Joint of raft foundation and pile foundation tie

Abstract

The invention relates to a joint of a raft foundation and a pile foundation tie. Bottom Y-shaped support pieces are welded to the four positions which are uniformly divided at the bottom of a cylinderbase, the cylinder base is sleeved with a cylinder bearing platform square seat and the cylinder base and the cylinder bearing platform square seat are fixed, and top Y-shaped support pieces are uniformly distributed in the positions of the four corners of the top of the cylinder bearing platform square seat; small-diameter steel rings are welded to the outer edges of the four bottom Y-shaped support pieces, and large-diameter steel rings are welded to the outer edges of the four top Y-shaped support pieces; according to the joint of the raft foundation and the pile foundation tie, the small-diameter steel rings take the bottom Y-shaped support pieces as the framework, and steel wire gauze is fully distributed; rebar support frames are welded to the top of the cylinder base in a mirror symmetry manner, by the aid of the technical scheme that the rebar support frames and a poured raft foundation reinforcement cage are bound or welded together, the problem that concrete leaks in pile foundation pipe holes is solved at one time, the pull knot problem of the pile foundation and the raft foundation is solved, and the problem that the pile opening is not flat after pile cutting is solved.

Description

technical field [0001] The invention relates to a joint between raft foundation and pile foundation pouring. Background technique [0002] A deep foundation (see figure) consisting of a pile and a pile cap connected to the top of the pile (referred to as the cap) or a single pile foundation connected by a column and a pile foundation, referred to as a pile foundation. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation. Construction pile foundations are usually low cap pile foundations. The low cap pile foundation is generally set at the bottom of the raft foundation. Since the height of the pile driven may not meet the design requirements, it is generally necessary to cut the pile when pouring the raft foundation, and the top surface of...

AI Technical Summary

Problems solved by technology

Since the height of the pile driven may not meet the design requirements, it is generally necessary to cut the pile when pouring the raft foundation, and the top surface of the pipe pile after the pile is often uneven, so it is necessary to deal with the joints between the pile foundation and the raft foundation It is more troublesome. At present, the usual method is to directly place a steel cage, and then pour concrete to seal the pile hole. However, this kind of sealing often causes a large amount of concrete to leak into the pile hole, resulting in waste of materials, and the inserted steel bars The cage does not actually have any overlap with the raft foundation, so its strength is questionable

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