研究生: |
蕭輔俊 Xiao-Fu-Jun |
---|---|
論文名稱: |
鋼筋混凝土低矮型剪力牆強度之重新檢核 Re-examination of Strength of RC Squat Walls |
指導教授: |
鄭敏元
Min-Yuan Cheng |
口試委員: |
黃世建
Shyh-Jiann Hwang 李宏仁 Hung-Jen Lee 陳沛清 Pei-Ching Chen |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2019 |
畢業學年度: | 107 |
語文別: | 中文 |
論文頁數: | 148 |
中文關鍵詞: | 鋼筋混凝土 、剪力牆 、低矮牆 、剪力強度 、剪力模型 |
外文關鍵詞: | Reinforced concrete, Shear wall, Squat wall, Shear strength, Shear strength model |
相關次數: | 點閱:271 下載:11 |
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本研究藉由收蒐集過去國內外共138座低矮剪力牆試驗資料,將其整理成低矮剪力牆資料庫,觀察影響其試驗強度之測試參數,篩選出主要控制參數,再以此資料庫結果檢核評估ACI 318-14規範與過去學者所提出之剪力強度模型。
結果顯示高長比大於等於0.8試體,在剪應力需求小於0.83√f'c(MPa)為前提,似乎滿足規範對於低矮剪力牆的需求,試體強度可達到0.9Vmn。在高長比小於0.8試體中,試體剪應力需求小於0.83√f'c(MPa),仍有多數試體無法以撓曲強度主控,比對可能影響參數仍無法發現明確趨勢。
根據不同破壞機制假設,以兩種剪力強度模型評估試體強度,就本資料庫蒐集的所有試體而言,剪力強度模型min(Vn2,Vn5)評估試體最能反映試體剪力強度。
The research develops a database that collects results of 138 reinforced concrete (RC) low-rise walls tested previously in literature. The main objective is to investigate the design parameters that influence the specimen peak strength. Specimen peak strength is also evaluated by code-specified equations per ACI 318-14 and shear strength models proposed by previous researchers.
For specimens with aspect ratio greater than or equal to 0.8, analytical results indicate that specimen is capable of achieving Vmn if specimen shear stress demand is less than 0.83√f'c(MPa)and specimen is detailed in compliance with the ACI 318-14. For specimens with aspect ratio less than 0.8, most specimen peak strengths are lower than the nominal flexural strength and the trend is not clear regardless of the shear stress demand.
With the consideration of different failure mechanisms associated with the different shear strength models, the min{Vn2,Vn5} appears to provide the closest result for all test speimens collected in the database.
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