Development of Fragility Curves with Interaction ofUnderground Tunnels and Buildings

• Main Authors: TSAI,CHIN-HAO, 蔡智豪
• Other Authors: CHEN,KUAN-HSOUNG
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/08173241367146134526

碩士 === 國立金門大學 === 土木與工程管理學系碩士班 === 104 === Abstract The objective of this research is to develop fragility curves of interaction between tunnels and buildings under near fault earthquakes. The eleven-story of RC building is selected to study its interaction with underground shelter tunnels. The nearby geologic data are needed to collect, classify, and simulate. The analytical simulation is adopted. The moment resisting frame of the building is modeled with beam and column elements. The walls of the underground base are utilized with shell elements. The soil mediums are simulated with solid elements. The viscous transmitting elements are attached to boundaries for avoiding reflection of seismic waves. The near fault earthquakes are transformed into the components of fault-normal (FN) and fault-parallel (FP). This research is organized into two topics. 1.Comparing the seismic damage probability of fault-normal and fault-parallel components to the interaction between tunnels and buildings. 2.Evaluating safety of the aged RC tunnels due to deterioration of concrete and corrosion of steel. Topic one is devoted to study the interaction between tunnels and buildings. The buildings are dominated with inertial force vibration. However, the underground tunnels are governed by shear deformation of the mediums. The buildings with vibration-control have greater damage than those of the tunnels with deformation-control. The responses of the buildings with FN components lead to a higher probability of damage than those with FP components. The similar performance trends are also observed in the tunnels. Topic two focuses on evaluating the safety of the aged RC tunnels due to deterioration of concrete and corrosion of steel. Only one location was observed with the leakage at the arch roof. However, a reduction of the tunnel strength is adopted to account for deterioration of concrete and corrosion of steel. The damage probability of exceedance increases with an increase of strength reduction. The results of this research can be implemented to the safety evaluation of the similar underground tunnels. Keywords: Tunnels, near fault earthquake, PGA, deterioration, corrosion, fragility curve.