CN208201885U - A kind of supporting construction at multiple external corners continuous in base pit engineering - Google Patents
A kind of supporting construction at multiple external corners continuous in base pit engineering Download PDFInfo
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- CN208201885U CN208201885U CN201820651577.2U CN201820651577U CN208201885U CN 208201885 U CN208201885 U CN 208201885U CN 201820651577 U CN201820651577 U CN 201820651577U CN 208201885 U CN208201885 U CN 208201885U
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- foundation pit
- stake
- anchor cable
- supporting construction
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Abstract
The utility model belongs to pattern foundation pit supporting structure equipment technical field, it is related to a kind of supporting construction at multiple external corners continuous in base pit engineering, foundation pit enclosure stake is set as two rows of along each foundation pit external corner, it is in the stake top setting crown beam of foundation pit enclosure stake that foundation pit enclosure stake connection is integral, waist rail is set in two rows of foundation pit enclosure stakes of each foundation pit external corner, foundation pit enclosure stake, crown beam, setting anchor cable drills on waist rail, prestressing force is set between two rows of foundation pit enclosure stakes to anchor cable is drawn, prestressing force passes through anchor cable drilling to drawing anchor cable and locks foundation pit enclosure stake；Between the adjacent foundation pit enclosure stake of two neighboring foundation pit external corner, at crown beam and the pile body of foundation pit enclosure stake, type steel support beam is arranged, type steel support beam is vertically provided with steel column in foundation pit recess.By prestressing force to the dual supporting construction for drawing anchor cable and type steel support beam, the horizontal displacement of foundation pit external corner in Excavation Process is effectively controlled, construction technology is simple, effectively saves project cost, shortens the construction period.
Description
Technical field
The utility model belongs to pattern foundation pit supporting structure equipment technical field, is related to a kind of foundation pit external corner supporting construction, and in particular to
A kind of supporting construction at multiple external corners continuous in base pit engineering.
Background technique
With the iterative method of urbanization process, deep-foundation pit engineering is more and more, and difficulty of construction is also increasing, especially
There are continuous multiple external corners, very big difficulty brought to pattern foundation pit supporting structure in the shape of some foundation pits similar to ladder-like.The prior art
In, anchor pulling structure and brace type structure are most common support forms in foundation pit supporting project.If in the continuous external corner of foundation pit
Place uses anchor pulling structure, and supporting construction two sides are required to setting anchor cable, causes very big destruction to the soil body at meeting external corner, generates
Multi anchorage effect and the very big difficulty of construction of presence.And according to brace type structure, other straightways in foundation pit must also be adopted
With brace type structure, the problems such as foundation pit supporting project cost is high, the construction period is long is faced using support construction comprehensively.It can also adopt
Excavated with by external corner, the treating method that will be backfilled at external corner after the completion of the base pit engineering, but excavate external corner need to occupy it is bigger
Land used range, if having proposed building plans at external corner or beyond land red-line range when excavates external corner not allows, while sun
When angle is larger, excavates and backfill requires biggish volume of earthwork, foundation pit supporting project cost will be increased.
Utility model content
At the technical problem to be solved by the utility model is to provide a kind of for multiple external corners continuous in base pit engineering
Supporting construction will can retain foundation pit external corner and not excavated and controlled well to drawing anchor cable and plain type bracing members to combine
The displacement deformation of external corner processed, simple and quick, project cost is low.
The utility model realize above-mentioned purpose technical solution be, it is a kind of for multiple external corners continuous in base pit engineering at
Supporting construction, including foundation pit enclosure stake (1), crown beam (2), type steel support beam (3), prestressing force, to anchor cable (5) are drawn, feature exists
In there are multiple continuous foundation pit external corners (8), and the foundation pit enclosure stake (1) is arranged along each foundation pit external corner (8) sideline, in base
Stake top setting crown beam (2) of pit enclosure stake (1) is integral by the foundation pit enclosure stake (1) connection, in each foundation pit external corner (8)
At least 1 group of waist rail (7), the foundation pit enclosure stake (1), crown beam are symmetrical arranged on two rows of foundation pit enclosure stakes (1) on the inside of foundation pit
(2), anchor cable is arranged on waist rail (7) to drill (6), at least one prestressing force is set between two rows of foundation pit enclosure stakes (1) to drawing anchor
Rope (5), the prestressing force pass through anchor cable drilling (6) to drawing anchor cable (5) and lock foundation pit enclosure stake (1)；Foundation pit recess is adjacent
Between the adjacent foundation pit enclosure stake (1) of two foundation pit external corners (8), at crown beam (2) and the pile body of foundation pit enclosure stake (1), point
It She Zhi not at least one type steel support beam (3).
Preferably, the foundation pit enclosure stake (1) is arranged along the sideline of each foundation pit external corner (8).
Further, the prestressing force is locked in crown beam (2) and waist rail by anchorage to the cable body both ends for drawing anchor cable (5)
(7) on.
Further, the foundation pit enclosure stake (1) is cast-in-situ bored pile or engineering method stake, is connected by crown beam (2) integral.
Further, the type steel support beam (3) is H profile steel or I-steel, and both ends are bolted.
Further, vertical spacing is 3 ~ 5m when the type steel support beam (3) is arranged.
Further, the type steel support beam (3) is vertically provided with steel column (4).
Further, the steel column (4) is H profile steel.
Further, the steel column (4) is arranged in type steel support beam (3) the horizontal position middle.
Further, the length of the steel column (4) is foundation depth+insertion foundation pit bottom length, is inserted into foundation pit bottom length
Not less than 3m.
Prestressing force pair is arranged by the crown beam layer and foundation pit enclosure stake body itself of foundation pit enclosure stake top in the utility model
It draws anchor cable to lock the soil body of foundation pit external corner, increases the active horizontal resist forces of building enclosure, while setting in foundation pit recess
Supporting beam is set, passive bound further is carried out to foundation pit enclosure structure, effectively controls the water of foundation pit external corner in Excavation Process
Prosposition moves.
Compared with prior art, a kind of supporting construction at multiple external corners continuous in base pit engineering of the utility model
The beneficial effects are as follows: 1) by setting prestressing force to the dual supporting construction for drawing anchor cable and type steel support beam, shared
The soil body at foundation pit external corner topples power, effectively controls the horizontal displacement of foundation pit external corner in Excavation Process；2) the pre- of setting answers
Power is to anchor cable construction simple process is drawn, and without carrying out slip casting and maintenance to drilling, the installation of type steel support beam is simple and fast, is not necessarily to group
Dress effectively saves project cost, shortens the construction period.
Detailed description of the invention
Fig. 1: the supporting construction plan view of the utility model.
Fig. 2: the supporting construction diagrammatic cross-section of the utility model.
Each label in figure are as follows: 1-foundation pit enclosure stake；2-crown beams；3-type steel support beams；4-steel columns；5-prestressing force
To drawing anchor cable；The drilling of 6-anchor cables；7-waist rails；8-foundation pit external corners.
Specific embodiment
The utility model is described in further detail below by drawings and examples, but the protection model of the utility model
It encloses and is not limited to the content.
A kind of construction procedure for the supporting construction at multiple external corners continuous in base pit engineering of the utility model are as follows:
(1) supporting stability is carried out according to construction place exploration report, excavation of foundation pit depth, foundation pit surrounding environment etc. to test
Calculation, the type selecting for determining foundation pit enclosure stake (1) according to checking computation results, prestressing force are in drawing anchor cable (5) stress standard value and support
Power standard value, while determining model, vertical spacing, water of the prestressing force to the cable body quantity and type steel support beam (3) of drawing anchor cable (5)
Flat spacing；
(2) according to design requirement, the construction of foundation pit enclosure stake (1) is carried out；
(3) after the pile quality of foundation pit enclosure stake (1) is stablized, the construction of crown beam (2) is carried out, prestressing force pair is set in plan
It draws and reserves pvc pipe at anchor cable (5), wear beam for later period anchor cable and prepare；
(4) a trench is excavated in the surface layer of crown beam (2), prestressing force is placed in trench the cable body for drawing anchor cable (5), rope
Body both ends pass through crown beam (2) and reserve pvc pipe and be locked on crown beam (2) by anchorage, are backfilled trench with true after locking
Anchor cable is protected not to be destroyed；
(5) before excavation of foundation pit, crown beam (2) ground carry out steel column (4) construction, steel column (4) be inserted into foundation pit bottom with
It is not less than 3m down, and carries out the lifting construction of type steel support beam (3) at crown beam (2)；
(6) after the completion of above-mentioned construction, excavation pit.According to foundation depth, second layer supporting construction can be set, then after
Continuous excavation pit is until reach foundation pit bottom.
As shown in Figure 1 and Figure 2, a kind of supporting construction at multiple external corners continuous in base pit engineering, for there are multiple
The supporting of continuous foundation pit external corner 8, including foundation pit enclosure stake 1, crown beam 2, type steel support beam 3 and prestressing force is to drawing anchor cable 5,
Prestressing force is respectively set at the crown beam layer and pile body of foundation pit enclosure stake 1 to 3 shared foundation pit sun of drawing anchor cable 5 and type steel support beam
The soil body at angle 8 topples power.
The foundation pit enclosure stake 1, at being vertically arranged as two rows, is set along each foundation pit external corner 8 in the stake top of foundation pit enclosure stake 1
It sets crown beam 2 and the foundation pit enclosure stake 1 is connected to integral, the close foundation pit in two rows of foundation pit enclosure stakes 1 of each foundation pit external corner 8
Inside is symmetrical arranged two groups of waist rails 7, anchor cable drilling 6 is arranged on the foundation pit enclosure stake 1, crown beam 2, waist rail 7, in two rows of foundation pits
Two prestressing force are set to anchor cable 5 is drawn, the prestressing force passes through anchor cable drilling 6 for foundation pit enclosure to drawing anchor cable 5 between fender post 1
Stake 1 locks.
The construction of the anchor cable drilling 6, the drilling of drilling and waist rail layer including crown beam layer.The drilling of crown beam layer is described
When crown beam 2 is constructed, need in plan setting prestressing force to reserved pvc pipe at anchor cable 5 is drawn, later, first in crown beam layer surface layer
The trench of a width 10cm, height 30cm are excavated, prestressing force is placed in trench the cable body for drawing anchor cable 5, then by cable body two
Head passes through reserved pvc pipe and is locked in crown beam 2 by anchorage.And the anchor cable drilling 6 of waist rail layer uses fried dough twist drilled as holes, at
Bore dia is φ 60mm ~ 80mm, and construction angle is 0 °, and drilling vertical position setting is identical as the absolute altitude of type steel support beam 3, drilling
Horizontal space is arranged according to the spacing of foundation pit enclosure stake 1, about 2m, and then prestressing force bores the cable body of drawing anchor cable 5 across anchor cable
Hole 6 is locked on waist rail 7 by Anchor Cable Anchorage.
Foundation pit recess, between the adjacent foundation pit enclosure stake 1 of two neighboring foundation pit external corner 8, in crown beam 2 and foundation pit enclosure
At the pile body of stake 1, two type steel support beams 3 are respectively set.The both ends of the type steel support beam 3 are bolted, two types
Vertical spacing between bracing members beam 3 is 3 ~ 5m.
The type steel support beam 3 is vertically provided with steel column 4.The steel column 4 is H profile steel, when the length of type steel support beam 3
Degree can be not provided with steel column 4 when within 10m, must be provided with steel column 4 when the length of type steel support beam 3 is greater than 15m or more.Steel
The horizontal position middle of type steel support beam 3 is arranged in column 4, and steel column 4 is constructed in ground crown beam layer, and insertion hole bottom is long
Degree is not less than 3m.
After the completion of above-mentioned construction, the excavation of foundation pit can be carried out, when being excavated to second layer supporting construction position or less 500mm
When, it can be once again set up a kind of supporting construction at multiple external corners continuous in base pit engineering of a set of the utility model, then
Continue excavation pit until reaching foundation pit bottom.
Above embodiments are only to illustrate the technical solution of the utility model, rather than are limited；Although referring to before
Embodiment is stated the utility model is described in detail, it for those of ordinary skill in the art, still can be right
Technical solution documented by previous embodiment is modified or equivalent replacement of some of the technical features；And these
Modifications or substitutions, the utility model technical solution claimed that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of supporting construction at multiple external corners continuous in base pit engineering, including foundation pit enclosure stake (1), crown beam (2), type
Bracing members beam (3), prestressing force are to drawing anchor cable (5), which is characterized in that there are multiple continuous foundation pit external corners (8), the foundation pit encloses
Fender pile (1) is arranged along each foundation pit external corner (8) sideline, encloses the foundation pit in stake top setting crown beam (2) of foundation pit enclosure stake (1)
Fender pile (1) connection is integral, is symmetrical arranged on the inside of foundation pit on two rows of foundation pit enclosure stakes (1) of each foundation pit external corner (8)
At least 1 group of waist rail (7), the foundation pit enclosure stake (1), crown beam (2), setting anchor cable drills (6) on waist rail (7), in two rows of foundation pits
At least one prestressing force is set to anchor cable (5) are drawn, the prestressing force drills to drawing anchor cable (5) across anchor cable between fender post (1)
(6) foundation pit enclosure stake (1) is locked；Foundation pit recess, the adjacent foundation pit enclosure stake (1) of two neighboring foundation pit external corner (8) it
Between, at crown beam (2) and the pile body of foundation pit enclosure stake (1), an at least type steel support beam (3) is respectively set.
2. a kind of supporting construction at multiple external corners continuous in base pit engineering as described in claim 1, which is characterized in that
The foundation pit enclosure stake (1) is arranged along the sideline of each foundation pit external corner (8).
3. a kind of supporting construction at multiple external corners continuous in base pit engineering as described in claim 1, which is characterized in that
The prestressing force is locked in crown beam (2) and waist rail (7) the cable body both ends for drawing anchor cable (5) by anchorage.
4. a kind of supporting construction at multiple external corners continuous in base pit engineering as described in claim 1, which is characterized in that
The foundation pit enclosure stake (1) is cast-in-situ bored pile or engineering method stake, is connected by crown beam (2) integral.
5. a kind of supporting construction at multiple external corners continuous in base pit engineering as described in claim 1, which is characterized in that
The type steel support beam (3) is H profile steel or I-steel, and both ends are bolted.
6. a kind of supporting construction at multiple external corners continuous in base pit engineering as claimed in claim 5, which is characterized in that
Vertical spacing is 3 ~ 5m when the type steel support beam (3) setting.
7. a kind of supporting construction at multiple external corners continuous in base pit engineering as described in any of the above-described claim,
It is characterized in that, the type steel support beam (3) is vertically provided with steel column (4).
8. a kind of supporting construction at multiple external corners continuous in base pit engineering as claimed in claim 7, which is characterized in that
The steel column (4) is H profile steel.
9. a kind of supporting construction at multiple external corners continuous in base pit engineering as claimed in claim 7, which is characterized in that
The steel column (4) is arranged in type steel support beam (3) the horizontal position middle.
10. a kind of supporting construction at multiple external corners continuous in base pit engineering as claimed in claim 8, feature exist
In the length of the steel column (4) is foundation depth+insertion foundation pit bottom length, and insertion foundation pit bottom length is not less than 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820651577.2U CN208201885U (en) | 2018-05-03 | 2018-05-03 | A kind of supporting construction at multiple external corners continuous in base pit engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820651577.2U CN208201885U (en) | 2018-05-03 | 2018-05-03 | A kind of supporting construction at multiple external corners continuous in base pit engineering |
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| Publication Number | Publication Date |
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| CN208201885U true CN208201885U (en) | 2018-12-07 |
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ID=64522931
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820651577.2U Expired - Fee Related CN208201885U (en) | 2018-05-03 | 2018-05-03 | A kind of supporting construction at multiple external corners continuous in base pit engineering |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898521A (en) * | 2019-04-09 | 2019-06-18 | 大连交通大学 | A kind of anchored pile supporting and construction method for foundation pit external corner |
| CN110206038A (en) * | 2019-05-28 | 2019-09-06 | 中冶集团武汉勘察研究院有限公司 | Supporting construction and construction method at a kind of concave foundation pit external corner |
| CN114922198A (en) * | 2022-06-10 | 2022-08-19 | 济南轨道交通集团有限公司 | Foundation pit external corner supporting method and foundation pit construction method |
-
2018
- 2018-05-03 CN CN201820651577.2U patent/CN208201885U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898521A (en) * | 2019-04-09 | 2019-06-18 | 大连交通大学 | A kind of anchored pile supporting and construction method for foundation pit external corner |
| CN110206038A (en) * | 2019-05-28 | 2019-09-06 | 中冶集团武汉勘察研究院有限公司 | Supporting construction and construction method at a kind of concave foundation pit external corner |
| CN110206038B (en) * | 2019-05-28 | 2024-01-30 | 中冶集团武汉勘察研究院有限公司 | Supporting structure at external corner of concave foundation pit and construction method |
| CN114922198A (en) * | 2022-06-10 | 2022-08-19 | 济南轨道交通集团有限公司 | Foundation pit external corner supporting method and foundation pit construction method |
| CN114922198B (en) * | 2022-06-10 | 2024-03-15 | 济南轨道交通集团有限公司 | Foundation pit external corner supporting method and foundation pit construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 Termination date: 20210503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |