CN203034465U - Core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device - Google Patents
Core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device Download PDFInfo
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- CN203034465U CN203034465U CN 201320004947 CN201320004947U CN203034465U CN 203034465 U CN203034465 U CN 203034465U CN 201320004947 CN201320004947 CN 201320004947 CN 201320004947 U CN201320004947 U CN 201320004947U CN 203034465 U CN203034465 U CN 203034465U
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- buttress
- foundation pit
- pile
- inner support
- core soil
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Abstract
The utility model relates to the technical field of foundation pit support and protection construction of civil engineering, particularly to a core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device which comprises a supporting and protecting pile. The supporting and protecting pile and a basement floor are provided with an inclined support mechanism. Core soils are reserved at a position which is close to the supporting and protecting pile in a foundation pit which is arranged on one side of the inclined support mechanism. The core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device has the advantages of being applicable to geological conditions which are not suitable for foundation pit support and protection of pile anchors or cantilevers and horizontal inner supports, such as a geological condition that the surrounding geology is provided with unknown cables, pipe trenches or caves and a geological condition which cannot meet the requirements of anchor cable construction, convenient to perform construction and short in construction period.
Description
Technical field
The utility model relates to civil engineering foundation pit support construction technical field, more particularly, relates to the two oblique inner support foundation pit support devices of buttress of a kind of reservation core soil.
Background technology
Pattern foundation pit supporting structure is the important topic that important, large-scale or super-huge building basement construction both at home and abroad must face.Technical scheme commonly used at present is to put slope+pile-anchor system (as shown in Figure 1), or cantilever supporting+horizontal inner support, for the bad or peripheral soil body of peripheral soil property stone or pipeline is arranged, and should not adopt the foundation ditch of above method, pattern foundation pit supporting structure is set has bigger difficulty.
Research and tangible evidence prove that for piled anchor physique, the construction quality of anchor cable is the guarantee of foundation ditch safety by analysis, for fill out recently, mound and the cubic metre of earth and stone is mixed fills out uncompacted position, can't pore-forming.For not clear cable, pipe trench or cave are arranged in the anchor cable construction scope, the anchor cable construction difficulty will be caused and the uplift resistance requirement can not be satisfied, easily cause the potential safety hazard of foundation ditch.
A kind of horizontal jet grouting soil anchor and the compound foundation pit supporting construction of castinplace pile are disclosed as Chinese utility model patent ZL 201120563371.2, the sidewall of the foundation ditch of building is provided with the sealing agitation pile, the inboard of the water-stop curtain that the sealing agitation pile forms is provided with bored pile, the top of bored pile is provided with collar tie beam, the inside wall of bored pile and collar tie beam is provided with and passes bored pile or/and collar tie beam and level or the oblique anchoring pile of abduction down, one end of the steel strand in the anchoring pile is fixed on bored pile and the collar tie beam, the other end is connected with the anchor dish that is fixed on the anchoring pile end, the bottom of foundation ditch is provided with agitation pile sub-merged pier and the cushion cap of reinforcing usefulness
The described technical scheme of above-mentioned utility model namely belongs to piled anchor physique, is outside the deficiency: for fill out recently, mound and the cubic metre of earth and stone mix and to fill out uncompacted position, can't pore-forming.For not clear cable, pipe trench or cave are arranged in the anchor cable construction scope, the anchor cable construction difficulty will be caused and the uplift resistance requirement can not be satisfied, easily cause the potential safety hazard of foundation ditch.
For non-enclosed type supporting and protection structure, adopt horizontal inner support supporting, construction is complicated, and is long in time limit, the cost height.
A kind of foundation pit support device is disclosed as Chinese utility model patent ZL 201120410411.X, it comprises the vertical applied force plate that is arranged at the foundation pit walls design attitude, every certain distance a vertical applied force beam is set on the vertical applied force plate, every vertical applied force beam all can directly enter severely-weathered rock stratum or middle weathered rock formation or gentle breeze rock stratum; Foundation pit support device also comprises capping beam and the waist rail of the big rigidity of horizontal direction, and capping beam and waist rail all can link up all vertical applied force beams, and capping beam is arranged at the top of vertical applied force plate and vertical applied force beam; Intersection point place at vertical applied force beam and waist rail is provided with bracing or strutting arrangement or drag-line, in order to the power of providing support or drag-line power.
The described technical scheme of above-mentioned utility model namely belongs to horizontal inner support supporting, is outside the deficiency: construction is complicated, and is long in time limit, the cost height.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of and be applicable to that peripheral geology has not clear cable, pipe trench or cave, geological conditions can't satisfy the two oblique inner support foundation pit support devices of buttress of reservation core soil of geological conditions that anchor cable construction etc. should not adopt the pattern foundation pit supporting structure of piled anchor or cantilever+horizontal inner support, and easy construction, duration are short.
The technical solution of the utility model is as follows:
The two oblique inner support foundation pit support devices of buttress of a kind of reservation core soil comprise soldier pile, and soldier pile and basement bottom board arrange diagonal brace mechanism, reserve core soil in the position near soldier pile in the foundation ditch of diagonal brace mechanism one side.
As preferably, described diagonal brace mechanism is: bury the pile body buttress underground at the supporting pile body, bury the base plate buttress underground at basement bottom board, diagonal brace has raker beam between pile body buttress and base plate buttress.
As preferably, adopt the bar planting structure to be consolidated into integrative-structure between pile body buttress and soldier pile.
As preferably, pile body buttress, base plate buttress are provided with steel plate, as the tie point of raker beam.
As preferably, the diagonal brace angle of raker beam is 50 °-60 °.
As preferably, the diagonal brace angle of raker beam is 50 °-55 °.
As preferably, the length of raker beam is not more than 15 meters.
The beneficial effects of the utility model are as follows:
1, by stay core soil at passive area, increases the passive area soil pressure, change the stress of soldier pile, reduce soil excavation.
2, break traditions the innovation job practices.For a long time, soldier pile often adopts the construction of anchor cable horizontal access node, and the construction period is long, the construction technology complexity, and each operation is strict, and especially the quality of mortar depositing construction determines the relay of anchor cable, and is strict to the exploration of peripheral geology.Adopt method described in the utility model, as long as hole subsoil matter satisfies the diagonal brace requirement, need not peripheral geology is carried out detail knowledge, under special geologic condition, foundation ditch construction method is more advanced a bit.
3, method of the present utility model, it is simple to construct, and draws materials conveniently, installs simply, safe and reliable, and all right secondary recovery utilization of steel diagonal brace is increased economic efficiency greatly, meets national energy-conserving and environment-protective policy.
4, can be at home and abroad, extensively promote in the foundation pit support construction of land, improve efficiency of construction, produce huge economic results in society.
Description of drawings
Fig. 1 is pile-anchor system structural representation of the prior art;
Fig. 2 is the structural representation of the utility model embodiment one;
Fig. 3 is bar planting structural profile schematic diagram;
Fig. 4 is the syndeton generalized section of bar planting structure and steel plate;
Among the figure: the 1st, soldier pile, the 2nd, core soil, the 3rd, pile body buttress, the 4th, base plate buttress, the 5th, raker beam, the 6th, steel plate, the 7th, basement bottom board, the 8th, Guan Liang, the 9th, indented bars.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described in detail.
Embodiment one
As shown in Figure 2, the two oblique inner support foundation pit support devices of buttress of a kind of reservation core soil comprise soldier pile 1, and soldier pile 1 arranges diagonal brace mechanism with basement bottom board 7, reserves core soil in the position near soldier pile 1 in the foundation ditch of diagonal brace mechanism one side.Described diagonal brace mechanism is: bury pile body buttress 3 underground at soldier pile 1 body, bury base plate buttress 4 underground at basement bottom board 7,4 diagonal braces of pile body buttress 3 and base plate buttress have raker beam 5.
Core soil 2 is to be positioned at inboard (passive area) undisturbed soil near the stake position of foundation ditch.During soil excavation, reserve the certain width earthwork with increase passive area soil pressure at soldier pile 1 passive area, thereby reduce the pressure that soldier pile 1 passes to raker beam 5; Behind the excavation, carry out pile body buttress 3,4 constructions of base plate buttress earlier, after the buttress concrete strength reaches 80% design strength, can carry out the arrangement of raker beam 5.After raker beam 5 is set finishes, adopt machinery to carry out soil excavation earlier, locally adopt the hand excavation, prevent in the excavation that machinery from influencing support strength and stress in digging process.
Raker beam 5 is between pile body buttress 3, base plate buttress 4, is used for transmitting the connecting elements of soldier pile 1 load, and the strength and stiffness of diagonal brace can be enough to support the load that soldier pile 1 transmits, and generally adopt shaped steel, and length is controlled in 15m.
Raker beam 5 diagonal braces are on the steel plate 6 on pile body buttress 3, the base plate buttress 4, and diagonal brace raker beam 5 adopts welding manner to be connected with 6 of steel plates.
Present embodiment is the embodiment of no cushion cap, and the diagonal brace angle of described raker beam 5 is all can meet the requirements in 50 ° of-60 ° of scopes, and in the present embodiment, the diagonal brace angle is 55 °.
Embodiment two
Present embodiment is the embodiment that cushion cap is arranged, and preferred, the diagonal brace angle of shaped steel is 50 ° of-55 ° of intervals, can meet the requirements, and in the present embodiment, the diagonal brace angle is 50 °.
In the practice of construction, complete step is as follows:
The first step: soldier pile 1 construction
Second step: hat beam 8 constructions
The 3rd step: cubic metre of earth stage excavation carries out 3 constructions of pile body buttress to pile body buttress 3 positions;
The 4th step: cubic metre of earth layer and section excavation, keep somewhere core soil 2;
The 5th step: base plate buttress 4 waters smashes construction;
The 6th step: raker beam 5 hoisted in position and with steel plate 6 firm welding of pile body buttress 3, base plate buttress 4;
The 7th step: basement bottom board 7 and shear wall construction, backfilling of earthwork and disturbing concrete load transfering strip;
The 8th step: raker beam 5 is removed.
Take the working procedure of excavation section by section, segmentation propping behind soldier pile 1 pile, the soil excavation section length is controlled in 30-40m.Foundation ditch excavation section by section, segmentation propping make the foundation ditch external load be delivered to basement bottom board 7 by oblique inner support, and soldier pile 1 does not need anchor cable and horizontal brace supporting, can not destroy peripheral soil layer, easy construction.
Above-described embodiment only is that the utility model is described, and is not with the restriction of the present utility model of opposing.So long as according to technical spirit of the present utility model, to above-described embodiment change, modification etc. all will drop in the scope of claim of the present utility model.
Claims (7)
1. reserve the two oblique inner support foundation pit support devices of buttress of core soil for one kind, comprise soldier pile, it is characterized in that soldier pile and basement bottom board arrange diagonal brace mechanism, in the foundation ditch of diagonal brace mechanism one side, reserve core soil in the position near soldier pile.
2. two oblique inner support foundation pit support devices of buttress of reservation core according to claim 1 soil, it is characterized in that, described diagonal brace mechanism is: bury the pile body buttress underground at the supporting pile body, bury the base plate buttress underground at basement bottom board, diagonal brace has raker beam between pile body buttress and base plate buttress.
3. the two oblique inner support foundation pit support devices of buttress of reservation core soil according to claim 2 is characterized in that, adopt the bar planting structure to be consolidated into integrative-structure between pile body buttress and soldier pile.
4. the two oblique inner support foundation pit support devices of buttress of reservation core soil according to claim 2 is characterized in that pile body buttress, base plate buttress are provided with steel plate, as the tie point of raker beam.
5. the two oblique inner support foundation pit support devices of buttress of reservation core soil according to claim 2 is characterized in that the diagonal brace angle of raker beam is 50 °-60 °.
6. the two oblique inner support foundation pit support devices of buttress of reservation core soil according to claim 5 is characterized in that the diagonal brace angle of raker beam is 50 °-55 °.
7. the two oblique inner support foundation pit support devices of buttress of reservation core soil according to claim 2 is characterized in that the length of raker beam is not more than 15 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004947 CN203034465U (en) | 2013-01-06 | 2013-01-06 | Core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004947 CN203034465U (en) | 2013-01-06 | 2013-01-06 | Core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203034465U true CN203034465U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320004947 Expired - Lifetime CN203034465U (en) | 2013-01-06 | 2013-01-06 | Core soil reserved double-buttress inclined inner support foundation pit supporting and protecting device |
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| CN (1) | CN203034465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114595A (en) * | 2013-01-06 | 2013-05-22 | 厦门源昌城建集团有限公司 | Support method and device of support pile preformed core-soil double-buttress inclined inner-strut foundation ditch |
-
2013
- 2013-01-06 CN CN 201320004947 patent/CN203034465U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114595A (en) * | 2013-01-06 | 2013-05-22 | 厦门源昌城建集团有限公司 | Support method and device of support pile preformed core-soil double-buttress inclined inner-strut foundation ditch |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |