CN203256753U - Supporting structure of foundation ditch - Google Patents
Supporting structure of foundation ditch Download PDFInfo
- Publication number
- CN203256753U CN203256753U CN 201320293348 CN201320293348U CN203256753U CN 203256753 U CN203256753 U CN 203256753U CN 201320293348 CN201320293348 CN 201320293348 CN 201320293348 U CN201320293348 U CN 201320293348U CN 203256753 U CN203256753 U CN 203256753U
- Authority
- CN
- China
- Prior art keywords
- pile
- foundation
- supporting
- axle agitation
- protection structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a supporting structure of a foundation ditch. A cast-in-place pile is arranged on the outer side of the foundation ditch, a composite foundation is arranged on the outer side of the cast-in-place pile, and the composite foundation is provided with a plurality of first three-shaft stirring piles which are tightly connected to form a rectangular frame. The face, opposite to the cast-in-place pile, of the rectangular frame is tightly attached to the outer side of the cast-in-place pile. Due to the fact that the outer side of the cast-in-place pile is provided with the composite foundation, the pressure distribution and the pressure level of soil outside the cast-in-place pile can be improved, the number of supporting fulcrums inside the cast-in-place pile is reduced, the materials for manufacturing the cast-in-place pile are reduced, construction cost is reduced, construction is convenient and construction period is shortened.
Description
Technical field
The utility model relates to the building fixed structure, is specifically related to a kind of supporting and protection structure of foundation ditch.
Background technology
Along with greatly developing of urban construction, especially the development process of urban underground space is accelerated, and foundation pit supporting project also becomes gradually the focus, particularly soft soil area that construction field pays close attention to or has foundation pit supporting project than the thick sand bed zone.At present, by being set, inner support or soil nailing or anchor cable reinforce in piling structure or the diaphragm wall that the supporting and protection structure of using in foundation pit supporting project mainly utilizes the concrete bored concrete pile to form, cast-in-place concrete pile or diaphragm wall.Although cast-in-place concrete pile or diaphragm wall are safe and reliable in conjunction with the form of inner support technically, in large-area foundation ditch, cost is too high, the duration is long, construction is inconvenient.Simultaneously, owing to anchor cable, soil nailing usually exceed land red-line, this will directly affect the safety of adjacent building and pipeline, and cause more underground building rubbish owing to it is not recyclable, cause a series of bad social influences.
The utility model content
The deficiency that the utility model exists in order to overcome above prior art provides a kind of simple and reasonable for structure, reduces material cost, and easy construction, the supporting and protection structure of dwindling the foundation ditch of duration.
The purpose of this utility model realizes by following technical scheme: the supporting and protection structure of this foundation ditch, the outside of described foundation ditch is provided with castinplace pile, the outside of described castinplace pile is provided with composite foundation, described composite foundation is provided with a plurality of the one or three axle agitation piles, described a plurality of the one or three axle agitation pile closely connects, and forms a rectangle frame; Wherein, the face that described rectangle frame is relative with castinplace pile is close to the outside of castinplace pile.
Be provided with a plurality of the two or three axle agitation piles in the described rectangle frame, described the two or three axle agitation pile closely connects, and arranges in length and breadth, forms a plurality of interconnective rectangles.The two or three axle agitation pile can increase the intensity of composite foundation, strengthens the effect that composite foundation improves the outer lateral earth pressure of castinplace pile.
Be provided with a plurality of the two or three axle agitation piles in the described rectangle frame, described the two or three axle agitation pile closely connects, and forms a plurality of interconnective hexagons or triangle.With above-mentioned, the intensity that the two or three axle agitation pile increases composite foundation is set, and the two or three axle agitation pile forms no matter is rectangle after closely connecting in rectangle frame, or other figures such as hexagon or triangle, all can reach same effect such as rhombus etc.
The native replacement ratio of stake in the described composite foundation is greater than 0.3, and namely the gross sectional area of the one or three axle agitation pile and the two or three axle agitation pile and the ratio of the gross area of composite foundation are greater than 0.3.In composite foundation, the inter-pile soil body that a pile and it are born is a composite earth body unit.In this combined wall unit, the basal area of stake and the ratio of composite earth body unit area are called the native replacement ratio of stake.
Described the one or three axle agitation pile and the two or three axle agitation pile all are cylindric, and diameter all is 800mm～900mm.
The width a of described rectangle frame is 0.85～1 times of foundation depth.
The supporting and protection structure of described foundation ditch also comprises anchor cable mechanism, and described anchor cable mechanism is arranged in the one or the three axle agitation pile, and is positioned at the outside of composite foundation; Described anchor cable mechanism comprises billet, anchor cable and ground tackle, described ground tackle comprises free segment and canned paragraph, described free segment passes the one or three axle agitation pile from bottom to top, and the upper surface of composite foundation is fixed in by billet in the upper end of described free segment, and described canned paragraph is positioned at the below of free segment; Described anchor cable inserts free segment and canned paragraph successively, and the bottom of canned paragraph is fixed in the lower end of described anchor cable.By in composite foundation, increasing by a vertical anchor cable mechanism, thereby improve the frictional force of composite foundation bottom, be conducive to reduce the pressure of castinplace pile; Simultaneously, the outside with anchor cable mechanism is arranged at composite foundation makes anchor cable mechanism that composite foundation is produced favourable overturning or slip resistance analysis moment, thereby reduces the displacement at castinplace pile top.
The diameter of described ground tackle is 100mm～200mm.
The top of described castinplace pile is provided with collar tie beam.By collar tie beam that each root castinplace pile connection is in aggregates, thus the rigidity of increase castinplace pile.The quantity of castinplace pile can be according to the decisions such as condition of size and the geology of foundation ditch.
The utility model has following advantage with respect to prior art: the utility model is by the arranged outside composite foundation at castinplace pile, thereby can improve pressure distribution and the size of castinplace pile outside earth, then can reduce the support fulcrum quantity in the castinplace pile, reduced the making material of castinplace pile, reduced construction costs, and easy construction, dwindled the duration; The utility model utilizes composite foundation can avoid anchor cable and soil nailing to exceed land red-line, so can not affect the safety of adjacent building and pipeline, has reduced simultaneously underground building rubbish, avoids society is caused bad impact.
Description of drawings
Fig. 1 is the structural representation of the supporting and protection structure of a kind of foundation ditch of the present utility model.
Fig. 2 is the sectional view of A-A direction among Fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The supporting and protection structure of a kind of foundation ditch as depicted in figs. 1 and 2, the outside of described foundation ditch is provided with castinplace pile 1, and the outside of described castinplace pile 1 is provided with composite foundation, and described composite foundation is provided with a plurality of the one or three axle agitation piles 2, described a plurality of the one or three axle agitation pile 2 closely connects, and forms a rectangle frame; Wherein, described rectangle frame and castinplace pile 1 relative face is close to the outside of castinplace pile 1.
Be provided with a plurality of the two or three axle agitation piles 3 in the described rectangle frame, described the two or three axle agitation pile 3 closely connects, and arranges in length and breadth, forms a plurality of interconnective rectangles.The two or three axle agitation pile 3 can increase the intensity of composite foundation, strengthens the effect that composite foundation improves castinplace pile 1 outer lateral earth pressure.
The native replacement ratio of stake in the described composite foundation is 0.4, and namely the gross sectional area of the one or three axle agitation pile 2 and the two or three axle agitation pile 3 is 0.4 with the ratio of the gross area of composite foundation.In composite foundation, the inter-pile soil body that a pile and it are born is a composite earth body unit.In this combined wall unit, the basal area of stake and the ratio of composite earth body unit area are called the native replacement ratio of stake.
Described the one or three axle agitation pile 2 and the two or three axle agitation pile 3 all are cylindric, and diameter all is 850mm.
The width a of described rectangle frame is 0.9 times of foundation depth.
The supporting and protection structure of described foundation ditch also comprises anchor cable mechanism 4, and described anchor cable mechanism 4 is arranged in the one or the three axle agitation pile 2, and is positioned at the outside of composite foundation; Described anchor cable mechanism 4 comprises billet 43, anchor cable 41 and ground tackle 42, described ground tackle 42 comprises free segment 421 and canned paragraph 422, described free segment 421 passes the one or three axle agitation pile 2 from bottom to top, the upper surface of composite foundation is fixed in by billet 43 in the upper end of described free segment 421, and described canned paragraph 422 is positioned at the below of free segment 421; Described anchor cable 41 inserts free segment 421 and canned paragraph 422 successively, and the bottom of canned paragraph 422 is fixed in the lower end of described anchor cable 41.By in composite foundation, increasing by a vertical anchor cable mechanism 4, thereby improve the frictional force of composite foundation bottom, be conducive to reduce the pressure of castinplace pile 1; Simultaneously, the outside with anchor cable mechanism 4 is arranged at composite foundation makes anchor cable mechanism that 4 pairs of composite foundations produce favourable overturning or slip resistance analysis moment, thereby reduces the displacement at castinplace pile 1 top.
The diameter of described ground tackle 42 is 150mm.
The top of described castinplace pile 1 is provided with collar tie beam 5.By collar tie beam 5 that each root castinplace pile 1 connection is in aggregates, thus the rigidity of increase castinplace pile 1.
In the present embodiment, the degree of depth of foundation ditch is 13m, and geological conditions is: 0～2.3m is plain fill, and 2.3～14.8m is fine sand layer, and 14.8～19.8m is argillic horizon, and 19.8～25.1m is severely-weathered layer, below is middle weathered rocks.If adopt castinplace pile 1 to add the conventional supporting scheme of inner support, need two-layer inner support, the about 13000m of inner support total length adopts about 580 of castinplace pile quantity, and only the cost of support and castinplace pile namely surpasses 3,000 ten thousand.And utilize the supporting and protection structure of the foundation ditch of present embodiment, the composite foundation of utilization take the one or three axle agitation pile 2 and the two or three axle agitation pile 3 as main body, then can save the inner support in the castinplace pile 1, also can reduce simultaneously the quantity of castinplace pile 1, and can reach better technique effect and economic benefit.
The supporting and protection structure of this foundation ditch except following feature with embodiment 1: be provided with a plurality of the two or three axle agitation piles 3 in the described rectangle frame, described the two or three axle agitation pile 3 closely connects, and forms a plurality of interconnective hexagons or triangle.The preferred triangle of present embodiment.
The above-mentioned specific embodiment is preferred embodiment of the present utility model; can not limit the utility model; other any change that does not deviate from the technical solution of the utility model and make or other equivalent substitute mode are included within the protection domain of the present utility model.
Claims (9)
1. the supporting and protection structure of a foundation ditch, the outside of described foundation ditch is provided with castinplace pile, it is characterized in that: the outside of described castinplace pile is provided with composite foundation, and described composite foundation is provided with a plurality of the one or three axle agitation piles, described a plurality of the one or three axle agitation pile closely connects, and forms a rectangle frame; Wherein, the face that described rectangle frame is relative with castinplace pile is close to the outside of castinplace pile.
2. the supporting and protection structure of a kind of foundation ditch according to claim 1, it is characterized in that: be provided with a plurality of the two or three axle agitation piles in the described rectangle frame, described the two or three axle agitation pile closely connects, and arranges in length and breadth, forms a plurality of interconnective rectangles.
3. the supporting and protection structure of a kind of foundation ditch according to claim 1, it is characterized in that: be provided with a plurality of the two or three axle agitation piles in the described rectangle frame, described the two or three axle agitation pile closely connects, and forms a plurality of interconnective hexagons or triangle.
4. according to claim 2 or the supporting and protection structure of 3 described a kind of foundation ditches, it is characterized in that: the native replacement ratio of stake in the described composite foundation is greater than 0.3, and namely the gross sectional area of the one or three axle agitation pile and the two or three axle agitation pile and the ratio of the gross area of composite foundation are greater than 0.3.
5. according to claim 2 or the supporting and protection structure of 3 described a kind of foundation ditches, it is characterized in that: described the one or three axle agitation pile and the two or three axle agitation pile all are cylindric, and diameter all is 800mm～900mm.
6. the supporting and protection structure of a kind of foundation ditch according to claim 1, it is characterized in that: the width a of described rectangle frame is 0.85～1 times of foundation depth.
7. the supporting and protection structure of a kind of foundation ditch according to claim 1 is characterized in that: also comprise anchor cable mechanism, described anchor cable mechanism is arranged in the one or the three axle agitation pile, and is positioned at the outside of composite foundation; Described anchor cable mechanism comprises billet, anchor cable and ground tackle, described ground tackle comprises free segment and canned paragraph, described free segment passes the one or three axle agitation pile from bottom to top, and the upper surface of composite foundation is fixed in by billet in the upper end of described free segment, and described canned paragraph is positioned at the below of free segment; Described anchor cable inserts free segment and canned paragraph successively, and the bottom of canned paragraph is fixed in the lower end of described anchor cable.
8. the supporting and protection structure of a kind of foundation ditch according to claim 7, it is characterized in that: the diameter of described ground tackle is 100mm～200mm.
9. the supporting and protection structure of a kind of foundation ditch according to claim 1, it is characterized in that: the top of described castinplace pile is provided with collar tie beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293348 CN203256753U (en) | 2013-05-24 | 2013-05-24 | Supporting structure of foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293348 CN203256753U (en) | 2013-05-24 | 2013-05-24 | Supporting structure of foundation ditch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203256753U true CN203256753U (en) | 2013-10-30 |
Family
ID=49469332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320293348 Expired - Lifetime CN203256753U (en) | 2013-05-24 | 2013-05-24 | Supporting structure of foundation ditch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203256753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317036A (en) * | 2015-05-19 | 2016-02-10 | 华北水利水电大学 | Sheet-shaped underground diaphragm wall structure |
-
2013
- 2013-05-24 CN CN 201320293348 patent/CN203256753U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317036A (en) * | 2015-05-19 | 2016-02-10 | 华北水利水电大学 | Sheet-shaped underground diaphragm wall structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1837511B (en) | Double-rowed cofferdam and method for manufacturing the same | |
| CN204023431U (en) | A kind of corrugated steel culvert fills structure | |
| CN103437567A (en) | Method for supporting existing building underground added storey through original pile foundations | |
| CN208472495U (en) | A kind of composite reinforcing structure of highway subgrade soft layer | |
| CN103104102B (en) | Construction method for underground storey-addition reconstruction | |
| CN101838996A (en) | Sea gravity type pile foundation combined fan foundation | |
| CN102864780A (en) | Supporting structure and supporting method of foundation pit | |
| CN202809501U (en) | Reinforced load reducing structure of motorway high filling culvert in mountainous area | |
| CN201459756U (en) | Hanging-type construction ceiling coil vertical shaft | |
| CN203238642U (en) | Supporting retaining wall of foundation pit | |
| CN103711139A (en) | Semi-rigid connection structure between pile foundation and bearing platform | |
| CN201843135U (en) | Composite foundation pile in power transmission line | |
| CN202644591U (en) | A reinforced bridge pile foundation in tunnel construction under the geological condition of water-rich quicksand | |
| CN114086586A (en) | Pile foundation construction method and structure for installing photovoltaic panel on steep slope | |
| CN102966109A (en) | Method for constructing zonal deep foundation pit bottom sealing of soft soil foundation | |
| CN203256753U (en) | Supporting structure of foundation ditch | |
| CN204662246U (en) | steep slope bridge pier structure | |
| CN103410155B (en) | A kind of recyclable preposition assembling braced cuts structure and application process thereof | |
| CN215252932U (en) | Deep foundation pit PC steel pipe combination Larsen steel sheet pile double row pile supporting system | |
| CN205907673U (en) | Steel sheet pile structure for bridge main pier bearing platform foundation pit on river channel steep slope bedrock | |
| CN202247929U (en) | Plug-shaped bearing platform structure | |
| CN202090356U (en) | Novel composite pile foundation | |
| CN201738286U (en) | Tetrapod pier type structure | |
| CN201169781Y (en) | Cap digging pit structure | |
| CN203256675U (en) | Wall pile framework structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |