Role of Underground Structure Deformation Velocity in the Analysis of Blast-Resistant Structures
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摘要: 在地下抗爆结构动力计算中,结构变形速度的作用是非常突出的.考虑结构变形速度的作用,所建立的结构体系运动微分方程可以真实地描述结构振动的实际情况.文中通过一维平面波理论,导出了作用在结构周边上的荷载表达式,给出了地下曲杆结构动力分析的广义变分原理,同时还进行了数值计算结构的对比分析.Abstract: The strucural deformation velocity plays a significant role in the dynamic calculation of underground blastresistant stuctures. The motion differentiating equation of a structure system taking into account the role of deformation velocity of the structure will truthfully describe the actual situation of structural vibration. With the one-dimensional plane wave theory, the expression of load on the structural periphery is developed, and the generalized variation principle for the dynamic analysis of underground arched-bar structures is given. At the same time, the results of the numerical calculation are comparted.
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[1] 赵晓兵,方秦.在爆炸荷载作用下平面曲杆结构震动分析[J].防护工程,1999,(3):20-25. [2] 钱伟长.变分法及有限元[M].北京:科学出版社,1980. [3] 薛大为.大变形非线性弹性力学的广义变分原理[J].应用数学和力学,1991,12(3):209-215. [4] 赵玉祥,顾祥珍.在爆炸荷载作用下地下圆形结构动力分析[J].地下工程,1978,(6):26-31. -
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