题名

考量逆衝斷層上下盤震波對單柱式橋墩橋梁反應評估－以集集地震為例

并列篇名

EVALUATION OF HANGING-WALL AND FOOT-WALL EFFECTS ON SINGLE-COLUMN BRIDGES UNDER CHI-CHI EARTHQUAKE

DOI

10.6652/JoCICHE.202311_35(7).0004

作者

林子剛(Tzu-Kang Lin)；楊子慧(Tzu-Hui Yang)；張皓惇(Hao-Tun Chang)；曾榮川(Dzong-Chwang Dzeng)；張國鎮(Kuo-Chun Chang)

关键词

近斷層地震 ； 公路橋梁耐震設計規範 ； 非線性動力分析 ； 人造震波 ； 斷層上下盤 ； near-field earthquake ； bridge specification ； non-linear dynamic analysis ； artificial earthquake ； hanging wall and foot wall

期刊名称

中國土木水利工程學刊

卷期/出版年月

35卷7期（2023 / 11 / 01）

页次

655 - 668

内容语文

繁體中文;英文
中文摘要

在台灣發生集集地震後，交通部考量近斷層需求，以斷層近域調整因子N_A與N_V模擬近斷層地震之特性。但研究指出，近斷層地震歷時在週期較長的情況下仍有較大之譜加速度，且在上盤處易出現近斷層效應，現行規範中並未考量斷層上下盤因素。本研究蒐集車籠埔斷層東西兩側之地震資料，以現行規範之設計反應譜製作的人造震波與原始地震震波，對比一般週期橋梁與較長週期橋梁，探討上下盤地震與長短週期橋梁間的結構反應。最後利用非線性動力分析探討現行規範之設計反應譜是否具有改善及檢討空間，並針對現行規範不足之處給予初步修改建議及檢討。
英文摘要

Taiwan is situated in Circum-Pacific Seismic Belt with many faults in the western part of Taiwan. The latest seismic design code of bridges in Taiwan, which was promulgated in June 2009, has greatly improved the requirements for the seismic performance of bridges after the Chi-Chi earthquake. The design spectrum in the code is adjusted by the near-fault modification factor to simulate the characteristics of near-fault earthquakes. However, researches in recent years have found that the structural response of long-period structures is still amplified under near-fault earthquakes. Besides, the near fault effect often occurred on the hanging-wall side. Therefore, this study aims at the single column pier bridge of two different periods under the artificial seismic wave generated from Chi-Chi earthquake. To discuss the hanging wall and foot wall effects on bridges with short and long periods, non-linear time history analysis was adopted, and hysteresis loop analysis was conducted. Based on the result, the structural response of the hanging wall is larger than that of the foot wall. Therefore, the seismic design in Taiwan should be reconsidered as the correct code-compatible may not be able to cover the near-fault effect under specific situations.
主题分类 工程學 > 土木與建築工程
工程學 > 水利工程
工程學 > 市政與環境工程
参考文献
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