摘要
弹性地基梁法中水平向基床系数沿深度的变化规律有多种不同的假定。本文从室内试验的角度分析了其在土中的变化规律,提出了一种基于室内试验参数的确定水平向基床系数沿深度变化规律的方法。该法考虑了深基坑开挖过程对水平向基床系数变化的影响,认为水平向基床系数可用土体的水平向应力应变关系曲线的初始切线模量算出,从而使水平向基床系数的取值能更好的反应工程实际情况。
In the method of beam on elastic foundation, there are various suppositions concerning the regular of changes about the coefficient of horizontal sub-grade reaction. In this paper, this regular of changes is analyzed in the light of laboratory tests and the method of getting the regular of changes about the coefficient based on parameters of laboratory tests has been raised. In this method, the effect of the course of the excavation to the coefficient has been taken into consideration and the coefficient can be got by the initial tangent modulus of the curve about stress-strain relationship. In this way, the coefficient of sub-grade reaction which is got by this method can be better used during the practical works.
出处
《电力勘测设计》
2004年第4期21-23,共3页
Electric Power Survey & Design
关键词
水平向基床系数
初始切线弹性模量
主、被动区
the coefficient of horizontal sub-grade reaction
the initial tangent elastic modulus
active and passive area
