黃燦輝2006-07-252018-07-092006-07-252018-07-092005http://ntur.lib.ntu.edu.tw//handle/246246/2886長期以來，土壤隧道如地下捷運 之設計，均需考慮耐震分析，且有明 確可行之規範可供依循；然岩石隧道 除了一些特殊洞口段、淺覆蓋段與交 叉段有配筋外，其餘路段則不管地質 良窳，其內襯砌皆未有配筋之規定， 即無耐震設計之考量，且無可靠量化 之規範可供參考使用。1999 年921 集 集大地震後，台灣有多座岩石隧道遭 受損壞，除洞口段受損外，隧道襯砌 亦產生了裂縫，其中以鐵路山線三義 壹號隧道為最。 又鑑於岩石隧道圍岩之波傳特 性、構築方式與地形效應等，迴異於 土壤隧道者，因此岩石隧道受震行為 如何？破壞模式為何？土壤隧道之耐 震規範是否仍能應用於岩石隧道，應 作如何修改？皆是值得探討之課題。 台灣地震發生頻繁，且隧道總長度已 逾數百公里，使得岩石隧道之耐震分 析與設計課題之研究，甚為殷切。 循此，本研究擬透過國內外震後 岩石隧道破壞案例之蒐集與整理，探 討隧道受震時之破壞模式、力學機制 與影響因素等，並建立一套適當的分 析模式，以期瞭解隧道受震時之支撐 應力與變形。本研究之成果包括岩石 隧道與土壤隧受震特性比較；破壞模 式整理及分類；釐清岩石隧道之受震 行為如破壞模式、支撐行為、動態應 力大小等；建立不同岩盤狀況(岩體分 類)下隧道之受震行為，並分別探討隧 道在不同覆蓋深度、軟硬地盤互層、 鄰近地質弱帶等受震行為；依代表性 隧道受震破壞案例，進行岩石隧道破 壞模式與其機制探討，並提出岩石隧 道耐震設計之建議，以供工程界之參 考應用。the earthquake analysis followed by a seismic code has been taken into account in the MRT tunnel design. Except for the portion of portal or shallow buried tunnel, the inner lining with no reinforcement has been considered in the tunnels located in rocks regardless of their geological properties. This means that it has no seismic design and is also no seismic code to be abided by. After 921 Chi-Chi Earthquake, most damages, as anticipation, happened in the portion of portal, however, one needs to be careful with the inner lining damages occurred in the portion with higher overburden which usually gives no damages in accordance with the past experiences. The famous example is the one happened in the San-I Tunnel. During the earthquake or an ensemble of earthquake after shocks, tunnel may exceed their functional and structural limits due to the wave propagation ways of surrounding rock ,construction methods and topographic effect .Therefore, various issues on the behaviors and failure modes of rock tunnel during the earthquakes, have been brought to discussion. Taiwan is an earthquake-prone country. Moreover, there are many tunnels stretched a few hundred kilometers long in Taiwan. Therefore, the study on the earthquake resistant analyses and designs of rock tunnels has become more and more popular nowadays. Therefore, this research is aimed by taking the results of numerous scientific investigations in local and overseas earthquakes, the shaking it produced and its damaging effects in the rock tunnels. Also taking into considerations the various factors causing the earthquake effects, the analysis of earthquake mechanisms, with the establishment of appropriate analysis model, this research aims to understand the structural seismic vulnerability of rock tunnels when earthquakes occurred. The results of this research include the evaluation of the suitability and limitations of the use of soil tunnel seismic resistant design specifications to rock tunnel design, a better understanding of the rock tunnel behavior such as the forms of deformations, the support behavior and the ability to withstand strong earthquake motions. Also, this research establish a summary on how the tunnel behaves, and its ability to withstand earthquake under different rock classifications. This research will also include some recommendations on rock tunnel earthquake resistant design to serve as a reference material in tunneling engineering field.application/pdf6077231 bytesapplication/pdfzh-TW國立臺灣大學土木工程學系暨研究所岩石隧道受震行為破壞模式rock tunnelseismic behaviorfailure modesreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/2886/1/932211E002008.pdf