Analysis of Dynamic Characteristics of R.C. Frames Infilled with Brick Walls

• Main Authors: Y. K. Liang, 梁益桄
• Other Authors: G. C. Yao
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/99501603748902953702

碩士 === 國立成功大學 === 建築研究所 === 83 === This thesis investigates the changes of dynamic characteristics （natural frequency,damping ratio and mode shapes ）of 4m × 3.2m R.C.frames infilled with brick walls,with five different kinds of opening , under monotonic and reversed cyclic ultimate horizontal loadings . Numerical and experimental methods are used to analyze the frames.Firstly, the frame is treated as a SDOF system and its natural frequency is analyzed. Secondly, SAP90 program is used to analyze the natural frequency and mode shapes of the frame.Finally, by using quick-release vibration testing method ,the dynamic characteristics are found.Also studied is the application of system identification ,especially the Strain Mode Shape （ SMS ） and the Moment Mode Shape （ MMS ） . This thesis also presents the interaction of R.C. frames and brick walls. According to the data analyzed by the numerical and experimental methods,a preliminary study on the loading history compared to the ultimate horizontal loads of R.C. frames can be predicted by the measured natural frequency in small excitation.