Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Static and dynamic loading tests for precast concrete moment frames under progressive collapse
Highlights Progressive collapse behavior was evaluated for PC moment sub-frames using wet-connection. Four quasi-static loading tests and two dynamic loading tests for PC moment frames. For better progressive collapse resistance, the load resistance of CTA should be greater than that of CAA. The dynamic increase factor was 1.03–1.55, which was less than the requirement of 2.0.
Abstract Precast Concrete (PC) building structures are weak to progressive collapse due to discontinuity of reinforcement at beam-column joints. In the present study, four static loading tests and two dynamic loading tests were performed to investigate the progressive collapse resistance of conventional PC moment frames. The test parameters were the connection detail, bar development length, beam section size, and rebar ratio. The structural performance, such as the load-carrying capacity, deformation capacity, failure mode, and rebar strain, were evaluated. The test results showed that the progressive collapse resistance was significantly affected by the connection detail and beam rebar ratio. Based on the static loading test results, dynamic loading with multi-stage load conditions was applied to two PC specimens. The progressive collapse resistance of the specimens under static and dynamic loadings was compared, and the effect of dynamic loading was discussed.
Static and dynamic loading tests for precast concrete moment frames under progressive collapse
Highlights Progressive collapse behavior was evaluated for PC moment sub-frames using wet-connection. Four quasi-static loading tests and two dynamic loading tests for PC moment frames. For better progressive collapse resistance, the load resistance of CTA should be greater than that of CAA. The dynamic increase factor was 1.03–1.55, which was less than the requirement of 2.0.
Abstract Precast Concrete (PC) building structures are weak to progressive collapse due to discontinuity of reinforcement at beam-column joints. In the present study, four static loading tests and two dynamic loading tests were performed to investigate the progressive collapse resistance of conventional PC moment frames. The test parameters were the connection detail, bar development length, beam section size, and rebar ratio. The structural performance, such as the load-carrying capacity, deformation capacity, failure mode, and rebar strain, were evaluated. The test results showed that the progressive collapse resistance was significantly affected by the connection detail and beam rebar ratio. Based on the static loading test results, dynamic loading with multi-stage load conditions was applied to two PC specimens. The progressive collapse resistance of the specimens under static and dynamic loadings was compared, and the effect of dynamic loading was discussed.
Static and dynamic loading tests for precast concrete moment frames under progressive collapse
Feng, Fei-Fan (Autor:in) / Hwang, Hyeon-Jong (Autor:in) / Yi, Wei-Jian (Autor:in)
Engineering Structures ; 213
05.04.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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