CN204098043U - After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles - Google Patents

After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles Download PDF

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Publication number
CN204098043U
CN204098043U CN201420544724.8U CN201420544724U CN204098043U CN 204098043 U CN204098043 U CN 204098043U CN 201420544724 U CN201420544724 U CN 201420544724U CN 204098043 U CN204098043 U CN 204098043U
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double
inner support
construction
soil
row pile
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CN201420544724.8U
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马郧
郭运
刘佑祥
龙雄华
张杨
范晓峰
龙晓东
罗春雨
李松
杜金龙
朱佳
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Zhongnan Survey And Design Institute (hubei) Co Ltd
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Zhongnan Survey And Design Institute (hubei) Co Ltd
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Abstract

The utility model relates to a kind of foundation pit supporting construction, and after specifically staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles, comprises double-row pile, is close to the local inner support staying the soil body and support double-row pile at the bottom of the hole of double-row pile.By basin excavation method at the hole end reserved part soil body, due to the advantageous effect of the soil body, now can not inner support be set.Then the basement structure beyond construction remaining soils, and local inner support is set between basement floor and double-row pile, now can excavate the soil body, and then the basement structure at construction soil body place.Compared with conventional structure, this supporting and protection structure makes full use of the advantageous effect of remaining soils, avoids large area to arrange inner support system, for basement structure large-area construction provides space; The inner support of some is only set in the subrange near supporting and protection structure, now can excavates and stay soil, carry out residue basement structure construction, and progressively change support.The utility model can reach the reduction of erection time, reduce the object of cost, and quick construction, easy.

Description

After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles
Technical field
The utility model relates to a kind of foundation pit supporting construction, is particularly useful for large area comparatively deep pit digging supporting.
Technical background
Along with socioeconomic high speed development, the anxiety of urban land impels construction of structures constantly to expand to the underground space, accelerate the exploitation of urban underground space, cause city excavation of foundation pit scale towards larger darker future development, this proposes new requirement to the design theory of foundation pit supporting construction and construction technology.In such a situa-tion, traditional supporting structure system: as single cantilever pile, the theoretical supporting degree of depth is no more than 6m, and Deformation control ability, unfavorable to the protection of surrounding enviroment condition; The theoretical supporting degree of depth of double-row pile is no more than 12m; Although single cantilever pile or double-row pile combine the shortcoming that the supporting and protection structure form of retouching support can overcome supporting degree of depth deficiency to a certain extent, this support form is higher to surrounding enviroment conditional request; Outside hole, need enough support unit spatial accommodations; In hole, large-area inner support needs to take part construction space.The constructing layer by layer and to change and can to the optimization mineralization pressure of duration of anchor support component, and large area inner support is difficult to carry out the construction of subregion burst.Under the situation that urban land growing tension, construction period are more strict, contradiction between the two highlights and irreconcilable.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of foundation pit supporting construction, and little, the applicability of this foundation pit supporting construction distortion is strong, easy construction, cost performance are good.
Technical solution of the present utility model is: after staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles, comprises double-row pile, is close to the local inner support staying the soil body and support double-row pile at the bottom of the hole of double-row pile.
Stay the soil body to be close to the bottom of double-row pile at the bottom of described hole, local inner support is connected with the top of double-row pile.
Described double-row pile comprises front campshed, rear campshed, front campshed stake apical cap beam, rear campshed stake apical cap beam and the crossbeam being connected front campshed stake apical cap beam and rear campshed stake apical cap beam.
Stay soil to be close to front campshed at the bottom of described hole, described local inner support is connected with front campshed.
The utility model local inner support can adopt section steel beam, steel tubular beam or reinforced concrete beam.
Also cement mixing pile can be provided with between the front campshed of the utility model and rear campshed.
By double-row pile, stay soil, local inner support, the combination of basement floor, guarantees the safety of foundation pit construction, economy and high efficiency.
Little, the applicability of the utility model distortion is strong, easy construction, cost performance are good.Solve many difficult points that traditional supporting and protection structure faces preferably, guarantee the safety of foundation pit construction, economy and high efficiency; It is a kind of safe and reliable, environmental protection supporting structure system of adapting to current construction situation.
The beneficial effects of the utility model are: without the need to arranging the buried support unit of the permanent type such as anchor pole, anchor cable extension, can not produce the problems such as ground base ring environment pollution, and be convenient to follow-up planning and the exploitation of adjacent periphery land used; Need not arrange reinforced concrete support component on a large scale in foundation ditch, facilitate dig on a wide area, accelerate speed of application, the construction of local inner support and dismounting also more for convenience, create advantage for agent structure goes out hole fast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A enlarged drawing of Fig. 1.
Detailed description of the invention
See Fig. 1 ~ 2, the utility model comprises double-row pile, is close to the local inner support 5 staying the soil body 4 and support double-row pile at the bottom of the hole of double-row pile.Stay the soil body 4 to be close to the bottom of double-row pile at the bottom of described hole, local inner support 5 is connected with the top of double-row pile.
Described double-row pile comprises front campshed 1.1, rear campshed 1.2, front campshed stake apical cap beam 2.1, rear campshed stake apical cap beam 2.2 and the crossbeam 3 being connected front campshed stake apical cap beam 2.1 and rear campshed stake apical cap beam 2.2.
Stay soil 4 to be close to front campshed 1.1 at the bottom of described hole, described local inner support 5 is connected with front campshed 1.1.
Local inner support 5 adopts section steel beam, steel tubular beam or reinforced concrete beam.
There is highly permeable layer when foundation ditch area distribution and be distributed with weak soil within the scope of rich groundwater or excavation of foundation pit soil layer, between the double soldier pile of the utility model (front campshed 1.1 and rear campshed 1.2), also cement mixing pile 6 can be set.Can also in conjunction with soil stabilization in cement soil continuous wall and hole.
Implementation step of the present utility model is: first at foundation ditch surrounding construction double-row pile, in foundation ditch, then carry out basin excavation (being namely close to the regional area reserved part soil body 4 of supporting and protection structure); Except staying the soil body 4 region, continuing other position soil body of excavation pit, until excavation is to predetermined foundation ditch ground absolute altitude, now owing to staying the advantageous effect of soil 4, the requirements such as distortion, stability and safety can be met without the need to arranging brace summer.Be excavated to after staying Tu Biaogaochu, and waist rail of constructing on double-row pile; The main body basement structure beyond the soil body 4 is stayed in construction, and between waist rail and the basement floor of corresponding absolute altitude, arrange local inner support 5; Due to the substitution effect of local inner support, now can excavate and stay soil 4; Main body basement structure in the middle part of construction foundation pit, after middle part basement goes out hole, utilizes the floor of built basement to arrange local inner support 5 as the strong point; Then remaining soils 4 is excavated, and this region basement of constructing, support replacement strip is progressively set with alternative local inner support simultaneously, finally completes the construction of whole main body basement structure.After basement construction is complete, then pit backfill operation can be carried out.
The utility model has the following advantages:
(1) large without supporting and space in foundation ditch: shoveling is convenient, basement structure construction is accessible.
(2) duration is saved: cut the earth fast, change support without the need to large area, basement structure construction is fast, conveniently organizes cross construction, saves the duration.
(3) overall economic efficiency is high: it is cheap that freight charges are dug in the earthwork, reduces large area and tears support expense open, save the duration, and building can be completed ahead of schedule and drop into construction, and overall economic efficiency is higher.
(4) green construction: reduce the secondary pollution of tearing open and supportting and bringing, meet the principle of green construction.
(5) basement structure less reserved constuction joint: in foundation ditch, large area is spacious, also without the need to arranging support post stake, can reduce the needs that main body basement reserves constuction joint, and can reduce base plate because wearing difficult the brought risk of leaking of column steel latticework waterproof.

Claims (6)

1. after staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles, it is characterized in that: comprise double-row pile, is close to the local inner support staying the soil body and support double-row pile at the bottom of the hole of double-row pile.
2. supporting and protection structure as claimed in claim 1, is characterized in that: stay the soil body to be close to the bottom of double-row pile at the bottom of described hole, and local inner support is connected with the top of double-row pile.
3. supporting and protection structure as claimed in claim 1 or 2, is characterized in that: described double-row pile comprises front campshed, rear campshed, front campshed stake apical cap beam, rear campshed stake apical cap beam and the crossbeam being connected front campshed stake apical cap beam and rear campshed stake apical cap beam.
4. supporting and protection structure as claimed in claim 3, it is characterized in that: stay soil to be close to front campshed at the bottom of described hole, described local inner support is connected with front campshed.
5. supporting and protection structure as claimed in claim 3, is characterized in that: be also provided with cement mixing pile between front campshed and rear campshed.
6. supporting and protection structure as claimed in claim 1 or 2, is characterized in that: local inner support adopts section steel beam, steel tubular beam or reinforced concrete beam.
CN201420544724.8U 2014-09-22 2014-09-22 After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles Active CN204098043U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104790409A (en) * 2015-04-24 2015-07-22 长沙理工大学 Method for adjusting friction force influence
CN104947682A (en) * 2015-05-06 2015-09-30 中国地质大学(武汉) Foundation pit support construction method and device thereof
CN105178329A (en) * 2015-08-08 2015-12-23 广州市设计院 Wall supporting type supporting structure and construction method of foundation pit underground continuous wall
CN106013172A (en) * 2016-07-01 2016-10-12 杭州江润科技有限公司 Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method
CN107842026A (en) * 2017-12-01 2018-03-27 深圳大学 The foundation pit supporting construction and method that a kind of horizontal ground-connecting-wall mixes with double-row pile
CN113136871A (en) * 2021-04-06 2021-07-20 中冶集团武汉勘察研究院有限公司 Permanently-adjacent combined retaining structure for foundation pit and side slope in limited space of sloping field and construction method
CN113684839A (en) * 2021-09-07 2021-11-23 中电建十一局工程有限公司 Excavation and support method for deep and narrow pipe trench under complex conditions

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104790409A (en) * 2015-04-24 2015-07-22 长沙理工大学 Method for adjusting friction force influence
CN104790409B (en) * 2015-04-24 2017-04-12 长沙理工大学 Method for adjusting friction force influence
CN104947682A (en) * 2015-05-06 2015-09-30 中国地质大学(武汉) Foundation pit support construction method and device thereof
CN105178329A (en) * 2015-08-08 2015-12-23 广州市设计院 Wall supporting type supporting structure and construction method of foundation pit underground continuous wall
CN106013172A (en) * 2016-07-01 2016-10-12 杭州江润科技有限公司 Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method
CN106013172B (en) * 2016-07-01 2018-02-27 新宇建设有限公司 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace
CN107842026A (en) * 2017-12-01 2018-03-27 深圳大学 The foundation pit supporting construction and method that a kind of horizontal ground-connecting-wall mixes with double-row pile
CN113136871A (en) * 2021-04-06 2021-07-20 中冶集团武汉勘察研究院有限公司 Permanently-adjacent combined retaining structure for foundation pit and side slope in limited space of sloping field and construction method
CN113684839A (en) * 2021-09-07 2021-11-23 中电建十一局工程有限公司 Excavation and support method for deep and narrow pipe trench under complex conditions
CN113684839B (en) * 2021-09-07 2022-09-16 中电建十一局工程有限公司 Excavation and support method for deep and narrow pipe trench under complex conditions

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