CN103174151A - Retaining reinforced structure for excavation of foundation pit adjacent to existing construction - Google Patents
Retaining reinforced structure for excavation of foundation pit adjacent to existing construction Download PDFInfo
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- CN103174151A CN103174151A CN2013100840279A CN201310084027A CN103174151A CN 103174151 A CN103174151 A CN 103174151A CN 2013100840279 A CN2013100840279 A CN 2013100840279A CN 201310084027 A CN201310084027 A CN 201310084027A CN 103174151 A CN103174151 A CN 103174151A
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- excavation
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Abstract
The invention provides a retaining reinforced structure for excavation of a foundation pit adjacent to existing construction so as to effectively achieve reinforcement and protection for excavation of a deep foundation pit adjacent to the existing construction sensitive to deformation. In addition, the reinforced structure is small in deformation and good in wholeness. The reinforced structure comprises reinforced concrete piles (10) and anchor ropes (20). The edges of the excavated foundation pit are designed to have rectangular sections, the lower portions of pile bodies penetrate through the base lines of the excavated foundation pit to be anchored in the good ground under the excavated foundation pit, and anchor rope holes are vertically arranged on the pile bodies at intervals. Both ends of the anchor ropes are respectively anchored with the pile bodies of the reinforced concrete piles (10) and the good ground at the side of the excavated foundation pit.
Description
Technical field
The present invention relates to adjacent existing important building excavation of foundation pit and reinforce, particularly near the deep pit digging reinforcement protection problem very responsive existing building of distortion.
Background technology
excavation of foundation pit is one of the most common engineering activity, but when the existing important building of excavation pit next-door neighbour, excavation of foundation pit and protection just become very careful, particularly when existing building is very responsive to distortion, traditional excavation of foundation pit spray anchor net protection, bored pile is gone along with sb. to guard him and just can not be satisfied existing building to the strict demand of distortion, particularly when excavation pit is darker, control to distortion just becomes more difficult, therefore, a kind of excavation of foundation pit of active demand props up gear ruggedized construction and solves near the deep pit digging reinforcement protection problem very responsive existing building of distortion, and meet the requirement of environmental protection.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of adjacent existing building excavation of foundation pit and props up gear ruggedized construction, with effective solution near the deep pit digging reinforcement protection problem very responsive existing building of distortion, and little, the good integrity of ruggedized construction distortion.
The technical solution adopted for the present invention to solve the technical problems is as follows:
Adjacent existing building excavation of foundation pit of the present invention props up gear ruggedized construction, it is characterized in that it comprises: reinforced concrete pile, adopt the square-section, be arranged on the excavation pit edge, the pile body bottom is passed through the excavation pit bottom line and is anchored in good ground under excavation pit, and on pile body, vertical interval arranges anchor cable hole; Anchor cable, two ends respectively with reinforced concrete pile pile body, the anchor connection of excavation pit side good ground.
The invention has the beneficial effects as follows, efficiently solve near the deep pit digging reinforcement protection problem very responsive existing building of distortion, this structure has that ruggedized construction distortion is little, easily adjustment of Deformation control, good integrity, economic dispatch characteristics, and meet environmental requirement, have wide popularizing application prospect.
Description of drawings
This manual comprises following two width accompanying drawings:
Fig. 1 is the schematic cross-sectional view that the adjacent existing building excavation of foundation pit of the present invention props up gear ruggedized construction;
Fig. 2 is the front schematic view that the adjacent existing building excavation of foundation pit of the present invention props up gear ruggedized construction.
Member spare shown in figure, toponym and corresponding mark: reinforced concrete pile 10, anchor cable hole 11, anchor cable 20, existing building A, foundation soil B, horizon d C, excavation pit bottom line D.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
See figures.1.and.2, adjacent existing building excavation of foundation pit of the present invention props up gear ruggedized construction and comprises: reinforced concrete pile 10, adopt the square-section, be arranged on the excavation pit edge, the pile body bottom is passed through excavation pit bottom line D and is anchored in good ground under excavation pit, and on pile body, vertical interval arranges anchor cable hole 11; Anchor cable 20, two ends respectively with reinforced concrete pile 10 pile bodies, the anchor connection of excavation pit side good ground.
Utilize reinforced concrete pile 10 to bear the soil pressure of excavation pit and the load that existing building A causes, and as the stressed supporter in the outside of anchor cable 2O, be arranged to its stress form of square-section better, and be beneficial to the construction of anchor cable 20.Utilize anchor cable 20 to share the stressed of part reinforced concrete pile 10, and reduce the cantilever height of reinforced concrete pile 10, thereby reduce the distortion of reinforced concrete pile 10.Anchor cable hole 11 on reinforced concrete pile 10 pile bodies is anchor cable 20 construction holes and reservation anchor cable hole, and 20 constructions are used and be standby as the emergency measure construction as anchor cable.This structure efficiently solves near the deep pit digging reinforcement protection problem very responsive existing building of distortion, this structure has that ruggedized construction distortion is little, easily adjustment of Deformation control, good integrity, economic dispatch characteristics, and meet environmental requirement, have wide popularizing application prospect.
See figures.1.and.2, according to deformation requirements, described reinforced concrete pile 10 adopts the square-section to arrange along the excavation pit continuous edge, i.e. not plotted not between the stake.Adopt during construction every 2 pile spacings excavation stake wells, when the concrete of pile body reach design strength 80% after, can excavate the stake well of all the other pile bodies and timely concreting.Can adopt manually digging hole form pile at reinforced concrete pile 10 in the part of soil layer, in work progress, fore shaft and retaining wall should be set in time, should adopt reinforced fore shaft and retaining wall, every joint cutting depth should not greater than 2m, must in time arrange fore shaft and retaining wall after excavation.Adopt the appropriate to the occasion employing short hole blasting excavation of hand excavation's stake well in basement rock.10 wells of described reinforced concrete pile should be at the pre-buried pvc pipe that arranges of anchor cable hole 11 correspondence positions when excavation arranges the fore shaft retaining wall.
With reference to Fig. 1, according to the distortion calculation requirement, described anchor cable 20 arranges a hole on reinforced concrete pile 10 pile bodies, and perhaps vertical interval 2～3m arranges or porous, and the length that the anchoring section of anchor cable 20 enters in good ground is not less than 10m.Described anchor cable 20 adopts Φ 15.2mm steel strand manufacturing usually, and steel strand intensity is 1860MPa, and every hole can be comprised of 4～8 bundle steel strand.Anchor cable 20 should in time be constructed during to the relevant position at excavation of foundation pit, and reaches the excavation of foundation pit that can carry out next step after intensity is set.
In reinforced concrete pile 10 and anchor cable 20 work progresss, all tackle existing building A and carry out deformation monitoring, and dynamically adjust stretching force and the anchor cable bundle number of anchor cable 20, guarantee the safety of existing existing building.
The adjacent existing building excavation of foundation pit of the above the present invention that just explains through diagrams props up some principles of gear ruggedized construction, be not be the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify that might be utilized and equivalent all belong to the scope of the claims that the present invention applies for.
Claims (4)
1. adjacent existing building excavation of foundation pit props up gear ruggedized construction, it is characterized in that it comprises: reinforced concrete pile (10), adopt the square-section to be arranged on the excavation pit edge, the pile body bottom is passed through excavation pit bottom line (D) and is anchored in good ground under excavation pit, and on pile body, vertical interval arranges anchor cable hole (11); Anchor cable (20), two ends respectively with reinforced concrete pile (10) pile body, the anchor connection of excavation pit side good ground.
2. adjacent existing building excavation of foundation pit as claimed in claim 1 props up gear ruggedized construction, it is characterized in that: described reinforced concrete pile (10) arranges along the excavation pit continuous edge.
3. adjacent existing building excavation of foundation pit as claimed in claim 1 props up gear ruggedized construction, it is characterized in that: described anchor cable (20) arranges a hole on reinforced concrete pile (10) pile body, and perhaps vertical interval 2～3m arranges or porous.
4. adjacent existing building excavation of foundation pit as claimed in claim 1 props up gear ruggedized construction, it is characterized in that: the length that the anchoring section of described anchor cable (20) enters in good ground is not less than 10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100840279A CN103174151A (en) | 2013-03-16 | 2013-03-16 | Retaining reinforced structure for excavation of foundation pit adjacent to existing construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100840279A CN103174151A (en) | 2013-03-16 | 2013-03-16 | Retaining reinforced structure for excavation of foundation pit adjacent to existing construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103174151A true CN103174151A (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100840279A Pending CN103174151A (en) | 2013-03-16 | 2013-03-16 | Retaining reinforced structure for excavation of foundation pit adjacent to existing construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN103174151A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498475A (en) * | 2013-10-12 | 2014-01-08 | 中国建筑股份有限公司 | Foundation pit supporting structure for controlling existing building deformation and construction method for excavating foundation pit |
| CN105970970A (en) * | 2016-05-25 | 2016-09-28 | 中国能源建设集团安徽电力建设第工程有限公司 | Pre-stressed anchor cable supporting construction method for near-railway deep foundation pit |
| CN106400814A (en) * | 2016-11-11 | 2017-02-15 | 天脊煤化工集团股份有限公司 | Foundation pit supporting method |
Citations (6)
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| CN1219630A (en) * | 1998-12-08 | 1999-06-16 | 李宪奎 | Formation method for retaining wall |
| JPH11222861A (en) * | 1998-02-04 | 1999-08-17 | Shimizu Corp | Execution of retaining wall to existing banking and retaining wall executed by the same |
| CN1970893A (en) * | 2006-07-13 | 2007-05-30 | 大连理工大学 | Connecting structure for use in piled anchor supporting system and its construction method |
| CN101775814A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Anti-slip cement soil pile soil blocking structure and construction method thereof |
| CN102108708A (en) * | 2010-12-16 | 2011-06-29 | 张继红 | Compound anchor rod foundation pit building envelope, construction method thereof and adopted cement soil notcher |
| CN203229956U (en) * | 2013-03-16 | 2013-10-09 | 中铁二院工程集团有限责任公司 | Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building |
-
2013
- 2013-03-16 CN CN2013100840279A patent/CN103174151A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11222861A (en) * | 1998-02-04 | 1999-08-17 | Shimizu Corp | Execution of retaining wall to existing banking and retaining wall executed by the same |
| CN1219630A (en) * | 1998-12-08 | 1999-06-16 | 李宪奎 | Formation method for retaining wall |
| CN1970893A (en) * | 2006-07-13 | 2007-05-30 | 大连理工大学 | Connecting structure for use in piled anchor supporting system and its construction method |
| CN101775814A (en) * | 2009-02-20 | 2010-07-14 | 上海强劲基础工程有限公司 | Anti-slip cement soil pile soil blocking structure and construction method thereof |
| CN102108708A (en) * | 2010-12-16 | 2011-06-29 | 张继红 | Compound anchor rod foundation pit building envelope, construction method thereof and adopted cement soil notcher |
| CN203229956U (en) * | 2013-03-16 | 2013-10-09 | 中铁二院工程集团有限责任公司 | Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498475A (en) * | 2013-10-12 | 2014-01-08 | 中国建筑股份有限公司 | Foundation pit supporting structure for controlling existing building deformation and construction method for excavating foundation pit |
| CN103498475B (en) * | 2013-10-12 | 2015-04-22 | 中国建筑股份有限公司 | Foundation pit supporting structure for controlling existing building deformation and construction method for excavating foundation pit |
| CN105970970A (en) * | 2016-05-25 | 2016-09-28 | 中国能源建设集团安徽电力建设第工程有限公司 | Pre-stressed anchor cable supporting construction method for near-railway deep foundation pit |
| CN106400814A (en) * | 2016-11-11 | 2017-02-15 | 天脊煤化工集团股份有限公司 | Foundation pit supporting method |
| CN106400814B (en) * | 2016-11-11 | 2021-03-16 | 天脊煤化工集团股份有限公司 | Foundation pit supporting method |
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Application publication date: 20130626 |