以離心機實驗與隱式動力有限元素法模擬逆斷層滑動

NCUIR > Engineering College > Graduate Institute of Civil Engineering > Electronic Thesis & Dissertation > Item 987654321/76514

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/76514

Title:	以離心機實驗與隱式動力有限元素法模擬逆斷層滑動
Authors:	陳坤生;Chen, Kun-Sheng
Contributors:	土木工程學系
Keywords:	隱式動力有限元素法;莫爾庫倫模型;塑性力學;塑性流動法則;implicit dynamic finite element method;Mohr-Column model;theory of plasticity;plastic flow method
Date:	2018-08-14
Issue Date:	2018-08-31 11:25:52 (UTC+8)
Publisher:	國立中央大學
Abstract:	台灣位處太平洋地震帶，時常有地震發生，近年來針對地震問題，建築上已經採用相當嚴格的耐震設計，但礙於台灣地狹人稠，許多建築難免會落在斷層範圍區，若發生斷層錯動，地表會產生永久位移，將對建築產生重大損傷，也對人民性命造成危害，故對斷層錯動進行深入的研究與探討，是台灣目前相當重要的課題。本研究結合隱式動力有限元素法與莫爾庫倫模型，對逆斷層實驗進行模擬分析，期望找出適合的分析模式，並加以應用於地震工程上。莫爾庫倫模型是以塑性力學中之塑性流法則所推導，以應力狀態判斷土壤是否進塑性，若進入塑性，則對應力應變關係進行調整，且對土壤參數進行修正。從分析結果發現了一些動力程式特有的問題，如擬靜態實驗模擬中，分析結果深受質量與阻尼影響，需要對質量與阻尼做參數分析，找出適合之參數，以便消除慣性力之影響。最後對隱式動力有限元素法提出了一些建議，期望對未來分析逆斷層實驗時有所幫助。關鍵詞:隱式動力有限元素法、莫爾庫倫模型、塑性力學、塑性流法則 ;Earthquake occurs very frequently in Taiwan because it situates in Circum Pacific-Seismic Belt. The seismic design code has been taken strictly for many kinds of architecture in recent years. However, a lot of buildings are located at the fault zone because the land of Taiwan is not enough for people having such a large living space. The buildings would be damaged and people would be put in danger if the fault dislocates, causing permanent ground displacement. It is a crucial issue by now for Taiwan to profoundly analyze the dislocation of the fault. This research includes implicit dynamic finite element method and Morh Coulomb model, analyzing experimentally the reverse fault. It is expected that be applied in earthquake engineering by figuring out the best analyzing mode. Morh Coulomb model is derived from the plastic flow method, which is from the theory of plasticity, to determine if the stress state of the soil is plastic or not. If so, the soil parameters should be modified, corresponding to the adjustment of the relationship between stress and strain. According to the results after analyzing, there are some specified problems for dynamic program. For an instance, the results are mainly influenced by the mass and the damping in pseudo-static experiment. In order to remove the influence of the inertial force, it needs to find the most suitable parameters while doing the parameter analysis for mass and damping. Finally, the suggestions are made for implicit dynamic finite element method to analyze the reverse fault experiment more comprehensively in the future. Key words : implicit dynamic finite element method, Mohr-Column model, theory of plasticity, plastic flow method
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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