CN113863319A - Foundation pit passive area reinforcing method - Google Patents
Foundation pit passive area reinforcing method Download PDFInfo
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- CN113863319A CN113863319A CN202111221487.2A CN202111221487A CN113863319A CN 113863319 A CN113863319 A CN 113863319A CN 202111221487 A CN202111221487 A CN 202111221487A CN 113863319 A CN113863319 A CN 113863319A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 184
- 238000010276 construction Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 19
- 230000008901 benefit Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- 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
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a foundation pit passive area reinforcing method, wherein a vertical cement mixing pile is in a vertical occlusion state, the bearing capacity of a foundation of a passive area can be improved, the sedimentation deformation and the uplift damage of the bottom of a foundation pit are reduced, an inclined cement mixing pile is in an inclined state and is connected with the vertical cement mixing pile in an interconnection mode and is mainly used for resisting the horizontal displacement and the horizontal extrusion force of a foundation pit supporting pile, the vertical cement mixing pile and the inclined cement mixing pile form an integral body in the interconnection mode, and meanwhile, section steel can be inserted into the inclined cement mixing pile to improve the bending resistance of the inclined cement mixing pile. The invention has convenient construction, low cost and good effect of resisting horizontal extrusion stress and horizontal displacement.
Description
Technical Field
The invention relates to a foundation pit reinforcing method, in particular to a foundation pit passive area reinforcing method.
Background
In order to ensure the safety of a foundation pit supporting structure and improve the stability of a foundation pit, a cement stirring pile or a high-pressure jet grouting pile is generally adopted for reinforcing the bottom of the foundation pit, and particularly in a soft soil area, the passive region reinforcement of the bottom of the foundation pit is indispensable. Along with going on of foundation ditch excavation, foundation ditch fender pile progressively produces to the inside deformation of foundation ditch and horizontal extrusion force, and traditional cement mixing pile or high pressure jet grouting pile are vertical state, bear vertical power effect better, and can't effectually bear horizontal extrusion force. In soft soil areas, in order to effectively resist the horizontal deformation and stress of foundation pit supporting piles, a passive area reinforcing form of full-bore reinforcement or grid-shaped reinforcement is generally adopted, wherein the full-bore reinforcement is to interlock cement mixing piles or high-pressure rotary jet piles to fill the bottom of a foundation pit to form a whole, and the grid-shaped reinforcement is to interlock cement mixing piles or high-pressure rotary jet piles to form a grid-shaped whole. The two reinforcement forms can better resist the horizontal deformation and the horizontal stress of the foundation pit supporting structure, but the construction quantity is large, the construction period is long, the construction cost is high, and the construction cost of the foundation pit engineering in the soft soil area is greatly increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the method for reinforcing the passive area of the foundation pit, which can resist the settlement and the uplift damage of the bottom of the foundation pit, improve the bearing capacity of the foundation, effectively resist the horizontal extrusion stress and the horizontal displacement of the supporting pile of the foundation pit, greatly shorten the construction period of the foundation pit and reduce the manufacturing cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention discloses a method for reinforcing a passive area of a foundation pit, which comprises the following steps of:
firstly, removing surface soil and weeds at the top of a foundation pit, and leveling according to design requirements;
step two, constructing inclined cement mixing piles and vertical cement mixing piles in a passive area of the foundation pit to form an integral structure, wherein the integral structure comprises the vertical cement mixing piles which are longitudinally arranged along the left side and the right side of the foundation pit respectively, two columns of the vertical cement mixing piles are arranged on the left side and the right side respectively, or when the width of the foundation pit is larger than 6m, two columns of the vertical cement mixing piles in the middle are arranged between the two columns of the vertical cement mixing piles on the left side and the two columns of the vertical cement mixing piles on the right side and are longitudinally arranged along the foundation pit at left and right intervals, the vertical cement mixing piles at the same transverse position of the foundation pit are used as one row to form an initial vertical cement mixing pile transverse row, two inclined cement mixing piles which are arranged in a crossed mode are connected between the front row and the rear row of the vertical cement mixing piles at a set position, and the two inclined cement mixing piles which are arranged in a crossed mode form an inclined cement mixing pile inclined strut, the inclined cement mixing piles and the vertical cement mixing piles are connected with each other in an occlusion mode, the adjacent vertical cement mixing piles are arranged in an occlusion mode, all the vertical cement mixing piles and the inclined cement mixing piles form an integral body which is connected with each other, the pile diameter of each vertical cement mixing pile is 500-800 mm, and the occlusion overlap joint width between the piles of each vertical cement mixing pile is 100-200 mm; the construction process of the integral structure comprises the following steps:
firstly, constructing a first row of vertical cement mixing piles from front to back according to the rows, then judging whether inclined cement mixing pile inclined strut construction is carried out or not, and repeating the step to carry out next row of vertical cement mixing pile construction if inclined cement mixing pile inclined strut construction is not carried out; otherwise, executing the next step;
secondly, inclined cement mixing pile inclined struts are constructed, two inclined cement mixing piles which are arranged in a crossed mode are respectively meshed with the vertical cement mixing piles at the row of positions to be connected, and the section steel is inserted into one inclined cement mixing pile in each inclined cement mixing pile inclined strut before cement soil of the inclined cement mixing pile is solidified;
thirdly, repeating the first step and the third step, and constructing the next row of vertical cement mixing piles and the inclined cement mixing piles until all the rows of vertical cement mixing piles and the inclined cement mixing piles are constructed;
and step three, driving support piles into the periphery of the foundation pit after the vertical cement mixing piles and the inclined cement mixing piles reach the age of 28 days, excavating the foundation pit, and then constructing a foundation pit cross brace between the left support pile and the right support pile along the transverse direction of the foundation pit.
Compared with the prior art, the invention has the following obvious advantages:
1. the invention can not only improve the bearing capacity of the passive reinforcement area of the foundation pit, reduce the settlement and uplift damage of the bottom of the foundation pit, but also effectively resist the horizontal displacement horizontal extrusion force of the support piles, thereby improving the reinforcement effect of the passive area of the foundation pit and the integral stability of the foundation pit.
2. Compared with the full-bore reinforcement and grid reinforcement, the invention greatly reduces the engineering quantity of cement mixing piles or high-pressure jet grouting piles, reduces the reinforcement cost of the passive area of the foundation pit, and has obvious economic benefit.
3. The method is applied to the passive area reinforcement of the comprehensive pipe gallery foundation pit in the soft soil area, and can greatly reduce the construction period because the mileage of the pipe gallery is generally longer and the reinforcement engineering quantity of the passive area is large.
4. The section steel and the cement soil mixing pile are combined, so that the concrete mixing pile has good bending resistance and compression resistance and is convenient to implement.
Drawings
FIG. 1 is a structural front view of a reinforced area of a foundation pit passive area reinforcing method according to the present invention;
FIG. 2 is a schematic view of a passive zone reinforcement structure of the structure shown in FIG. 1;
FIG. 3 is a first exemplary passive zone consolidation floor plan;
FIG. 4 is a second exemplary passive zone consolidation floor plan;
FIG. 5 is a third exemplary passive zone stiffening floor plan;
FIG. 6 is a front view of the passive zone reinforcement for a wider portion of a pit;
FIG. 7 is a plan view of a typical passive zone reinforcement for a wider first pit;
FIG. 8 is a plan view of a typical passive zone reinforcement for a second wider pit;
FIG. 9 is a plan view of a typical passive area reinforcement for a wider portion of a third pit;
FIG. 10 is a sectional view of the slant cement mixing pile insert section steel.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "provided with" and "connected" are to be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in the attached drawings, the invention discloses a foundation pit passive area reinforcing method, which comprises the following steps:
firstly, removing surface soil and weeds 5 on the top of a foundation pit, and leveling according to design requirements;
step two, constructing inclined cement mixing piles 12 and vertical cement mixing piles 11 in a passive area of the foundation pit to form an integral structure, wherein the integral structure comprises the vertical cement mixing piles 11 which are respectively and longitudinally arranged along the left side and the right side of the foundation pit (arranged along the vertical direction), the vertical cement mixing piles 11 are respectively arranged in two rows on the left side and the right side, or when the foundation pit is wider (the width is usually larger than 6m), as shown in figures 7-9, two rows of middle vertical cement mixing piles 11 are arranged between the two rows of vertical cement mixing piles 11 on the left side and the two rows of vertical cement mixing piles 11 on the right side and longitudinally arranged along the foundation pit at intervals, the vertical cement mixing piles 11 at the same transverse position along the foundation pit are used as one row to form an initial vertical cement mixing pile transverse row, and two inclined cement mixing piles 12 which are arranged in a crossed mode are connected between the two rows of cement mixing piles 11 at the front side and the back side of the set position, the inclined cement mixing piles which are arranged in a crossed mode form an inclined cement mixing pile inclined strut, the inclined cement mixing pile inclined strut and the vertical cement mixing piles 11 which are connected are mutually meshed, the adjacent vertical cement mixing piles 11 are mutually meshed, and all the vertical cement mixing piles 11 and the inclined cement mixing piles 12 form a whole which is connected with each other. The pile diameter of the vertical cement-soil mixing pile is 500-800 mm, the width of occlusion lap joint between the piles of the vertical cement-soil mixing pile is 100-200 mm, the included angle between the axis of the inclined mixing pile and the vertical line is generally 10-50 degrees, the angle is determined according to the depth of a foundation pit passive area needing reinforcement and the distance between 11 rows and rows of the vertical cement-soil mixing piles, and the calculation method is that a is arctan (D/H). D represents the width of the foundation pit, namely the distance between the foundation pit supporting piles, and H represents the height of the vertical cement mixing pile;
the construction process of the integral structure comprises the following steps:
firstly, constructing a first row of vertical cement mixing piles 11 from front to back according to rows, then judging whether inclined cement mixing pile inclined strut construction is carried out or not, and repeating the step to carry out the construction of the next row of vertical cement mixing piles 11 if inclined cement mixing pile inclined struts are not constructed; otherwise, executing the next step;
secondly, inclined cement mixing pile diagonal bracing construction is carried out, two inclined cement mixing piles 12 which are arranged in a crossed mode are respectively meshed with the vertical cement mixing piles 11 at the row of positions to be connected, the section steel 6 is inserted into one inclined cement mixing pile in each inclined cement mixing pile diagonal bracing before cement soil of the inclined cement mixing pile is solidified, and the section steel 6 can be HW344 multiplied by 348 multiplied by 10 multiplied by 16 or HW400 multiplied by 300 multiplied by 11 multiplied by 18; the front and the rear section steels 6 are preferably arranged in a crossed manner;
and thirdly, repeating the first step and the third step, and constructing the vertical cement mixing piles 11 and the inclined cement mixing piles 12 in the next row until all the vertical cement mixing piles 11 and the inclined cement mixing piles 12 in all the rows are constructed.
Preferably, the cement mixing amount of the solid pile of the vertical cement mixing pile 11 is 15-20% and the lifting speed in the mixing process is 0.8 m/min; the cement mixing amount of the solid pile of the inclined cement mixing pile 12 is 20-25%, the lifting speed in the mixing process is normally 0.8m/min, and when the construction is carried out to the crossing position of the inclined cement mixing pile 12 and the vertical cement mixing pile 11 or the crossing position of the inclined cement mixing pile 12 and the inclined cement mixing pile 12, the lifting speed is reduced to 0.4m/min, so that the pile forming effect of the connection position is ensured. In order to ensure the pile forming quality of the vertical cement mixing pile 11 and the inclined cement mixing pile 12, cement is properly mixed into the empty pile 13 of the vertical cement mixing pile 11 and the empty pile 14 of the inclined cement mixing pile, and the cement mixing amount is 6-7%.
As an embodiment of the present invention, as shown in fig. 3 and 7, the inclined strut of the inclined cement mixing pile is positioned as follows: and the vertical cement mixing piles are alternately arranged between two adjacent rows of the front and the back vertical cement mixing piles 11.
As shown in fig. 4, 5, 8 and 9, the first construction process of the integral structure further comprises: whether at first judge and to include and strengthen vertical cement mixing stake horizontal row construction in the passive district of foundation ditch, if have, then accomplish when carrying out every row of vertical cement mixing stake 11 construction after according to arranging in the past and strengthen vertical cement mixing stake horizontal row construction, every strengthen vertical cement mixing stake horizontal row by many vertical cement mixing stake along the horizontal interlock setting each other of foundation ditch and vertical cement mixing stake horizontal row and with the initial vertical cement mixing stake horizontal row interlock setting each other that arranges the setting, slope cement mixing stake 12 and the position of strengthening vertical cement mixing stake horizontal row set up to: and the front and the rear vertical rows of cement mixing piles 11 are alternately arranged.
The distance between the front row and the rear row of the reinforced vertical cement mixing piles is preferably 2.4-4 m.
And step three, driving the support piles 3 around the foundation pit after the vertical cement mixing piles 11 and the inclined cement mixing piles 12 reach the age of 28 days, excavating the foundation pit, and constructing a foundation pit cross brace 2 between the left support pile 3 and the right support pile 3 along the transverse direction of the foundation pit.
The vertical cement mixing piles 11 are in a vertical occlusion state, so that the bearing capacity of the foundation in a passive area can be improved, and the sedimentation deformation and the uplift damage of the bottom of the foundation pit are reduced; the inclined cement mixing pile 12 is in an inclined state and is connected with the vertical cement mixing pile 11 in an interconnecting mode and is mainly used for resisting horizontal displacement and horizontal extrusion force of the foundation pit supporting pile 3, the vertical cement mixing pile 11 and the inclined cement mixing pile 12 form an interconnected whole, meanwhile, the section steel 6 can be inserted into the inclined cement mixing pile 12 to improve the bending resistance of the inclined cement mixing pile 12.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A foundation pit passive area reinforcing method is characterized by comprising the following steps:
firstly, removing surface soil and weeds at the top of a foundation pit, and leveling according to design requirements;
step two, constructing inclined cement mixing piles and vertical cement mixing piles in a passive area of the foundation pit to form an integral structure, wherein the integral structure comprises the vertical cement mixing piles which are longitudinally arranged along the left side and the right side of the foundation pit respectively, two columns of the vertical cement mixing piles are arranged on the left side and the right side respectively, or when the width of the foundation pit is larger than 6m, two columns of the vertical cement mixing piles in the middle are arranged between the two columns of the vertical cement mixing piles on the left side and the two columns of the vertical cement mixing piles on the right side and are longitudinally arranged along the foundation pit at left and right intervals, the vertical cement mixing piles at the same transverse position of the foundation pit are used as one row to form an initial vertical cement mixing pile transverse row, two inclined cement mixing piles which are arranged in a crossed mode are connected between the front row and the rear row of the vertical cement mixing piles at a set position, and the two inclined cement mixing piles which are arranged in a crossed mode form an inclined cement mixing pile inclined strut, the inclined cement mixing piles and the vertical cement mixing piles are connected with each other in an occlusion mode, the adjacent vertical cement mixing piles are arranged in an occlusion mode, all the vertical cement mixing piles and the inclined cement mixing piles form an integral body which is connected with each other, the pile diameter of each vertical cement mixing pile is 500-800 mm, and the occlusion overlap joint width between the piles of each vertical cement mixing pile is 100-200 mm; the construction process of the integral structure comprises the following steps:
firstly, constructing a first row of vertical cement mixing piles from front to back according to the rows, then judging whether inclined cement mixing pile inclined strut construction is carried out or not, and repeating the step to carry out next row of vertical cement mixing pile construction if inclined cement mixing pile inclined strut construction is not carried out; otherwise, executing the next step;
secondly, inclined cement mixing pile inclined struts are constructed, two inclined cement mixing piles which are arranged in a crossed mode are respectively meshed with the vertical cement mixing piles at the row of positions to be connected, and the section steel is inserted into one inclined cement mixing pile in each inclined cement mixing pile inclined strut before cement soil of the inclined cement mixing pile is solidified;
thirdly, repeating the first step and the third step, and constructing the next row of vertical cement mixing piles and the inclined cement mixing piles until all the rows of vertical cement mixing piles and the inclined cement mixing piles are constructed;
and step three, driving support piles into the periphery of the foundation pit after the vertical cement mixing piles and the inclined cement mixing piles reach the age of 28 days, excavating the foundation pit, and then constructing a foundation pit cross brace between the left support pile and the right support pile along the transverse direction of the foundation pit.
2. The method for reinforcing the passive area of the foundation pit according to claim 1, wherein: the inclined concrete mixing pile inclined strut is arranged in the following positions: and the cement mixing piles are alternately arranged between two adjacent rows of the front and the back vertical cement mixing piles.
3. The method for reinforcing the passive area of the foundation pit according to claim 1, wherein: the first step further comprises: whether at first judge and to include and strengthen vertical cement mixing stake horizontal row construction in the passive district of foundation ditch, if have, then accomplish when carrying out every row of vertical cement mixing stake construction after to according to arranging in the past and strengthen vertical cement mixing stake horizontal row construction, every strengthen vertical cement mixing stake horizontal row by many vertical cement mixing stake along the horizontal interlock setting each other of foundation ditch constitute and vertical cement mixing stake horizontal row and with the initial vertical cement mixing stake horizontal row interlock setting each other that arranges the setting, the position of slope cement mixing stake and strengthen vertical cement mixing stake horizontal row set up to: and the front and the rear vertical rows of cement mixing piles are alternately arranged.
4. The method for reinforcing the passive area of the foundation pit according to claim 3, wherein: the distance between the front and back rows of horizontal reinforced vertical cement mixing piles is 2.4-4 m.
5. The method for reinforcing the passive area of the foundation pit according to any one of claims 1 to 4, wherein: the cement mixing amount of the solid pile of the vertical cement mixing pile is 15-20%, and the lifting speed in the mixing process is 0.8 m/min; the cement mixing amount of the solid pile of the inclined cement mixing pile is 20-25%, the lifting speed in the mixing process is normally 0.8m/min, and the lifting speed is reduced to 0.4m/min when the inclined cement mixing pile and the vertical cement mixing pile or the inclined cement mixing pile and the inclined cement mixing pile are constructed to the intersection position.
6. The method for reinforcing the passive area of the foundation pit according to claim 5, wherein: and cement is mixed into the empty pile of the vertical cement mixing pile and the empty pile of the inclined cement mixing pile, and the cement mixing amount is 6-7%.
7. The method for reinforcing the passive area of the foundation pit according to claim 6, wherein: the included angle between the axis of the inclined stirring pile and the vertical line is 10-50 degrees.
8. The method for reinforcing the passive area of the foundation pit according to claim 7, wherein: the front section steel and the rear section steel are arranged in a crossed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221487.2A CN113863319A (en) | 2021-10-20 | 2021-10-20 | Foundation pit passive area reinforcing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221487.2A CN113863319A (en) | 2021-10-20 | 2021-10-20 | Foundation pit passive area reinforcing method |
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| CN113863319A true CN113863319A (en) | 2021-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687358A (en) * | 2022-04-18 | 2022-07-01 | 海颐建工集团有限公司 | Narrow foundation pit foundation reinforcing structure and reinforcing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007270461A (en) * | 2006-03-30 | 2007-10-18 | Takenaka Komuten Co Ltd | Earth retaining method |
| CN103981858A (en) * | 2013-02-08 | 2014-08-13 | 邹宗煊 | Anti-tilt pipe piles protected by latticed cement-soil continuous walls and construction method thereof |
| CN205369268U (en) * | 2016-01-08 | 2016-07-06 | 上海岩土工程勘察设计研究院有限公司 | Accessible vertical type underground structure in hole |
| CN106149745A (en) * | 2016-08-24 | 2016-11-23 | 江西理工大学 | A kind of truss type steel tube grouting pile basis and construction method thereof |
| CN110374112A (en) * | 2019-07-26 | 2019-10-25 | 中国能源建设集团湖南省电力设计院有限公司 | Weak soil site system of deep foundation pit support and its construction method |
| CN111236241A (en) * | 2020-03-12 | 2020-06-05 | 福建工程学院 | Weak water-rich stratum subway foundation pit reinforcing excavation method based on half-cover excavation method |
| CN214143785U (en) * | 2020-12-10 | 2021-09-07 | 爱德森堡新材料有限公司 | Interconnected cement stirring pile group |
-
2021
- 2021-10-20 CN CN202111221487.2A patent/CN113863319A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007270461A (en) * | 2006-03-30 | 2007-10-18 | Takenaka Komuten Co Ltd | Earth retaining method |
| CN103981858A (en) * | 2013-02-08 | 2014-08-13 | 邹宗煊 | Anti-tilt pipe piles protected by latticed cement-soil continuous walls and construction method thereof |
| CN205369268U (en) * | 2016-01-08 | 2016-07-06 | 上海岩土工程勘察设计研究院有限公司 | Accessible vertical type underground structure in hole |
| CN106149745A (en) * | 2016-08-24 | 2016-11-23 | 江西理工大学 | A kind of truss type steel tube grouting pile basis and construction method thereof |
| CN110374112A (en) * | 2019-07-26 | 2019-10-25 | 中国能源建设集团湖南省电力设计院有限公司 | Weak soil site system of deep foundation pit support and its construction method |
| CN111236241A (en) * | 2020-03-12 | 2020-06-05 | 福建工程学院 | Weak water-rich stratum subway foundation pit reinforcing excavation method based on half-cover excavation method |
| CN214143785U (en) * | 2020-12-10 | 2021-09-07 | 爱德森堡新材料有限公司 | Interconnected cement stirring pile group |
Non-Patent Citations (1)
| Title |
|---|
| 刘宝兴, 北京：海潮出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687358A (en) * | 2022-04-18 | 2022-07-01 | 海颐建工集团有限公司 | Narrow foundation pit foundation reinforcing structure and reinforcing method thereof |
| CN114687358B (en) * | 2022-04-18 | 2024-03-29 | 海颐建工集团有限公司 | Narrow foundation pit foundation reinforcement structure and reinforcement method thereof |
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