Method for excavating and breaking middle part of defective cast-in-place pile
A cast-in-place pile and defect technology, applied in sheet pile walls, construction, work accessories, etc., can solve problems such as reducing work efficiency, and achieve the effects of improving work efficiency, improving accuracy, and improving the scope of use
Pending Publication Date: 2022-05-31
陈政杰
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Problems solved by technology
[0005] The object of the present invention is to provide a method for excavating the middle part of the defective cast-in-situ pile, aiming at solving the above-mentioned background technology. The positioning plate needs to be redesigned during the construction of defective columns with large diameters, which reduces the problem of work efficiency. Before the middle excavation of the defective cast-in-situ piles, the positioning nails set by the positioning mechanism are beneficial to improve the positioning accuracy, so that the turning The center of the pie is concentric with the center of the defective cast-in-place pile
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[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0041] The same or similar numbers in the drawings of this embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of d...
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The invention relates to the technical field of building construction, and discloses a method for excavating and breaking the middle of a defective cast-in-place pile. Comprising the following construction steps that S1, a drilling positioning machine is moved to the position above the defective cast-in-place pile, and the drilling positioning machine is fixed; s2, a positioning mechanism is started, and the drilling position is determined according to the diameter of the defective cast-in-place pile; s3, a drilling mechanism is started, water mill drilling is conducted, and a through annular space is formed through communication; s4, a detection core-pulling hole is reserved in a concrete column in the middle of the defective cast-in-place pile, and a plurality of drill holes are additionally formed through a pneumatic hammer machine; s5, a hammer head and a steel wedge are arranged in the outer ring water mill drill hole, so that the concrete column is separated from the concrete body of the pile body; s6, the block concrete is hoisted out of the hole through a winch and a hoisting hopper; s7, after concrete of the pile body of the defective pile on the top layer is chiseled away, construction of the next layer is conducted; and S8, repeating the step of breaking the middle concrete column after the water milling and drilling occlusion annular coring until the defect position is excavated.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a method for excavating and breaking the middle of a defective cast-in-place pile. Background technique [0002] In the process of pouring into piles in pile foundation engineering, due to the influence of complex stratum conditions, improper process operation or abnormal concrete materials, there will be defective cast-in-place piles with substandard quality. It is necessary to use the existing defective cast-in-place pile water mill drill "pile-in-pile" construction method to deal with the defective column. The inner and outer protective layer concrete of the steel cage with the thickness is used as the protective wall during excavation. The concrete is taken out in layers and blocks until the defect is located. After the defect is processed, the steel cage is re-bound in the pile hole and concrete is poured into the pile. [0003] In the existing defective cast...
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Login to View More IPC IPC(8): E02D9/00B28D1/14B28D7/00
CPCE02D9/00B28D1/14B28D1/146B28D7/00
Inventor 陈政杰
Owner 陈政杰