Seismic Reliability Analysis for Deteriorating Reinforced Concrete Bridges

• Main Authors: Yue-cong Lyu, 呂岳璁
• Other Authors: Chien-Kuo Chiu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/78282662696335376382

碩士 === 國立臺灣科技大學 === 營建工程系 === 101 === This study is doing the research about far-field earthquake which may cause harm to Taipei Basin. In order to prevent a disaster before the event, The far-field earthquake can divided into two types: Characteristic Earthquake and Regional Earthquake. The former use information in Hsincheng Fault, Tuntzuchiao Fault and Milun Fault, the latter in Hualien and Ilan. This study uses probability Model to reckon the frequency,Occurrence Probability and average size of the earthquake in fifty years and a hundred years in the future. The Regional Earthquake adopt Poisson Distribution and the Characteristic Earthquake adopt Log-Normal Distribution. The Microzonation of Taipei Basin Select TAP013,TAP022 and TAP088. The research puts different kind of RC bridge model in each Microzonation section, analyzing the frequency of earthquake,and the degree of damage under the circumstance of unrepaired the bridge by adding each Hysteresis Loop's Energy and modifying the Performance of the structure. The analyze methods are as follows:(1) Ground-Motion Time Histories Compatible and (2) Equivalent Single-degree-of-freedom By entering the parameter into the Takeda Model to do NonlinearDynamic Structural Analysis, Results are substituted into (Park and Ang, 1985) formula,to get the RC bridge damage index. This study use Monte Carlo to Simulate the Seismic Sequences for a thousand times to analyze the damage exceedance probability in fifty years and a hundredyears in the future. In addition, to the chloride deterioration in Ilan Suao(ILA007), three RC bridge models in different distance from the sea(0.1 km,0.3km,1.0km and 3km), taking deterioration and seismic damage into consideration to know the influence to the seismic performance.