k=1, as shown in Figure 6；
2nd drilling: i.e. there are n=3 in k=1, is to skip the hole location of 2# injected hole 2 in 1# injected hole one, 2 side interval hole location, bores
3# injected hole 2, as shown in Figure 7；
3rd drilling: i.e. there are n=2 in k=3, and totally two drillings of injected hole 2 finish 1# and 3# at this time, and there are between one between two holes
Every hole location, that is, 2# injected hole 2, bore 2# injected hole 2, as shown in Figure 8；
The 4th drilling: i.e. there are n=5 in k=4, and totally three drillings of injected hole 2 finish 1#~3# at this time, are arranged successively not between three holes
Spaced hole location is to skip the hole location of 4# injected hole 2 in outermost, that is, 3# injected hole one, 2 side interval hole location, bores 5# note
Hole 2 is starched, as shown in Figure 9；
The 5th drilling: i.e. there are n=4 in k=5, and totally four injected holes 2 drill and finish 1#~3# and 5# at this time, 3# and two hole 5# it
Between there are one be spaced hole location, that is, 4# injected hole 2, bore 4# injected hole 2, as shown in Figure 10；
6th drilling: i.e. there are n=7 in k=6, and totally five drillings of injected hole 2 finish 1#~5# at this time, are arranged successively not between five holes
Spaced hole location is to skip the hole location of 6# injected hole 2 in outermost, that is, 5# injected hole one, 2 side interval hole location, bores 7# note
Hole 2 is starched, as shown in figure 11；
7th drilling: i.e. there are n=6 in k=7, and totally six injected holes 2 drill and finish 1#~5# and 7# at this time, 5# and two hole 7# it
Between there are one be spaced hole location, that is, 6# injected hole 2, bore 6# injected hole 2, as shown in figure 12；
8th drilling: i.e. there are n=9 in k=8, and totally seven drillings of injected hole 2 finish 1#~7# at this time, are arranged successively not between seven apertures in the human head
Spaced hole location is to skip the hole location of 8# injected hole 2 in 2 side interval hole location of outermost, that is, 7# injected hole, bores 9# injected hole
2, as shown in figure 13；
9th drilling: i.e. there are n=8 in k=9, and totally eight injected holes 2 drill and finish 1#~7# and 9# at this time, 7# and two hole 9# it
Between there are one be spaced hole location, that is, 8# injected hole 2, bore 8# injected hole 2, as shown in figure 14；
10th drilling: i.e. there are n=11 in k=10, and totally nine drillings of injected hole 2 finish 1#~9# at this time, are arranged successively between nine holes
Do not have spaced hole location, the 10th bore operation skips 10# slip casting in outermost, that is, 9# injected hole one, 2 side interval hole location
The hole location in hole 2 bores 11# injected hole 2, as shown in figure 15；
11st drilling: i.e. there are n=10 in k=11, and totally ten drillings of injected hole 2 finish 1#~9# and 11# at this time, 9# and 11# two
Hole location, that is, 10# the injected hole 2 being spaced between hole there are one bores 10# injected hole 2, as shown in figure 16；
In Fig. 5~Figure 16, circle of dotted line indicates the hole location of the injected hole 2 not yet to drill, and solid line circle indicates the slip casting that drilling is completed
Hole 2；
The surface dust that drilling generates is not removed, and is filled out back in injected hole 2 before steel sheet pile injection；
3. supporting pile driving construction: carrying out supporting pile driving construction, support pile 3 by the normal construction technique of support pile after drawing hole construction
Larsen steel sheet pile is selected, first clears up the sundries on support pile 3, and brush one layer every agent, by support pile in the outer surface of support pile 3
3 are inserted into 11 bottom of foundation pit along the hole bottom of the inner sidewall block-by-block insertion foundation pit 1 of foundation pit 11, strict control support pile 3 with lower portion
Length cannot be less than design length, i.e. support pile 3 is inserted into the depth of foundation pit 11 and the deep equality of injected hole 2, the top of support pile 3
Portion is higher by 11 top 0.5m~1m of foundation pit to facilitate pulling out for support pile 3；
4. slip casting: injecting cement slurry, the water of cement slurry into the two sides completely decomposed sandstone of support pile 3 by pressure grout method afterwards
Gray scale is not more than 0.6, in order to which the intensity after cement slurry consolidation is not less than the intensity of former completely decomposed sandstone layer and prevents support pile 3 from pulling out
Except difficulty, slip casting content is controlled between 3%~5%, and the excessive slurry range in 11 outside of foundation pit is from the bottom end of support pile 3 to foundation pit 11
Top, the range of grouting of 11 inside of foundation pit is from the bottom end of support pile 3 to the bottom of foundation pit 11；
5. support pile is pulled out: pulling out supporting when the cement structures in foundation pit 11 are completed and reach 70% not less than design strength
Stake, is pulled out using manipulator in the usual way, and can not pull out if any individual 3 manipulators of support pile can take jack cooperation to pull out
It removes.
Claims (2)
1. a kind of steel sheet pile method for protecting support for completely decomposed sandstone foundation pit, digging on the ground (1) of completely decomposed sandstone has foundation pit
(11), it is characterized in that: successively implementing as follows:
1. preparation of construction: in the foundation pit (11) and foundation pit (11) on design drawing on the ground (1) of clear completely decomposed sandstone
Hole in cheat (12) every technical parameter and supporting construction every technical parameter, simulation unwrapping wire is carried out on design drawing,
Determine the position of injected hole (2) and support pile (3) on the ground (1) of completely decomposed sandstone, it may be assumed that two pieces of adjacent support piles (3)
Cross section constitutes isosceles trapezoid, and injected hole (2) is located at the midpoint of the isosceles trapezoid neutrality line；
2. drawing hole construction: being drilled out injected hole (2) on ground (1) with the augers of pilot hole stake machine, the auger of pilot hole stake machine
The outer diameter of head and the thickness of support pile (3) are equal, the depth of the insertion foundation pit (11) of the depth and support pile (3) of injected hole (2)
It is equal；
3. supporting pile driving construction: it first clears up the sundries on support pile (3), and brushes one layer every agent in the outer surface of support pile (3),
By support pile (3) along the hole bottom of inner sidewall block-by-block insertion foundation pit (1) of foundation pit (11), strict control support pile (3) is inserted into base
Hole (11) bottom cannot be less than design length, the i.e. depth and injected hole of support pile (3) insertion foundation pit (11) with the length of lower portion
(2) deep equality；
4. slip casting: injecting cement slurry, the water of cement slurry into the two sides completely decomposed sandstone of support pile (3) by pressure grout method
Gray scale is not more than 0.6, top of the excessive slurry range from the bottom end of support pile (3) to foundation pit (11) on the outside of foundation pit (11), foundation pit
(11) bottom of the range of grouting from the bottom end of support pile (3) to foundation pit (11) on the inside of；
5. support pile is pulled out: pulling out branch when the cement structures in foundation pit (11) are completed and reach 70% not less than design strength
Fender pile.
2. it is used for the steel sheet pile method for protecting support of completely decomposed sandstone foundation pit as described in claim 1, it is characterized in that:
Step 2. when, the sequence of each injected hole (2) drilling is using jumping hole method, it may be assumed that by each injected hole (2) to another from one end
One end number consecutively be 1#, 2# ..., (n-1) # and n#, after completing 1# injected hole (2) bore operation, if drilling is completed
Injected hole (2) be to be arranged successively and be not spaced, then the bore position of next injected hole (2) is and the outermost of drilling is completed
Side injected hole (2) is spaced the position of an injected hole (2)；If the hole location that the injected hole (2) that drilling is completed is spaced there are one,
Then the bore position of next injected hole (2) is the interval hole location；The surface dust that drilling generates is not removed, in steel sheet pile injection
Before fill out back in injected hole (2)；
Step 3. when, carry out steel sheet pile construction by the normal construction technique of steel sheet pile after pilot hole, support pile (3) selects Larsen
Steel sheet pile is higher by 0.5m~1m at the top of foundation pit (11) at the top of support pile (3)；
Step 4. when, slip casting content control between 3%~5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425596.XA CN109958123A (en) | 2017-12-25 | 2017-12-25 | Steel sheet pile method for protecting support for completely decomposed sandstone foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425596.XA CN109958123A (en) | 2017-12-25 | 2017-12-25 | Steel sheet pile method for protecting support for completely decomposed sandstone foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109958123A true CN109958123A (en) | 2019-07-02 |
Family
ID=67021432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711425596.XA Pending CN109958123A (en) | 2017-12-25 | 2017-12-25 | Steel sheet pile method for protecting support for completely decomposed sandstone foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109958123A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094872A (en) * | 2022-07-14 | 2022-09-23 | 中铁九桥工程有限公司 | Lock catch steel pipe pile rock-entering construction method and application thereof |
| CN116732970A (en) * | 2023-08-14 | 2023-09-12 | 上海建工集团股份有限公司 | Prefabricated thin steel pile assembled laminated underground enclosure structure and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545260A (en) * | 2008-03-27 | 2009-09-30 | 中国二十冶建设有限公司 | Method for supporting bored filling pile driven by stirring pile in foundation pit, group pit and middle pit |
| KR100929203B1 (en) * | 2009-06-29 | 2009-12-01 | 최영준 | Ground reinforcement device with protrusion members for injecting grout |
| CN101787701A (en) * | 2010-03-16 | 2010-07-28 | 标力建设集团有限公司 | Construction method for supporting pine pile in elevator shaft foundation pit |
| CN204212177U (en) * | 2014-10-17 | 2015-03-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of double doing in the hole of stand column pile cheats diaphragm wall structure |
| CN105133620A (en) * | 2015-08-19 | 2015-12-09 | 中国建筑第八工程局有限公司 | Supporting structure for pit-in-pit with local fluidal plastic sludge soil mass and construction method of supporting structure |
-
2017
- 2017-12-25 CN CN201711425596.XA patent/CN109958123A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545260A (en) * | 2008-03-27 | 2009-09-30 | 中国二十冶建设有限公司 | Method for supporting bored filling pile driven by stirring pile in foundation pit, group pit and middle pit |
| KR100929203B1 (en) * | 2009-06-29 | 2009-12-01 | 최영준 | Ground reinforcement device with protrusion members for injecting grout |
| CN101787701A (en) * | 2010-03-16 | 2010-07-28 | 标力建设集团有限公司 | Construction method for supporting pine pile in elevator shaft foundation pit |
| CN204212177U (en) * | 2014-10-17 | 2015-03-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of double doing in the hole of stand column pile cheats diaphragm wall structure |
| CN105133620A (en) * | 2015-08-19 | 2015-12-09 | 中国建筑第八工程局有限公司 | Supporting structure for pit-in-pit with local fluidal plastic sludge soil mass and construction method of supporting structure |
Non-Patent Citations (2)
| Title |
|---|
| 满宁宁等: "微型桩技术在基坑二次支护中的灵活应用", 《四川建材》 * |
| 谭正清等: "《地基与基础工程施工》", 31 May 2016 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094872A (en) * | 2022-07-14 | 2022-09-23 | 中铁九桥工程有限公司 | Lock catch steel pipe pile rock-entering construction method and application thereof |
| CN116732970A (en) * | 2023-08-14 | 2023-09-12 | 上海建工集团股份有限公司 | Prefabricated thin steel pile assembled laminated underground enclosure structure and method |
| CN116732970B (en) * | 2023-08-14 | 2023-11-07 | 上海建工集团股份有限公司 | Prefabricated thin steel pile assembled laminated underground enclosure structure and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103758134B (en) | A kind of construction method combining Double-row Piles Support system | |
| CN102605792B (en) | Multi-row mini-pile enclosing structure for blocking soil and construction process | |
| CN104806251B (en) | Subsidiary inverted excavation construction method for urban subway station under complex environment | |
| CN104532851B (en) | Recycling assembling type double-row pile and supporting method thereof | |
| CN101974905B (en) | Pile-embedding method for hollow pile and auger drill for implementing same | |
| CN105134269A (en) | Control technology for roadway surrounding rock achieving cooperative load bearing by enabling anchor cables to penetrate through sheds | |
| CN105421463B (en) | Longitudinal excavation construction method of long-span dense-support super-long deep foundation pit | |
| CN108035361A (en) | A kind of advanced support supporting construction and its construction method | |
| CN105908625A (en) | Construction method for adding frame bridge under existing railway line based on dragging method | |
| CN110017149A (en) | A kind of ledge tunneling is suitable to build underground structure and construction method | |
| CN102660955A (en) | Quick construction method for foundation pit slope support | |
| CN109958123A (en) | Steel sheet pile method for protecting support for completely decomposed sandstone foundation pit | |
| CN108343068A (en) | Composite soil nailing wall and pile-anchor retaining composite supporting construction and construction method | |
| CN109667273A (en) | A kind of construction method of deep foundation pit supporting structure | |
| CN207130739U (en) | Multiple rows of anchor cable adds the antiskid structure of row's anti-slide pile controlling major landslip | |
| CN109024562A (en) | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion | |
| CN207405635U (en) | Friction pile adds the antiskid structure that row's antiskid anchor pole administers bedding plane landslide | |
| CN104294821B (en) | Pile forming method for confined reinforced cement soil pile | |
| CN102587385A (en) | Foundation pit supporting method for sludge-exchanged and filled soft soil | |
| CN206635768U (en) | Composite soil nailing wall and pile-anchor retaining composite supporting construction | |
| CN107700508A (en) | A kind of shaped steel stirs the construction method of water spray soil curtain support pile | |
| CN218934444U (en) | High-pressure horizontal jet grouting pile tunnel reinforcing structure in frozen soil area | |
| CN201406687Y (en) | Deep foundation pit supporting structure | |
| CN104989409B (en) | A kind of full face tunneling method after vertical shaft light section pore-forming | |
| KR20140062914A (en) | Construction method for extending bulb of the ground anchor by post grouting and bulb extending apparatus being used for the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190702 |
|
| RJ01 | Rejection of invention patent application after publication |