Method for constructing pile foundation in karst cave geological environment and pile hole integrated retaining wall
A technology of geological environment and construction piles, applied in sheet pile walls, foundation structure engineering, buildings, etc., can solve the problems of high construction costs, achieve the effects of reducing construction difficulty, reducing usage, and reducing inconvenient transportation
Inactive Publication Date: 2021-07-23
SHANGHAI NO 4 CONSTR
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a method for constructing pile foundations in karst cave geological environment and pile-hole integrated retaining wall to solve the high problem of construction cost
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[0028] The present invention is described in detail below in conjunction with accompanying drawing:
[0029] Please refer to Figure 1 to Figure 3 , an embodiment of the present invention provides a method for constructing a pile foundation in a karst cave geological environment, which may include the following steps:
[0030] Step 310, measure the depth position and range of the cave 210 in the geological environment 200 according to the advanced drilling.
[0031] In step 320, hole-forming construction is carried out in the geological environment 200, and the depth position and range of the karst cave 210 are remeasured.
[0032] Step 330, according to the depth position of the karst cave 210 in the geological environment 200, the pile hole integrated retaining wall is set on the outer contour surface of the steel cage 110; the height dimension of the pile hole integrated retaining wall is greater than the height dimension of the karst cave 210, and the pile hole The integ...
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The invention discloses a method for constructing a pile foundation in a karst cave geological environment and a pile hole integrated retaining wall. The method for constructing the pile foundation in the karst cave geological environment comprises the steps that the depth position and range of a karst cave in the geological environment are measured according to an advance drill; pore-forming construction is carried out in the geological environment, and the depth position and range of the karst cave are re-measured; a pile hole integrated protection wall is arranged on the outer contour face of a reinforcement cage according to the depth position of the karst cave in the geological environment, wherein the height size of the pile hole integrated protection wall is larger than that of the karst cave, and the pile hole integrated protection wall comprises a net frame arranged around the outer contour face of the reinforcement cage and a closing-up net arranged between the reinforcement cage and the net frame in a surrounding mode; the reinforcement cage is hoisted into a hole, so that the pile hole integrated protection wall covers the depth area of the karst cave; and concrete is poured in the reinforcement cage through a guiding pipe to form the pile foundation. According to the method for constructing the pile foundation in the karst cave geological environment, the construction cost and the construction difficulty can be reduced.
Description
technical field [0001] The invention relates to the field of construction engineering, in particular to a method for constructing a pile foundation in a karst cave geological environment and a pile-hole integrated retaining wall. Background technique [0002] When constructing pile foundations in the karst cave geological environment, when the pile foundation is constructed to the karst cave, if it is not handled properly, problems such as grout leakage, hole collapse, partial hole, stuck hammer, buried drill and other problems and quality problems during pouring will easily occur. At present, in the construction of pile foundation projects in the karst cave geological environment, steel casings are often used as the retaining wall to penetrate the karst cave construction to meet the quality requirements of the pile foundation. For the geological environment with a large number of karst caves, a large amount of steel casings can be used, and its shortcoming is that the cost ...
Claims
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IPC IPC(8): E02D5/34E02D15/04
CPCE02D5/34E02D15/04
Inventor 韦世春钟前煌麦俊贤刘文杰
Owner SHANGHAI NO 4 CONSTR