Rigid connecting structure of tubular pile and cushion cap

Abstract

The invention discloses a rigid connecting structure of a tubular pile and a cushion cap and belongs to the field of construction engineering piles. The technical scheme is as follows: a pile block ofthe tubular pile stretches into the lower part of an upper longitudinal reinforcing steel bar of the cushion cap, a layer board is placed in the tubular pile and core concrete is poured into a spacewithin the tube above the layer board, a cone-shaped ring tube is arranged in a position outside a stretching section, stretching into the cushion cap, of the tubular pile in a sleeving manner and thecone-shaped ring tube comprises a ring tube body, a ring tube underframe and a plurality of rib plates. The ring tube underframe is annular and is located at the bottom of the ring tube body. The inner ring diameter of the ring tube underframe is equal to that of the ring tube body. The rib plates are triangular steel plates, and two sides of the rib plates are welded and fixed to the ring tube body and the ring tube underframe, separately. The rib plates are arranged in a spaced manner in the circumferential direction of the ring tube body. A bottom longitudinal reinforcing steel bar of thecushion cap and the ring rube underframe are welded and fixed. The upper part of the ring tube body and a pile block end plate of the tubular pile are welded and fixed. The invention relates to the rigid connecting structure which is simple in principle, reliable in quality and convenient for plant prefabrication and can achieve fixed connecting constraint of the pile block and the cushion cap.

Description

technical field [0001] The invention belongs to the field of construction engineering pile foundations, in particular to a connection structure between pipe piles and caps, which can be widely used in pile foundations for buildings bearing horizontal loads. Background technique [0002] With the rapid development of my country's civil engineering field, the situation of pile foundations subjected to horizontal loads has been paid more and more attention by engineers and technicians in the construction of urban high-rise buildings, port terminals, and earthquake resistance. Pipe piles are widely used in the above-mentioned foundation projects because of their high single pile bearing capacity, fast construction speed, and reliable quality. In the pile foundation specification, the pile top node constraints need to be considered in the calculation of pile foundation horizontal bearing capacity and displacement, so as to determine the maximum bending moment coefficient and hori...

AI Technical Summary

Problems solved by technology

However, due to the complexity of on-site construction and the differences in operating levels, it is difficult to guarantee the actual constraints, and the calculation is usually based on the joints

Due to the large difference in the value of the horizontal displacement coefficient of the pile top between the fixed connection and the hinged connection in the code (respectively 2.441 and 0.940), it is easy to cause problems such as overly conservative design and waste of resources

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