CN110607794B - Composite deep foundation pit supporting maintenance safety structure - Google Patents
Composite deep foundation pit supporting maintenance safety structure Download PDFInfo
- Publication number
- CN110607794B CN110607794B CN201911007656.5A CN201911007656A CN110607794B CN 110607794 B CN110607794 B CN 110607794B CN 201911007656 A CN201911007656 A CN 201911007656A CN 110607794 B CN110607794 B CN 110607794B
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- Prior art keywords
- fixed
- fixing
- foundation pit
- sectional type
- jet grouting
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- 238000012423 maintenance Methods 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/14—Geometrical or physical properties resilient or elastic
- E02D2200/146—Springs
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a composite deep foundation pit supporting maintenance safety structure, which comprises a sectional protection support column, a hydraulic telescopic cylinder, a prefabricated reinforced concrete square pile and a fixing bolt, wherein a jet grouting pile is fixed in the prefabricated reinforced concrete square pile, a fixing frame is fixed at the upper end of the jet grouting pile, and a fixing disc is fixed at the position of the upper end of the fixing frame corresponding to the jet grouting pile. According to the invention, the sectional type protection support posts with corresponding lengths can be assembled according to the depth of the foundation pit, and the fixing pins are inserted into the fixing grooves between the adjacent sectional type protection support posts, and the fixing clamping blocks of the fixing pins are clamped into the fixing clamping holes of the fixing grooves, so that the sectional type protection support posts can be assembled and fixed quickly.
Description
Technical Field
The invention belongs to the technical field of foundation pit support, and particularly relates to a composite deep foundation pit support maintenance and stability safety structure.
Background
The foundation pit support is used for ensuring the safety of underground structure construction and the surrounding environment of the foundation pit, and is used for supporting, reinforcing and protecting the side wall of the foundation pit and the surrounding environment.
As a structural system, the foundation pit support should meet the requirements of stability and deformation, namely the requirements of two limit states, namely the limit state of bearing capacity and the limit state of normal use, which are usually standardized. The limit state of bearing capacity is the damage of the supporting structure, dumping, sliding or the damage of the surrounding environment, and the instability of a large range occurs for the foundation pit supporting. The general design requirements are that such extreme conditions of the support structure are not allowed. The normal use limit state refers to deformation of the supporting structure or overlarge deformation of the surrounding soil body caused by excavation, so that normal use is affected, but instability of the structure is not caused. Therefore, the foundation pit support design has enough safety coefficient relative to the bearing capacity limit state, the support is not instable, and the displacement is controlled under the condition of ensuring no instable, so that the safe use of surrounding buildings is not affected.
The prior art has the following problems: the existing composite deep foundation pit supporting maintenance safety structure has the advantages that when the existing composite deep foundation pit supporting maintenance safety structure is used, supporting piles used by foundation pits are fixed and cannot be changed along with the depth change of the foundation pits, the fixed installation is troublesome, meanwhile, the prefabricated reinforced concrete square pile structure is smooth, the contact area is small, the tensile dragging effect is poor, and potential safety hazards exist.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides a composite deep foundation pit supporting maintenance safety structure, which has the characteristics of simple structure, convenient fixing and installation, portability in adjustment and firm fixing.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a stable safety structure of combined type deep basal pit support dimension, includes sectional type protection pillar, hydraulic telescoping cylinder, prefabricated reinforced concrete square pile and gim peg, the inside of prefabricated reinforced concrete square pile is fixed with the jet grouting pile, the upper end of jet grouting pile is fixed with the mount, the upper end of mount corresponds the position fixing with the jet grouting pile and has the fixed disk, the other end bottom of mount is fixed with hydraulic telescoping cylinder, hydraulic telescoping cylinder's lower extreme is fixed with the fixing base, the centre of fixing base is fixed with the gim peg, the centre of gim peg is fixed with sectional type protection pillar.
Preferably, the sectional type protection pillar includes fixed fixture block, fixed pin, fixed orifices, fixed slot, fixed card hole and reset spring, wherein, sectional type protection pillar's cylinder lower extreme is provided with the fixed pin, sectional type protection pillar's cylinder upper end is provided with the fixed slot, the inside of fixed pin is fixed with reset spring, reset spring's the other end is fixed with fixed fixture block, sectional type protection pillar's surface is provided with the fixed card hole corresponding with fixed fixture block, sectional type protection pillar's cylinder surface is provided with the fixed hole corresponding with the gim peg.
Preferably, the fixing groove at the upper end of the sectional type protection support column is in an elliptical structure, and the fixing pin corresponds to the fixing groove.
Preferably, stepped fixing rings are arranged around the surface of the precast reinforced concrete square pile, the lower ends of the fixing rings are of inclined structures, and the upper ends of the fixing rings are of horizontal structures.
Preferably, fixed slotted holes are formed in the prefabricated reinforced concrete square piles, and the size of the jet grouting piles corresponds to that of the prefabricated reinforced concrete square piles.
Preferably, the upper end of the jet grouting pile is in a cross structure, and the middle of the fixing disc is provided with a cross slot hole.
Preferably, the upper end of the fixing frame is respectively provided with a fixing slot hole for the sectional type protection support column and the jet grouting pile.
Preferably, the return spring is in an expanded state in a natural state, the surface of the fixed clamping block is positioned in a cylinder fixed clamping hole of the sectional type protection support column when the fixed clamping block is expanded, and the fixed clamping block is positioned in the fixed pin after being contracted.
Preferably, the inner wall of the fixing hole is provided with fastening threads corresponding to the fixing bolt, and the fixing bolt is in threaded rotation connection with the fixing seat.
Preferably, the telescopic length of the hydraulic telescopic cylinder is consistent with the length of the sectional type protection support column.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the stepped fixing rings are arranged around the surface of the precast reinforced concrete square pile, the lower ends of the fixing rings are of an inclined structure, the upper ends of the fixing rings are of a horizontal structure, so that the contact stress area is increased, the stability is improved, and loosening is avoided;
2. According to the invention, the sectional type protection support posts with corresponding lengths can be assembled according to the depth of the foundation pit, and the fixed blocks of the fixed pins are clamped into the fixed clamping holes of the fixed grooves by inserting the fixed pins into the fixed grooves between the adjacent sectional type protection support posts, so that the sectional type protection support posts can be quickly assembled and fixed;
3. According to the invention, the sectional type protection support column connected with the fixing bolt is lowered by extending the hydraulic telescopic cylinder, a new sectional type protection support column is additionally arranged at the upper end of the original sectional type protection support column, and the fixing bolt is fixed on the fixing hole of the new sectional type protection support column by retracting the hydraulic telescopic cylinder, so that the hydraulic telescopic cylinder is convenient to extend again, and the supporting safety is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a sectional protective pillar structure according to the present invention;
FIG. 3 is a schematic side view of the hydraulic telescopic cylinder of the present invention;
FIG. 4 is a schematic top view of the present invention;
In the figure: 1. sectional type protective support column; 11. fixing the clamping block; 12. a fixing pin; 13. a fixing hole; 14. a fixing groove; 15. a fixing clip hole; 16. a return spring; 2. a hydraulic telescopic cylinder; 3. prefabricating a reinforced concrete square pile; 4. jet grouting piles; 5. a fixed plate; 6. a fixing frame; 7. a fixing bolt; 8. a fixing seat.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a stable safety structure of combined type deep basal pit support dimension, including sectional type protection pillar 1, hydraulic telescoping cylinder 2, precast reinforced concrete square pile 3 and gim peg 7, for increasing area of contact, the surface of precast reinforced concrete square pile 3 is provided with the solid fixed ring of echelonment all around, and gu fixed ring's lower extreme is the slope structure and the upper end is the horizontal structure, precast reinforced concrete square pile 3's inside is fixed with the jet grouting pile 4, for improving the fixed steadiness, precast reinforced concrete square pile 3's inside is provided with the slotted hole of fixed, the size of jet grouting pile 4 corresponds with precast reinforced concrete square pile 3, the upper end of jet grouting pile 4 is fixed with mount 6, the upper end of mount 6 corresponds the position fixing dish 5 with jet grouting pile 4, for the convenience is fixed, the upper end of jet grouting pile 4 sets up to the cross structure, the centre of mount 5 sets up to the cross, the other end bottom of mount 6 is fixed with hydraulic telescoping cylinder 2, the lower extreme of hydraulic telescoping cylinder 2 is fixed with fixing base 8, the centre of fixing base 8 is fixed with gim peg 7, the centre of fixing 7 is fixed with sectional type protection pillar 1, the length is used for carrying out the corresponding with the fixed slotted hole of telescopic pile 1 for the convenience, the length is fixed with the telescopic pile 1 is convenient for changing, the length is used for the corresponding protection pillar 1.
The sectional type protection pillar 1 includes fixed fixture block 11, fixed pin 12, fixed hole 13, fixed slot 14, fixed fixture hole 15 and reset spring 16, wherein, the cylinder lower extreme of sectional type protection pillar 1 is provided with fixed pin 12, the cylinder upper end of sectional type protection pillar 1 is provided with fixed slot 14, in order to improve the fixed fastness, fixed slot 14 of the upper end of sectional type protection pillar 1 sets up to oval structure, fixed pin 12 corresponds with fixed slot 14, the inside of fixed pin 12 is fixed with reset spring 16, the other end of reset spring 16 is fixed with fixed fixture block 11, the surface of sectional type protection pillar 1 is provided with the fixed fixture hole 15 corresponding with fixed fixture block 11, for convenient quick fixed and dismantlement, reset spring 16 is in the expansion state under the nature, the surface is located the cylinder fixed fixture hole 15 of sectional type protection pillar 1 when fixed fixture block 11 expands, be located inside fixed pin 12 after the shrinkage, the cylinder surface of sectional type protection pillar 1 is provided with the fixed hole 13 corresponding with the dead bolt 7, in order to make things convenient for fixed mounting, the inner wall of fixed hole 13 is provided with the fastening screw thread corresponding with the dead bolt 7, rotate through threaded connection between dead bolt 7 and 8.
The working principle and the using flow of the invention are as follows: when the hydraulic telescopic support is used, the prefabricated reinforced concrete square piles 3 are fixed in the side soil foundation of a deep foundation pit, then the jet grouting piles 4 are fixed in the prefabricated reinforced concrete square piles 3, the upper ends of the jet grouting piles 4 are fixed with the fixing frames 6, then the fixing plates 5 are used for fixing, the segmented protection support 1 with the corresponding length is assembled according to the depth of the foundation pit, the fixing pins 12 are inserted into the fixing grooves 14 between the adjacent segmented protection support 1, the fixing clamping blocks 11 of the fixing pins 12 are clamped into the fixing clamping holes 15 of the fixing grooves 14, the rapid assembly and the fixing of the segmented protection support 1 are realized, the lower ends of the segmented protection support 1 are inserted into the foundation pit, the upper ends of the segmented protection support 1 are clamped in the slotted holes of the fixing frames 6, the fixing of the segmented protection support 1 is realized, the foundation pit is supported through the segmented protection support 1, the maintenance and stability of the foundation pit are improved, the foundation pit is gradually deepened along with the progress of engineering, the segmented protection support 1 connected with the fixing bolts 7 is lowered through the extension of the hydraulic telescopic cylinders 2, then new segmented protection support 1 is additionally arranged at the upper ends of the original segmented protection support 1, the novel segmented protection support 1 is retracted, the novel segmented protection support 7 is fixed on the fixing holes 13, and the novel segmented protection support 1 is conveniently used, and the structure is convenient to use.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a stable safety structure of combined type deep basal pit support dimension, includes sectional type protection pillar (1), hydraulic telescoping cylinder (2), precast reinforced concrete square pile (3) and gim peg (7), its characterized in that: the inside of precast reinforced concrete square pile (3) is fixed with jet grouting pile (4), the upper end of jet grouting pile (4) is fixed with mount (6), the upper end of mount (6) is fixed with fixed disk (5) with the corresponding position of jet grouting pile (4), the other end bottom of mount (6) is fixed with hydraulic telescoping cylinder (2), the lower extreme of hydraulic telescoping cylinder (2) is fixed with fixing base (8), the centre of fixing base (8) is fixed with gim peg (7), the centre of gim peg (7) is fixed with segmented protection pillar (1), segmented protection pillar (1) are including fixture block (11), fixed pin (12), fixed orifices (13), fixed slot (14), fixed orifices (15) and reset spring (16), wherein, the cylinder lower extreme of segmented protection pillar (1) is provided with fixed pin (12), the cylinder upper end of segmented protection pillar (1) is provided with fixed slot (14), the inside of fixed pin (12) is fixed with reset spring (16), the centre of gim peg (8) is fixed with segmented protection pillar (11), the fixed surface of other end (16) is provided with fixed fixture block (11) corresponding to fixed orifice (11), the surface of the column body of the sectional type protection column (1) is provided with a fixing hole (13) corresponding to the fixing bolt (7), the periphery of the surface of the precast reinforced concrete square pile (3) is provided with a stepped fixing ring, the lower end of the fixing ring is of an inclined structure, and the upper end of the fixing ring is of a horizontal structure.
2. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the fixing groove (14) at the upper end of the sectional type protection support column (1) is of an oval structure, and the fixing pin (12) corresponds to the fixing groove (14).
3. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the inside of precast reinforced concrete square pile (3) is provided with fixed slotted hole, the size of jet grouting pile (4) corresponds with precast reinforced concrete square pile (3).
4. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the upper end of the jet grouting pile (4) is of a cross structure, and the middle of the fixing disc (5) is provided with a cross slot hole.
5. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the upper end of the fixing frame (6) is respectively provided with a fixing slot hole for the sectional type protection support column (1) and the jet grouting pile (4).
6. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the reset spring (16) is in an expanded state in a natural state, the surface of the fixed clamping block (11) is positioned in a cylinder fixed clamping hole (15) of the segmented protection support column (1) when the fixed clamping block (11) is expanded, and the fixed clamping block (11) is positioned in the fixed pin (12) after being contracted.
7. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the inner wall of the fixing hole (13) is provided with fastening threads corresponding to the fixing bolt (7), and the fixing bolt (7) is in threaded rotation connection with the fixing seat (8).
8. The composite deep foundation pit supporting maintenance safety structure according to claim 1, wherein: the telescopic length of the hydraulic telescopic cylinder (2) is consistent with the length of the sectional type protection support column (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911007656.5A CN110607794B (en) | 2019-10-22 | 2019-10-22 | Composite deep foundation pit supporting maintenance safety structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911007656.5A CN110607794B (en) | 2019-10-22 | 2019-10-22 | Composite deep foundation pit supporting maintenance safety structure |
Publications (2)
| Publication Number | Publication Date |
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| CN110607794A CN110607794A (en) | 2019-12-24 |
| CN110607794B true CN110607794B (en) | 2024-07-26 |
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| CN201911007656.5A Active CN110607794B (en) | 2019-10-22 | 2019-10-22 | Composite deep foundation pit supporting maintenance safety structure |
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| CN104594360A (en) * | 2014-12-31 | 2015-05-06 | 云南建工基础工程有限责任公司 | Composite double-row pile foundation pit supporting structure |
| CN206000555U (en) * | 2016-07-26 | 2017-03-08 | 刘立民 | Sectionally assembled hydraulic single prop |
| CN107829771A (en) * | 2017-12-04 | 2018-03-23 | 贵州大学 | A kind of adaptability extended type anchor pole |
| CN208996066U (en) * | 2018-09-22 | 2019-06-18 | 张善岳 | A kind of novel building pile foundation module |
| CN211172001U (en) * | 2019-10-22 | 2020-08-04 | 山西省工业设备安装集团有限公司 | Stable safety structure is protected to combined type deep basal pit support dimension |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101117546B1 (en) * | 2009-08-18 | 2012-03-07 | (주)피에스테크 | Structure for connecting and jointing square still supporting beam in temporary soil sheathing and reinforcing members for the same |
| CN109235429A (en) * | 2018-10-12 | 2019-01-18 | 中铁六局集团有限公司 | A kind of multidirectional concrete-cored mortar mixing pile construction engineering method of marine facies geology |
-
2019
- 2019-10-22 CN CN201911007656.5A patent/CN110607794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594360A (en) * | 2014-12-31 | 2015-05-06 | 云南建工基础工程有限责任公司 | Composite double-row pile foundation pit supporting structure |
| CN206000555U (en) * | 2016-07-26 | 2017-03-08 | 刘立民 | Sectionally assembled hydraulic single prop |
| CN107829771A (en) * | 2017-12-04 | 2018-03-23 | 贵州大学 | A kind of adaptability extended type anchor pole |
| CN208996066U (en) * | 2018-09-22 | 2019-06-18 | 张善岳 | A kind of novel building pile foundation module |
| CN211172001U (en) * | 2019-10-22 | 2020-08-04 | 山西省工业设备安装集团有限公司 | Stable safety structure is protected to combined type deep basal pit support dimension |
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| CN110607794A (en) | 2019-12-24 |
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Country or region after: China Address after: 030032 No. 8, Xinhua Road, Tanghuai Industrial Park, transformation and comprehensive reform demonstration zone, Taiyuan, Shanxi Province Applicant after: Shanxi Installation Group Co.,Ltd. Address before: 030021 No.8 Xinhua Road, Taiyuan Economic and Technological Development Zone, Xiaodian District, Taiyuan City, Shanxi Province Applicant before: SHANXI INDUSTRIAL EQUIPMENT INSTALLATION GROUP Co.,Ltd. Country or region before: China |
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