CN111335321B - Deep foundation pit structure above subway tunnel and construction method thereof - Google Patents
Deep foundation pit structure above subway tunnel and construction method thereof Download PDFInfo
- Publication number
- CN111335321B CN111335321B CN202010171575.5A CN202010171575A CN111335321B CN 111335321 B CN111335321 B CN 111335321B CN 202010171575 A CN202010171575 A CN 202010171575A CN 111335321 B CN111335321 B CN 111335321B
- Authority
- CN
- China
- Prior art keywords
- construction
- raft
- foundation pit
- deep foundation
- pit structure
- 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.)
- Active
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
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- 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
- E02D29/02—Retaining or protecting walls
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)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a deep foundation pit structure above a subway tunnel and a construction method thereof, relating to the technical field of deep foundation pits and comprising a soil layer and the subway tunnel arranged in the soil layer, wherein a pile foundation is arranged in the soil layer, a underpinning beam is cast at the upper end of the pile foundation, a raft is arranged above the underpinning beam, a shockproof waterproof layer is arranged on the lower plane of the raft, a retaining wall is arranged on the deep foundation pit structure, the inner side wall of the retaining wall is abutted against the raft, a support beam is arranged between the inner side walls, a plurality of isolation plates which are distributed in the length direction of the support beams are arranged on the raft, each isolation plate is positioned between two mutually symmetrical retaining walls, each isolation plate is vertically arranged and is vertical to the support beam, each support rod is divided into a plurality of outer support rods, and two ends of each outer support rod are respectively connected with the corresponding retaining wall or isolation plate. The invention has the effect of improving the stability of the support beam.
Description
Technical Field
The invention relates to the technical field of deep foundation pits, in particular to a deep foundation pit structure above a subway tunnel and a construction method thereof.
Background
Along with the development of urban subways, more and more foundation pit projects are provided within the protection range of urban subway tunnels. At present, more and more construction examples of the deep foundation pit adjacent to the urban subway appear at home and abroad, but the construction practice of the deep foundation pit above the subway tunnel is relatively few. The deep foundation pit engineering above the iron tunnel is high-risk engineering, and the tunnel bulge below can be synchronously driven to deform when the pit bottom bulges caused by foundation pit excavation, so that the condition of subway tunnel deformation can occur, and the allowable deformation of the subway tunnel is extremely strict; the deep foundation pit structure that sets up after the foundation pit dug is also very strict, in case deep foundation pit structure sinks can directly lead to subway tunnel to warp.
In order to solve the problems, the applicant proposes a deep foundation pit structure above a subway tunnel and a construction method thereof in 2018, wherein the deep foundation pit structure above the subway tunnel is a Chinese patent with a granted patent number of CN209211455U and comprises a soil layer and the subway tunnel arranged in the soil layer, pile foundations positioned at two sides of the subway tunnel are arranged in the soil layer, a underpinning beam is poured at the upper end of each pile foundation, the subway tunnel is positioned below the underpinning beam, a raft is arranged above the underpinning beam, a reinforcing beam and a shockproof waterproof layer are arranged on the lower plane of the raft, the lower surface of the shockproof waterproof layer is butted with the soil layer, a retaining wall is arranged on the deep foundation pit structure, the outer side wall of the retaining wall is butted with the soil layer, the inner side wall of the retaining wall is butted with the raft, and a supporting beam is arranged between the inner side walls; the pressure that utilizes the underpinning roof beam to receive deep basal pit structure shifts the pile foundation, makes deep basal pit structure have stronger stability and intensity to guarantee subway tunnel's safety.
The applicant finds that the technical scheme still has certain defects in subsequent construction engineering, and particularly, the area of a part of deep foundation pit is large, so that the distance between two retaining walls is large, the length of each supporting beam between the two retaining walls is large, the strength and the stability of each supporting beam are poor, and improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a deep foundation pit structure above a subway tunnel for improving the stability of a support beam, and the invention aims to provide a construction method of the deep foundation pit structure.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a deep basal pit structure of subway tunnel top, includes the soil layer and sets up the subway tunnel in the soil layer, be provided with the pile foundation in the soil layer, the underpinning roof beam has been pour to the upper end of pile foundation, and the top of underpinning roof beam is provided with the raft, and the lower plane of raft is provided with the waterproof layer that takes precautions against earthquakes, deep basal pit structure is provided with retaining wall, is provided with a supporting beam between retaining wall inside wall and the raft conflict of inside wall, be provided with the division board that a plurality of braced beam length direction were arranged on the raft, each the division board is located between the two symmetrical retaining walls of each other, each the vertical setting of division board just is mutually perpendicular with a supporting beam, each a plurality of outer vaulting poles are all cut apart into to a supporting beam, each the both ends of outer vaulting pole are connected with corresponding retaining wall or division board respectively.
By adopting the technical scheme, the pile foundation props up the underpinning beam, the underpinning beam has enough strength, and the underpinning beam props up the raft, so that the deep foundation pit structure has enough strength and stability, and the safety of the subway tunnel is guaranteed; the pile foundation, the underpinning beam and the raft can effectively reduce the pressure of the deep foundation pit structure on a soil layer above the subway tunnel, so that the safety of the subway tunnel below the deep foundation pit structure is guaranteed; wherein, utilize the division board to cut off each outer vaulting pole of constituteing the pole for the one end that two adjacent outer vaulting poles meet supports on the division board, and the division board is fixed again on the raft board, thereby reaches the effect that plays vertical support to outer vaulting pole tip, therefore stability is stronger, and can increase the stress point select range of outer vaulting pole through the division board, thereby reaches the effect that reduces the outer vaulting pole installation degree of difficulty.
The present invention in a preferred example may be further configured to: the two side surfaces of each isolation plate are provided with a plurality of inclined supporting rods, the inclined supporting rods are arranged in the length direction of the isolation plates and are obliquely arranged, the upper ends of the inclined supporting rods are connected with the isolation plates, and the lower ends of the inclined supporting rods are connected with the raft.
Through adopting above-mentioned technical scheme, can play the effect that increases the vertical stability of division board through the diagonal brace for when division board one side and outer vaulting pole butt and another side do not with outer vaulting pole butt, the division board is difficult for taking place to buckle because the atress is inhomogeneous.
The present invention in a preferred example may be further configured to: and the two ends of each outer support rod are provided with flange plate structures, and the end parts of the outer support rods are connected with the partition plate or the retaining wall through the flange plate structures.
Through adopting above-mentioned technical scheme, can increase the connection area between outer vaulting pole and division board or the retaining wall through the ring flange structure, further increase the installation stability of outer vaulting pole, and can realize dismantling through the ring flange structure and be connected between outer vaulting pole and division board or the retaining wall.
The present invention in a preferred example may be further configured to: each division board is provided with a plurality of connecting areas used for limiting the connecting positions of the flange plate structures, and each connecting area is provided with a plurality of threaded holes used for locking bolts of the flange plate structures.
Through adopting above-mentioned technical scheme, inject the mounted position of outer vaulting pole on the division board through the joining region to make the mode direct mount that the ring flange structure that is used for fixed outer vaulting pole can pass through bolt lock pair on the division board through the screw hole that sets up on the joining region.
The present invention in a preferred example may be further configured to: each outer support rod comprises an adjusting rod and two movable rods which are respectively in threaded connection with two ends of the adjusting rod, and the thread spiral directions of the two ends of the adjusting rod are opposite.
Through adopting above-mentioned technical scheme, can reach the effect of adjusting outer vaulting pole actual length through adjusting the cooperation between pole and the movable rod for the mounted position of division board is limited little, and effectively improves the application scope of outer vaulting pole.
The present invention in a preferred example may be further configured to: the raft plates comprise concrete plates arranged on the towing and replacing beams and a plurality of bearing columns arranged on the concrete plates in an array mode, and each isolation plate is fixed with the bearing column arranged on the concrete plate in a binding mode.
Through adopting above-mentioned technical scheme, fix on the heel post through the mode of utilizing the division board to bind and can reach and simply fix the raft on concrete slab, simply realize dismantling between division board and the raft and be connected.
The present invention in a preferred example may be further configured to: and an active area for construction personnel to pass through is reserved between the two ends of each partition plate and the retaining wall.
Through adopting above-mentioned technical scheme, be convenient for the staff through the active area and round trip movement between two adjacent construction areas.
The second aim of the invention is realized by the following technical scheme:
a construction method for the deep foundation pit structure is characterized by comprising the following steps:
the method comprises the following steps: dividing construction areas, wherein each construction area is arranged along the length direction of the deep foundation pit, and the actual width of each construction area except the construction area positioned at the tail end of the deep foundation pit is greater than the actual length of the outer support rod;
step two: sequentially completing earthwork excavation, pile foundation installation, underpinning beam casting, raft installation, retaining wall casting, partition board installation, diagonal brace rod installation and outer brace rod installation in a first construction area;
step three: and repeating the second step to finish the construction of each implementation area.
By adopting the technical scheme, one side face of the partition board far away from the retaining wall can be supported through the diagonal brace through the first step and the second step, the stable installation of the partition board in each construction area is ensured, and each construction area after the construction is completed can be combined to form a complete deep foundation pit through the third step.
The present invention in a preferred example may be further configured to: temporary accumulation points are arranged on each construction area in later construction, excavated earthwork is accumulated on the temporary accumulation points in earlier construction, and the earthwork accumulated in the temporary accumulation points is transported out at a specified time point.
Through adopting above-mentioned technical scheme, because the earthwork transports and can produce more dust, for preventing to cause the influence to normal traffic, the local government generally can inject the earthwork and transport the time, through each construction district with later stage construction as piling up the point temporarily and make each construction district of construction in earlier stage also can be under construction outside the earthwork transport time of local government regulation, and can not pile up and cause the construction inconvenience because of the earthwork.
In summary, the invention includes at least one of the following beneficial technical effects:
each supporting rod can be partitioned into a plurality of outer supporting rods, and the end parts of the outer supporting rods are supported by the partition plates, so that the contact area of the end parts of the outer supporting rods is larger, and the connection strength and the stability of the outer supporting rods are effectively improved;
simple structure, construction convenience, each construction district can divide into the multicycle and go on, effectively reduces the earthwork and transports the degree of difficulty out, improves the efficiency of construction.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
FIG. 3 is a schematic structural view of the separator of the present embodiment;
fig. 4 is a schematic structural view of the outer stay of the present embodiment.
Reference numerals: 1. a soil layer; 2. a subway tunnel; 3. dragging and replacing the beam; 4. a pile foundation; 5. a raft plate; 51. a concrete slab; 52. a load-bearing column; 6. a retaining wall; 7. an inner support structure; 71. a support beam; 711. an outer stay bar; 712. adjusting a rod; 713. a movable rod; 714. a flange structure; 72. a separator plate; 721. a connecting region; 722. a threaded hole; 73. a diagonal brace.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the deep foundation pit structure above the subway tunnel disclosed by the invention comprises a soil layer 1 and a subway tunnel 2 arranged in the soil layer 1, and further comprises a dragging and replacing beam 3 arranged at the bottom of the deep foundation pit and used for reducing the stress of the soil layer 1 structure above the subway tunnel 2, a plurality of pile foundations 4 arranged in the soil layer 1 and positioned at two sides of the subway tunnel 2 and used for transferring the stress of the dragging and replacing beam 3 to the pile foundation 4 of the soil layer 1 structure below the subway tunnel 2, a raft 5 arranged on the dragging and replacing beam 3 and used for adjusting the uneven settlement of a building, and a shockproof waterproof layer (not identified in the figure) arranged between the dragging and replacing beam 3 and the raft 5 and used for improving the waterproof and shockproof capabilities of the dragging and replacing beam 3; the construction method is characterized by further comprising a retaining wall 6 which is arranged in the deep foundation pit and matched with the inner side of the deep foundation pit so as to prevent earthwork around the deep foundation pit from collapsing and an inner supporting structure 7 which is arranged in the deep foundation pit and matched with two symmetrical separating walls so as to improve the stability of the retaining wall 6.
Referring to fig. 1 and 2, the inner support structure 7 includes a plurality of horizontally disposed support beams 71, two ends of each support beam are respectively connected to the opposite surfaces of the two symmetrically disposed retaining walls 6, and a plurality of isolation plates 72 fixed on the raft 5 and arranged along the length direction of the support beams 71, and each isolation plate 72 is perpendicular to the support beams 71; each supporting beam 71 is divided into a plurality of outer supporting rods 711 by a partition plate 72, and both ends of each outer supporting rod 711 are respectively connected with the corresponding retaining wall 6 or partition plate 72.
As shown in fig. 2 and 3, the raft 5 includes a concrete slab 51 disposed on the towing beam 3 and a plurality of load-bearing columns 52 disposed on the concrete slab 51 in an array, and each isolation plate 72 is fixed with the load-bearing columns 52 disposed on the concrete slab 51 by means of binding; wherein, a plurality of inclined supporting rods 73 which are arranged along the length direction of the isolation plate 72 and are used for increasing the stability of the isolation plate 72 are arranged on the two side surfaces of each isolation plate 72, and the upper end and the lower end of each inclined supporting rod 73 are respectively connected with the isolation plate 72 and the concrete plate 51.
As shown in fig. 3, an active area for a constructor to pass through is reserved between both ends of each partition plate 72 and the retaining wall 6; wherein, each partition plate 72 can be spliced into a plurality of pieces to adapt to the inner pits with different widths.
As shown in fig. 2 and 4, each outer stay 711 includes an adjusting rod 712 having threads at both ends thereof and two movable rods 713 respectively connected to both ends of the adjusting rod 712, and the threads at both ends of the adjusting rod 712 have opposite directions; when the end of the outer supporting rod 711 is engaged with the retaining wall 6 or the partition plate 72, the end of the movable rod 713 far away from the adjusting rod 712 is connected with the retaining wall 6 or the partition plate 72, and the end of the movable rod 713 far away from the adjusting rod 712 is fixed on the retaining wall 6 or the partition plate 72 through the flange structure 714.
As shown in fig. 3, a plurality of connection areas 721 for limiting the connection positions of the flange structures 714 are disposed on both the left and right sides of the isolation plate 72, and the connection areas 721 disposed on both the left and right sides of the isolation plate 72 are staggered; each connecting area 721 is provided with a plurality of threaded holes 722 which are arranged in a penetrating manner and used for locking bolts of the flange structure 714.
When the outer supporting rods 711 need to be installed, the outer supporting rods 711 are firstly placed between the retaining wall 6 (or the partition plate 72) and the partition plate 72, then the actual lengths of the outer supporting rods 711 are adjusted according to the distance between the retaining wall 6 (or the partition plate 72) and the partition plate 72, the two ends of the outer supporting rods 711 can be respectively abutted against the retaining wall 6 (or the partition plate 72) and the partition plate 72, and finally the flange structures 714 sleeved on the two movable rods 713 are respectively connected with the retaining wall 6 (or the partition plate 72) and the partition plate 72.
After each outer vaulting pole 711 is all installed and is accomplished, can effectively improve the area of contact between each outer vaulting pole 711 and division board 72 or retaining wall 6 through ring flange structure 714 for the installation of outer vaulting pole 711 is more stable, and can increase the stability between division board 72 and the raft 5 through the cooperation between division board 72 and raft 5 and the diagonal brace 73, effectively prevents that division board 72 from taking place the skew because of the atress, ensures the safe handling of division board 72.
A construction method for the deep foundation pit structure as described above, comprising the steps of:
the method comprises the following steps: dividing construction areas, wherein each construction area is arranged along the length direction of the deep foundation pit, and the actual width of each construction area except the construction area positioned at the tail end of the deep foundation pit is larger than the actual length of the outer support rod 711;
step two: in the first construction area, earthwork excavation, pile foundation 4 installation, underpinning beam casting, raft 5 installation, retaining wall 6 casting, partition plate 72 installation, diagonal brace 73 installation and outer brace 711 installation are sequentially completed;
step three: and repeating the second step to finish the construction of each implementation area.
Wherein, each construction area of later construction is provided with a temporary accumulation point, excavated earthwork is accumulated on the temporary accumulation point during the earlier construction, and the earthwork accumulated in the temporary accumulation point is transported out at a specified time point.
Therefore, construction in stages is adopted, the limitation of transportation and accumulation of earthwork is effectively reduced, the construction of the basement is not required to wait for the construction after the complete forming of the deep foundation pit structure, the construction of partial structures can be carried out in each construction area, the construction progress is further improved, the limitation to the area of the deep foundation pit structure is small, the deep foundation pit structure which can be substituted and sold by different areas and shapes can be used, the application range is wide, the economic benefit is better, the structure is simple, and the popularization is convenient.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a deep basal pit structure of subway tunnel top, includes soil layer (1) and subway tunnel (2) of setting in soil layer (1), be provided with pile foundation (4) in soil layer (1), the underpinning roof beam has been pour to the upper end of pile foundation (4), and the top of underpinning roof beam is provided with raft (5), and the lower plane of raft (5) is provided with shockproof waterproof layer, deep basal pit structure is provided with retaining wall (6), is provided with between retaining wall (6) inside wall and raft (5) conflict and the inside wall and supports supporting beam (71), its characterized in that: the raft (5) is provided with a plurality of partition plates (72) which are distributed in the length direction of the support beams (71), each partition plate (72) is positioned between two retaining walls (6) which are symmetrical to each other, each partition plate (72) is vertically arranged and is vertical to the support beam (71), each support beam (71) is divided into a plurality of outer support rods (711), two ends of each outer support rod (711) are respectively connected with the corresponding retaining wall (6) or partition plate (72), a movable area for construction personnel to pass through is reserved between two ends of each partition plate (72) and the retaining wall (6), the raft plates (5) comprise concrete plates (51) arranged on the towing and changing beams (3) and a plurality of bearing columns (52) arranged on the concrete plates in an array mode, and the isolation plates (72) are fixed with the bearing columns (52) arranged on the concrete plates (51) in a binding mode.
2. The deep foundation pit structure above a subway tunnel according to claim 1, wherein: the two side surfaces of each isolation plate (72) are provided with a plurality of inclined supporting rods (73), the length directions of the isolation plates (72) are arranged, the inclined supporting rods (73) are obliquely arranged, the upper ends of the inclined supporting rods (73) are connected with the isolation plates (72), and the lower ends of the inclined supporting rods (73) are connected with the raft (5).
3. The deep foundation pit structure above a subway tunnel according to claim 1, wherein: two ends of each outer supporting rod (711) are provided with flange structures (714), and the end parts of the outer supporting rods (711) are connected with the partition plate (72) or the retaining wall (6) through the flange structures (714).
4. The deep foundation pit structure above a subway tunnel according to claim 1, wherein: each partition plate (72) is provided with a plurality of connecting areas (721) used for limiting the connecting positions of the flange plate structures (714), and each connecting area (721) is provided with a plurality of threaded holes (722) used for locking bolts of the flange plate structures (714).
5. The deep foundation pit structure above a subway tunnel according to claim 1, wherein: each outer support rod (711) comprises an adjusting rod (712) and two movable rods (713) which are respectively in threaded connection with two ends of the adjusting rod (712), and the thread spiral directions of two ends of the adjusting rod (712) are opposite.
6. A construction method for a deep foundation pit structure according to any one of claims 1 to 5, comprising the steps of:
the method comprises the following steps: dividing construction areas, wherein each construction area is arranged along the length direction of the deep foundation pit, and the actual width of each construction area except the construction area positioned at the tail end of the deep foundation pit is larger than the actual length of the outer support rod (711);
step two: the method comprises the following steps of sequentially completing earthwork excavation, pile foundation (4) installation, underpinning beam pouring, raft plate (5) installation, retaining wall (6) pouring, partition plate (72) installation, diagonal brace (73) installation and outer brace (711) installation in a first construction area;
step three: and repeating the second step to finish the construction of each implementation area.
7. The construction method of the deep foundation pit structure according to claim 6, wherein: temporary accumulation points are arranged on each construction area in later construction, excavated earthwork is accumulated on the temporary accumulation points in earlier construction, and the earthwork accumulated in the temporary accumulation points is transported out at a specified time point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171575.5A CN111335321B (en) | 2020-03-12 | 2020-03-12 | Deep foundation pit structure above subway tunnel and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171575.5A CN111335321B (en) | 2020-03-12 | 2020-03-12 | Deep foundation pit structure above subway tunnel and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111335321A CN111335321A (en) | 2020-06-26 |
| CN111335321B true CN111335321B (en) | 2021-11-23 |
Family
ID=71180110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010171575.5A Active CN111335321B (en) | 2020-03-12 | 2020-03-12 | Deep foundation pit structure above subway tunnel and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111335321B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926854A (en) * | 2020-07-21 | 2020-11-13 | 广州地铁设计研究院股份有限公司 | Pile foundation reinforcing method |
| CN113417293B (en) * | 2021-05-28 | 2023-09-05 | 华中伟业建设集团有限公司 | Deep foundation pit supporting structure for building construction |
| CN114753401B (en) * | 2022-04-08 | 2023-05-26 | 中铁十九局集团第五工程有限公司 | Construction method for tunnel bottom karst cave treatment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150109207A (en) * | 2014-03-19 | 2015-10-01 | 이수지 | Self-supported type earth retaining wall structure and construction method thereof |
| CN105155549A (en) * | 2015-06-18 | 2015-12-16 | 中建三局第二建设工程有限责任公司 | Partition support system for large-area deep foundation pit under forward and backward working condition, and construction method thereof |
| CN107246016A (en) * | 2017-08-01 | 2017-10-13 | 中铁第四勘察设计院集团有限公司 | A kind of suspension type inner support system and foundation ditch construction method suitable for base pit engineering |
| CN207003449U (en) * | 2017-07-31 | 2018-02-13 | 吴科 | A kind of horizontal support structure for construction |
| CN207331704U (en) * | 2017-10-23 | 2018-05-08 | 陈煌辉 | A kind of municipal road foundation pit supporting construction being readily disassembled |
| CN209211455U (en) * | 2018-10-25 | 2019-08-06 | 广东省建筑构件工程有限公司 | A kind of deep basal pit structure of underground tunnel upper |
-
2020
- 2020-03-12 CN CN202010171575.5A patent/CN111335321B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150109207A (en) * | 2014-03-19 | 2015-10-01 | 이수지 | Self-supported type earth retaining wall structure and construction method thereof |
| CN105155549A (en) * | 2015-06-18 | 2015-12-16 | 中建三局第二建设工程有限责任公司 | Partition support system for large-area deep foundation pit under forward and backward working condition, and construction method thereof |
| CN207003449U (en) * | 2017-07-31 | 2018-02-13 | 吴科 | A kind of horizontal support structure for construction |
| CN107246016A (en) * | 2017-08-01 | 2017-10-13 | 中铁第四勘察设计院集团有限公司 | A kind of suspension type inner support system and foundation ditch construction method suitable for base pit engineering |
| CN207331704U (en) * | 2017-10-23 | 2018-05-08 | 陈煌辉 | A kind of municipal road foundation pit supporting construction being readily disassembled |
| CN209211455U (en) * | 2018-10-25 | 2019-08-06 | 广东省建筑构件工程有限公司 | A kind of deep basal pit structure of underground tunnel upper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111335321A (en) | 2020-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111335321B (en) | Deep foundation pit structure above subway tunnel and construction method thereof | |
| CN105735325B (en) | A kind of intensive permanent support assembled basement structure system and construction method | |
| WO2021026971A1 (en) | Lattice composite wellbore structure and construction method therefor | |
| CN111851519A (en) | Space truss multilayer internal support system | |
| CN113187232A (en) | Basement outer wall pre-reverse-pulling bent frame single-side formwork erecting system building construction method | |
| CN113137046A (en) | Anchored I-steel cantilever frame member and construction method | |
| CN111778990A (en) | Permanent-temporary combined assembly type inner support system and construction method | |
| CN112575789A (en) | Diagonal space truss foundation pit inner support system | |
| CN116289979A (en) | Deep foundation pit supporting construction method for underground forward and reverse synchronous construction | |
| CN213014306U (en) | Space truss multilayer internal support system | |
| CN212506301U (en) | Support system in combination assembled forever | |
| CN213867836U (en) | Temporary horizontal support changing structure of floor slab in vertical large-span vacancy | |
| CN115387378A (en) | Semi-pillarless assembly type station based on simply supported superposed side walls and floorslabs and method thereof | |
| CN113404060A (en) | Rigid rib wall type pile wall foundation pit supporting structure and construction method | |
| JPS5829922A (en) | Constructing method for underground outer wall | |
| CN217629966U (en) | Face semi-reverse construction method foundation ditch inner support structure of large-span of subway | |
| CN218786853U (en) | Underground excavation pile foundation underpinning system with closely-adhered lower penetrating existing structure | |
| CN217840090U (en) | Full-height inverted filter frame for pile-plate type retaining wall | |
| CN220394631U (en) | Pile-to-pile inclined inserting plate-anchor rod assembled retaining wall | |
| CN217353526U (en) | Deep basal pit single face template bearing structure | |
| CN108442406B (en) | Semi-reverse construction method foundation pit inner supporting structure and construction method thereof | |
| CN218912957U (en) | Protection of existing power pipeline by newly-built subway shield tunnel | |
| CN215669539U (en) | PHC precast tubular pile and steel lattice column combined diagonal brace | |
| CN212316942U (en) | Inclined support foundation pit supporting system | |
| CN219732023U (en) | Fender pile and steel diagonal bracing fender structure |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Office 2F, Huangqi Hongwei Road, Dali Town, Nanhai District, Foshan City, Guangdong Province Applicant after: Guangdong Construction Engineering Construction Co., Ltd Address before: Office 2F, Huangqi Hongwei Road, Dali Town, Nanhai District, Foshan City, Guangdong Province Applicant before: GUANGDONG PROVINCIAL ARCHITECTURAL MEMBERS ENGINEERING Co. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |