CN111945739A - Bottom stuffy-dismantling method for concrete supporting plate of deep foundation pit near rail - Google Patents
Bottom stuffy-dismantling method for concrete supporting plate of deep foundation pit near rail Download PDFInfo
- Publication number
- CN111945739A CN111945739A CN202010715196.8A CN202010715196A CN111945739A CN 111945739 A CN111945739 A CN 111945739A CN 202010715196 A CN202010715196 A CN 202010715196A CN 111945739 A CN111945739 A CN 111945739A
- Authority
- CN
- China
- Prior art keywords
- support
- concrete
- foundation pit
- plate
- underground box
- 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.)
- Granted
Links
Images
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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to a bottom tight dismantling method for a concrete supporting plate of a deep foundation pit of an adjacent rail, which comprises the following steps: dividing a support system into a first support, a second support, a third support and a fourth support; after the construction of the bottom plate and the support changing belt is completed, the fourth support is dismantled; constructing a negative second-layer structure, combining an external wall plate of the underground box body with a third support, and reserving holes on the floor; when the floor reaches the design strength requirement, removing the first support and the second support, and simultaneously carrying out one-layer structure construction; carrying out chain saw cutting on the large space area of the negative second layer and the third support on the inner side of the outer wall plate of the underground box body permanently adjacent to the joint; mechanically breaking the rest cast-in-place piles and the intermediate wall which cannot be cut; and (5) hoisting and transporting concrete blocks. The method meets the requirement of the design working condition of support dismantling, reduces the deformation of the foundation pit to the maximum extent, and ensures the safety of foundation pit construction; the concrete support is dismantled in the basement structure, and superstructure normal construction has shortened construction period.
Description
Technical Field
The invention relates to the technical field of foundation pit construction, in particular to a bottom tight dismantling method for a concrete supporting plate of a deep foundation pit near a rail.
Background
With the rapid development of urban construction, building development and utilization are gradually changed from an overground space to an underground space, deep foundation pits are more and more common in the development of the underground space, concrete supports are used as important technical means for protecting the deep foundation pits, and the selection of the dismantling mode is particularly critical.
For the height of a basement layer and the complex structural form, two or more than two concrete supports are positioned on the same layer, and according to the design working condition requirement of a foundation pit, after the construction of the structure of the upper layer is completed, the concrete supports can be disassembled, and how to operate under the complex and special environment, the support stress characteristic and the construction efficiency are considered, so that the method for disassembling the bottom of the concrete support plate of the near-rail deep foundation pit is provided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the bottom sealing and dismantling method of the concrete supporting plate of the deep foundation pit of the adjacent rail is provided.
In order to achieve the technical effects, the invention adopts the technical scheme that: a bottom stuffy dismantling method for a concrete supporting plate of a deep foundation pit of an adjacent rail comprises the following steps:
s1, dividing a support system into a first support, a second support, a third support and a fourth support from a negative first layer to a negative second layer of an underground box body in the foundation pit;
s2, after the construction of the bottom plate and the support changing belt is completed, removing the fourth support;
s3, constructing a negative double-layer structure, combining an external wall plate of the underground box body with a third support, and reserving holes on the floor plate;
s4, when the floor reaches the design strength requirement, removing the first support and the second support, and simultaneously carrying out a first-layer structure construction;
s5, performing chain saw cutting on the large space area of the negative second floor and the third support on the inner side of the outer wall panel of the underground box body permanently adjacent to the joint;
s6, mechanically breaking the residual cast-in-place piles and the intermediate wall which cannot be cut;
and S7, hoisting and transporting the concrete block.
Further, in step S1, the first support and the second support are located at the sub-second floor, and the third support and the fourth support are located at the sub-second floor.
Further, the cutting position was confirmed by BIM modeling before demolition: according to the shape of the cut part and the conditions of a construction site, the cutting weight is determined to carry out blocking, then thinning blocking processing is carried out on a plan view of the supporting system, and the position of a cutting seam is set.
Furthermore, the cutting line of the cutting seam position dividing block adopts a cutting machine to perform inverted V-shaped cutting.
Furthermore, in step S3, a part of the purlin of the third support needs to be used as a permanent structure of the external wall panel of the underground box, the purlin is provided with a pouring hole, a longitudinal steel bar connecting the external wall panels of the upper and lower boxes is reserved on the purlin, and a waterproof measure is taken between the purlin and the external wall panels of the upper and lower boxes.
Further, in the step S5, the third support penetrates through the wall panel in the underground box to perform water drilling and hole opening, the third supports on the two sides of the wall panel in the underground box are cut before the water drilling and hole opening, the third supports remaining in the wall panel in the underground box are directly taken out after the water drilling and hole opening, and a hand hammer or a drill is used for removing excess concrete on the inner side of the cutting line of the hole opening.
Further, the hole opening needs to be repaired after the water drill is drilled, and the hole opening construction comprises the following steps:
A. arranging a wood template at a position, which is away from the third support by a specified distance, of the inner wall plate of the underground box body, then binding reinforcing steel bars of the inner wall plate of the underground box body, reserving reinforcing steel bar connectors at one horizontal and vertical ends, and reserving reinforcing steel bars at the other end for double-side welding;
B. after the third support is cut off and removed, connecting the steel bars;
C. notches are arranged at the bottom and two sides of the joint of the new concrete and the old concrete, steel plate water stops are arranged at the top of the joint, and then concrete at the opening of the hole is poured.
And furthermore, in the step C, the post-cast concrete adopts the compensation shrinkage concrete, and the grade of the compensation shrinkage concrete is improved by one grade compared with that of the concrete of the structure.
Further, in step S5, if the height between the bottom plate and the third support is too high, the cutting cannot be performed by using a forklift, and a shaped mobile portal frame may be provided on the top plate as a hoisting machine.
Further, in the step S7, after the concrete blocks removed by the support system are lifted away from the foundation pit, the concrete blocks are manually transported to a designated centralized stacking mode, and then transported to an outside by a dense mesh steel wire net bag truck.
Compared with the prior art, the invention has the beneficial effects that:
1. the requirement of the design working condition of support dismantling is met, the deformation of the foundation pit caused by support dismantling is reduced to the maximum extent, and the safety of foundation pit construction is ensured;
2. the concrete support is dismantled in the basement structure, so that the key working procedures are not occupied, the upper structure is normally constructed, and the construction period is shortened;
3. the purlin that encloses that the third support is done to face the combination with the side fascia of underground box forever, reducible construction volume, and structural strength is high, and the antiseep is good.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is apparent that the described embodiments are some, but not all embodiments of the present invention.
Drawings
FIG. 1 is a flow chart of a bottom sealing and dismantling method of a concrete supporting plate of a deep foundation pit near a rail, provided by the invention;
FIG. 2 is a schematic illustration of the support system partitioning of the present invention;
FIG. 3 is a schematic view of the present invention with the fourth support removed;
FIG. 4 is a schematic view of the present invention with the first and second supports removed;
FIG. 5 is a schematic view of the present invention with the third support removed;
FIG. 6 is a schematic structural view of the combination of the external wall panel of the underground box and a third support;
FIG. 7 is a schematic view of the water drilling of the present invention;
FIG. 8 is a schematic structural view of the opening construction of the present invention;
FIG. 9 is a cross-sectional view taken along line 1-1 of FIG. 8;
fig. 10 is a cross-sectional view 2-2 of fig. 8.
The reference numbers and corresponding designations in the drawings are: 1. the prefabricated steel plate water stop purlin comprises a first support, 2 a second support, 3 a third support, 4 a fourth support, 5 a foundation pit, 6 a bottom plate, 7 a floor slab, 8 an underground box external wall plate, 9 an underground box internal wall plate, 10 a pouring hole, 11 a longitudinal steel bar, 12 a wood template, 13 a steel bar connector, 14 a notch, 15 a steel plate water stop and 301 a purlin.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in figure 1, the invention provides a bottom sealing and dismantling method for a concrete supporting plate of a deep foundation pit 5 facing a rail, which comprises the following steps:
s1, dividing an underground box body in the foundation pit 5 into a first support 1, a second support 2, a third support 3 and a fourth support 4 from a first layer to a second layer;
s2, after the construction of the bottom plate 6 and the support changing belt is completed, the fourth support 4 is removed;
s3, constructing a negative double-layer structure, combining the outer wall plate 8 of the underground box body with the third support 3, and reserving holes on the floor plate 7;
s4, when the floor slab 7 meets the design strength requirement, removing the first support 1 and the second support, and simultaneously carrying out a negative layer structure construction;
s5, performing chain saw cutting on the large space area of the negative second floor and the third support 3 on the inner side of the outer wall plate 8 of the underground box body at the permanent adjacent joint;
s6, mechanically breaking the residual cast-in-place piles and the intermediate wall which cannot be cut;
and S7, hoisting and transporting the concrete block.
In step S1, the first support 1 and the second support 2 are located at the sub-second floor, and the third support 3 and the fourth support 4 are located at the sub-second floor. The cutting position was confirmed by BIM modeling before demolition: according to the shape of the cut part and the conditions of a construction site, the cutting weight is determined to carry out blocking, then thinning blocking processing is carried out on a plan view of the supporting system, and the position of a cutting seam is set. And dividing the cutting line of the cutting seam position, and performing inverted V-shaped cutting by adopting a cutting machine.
The BIM model is adopted to help determine the cutting position of the field supporting system, so that the confirmation and the comparison can be more visually carried out, the block cutting is favorable for the transportation and the vertical lifting in a narrow space, and the finished structure is protected to a certain extent.
As shown in fig. 6, in step S3, a part of the purlin 301 of the third brace 3 needs to be used as a permanent structure of the external wall panels 8 of the underground box body, the purlin 301 is provided with pouring holes 10, the purlin 301 is reserved with longitudinal steel bars 11 connecting the external wall panels 8 of the underground box body, and waterproof measures are taken between the purlin 301 and the external wall panels 8 of the underground box body.
The partial purlin 301 that encloses of third support 3 needs as the permanent structure use of underground box body side fascia 8, reducible construction volume, shorten construction cycle, through enclosing the steel reinforcement 11 that purlin 301 reserved and the steel reinforcement of upper and lower external wall board 8 of underground box body with reinforcing structure, build integrative by pouring hole 10 grout again, consider that this underground box body is for flourishing water structure, it is higher to the anti-seepage requirement of structure, do the water-proof measure for this between upper and lower external wall board 8 of underground box.
As shown in fig. 7 to 10, in step S5, the third support 3 penetrates the position of the inner wall panel 9 of the underground box body to be drilled with water, the third supports 3 on both sides of the inner wall panel 9 of the underground box body are cut before drilling with water, the third supports 3 remaining in the inner wall panel 9 of the underground box body are directly taken out after drilling with water, and a hand hammer or a drill is used for removing excess concrete inside the cutting line of the opening.
Wherein, need mend the entrance to a cave after the water bores the opening, the entrance to a cave construction includes following step:
A. arranging a wood template 12 at a position, which is in the underground box body, of the inner wall plate 9 at a specified distance from the third support 3, then binding reinforcing steel bars of the inner wall plate 9 of the underground box body, reserving reinforcing steel bar connectors 13 at one horizontal and vertical ends, and reserving reinforcing steel bars at the other end for double-side welding;
B. after the third support 3 is cut off and removed, connecting the steel bars;
And C, in the step C, the post-cast concrete adopts the compensation shrinkage concrete, and the grade of the compensation shrinkage concrete is improved by one grade compared with the grade of the concrete of the building.
The hole is opened through boring to 9 water of underground box internal wall panels, can take out the concrete piece after 3 cutting of third support to take out after transversely carrying from the entrance to a cave, then need mend the entrance to a cave, guarantee the anti-seepage requirement of underground box internal wall panels 9 through notch 14 and steel sheet waterstop 15.
In step S5, if the height of the bottom plate 6 and the third support 3 is too high, the cutting cannot be performed by using a forklift, and a shaped mobile portal frame may be provided on the top plate as a hoisting machine.
In step S7, the concrete blocks removed by the support system are lifted away from the foundation pit 5, and then manually transported to a designated centralized stack, and then transported to an outside by a dense mesh steel wire net bag truck.
As shown in fig. 2-5, the steps are adopted in the invention, the fourth support 4 is firstly removed, then the first support 1 and the second support 2 are removed, and finally the third support 3 is removed, the basement structure is constructed in the same order, the support body is removed in the basement structure, the key process is not occupied, the upper structure is constructed normally, the construction period is shortened, the lateral deformation of the foundation pit 5 can be effectively controlled, and the safety of the foundation pit 5 is ensured.
It should be noted that, because the stuffy removal cleaning workload is large, the floor slab 7 is reserved with holes to meet the vertical transportation of the crushed aggregates, and the horizontal transportation of the crushed aggregates is met by drilling holes through water drilling in the inner wall board 9 and the area with a complex structure of the underground box. The stuffy demolition is limited by space and construction machinery, and a pickaxe is adopted to mechanically crush the demolished area with relative spaciousness; a chain saw can be used for static cutting when the demolition area is relatively narrow, and guide wheels are arranged for assisting in cutting when the static cutting is carried out on the root parts and the node parts of some wallboards; and for the removal of the areas with very narrow space in the cavities of some structures, the pneumatic pick is adopted for manual removal.
The present invention is not limited to the above-described embodiments, and various modifications made without inventive step from the above-described concept will fall within the scope of the present invention for those skilled in the art.
Claims (10)
1. A bottom stuffy dismantling method for a concrete supporting plate of a deep foundation pit of an adjacent rail is characterized by comprising the following steps:
s1, dividing a support system into a first support, a second support, a third support and a fourth support from a negative first layer to a negative second layer of an underground box body in the foundation pit;
s2, after the construction of the bottom plate and the support changing belt is completed, removing the fourth support;
s3, constructing a negative double-layer structure, combining an external wall plate of the underground box body with a third support, and reserving holes on the floor plate;
s4, when the floor reaches the design strength requirement, removing the first support and the second support, and simultaneously carrying out a first-layer structure construction;
s5, performing chain saw cutting on the large space area of the negative second floor and the third support on the inner side of the outer wall panel of the underground box body permanently adjacent to the joint;
s6, mechanically breaking the residual cast-in-place piles and the intermediate wall which cannot be cut;
and S7, hoisting and transporting the concrete block.
2. The method for bottom sealing and dismantling a concrete supporting plate of an adjacent rail deep foundation pit according to claim 1, wherein in the step S1, the first support and the second support are located at the underground sub-story, and the third support and the fourth support are located at the underground sub-story.
3. The bottom sealing method for the concrete supporting plate of the deep foundation pit with the temporary rail, according to claim 1, wherein the cutting position is confirmed through BIM modeling before the removal: according to the shape of the cut part and the conditions of a construction site, the cutting weight is determined to carry out blocking, then thinning blocking processing is carried out on a plan view of the supporting system, and the position of a cutting seam is set.
4. The method for bottom sealing and dismantling of the concrete supporting plate of the deep foundation pit with the temporary rail as claimed in claim 3, wherein the cutting position is divided into cutting lines, and a cutter is used for cutting the concrete supporting plate in a reversed V shape.
5. The method for demolishing the bottom of the concrete supporting plate of the deep foundation pit near the rail according to claim 1, wherein in step S3, a part of the purlin surrounding the third support is used as a permanent structure of the external wall panel of the underground box body, the purlin surrounding the third support is provided with a pouring hole, and the purlin surrounding the third support is provided with a longitudinal steel bar which is connected with the external wall panels of the underground box body, the upper external wall panel and the lower external wall panel, and waterproof measures are taken between the purlin surrounding the third support and the external wall panels of the underground box body.
6. The method for disintegrating the bottom of the concrete supporting plate of the deep foundation pit near the rail according to claim 1, wherein in step S5, the third support penetrates through the wall plate in the underground box to be drilled, the third supports on both sides of the wall plate in the underground box are cut before drilling, the third supports remaining in the wall plate in the underground box are directly taken out after drilling, and a hand hammer or a drill is used to remove the excess concrete inside the cutting line of the opening.
7. The method for airtightly disassembling the bottom of the concrete supporting plate of the deep foundation pit with the temporary rail according to claim 6, wherein the hole needs to be repaired after the water drill is drilled, and the hole construction comprises the following steps:
A. arranging a wood template at a position, which is away from the third support by a specified distance, of the inner wall plate of the underground box body, then binding reinforcing steel bars of the inner wall plate of the underground box body, reserving reinforcing steel bar connectors at one horizontal and vertical ends, and reserving reinforcing steel bars at the other end for double-side welding;
B. after the third support is cut off and removed, connecting the steel bars;
C. notches are arranged at the bottom and two sides of the joint of the new concrete and the old concrete, steel plate water stops are arranged at the top of the joint, and then concrete at the opening of the hole is poured.
8. The method for airtightly dismantling the bottom of the concrete supporting plate of the deep foundation pit adjacent to the rail as claimed in claim 7, wherein in the step C, the post-cast concrete is shrinkage-compensated concrete, and the grade of the shrinkage-compensated concrete is improved by one grade compared with that of the concrete of the structure.
9. The method for disintegrating the bottom of the concrete supporting plate of the deep foundation pit near the rail according to claim 6, wherein in the step S5, if the height between the bottom plate and the third support is too high, a forklift cannot be used for cutting, and a shaped movable portal frame can be arranged on the top plate to serve as a hoisting machine.
10. The method for disintegrating the bottom of the concrete supporting plate of the deep foundation pit near the rail according to claim 1, wherein in step S7, the concrete blocks removed by the supporting system are manually transported to a designated centralized stacking after being lifted away from the foundation pit, and then transported outside by a dense mesh steel wire net bag truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715196.8A CN111945739B (en) | 2020-07-23 | 2020-07-23 | Bottom stuffy-dismantling method for concrete supporting plate of deep foundation pit near rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715196.8A CN111945739B (en) | 2020-07-23 | 2020-07-23 | Bottom stuffy-dismantling method for concrete supporting plate of deep foundation pit near rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111945739A true CN111945739A (en) | 2020-11-17 |
| CN111945739B CN111945739B (en) | 2022-03-08 |
Family
ID=73341753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010715196.8A Active CN111945739B (en) | 2020-07-23 | 2020-07-23 | Bottom stuffy-dismantling method for concrete supporting plate of deep foundation pit near rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111945739B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100967497B1 (en) * | 2010-02-19 | 2010-07-07 | (주)바로건설기술 | Method for constructing an underground structure |
| CN108071118A (en) * | 2018-01-12 | 2018-05-25 | 上海岩土工程勘察设计研究院有限公司 | A kind of supporting construction and its construction method and the overlapping piling wall for also serving as supporting construction |
| CN208072415U (en) * | 2018-03-28 | 2018-11-09 | 杭州江润科技有限公司 | Deep foundation pit reinforced concrete support part changes structure |
| JP2018188874A (en) * | 2017-05-08 | 2018-11-29 | 清水建設株式会社 | Earth retaining structure and construction method of the same |
| CN109610473A (en) * | 2018-12-26 | 2019-04-12 | 福建建中建设科技股份有限公司 | A kind of construction method of the large-scale pool structure foundation pit supporting system of municipal administration |
| CN111074902A (en) * | 2019-11-19 | 2020-04-28 | 中国二十冶集团有限公司 | Construction method for dismantling deep foundation pit concrete support beam in soft soil area |
-
2020
- 2020-07-23 CN CN202010715196.8A patent/CN111945739B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100967497B1 (en) * | 2010-02-19 | 2010-07-07 | (주)바로건설기술 | Method for constructing an underground structure |
| JP2018188874A (en) * | 2017-05-08 | 2018-11-29 | 清水建設株式会社 | Earth retaining structure and construction method of the same |
| CN108071118A (en) * | 2018-01-12 | 2018-05-25 | 上海岩土工程勘察设计研究院有限公司 | A kind of supporting construction and its construction method and the overlapping piling wall for also serving as supporting construction |
| CN208072415U (en) * | 2018-03-28 | 2018-11-09 | 杭州江润科技有限公司 | Deep foundation pit reinforced concrete support part changes structure |
| CN109610473A (en) * | 2018-12-26 | 2019-04-12 | 福建建中建设科技股份有限公司 | A kind of construction method of the large-scale pool structure foundation pit supporting system of municipal administration |
| CN111074902A (en) * | 2019-11-19 | 2020-04-28 | 中国二十冶集团有限公司 | Construction method for dismantling deep foundation pit concrete support beam in soft soil area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111945739B (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101967985B (en) | Self-propelled inverted arch template construction method | |
| CN107119711B (en) | Connecting structure for large-range adjacent existing transfer station and construction method | |
| CN112031026A (en) | Permanent-temporary combined open-cut and smooth-built structure for subway station and construction method | |
| CN103603359A (en) | Deep foundation pit diagonal bracing support structure demolition method | |
| CN111809662B (en) | Subway station underground structure combination construction method | |
| CN111827349B (en) | Method for quickly constructing underground structure of subway station by adopting combined structure technology | |
| CN111456032A (en) | Foundation pit supporting system and construction method thereof | |
| CN111945739B (en) | Bottom stuffy-dismantling method for concrete supporting plate of deep foundation pit near rail | |
| CN105862897A (en) | Original-groove casting construction method for shallow foundation of sandy mudstone foundation | |
| CN202925564U (en) | Tunnel shield receiving structure without working well of existing cellar structure | |
| CN114809703B (en) | Column-pulling conversion reinforcing structure and construction method thereof | |
| CN112610022B (en) | Old building translation construction method near deep foundation pit | |
| CN206538737U (en) | Aqueduct is all-hydraulic to open self-propelled template system | |
| CN105625468B (en) | A kind of method of construction of multi-layer underground building | |
| CN111827265A (en) | Construction method of steel reinforced concrete underground continuous wall | |
| CN111827266B (en) | Method for constructing underground continuous wall by using steel caisson technology | |
| CN115198797B (en) | Underground communication channel construction method combining three-side surrounding pipe curtain method and open cut | |
| CN216765988U (en) | Retaining wall structure at open cut storey-adding vertical shaft position for underground excavation construction | |
| CN214785820U (en) | Multifunctional wellhead lifting operation platform | |
| CN114809015B (en) | Temporary support system and permanent structure combined construction method for open cut subway station | |
| CN105604180B (en) | A kind of construction method of underground structure | |
| CN220579971U (en) | Special-shaped pile capable of being used as anti-floating roof | |
| CN212506224U (en) | Shear wall structural member of underground continuous wall | |
| CN110685454B (en) | Loess cave dwelling earthquake-resistant reinforcing method adopting replacement of vault sheared area earthing | |
| CN106760621A (en) | One kind is encorbelmented floor temporary support structure and construction method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |