Analysis of axially restrained water storage tank under blast loading

Abstract 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.

[1]  A. Soleiman Fallah,et al.  Pressure–impulse diagrams for elastic-plastic-hardening and softening single-degree-of-freedom models subjected to blast loading , 2007 .

[2]  J. Y. Richard Liew,et al.  Structural performance of water tank under static and dynamic pressure loading , 2015 .

[3]  null null,et al.  Blast Protection of Buildings , 2011 .

[4]  John M. Biggs,et al.  Introduction to Structural Dynamics , 1964 .

[5]  Flavio Stochino,et al.  Theoretical models to predict the flexural failure of reinforced concrete beams under blast loads , 2013 .

[6]  null null,et al.  Design of Blast-Resistant Buildings in Petrochemical Facilities , 2010 .

[7]  Sam E. Rigby,et al.  Elastic-plastic response of plates subjected to cleared blast loads , 2014 .

[8]  Azrul A Mutalib,et al.  Development of P-I diagrams for FRP strengthened RC columns , 2011 .

[9]  Siew Chin Lee,et al.  Heat Transfer Analysis of Water Storage Façade System , 2013 .

[10]  Qingming Li,et al.  Pulse loading shape effects on pressure–impulse diagram of an elastic–plastic, single-degree-of-freedom structural model , 2002 .

[11]  Colin M. Morison,et al.  Dynamic response of walls and slabs by single-degree-of-freedom analysis—a critical review and revision , 2006 .

[12]  Qingming Li,et al.  Pressure-Impulse Diagram for Blast Loads Based on Dimensional Analysis and Single-Degree-of-Freedom Model , 2002 .

[13]  Luke A. Louca,et al.  Strain rate effects on the response of stainless steel corrugated firewalls subjected to hydrocarbon explosions , 2004 .

[14]  Ted Krauthammer,et al.  Behavior of reinforced concrete columns under combined effects of axial and blast-induced transverse loads , 2013 .

[15]  T. Krauthammer,et al.  Modified SDOF Analysis of RC Box-Type Structures , 1986 .

[16]  Hong Hao,et al.  Numerical derivation of pressure-impulse diagrams for prediction of RC column damage to blast loads , 2008 .

[17]  J. Jones,et al.  Finite difference analysis of simply supported RC slabs for blast loadings , 2009 .

[18]  A. Ghani Razaqpur,et al.  Single and multi degree of freedom analysis of steel beams under blast loading , 2012 .

[19]  Theodor Krauthammer,et al.  Pressure–impulse diagrams for the behavior assessment of structural components , 2008 .

[20]  Chengqing Wu,et al.  A new general approach to derive normalised pressure impulse curves , 2013 .

[21]  B. Donaldson.  Introduction to Structural Dynamics , 2006 .