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膨胀土在我国广泛分布,工程中倘若遇到膨胀土,必将大大增大设计施工的难度以及维护的支出。膨胀土膨胀力大小是膨胀土造成工程危害的主要因素之一。目前对膨胀力的研究成果主要集中于土的物理指标的影响如土干密度、初始含水率、荷载对膨胀力膨胀量的影响的研究较多,对膨胀力时效性研究较少。本项目主要集中研究膨胀力随时间的变化规律及其对工程的影响。
Expansive soil is widely distributed in our country, if the project encountered expansive soil, will greatly increase the difficulty of design and construction and maintenance expenditures. The expansive soil expansive force is one of the main factors that cause the engineering damage of expansive soil. At present, the research results of swelling force mainly focus on the influence of soil physical indexes such as soil dry density, initial moisture content and load on the expansion of expansion force, but less on the expansibility of swelling force. This project mainly focuses on the law of expansive force with time and its impact on the project.