Analysis and Evaluation of the Progressive Collapse Behaviour of a Cable Dome Structure

Abstract

In this study, the progressive collapse behaviour of a cable dome structure was analysed and evaluated according to the importance of element. First, the dynamic response and collapse mode caused by the removal of different types of cables and struts from a cable dome structure were studied using the instantaneous unloading method of full dynamic equivalent load. Second, a method was developed for element importance classification based on collapse modes, and the importance coefficient was introduced after comparing the node displacements before and after the removal of different elements. On this basis, the correlations of the importance coefficient of an element with its importance classification and the collapse mode caused by its removal were examined. Third, the influences of some design parameters on the resistance of cable dome structures to progressive collapses and on the importance coefficients of components were analysed and evaluated. Finally, a method was proposed to determine the critical value of the element importance category. The results of this study indicated that Cable-Strut elements differed in their antiprogressive collapse effects and importance coefficients, and thus produced different dynamic responses and collapse modes when they were removed. Cable domes differed in their critical importance coefficients for Cable-Strut elements, and design parameters differed in their influence on the antiprogressive collapse resistance of cable domes.

Analytical Study of Structural Conformation and Prestressing State of Drum-Shaped Honeycomb Quad-Strut Cable Dome Structure with Different Calculation Methods

“…Zhang Ailin et al [5][6][7][8][9][10] have carried out a comprehensive series of studies focusing on the static performance and structural optimization of different cable dome configurations, including T-shaped three-strut-rod cable domes, star-shaped tetrahedral cable domes, and single-double-strut staggered cable domes. Their research findings emphasize the significant influence of the structural topology of cable dome configurations on the mechanical properties of these structures.…”

Study on the Dynamic Response of the Component Failure of Drum-Shaped Honeycomb-Type III Cable Dome with Quad-Strut Layout

“…Ran Zhao et al [14] studied the analysis of cable breakage of the cable membrane structure of Baoan Stadium in Shenzhen and gave the static response of the structure under constant load. Lianmeng Chen et al [15] conducted a cable rod breakage analysis for a rib-ring type cable dome, but the dynamic time response process was not given. Jinyu Lu et al [16] and Xiaofeng Jiang et al [17] analyzed the dynamic response and collapse process of the structure after the breakage of the cable-rod tension structure and tension string beam.…”

A numerical method to solve structural dynamic response caused by cable failure

“…The research shows that the dynamic behavior caused by cable failure may lead to local failure or progressive collapse of the structure (Lu et al. , 2021; Chen et al. , 2022; Liu et al.…”

“…example, the failed cables are removed, and the static calculation of the remaining structure is carried out. The research shows that the dynamic behavior caused by cable failure may lead to local failure or progressive collapse of the structure (Lu et al, 2021;Chen et al, 2022;Liu et al, 2022a, b). Therefore, more and more scholars and researchers began to focus on structural dynamic problems caused by cable failure.…”