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Karst cave pile foundation construction method

A construction method and technology of karst caves, applied in the direction of foundation structure engineering, sheet pile walls, soil protection, etc., can solve problems such as difficulty in karst cave properties, affecting pile foundation quality, and grout leakage, so as to improve construction efficiency and improve pile foundation construction The effect of quality and firm structure

Inactive Publication Date: 2019-10-11
广东建邦兴业集团有限公司
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AI Technical Summary

Problems solved by technology

[0002] There are many karst caves in the karst area. During the construction of bridges and building pile foundations, the pile foundation passes through the hollow karst caves. Due to the lack of a force-transmitting layer in the karst caves, it is easy to cause problems such as skewing of the pile hammer and slurry leakage, which affects the construction quality.
At present, the filling method is usually used to block the karst caves, so as to avoid slurry or water leakage. However, it is difficult to accurately judge the properties of karst caves in strong karst areas. The construction methods of karst caves with different heights are different, and the filling volume is not easy to grasp. The backfilling volume is too large. The construction difficulty and cost are also high, and the amount of backfill is too small, which will reduce the stability of the plugging structure and easily affect the quality of the pile foundation

Method used

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  • Karst cave pile foundation construction method
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Embodiment Construction

[0022] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0024] I...

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Abstract

The invention discloses a karst cave pile foundation construction method. According to the karst cave pile foundation construction method, in the pile hole forming construction process, a karst cave top plate is broken through, the filling manner is adopted for blocking a karst cave, a drill hole can smoothly pass through the karst cave, in the filling process, the filler can be repeatedly impacted and backfilled until a protection wall is formed, karst cave mortar leakage is prevented, a baffle corresponding to the karst cave is arranged on a steel reinforcement cage, when the steel reinforcement cage is mounted, the steel reinforcement cage is fixed into a pile hole, meanwhile, the baffle can cover an opening of the karst cave, the filling protection wall and the baffle are matched to enable a karst cave blocking structure to be firmer, a large amount of filler does not need to be consumed, the phenomenon that during pile foundation filling, concrete enters the karst cave can be avoided, and the construction efficiency and the pile foundation construction quality can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction method for karst cave pile foundations. Background technique [0002] There are many karst caves in the karst area. During the construction of bridges and building pile foundations, the pile foundation passes through the hollow karst caves. Due to the lack of a force-transmitting layer in the karst caves, it is easy to cause problems such as skewing of the pile hammer and slurry leakage, which affects the construction quality. . At present, the filling method is usually used to block the karst caves, so as to avoid slurry or water leakage. However, it is difficult to accurately judge the properties of karst caves in strong karst areas. The construction methods of karst caves with different heights are different, and the filling volume is not easy to grasp. The backfilling volume is too large. The construction difficulty and cost are also high, and...

Claims

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Application Information

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IPC IPC(8): E02D27/12E02D5/34E02D3/00E02D3/12
CPCE02D3/00E02D3/12E02D5/34E02D27/12
Inventor 贾育源刘重新吴庭佳李文辉陆海明钟春华黄俊威王庆胡东吉梁业洪
Owner 广东建邦兴业集团有限公司
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