Reliability analysis on seismic function of city water supply network

Based on the earthquake damage probability prediction model of water supply network the seismic reliability of its water supply network of Ningde City was analyzed and researched by the simplified algorithm of Sine-wave input and Monte Carlo. The results showed that the underground pipeline failure probability increased with the basic increase of earthquake intensity. The environment has a great effect on the earthquake damage of the underground pipeline. The cast iron pipe is more easily destroyed than steel pipe. Large diameter pipe have better seismic performance than small diameter. The destruction of the pipe in the liquefied or weak areas is more seriously. The long-term using, decrease intensity and corrosion, the pipe can be destroyed more seriously. The damage of the pipe is easy to occur in the sharp turn, valve and joints of the equipment.