Self-balancing foundation pit enclosure structure and construction method thereof
A foundation pit enclosure and construction method technology, which is applied in infrastructure engineering, excavation, construction, etc., can solve the problems of waste of resources and costs, and achieve the effects of reducing engineering costs, reducing the difficulty of excavation, and increasing construction speed
Inactive Publication Date: 2017-05-03
张继红
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Problems solved by technology
The above-mentioned enclosure structures are all non-recyclable structures, which is a great waste of resources and costs for foundation pit projects that are no longer needed after backfilling
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[0060] As the present invention such as figure 1 The main purpose of the first embodiment shown is to introduce the structure, working principle and construction method of a self-balancing foundation pit enclosure structure of the present invention. The self-balancing foundation pit enclosure structure includes five parts: a soil-retaining and water-stop structure (1), a pile row (2), a pile row top plate (3), an overload box (4) and an overload soil body (5). Such as figure 1 As shown, the soil-retaining and water-stopping structure (1) is a structure that prevents water and soil outside the pit from entering the foundation pit during the excavation of the foundation pit. The row of piles (2) is a pile with a certain rigidity and strength inserted into the soil. (3) To connect the soil retaining and water-stopping structure (1) and the row of piles (2) into a structure of a common force-bearing body and a structure capable of bearing the weight of the overloaded soil (5) on ...
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The invention relates to the field of foundation pit engineering and relates to a self-balancing foundation pit enclosure structure and a construction method thereof. The self-balancing foundation pit enclosure structure comprises five parts including a soil and water retaining structure (1), row piles (2), a row pile top plate (3), overloading boxes (4) and an overloading soil body (5); antidumping and antisliding bearing capacities of a multi-row-pile support system are added by utilizing the gravity of the overloading soil body (5). The invention also provides an assembly type enclosing purlin and a mounting and disassembling construction method thereof. The assembly type enclosing purlin comprises assembly bushings (7) and a filling material (15); and the purpose of recycling after backfill of a foundation pit is realized. According to the self-balancing foundation pit enclosure structure, double row pile enclosures are adopted along the periphery of the foundation pit, a trench foundation pit enclosed by double row piles at the periphery of the foundation pit is excavated firstly, an underground structure in a trench is constructed, and enclosure piles at the outer row are supported, so that no support enclosure of a deep foundation pit is realized; and the self-balancing foundation pit enclosure structure greatly lowers the foundation pit enclosure cost and construction period, can be recycled after the backfill of the foundation pit and has good environmental protection benefit.
Description
technical field [0001] The invention relates to the field of foundation pit protection engineering in the field of geotechnical engineering. Background technique [0002] Cement-soil gravity dam foundation pit enclosure structure is a commonly used enclosure type suitable for not too deep foundation pits in the field of foundation pit enclosure engineering. The advantage of gravity foundation pit enclosure type is that there is no internal support structure , It is convenient to excavate and the construction period is short. However, the cost of the existing gravity-type foundation pit enclosure structure is relatively high, and the applicable excavation depth of the foundation pit generally does not exceed 5-6m. After the foundation pit is backfilled, the enclosure structure cannot be recycled, and permanent solid residues will be formed in the soil. It will affect the geotechnical engineering environment and the later development of underground space. In the prior art, f...
Claims
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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 张继红
Owner 张继红