冲击荷载下单层凯威特型球面网壳的防护方法及建议

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (8) : 136-142.

论文

冲击荷载下单层凯威特型球面网壳的防护方法及建议

王多智1，范峰2，支旭东2，戴君武1

作者信息 +

Defence method and suggestion for a single-layer kiewitt-8 reticulated dome under impact loads

WANG Duo-zhi1, FAN Feng 2, ZHI Xu-dong2, DAI Jun-wu1

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文章历史 +

摘要

避免结构在冲击荷载下出现整体倒塌为防护目标，对单层凯威特型球面网壳的抗冲击防护方法进行研究。应用有限元软件ANSYS LS/DYNA建立凯威特型单层球面网壳与圆柱形冲击物的模型，并展开大量参数分析工作。在此基础上，依据网壳结构的冲击失效规律及连续倒塌的特点，提出可供实际应用的冲击荷载下网壳结构的3种防护方法（轻屋面，整体加强法，临界位置加强法）；并分别对防护效果进行验证。然后综合考虑防护效果与结构成本，提出冲击荷载下网壳结构的防护建议。

Abstract

Research on defence method and suggestion of single-layer Kiewitt-8 Reticulated Dome under impact is conducted aiming at resisting global collapse of structure under impact. The FE models of single-layer Kiewitt-8 Reticulated Dome and the cylindrical impactor were developed incorporating ANSYS/LS-DYNA. Then numerical simulations of the dynamic behaviour of domes subjected to impact were conducted. And three defence methods, which are light roof, global reinforced and critical location reinforced, are put forward for reticulated dome under impact. Moreover, the defence effection is analysised. Based on the theory above, defence suggestion is put forward taking defence effection and cost into account.

导出引用

王多智;范峰;支旭东;戴君武. 冲击荷载下单层凯威特型球面网壳的防护方法及建议[J]. 振动与冲击, 2012, 31(8): 136-142

WANG Duo-zhi;FAN Feng;ZHI Xu-dong;DAI Jun-wu. Defence method and suggestion for a single-layer kiewitt-8 reticulated dome under impact loads[J]. Journal of Vibration and Shock, 2012, 31(8): 136-142