CN113266038B - Construction method for excavating underground building in foundation pit - Google Patents
Construction method for excavating underground building in foundation pit Download PDFInfo
- Publication number
- CN113266038B CN113266038B CN202110584283.9A CN202110584283A CN113266038B CN 113266038 B CN113266038 B CN 113266038B CN 202110584283 A CN202110584283 A CN 202110584283A CN 113266038 B CN113266038 B CN 113266038B
- Authority
- CN
- China
- Prior art keywords
- concrete
- construction
- column
- lattice
- supports
- 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
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a construction method for excavating an underground building of a foundation pit, which comprises the steps of dividing a construction area of a forward construction method and a construction area of an inner support, constructing lattice columns in the construction area of the inner support after finishing construction of a fender post, constructing an underground main body structure in the construction area of the forward construction method, excavating the construction area of the inner support after adopting a slope method, correspondingly installing transverse supports between exposed lattice columns and between the fender post and the underground main body structure respectively, constructing a pile top bearing platform, embedding a vertical support to support the transverse support above the pile top bearing platform, cutting off the lattice column corresponding to the vertical support, constructing a bottom plate floor slab, completing concrete construction of an upper floor slab, a structural column and an outer wall, dismantling the vertical support, the rest lattice columns and the transverse supports, and constructing other floors according to the forward construction method. The invention has simple and convenient construction, realizes the conversion of the lattice column stress system by arranging the vertical supports around the lattice column, not only facilitates the construction, but also ensures the construction safety.
Description
Technical Field
The invention relates to a construction method of an underground building, in particular to a construction method of an underground building for foundation pit excavation.
Background
At present, many construction engineering projects involve a construction process combining a reverse construction method with steel lattice column internal bracing, and a longitudinal and transverse grid supporting structure of the steel lattice column plays a vital role in ensuring the stability and safety of a foundation pit. However, because the reinforcing steel bars of the beam column joints at the lattice column are dense, the main reinforcing steel bars of the beam cannot penetrate through the lattice column, and the construction of the frame beam and the frame column is influenced. Therefore, the lattice columns need to be cut off before the frame beams and columns are constructed, but the cutting of the lattice columns can influence the overall stress of the inner support system, and the safety of the foundation pit cannot be guaranteed.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a construction method for excavating an underground building in a foundation pit, which is convenient to construct and high in construction safety.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method for excavating an underground building in a foundation pit comprises the following steps:
(1) Determining a total construction area, dividing the total construction area into a forward construction method construction area and an inner support post-construction area according to construction requirements, and after the construction of the fender pile is completed in the total construction area, constructing lattice columns in the inner support post-construction area; when the lattice column is constructed, firstly, a pile hole is excavated to a specified elevation, then the lattice column is installed in the pile hole, the upper end of the lattice column extends out of the pile hole, concrete is poured in the pile hole to the elevation of the bottom of a foundation pit, the concrete pouring elevation is lower than the designed elevation of the bottom layer of a building to be constructed, the lower end of the lattice column extends into the concrete, after the concrete is solidified, sand is poured into the pile hole to the position of the opening of the pile, and transverse supports are horizontally installed between two adjacent lattice columns and at the positions of the tops of the two adjacent lattice columns and are respectively and fixedly connected with the two lattice columns;
(2) Excavating a construction area of a sequential construction method to the elevation of the bottom of a foundation pit, completing construction of an underground main body structure in the construction area of the sequential construction method, horizontally installing transverse supports between a fender post and an adjacent latticed column and at the top of the fender post, respectively and fixedly connecting the transverse supports, and horizontally installing transverse supports between the underground main body structure and the adjacent latticed column and at the top of the latticed column, respectively and fixedly connecting the transverse supports;
(3) Adopting a slope-releasing method to excavate a construction area after the internal support is carried out, and in the excavation process, when the exposed parts of the adjacent lattice columns, the exposed parts of the enclosure piles and the adjacent lattice columns or the exposed parts of the underground main structure and the adjacent lattice columns respectively correspond to floor elevations outside the top layer and the bottom layer in the underground main structure, installing transverse supports between the exposed parts of the adjacent lattice columns, between the exposed parts of the enclosure piles and the exposed parts of the adjacent lattice columns or between the underground main structure and the exposed parts of the adjacent lattice columns at positions above the floor elevations in the corresponding underground main structure and respectively fixedly connecting the transverse supports with the exposed parts of the adjacent lattice columns until the position is excavated to the elevation at the bottom of the foundation pit;
(4) Excavating bearing platform concave holes at the position of the bottom of a foundation pit corresponding to the tops of concrete columns in pile holes and supporting a bearing platform template, wherein vertical supports are vertically arranged at the positions, around each lattice column, between the bearing platform template and adjacent transverse supports above the bearing platform template, and the number of the vertical supports around each lattice column is the same as that of the transverse supports corresponding to the vertical supports and is respectively arranged correspondingly;
(5) Cutting off lattice columns between pile hole concrete columns at two ends of a vertical support and a transverse support, binding bottom plate reinforcing steel bars at the bottom of a foundation pit in a construction area after the inner support, pouring concrete to form a bottom floor, binding floor plate reinforcing steel bars corresponding to the standard height of the floor, structural column reinforcing steel bars and outer wall reinforcing steel bars corresponding to the floor after the inner support according to the elevation of an adjacent floor above the bottom floor in an underground main body structure, pouring floor plate concrete, structural column concrete and corresponding outer wall concrete at the standard height, and pouring plain concrete in a space between the outer wall and a fender post;
(6) And (5) after the floor concrete, the structural column concrete, the outer wall concrete and the plain concrete in the step (5) are solidified, removing the vertical supports, the rest latticed columns and the rest transverse supports, and sequentially constructing the floor concrete, the structural column concrete, the outer wall concrete and the plain concrete of the corresponding floors according to the elevation of each floor in the underground main structure in a forward construction manner.
In the invention, the construction of the forward construction method and the construction of the supported construction area respectively adopt the forward construction method and the reverse construction method, and the underground main structure of the forward construction method construction area is used as the support after the construction of the underground main structure of the forward construction method construction area is completed. When a construction area is excavated to the bottom of a foundation pit after supporting, in order to solve potential safety hazards caused by dismantling the lattice column, the whole structure needs to be supported. Through set up vertical braces around lower floor's lattice column, a pile bolck cushion cap is pour at the top of stake hole concrete column, with vertical braces's lower extreme pre-buried in it, vertical braces's upper end then supports on the horizontal support that corresponds, when cutting off the lattice column of vertical braces department, vertical braces can replace the lattice column of being cut off to support remaining lattice column and horizontal support in the top, the position that lattice column was cut off, when carrying out structure post reinforcing bar and floor reinforcing bar construction, lattice column just can not lead to the fact the stopping to corresponding reinforcing bar, can enough carry out the construction of floor and structure post like this, there is the safety guarantee that vertical braces provided again, in addition, fill plain concrete between outer wall and fender pile, can transmit the power that the bored concrete pile bore to the floor equally, on the underground major structure that the structure was accomplished, construction's security has further been improved.
In conclusion, the invention has the beneficial effects that: the invention has simple and convenient construction, realizes the conversion of the lattice column stress system by arranging the vertical supports around the lattice column, not only facilitates the construction, but also ensures the construction safety.
Drawings
For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:
FIG. 1 is a schematic diagram of excavation of a construction area after inner support by a slope-releasing method in the invention;
FIG. 2 is a schematic diagram of the conversion construction of the vertical support stress system in the invention;
fig. 3 is a schematic diagram of the construction of the bottom layer of the foundation pit and the adjacent floor slabs thereof.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the method for constructing a foundation pit excavation underground structure according to the present embodiment includes the steps of:
(1) Determining a total construction area, dividing the total construction area into a forward construction method construction area and an inner support post-construction area according to construction requirements, and after the construction of the fender post is completed in the total construction area, constructing the lattice column 1 in the inner support post-construction area; when the lattice column 1 is constructed, firstly, a pile hole is excavated to a designated elevation, then the lattice column 1 is installed in the pile hole, the upper end of the lattice column 1 extends out of the pile hole, concrete is poured in the pile hole to the elevation of the bottom of a foundation pit, the concrete pouring elevation is lower than the designed elevation of the bottom layer of a building to be constructed, the lower end of the lattice column 1 extends into the concrete, after the concrete is solidified, sand is poured in the pile hole to the position of the opening of the pile, and transverse supports 2 are horizontally installed between two adjacent lattice columns 1 and at the top of the two adjacent lattice columns and are respectively and fixedly connected with the two lattice columns;
(2) Excavating a construction area of a sequential construction method to the elevation of the bottom of a foundation pit, completing construction of an underground main body structure in the construction area of the sequential construction method, horizontally installing transverse supports 2 between a fender post and an adjacent lattice column 1 and at the top of the fender post, respectively and fixedly connecting the transverse supports 2, and horizontally installing transverse supports 2 between the underground main body structure and the adjacent lattice column 1 and at the top of the lattice column 1, respectively and fixedly connecting the transverse supports;
(3) Adopting a slope-releasing method to excavate a construction area after the internal support, and in the excavation process, when the exposed parts of the adjacent lattice columns 1, the exposed parts of the enclosure piles and the exposed parts of the adjacent lattice columns 1 or the exposed parts of the underground main structure and the adjacent lattice columns 1 respectively correspond to floor elevations outside the top layer and the bottom layer in the underground main structure, installing transverse supports 2 between the exposed parts of the adjacent lattice columns 1, between the exposed parts of the enclosure piles and the exposed parts of the adjacent lattice columns 1 or between the underground main structure and the exposed parts of the adjacent lattice columns 1 at positions above the floor elevations in the corresponding underground main structure respectively and fixedly connecting the transverse supports with the underground main structure until the foundation pit is excavated to the bottom elevation;
(4) Excavating bearing platform concave holes at the bottom of a foundation pit corresponding to the top of each pile hole concrete column and supporting a bearing platform template, wherein vertical supports 3 are vertically arranged at the positions, which are around each lattice column 1 and are positioned between the bearing platform template and the adjacent transverse supports 2 above the bearing platform template, the number of the vertical supports 3 around each lattice column 1 is consistent with the number of the corresponding transverse supports 2 and are respectively and correspondingly arranged, the lower ends of the vertical supports 3 extend into the bearing platform template, the upper ends of the vertical supports 3 abut against the lower side surfaces of the corresponding transverse supports 2, concrete is poured into the bearing platform template to be solidified to form a pile top bearing platform 4, the lower ends of the vertical supports 3 are embedded in the pile top bearing platform 4, and the vertical supports 3 support the transverse supports 2 above the vertical supports;
(5) Cutting off lattice columns 1 between pile hole concrete columns at two ends of a vertical support 3 and a transverse support 2, binding floor slab steel bars at the bottom of a foundation pit in a construction area after an internal support is carried out, pouring concrete to form a bottom floor slab, binding floor slab steel bars corresponding to the height of the floor slab, structural column steel bars and outer wall steel bars corresponding to the floor slab in the construction area after the internal support is carried out according to the elevation of an adjacent floor slab above the bottom floor slab in the underground main body structure, pouring floor slab concrete, structural column concrete and corresponding outer wall concrete at the height of the floor slab, and pouring plain concrete in a space between the outer wall and a fender post;
(6) After the floor slab concrete, the structural column concrete, the outer wall concrete and the plain concrete in the step 5 are solidified, the vertical supports 3, the rest lattice columns 1 and the rest transverse supports 2 are removed, and the floor slab concrete, the structural column concrete, the outer wall concrete and the plain concrete of the corresponding floors are sequentially constructed corresponding to the elevations of each floor slab in the underground main structure according to a sequential construction method.
In the specific implementation process, after the adjacent floor slabs above the bottom floor slab are poured and formed, a plurality of inclined struts are respectively and fixedly connected with the enclosure piles, the supporting capacity of the enclosure piles is further improved, and the construction safety is improved.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. A construction method for excavating an underground building in a foundation pit is characterized by comprising the following steps: the method comprises the following steps:
(1) Determining a total construction area, dividing the total construction area into a forward construction method construction area and an inner support post construction area according to construction requirements, and after the construction of the fender pile is completed in the total construction area, constructing lattice columns in the inner support post construction area; when the lattice column is constructed, firstly, a pile hole is excavated to a designated elevation, then the lattice column is installed in the pile hole, the upper end of the lattice column extends out of the pile hole, concrete is poured in the pile hole to the elevation of the bottom of a foundation pit, the concrete pouring elevation is lower than the designed elevation of the bottom of a building to be constructed, the lower end of the lattice column extends into the concrete, after the concrete is solidified, sand is poured in the pile hole to the position of the opening of the pile, and a transverse support is horizontally installed between two adjacent lattice columns and at the position of the top of the two adjacent lattice columns and is respectively and fixedly connected with the two lattice columns;
(2) Excavating a construction area of a sequential construction method to the elevation of the bottom of a foundation pit, completing construction of an underground main body structure in the construction area of the sequential construction method, horizontally installing transverse supports between a fender post and an adjacent latticed column and at the top of the fender post, respectively and fixedly connecting the transverse supports, and horizontally installing transverse supports between the underground main body structure and the adjacent latticed column and at the top of the latticed column, respectively and fixedly connecting the transverse supports;
(3) Adopting a slope-laying method to excavate a construction area after internal support, and in the excavation process, when the exposed parts of adjacent lattice columns, the exposed parts of the enclosure piles and the exposed parts of the adjacent lattice columns or the exposed parts of the underground main structure and the adjacent lattice columns respectively correspond to floor elevations outside the top layer and the bottom layer in the underground main structure, installing transverse supports between the exposed parts of the adjacent lattice columns, between the exposed parts of the enclosure piles and the exposed parts of the adjacent lattice columns or between the underground main structure and the exposed parts of the adjacent lattice columns at positions above the floor elevations in the corresponding underground main structure respectively and fixedly connecting the transverse supports with the underground main structure until the foundation pit is excavated to the elevation at the bottom of the foundation pit;
(4) Excavating bearing platform concave holes at the position of the bottom of a foundation pit corresponding to the top of each pile hole concrete column and supporting a bearing platform template, wherein vertical supports are vertically arranged around each lattice column and at the position between the bearing platform template and the adjacent transverse supports above the bearing platform template, the number of the vertical supports around each lattice column is consistent with that of the transverse supports corresponding to the vertical supports, the vertical supports are respectively arranged correspondingly, the lower ends of the vertical supports extend into the bearing platform template, the upper ends of the vertical supports are abutted against the lower side surfaces of the transverse supports corresponding to the vertical supports, concrete is poured into the bearing platform template to be solidified to form a pile top bearing platform, the lower ends of the vertical supports are embedded in the pile top bearing platform, and the vertical supports support the transverse supports above the vertical supports;
(5) Cutting off lattice columns between pile hole concrete columns at two ends of a vertical support and a transverse support, binding floor slab steel bars at the bottom of a foundation pit in a construction area after the inner support, pouring concrete to form a bottom floor slab, binding floor slab steel bars corresponding to the height of the floor slab, structural column steel bars and outer wall steel bars corresponding to the floor slab in the construction area after the inner support according to the elevation of an adjacent floor slab above the bottom floor slab in the underground main body structure, pouring floor slab concrete, structural column concrete and corresponding outer wall concrete at the elevation, and pouring plain concrete in a space between the outer wall and a fender pile;
(6) And (5) after the floor slab concrete, the structural column concrete, the outer wall concrete and the plain concrete in the step (5) are solidified, removing the vertical supports, the rest latticed columns and the transverse supports, and sequentially constructing the floor slab concrete, the structural column concrete, the outer wall concrete and the plain concrete of the corresponding floors according to the elevation of each floor slab in the underground main structure according to a sequential construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584283.9A CN113266038B (en) | 2021-05-27 | 2021-05-27 | Construction method for excavating underground building in foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584283.9A CN113266038B (en) | 2021-05-27 | 2021-05-27 | Construction method for excavating underground building in foundation pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113266038A CN113266038A (en) | 2021-08-17 |
| CN113266038B true CN113266038B (en) | 2023-01-24 |
Family
ID=77233239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110584283.9A Active CN113266038B (en) | 2021-05-27 | 2021-05-27 | Construction method for excavating underground building in foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113266038B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277844B (en) * | 2022-01-24 | 2023-07-25 | 中国建筑第八工程局有限公司 | Construction method of underground structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210975827U (en) * | 2019-08-31 | 2020-07-10 | 杭州悦为科技有限公司 | Deep foundation pit reinforced concrete inner support oblique trestle structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101242017B1 (en) * | 2011-03-18 | 2013-03-18 | 주식회사 한빛구조엔지니어링 | The simultaneous construction method of ground and underground structure using ground core pre-construction and latticed lintel beam in core |
| CN108678423B (en) * | 2018-08-06 | 2023-12-08 | 中建研科技股份有限公司 | Vertical conversion supporting structure is demolishd in reverse direction to reinforced concrete structure |
| CN110397043A (en) * | 2019-07-18 | 2019-11-01 | 中国建筑第四工程局有限公司 | A kind of pattern foundation pit supporting structure inner support system and the three-in-one method of basement structure system |
| CN111485578A (en) * | 2020-04-24 | 2020-08-04 | 安徽省建筑科学研究设计院 | Stepped edge forward and backward building construction method |
-
2021
- 2021-05-27 CN CN202110584283.9A patent/CN113266038B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210975827U (en) * | 2019-08-31 | 2020-07-10 | 杭州悦为科技有限公司 | Deep foundation pit reinforced concrete inner support oblique trestle structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113266038A (en) | 2021-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103485360A (en) | Steel platform tower crane foundation and construction method thereof | |
| KR102084829B1 (en) | Top-down method using precast-concrete colum | |
| CN114790757A (en) | Cover-excavation top-down construction V-shaped column structure and construction method thereof | |
| CN209855277U (en) | Conversion layer structure for underground added layer of existing building | |
| KR102290076B1 (en) | The construction method using a exterio wall of undergound structure | |
| CN113266038B (en) | Construction method for excavating underground building in foundation pit | |
| CN103122642B (en) | Construction method of vertical post support change | |
| CN113417300A (en) | Slope support system and construction method thereof | |
| CN210288419U (en) | Reverse column diagonal bracing reinforcing system for large-span reverse foundation pit | |
| CN116289979A (en) | Deep foundation pit supporting construction method for underground forward and reverse synchronous construction | |
| JP2020197015A (en) | Construction method of foundation | |
| JPH09144049A (en) | Temporary holding method of construction | |
| AU2020100004A4 (en) | A Method Of Constructing A Column, A Subterranean Structure, And A Structure Made From The Method | |
| CN210117724U (en) | Garage foundation structure | |
| CN111519924B (en) | Vibration isolation design construction method for existing building right above subway | |
| CN111075452A (en) | Geotechnical mixed vertical shaft engineering supporting system and vertical shaft construction method | |
| KR100593203B1 (en) | a deck supportframe and a construction methed | |
| CN216338977U (en) | Bridge is with striding rebuilding device and bridge | |
| KR102583537B1 (en) | Top-down construction method for uneven-slope site | |
| CN219732023U (en) | Fender pile and steel diagonal bracing fender structure | |
| CN217581421U (en) | Post-cast strip braced system | |
| JPH07138972A (en) | Construction method for underground skeleton | |
| CN217998096U (en) | Foundation pit support temporary supporting device | |
| CN212223887U (en) | Movable post-cast strip pouring frame | |
| CN219491038U (en) | Advanced reinforcing structure for slope toe of abandoned mine slope |
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 |