鋼結(jié)構(gòu)規(guī)范中,關(guān)于腹桿的計(jì)算長(zhǎng)度L0,桁架弦桿和單系腹桿平面內(nèi)的長(zhǎng)度取L和0.8L,,但交叉腹桿長(zhǎng)度為一半(空腹桁架實(shí)腹桁架優(yōu)缺點(diǎn)) ...