论文部分内容阅读
码头岸坡及基坑开挖卸荷后会改变地基的受力状态,从而对土工设计参数产生明显的影响。近些年来,国际上对土的基本特性,特别是应力历史及结构性对土特性的影响,进行了大量的研究工作。本文将主要阐述正常压密地基开挖卸荷后土的不排水抗剪强度及静止侧压力系数的变化规律,以及开挖前、开挖后参数变化的预估方法,并以实例说明此法的适用范围。
The quayside and pit unloading excavation will change the stress state of the foundation, which will have a significant impact on the geotechnical design parameters. In recent years, a great deal of research work has been done on the basic characteristics of soil, especially the influence of stress history and structure on soil properties. This article mainly expounds the law of undrained shear strength of soil and static pressure coefficient after excavation and unloading of normal compaction foundation, as well as the prediction method of the change of parameters before excavation and after excavation. An example is given to illustrate this method The scope of application.