Abstract
This paper deals with an analytical method of seismic risk assessment for sewage pipe, and shows analytical procedures of this assessment together with numerical simulation. Also, this paper compares of the seismic risk of the small-diamter sewage pipe of φ450mm and shield tunnel of 1800mm. Seismic risk is statistically analyzed by seismic risk curve using both data of seismic hazard analysis and seismic performance assessment. Damage cost consists of repair cost, user loss and operating losses associated with the seismic damage. This study demonstrates the proposed method can evaluate the seismic risk of sewage pipe and evaluates seismic performance level for sewage pipe for loss cost.