Papers by Author: Shi Chun Zhao

Abstract: Researches on structural isolation and mitigation under multi-dimensional earthquake excitations are overviewed in terms of the analysis methods, devices and developing trend. The analysis methods for dynamic responses of building structures, long-span reticulated structures and bridges under multi-dimensional earthquake excitations, are systemically introduced. Several types of multi-dimensional earthquake isolation and mitigation devices are presented, and experimental results of a new type of device are discussed, it shows that the new device has good ability of multi-dimensional earthquake isolation and mitigation. Finally, suggestions for further study in this area are presented.

Abstract: Quasi-static test on a half-scale two-story masonry model was carried out to study the seismic strengthening performance and damage characteristic of existing masonry school buildings. The wall piers between openings were partially strengthened with steel mesh mortar splint where the steel mesh is reliably anchored using vertical reinforcements. The results show that strong pier-weak spandrel failure mechanism is guaranteed due to the formation of global failure mechanism. The failure characteristic, energy dissipation capacity and load bearing capacity of masonry structure are significantly improved.

Abstract: Wall and tie column shear strength of every floor in masonry buildings as indicators of earthquake-resistant capacity, the evaluation criteria of the indicators was obtained based on the earthquake damage analysis on the 72 multi-storey masonry buildings in Dujiangyan and Hanwang areas. Based on these tests, a rapid seismic evaluation method of masonry buildings was proposed, this method can assess the degree of earthquake damage for the masonry structure under the level of seismic intensity directly. The application of the method is introduced by analyzing the earthquake damage of a masonry building in Wenchuan earthquake. The results show that the method can evaluate the aseismic performance for masonry buildings, and can assess the degree of earthquake damage additionally.