請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/9060
標題: | 偏心梁柱接頭之剪力強度預測 Shear Strength Prediction of Eccentric Beam-Column Joints Using Softened Strut-and-Tie Model |
作者: | Lim Erwin 林孝勇 |
指導教授: | 黃世建(Hwang, Shyh Jiann) |
關鍵字: | null, eccentric beam-column joint,effective joint width,shear strength,softened strut-and-tie, |
出版年 : | 2009 |
學位: | 碩士 |
摘要: | Several studies showed that the eccentricity between beam and column connections has a detrimental effect on the joint shear strength. With regard to this issue, current ACI 318-08 code restricts the average shear stress on a horizontal plane within the joint, which equals to the effective joint width times column depth. The formula of effective joint width given in ACI 318-08 may be too conservative for eccentric beam-column joints.
This thesis suggests a more rational formula of effective joint width associated with the softened strut-and-tie (SST) model for eccentric beam-column joints. Using the proposed effective joint width, the shear strength predictions of SST model agreed well with the results of 18 eccentric joint specimens failed in shear. Several available definitions of effective joint width are also used together with proposed effective joint width to estimate joint shear strength using the average joint shear stress limits given in ACI 318-08 design equation. This combination was successfully verified with available 126 beam-column joints with or without eccentricity in literature. Analysis shows that proposed effective joint width can well predict joint shear strength of eccentrically connected beam-column joints and preserves the accuracy of current adopted effective joint width in ACI 318-08. Furthermore, some sensitivity analysis are performed to justify several assumptions. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/9060 |
全文授權: | 同意授權(全球公開) |
顯示於系所單位: | 土木工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-98-1.pdf | 1.28 MB | Adobe PDF | 檢視/開啟 |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。