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Student Number 85322037
Author Chien-wen Kuo(郭建文)
Author's Email Address No Public.
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Department Civil Engineering
Year 1998
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title
Date of Defense
Page Count 138
Keyword
  • coefficient of subgrade reaction
  • mat foundation
  • Abstract In the analysis and design of mat foundation , there are two type methods : finite-element structural analysis model and simplified structural analysis model . But the simplified structural analysis model does not pass through a detailed self-criticism process . So this research hope to bring up some suggest about analyze and design the mat foundation by using simplified structural analysis model . This research is to analyze the behavior of mat foundation under loading by the method of finite-element structural analysis model and simplified structural analysis model , which regard the soil as the Winkler type of subgrade reaction springs that do not affect one another .
    In the simplified structural analysis model , "Yield Line Theory" is used to distribute the spring stiffness of each beam . Therefore , beams can be imagined to be on some springs with different elastic modulus .
    Base on some numerical comparisons with the results by finite-element structural analysis model and simplified structural analysis model , we decide the numbers , stiffness and position of springs in each beam . In the meanwhile , we bring up a method to analyze and design the slab of mat foundation .
    Table of Content 第一章 緒論………………………………………………………………1
    1-1 研究動機與目的…………………………………………………1
    1-2 筏基簡介…………………………………………………………2
    1-3 文獻回顧…………………………………………………………2
    1-4 研究方法…………………………………………………………5
    1-5 論文內容…………………………………………………………6
    第二章 筏式基礎之傳統分析模式………………………………………7
    2-1 前言………………………………………………………………7
    2-2 地梁構件…………………………………………………………7
    2-3 筏基版……………………………………………………………8
    2-4 筏基版下支承土壤………………………………………………8
    2-5 傳統上筏式基礎分析模式之建立………………………………11
    2-5-1 有限元素分析模式(Fem)……………………………11
    2-5-2 傳統簡化分析模式…………………………………12
    2-6 傳統簡化分析模式之數值分析結果與檢討……………………14
    2-6-1 案例分析之各項參數………………………………15
    2-6-2 傳統簡化分析模式之合理性與適用性……………16
    2-6-3 地梁下土壤彈簧個數之檢討………………………18
    第三章 筏式基礎之改良分析模式………………………………………19
    3-1 前言………………………………………………………………19
    3-2 改良後筏式基礎簡化分析模式之建立…………………………19
    3-2-1 Lum33簡化分析模式…………………………………19
    3-2-2 Lum31簡化分析模式…………………………………20
    3-2-3 R31簡化分析模式……………………………………21
    3-3 數值分析之結果與檢討…………………………………………22
    3-3-1 各類型簡化分析模式對地梁變位及彎矩之影響……23
    3-3-2 不同短、長邊尺寸比值m對地梁彎矩之影響………28
    3-3-3 地盤反力係數對地梁彎矩之影響……………………28
    第四章 筏基版設計方法
    4-1 前言………………………………………………………………31
    4-2 筏基版設計方法之建立…………………………………………31
    4-2-1 筏式基礎有限元素分析模式之建立…………………31
    4-2-2 數值分析之各項參數…………………………………32
    4-2-3 彎矩係數值之建立……………………………………33
    4-3 筏基版設計之彎矩係數表………………………………………34
    第五章 結論與建議………………………………………………………35
    5-1 結論………………………………………………………………35
    5-2 建議………………………………………………………………37
    參考文獻…………………………………………………………………39
    表…………………………………………………………………………41
    圖…………………………………………………………………………72
    Reference 1. 柯鎮洋、梁敬順(民國77年),聯合基礎與筏式基礎之設計方法(上),結構工程,第三卷,第53期,7月p65-80
    2. ACI Committee 436 Report(1966), "Suggested Design Procedures for Combined Footing and Mat" ,ACI Journal Oct.
    3. 劉俊秀,賴憲樟,「筏式基礎之分析」,碩士論文,國立交通大學土木工程研究所,新竹,1994年
    4. Terzaghi,K. (1955), "Evaluation of coefficients of subgrade reaction",  Geotechnigue, vol 5, no 4, pp297-326
    5. Vesic,A.B. (1961), "Bending of beams resting on isotropic elastic solid ", Journal of the engineering mechanics division-ASCE, vol 87, iss 2, pp35-53
    6. Bowles,J.E. (1992), Foundation analysis and design, 3rd Ed, McGraw-Hill Book Co., Inc, New work,N.Y.
    7. Habibullah, A. (1991), SAFE - Slab Analysis by the Finite Element Method, Computers and Structures, Inc., Berkeley, California.
    8. Zienkiewicz, O.C. "The Finite Element Method in Engineering Science," McGraw-Hill, London, 1971.
    9. Zienkiewicz, O.C., Cheung, Y.K. "The Finite Element Method for Analysis of Elastic, Isotropic and Orthotropic Slabs" Proceeding of the Institute of Civil Engineering, 1964.
    10. Hughes, T.J.R.,Tezduyar,T.E. "Finite Element Based upon Mindlin Plate Theory with Particular Reference to the Four Node Bilinear Isoparametric Element," Stanford University, Palo Alto, California, September 1980.
    Advisor
  • (莊德興)
  • Files No Any Full Text File.
    Date of Submission

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