图 [tex=2.286x1.143]CSham/vPIP0iNbtoEXmen+wgEPesQ3V6WpoACfeAWJE=[/tex] 所示的刚架自重不计。已知 [tex=14.571x1.571]0QSXQtXu19o7WkYPQgZWBqgZbtBOxnZbWawClR15Q3VRTSyoLb5ixxaCbfFKrase0OfKjV+Ew1BBfp5Os2vKxsQF15Kw86r0yJZgDqq1yMAEtqPFD7hmDJZNf+2zaWJl[/tex], [tex=2.0x1.214]Jup0ChK5Oj/wyQ52yLmQHQ==[/tex] 为光滑铰链。试求支座 [tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex] 的约束力。[img=979x521]179d239df1f30e4.png[/img]

图 [tex=2.286x1.143]CSham/vPIP0iNbtoEXmen+wgEPesQ3V6WpoACfeAWJE=[/tex] 所示的刚架自重不计。已知 [tex=14.571x1.571]0QSXQtXu19o7WkYPQgZWBqgZbtBOxnZbWawClR15Q3VRTSyoLb5ixxaCbfFKrase0OfKjV+Ew1BBfp5Os2vKxsQF15Kw86r0yJZgDqq1yMAEtqPFD7hmDJZNf+2zaWJl[/tex], [tex=2.0x1.214]Jup0ChK5Oj/wyQ52yLmQHQ==[/tex] 为光滑铰链。试求支座 [tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex] 的约束力。[img=979x521]179d239df1f30e4.png[/img]