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本文结合贵阳市筑城广场旁某地块安置房工程,在地勘报告及当地工程经验的参考下,确定基坑红粘土土体的抗剪强度指标,利用有限元软件数值模拟实际基坑支护条件,分析探明支护结构位移和地表沉降与支护桩不同桩长、桩径、桩距之间的关系,优化设计方案,最后就设计方案与实测数据进行了对比研究。研究成果为西部红粘土地区同类工程的设计和施工提供了科学依据,对同类工程有借鉴意义。
In this paper, with the reference to the geological survey report and local engineering experience, the shear strength index of the red clay soil in the foundation pit is determined according to the project of resettlement housing in a block beside the city building of Guiyang. The actual excavation support is numerically simulated by finite element software Conditions, analyzes the relationship between the displacement of support structure and surface settlement and different pile length, pile diameter and pile spacing of support pile, and optimizes the design scheme. Finally, the comparison between the design scheme and the measured data is made. The research results provide a scientific basis for the design and construction of similar projects in the western red clay area and have reference significance for similar projects.