Method for improving compression resistance bearing capacity of concrete prefabricated hollow pile

Abstract

The invention discloses a method for improving the compression resistance bearing capacity of a concrete prefabricated hollow pile. In a static test of the concrete prefabricated hollow pile, the method can be used for improving the bearing capacity of the concrete prefabricated hollow pile when the vertical ultimate bearing capacity of a single pile can not meet the maximum loaded capacity of a test pile. The influence of a filling core is not taken into account in the design of the concrete prefabricated hollow pile, and the bearing capacity of a pile body meets actual design requirements; the influence of the filling core is taken into account in the process of static load detection, the bearing capacity of the pile body meets the requirement for the maximum loaded capacity, and the designed value of the compression resistance bearing capacity of the concrete prefabricated hollow pile is determined and appropriately improved conveniently according to the detection result; in addition, the length of the filling core is determined according to the detected maximum loaded capacity of the pile body and pile side resistance. The method for improving the compression resistance bearing capacity of the concrete prefabricated hollow pile is suitable for the situation that the compression resistance bearing capacity of the pile body is insufficient when the vertical ultimate bearing capacity of the single pile of the concrete prefabricated hollow pile is determined in the static test, is simple, is easy to implement, is effective, can appropriately improve the characteristic value of the bearing capacity of the single pile according to the detected vertical ultimate bearing capacity of the single pile, and saves construction cost.

Description

technical field [0001] The invention relates to a method for improving the compressive bearing capacity of concrete prefabricated hollow piles, which is suitable for the field of building structure design. Background technique [0002] Pile foundations commonly used in high-rise buildings generally adopt two types of concrete prefabricated piles and cast-in-situ piles. Prefabricated piles can be divided into prefabricated hollow piles (including hollow pipe piles and hollow square piles) and prefabricated solid piles. Because prefabricated hollow piles have obvious advantages over prefabricated solid piles in terms of concrete and steel consumption and production speed, [0003] Therefore, on the premise that there are no special requirements and the design requirements are met, prefabricated hollow piles are always preferred when selecting prefabricated piles. Compared with cast-in-situ piles, prefabricated hollow piles have the following advantages: (1) high bearing capac...

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Problems solved by technology

[0004] Technical problem: The technical problem to be solved by the present invention is to provide a method for improving the compressive bearing capacity of concrete prefabricated hollow piles, and to solve the problem of insufficient compressive bearing capacity of concrete prefabricated hollow piles during pile foundation detection

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