Extension of the Modal Pushover Analysis to Assess Structures Exposed to Blast Load
Publication: Journal of Engineering Mechanics
Volume 144, Issue 3
Abstract
Blast-load effects on structures are notably dangerous, and the damage and destruction that they cause are considered a great threat to human lives. Nonlinear dynamic analysis (NDA) is recognized as an accurate method for analyzing structures under blast waves. However, because of the time-consuming nature of this analysis, a simple alternative method with a sufficient degree of accuracy is essential. This study aims to extend the concept of the well-known modal pushover analysis (MPA) to assess structures under blast loading. MPA is currently used to analyze structures under seismic excitation. In an earthquake analysis, forces are distributed over the height of the structure in proportion to the mass concentration. However, in the blast-loading scenario, the distribution of forces on the building depends on the magnitude and location of explosion, regardless of the mass distributions. Based on these differences, the fundamental formulations of the MPA are modified, and a step-by-step procedure is accordingly proposed. The effectiveness of the proposed procedure is assessed by examining an eight-story shear-wall structure. The results show that the proposed procedure is sufficiently accurate in comparison with the exact NDA.
Get full access to this article
View all available purchase options and get full access to this article.
References
ASCE. (2014). “Seismic evaluation and retrofit of existing buildings.” ASCE 41-13, Reston, VA.
Chopra, A. K. (2007). Dynamics of structures: Theory and applications to earthquake engineering, Prentice-Hall, Upper Saddle River, NJ.
Chopra, A. K., and Goel, R. K. (2002). “A modal pushover analysis procedure for estimating seismic demands for buildings.” Earthquake Eng. Struct. Dyn., 31(3), 561–582.
Chopra, A. K., Goel, R. K., and Chintanapakdee, C. (2004). “Evaluation of a modified MPA procedure assuming higher modes as elastic to estimate seismic demands.” Earthquake Spectra, 20(3), 757–778.
Comeliau, L., Rossi, B., and Demonceau, J.-F. (2012). “Robustness of steel and composite buildings suffering the dynamic loss of a column.” Struct. Eng. Int., 22(3), 323–329.
Dragos, J., and Wu, C. (2014). “Single-degree-of-freedom approach to incorporate axial load effects on pressure impulse curves for steel columns.” J. Eng. Mech., 04014098.
Fallah, A. S., and Louca, L. (2007). “Pressure-impulse diagrams for elastic-plastic-hardening and softening single-degree-of-freedom models subjected to blast loading.” Int. J. Impact Eng., 34(4), 823–842.
FEMA. (2005). “Improvement of nonlinear static seismic analysis procedures.” FEMA-440, Redwood City, CA.
Hamra, L., Demonceau, J.-F., and Denoël, V. (2015). “Pressure-impulse diagram of a beam developing non-linear membrane action under blast loading.” Int. J. Impact Eng., 86, 188–205.
Hernandez-Montes, E., Kwon, O.-S., and Aschheim, M. A. (2004). “An energy-based formulation for first-and multiple-mode nonlinear static (pushover) analyses.” J. Earthquake Eng., 8(1), 69–88.
Huvelle, C., Hoang, V.-L., Jaspart, J.-P., and Demonceau, J.-F. (2015). “Complete analytical procedure to assess the response of a frame submitted to a column loss.” Eng. Struct., 86, 33–42.
Krauthammer, T. (1998). “Blast mitigation technologies: Developments and numerical considerations for behavior assessment and design.” WIT Trans. Built Environ., 35, 1–10.
López-López, A., Tomás, A., and Sánchez-Olivares, G. (2016). “Influence of adjusted models of plastic hinges in nonlinear behaviour of reinforced concrete buildings.” Eng. Struct., 124, 245–257.
MATLAB [Computer software]. MathWorks, Natick, MA.
Mays, G. (1995). Blast effects on buildings: Design of buildings to optimize resistance to blast loading, Thomas Telford, London.
Minghini, F., Bertolesi, E., Del Grosso, A., Milani, G., and Tralli, A. (2016). “Modal pushover and response history analyses of a masonry chimney before and after shortening.” Eng. Struct., 110, 307–324.
Ngo, T., Mendis, P., Gupta, A., and Ramsay, J. (2007). “Blast loading and blast effects on structures: An overview.” Electron. J. Struct. Eng., 7, 76–91.
Paraskeva, T. S., and Kappos, A. J. (2010). “Further development of a multimodal pushover analysis procedure for seismic assessment of bridges.” Earthquake Eng. Struct. Dyn., 39(2), 211–222.
Park, S., Xia, Q., and Zhou, M. (2001). “Dynamic behavior of concrete at high strain rates and pressures. II: Numerical simulation.” Int. J. Impact Eng., 25(9), 887–910.
PERFORM 3D version 4.0.1 [Computer software]. Computers and Structures, Berkeley, CA.
Reyes, J. C., and Chopra, A. K. (2011). “Three-dimensional modal pushover analysis of buildings subjected to two components of ground motion, including its evaluation for tall buildings.” Earthquake Eng. Struct. Dyn., 40(7), 789–806.
Saedi Daryan, A., Soleimani, S., and Ketabdari, H. (2017). “A modal nonlinear static analysis method for assessment of structures under blast loading.” J. Vibr. Control, 107754631770851.
Soleimani, S., Aziminejad, A., and Moghadam, A. (2017). “Extending the concept of energy-based pushover analysis to assess seismic demands of asymmetric-plan buildings.” Soil Dyn. Earthquake Eng., 93, 29–41.
Xiang, Y., Luo, Y.-F., and Shen, Z.-Y. (2017). “An extended modal pushover procedure for estimating the in-plane seismic responses of latticed arches.” Soil Dyn. Earthquake Eng., 93, 42–60.
Yang, B., Tan, K. H., and Xiong, G. (2015). “Behaviour of composite beam-column joints under a middle-column-removal scenario: Component-based modelling.” J. Constr. Steel Res., 104, 137–154.
Zhang, F., Wu, C., Zhao, X.-L., and Li, Z.-X. (2017). “Numerical derivation of pressure-impulse diagrams for square UHPCFDST columns.” Thin Walled Struct., 115, 188–195.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 144 • Issue 3 • March 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Oct 23, 2016
Accepted: Aug 31, 2017
Published online: Jan 12, 2018
Published in print: Mar 1, 2018
Discussion open until: Jun 12, 2018
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.