Field Investigation And Performance Criterion Of Steel Couplers

• Main Authors: Chen Sam Min, 陳三民
• Other Authors: Chen Cheng Cheng;Sheen Jin Far
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/36104718184724057948

碩士 === 國立臺灣科技大學 === 營建工程技術學系 === 84 === In this study, field as well as laboratory investigation of steel couplers are carried out. In addition, a localized inspection standard of steel couplers is established. Field investigation, including market observation,reveals that:(1)the quality of steel couplers commonly used is poor ,(2)unclear inspection standard results in unfair competion between steel couplers is desired. Based on the requirement of design codes,a localized ins pection standard is estabished,and the influence of steel coulpers to R.C. members are discussed. Loading tests of beams, which include steel coulpers,are carried out in the laboratory to study their behavior.It is found that crack width of the beams under service condition is closely relatted to the amount of slipage of steel coupl ers.The larger the slipage, the wider the cracks. Designs should pay attenion this phenomena, and minimize its impact in reducing the durability of R.C. members.