大板结构的强水平缝弱竖缝的抗震方法研究

本文结合本地区大板结构的工程实践对“强水平缝弱竖缝”的抗震方法进行了分析研究。本文利用变分原理提出了基于连续剪力介质的微分方程的方法，分析了弱竖缝大板结构的自由振动规律和特点。文中还利用里兹法推出用于估计基频的近似公式。最后，用ＳＡＰ程序完成了典型结构的地震反应计算，并提出一些建议。

STUDY ON ASEISMATICAL METHOD FOR STRONG HORIZONTAL JOINTS AND WEAK VERTICAL JOINTS OF LARGE PANEL STRUCTURES

In the light of the engineering practice in the large panel structures in north China, the analysis of the aseismatic method applied to the strong horizontal joints and the weak vertical joints is made. In this paper, by using the variation principle the differential equation method based on the hypothesis of the continuous shear medium of the vertical joints is presented, and the rule and the characteristic of the free vibration of the large panel structures of the weak vertical joints are analysed. The Principle of Energy is also utilized in this paper to derive the approximate formular for estimating the foundamental frequency. Finally, the SAP program is utilized to analyze the seismic response of the typical structures, and some suggestions are made.