圖示結(jié)構(gòu),當(dāng)支座B發(fā)生沉降△時,支座B處梁截面的轉(zhuǎn)角大小為()
A.(6/5)(△/l) B.(6/7)(△/l) C.(3/5)(△/l) D.(3/7)(△/l)
圖不結(jié)構(gòu),EI=常數(shù),已知結(jié)點C的水平線位移為ACH=7ql4/184EI(→),則結(jié)點C的角位移φc應(yīng)為:()
A.ql3/46EI(順時針向) B.-ql3/46EI(逆時針向) C.3ql3/92EI(順時針向) D.-3ql3/92EI(逆時針向)
圖示連續(xù)梁,EI=常數(shù),已知支承B處梁截面轉(zhuǎn)角為-7Pl2/240EI(逆時針向),則支承C處梁截面轉(zhuǎn)角φc應(yīng)為()
A.Pl2/60EI B.Pl2/120EI C.Pl2/180EI D.Pl2/240EI