臺灣博碩士論文加值系統

本文主要在以有限元素法分析方式探討開孔之鋼筋混凝土正方形版受均佈載重時，對其破壞載重、撓度及降伏線之影響。在分析上，討論開孔之大小、位置、形狀、支承端型式對鋼筋混凝土版產生之影響，並分析在雙開孔行為下，是否可視作單一大開孔來設計。由分析結果顯示，開孔之大小有一最小破壞載重及最大彈性撓度的臨界值，且開孔之位置及形狀皆會對其降伏線產生影響。而在雙開孔之行為上，可以視作一中央大開孔來簡化設計。

The thesis was conducted to study the failure loads, displacement and yielding line patterns of square reinforced concrete slab with openings. The slab is subjected to an uniform load. The influences of changing the size of openings, the location of opening and bearing type were investigated. Furthermore, the difference between two openings and one big opening with total area of the two openings is also investigated.
From the result of the investigations, several conclusions can be made as follows.
(1) The size of opening affects the failure load and displacement.
(2) There is a critical size of opening which makes failure load minimum and displacement maximum.
(3) If the location of opening moves from center to corner of the plate, failure load will increase and displacement will decrease.
(4) Two openings can be simplified into one big opening with equal area.

目錄
中文摘要………………………………………………………………….i
英文摘要…………………………………………………………………ii
誌謝……………………………………………………………………...iii
目錄………………………………………………………………….…..iv
表目錄…………………………………………………………………..iv
圖目錄……………………………………………………………………v
第一章 緒論……………………………………………………………..1
1-1 前言……………………………………………………………....1
1-2 研究動機…………………………………………………………1
1-3 研究大綱…………………………………………………………2
第二章 文獻回顧………………………………………………………..3
2-1 文獻回顧…………………………………………………………..3
2-2 降伏線法…………………………………………………………..4
2-3 樓版相關設計規範………………………………………………..7
第三章 有限元素法模型介紹…………………………………………..9
3-1 結構體的基本公式………………………………………………9
3-2 Shell 43元素之簡介…………………………………………….12
3-3 鋼筋混凝土應力應變曲線……………………………………...17
第四章 收斂性之探討………………………………………………....21
4-1 版殼元素切割方式……………………………………………..21
4-2 有限元素法分析與降伏線法之比較…………………………..22
4-3 有限元素法分析與實際實驗之比較…………………………..23
第五章 開口樓版之分析………………………………………………27
5-1 開孔大小對版的影響………………………………………….. 27
5-2 簡支承時開孔位置的影響……………………………………...30
5-3 固定支承端時開孔位置之影響………………………………...31
5-4 開孔形狀對平版之影響………………………………………...33
5-5 雙開孔版之分析………………………………………………...36
第六章 結論與建議……………………………………………………38
6-1 結果討論………………………………………………………..38
6-2 建議……………………………………………………………..39
參考文獻………………………………………………………………..40
附表……………………………………………………………………..44
附圖……………………………………………………………………..52

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