摘要
本文在王汝梁分析方法的基础上 ,提出一种物理概念明确、简单实用而又保证其精确度的计算方法。在该方法中作某些简化便可退化到Newmark Hall或Kennedy方法上。本文还找到一个无量纲的物理量Θ ,它与管子与断层的夹角、断层的错距、管子的直径、壁厚和管土间的摩擦系数有关 ,其物理意义为管截面内轴向应变与弯曲应变的比值。当它在个范围内变化时 ,管中应变以弯曲应变为主 ,当它在另一个范围内变化时 ,管中应变以轴向应变为主。
An analysis method is proposed for the response of a buried pipeline due to earthquake fault movement in this paper based on the L.R.L's method.The Newmark-Hall method and Kennedy method can be regarded as the special cases of this method. A dimensionless parameterΘ is defined to represent the ratio of the axial strain to the bending strain in the pipe cross section, which is a function of the fault movement, cross angle of pipeline and fault plane, pipe diameter and thickness, soil friction angle. The calculating and analyzing results show that the axial strain plays a major role in pipeline response when the dimensionless parameterΘ varies in a range, and the bending strain plays a major role when the dimensionless parameterΘ varies in another range.
出处
《地震工程与工程振动》
CSCD
北大核心
2002年第2期22-27,共6页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助项目 ( 5 0 0 780 49)
