CN110318402A - A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting - Google Patents
A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting Download PDFInfo
- Publication number
- CN110318402A CN110318402A CN201910586088.2A CN201910586088A CN110318402A CN 110318402 A CN110318402 A CN 110318402A CN 201910586088 A CN201910586088 A CN 201910586088A CN 110318402 A CN110318402 A CN 110318402A
- Authority
- CN
- China
- Prior art keywords
- diagonal brace
- bottom plate
- support
- construction
- supporting
- 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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
Abstract
The present invention provides a kind of deep basal pit back-pressure soil and adds diagonal brace form construction method for supporting, includes the following steps: S1, the bottom plate on the inside of construction lattice column engineering pile, fashioned iron force transfer key is arranged between the bottom plate；S2, construct lattice column engineering stake top pile pier and lattice column engineering pile between linking beam；S3, it is supportted in a structure of an essay for lattice column engineering pile and beam；S4, with one or three sections Liang Weiyi, digging machine station cuts the earth on bottom plate, is unearthed；Bottom plate under S5, construction support, changes diagonal brace on the bottom plate after reaching intensity；S6, in stabilization zone setting back-pressure soil, set diagonal brace described in 4-5 root as a construction flowing water section, one by one cross construction.The present invention is directed to the construction in special deep & thick silt matter soil region, the form combined using slope+support, diagonal brace is arranged to support on bottom plate, back-pressure soil is arranged in stabilization zone, reduce subsequent construction difficulty, diagonal brace support is solved in be highly prone to waterlogging disaster on negative layer flooring, influence the progress of project the problem of and saves cost.
Description
Technical field
The present invention relates to technical field of building construction, and in particular to a kind of deep basal pit back-pressure soil adds diagonal brace form supporting construction
Method.
Background technique
In deep & thick silt matter soil area, pattern foundation pit supporting structure generally uses campshed to add inner support or big slope, campshed Jia Neizhi
The mode of support is suitable for place is more narrow and periphery adjacent buildings are more situation, and construction period is longer, support replacement trouble and
Cost is relatively expensive；And to be suitable for place more broad for the form of big slope, the case where no periphery adjacent buildings, though construction letter
Just but it is higher for place area requirement.
It being limited by surrounding enviroment condition and geological conditions, diagonal brace support may result in subsequent construction difficulty on flooring,
And working face be limited it is larger, and diagonal brace support in being highly prone to rainy season, waterlogging disaster on negative layer flooring, influence the progress of project.
Due to the limitation of foundation pit surrounding environment condition and geological conditions, many engineerings are brought to the construction of city deep big foundation pit
Engineering cost is greatly lowered in order to ensure engineering safety, quality and progress in problem, in deep & thick silt matter soil region, for field
Which kind of arrangement and method for construction ground surrounding surrounding building uses actually, lacks the example of comparatively perfect at present apart from different situation,
Therefore, the engineering construction method for designing a kind of optimization is particularly important.
Summary of the invention
The object of the present invention is to provide a kind of deep basal pit back-pressure soil to add diagonal brace form construction method for supporting, in special deep silt
Shale soil region, which lacks, designs such method under the status of reasonable construction method, solves the current area special deep & thick silt Zhi Tu
Domain lacks the status of reasonable construction method；The purpose for realizing simultaneously and saving cost, accelerate construction.
To achieve the above object, the technical solution used in the present invention is:
A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting, applied to building for special deep & thick silt matter soil region
Construction is built, applied between the bottom working procedure and main structure construction process of architectural engineering, is included the following steps:
Bottom plate on the inside of S1, construction lattice column, is arranged fashioned iron force transfer key between the bottom plate；
S2, construct lattice column engineering stake top pile pier and lattice column engineering pile between linking beam；
S3, it is supportted in a structure of an essay for lattice column engineering pile and beam；
S4, with one or three sections Liang Weiyi, digging machine station cuts the earth on bottom plate, is unearthed；
Bottom plate under S5, construction support, changes diagonal brace on the bottom plate after reaching intensity；
S6, in stabilization zone, setting back-pressure is native, sets diagonal brace described in 4-5 root as a construction flowing water section, flowing water is applied one by one
Work.
Preferably, in the step S1, the base plate thickness is not less than 600mm, the fashioned iron force transfer key and the bottom plate
Fit closely setting.
Preferably, in the step S3, support carriers are set on beam and floor, the support is in the support carriers
It is arranged in parallel with the beam.
Preferably, in the step S4 and S5, back-pressure soil extremely hole bottom and immediately construction cushion coat and the bottom plate are excavated, it is described
It is backfilled between bottom plate and the lattice column using 450mm element concrete, uses sand between the bottom plate other end and the lattice column are high
Earthen backfill is closely knit.
Preferably, in the step S5, the diagonal brace other end passes through straight with the pile pier and the lattice column engineering pile
It connects connected.
Preferably, described to change during diagonal brace in the step S5, it, can after support replacement pier reaches the 80% of design strength
Remove first of support and support carriers and column.
Preferably, between the step S5-S6, in, during constructing back-pressure platform, should simultaneously coordinative construction floor and
Reinforced concrete support simultaneously pours.
Preferably, in the step S6, construction direction is to turn left from the right side.
Compared with prior art, the mode of the technical program combination counter-pressure and diagonal brace, has the advantages that
(1) effectively it is directed to the construction in special deep & thick silt matter soil region
The form combined using slope+support, is not set to support, and diagonal brace is arranged on fender post side, and diagonal brace is supportted in basement
On bottom plate, back-pressure soil is arranged in stabilization zone, excavates after diagonal brace reaches support replacement condition, can accelerate the bottom of central island regions in this way
Plate construction, and can make full use of original ground back-pressure soil reform stabilization of soil in passive area certainly, effectively be directed to special deep & thick silt
The construction in matter soil region.
(2) overcome environmental condition and geological conditions bring problem
Construction method of the invention supports script diagonal brace is optimized for diagonal brace in bottom plate on flooring, reduces subsequent construction hardly possible
Degree is not limited by working face is excessive, is solved diagonal brace support in being highly prone to rainy season, waterlogging disaster on negative layer flooring, is influenced item
The problem of purpose progress.
(3) cost is saved, construction is accelerated
Construction method of the invention, base plate strength is big, and digging machine is directly operated on bottom plate, and simple and easy, diagonal brace reaches
Excavate after to support replacement condition, shortens in the teardown phase duration；The construction method for combining and taking full advantage of back-pressure soil again, saves
Cost.
Detailed description of the invention
Fig. 1 is that deep basal pit back-pressure soil of the present invention adds diagonal brace form construction method for supporting application schematic diagram；
Fig. 2 is that invention foundation pit back-pressure soil adds diagonal brace and floor structure in diagonal brace form construction method for supporting to illustrate
Scheme (movable end)；
Fig. 3 is the connection schematic diagram that foundation pit back-pressure soil of the present invention adds diagonal brace form construction method for supporting support and floor；
Fig. 4 is that foundation pit back-pressure soil of the present invention adds the practical application of diagonal brace and bottom plate in diagonal brace form construction method for supporting to illustrate
Figure；
In figure: 1, lattice column engineering pile, 2, fashioned iron force transfer key, 3, pile pier, 4, beam, 5, support, 6, bottom plate, 7, stabilization zone, 8,
Back-pressure soil, 9, diagonal brace, 10, bed course, 11, floor, 12, support support, 13, reinforced concrete support, 91, vertical muscle, 92, stirrup, 93, curved
Muscle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Firstly, the application background of technical solution of the present invention is for environmental condition compared with severe, difficulty of construction is biggish deep
Silt soil region, deep basal pit back-pressure soil provided by the invention adds diagonal brace form construction method for supporting, applied to architectural engineering
Between bottom working procedure and main structure construction process, include the following steps:
Bottom plate 6 on the inside of S1, construction lattice column engineering pile 1, is arranged fashioned iron force transfer key 2 between the bottom plate 6；
The linking beam 4 between pile pier 3 and lattice column engineering pile 1 that S2, construction lattice column engineering pile 1 push up；
S3,5 are supportted in a structure of an essay for lattice column engineering pile 1 and beam 4；
S4, with one or three beams 4 for a section, digging machine station cuts the earth on bottom plate, unearthed；
Bottom plate 6 under S5, construction support 5, changes diagonal brace 9 on the bottom plate 6 after reaching intensity；
S6, back-pressure soil 8 is set in stabilization zone 7, setting diagonal brace 9 described in 4-5 root is a construction flowing water section, one by one flowing water
Construction.
It can be seen that the technical program from above 6 steps and do not use traditional campshed+inner support or big slope,
This is mainly due to both traditional construction methods to be not suitable for site condition, and the technical program is directed to four axis periphery of construction site
Building is apart from situation: having adjacent closer building, designs in the case where also having adjacent farther away building, for synthesis
As in such a way that slope+support combines, but still there is optimization in concrete operations, is carried out below with reference to specific steps and attached drawing
Explanation.
Deep basal pit back-pressure soil of the present invention adds diagonal brace form construction method for supporting application schematic diagram and combines Fig. 2 refering to fig. 1
Diagonal brace 9 of the present invention and 6 structural schematic diagram of bottom plate (movable end), the upper end of lattice column engineering pile 1 are equipped with pile pier 3, and bottom plate 6 is located at lattice
The inside of structure column engineering pile 1, in construction method, S1 step is the bottom plate 6 of 1 inside of construction lattice column engineering pile, at the bottom
Fashioned iron force transfer key 2 is set between plate 6, and priority processing bottom plate 6 and enclosing covers, and so that bottom plate 6 is had the condition for driving support power transmission, and can make digging machine
It works on it, to guarantee that bottom plate 6 has enough intensity, 6 thickness of bottom plate should be not less than 600mm, fashioned iron force transfer key 2 and bottom plate 6
Fit closely setting, it is ensured that the stability of its work.
S2 step is the linking beam 4 between pile pier 3 and lattice column engineering pile 1 that construction lattice column engineering pile 1 pushes up, as oblique
The fulcrum of support is to realize the subsequent step being directly connected with diagonal brace 9.
With continued reference to Fig. 2, as shown, fashioned iron force transfer key 2 is arranged in the bottom of bottom plate 6 and is spaced setting, fashioned iron power transmission
Key 2 is fitted closely with bottom plate 6, it is ensured that the connection type of the stability of its power transmission function, diagonal brace 9 of the invention and bottom plate 6 is as schemed
Shown, in practical applications, diagonal brace 9 and the fixed form of bottom plate 6 are particularly important, this be associated with the stability of construction with can
By property, diagonal brace 9 is completely embedded into bottom plate 6, and is fixed by vertical muscle 91 in built-in end Hard link, and diagonal brace 9 just starts in bottom plate 6
Fixed using a succession of stirrup 92, stirrup 92 extends to 9 end of diagonal brace outside bottom plate 6, finally, reusing a curved muscle
93 assist, and realize the connection of diagonal brace 9 and bottom plate 6.
Refering to Fig. 3 and Fig. 1 is combined, to support 5 in a structure of an essay for lattice column engineering pile 1 and beam 4 in S3 step, at this time by support 5
To the effect of support, in this step it is ensured that support 5 reaches enough intensity with associated components, Fig. 3 shows support 5 and floor 11
Setting support support 12,5 framves of the support are flat with the beam 4 on the support support 12 on the schematic diagram of connection, beam 4 and floor 11
Row setting.
Refering to Fig. 4, foundation pit back-pressure soil of the invention adds the reality of diagonal brace and bottom plate in diagonal brace form construction method for supporting to answer
With schematic diagram, in S4 step, with one or three beams 4 for a section, digging machine station is cut the earth on bottom plate 6, is unearthed, the bottom of due to
6 thickness 600mm or more of plate, can satisfy wheel pressure request, and be water operation substantially, will not occupy bottom plate for a long time, and S5 step is to apply
The lower bottom plate 6 of work support 5 reaches and changes diagonal brace 9 after intensity on the bottom plate 6, and in step S4 and S5, excavation back-pressure soil is to cheating bottom
And construction cushion coat 10 and the bottom plate 6 immediately, it is backfilled between the bottom plate 6 and the lattice column 1 using 450mm element concrete, it is described
Between 6 other end of bottom plate and the lattice column engineering pile 1 using sand backfill it is closely knit, in step S5,9 other end of diagonal brace by with
The pile pier 3 is connected directly with the lattice column engineering pile 1；Described to change during diagonal brace 9 in the step S5, support replacement pier reaches
To after the 80% of design strength, first of support and support support and column can be removed, final realize is turned by the application form of Fig. 1
Become diagonal brace on bottom plate 6.
Step S6 is that back-pressure soil 8 is arranged in stabilization zone 7, and setting diagonal brace 9 described in 4-5 root is a construction flowing water section, by
One cross construction.This process is to repeat constructing operation, but during construct back-pressure platform, should at the same coordinative construction floor 11 and
Reinforced concrete support 13 simultaneously pours, and further, in step S6, construction direction should be turns left from the right side.Technical solution of the present invention is not set
To support, and diagonal brace 9 is set on stake side, diagonal brace 9 supports on basement bottom board 6, and back-pressure soil 8 is arranged in stabilization zone 7, reaches in diagonal brace 9
Excavate after support replacement condition, the bottom plate 6 that can accelerate central island regions in this way is constructed, and original ground back-pressure can be made full use of native
8 reform stabilization of soil in passive area certainly, achieve the purpose that save cost, accelerate construction, secondly, the present invention changes conventional drilled pile
Add concrete inner support method, using back-pressure soil 8 plus the coefficient method of 9 supporting of diagonal brace.After the back-pressure soil for carrying out deep basal pit,
Using 9 supporting of diagonal brace, to resist active earth pressure caused by higher buildings body, sliding is avoided the occurrence of, topples and deforms, improved
Overall stability.
It is to be illustrated to preferable implementation of the invention, but the present invention is not limited to the embodiment above, to the greatest extent
Invention is explained in detail referring to embodiment for pipe, for those skilled in the art smart without prejudice to the present invention
Various equivalent deformation or replacement, such as refluxing unit type and quantity, exhaust pipe connection side can be also made under the premise of mind
Formula etc. these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (8)
1. a kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting, applied to the bottom working procedure of architectural engineering and master
Between body structure construction process, which comprises the steps of:
Bottom plate on the inside of S1, construction lattice column engineering pile, is arranged fashioned iron force transfer key between the bottom plate；
S2, construct lattice column engineering stake top pile pier and lattice column engineering pile between linking beam；
S3, it is supportted in a structure of an essay for lattice column engineering pile and beam；
S4, with one or three sections Liang Weiyi, digging machine station cuts the earth on bottom plate, is unearthed；
Bottom plate under S5, construction support, changes diagonal brace on the bottom plate after reaching intensity；
S6, in stabilization zone setting back-pressure soil, set diagonal brace described in 4-5 root as a construction flowing water section, one by one cross construction.
2. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
In rapid S1, the base plate thickness is not less than 600mm, and the fashioned iron force transfer key and the bottom plate fit closely setting.
3. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
In rapid S3, setting support support, the support are arranged in parallel on the support support with the beam on beam and floor.
4. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
In rapid S4 and S5, back-pressure soil extremely hole bottom and immediately construction cushion coat and the bottom plate, the bottom plate and the lattice column engineering are excavated
It is backfilled between stake using 450mm element concrete, it is closely knit using sand backfill between the bottom plate other end and the lattice column engineering pile.
5. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
In rapid S5, the diagonal brace other end with the pile pier and the lattice column engineering pile by being connected directly.
6. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
It is described to change during diagonal brace in rapid S5, after support replacement pier reaches the 80% of design strength, first of support and support branch can be removed
Seat and column.
7. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
Between rapid S5-S6, in, during constructing back-pressure platform, answers coordinative construction floor and reinforced concrete support simultaneously and pour.
8. deep basal pit back-pressure soil according to claim 1 adds diagonal brace form construction method for supporting, which is characterized in that the step
In rapid S6, construction direction is to turn left from the right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910586088.2A CN110318402A (en) | 2019-07-01 | 2019-07-01 | A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910586088.2A CN110318402A (en) | 2019-07-01 | 2019-07-01 | A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110318402A true CN110318402A (en) | 2019-10-11 |
Family
ID=68122260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910586088.2A Pending CN110318402A (en) | 2019-07-01 | 2019-07-01 | A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110318402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114970016A (en) * | 2022-05-13 | 2022-08-30 | 安徽省城建设计研究总院股份有限公司 | Pi-shaped support inclined strut displacement calculation method, Pi-shaped support design method and support method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277807A (en) * | 2018-04-09 | 2018-07-13 | 浙江乔兴建设集团有限公司 | Deep basal pit artesian water is prominent to gush decompression control water-bound |
| CN109183809A (en) * | 2018-10-16 | 2019-01-11 | 北京建工国际投资有限责任公司 | A kind of construction method of Muddy Bottoms clay deep-foundation pit engineering composite support support replacement |
| CN109403339A (en) * | 2018-10-16 | 2019-03-01 | 中建局集团建设发展有限公司 | The deep basal pit composite supporting construction and its method for protecting support of double-row pile combination method of center island |
| CN109667273A (en) * | 2018-12-22 | 2019-04-23 | 广州市天作建筑规划设计有限公司 | A kind of construction method of deep foundation pit supporting structure |
-
2019
- 2019-07-01 CN CN201910586088.2A patent/CN110318402A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277807A (en) * | 2018-04-09 | 2018-07-13 | 浙江乔兴建设集团有限公司 | Deep basal pit artesian water is prominent to gush decompression control water-bound |
| CN109183809A (en) * | 2018-10-16 | 2019-01-11 | 北京建工国际投资有限责任公司 | A kind of construction method of Muddy Bottoms clay deep-foundation pit engineering composite support support replacement |
| CN109403339A (en) * | 2018-10-16 | 2019-03-01 | 中建局集团建设发展有限公司 | The deep basal pit composite supporting construction and its method for protecting support of double-row pile combination method of center island |
| CN109667273A (en) * | 2018-12-22 | 2019-04-23 | 广州市天作建筑规划设计有限公司 | A kind of construction method of deep foundation pit supporting structure |
Non-Patent Citations (3)
| Title |
|---|
| 徐天平: "《地基与基础工程施工质量问答》", 30 April 2014, 中国建筑工业出版社 * |
| 徐煌等: "《房屋建筑与装饰工程计量与计价》", 31 May 2018, 西安交通大学出版社 * |
| 王旭东等: "《房屋建筑构造》", 31 January 2017, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114970016A (en) * | 2022-05-13 | 2022-08-30 | 安徽省城建设计研究总院股份有限公司 | Pi-shaped support inclined strut displacement calculation method, Pi-shaped support design method and support method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101509261B (en) | Method for pile plate base for ultra-high voltage electric power line steel tower on soft foundation | |
| CN106522241A (en) | Deep foundation pit supporting method of ultrahigh floor height type basement structure | |
| CN202689008U (en) | Supporting structure for double-row prefabricated high-strength concrete thin-walled steel pipe pile foundation pit | |
| CN102691300A (en) | Construction method of foundation pit earthwork | |
| CN106245927B (en) | A kind of method and building suitable for frame structure building underground increasing layer | |
| CN103290847A (en) | Inner oblique beam supporting structure for oversized-area deep foundation pit and construction method | |
| CN110486034A (en) | Subway station and construction method based on pile foundation in four pilot tunnel of single layer and middle drift | |
| CN110206039B (en) | Construction method of Larsen steel sheet pile in pit under complex geological conditions | |
| CN109882209B (en) | Bored pile pre-reinforced supporting structure of undersolidified stratum underpass tunnel and construction method | |
| CN112682045B (en) | Bearing structure of underground tunnel ultra-shallow buried underpass highway and construction method | |
| CN102493458A (en) | Construction method for closing end of deep foundation pit steel sheet pile in soft soil foundation pipe trench and power tunnel engineering | |
| CN110318402A (en) | A kind of deep basal pit back-pressure soil adds diagonal brace form construction method for supporting | |
| CN211851850U (en) | Little clear distance tunnel supporting construction suitable for collapsible loess | |
| CN210087321U (en) | Pile foundation pre-reinforcing and supporting structure for controlling tunnel settlement | |
| CN116122306A (en) | Block enclosing isolation method for foundation pit supporting earthwork excavation | |
| CN102787605A (en) | Method for inclining bar-type foundation pit support steel sheet pile of soft soil foundation | |
| CN106120853B (en) | A kind of inverted construction method of frame bridge | |
| CN106223344B (en) | A kind of ground line piled anchor frame foundation pit supporting method | |
| CN105986830A (en) | Underground-excavation building method for roadside strip-shaped underground garage | |
| CN109138484B (en) | Construction method for connecting jacking layer-added concrete-filled steel tubular column with foundation | |
| CN212642730U (en) | Collapsible loess area tunnel passes people's air defense structure | |
| CN212052780U (en) | Oblique supporting type deep foundation pit supporting structure | |
| CN209742922U (en) | Cast-in-place pile pre-reinforcing supporting structure for underpass tunnel in unconsolidated stratum | |
| CN209923935U (en) | Co-location combined pile wall supporting structure in upper-soft and lower-hard stratum | |
| CN113737857A (en) | Be used for deep pipe gallery structure and major structure to build connection structure again and worker's method thereof |
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: 20191011 |
|
| RJ01 | Rejection of invention patent application after publication |