某架空輸電線路,檔距1200,懸點(diǎn)高差h=120,最高氣溫時(shí)導(dǎo)線最低點(diǎn)應(yīng)力σ0=60N/mm2,自重比載γ1=2.5×10-2N/m.mm2
A.15.2° B.16.3° C.18.7° D.19.29°
A.72.5m B.80.15m C.75.37m D.81.23m
A.1220.67m B.1218.46m C.1230.22m D.1211.55m