Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Seismic damage control of steel bridge piers by adding low-yield-point steel (LYPS) plates
Bridge piers with steel hollow box sections are widely used in Japan for highway bridges. Unlike the steel columns in buildings, these piers are designed with high width-thickness ratios of component plates. This makes them susceptible to damage during severe earthquakes. In order to improve the seismic performance, an energy absorption strategy which localizes damage in structural systems is proposed: concentrating damage in specially designed weak structural elements, with which energy is absorbed during earthquake. Here, Low yield point steel (LYPS) plates attached to steel pier are employed as the weak elements. LYPS is a new kind of material which has low yield stress (around 100 MPa), large ductility and adequate fatigue life. In case of earthquake events, LYPS plates yield to absorb energy and keep the main structure always elastic. In this way, damage is concentrated in LYPS plates which can be easily replaced after earthquake. The paper starts with construction of constitutive model of LYPS with verification by experiment. The energy absorption performance of LYPS plates is studied by 3-dimensional finite element analysis (3DFEM), and optimal design method is proposed.
Seismic damage control of steel bridge piers by adding low-yield-point steel (LYPS) plates
Bridge piers with steel hollow box sections are widely used in Japan for highway bridges. Unlike the steel columns in buildings, these piers are designed with high width-thickness ratios of component plates. This makes them susceptible to damage during severe earthquakes. In order to improve the seismic performance, an energy absorption strategy which localizes damage in structural systems is proposed: concentrating damage in specially designed weak structural elements, with which energy is absorbed during earthquake. Here, Low yield point steel (LYPS) plates attached to steel pier are employed as the weak elements. LYPS is a new kind of material which has low yield stress (around 100 MPa), large ductility and adequate fatigue life. In case of earthquake events, LYPS plates yield to absorb energy and keep the main structure always elastic. In this way, damage is concentrated in LYPS plates which can be easily replaced after earthquake. The paper starts with construction of constitutive model of LYPS with verification by experiment. The energy absorption performance of LYPS plates is studied by 3-dimensional finite element analysis (3DFEM), and optimal design method is proposed.
Seismic damage control of steel bridge piers by adding low-yield-point steel (LYPS) plates
Zheng, Yi (Autor:in) / Abe, Masato (Autor:in) / Fujino, Yozo (Autor:in) / Wilde, Krzystof (Autor:in)
Smart Structures and Materials 1998: Smart Systems for Bridges, Structures, and Highways ; 1998 ; San Diego,CA,USA
Proc. SPIE ; 3325
17.06.1998
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Seismic damage control of steel bridge piers by adding low-yield-point steel (LYPS) plates [3325-10]
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