米T梁张拉力附伸长量计算

长量:艿(775.62*1.193*0.984*10)/(139*4*1.95)+(775.62*0.984*1.587*10)/(139*4*1.95)+(775.62*5.367*0.984*10)/(139*4*1.95))=8.4+11.2+37.8=57.4mm羆T3一端伸长量:肄(775.62*1.193*0.984*10)/(139*4*1.95)+(775.62*0.984*1.587*10)/(139*4*1.95)+(775.62*2.367*0.984*10)/(139*4*1.95))=8.4+11.2+16.7=36.3mm肃T1钢束单端延伸量△L=78.5mm,取90%为71mm,图纸设计伸长量:78mm芁T2钢束单端延伸量△L=57.4mm,取90%为52mm,图纸设计伸长量:53mm莈T3钢束单端延伸量△L=36.3mm,取90%为33mm,图纸设计伸长量:36mm薄(3)8孔正弯矩预应力束的直线段和曲线段数据表袄预应力编号肈直线段长度(L1)米蒆曲线段长度(L2)米羃直线段长度(L3)米莀N1腿2.197薅7.330莂10.205肀N2芁1.096羇11.782肆6.881袁N3羈2.196肅16.797蒅0.782薁N4聿5.876莈12.597羅1.323节如下图所示:膁薆莄N1一端伸长量计算:肂PP=P*(1-e-0.028)/0.028=0.986P羈N1一端伸长量:衿(1551.2*2.197*0.986*10)/(139*8*1.95)+(1551.2*0.986*7.333*10)/(139*8*1.95)+(1551.2*0.986*10.205*10)/(139*8*1.95)=15.5+51.7+71.98=139.2mm螃N2一端伸长量计算:螂PP=P*(1-e-0.033)/0.033=0.984P羀N2一端伸长量: