1、渝湘高速公路F1合同段圆型墩盖梁支架计算 F1合同段有五座大桥,根据图纸说明,其中K2+139田坝大桥盖梁几何尺寸为砼自重最大为37.2m3,以该桥计算为例。一、结构简图二、结构计算1、小分配梁计算A、荷载计算荷载P1=砼自重+模板自重+支架自重+施工人员及小型机具砼自重:混凝土70.12m3,容重取26kN /m3;荷载70.1226=1823.1kN模板自重:取160kg/,荷载16015010/1000240kN小分配梁自重:小分配梁采用16,共30根荷载30417.210/100020.64kN施工人员及小型机具:取30KNP=1823.1+240+20.64+30=2113.74KN
2、线性荷载q2113.74/30/1.937.08kN/mB、强度计算M1/8ql21/837.081.9216.73KNmM/W16.73106/108.3103154.48MpaC、刚度计算挠度5ql4/384EI(537.0819004)/(3842.061058662000)3.52mm2、主梁计算A、荷载计算P2主梁取工40,自重2267.6210/100029.74kN斜撑取双肢16,自重(5.73+3.32)217.23110/100026.24kN计算荷载(2113.74+29.74+6.24)/2/2248.86kN/m计算图示主梁强度验算:最大负弯矩MaKMql20.1074
3、8.864.42101.21kNm应力M/W101.21106/108570093.22Mpa主梁刚度验算:最大挠度Kql4/100EI0.63248.8644004/(1002.05105217140000)2.6mm斜撑强度验算:主梁剪力VzKvql0.46448.864.499.75kNVyKvql0.46448.864.499.75kN支反力FVz+ Vy99.752199.5kN最大轴力N2F1.414199.5282.1kN应力N/A282.1103/(21952)64.26Mpa3、预埋件计算主梁预埋件荷载计算主梁剪力VzKvql0.60748.864.4130.5kNVyKvq
4、l0.53648.864.4115.23kN支反力FVz+ Vy130.5+115.23245.73kN斜撑预埋件荷载计算主梁剪力VzKvql0.46448.864.499.75kNVyKvql0.46448.864.499.75kN支反力FVz+ Vy99.752199.5kN取最大荷载VF245.73kN做为计算荷载预埋件如图所示锚筋为625,其布置如图所示剪力计算1.5As1fst1As2fst21.53490.92153490.9215791.58kNK1Vj1.55245.73380.88kN弯矩计算0.85h0 As1fst1=0.850.23490.921553.83kNmK2Mj1.50245.730.1347.92kNm预埋件安全