竖井结构抗爆动效分析

本文对齐地表的竖井结构.在地表受到冲击波作用时的动力响应分析.提供了一种解析的方法。弹性抗力按照文克尔假设来计算.问题归结为有限长的、受到移动的面力荷载及弹性抗力、具有依赖于时间的边界条件的中厚圆柱壳的强迫振动。数值例子中,与不考虑弹性抗力共同作用的结果进行了比较。

CALCULATION OF THE DYNAMIC RESPONSE OF BLAST-RESISTANT SHAFT STRUCTURE

In this paper, an analytical method is presented for calculation of the dy- namic response of shaft structure subjected to shock waves. The upper end of the shaft is on the level of ground. The problem is then reduced to studying the forced vibration of an finite, moderatethick circular cylindrical shell, sub- jected to moving surface load, medium resistance as well as time-dependent bo- undary conditions. The resistance is calculated by Winkler theory. The genera- lized coordinates are obtained by Duhamel's integral. In numerical examples, the results are compared with the results without taking account of interaction.