Effect of alternative load path design method on preventing progressive collapse and reducing the rehabilitation cost using FEMA-P58

被引：0

作者：

Ashoub M.M.N.M. ^{[1
]}

Attia W.A.L. ^{[1
]}

机构：

[1] Department of Structural Engineering, Faculty of Engineering, Cairo University, Giza

来源：

Journal of Engineering and Applied Science | 2023年 / 70卷 / 01期

关键词：

Alternative Load Path; Assessment of Seismic Behavior; FEMA P-58; Nonlinear dynamic analysis; Nonlinear static analysis; Progressive Collapse; Pushover Analysis;

D O I：

10.1186/s44147-023-00248-y

中图分类号：

学科分类号：

摘要：

The alternative load path (ALP) method is an important modern design approach to prevent progressive collapse of buildings by redesigning adjacent structural elements to provide an alternative load path in case of partial collapse. This may lead to tangible changes in the mass and stiffness of the building, which means a change in the seismic behavior of the building. This shows the fact that choosing and designing an alternative load path is not an easy task. Studying the improvement in the seismic behavior of the building, whether direct or indirect, as a result of using the ALP, is the main objective of this paper. To achieve this goal, this study examined approximately 96 models, including the study of the possibility of progressive collapse occurring, whether there is or isn't an alternative path for the loads using non-linear static and dynamic analysis, as well as evaluating the study models using various seismic evaluation methods, where both the nonlinear static pushover analysis method and the FEMA-P58 method were used and compared. The study models are divided into two sections, with and without (ALP). The study models are also categorized by building height using heights of 6, 9, 12 and 15 floors. The models were also divided based on the locations of weak points in the original design that may be susceptible to damage and lead to progressive collapse, whether they are internal, side, or corner weak columns. The findings from the examined models indicate that the efficiency of (ALP) systems is more prominent in low and mid-height buildings compared to tall buildings. Additionally, the results demonstrate that the FEMA-P58 method yields similar predictions regarding building behavior as traditional seismic assessment methods like pushover analysis, but in a simplified manner that benefits non-engineers by providing clear insights into the financial and temporal aspects of different structural system solutions. © 2023, The Author(s).

引用

共 22 条

[1] Alternate Path Analysis and Design Guidelines for Progressive Collapse Resistance Revision (1), (2016)
[2] Design of buildings to resist progressive collapse, Unified Facilities Criteria (UFC 4- 023–03) Washington DC, (2016)
[3] Minimum design loads for buildings and other structures, Report ASCE/SEI, pp. 7-22, (2022)
[4] Marjanishvili S.M., Progressive analysis procedure for progressive collapse, J Perform Constr Facil ASCE, 18, 2, pp. 79-85, (2004)
[5] Starossek U., Typology of progressive collapse, Eng Struct, 29, 9, pp. 2302-2307, (2007)
[6] Sezen H., Giriunas K.A., Progressive Collapse Analysis of an Existing Building, (2009)
[7] Lu X., Lu X., Guan H., Ye L., Collapse simulation of reinforced concrete high-rise building induced by extreme earthquakes, earthq eng struct, Dyn, 42, 5, pp. 705-723, (2013)
[8] Song B., Sezen H., Experimental and analytical progressive collapse assessment of steel frame building, J Eng Struct., 56, pp. 664-672, (2013)
[9] Botez M., Bredean L., Ioani A., Numerical methods in progressive collapse assessment of rc framed structures, international congress on computational mechanics simulation, 5, pp. 978-981, (2014)
[10] Gamaniouk T., Parametric analysis of progressive collapse in high-rise buildings, (2014)

← 1 2 3 →