Densely arranged step-shaped revolving digging cast-in-place bored pile supporting and protecting system and construction method

Abstract

The invention discloses a densely arranged step-shaped revolving digging cast-in-place bored pile supporting and protecting system. A continuous wall and reinforced piles are included; the continuouswall is installed in a hole groove broken through by a rotary drilling rig; the reinforced piles are arranged in hole grooves, on the front side of the continuous wall, broken through by the rotary drilling rig; and the plane where the reinforced piles arranged in parallel are located is parallel with the plane where the continuous wall is located. Due to the fact that different pile sections areadopted, the beneficial effects that concrete pouring is dense and connection seams are firm are achieved, the densely arranged step-shaped revolving digging cast-in-place bored pile supporting and protecting system is clear in construction step, ingenious in structural design and good in application prospect, the manufacturing cost of a revolving digging cast-in-place bored pile can also be reduced, safety of the supporting and protecting system is guaranteed, and the manufacturing cost is also saved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a support system and a construction method of densely packed stepped rotary-dig piles. Background technique [0002] In the process of urban construction, with more and more functions in the basement of the building, the depth of the basement is getting deeper and deeper, which causes the depth of the foundation pit of the basement to become deeper and deeper. For large-scale deep foundation pit projects, underground diaphragm walls are often used for deep Foundation pit support. [0003] At present, the commonly used deep foundation pit diaphragm wall construction method is punching and filling machine construction, that is, the punching machine is used to excavate the underground soil to form holes, and concrete is poured into the holes formed by the punching machine to form a punching pile diaphragm wall. This construction method has good work efficiency. , is widely used...

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used underground diaphragm wall of rotary excavation piles also has certain problems. Since the diaphragm wall of rotary excavation piles needs to be poured in sections, the current technology is still relatively deficient in the treatment of each segment of the diaphragm wall of rotary excavation piles. During overlapping pouring, problems such as poor concrete pouring and weak joints are prone to occur, and the construction process needs to be improved

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