Performance of brick masonry and RCC framed structure subjected to blast loading

Sayandip B. and Helen Santhi M.

This study investigates the response displacement at different floor levels in a two storeyed masonry and a RCC framed structure with brick masonry infill when both are subjected to internal blast loading placed at geometric centre of the buildings. The design and analysis of the same are made using SAP 2000 v14 software. The blast loading applied to the structure is incorporated as a pressure time history for 100 kg TNT at a standoff distance of 2m. The pressure time history corresponding to mass of TNT and stand-off distance is derived using RCBlast v0.5.1 software. The displacement time history and the stress contour generated on the floor and walls are studied.

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The seismic response of a complex slope

Wang Yunsheng, Liu Yong, Luo Yonghong and Yang Shuancheng

Seismic amplification in a slope is the key factor for its stability in the earthquake. Four monitoring stations were installed on the Dongshan Qingchuan, in the North of Sichuan Province, China. Two aftershocks of the Wenchuan earthquake were recorded and it was revealed that PGA amplification in the vertical direction of the ridge is much larger than that along the ridge. As the station is near the epicenter, the PGA amplification in the UD direction increases larger than that of the other two components; the PGA amplification of the horizontal directions at the spur may increase sharply; the constraining effect has an obvious influence on PGA amplification.

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