圖示剛架,已求得B點(diǎn)轉(zhuǎn)角φB=0.717/i(順時(shí)針),C點(diǎn)水平位移△C=7.579/i(→),則MAB =(),MDC=()
圖示排架結(jié)構(gòu),橫梁剛度為無窮大,各柱EI相同,則FN2=()
圖示結(jié)構(gòu)用位移法求解時(shí)典型方程的系數(shù)r22為()