Construction method for making ultra-long artificial excavating pile penetrate cave and ultra-long pile penetrating cave
A technology of manual hole-digging piles and construction methods, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., and can solve problems such as short construction time, long production time, and complex construction
Inactive Publication Date: 2011-05-18
THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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Problems solved by technology
[0006] The disadvantages are: the pre-production time is long, the construction time is short, and the cost is too high
[0010] Disadvantages: high cost, complex construction, long construction time
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[0044] Attached below Figure 1-2 The embodiment of the present invention is described in further detail:
[0045] A project example: Since part of the pile foundation is located in a karst cave, and the burial depth of the karst cave is about 35m, the pile length is designed to be 30-40m, and some piles will exceed 40m; in addition, due to the geological conditions of the site, some piles without karst caves are artificially dug. The length exceeds 35m. The construction of this part of manual excavation pile is difficult and dangerous. In order to ensure the construction safety and reliability of this part of artificially dug piles (karst caves and super-long piles), the super-long artificially dug piles of the present invention are specially adopted to pass through the karst cave construction method.
[0046] The construction steps are as follows:
[0047] Step 1: Leveling the site, laying out the wires, and fixing the pile positions;
[0048] Step 2: Excavate layer by l...
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The invention relates to a construction method for making an ultra-long artificial excavating pile penetrate a cave and an ultra-long pile penetrating the cave. The construction method comprises two steps of excavating a pile hole at the top of the cave and constructing a concrete protective wall on the part of the pile penetrating the cave, wherein the step of excavating the pile hole at the topof the cave is performed in sections layer by layer from top to bottom; the radius of a pile hole on the part of the pile penetrating the cave is enlarged compared with the prior design; an outer mold of the cave protective wall is a brick mold; and the protective wall is constructed in sections from bottom to top. Finally, steel reinforcement cages are hoisted and put, and concrete is poured. The construction method for making the artificial excavating pile penetrate the cave can effectively eliminate the influence of geological conditions on a construction site, and can effectively improve the strength of a pile body, reduce the construction difficulty, accelerate the construction, reduce the construction cost and ensure the construction safety.
Description
(1) Technical field [0001] The invention relates to a construction method of an artificial hole-digging pile, in particular to a construction method for an ultra-long artificial-excavation pile passing through a karst cave and an ultra-long pile passing through the karst cave. (2) Background technology [0002] For traditional artificially dug holes, the construction depth is generally controlled at about 20m, and the maximum depth can reach 40m. For super-long piles whose body length is more than 35m, the safety of the retaining wall is directly related to the construction safety of the artificially-dug piles because the length of the pile exceeds the general construction length. The thickness of miscellaneous fill is large, which makes the construction difficult and dangerous. However, there are no corresponding specific construction methods and regulations for super-long cast-in-situ piles in the existing construction manuals and specifications. Therefore, how to ensure ...
Claims
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IPC IPC(8): E02D5/38
Inventor 何穆郭木华左交明吴延宏王伟唐静赵研华张志华
Owner THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU