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介绍了一种在爆前即能预测建筑结构对爆破震动的响应的方法。通过预测结构地基的震动波形计算结构的抗震设计反应谱 ,用动力分析法计算结构在爆破震动作用下的响应。预测结果为结构所受内力的定量数值 ,并且还可通过不同延期时间下的预测结果比较 ,为爆破设计选取最佳延期时间。实际应用表明 ,预测结构可靠。此方法可用于预测结构在爆破震动作用下的安全性。
A method to predict the response of building structure to blasting vibration before explosion is introduced. The seismic design response spectrum of the structure is calculated by predicting the vibration waveform of the structural foundation. The dynamical analysis method is used to calculate the response of the structure under the action of blasting vibration. The predicted result is the quantitative value of the internal force suffered by the structure, and the optimal delay time can also be selected for the blasting design through the comparison of the predicted results under different postponement periods. Practical application shows that the forecast structure is reliable. This method can be used to predict the safety of the structure under blasting vibration.