Sewerage system is one of the most important lifeline systems for an urban society. Functional suspension of sewerage system by seismic damages influences the great impact to the citizen's daily life, business continuity of many companies, public health and so on. So, it is very important that the countermeasure against the seismic damages to decrease the effect of the functional suspension of sewerage system is made in advance. And a prospect of the total amount of seismic damages is important to make the restoration plan before earthquake occurrence, too. In this point of view, we estimate the fragility curve function, which is the maximum ground velocity vs. the damage ratio which is proportion of the total length of damaged pipes to the total length of sewerage pipes, to prospect the amount of damages.
Nagata, S., Yamamoto, K., Ishida, H., & Kusaka, A. (2011). Estimation of fragility curve of sewerage pipes due to seismic damaged data. In Procedia Engineering (Vol. 14, pp. 1887–1896). https://doi.org/10.1016/j.proeng.2011.07.237