Combined prefabricated retaining wall square pile foundation pit supporting structure and construction method thereof
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A technology of supporting structure and construction method, which is applied in basic structure engineering, excavation, sheet pile wall, etc., can solve problems such as waste of resources, waste of land, noise pollution, etc., to save project cost, expand use area, and improve stability. Effect
Pending Publication Date: 2021-08-31
ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE
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[0004] First, the foundation pit support is generally a temporary structure, and a certain distance needs to be withdrawn to meet the construction of the side wall of the basement 1, thus causing waste of land, reducing the area of the basement 1, and increasing the excavation and filling costs of the fertilizer tank
[0005] Second, most of the existing foundation pit support construction is carried out on-site concrete pouring, which will cause many common problems of concrete pouring on site, and corresponding inspections need to be completed, thus causing waste of resources and delaying the construction period
[00
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[0076] Example one
[0077] like Figure 1 to 8 , The present invention is a composition disclosed prefabricated construction method Wall side pit pile supporting structure, comprising:
[0078] Step S1, the construction site for the leveled foundation, and move out of the influence of foundation construction line;
[0079] Step S2, the plural sets of stirring construction site construction pile 1 to be connected to the construction pit is formed around the annulus of the mixing pile 1-1; and, in said mixing pile 1 vertically inserted precast piles 2, to form the endless belt pile along stirred prefabricated pile annulus extending 1-1 2-1;
[0080] Wherein, before mixing pile 1 to be a hole with soil cement slurry mixed into the gel initial setting, the prefabricated pile 2 is inserted into the corresponding, prefabricated pile 2 so as difficult to insert a prefabricated pile or pile stirred 2 is not fixed solid, stirred for 1 time with piles prefabricated pile insertion time inter...
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[0093] Example 2
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[0094] On the basis of the above-described first embodiment, this second embodiment also adopts the following preferred embodiments:
[0095] The prefabricated pile annulus 2-1, 2-2 precast piles subbands, 3 micro-expansion concrete, steel connecting member 4, the connection between the steel plug 7 and the auxiliary member 5 is connected with the steel member, preferably the following three one of the program:
[0096] Option One, see Figures 2 to 6 The prefabricated pile 2 has a rectangular cross section, divided into precast pile-slot 2A and 2B Single precast piles, the precast pile 2A-slot symmetrically at opposite sides is provided with two axially extending along the row of double groove 2A1, the precast pile 2B single symmetrically at opposite sides thereof along the sides provided with a separate axially extending groove 2B1;
[0097] Furthermore, with the dual-slot 2A precast piles composed of the prefabricated pile annulus 2-1, employing the single slot 2B precast piles ...
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Abstract
The invention discloses a combined prefabricated retaining wall square pile foundation pit supporting structure and a construction method thereof. A stirring pile, a prefabricated pile, a connecting steel component, an externally-hung steel component and micro-expansion concrete are constructed to form a water-stopping and soil-retaining integrated underground retaining wall, so that supporting stability is provided for a foundation pit, and the foundation pit can be quickly and safely excavated within the enclosure range of the underground retaining wall; and in addition, an externally-hung part of the externally-hung steel component is used for being externally hung on a lining wall of a basement, a fertilizer groove needed by the lining wall of the basement during conventional construction can be omitted, excavation and filling of the foundation pit are reduced, the using area of the basement is enlarged, lining wall embedded steel bars of the basement can be reduced or even omitted, the underground retaining wall can serve as a permanent structure and does not need to be disassembled, the underground retaining wall can also serve as an outer wall of the basement in the construction stage and the using stage, and the construction cost is remarkably reduced. The combined prefabricated retaining wall square pile foundation pit supporting structure and the construction method thereof have the advantages of being safe, short in construction period and low in construction cost.
Description
technical field [0001] The invention relates to foundation pit support, in particular to a combined prefabricated retaining wall square pile foundation pit support structure and a construction method thereof. Background technique [0002] The foundation pit support is to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, and the support, reinforcement and protection measures adopted for the side wall of the foundation pit and the surrounding environment. In the conventional foundation pit support form, the vertical support components mainly include row pile support, ground connection wall, pipe pile, grading and engineering pile; the horizontal support components include concrete support, steel support, anchor cable 6 and soil nails. Wait. One or more support forms can be selected for a foundation pit support form. During foundation pit excavation, groundwater control is also a part of foundation pit support. ...
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IPC IPC(8): E02D17/04E02D5/46E02D5/30
CPCE02D17/04E02D5/46E02D5/30
Inventor 陈星张小良钟佰林陈有德张镇国彭俊陈香波黄俊光郑启勇郭达文龚伟骢黄佳林毛永平
Owner ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE
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