交通动荷载对基坑围护结构的影响分析

交通动荷载对基坑围护结构的影响分析 English Version

1. 浙江大学滨海和城市岩土工程研究中心,浙江杭州 310058; 2. 浙江大学软土与环境工程教育部重点实验室,浙江杭州 310058; 3. 杭州市城东新城建设投资公司,浙江杭州 310021; 4. 杭州市钱江新城建设开发公司,浙江杭州 310016

基金项目: 国家自然科学基金面上项目（51278449）

详细信息

1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China; 2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; 3. Hangzhou East New City Construction Investment Co., Ltd., Hangzhou 310021, China; 4. Hangzhou CBD Construction Development Co., Ltd., Hangzhou 310016, China

摘要: 城市建设的发展使基坑的周边环境越来越复杂,因此对相关设计工作提出了更高要求。通过一个工程实例,运用传统的半平面弹性地基梁设计法及三维有限单元模拟方法,详细分析了坑边（运土车）超载以及车辆冲击荷载对既有基坑围护结构内力的不利影响,并给出了基坑在复杂环境因素作用下垮塌后的加固方案,供今后工程借鉴。
- 基坑围护 /
- 交通荷载 /
- 超载 /
- 冲击荷载 /
- 加固
Abstract: Economic development and urbanization lead to more and more complexity of the surroundings of excavations, and higher requirements on the relevant design work are put forward. The risk of excavations in soft clay area is high and the design should be comprehensive. While in practice, the dynamic characteristics of vehicle loads are seldom calculated. The conventional half-plane method (beam on elastic foundation method) and three-dimensional finite element method are adopted to analyze the effects of vehicle loads on the retaining structure system of braced excavation. Moreover, the reinforcement scheme of excavations after collapse is given as references for similar projects.
- retaining structure of excavation /
- vehicle load /
- overload /
- impact load /
- reinforcement

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