CN203229956U - Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building - Google Patents
Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building Download PDFInfo
- Publication number
- CN203229956U CN203229956U CN 201320120722 CN201320120722U CN203229956U CN 203229956 U CN203229956 U CN 203229956U CN 201320120722 CN201320120722 CN 201320120722 CN 201320120722 U CN201320120722 U CN 201320120722U CN 203229956 U CN203229956 U CN 203229956U
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- excavation
- foundation pit
- reinforced concrete
- existing building
- pit
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Abstract
The utility model discloses an excavation, retaining and reinforcing structure for a foundation pit adjacent to an existing building and aims at effectively solving the problems of excavation, reinforcing and protection of deep foundation pits adjacent to existing buildings which are quite sensitive to deformation. The reinforcing structure is small in deformation and good in integrality. The structure comprises reinforced concrete piles (10) and anchor cables (20), wherein the reinforced concrete piles (10) with rectangular sections are arranged at edges of the excavated foundation pit, lower portions of pile bodies penetrate base lines (D) of the excavated foundation pit and are anchored on the good ground below the excavated foundation pit, anchor cable holes (11) are vertically arranged on the pile bodies at intervals, two ends of the anchor cables (20) are connected with the pile bodies of the reinforced concrete piles (10) and the good ground on one side of the excavated foundation pit in an anchored mode respectively.
Description
Technical field
The utility model relates to adjacent existing important building excavation of foundation pit to be reinforced, 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 excavation pit is close to existing important building, 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 dark, Deformation Control is just become more difficult, therefore, a kind of excavation of foundation pit of active demand props up retaining ruggedized construction and solves near the deep pit digging reinforcement protection problem very responsive existing building of distortion, and meets environmental protection requirement.
The utility model content
Technical problem to be solved in the utility model provides a kind of adjacent existing building excavation of foundation pit and props up retaining 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 scheme that its technical problem that solves the utility model adopts is as follows:
Adjacent existing building excavation of foundation pit of the present utility model props up retaining 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 the excavation pit, the vertical anchor cable hole that arranges at interval on the pile body; Anchor cable, two ends respectively with reinforced concrete pile pile body, the anchor connection of excavation pit side good ground.
The beneficial effects of the utility model are, 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 compliance with environmental protection requirements, have wide popularizing application prospect.
Description of drawings
This manual comprises following two width of cloth accompanying drawings:
Fig. 1 is the schematic cross-sectional view that the adjacent existing building excavation of foundation pit of the utility model props up retaining ruggedized construction;
Fig. 2 is the front schematic view that the adjacent existing building excavation of foundation pit of the utility model props up retaining ruggedized construction.
Member spare shown in the 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
Below in conjunction with drawings and Examples the utility model is further specified.
See figures.1.and.2, adjacent existing building excavation of foundation pit of the present utility model props up retaining 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 the excavation pit, the vertical anchor cable hole 11 that arranges at interval on the pile body; Anchor cable 20, two ends respectively with reinforced concrete pile 10 pile bodies, the anchor connection of excavation pit side good ground.
The utility model utilizes 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, it is better to be arranged to its stress form of square-section, and is 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 reserves the anchor cable hole that 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 compliance with environmental protection requirements, have wide popularizing application prospect.
See figures.1.and.2, according to deformation requirements, described reinforced concrete pile 10 adopts square-sections to arrange along the excavation pit continuous edge, i.e. not plotted not between the stake.Adopt during construction every 2 a pile spacings excavation stake well, 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 the 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 must in time arrange fore shaft and retaining wall behind the excavation greater than 2m.In basement rock, adopt the appropriate to the occasion employing short hole blasting excavation of hand excavation's stake well.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 at reinforced concrete pile 10 pile bodies, and perhaps vertical 2～3m at interval arranges or porous, and the length that the anchoring section of anchor cable 20 enters in the 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 made up 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 the 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 utility model that just explains through diagrams props up some principles of retaining ruggedized construction, be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (4)
1. adjacent existing building excavation of foundation pit props up retaining 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 the excavation pit, the vertical anchor cable hole (11) that arranges at interval on the pile body; 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 retaining 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 retaining ruggedized construction, it is characterized in that: described anchor cable (20) arranges a hole at reinforced concrete pile (10) pile body, and perhaps vertical 2～3m at interval arranges or porous.
4. adjacent existing building excavation of foundation pit as claimed in claim 1 props up retaining ruggedized construction, it is characterized in that: the length that the anchoring section of described anchor cable (20) enters in the good ground is not less than 10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120722 CN203229956U (en) | 2013-03-16 | 2013-03-16 | Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120722 CN203229956U (en) | 2013-03-16 | 2013-03-16 | Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203229956U true CN203229956U (en) | 2013-10-09 |
Family
ID=49286089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120722 Expired - Fee Related CN203229956U (en) | 2013-03-16 | 2013-03-16 | Excavation, retaining and reinforcing structure for foundation pit adjacent to existing building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203229956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174151A (en) * | 2013-03-16 | 2013-06-26 | 中铁二院工程集团有限责任公司 | Retaining reinforced structure for excavation of foundation pit adjacent to existing construction |
-
2013
- 2013-03-16 CN CN 201320120722 patent/CN203229956U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174151A (en) * | 2013-03-16 | 2013-06-26 | 中铁二院工程集团有限责任公司 | Retaining reinforced structure for excavation of foundation pit adjacent to existing construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |