20米空心板预应力张拉后张法计算书

中: P——油压表读数(MPa)РF——千斤顶拉力(KN)РP=σcon=806.98KN时,Р(1) 10%σcon=80.698kN 时РP=0.052802F+0.909249 =0.052802×80.698+0.909249=5.170MPaР(2)15%σcon=121.047kN 时:РP=0.052802F+0.909249 =0.052802×121.047+0.909249=7.300MPaР(3) 20%σcon=161.392kN 时:РP=0.052802F+0.909249 =0.052802×161.392+0.909249=9.432MPaР(4)100%σcon= 806.979kN 时:РP=0.052802F+0.909249 =0.052802×806.979+0.909249=43.519MPР4、6275 号千斤顶张拉、0615号油表:Р千斤顶回归方程:РP=0.052950F+0.999422Р式中: P——油压表读数(MPa)РF——千斤顶拉力(KN)РP=σcon=806.98KN时,Р(1) 10%σcon=80.698kN 时РP=0.052950F+0.999422 P=0.052950×80.698+0.999422=5.272MPР(2)15%σcon=121.047kN 时:РP=0.052950F+0.999422 P=0.052950×121.047+0.999422=7.409MPР(3) 20%σcon=161.392kN 时:РP=0.052950F+0.999422 P=0.052950×161.392+0.999422=9.545MPР(4)100%σcon= 806.979kN 时:РP=0.052950F+0.999422 P=0.052950×806.979+0.999422=43.729MP