摘要
爆破设计中,场地条件复杂时经验公式的应用受到一定限制。本文采用波动有限元分析方法,研究复杂场地条件下工程爆破时场地的地震动效应,研究爆破地震动特征及衰减规律。根据某重点工程场地岩土参数的原位测试和试验结果,用自行研制的软件包进行场地爆破地震动效应的数值模拟分析,为工程爆破设计及施工前建筑物、仪器设备的加固提供了依据。施工试爆实测结果与本文数值模拟分析给出的结果一致,说明本文方法是可行的,对其它工程也有借鉴作用。
There is a limit to use empirical formulas in explosion design duo to the complex site condition of a project. The dynamic FEM is used to study the explosion seismic effects of a complex project site. Based on the rock mass parameters measurement in situ, numerical analysis is carried out by using ESELAND(V1.2) program. PGA and PGV of ground surface are computed. The attenuation characteristics are also presented. The experimental data of practical explosion agree well with the numerical analytic results, and some design parameters have been presented for the application of an important project. It shows that the analysis method of explosion seismic effect is feasible, and can be used for reference in other projects.
出处
《地震工程与工程振动》
CSCD
北大核心
2005年第1期8-13,共6页
Earthquake Engineering and Engineering Dynamics
基金
江苏省"333工程"培养基金项目
江苏省"九五"重点科研基金项目(S95-04)
