Construction method for vibrating sunken tube construction secant pile wall

Abstract

The invention discloses a construction method for a vibrating sunken tube construction secant pile wall, and belongs to the technical field of construction. The construction method comprises the construction steps: construction preparation, pile position measuring and unreeling, construction of a guide wall, vibrating and sinking casing pipes in position by using a vibrating sunken tube pile machine, construction of a first plain concrete pile, earth taking through an in-position rotary drilling rig, concrete pouring and casing pipe removing, construction of a second plain concrete pile, construction of a third plain concrete pile, construction of a first steel reinforcement cage concrete pile, construction of a second steel reinforcement cage concrete pile and the like. The steps are repeated in sequence until the completion of the secant pile walls. The construction method is fast in construction speed, the construction time of a single pile is about six hours, construction efficiency is improved, the casing pipes are pressed down and pulled off by using a vibration mode, a vibration function is performed on concrete poured underwater, the situation that the steel reinforcement cage floats upward is effectively controlled, the concrete is denser and solider, the quality of a pile body is higher, and the method is suitable for bracing engineering of foundation pits in suburbs, and is particularly suitable for the construction of the secant pile wall of the soil layer of silt, clay and sludge.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method of an occlusal pile constructed by vibration sinking tube construction with high construction speed and high pile body quality. Background technique [0002] At present, many occlusal piles are constructed in the form of one steel and one element. The traditional occlusal piles are constructed by domestic twisting pipe drilling rigs. Due to the small torque of the equipment and other reasons, the casing lead is only 2-3m. In silt formations and silt formations In strata rich in groundwater, there will be "piping", that is, the soil and quicksand outside the pipe enter the pipe through the bottom of the pipe, and the groundwater will also flow into the hole, so the construction is very difficult, and the soil inside the pipe will rise. The construction speed is faster than the construction of soil extraction and the water volume in t...

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Problems solved by technology

[0002] At present, many occlusal piles are constructed in the form of one steel and one element. The traditional occlusal piles are constructed by domestic twisting pipe drilling rigs. Due to the small torque of the equipment and other reasons, the casing lead is only 2-3m. In silt formations and silt formations In strata rich in groundwater, there will be "piping", that is, the soil and quicksand outside the pipe enter the pipe through the bottom of the pipe, and the groundwater will also flow into the hole, so the construction is very difficult, and the soil inside the pipe will rise. The construction speed is faster than the construction of soil extraction and the water in the hole is too large to be drained, so the soil extraction cannot be carried out by flushing and grasping, the construction speed is slow and the efficiency is low

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