2007-09-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/698028摘要：1999年9月21日集集地震發生以來，由國家地震中心(2000)所召集之大地工程坡地破壞現地調查，共記錄了436處邊坡破壞，而農委會水保局及林務局(2000)的衛星影像及航照判釋結果，更顯示出多達兩萬餘筆的變異點，地震所導致的邊坡破壞一直為各界所熱切關注，國際上及國內對此一課題亦相當重視。 本研究的重點著重在非液化引起的邊坡破壞，針對邊坡受震時之行為，擬由位移場之觀點進行分析，並藉由模型試驗模擬現地原型邊坡之受震行為。由於邊坡受震之現地觀測不易，故為瞭解邊坡受震時之行為，有必要進行邊坡受震之模型試驗，以對邊坡受震的力學行為做較深入的探討，並利用台灣中部地區自然邊坡集集地震受震時之行為為驗證對象，目的在於建立位移分析理論架構，並討論邊坡受震其滑移情形與以位移量定義破壞的方式，經由模型模擬與現地資料驗證，以期能對邊坡受震行為有更進一步了解，提供未來在地震區之邊坡分析參考。 邊坡模型振動台採用地震記錄及重製邊坡試體，模擬邊坡承受地震之行為，並檢討位移觀點之相似律、邊界效應控制、並擬發展之邊坡受震位移非接觸式量測且實有其必要性，而以位移量定義邊坡受震之反應指標，對於地震下之邊坡行為研究具有重要物理意義，以使邊坡受震時的各項反應與量測，完整呈現邊坡受震反應的行為。藉由試驗結果提供分析模式之檢驗及修正，討論邊坡受震滑移情形，目的在於建立以位移量定義邊坡破壞並做為邊坡受震穩定評估之依據，除較具物理意義外並可直接與集集地震現地調查資料進行比較與驗證，以對邊坡受震行為有更進一步了解，提供未來在地震區之邊坡分析參考。 <br> Abstract: After Chi-Chi earthquake, Sep. 21, 1999, the reconnaissance conducted by NCREE (2000) documented 436 slope failure sites. Soil and Water Conservation Bureau and Taiwan Forest Bureau, Council of Agriculture (2000) used aerial photos and satellite images and identified more than 20,000 land variation items. Slope failure caused by earthquake has become an important topic and more researches concerning the responses of slopes under seismic loading are needed. The objective of this research is to establish the assessment model for seismic slope stability based on the displacement field and performance of the slope. Both laboratory and large-scale model slope tests will be held using shaking table to understand the seismic slope behavior. Large-scale model slope test will be conducted based on earthquake records and reconstituted specimen to simulate prototype slope behavior during earthquake. The Law of Similitude will be reexamined based on the displacement field, and techniques for displacement measurements for both the slope surface and inside the slope mass will be developed to provide further information of seismic slope displacement. Responses as well as the displacements of the slopes will be monitored and analyzed. Based on the testing results, slope analysis will be performed to simulate slope behavior during earthquake. The displacements analysis and assessment model will be established, and verified using field data collected in Chi-Chi earthquake. The results of this study could provide basic understandings of seismic slope behavior and to evaluate the seismic slope stability based on the displacement performance of the slope, which appears to be more solid and can be monitored. This project is a two-year project; current proposal is the first-year of the project.邊坡破壞模型試驗振動台slope failuremodel testshaking table