CN110528531A - A method of it utilizes and does close to foundation pit enclosure stake to excavation pit fender post - Google Patents
A method of it utilizes and does close to foundation pit enclosure stake to excavation pit fender post Download PDFInfo
- Publication number
- CN110528531A CN110528531A CN201910704694.XA CN201910704694A CN110528531A CN 110528531 A CN110528531 A CN 110528531A CN 201910704694 A CN201910704694 A CN 201910704694A CN 110528531 A CN110528531 A CN 110528531A
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- China
- Prior art keywords
- pit
- foundation pit
- fender post
- excavation
- excavated
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
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- 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)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The method done close to foundation pit enclosure stake to excavation pit fender post is utilized the invention discloses a kind of, it is described to around excavation pit close to the foundation pit for having excavated completion, the foundation pit for having excavated completion and it is described to excavation pit be inner bearing type building enclosure, the fender post capping beam absolute altitude of the foundation pit for having excavated completion is consistent with the capping beam absolute altitude to excavation pit or support absolute altitude, and the foundation pit for having excavated completion does not start the construction of the main structure of ± 0.0m or more.The method of the present invention, which will close on, has excavated the fender post for completing foundation pit as the fender post to excavation pit, this shares fender post and is connected with to excavation pit retaining design by support, with the structural column of excavation pit by supporting cant beam to be connected, so that the present invention has save the cost, facilitate construction, is conducive to the stable feature of deep pit monitor.
Description
Technical field
The present invention relates to civil construction project technical field of construction, do more particularly to a kind of using close to foundation pit enclosure stake
Method to excavation pit fender post.
Background technique
With the rapid development of Underground Space Excavation, foundation pit surrounding environment more sophisticated, multiple Adjacent Pits excavate simultaneously
The case where it is more common.Excavation of foundation pit area constantly increases at the same time, and big foundation pit is separated into small foundation pit in construction and is applied respectively
Work also becomes current common method.
It is influenced by the factors such as off-load are excavated, these foundation pits can generate significant impact each other in construction.Previous
Design and construction in, often take closing foundation ditch the measure of " isolation ", avoid as far as possible to closing foundation ditch generate disturbance, do so
It is not only uneconomical but also can also make foundation pit group's stress unreasonable sometimes.
Summary of the invention
The purpose of the present invention is, close to the case where having excavated completion foundation pit is closed on, propose a kind of utilization for excavation pit
The method to excavation pit fender post is done close to foundation pit enclosure stake.
A method of it does using close to foundation pit enclosure stake to excavation pit fender post, it is described to tight around excavation pit
Neighbour has excavated the foundation pit of completion, the foundation pit for having excavated completion and it is described to excavation pit be inner bearing type building enclosure, institute
State the fender post capping beam absolute altitude for having excavated the foundation pit of completion and the capping beam absolute altitude or support absolute altitude to excavation pit
Unanimously, the foundation pit for having excavated completion does not start the construction of the main structure of ± 0.0m or more.
Wherein, the fender post is the building enclosure as the foundation pit for having excavated completion, also as enclosing to excavation pit
Protection structure.
Wherein, the fender post is connect with the building enclosure to excavation pit by inner support.
Wherein, the fender post is with the structural column of the foundation pit for having excavated completion by supporting cant beam to connect.
Wherein, the method specifically includes:
(1) it treats excavation pit and carries out enclosure wall design；
(2) enclosure wall for having excavated the foundation pit of completion will be closed on as a part to excavation pit enclosure wall；
(3) it treats excavation pit and is supported arrangement；
(4) fender post is shared with the structural column for the foundation pit for having excavated completion by supporting cant beam to connect, and supports cant beam one end
It is connected with the capping beam of shared fender post, the other end of cant beam is supported to be connected with structural column；
(5) the foundation pit support changing structure for use for having excavated completion is reinforced, intersection, which is all made of structural beams and extends to support replacement, to be enclosed
The way of purlin, using steel channel connection structure plate and support replacement purlin between structural beams, channel steel both ends are using steel plate gasket top jail.
The invention has the benefit that
(1) saving construction cost: stress is carried out using closing foundation ditch fender post, can reduce to excavation pit building enclosure itself
Stress, stake spacing can be increased, supporting section product do it is small, to reduce cost.
(2) safety and stability is considered every possible angle two or more foundation pits by using closing foundation ditch fender post stress, can be with
Keep stress system more reasonable, foundation pit is more stable.
Detailed description of the invention
Fig. 1 is that the floor map done close to foundation pit enclosure stake to excavation pit fender post is utilized in the embodiment of the present invention；
Fig. 2 is that the diagrammatic cross-section done close to foundation pit enclosure stake to excavation pit fender post is utilized in the embodiment of the present invention；
Fig. 3 is excavation pit support replacement floor map.
Fig. 4 is the cant beam floor map of excavation pit support.
In figure, 1 is excavation pit, and 2 be shared fender post, and 3 be support, and 4 is, to excavation pit, 5 are to support cant beam, 6
It is capping beam for former capping beam, 7,8 be structure floor, and 9 be support replacement purlin, and 10 be channel steel, and 11 bit architecture beams, 12 be support replacement beam,
13 be structural column.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give several embodiments of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Fig. 1 is to be gone along with sb. to guard him to excavation pit in the embodiment of the present invention using doing close to foundation pit enclosure stake referring to FIG. 1 to FIG. 4,
The floor map of stake shares fender post 2, the branch to excavation pit it can be seen that the present embodiment includes excavation pit 1
Support 3, to excavation pit 4.In addition, in figure, 1 is excavation pit, and 2 is share fender post, and 3 be support, and 4 is to excavation pits, 5
To support cant beam, 6 be former capping beam, and 7 be capping beam, and 8 be structure floor, and 9 be support replacement purlin, and 10 be channel steel, 11 bit architecture beams,
12 be support replacement beam, and 13 be structural column.
It is connected with to excavation pit retaining design by support 3 as shown in Fig. 2, the present embodiment shares 2 right side of fender post,
2 left side of fender post is shared with the main structure of excavation pit 4 by supporting cant beam 5 to be connected.
As shown in figure 3, the present embodiment to excavation pit building enclosure because needing to be turned by excavation pit fender post
It changes, so excavation pit support changing structure for use needs to reinforce.Specific strengthening measure are as follows: intersection is all made of structural beams 11 and extends to support replacement
The way of purlin 9, using channel steel link structure plate 8 and support replacement purlin 9 between structural beams 11.
As shown in figure 4, the present embodiment support 5 one end of cant beam is connected with the capping beam of shared fender post 2, support cant beam 5
The other end is connected with structural column 13.
Unshared fender post part connects excavation pit main structure and fender post, every three rhizospheres shield by support replacement beam 12
Stake sets 12 1, support replacement beam, set on the centre of two fender posts.12 one end of support replacement beam anchors into ground with stake top jail, other end main reinforcement is gone along with sb. to guard him
Lower room exterior wall.
Support changing structure for use should all be arranged at two layers of underground and basement one floor absolute altitude.
Support cant beam main reinforcement, which anchors into length in structural column and capping beam, should meet related specification requirement.Support the width of cant beam 5
Degree is answered identical with corresponding 13 width of structural column.The local wide smaller part of column supports the width adjustment of cant beam 5 to same widths, high
It spends constant.
Specifically by taking certain engineering is 44 layers of building as an example, 3 layers of underground, basement cutting depth is 16.45m, and basement is not
The hexagon of rule.Closing on building is 26 layers of building, and 3 layers of underground, basement cutting depth 16.45m, basement is the four of rule
Side shape.As shown in Figure 1, three support systems are arranged in the present embodiment, first of support is arranged on basement the plan view of foundation pit
Portion, second support are arranged in the middle part of basement, and for the support setting of third road in basement lower part, three supports are reinforced concrete
Soil support.
The utilization of the present embodiment is done close to foundation pit enclosure stake to be specifically included to the method for excavation pit fender post:
(1) to 4 Design of Retaining Structure of excavation pit: building enclosure width is 1000mm, depth 32m, and fender post adopted
Concrete is C30.
(2) to 4 supported design of excavation pit: as shown in Figure 1, EF designs angle brace while with BD, GF is designed pair while with CD
Support, CG design angle brace while with CD.Support is all made of C30 concrete, supports main reinforcement protective layer thickness 25mm.Bed course is supported to use
10cm thickness C15 plain concrete overlays one layer of malthoid again, and every side bed course width, which is that support is wide, adds 20cm, answers when supporting lower earth excavation
Support foot mat is removed and is hurted sb.'s feelings in order to avoid falling.
(3) it has excavated and has completed the foundation pit support design of cant beam 5: as shown in Fig. 2, support 5 one end of cant beam anchors into shared fender post
Capping beam 7, as shown in figure 4, support 5 other end of cant beam anchors into structural column 13, support cant beam cross-sectional width is 800 × 800mm, office
At the wide 700mm of portion's column, support 5 cross-sectional width of cant beam is adjusted to 700 × 800mm.
(4) excavated and completed the design of foundation pit support replacement: as shown in figures 1 and 3, BD and DC intersection take structural beams 11 to extend
To the way of support replacement purlin 9,20b steel channel connection structure plate 8 and support replacement purlin 9 are used between structural beams, channel steel both ends use
10mm thickness 300 × 130mm steel plate gasket top jail.Support changing structure for use should all be arranged at two layers of underground and basement one floor absolute altitude.
(5) support post designs: the vertical upright column of cast-in-situ steel reinforced concrete support system is cast-in-situ bored pile, column top
For well word truss, well word truss gos deep into 2m in vertical upright column stake, and newly beating stand column pile strength grade of concrete is C25, utilizing works
Stake should also meet Construction of Engineering Pile requirement as the stake of column.The superfilled height for newly beating stand column pile is 1200mm.
The present invention carries out stress using closing foundation ditch fender post, can reduce to excavation pit building enclosure itself by
Power can increase stake spacing, supporting section product do it is small, to reduce cost.In addition, by the present invention in that being enclosed with closing foundation ditch
Fender pile stress considers every possible angle two or more foundation pits, stress system can be made more reasonable, foundation pit is more stable.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (5)
1. a kind of utilize the method done close to foundation pit enclosure stake to excavation pit fender post, which is characterized in that the base to be excavated
Close to the foundation pit for having excavated completion around hole, the foundation pit for having excavated completion and it is described to excavation pit be that inner bearing type encloses
Protection structure, the fender post capping beam absolute altitude of the foundation pit for having excavated completion and the capping beam absolute altitude to excavation pit or
Support absolute altitude consistent, the foundation pit for having excavated completion does not start the construction of the main structure of ± 0.0m or more.
2. according to claim 1 using the method to excavation pit fender post is done close to foundation pit enclosure stake, feature exists
In the fender post is the building enclosure as the foundation pit for having excavated completion, also as the building enclosure to excavation pit.
3. according to claim 2 using the method to excavation pit fender post is done close to foundation pit enclosure stake, feature exists
In the fender post is connect with the building enclosure to excavation pit by inner support.
4. according to claim 3 using the method to excavation pit fender post is done close to foundation pit enclosure stake, feature exists
In the fender post is with the structural column of the foundation pit for having excavated completion by supporting cant beam to connect.
5. according to claim 4 using the method to excavation pit fender post is done close to foundation pit enclosure stake, feature exists
In the method specifically includes:
(1) it treats excavation pit and carries out enclosure wall design；
(2) enclosure wall for having excavated the foundation pit of completion will be closed on as a part to excavation pit enclosure wall；
(3) it treats excavation pit and is supported arrangement；
(4) fender post is shared with the structural column for the foundation pit for having excavated completion by supporting cant beam to connect, and support cant beam one end is together
It is connected with the capping beam of fender post, the other end of cant beam is supported to be connected with structural column；
(5) the foundation pit support changing structure for use for having excavated completion is reinforced, intersection is all made of structural beams and extends to support replacement purlin
Way, using steel channel connection structure plate and support replacement purlin between structural beams, channel steel both ends are using steel plate gasket top jail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910704694.XA CN110528531A (en) | 2019-07-31 | 2019-07-31 | A method of it utilizes and does close to foundation pit enclosure stake to excavation pit fender post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910704694.XA CN110528531A (en) | 2019-07-31 | 2019-07-31 | A method of it utilizes and does close to foundation pit enclosure stake to excavation pit fender post |
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| Publication Number | Publication Date |
|---|---|
| CN110528531A true CN110528531A (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910704694.XA Pending CN110528531A (en) | 2019-07-31 | 2019-07-31 | A method of it utilizes and does close to foundation pit enclosure stake to excavation pit fender post |
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| CN (1) | CN110528531A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236255A (en) * | 2020-03-06 | 2020-06-05 | 华东建筑设计研究院有限公司 | Support structure capable of realizing cross implementation of adjacent foundation pits and application construction method thereof |
| CN113090066A (en) * | 2021-04-16 | 2021-07-09 | 华润建筑有限公司 | Construction method for newly added entrances and exits of existing buildings and elevator shaft |
| CN115288155A (en) * | 2022-08-19 | 2022-11-04 | 中国一冶集团有限公司 | Efficient building method of square-round combined ultra-deep permanent foundation pit supporting structure |
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| CN102465534A (en) * | 2010-11-11 | 2012-05-23 | 上海市第五建筑有限公司 | Construction method for adjacent double ditches |
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| CN206467684U (en) * | 2017-01-04 | 2017-09-05 | 中铁十六局集团北京轨道交通工程建设有限公司 | Existing subway station building enclosure hardened system is worn under a kind of shield |
| CN109505298A (en) * | 2015-10-26 | 2019-03-22 | 张继红 | A kind of self-balancing foundation pit enclosure method |
| CN110004919A (en) * | 2019-04-30 | 2019-07-12 | 中铁十局集团西北工程有限公司 | A kind of foundation pit enclosure construction method in pipeline coverage |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102465534A (en) * | 2010-11-11 | 2012-05-23 | 上海市第五建筑有限公司 | Construction method for adjacent double ditches |
| CN109505298A (en) * | 2015-10-26 | 2019-03-22 | 张继红 | A kind of self-balancing foundation pit enclosure method |
| CN107023015A (en) * | 2016-02-01 | 2017-08-08 | 上海城地建设股份有限公司 | A kind of new prefabricated two walls unification foundation pit system and its contrary sequence method |
| CN107023016A (en) * | 2016-02-01 | 2017-08-08 | 上海城地建设股份有限公司 | Two walls unification foundation pit system is worn under a kind of road and its along the practice |
| CN205712119U (en) * | 2016-03-25 | 2016-11-23 | 中铁三局集团广东建设工程有限公司 | A kind of little excavation structure closing on deep pit excavation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236255A (en) * | 2020-03-06 | 2020-06-05 | 华东建筑设计研究院有限公司 | Support structure capable of realizing cross implementation of adjacent foundation pits and application construction method thereof |
| CN113090066A (en) * | 2021-04-16 | 2021-07-09 | 华润建筑有限公司 | Construction method for newly added entrances and exits of existing buildings and elevator shaft |
| CN115288155A (en) * | 2022-08-19 | 2022-11-04 | 中国一冶集团有限公司 | Efficient building method of square-round combined ultra-deep permanent foundation pit supporting structure |
| CN115288155B (en) * | 2022-08-19 | 2023-10-27 | 中国一冶集团有限公司 | Efficient construction method of square and round combined ultra-deep permanent foundation pit supporting structure |
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Application publication date: 20191203 |