已知圖示結(jié)構(gòu)EI=常數(shù),當(dāng)B點(diǎn)水平位移為零時(shí),P1/P2應(yīng)為:()
A.10/3 B.9/2 C.20/3 D.17/2
圖示結(jié)構(gòu),各桿EI、EA相同,K、H兩點(diǎn)間的相對(duì)線位移為:()
A.Pa3/6EI(←→) B.Pa3/4EI(←→) C.Pa3/3EI(←→) D.Pa3/3EI(→←)
圖示結(jié)構(gòu)當(dāng)E點(diǎn)有P=1向下作用時(shí),B截面產(chǎn)生逆時(shí)針轉(zhuǎn)角φ,則當(dāng)A點(diǎn)有圖示荷載作用時(shí),E點(diǎn)產(chǎn)生的豎向位移為:()
A.φ↑ B.φ↓ C.φa↑ D.φa↓