单质点弹性体系建筑结构的爆破地震动力响应分析研究

目前爆破地震效应研究主要集中在爆破地震波在岩土介质的传播规律和爆破振动实测数据的经验公式回归分析等方面的研究,而对爆破地震作用下的建筑结构的动力响应研究很少.建筑结构的爆破地震动力响应分析属于结构动力学的范畴.这里运用结构动力学理论,对单质点弹性体系建筑结构的爆破地震动力响应进行了研究,建立了单质点弹性体系建筑结构的爆破地震运动方程,并导出了单质点弹性体系建筑结构的爆破地震运动方程的解,最后给出了反应谱法求解爆破地震作用力的计算公式.这些研究成果为爆破地震作用下建筑结构的动力响应特性及其安全评估分析提供了一定的理论基础.

Study on the Single Particle System Architectural Structure Dynamic Response to Blasting Earthquake

At present, the study of blasting earthquake effect is mainly concentrated on the propagating regular of blasting earthquake in rock-soll mass and the regression analysis of monitoring data of blasting vibration, however, the study on the characteristics of the architectural structure dynamic response to blasting earthquake is less. In this paper, the structure dynamic mechanics is applied to the analysis of the architectural structure dynamic response to blasting earthquake. The blasting earthquake dynamic equation of single particle system architectural structure is set up, and the solution of the equation is found. At last , the calculation formula for blasting earthquake force is presented. These results provide some theory for the study on the characteristics of the architectural structure dynamic response to blasting earthquake and the safety evaluation of architectural structure under blasting earthquake.