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Student Number 83322033 Author Ming-Huei Wang(王明輝) Author's Email Address No Public. Statistics This thesis had been viewed 337 times. Download 11 times. Department Civil Engineering Year 1995 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Title Nonlinear Seismic Analysis of Irreguler Soil Stratum Date of Defense 0000-00-00 Page Count 106 Keyword effective stress analysis local irregularity nonlinear analysis site effect Abstract Both the previous studies and measured earthquake

acceleration recordshave indicated the focusing of wave

energy due to the local irregularity ofground can generate large

motion amplification in limited zones. This effect is of

significance in the assessment of seismic risk. In this study,

the eff-fect of local irregularity on the seismic moti-on is

investigated using a non-linear effective stress finite element

procedure which can also simulate thechange of water table

during earthquakes. The soilnonlinearity is accounted for

using the cap model and the pore pressure model based on the cap

model isalso adopted. The lateral infinite extent of soil

stratum is modeled using theviscous boundary derived consi-

dering the soil asa porous medium. The seismic responses at the

surface of an alluvial basin underlain by rock are then stud-

ied.From the analyses,it can be observed that (1). the steeper

the rock slope is, the larger the responses at the surface are

;(2).as compared with the re-sults of elastic analysis, the

nonlinear soil behavior will help reducing the surface

acceleration responses but will increase the displacement

responses; the similar observations can also be made for the

soil stratum with lique-fiable soil;(3) the surface motions are

less affected by the initial depth ofwater table.Table of Content 第一章 緒論

1-1研究背景與動機 1

1-2文獻回顧 2

1-3研究方法 4

1-4論文內容 4

第二章 理論推導

2-1前言 6

2-2分析系統之基本控制方程式 6

2-3分析系統控制方程式之有限元素解析 11

2-4多孔介質之吸能邊界 14

2-5分析系統之模擬 16

2-5-1保水取縣 16

2-5-2帽蓋非線性模式 17

2-5-3孔隙水壓模式 18

2-5-4地下水位變動之模擬 20

第三章參數研究

3-1前言 22

3-2盆地地形與水平土層的比較 23

3-3邊坡角度的影響 24

3-4土壤液化潛能的影響 26

3-5地盤塑性行為的影響 27

3-6地下水位高度的影響 28

3-7盆地土壤深度的影響 29

第四章結論與建議

4-1結論 30

4-2建議 31

參考文獻 32Reference 1.黃俊才,「考慮地下水引至地下水位變動的土壤結構互制分析」,國立中央大學博士論文,中壢,民國83年6月。

2.邱宏智,「場址對地震波的效應」,地工技術雜誌,第27期，第92-104頁，民國78年9月。

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32

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Prediction in Finit Element Analysis, "International Journal for Numerical

and Analytical Methods in Geomechanics, Vo1.13, pp.477-491, 1989.

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33

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~ . .

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Model for the Seismic Site Response of Alluvial Valleys, " Soil Dynamics

and Earthquake Engineering, Vol. 14, pp.199-210, 1995.Advisor (李建中)

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