摘要
侧向基床反力系数Kh是水平受荷桩、基坑围护和隧道支护设计的一个重要参数。从扁铲侧胀仪的工作机理出发,推导出侧向基床反力系数的计算公式,并考虑了基础宽度、加荷速率、基础形状及刚柔性等因素的影响。利用上海地区的扁铲侧胀试验资料,按本文公式进行计算,结果与规范推荐值相当接近。
The horizontal coefficient of subgrade reaction,Kh, plays a significant role in problems dealing with laterally or loaded piles, excavation and tunnel engineering. The calculation formula for the horizontal coefficient of subgrade reaction is derived from the principle of the flat dilatometer test. And the influence factors of Kh, such as the width and shape of foundation, the rigidity and plexibility of the foundation and the rate of loading are considered respectively.then,the values of Kh are obtained from the calculation formula according to the data of insitu DMT in Shanghai,and the calculated values of Kh are almost equal to those suggested in the code.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2003年第6期692-696,共5页
Chinese Journal of Geotechnical Engineering
关键词
侧向基床反力系数
扁铲侧胀试验
桩
基坑围护
隧道
horizontal coefficient of subgrade reaction
flat dilatometer test(DMT)
material index