(3) Parameters and functions of the model are studied, self-power spectrumdensity,mutual-power spectrum density、time delay of the motion,mathematicalmodel of coherence function between two excitations and coherence function betweenthree-dimensional earthquake suitable for the long-span spatial structures areproposed.
Ye. Based on the above theories, several parameters are set reasonably in application. Six grades whose apparent velocity is 50m/s, 100m/s, 200m/s, 300m/s, 500m/s respectively are chosen to simulate the ground motion.
There are three features about the buried pipeline network system, that is, buried in foundation, extented and distributed in plane in a large scale, and possessed of the importance of lifeline engineering, thus the method about it's seismic design and seismic hazard analyses are different from those for the common buildings. In view of these, for the buried pipeline network system, a systematic seismic hazard analysis method is suggested to consider the effects of spatial correlation of earthquake ground m...
By processing the blasting vibration data actually measured around the long-length cartridge with the numerical calculation,the blasting vibration field was developed,making people having an overall view on the blasting vibration effect,so as to carry out safety protection in accordance with the actual condition of engineering blasting.It is believed from the analysis that,the vibration field around the long-length cartridge is composed of a series of vibration lines of concentric ellipse.Close to the cartr...
The paper describes key technologic issues faced by Anti -seismic of high arch dam and research progress of that in both China and abroad. It briefly introduces objectives and thoughts of seismic studies of high arch dam carried out in China in recent years connected with Xiaowan, Xiluodu Water Projects etc. as well as current advancement. Detailed content includes earthquake reaction with arch dam system and its application in Xiaowan Arch Dam Project, dynamic test of arch dam integral and seamed model, ea...