Analysis of axially restrained water storage tank under blast loading

作者：Wang Yonghui; Xiong Ming Xiang^*

来源：International Journal of Impact Engineering, 2015, 86: 167-178.

DOI：10.1016/j.ijimpeng.2015.07.012

• Water storage tank
• Blast loading
• Pressure-impulse diagram
• Dynamic increase factor

The water storage tank was proposed as a multi-functional facade system characterizing energy saving and blast resisting. The energy saving performance, not presented in this paper, has been evaluated by experimental and numerical methods. The aim of this study is to propose simplified methods to reasonably predict the response of water storage tank under blast loading. Based on the equivalent single-degree-of-freedom (SDOF) method, the shock spectrum and dimensionless pressure impulse (P-I) diagram were established, which can be used to evaluate the damage levels of water storage tanks subject to blast loading. The equivalent SDOF method cannot capture the varying deflection shape of structure during motion, herein the Lagrange equation method that allows for multiple deflection shape functions was proposed to predict the structural response. It was shown that the Lagrange equation method was better than the SDOF method since it could provide conservative predictions in all response regimes. Furthermore, the varying dynamic increase factor (DIF) with strain rate was incorporated into the Lagrange equation method to capture the strain rate effects.

• 出版日期2015-12