工程爆破

2016, v.22(05) 1-6+91

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基于CONWEP动态加载的建筑物爆破拆除数值模拟
Numerical simulation of blasting demolition of buildings and structures based on CONWEP dynamic loading

杨军;张帝;任光;
YANG Jun;ZHANG Di;REN Guang;State Key Laboratory of Explosion Science and Technology,School of Mechatronical Engineering,Beijing Institute of Technology;

摘要(Abstract):

建(构)筑物爆破拆除数值模拟通常采取单元删除法模拟爆破切口的形成,而忽略了在爆炸载荷下形成爆破切口时动态冲击作用对结构失稳倒塌的影响。基于Abaqus/Explicit,将内置的CONWEP爆炸加载方式和经典JwL状态方程加载方式进行对比。对CONWEP方式加载进行当量转化,将工程装药量转化为模拟装药量,实现了爆破加载模拟。最后将CONwEP动态加载方式用于模拟爆破切口的形成,分析爆炸载荷下建(构)筑物的连续倒塌过程,采取更接近拆除实际的模拟方法,并获得有益的进展。
Unit delete method was often used to simulate the formation of blasting notch in the numerical simulation of demolition of buildings and structures,but the effect of dynamic impact of blast loading to structural instability was ignored.Based on Abaqus/Explicit,CONWEP explosion loading and loading classic JWL equation of state were compared.CONWEP loading method was converted equivalents and engineering charge amount was converted to simulate charge amount to achieve the simulation of blast loading.Finally,CONWEP dynamic loading was applied to the formation of blasting notch,so that the progressive collapse process of constructions and structures under blast loading was analysed and the simulation closer to actual demolition was found.

关键词(KeyWords): 爆破拆除;数值模拟;CONWEP;动态加载
Blasting demolition;Numerical simulation;CONWEP;Dynamic loading

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基金项目(Foundation): 国家自然科学基金(51374038)

作者(Author): 杨军;张帝;任光;
YANG Jun;ZHANG Di;REN Guang;State Key Laboratory of Explosion Science and Technology,School of Mechatronical Engineering,Beijing Institute of Technology;

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