CAJ | 학술논문

大型城市高架桥的爆破拆除工程必须有一个严密的爆破方案，数值模拟可为爆破方案的制订提供有力保障。针对某城市大型高架桥梁的爆破工程，利用LS-DYNA程序，计算分析了高架桥的爆破坍塌全过程，分析了爆破过程及爆破拆除引起的地面振动响应，并与最终的实测数据进行了对比分析。实测数据与计算数据吻合较好，表明该模拟方法能较好地考虑爆破全过程，可在今后类似工程的计算分析中参考使用。
대형성시고가교적폭파탁제공정필수유일개엄밀적폭파방안，수치모의가위폭파방안적제정제공유력보장。침대모성시대형고가교량적폭파공정，이용LS-DYNA정서，계산분석료고가교적폭파담탑전과정，분석료폭파과정급폭파탁제인기적지면진동향응，병여최종적실측수거진행료대비분석。실측수거여계산수거문합교호，표명해모의방법능교호지고필폭파전과정，가재금후유사공정적계산분석중삼고사용。
A rigorous scheme should be taken in advance before a viaduct demolition,and the numerical simula-tion provided effective method to evaluate the scheme. Focused on the blasting engineering of a large-scale city via-duct,the whole process of initiation and collapse were simulated by the program LS-DYNA. The vibration responses of soil surface caused by the blasting and collapse slump touchdown were discussed,and the calculated results fitted the test data well,which was helpful to the design of similar blasting engineering in future.