Computing method for pressure of cement soil mixed material replacement cushion

Abstract

The invention discloses a computing method for pressure of a cement soil mixed material replacement cushion. The method comprises a cushion layer, a first pressure box, and a second pressure box. The first pressure box and the second pressure box are respectively arranged on two ends of the cushion layer. Compared with lime soil whose mechanical characteristic is similar to a cement soil mixed material, the cement soil mixed material has relatively higher foundation capability. At present, in practical engineering, a standard value of maximum foundation soil bearing capacity of 1:9 cement soil is 230 kPa, and the bearing capacity is amount to 3:7 lime soil level. The cement soil mixed material has good stress diffusion ability, and the stress diffusion ability is little influenced by replacement thickness, and the cement soil mixed material has relatively low requirement on substratum foundation soil bearing capacity.

Description

technical field [0001] The invention relates to the technical field of calculation methods, in particular to a calculation method for cushion layer replacement pressure with cement-soil mixture materials. Background technique [0002] According to the existing construction industry standard "Technical Specifications for Construction Foundation Treatment" (JGJ79-2012): the replacement cushion can be divided into soil, stone cushion and geosynthetic reinforced cushion according to the replacement material; the cushion material can be Sand and gravel, lime soil, fly ash, slag, other industrial waste and geosynthetic materials are used to reinforce the cushion. [0003] The sand and gravel cushion has a good ability to improve the bearing capacity of the foundation, and the main material of the sand and gravel cushion comes from sand excavation, mountain digging, etc., which seriously damages the environment, is greatly affected by relevant policies, and has obvious regional cha...

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Problems solved by technology

[0005] The lime-soil cushion has good waterproof performance, but its ability to increase the bearing capacity is greatly affected by the proportion of slaked lime mixed in, and the proportion of slaked lime mixed in also determines the cost of the project; and the degree of slaked lime slaking is not easily controlled to cause swelling and cracking and other engineering quality issues

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