CN111851523B - Settlement deviation prevention method for foundation pit construction - Google Patents
Settlement deviation prevention method for foundation pit construction Download PDFInfo
- Publication number
- CN111851523B CN111851523B CN202010776651.5A CN202010776651A CN111851523B CN 111851523 B CN111851523 B CN 111851523B CN 202010776651 A CN202010776651 A CN 202010776651A CN 111851523 B CN111851523 B CN 111851523B
- Authority
- CN
- China
- Prior art keywords
- supporting
- foundation pit
- pile group
- polygonal
- pile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- 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
- 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
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A settlement deviation prevention method for foundation pit construction relates to the field of road pile foundation construction, comprises 7 main steps, and mainly ensures stability of a fence during settlement. When in application, the foundation pit supporting device is required. The foundation pit supporting device comprises a supporting pile group which is connected end to form a ring shape, wherein the supporting pile group consists of a plurality of supporting piles, the supporting piles are internally and fixedly connected with inner waist beams and are adjacent to each other, inner polygonal supporting frames are formed in the supporting pile group after the inner waist beams are connected end to end, the supporting piles are externally and slidably connected with outer waist beams and are adjacent to each other, and outer polygonal supporting frames are formed outside the supporting pile group after the outer waist beams are connected end to end. Compared with the prior art, the invention has the beneficial effects that: the foundation pit fence subsides the stability when guaranteeing the foundation pit fence subsides when unavoidable, makes the vertical subsidence of foundation pit fence, makes the foundation pit fence atress even as far as, subsides the scope little, guarantees the stability of foundation pit face. The problem of skew, dislocation appear when solving foundation ditch rail and subsiding in the past.
Description
Technical Field
The invention relates to the field of road pile foundation construction, in particular to a soft soil settlement soil foundation pit fence supporting technology.
Background
Ground subsidence is the ground elevation loss formed under the combined action of natural factors and human factors. The natural factors include structural subsidence, earthquake, volcanic activity, climate change, ground stress change, natural consolidation of soil mass and the like. The human factors mainly comprise the development and utilization of underground fluid resources (underground water, petroleum, natural gas and the like), the exploitation of solid mineral products, karst collapse, consolidation and settlement related to engineering construction in soft soil areas and the like. China is a serious disaster area of ground settlement, particularly a Yangtze river district, and the reasons for settlement in the Yangtze river district are mainly caused by geological factors, water pumping factors and construction engineering factors. The hazards of ground settlement are mainly: (1) demolition of buildings and production facilities; (2) is not beneficial to the construction cause and the resource development. The area where the ground subsidence occurs belongs to the zone with unstable stratum, more construction investment is needed when urban construction and resource development are carried out, and the production capacity is limited; (3) causing the seawater to flow backwards. Ground subsidence is mostly found in coastal areas. When the ground subsides to close the sea surface, the seawater flows backward, so that the soil and the underground water are salinized. In construction work, the problem of settlement is one of the troublesome problems, which are accompanied by the whole construction process and maintenance process. When foundation ditch of the earlier stage was dug and is built, the weak soil around the foundation ditch subsides and can cause the foundation ditch to warp, and traditional fender pile is very poor in the ability of combatting deformation, causes the infiltration very easily.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a settlement deviation preventing method for foundation pit construction, which mainly ensures the stability of a foundation pit fence during settlement when the settlement of the foundation pit fence can not be avoided, so that the foundation pit fence can be settled vertically, the foundation pit fence is stressed uniformly and has a small settlement range as far as possible, and the stability of a foundation pit surface is ensured. The problem of skew, dislocation appear when solving foundation ditch rail and subsiding in the past.
In order to solve the technical problems, the invention solves the technical problems by the following technical scheme, and the method for preventing the settlement deviation in the foundation pit construction comprises the following steps: before the foundation pit is excavated, a supporting pile group is arranged on the periphery of the foundation pit to surround the foundation pit, and the depth of the supporting pile group is greater than the excavation depth of the foundation pit; and B: the inner side of each support pile in the support pile group is fixedly connected with an inner waist beam, the inner waist beams are connected with the support pile group end to form a regular polygonal inner polygonal support frame, the outer side of each support pile is connected with an outer waist beam, the outer waist beams are connected with the support pile group end to form a regular polygonal outer polygonal support frame, the outer polygonal support frame is placed on the ground, the support pile group can slide on the outer polygonal support frame, and then a plurality of sensors are mounted on the outer polygonal support frame; and C: arranging a relief well in the foundation pit area, wherein the depth of the relief well is greater than the excavation depth of the foundation pit, arranging a relief well outside the supporting pile group, the depth of the relief well is greater than the excavation depth of the foundation pit and less than the insertion depth of the supporting pile group, then excavating the foundation pit, and always ensuring the level of the outer polygonal supporting frame in the whole excavation process; step D: in the excavation process, the dredging well pumps water and dredges the excavation area, and the pressure reducing well reduces the pressure of the soil layer outside the excavation area; step E: detecting the inclination state of the outer polygonal supporting frame through a sensor in the excavation process and the excavation completion, correcting if the outer polygonal supporting frame is inclined, and ensuring the vertical settlement of the whole supporting pile group through the horizontal posture of the outer polygonal supporting frame; step F: after the supporting pile group is settled, mounting additional baffles at the top of the supporting pile, and fixedly connecting adjacent additional baffles to ensure that the top of the supporting pile group always extends out of the foundation pit; step G: after excavation of the foundation pit is finished and the supporting pile group is settled stably, soil solidification treatment is carried out on the bottom of the foundation pit, then pile foundation pouring is carried out, and finally film waterproof sealing is carried out between the bottom of the pile foundation and the supporting pile.
In the above technical solution, preferably, in step F, the adjacent additional baffles are fixed to each other by cement pouring
In the above technical solution, preferably, in step B, the outer polygonal support frame is in close contact with the support pile group.
The foundation pit supporting device for implementing the foundation pit construction closed dewatering method comprises a supporting pile group which is connected end to form a ring shape, wherein the supporting pile group consists of a plurality of supporting piles, an inner waist beam is fixedly connected in each supporting pile, an inner polygonal supporting frame is formed in the supporting pile group after the inner waist beams are connected end to end adjacently, an outer waist beam is connected outside each supporting pile in a sliding mode, and an outer polygonal supporting frame is formed outside the supporting pile group after the outer waist beams are connected end to end adjacently.
In the above technical solution, preferably, the top of the support pile is provided with an upper connecting groove, and the support pile is connected with the additional baffle through the upper connecting groove.
In the above technical solution, preferably, the side edge of the additional baffle is provided with a side connecting groove, the additional baffle is connected with the side connecting groove through the side connecting groove, and the side connecting groove is provided with an additional grouting hole.
In the above technical scheme, preferably, the outer wale is further provided with a limiting plate, and the limiting plate is in close contact with the support piles.
In the above technical solution, preferably, the bottom of the outer polygonal supporting frame is provided with a horizontal direction corrector.
The foundation pit construction settlement deviation prevention method is mainly applied to soft soil foundations in the long and triangular regions, the known long and triangular regions mainly comprise marine facies and lake facies, and particularly settlement is severe in coastal reclamation areas. For a small-range foundation pit, such as a pile foundation of an elevated road, before excavation, only the supporting piles are embedded in the range of the foundation pit, and a fence is formed by pouring cement between the supporting piles for fixing and preventing water. But can cause the settlement of the topography around the fender pile at foundation ditch excavation in-process for the atress of fender pile is uneven, lets the cement that plays the connection effect in the fender pile group become to tear the deformation easily, not only influences fixed and waterproof effect, more influences the work progress of excavation and pouring. Therefore, in the application, an inner waist beam is fixed on each supporting pile in the supporting pile group, all the inner waist beams are connected to form an inner polygonal supporting frame in the same horizontal plane, the inner polygonal supporting frame is arranged on the upper portion of the supporting pile group and is enabled to act together with the bottom surface of a foundation pit, the supporting pile group is enabled to form a stressed whole, namely the inner polygonal supporting frame serves as a main supporting structure, and the bottom surface of the foundation pit serves as an auxiliary supporting structure. All be fixed with outer waist roof beam on strutting the stake outside the pile group on every, let all outer waist roof beams connect and form the outer polygon carriage in same horizontal plane, outer polygon carriage exposes outside the foundation ditch and guarantees through the horizontal direction unscrambler that outer polygon carriage is in the horizontality all the time, when carrying out the gesture correction to strutting the pile group through outer polygon carriage at every turn like this, strutting the pile group and being the bulk motion under the effect of interior polygon carriage, can not exert too big power to the cement pouring between the fender stake, the sealing of whole pile group has been guaranteed, the form of strutting the pile group has also been guaranteed simultaneously.
Compared with the prior art, the invention has the beneficial effects that: the foundation pit fence subsides the stability when guaranteeing the foundation pit fence subsides when unavoidable, makes the vertical subsidence of foundation pit fence, makes the foundation pit fence atress even as far as, subsides the scope little, guarantees the stability of foundation pit face. The problem of skew, dislocation appear when solving foundation ditch rail and subsiding in the past.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention.
Fig. 2 is a schematic top view of the support pile assembly of the present invention.
Fig. 3 is a schematic view of a support pile of the present invention.
Fig. 4 is a schematic view of an additional baffle of the present invention.
Fig. 5 is a side view of a support pile assembly of the present invention.
Fig. 6 is a side view of the support pile assembly with additional retaining plate.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and the attached drawings.
Example 1: as shown in fig. 1 to 6, the foundation pit supporting device comprises a supporting pile group 1 which is connected end to form a ring shape, wherein the supporting pile group 1 is composed of a plurality of supporting piles 11, the supporting piles 11 are sealed and fixed through cement pouring, and the height of the supporting piles 11 is consistent. The inner waist beam 12 is fixedly connected in the support pile 11, an inner polygonal support frame 122 is formed in the support pile group 1 after the adjacent inner waist beams 12 are connected end to end, the inner waist beams 12 are fixedly connected and can be fixed by various means such as welding, riveting and the like, and the inner polygonal support frame 122 keeps the same shape in the horizontal direction. The outer sliding connection of fender pile 11 have outer waist rail 13, outer waist rail 13 on still be provided with limiting plate 14, limiting plate 14 with fender pile 11 in close contact with and fixed connection. And after the adjacent outer waist beams 13 are connected end to end, an outer polygonal supporting frame 133 is formed outside the supporting pile group 1, the outer waist beams 13 are fixedly connected and can be fixed by various means such as welding, riveting and the like, and the outer polygonal supporting frame 133 keeps the same shape in the horizontal direction and can slide or be fixed on the limiting plate 14. The bottom of the outer polygonal supporting frame 133 is provided with a horizontal direction corrector 15, the horizontal direction corrector 15 is in contact with the ground, the outer polygonal supporting frame 133 is also provided with a horizontal sensor, and the horizontal sensor is communicated with the horizontal direction corrector 15. The top of the supporting pile 11 is provided with an upper connecting groove 16, and the supporting pile 11 is connected with the additional baffle 4 through the upper connecting groove 16. The side edges of the additional baffles 4 are provided with side connecting grooves 42, and the additional baffles 4 are connected with each other through the side connecting grooves 42 and are fixed by pouring cement through additional grouting holes. The additional baffle 4 and the support piles 11 can be sealed by cement.
A settlement deviation preventing method for foundation pit construction comprises the following steps: before the foundation pit is excavated, the supporting pile group 1 is arranged on the periphery of the foundation pit to surround the foundation pit, and the depth of the supporting pile group 1 is greater than the excavation depth of the foundation pit. The heights of the support piles in the support pile group 1 are consistent, and the heights of the support piles extending out of the ground are also consistent. The cross section of the supporting pile group 1 is preferably regular polygon or round, and the length of each side is consistent as much as possible. And the supporting piles in the supporting pile group 1 are fixed and sealed by cement. And B: the inner side of each support pile 11 in the support pile group 1 is fixedly connected with an inner waist beam 12, and then the inner waist beams 12 are connected end to end in the support pile group 1 to form a regular polygonal inner polygonal support frame 122, and the regular polygonal inner polygonal support frame is preferably fixed by welding or riveting when being connected. At this time, the inner polygonal supporting frame 122 is in a completely horizontal state, the included angle between the inner polygonal supporting frame and the horizontal line is 0, and each supporting pile 11 is fixedly connected. The outer wale 13 is connected to the outer side of each support pile, and then the outer wale 13 is connected end to end outside the support pile group to form a regular polygonal outer polygonal support frame 133, and the regular polygonal outer polygonal support frame is preferably fixed by welding or riveting when being connected. The outer polygonal supporting frame 133 is placed on the ground through the horizontal straightener 15, the supporting pile group 1 can slide on the outer polygonal supporting frame 133 through the limiting plate 14, and then a plurality of sensors are installed on the outer polygonal supporting frame 133, wherein the sensors are horizontal sensors.
And C: the foundation pit excavation method is characterized in that a dredging well 2 is arranged in a foundation pit area, the depth of the dredging well 2 is larger than the excavation depth of the foundation pit, a relief well 3 is arranged outside a supporting pile group 1, the depth of the relief well 3 is larger than the excavation depth of the foundation pit, smaller than the insertion depth of the supporting pile group 1, the foundation pit is excavated, and the outer polygonal supporting frame 133 is always kept horizontal through a horizontal direction corrector 15 in the whole excavation process. Step D: in the excavation process, the dredging well 2 pumps water and dredges the excavation area, and the decompression well 3 decompresses the soil layer outside the excavation area. Step E: the inclination state of the outer polygonal supporting frame 133 is detected through a sensor in the excavation process and the excavation end, if the outer polygonal supporting frame 133 is inclined, correction is carried out, and the supporting pile group 1 is guaranteed to be wholly vertically settled through the horizontal posture of the outer polygonal supporting frame 133; step F: after the supporting pile group 1 is settled, if the settlement is serious, the additional baffle 4 can be installed at the top of the supporting pile 11, and the adjacent additional baffles 4 are fixedly connected, so that the top of the supporting pile group 1 is ensured to extend out of the foundation pit all the time. The support piles 11 are fixed with the additional baffle 4 and the additional baffle 4 through cement. Step G: after excavation of the foundation pit is finished and the supporting pile group 1 is settled and stabilized, soil solidification treatment is carried out on the bottom of the foundation pit, then pile foundation pouring is carried out, and finally film waterproof sealing is carried out between the bottom of the pile foundation and the supporting piles 11.
The method is suitable for small foundation pits, and for the small foundation pits, the support pile group 1 after the cement fixation can be regarded as a stressed whole and can be better corrected. In order to be stressed uniformly, the method limits the structure of the support pile group 1, preferably to be regular polygon and round, so that the inner polygon support frame 122 and the outer polygon support frame 133 can be stressed uniformly, and the inner polygon support frame 122 and the outer polygon support frame 133 are prevented from being separated from the support pile group 1. When excavation and follow-up pouring of foundation ditch, all monitor the horizontal gesture of outer polygon carriage 133 through the sensor, if outer polygon carriage 133 inclines, then with data transmission to horizontal direction unscrambler 15 through the sensor, let horizontal direction unscrambler 15 automatic correction, horizontal direction unscrambler 15 includes controller and hydraulic column usually, or other jack-up adjusting equipment, like jack etc.. For soft soil in the long and triangular regions, settlement cannot be avoided, the method is characterized in that the supporting pile group 1 is integrally corrected through the outer polygonal supporting frame 133 outside the foundation pit, the stability of the settlement angle and the position of the supporting pile group 1 is guaranteed, the influence on later-stage pile foundation pouring is avoided, and accidents such as water seepage and the like caused by the damage of the supporting pile group 1 during settlement are avoided.
Claims (4)
1. A method for preventing settlement and deviation in foundation pit construction is characterized by comprising the following steps,
step A: before the foundation pit is excavated, a supporting pile group is arranged on the periphery of the foundation pit to surround the foundation pit, and the depth of the supporting pile group is greater than the excavation depth of the foundation pit;
and B: the inner side of each support pile in the support pile group is fixedly connected with an inner waist beam, the inner waist beams are connected with the support pile group end to form a regular polygonal inner polygonal support frame, the outer side of each support pile is connected with an outer waist beam, the outer waist beams are connected with the support pile group end to form a regular polygonal outer polygonal support frame, the outer polygonal support frame is placed on the ground, the support pile group can slide on the outer polygonal support frame, and then a plurality of sensors are mounted on the outer polygonal support frame;
and C: arranging a relief well in the foundation pit area, wherein the depth of the relief well is greater than the excavation depth of the foundation pit, arranging a relief well outside the supporting pile group, the depth of the relief well is greater than the excavation depth of the foundation pit and less than the insertion depth of the supporting pile group, then excavating the foundation pit, and always ensuring the level of the outer polygonal supporting frame in the whole excavation process;
step D: in the excavation process, the dredging well pumps water and dredges the excavation area, and the pressure reducing well reduces the pressure of the soil layer outside the excavation area;
step E: detecting the inclination state of the outer polygonal supporting frame through a sensor in the excavation process and after the excavation is finished, correcting if the outer polygonal supporting frame is inclined, and ensuring the whole supporting pile group to be vertically settled through the horizontal posture of the outer polygonal supporting frame;
step F: after the supporting pile group is settled, mounting additional baffles at the top of the supporting pile, and fixedly connecting adjacent additional baffles to ensure that the top of the supporting pile group always extends out of the foundation pit;
step G: after excavation of the foundation pit is finished and the supporting pile group is settled stably, soil solidification treatment is carried out on the bottom of the foundation pit, then pile foundation pouring is carried out, and finally film waterproof sealing is carried out between the bottom of the pile foundation and the supporting pile.
2. The method for preventing settlement and deviation in foundation pit construction according to claim 1, wherein in step F, the adjacent additional barriers are fixed to each other by cement casting.
3. The method for preventing settlement deviation in foundation pit construction according to claim 1, wherein in the step B, the outer polygonal support frame is in close contact with the support pile group.
4. A foundation pit supporting device for implementing the foundation pit construction settlement deviation prevention method of claim 1, comprising a supporting pile group which is connected end to form a ring shape, wherein the supporting pile group is composed of a plurality of supporting piles, and is characterized in that an inner waist beam is fixedly connected in each supporting pile, an inner polygonal supporting frame is formed in each supporting pile group after the adjacent inner waist beams are connected end to end, the supporting piles are connected with outer waist beams in a sliding manner, an outer polygonal supporting frame is formed outside each supporting pile group after the adjacent outer waist beams are connected end to end, an upper connecting groove is arranged at the top of each supporting pile, each supporting pile is connected with an additional baffle through the upper connecting groove, side connecting grooves are arranged at the side edges of the additional baffles, the additional baffles are connected with each other through the side connecting grooves, additional grouting holes are arranged on the side connecting grooves, and a limiting plate is further arranged on the outer waist beams, the limiting plate is in close contact with the supporting piles, and a horizontal straightener is arranged at the bottom of the outer polygonal supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010776651.5A CN111851523B (en) | 2020-08-05 | 2020-08-05 | Settlement deviation prevention method for foundation pit construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010776651.5A CN111851523B (en) | 2020-08-05 | 2020-08-05 | Settlement deviation prevention method for foundation pit construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111851523A CN111851523A (en) | 2020-10-30 |
| CN111851523B true CN111851523B (en) | 2021-10-29 |
Family
ID=72971130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010776651.5A Active CN111851523B (en) | 2020-08-05 | 2020-08-05 | Settlement deviation prevention method for foundation pit construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111851523B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699998A (en) * | 2021-05-07 | 2021-11-26 | 金华职业技术学院 | Method for controlling foundation pit settlement deviation |
| CN113550327B (en) * | 2021-08-18 | 2022-07-12 | 东晟兴诚集团有限公司 | Deformation-preventing combined support for foundation pit and pit bottom reinforcing construction method |
| CN115522561B (en) * | 2022-10-14 | 2023-12-15 | 通号工程局集团有限公司 | Construction method for foundation soil mold of tower crane of building engineering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202830938U (en) * | 2012-10-18 | 2013-03-27 | 上海强劲地基工程股份有限公司 | Supporting structure for controlling foundation trench stability |
| CN103993604A (en) * | 2014-06-05 | 2014-08-20 | 中国建筑材料工业地质勘查中心广东总队 | Scattered piled anchor foundation pit supporting structure |
| CN205224061U (en) * | 2015-11-25 | 2016-05-11 | 中国铁建港航局集团有限公司 | A structure for being directed at steel overhead bin swiftly rectifies |
| JP2016075149A (en) * | 2016-01-27 | 2016-05-12 | 大成建設株式会社 | Pile reinforcement structure for existing building, and construction method for the pile reinforcement structure |
| CN108330988A (en) * | 2018-04-17 | 2018-07-27 | 安徽省建筑科学研究设计院 | A kind of polygon foundation pit supporting construction and construction method |
-
2020
- 2020-08-05 CN CN202010776651.5A patent/CN111851523B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202830938U (en) * | 2012-10-18 | 2013-03-27 | 上海强劲地基工程股份有限公司 | Supporting structure for controlling foundation trench stability |
| CN103993604A (en) * | 2014-06-05 | 2014-08-20 | 中国建筑材料工业地质勘查中心广东总队 | Scattered piled anchor foundation pit supporting structure |
| CN205224061U (en) * | 2015-11-25 | 2016-05-11 | 中国铁建港航局集团有限公司 | A structure for being directed at steel overhead bin swiftly rectifies |
| JP2016075149A (en) * | 2016-01-27 | 2016-05-12 | 大成建設株式会社 | Pile reinforcement structure for existing building, and construction method for the pile reinforcement structure |
| CN108330988A (en) * | 2018-04-17 | 2018-07-27 | 安徽省建筑科学研究设计院 | A kind of polygon foundation pit supporting construction and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111851523A (en) | 2020-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111851523B (en) | Settlement deviation prevention method for foundation pit construction | |
| CN102094425B (en) | Foundation pit construction method adopting shallow buried depth Larsen steel plate pile as protective cofferdam | |
| CN103882881B (en) | Go deep into rock construction method under water | |
| US20190376252A1 (en) | Foundation With Chain Blades During Construction and Its Construction Method | |
| CN109577365A (en) | A kind of pile formula drainage anchor rod barrier wall structure and its construction method | |
| CN111851522B (en) | Stable sedimentation method for foundation pit construction | |
| CN103938634A (en) | Deep foundation pit supporting structure and construction method | |
| CN111236241A (en) | Weak water-rich stratum subway foundation pit reinforcing excavation method based on half-cover excavation method | |
| CN109577277A (en) | A kind of wall-mounted drainage anchor rod barrier wall structure and its construction method | |
| CN204590059U (en) | A kind of combined type tower-crane foundation structure | |
| CN109577322A (en) | A kind of constructing device for inside soil body existing pile foundation pile extension | |
| CN111851508A (en) | High-pressure-bearing circular deep foundation pit structure suitable for water-rich sand-gravel layer and construction method thereof | |
| CN102787605A (en) | Method for inclining bar-type foundation pit support steel sheet pile of soft soil foundation | |
| CN108411934B (en) | Floating tubular pile, dam retaining structure and construction method thereof | |
| CN110700390A (en) | Construction method of cyclone well under complex geological conditions | |
| CN111042161A (en) | Slope collapse high slope flexible processing structure and construction method thereof | |
| CN215715333U (en) | Pre-buried device of flow plasticity geology bottom plate construction | |
| US3526096A (en) | Method of making rockfill foundations | |
| CN215292504U (en) | Tunnel structure penetrating through large karst cavity top plate | |
| CN209923935U (en) | Co-location combined pile wall supporting structure in upper-soft and lower-hard stratum | |
| CN204435321U (en) | A kind of steam power station water intaking open channel | |
| CN211143136U (en) | Pipe gallery deformation control device in soft soil foundation pit excavation process | |
| CN113668587A (en) | Construction method suitable for excavation and pressure sinking of deep and large open caisson of water-rich stratum | |
| CN103266624B (en) | Method for supporting oil and gas pipeline penetrating through karst active zone | |
| CN113123358A (en) | Ship pool deformation prevention structure under coal mining differential settlement effect 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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211015 Address after: 510800 rooms 601 and 602, 6 / F, Transportation Bureau building, No. 95, Yingbin Avenue, Huadu District, Guangzhou, Guangdong Applicant after: Guangdong Yixin Great Wall Construction Group Co.,Ltd. Address before: 315000 office room 1201, building a, Tengming building, Fenghua District, Ningbo City, Zhejiang Province Applicant before: Xie Jueting |