无锡地区软土桩基设计质量控制研究

发布时间：2018-07-06 08:41

本文选题：软土 + 桩基　；参考：《上海大学》2013年博士论文

【摘要】：桩基质量的好坏在于桩基的合理设计、准确计算、精心施工、科学检测。目前，人们对软土桩基的确切承载机理、承载性能等问题上看法不一，本文从无锡地区软土分布的实际出发，对软土桩基在设计质量控制方面的相关策略进行了研究，为软土地区桩基设计质量提供基础数据和科学依据。本文针对无锡地区典型区域的土样，采用了室内土工试验、标准贯入试验、静力触探试验等方法，获得了无锡地区地层岩性和物理力学性质，揭示了无锡地区第四纪土层的基本特性和构造类型。本文通过大量深孔钻探岩石试料的室内岩石试验结果总结出无锡地区的硬岩岩性，为无锡地区端承桩的桩尖设计深度提供设计依据。通过无锡地区软土桩基中的单桩承载力机理分析、桩身摩擦力分析和单桩竖向承载力的评判与取值原则分析，结合工程实例，提出了无锡地区软土桩基设计质量控制的基本策略、注意事项、遵循原则，，有针对性地指导无锡地区软土桩基设计质量控制，为无锡地区软土桩基工程中在软土地基条件下的基桩设计提供依据。
[Abstract]:The quality of pile foundation depends on the reasonable design, accurate calculation, careful construction and scientific inspection. At present, people have different views on the exact bearing mechanism and bearing capacity of soft soil pile foundation. Based on the actual distribution of soft soil in Wuxi area, this paper studies the design quality control strategy of soft soil pile foundation. It provides basic data and scientific basis for design quality of pile foundation in soft soil area. In this paper, according to the typical soil samples in Wuxi area, the methods of indoor geotechnical test, standard penetration test and static penetration test are used to obtain the lithology and physical and mechanical properties of the strata in Wuxi area. The basic characteristics and tectonic types of Quaternary soil layer in Wuxi area are revealed. This paper summarizes the hard rock lithology of Wuxi area through the results of laboratory rock tests of a large number of deep hole drilling rock samples, and provides the design basis for the design depth of pile tip of end bearing pile in Wuxi area. Through the analysis of the bearing capacity mechanism of single pile in soft soil pile foundation in Wuxi area, the friction analysis of pile body and the evaluation and value principle analysis of vertical bearing capacity of single pile, combined with the engineering example, the paper analyzes the bearing capacity of single pile in Wuxi area. The design quality control of soft soil pile foundation in Wuxi area is put forward. The design quality control of soft soil pile foundation in Wuxi area is guided by the basic strategy, matters needing attention, following principle and pertinently guiding the design quality control of soft soil pile foundation design in Wuxi area. It provides the basis for the foundation design of soft soil pile foundation engineering in Wuxi area.
【学位授予单位】：上海大学
【学位级别】：博士
【学位授予年份】：2013
【分类号】：TU447;TU473.1

【引证文献】