Assembly type foundation pit bracing structure and construction method thereof
A foundation pit enclosure and assembly technology, which is applied in the direction of 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: 2016-05-04
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
Method used
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[0041] As the present invention such as figure 1 The main purpose of the shown first embodiment is to introduce the structure, working principle and construction method of a supergravity dam foundation pit enclosure structure of the present invention. The supergravity dam 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 mass (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)...
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The invention relates to an assembly type foundation pit bracing structure in the foundation pit engineering field, and a construction method thereof. The assembly type foundation pit bracing structure comprises an earth-retaining and waterproof structure (1), piles in a row (2), a top plate (3) for the piles in a row, an overload box (4) and an overload earth body (5), wherein anti-dumping and anti-sliding carrying capacity of a bracing structure with piles in multiple rows is increased by utilizing gravity of the overload earth body (5). The invention further discloses an assembly type bracing purlin and a mounting and dismounting construction method thereof. The assembly type bracing purlin comprises an assembly sleeve (7), wherein the earth-retaining structure or one part of the earth-retaining structure is firmly connected to the bracing purlin by virtue of the assembly sleeve (7) and a filling material (15) filled in the assembly sleeve (7); after foundation pit backfilling, the connection between the assembly sleeve (7) and the earth-retaining structure is relieved by means of cutting, hot-melting and the like, so that the recycling purpose is achieved. The assembly type foundation pit bracing structure greatly reduces the foundation pit bracing cost and the construction period, can be recycled after foundation pit backfilling, and is good in environmental protection effect.
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