一种新型结构体系抗震鲁棒性研究

Structural seismic robustness requires that the structure is capable of resisting disproportionate collapse because of local damage in strong earthquake. This paper introducts multi-ribbed composite wall structure with energy-saving and aseismic，lightweight and high strength a structural system with large space at the bottom. The damage-reduction prinpcle of the structure is studied. According to the experimental data of seismic performance of the structure, the damage index of the structural bearing member is discussed. The robustness assessment index is put forward, the Irob value of multi-ribbed composite slab supported on frame structure is calculated and analyed. The analytical results illustrate that this new structure has adequate seismic robustness.