Abstract
The qualitative analysis for structural robustness study subjected to severe earthquakes is unable to meet engineering requirements, and a quantitative analysis method for structural robustness is needed to be proposed. The existing analysis methods, such as Incremental Dynamic Analysis Method and Pushover method, only study the response of the structure directly from the macroscopic view, rather than focusing on the response of a single component on the structure. Especially for the construction of isolated structure, the impact of accidental bearing failure on the isolated structure and the impact of progressive collapse cannot be considered. In this paper, based on the Alternative Load Path Method, the quantitative analysis method for structural robustness analysis under earthquake is proposed. The structural robustness of some different vertical irregular isolated structures under different earthquakes is studied.
Highlights
Structural robustness is used to represent the ability of a structure to resist a progressive collapse due to the accidental loads
The component importance coefficient and the component vulnerability coefficient of the initial failure component corresponding to each working condition are calculated, and the structural robustness is studied on the basis of this
The robustness of vertical irregularly isolated structures can be drawn: quantitatively analyzed using the Through the above analysis, the following conclusions method proposed in this paper
Summary
Structural robustness is used to represent the ability of a structure to resist a progressive collapse due to the accidental loads. By using the developed pushdown methods, the reserve load carrying capacity of the damaged structure is evaluated; the robustness for resisting progressive collapse of the damaged structure is quantitatively assessed [13]. Method and Pushover Method analyze the overall structure from the macro point of view directly, without focusing on individual components of the response and its failure on the overall structure of adverse effects. Both the Department of Defense (DoD) (2005) [23] and the General Services. The corresponding quantitative analysis method of vertical collapse resistance robustness is put forward, and the method is applied to different vertical irregular base isolation structure models. The structural robustness of the rubber isolation bearing failure is analyzed
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