Methods for arranging friction grouped piles and determining bearing capacity of composite foundation

Abstract

The invention relates to methods for arranging friction grouped piles and determining the bearing capacity of a composite foundation, and belongs to the application field of the bearing capacity of building foundations and foundation reinforcement. The method for arranging friction grouped piles specially includes the steps that grouped piles under the same bearing platform are composed of a single internal pile at the center of a pile position and a plurality of external piles around the internal pile together, the external piles are successively and symmetrically arranged in a striking mode from the periphery of the center of the pile position to a design plane position, a regular hexagon is formed by successively connecting the axes of different external piles on the same pile position, the internal pile is arranged in a striking mode at the center of the pile position, and finally, the bearing body of the grouped piles composed of the internal and the external piles forms a sarciniform shape. The method for determining the bearing capacity of the composite foundation of friction grouped-pile arrangement includes the steps of 1, conducting site investigation and measuring the physical mechanical parameters of an original-state foundation soil layer; 2, determining the parameters of the pile arrangement; 3, determining the replacement rate of foundation soil bodies; 4, determining the compaction porosity of the foundation soil bodies; 5, determining the characteristic value of the resistance of pile sides; 6, determining the bearing capacity of the composite pile foundation.

Description

technical field [0001] The invention belongs to the application field of building foundation bearing capacity and foundation reinforcement, and in particular relates to a method for determining the bearing capacity of friction pile group arrangement and composite foundation bearing capacity. Background technique [0002] Since the 1980s, my country's reform and opening up has been comprehensively promoted, and the urbanization process has been accelerating. More and more large-scale facilities such as industrial and civil construction projects, municipal projects, and road and bridge projects need to be built. The improvement puts forward higher and higher requirements: it is necessary to reduce the project cost, ensure sustainable development to alleviate the deteriorating environmental problems, and prevent secondary disasters caused by the project. Among them, pile foundation, as an important foundation engineering and composite foundation reinforcement measure, is also wi...

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Problems solved by technology

Due to the limited selection of parameters in the table it

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