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    主线桥盖梁预应力张拉计算书secret.doc

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    主线桥盖梁预应力张拉计算书secret.doc

    主线桥盖梁预应力张拉计算书一、计算公式及参数:1、预应力平均张拉力计算公式及参数:式中:Pp预应力筋平均张拉力(N)P预应力筋张拉端的张拉力(N)X从张拉端至计算截面的孔道长度(m)从张拉端至计算截面的曲线孔道部分切线的夹角之和(rad)k孔道每米局部偏差对摩檫的影响系数预应力筋与孔道壁的摩檫系数2、预应力筋的理论伸长值计算公式及参数:式中:Pp预应力筋平均张拉力(N)L预应力筋的长度(mm)Ap预应力筋的截面面积(mm2)Ep预应力筋的弹性模量(N/ mm2)二、计算参数取值:1、K孔道每米局部偏差对摩檫的影响系数:取0.00152、预应力筋与孔道壁的摩檫系数:取0.223、Ap预应力筋的实测截面面积:140 mm24、Ep预应力筋实测弹性模量:1.98×105 N/ mm25、锚下控制应力:k=0.75Ryb=0.75×1860=1395 N/ mm26、单根钢绞线张拉端的张拉控制力:P1395×140=195300N7、千斤顶计算长度:34.5cm8、工作锚长度:5.5cm9、限位板计算长度:3cm10、工具锚计算长度:不计系数k及值表孔道成型方式k(钢绞线)预埋波纹管成型0.00150.200.25采用值0.00150.22三、张拉时理论伸长量计算:主线桥14东侧、531墩盖梁钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.18m=0rad kx+=0.0015×3.18=0.00477Pp=195300×(1-e-0.00477)/0.00477=194834.95N L= PpL/(Ap Ep)=194834.95×3.18×103/(140×1.98×105)=22.4mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194834.95NX=3.18m=318/1500=0.212rad kx+=0.0015×3.18+0.22×0.212=0.05141Pp=194834.95×(1-e-0.05141)/0.05141=189911.45N L= PpL/(Ap Ep)=189911.45×3.18×103/(140×1.98×105)=21.8mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=(189911.45+190013.74)/2=189963NX=2.942m=0rad kx+=0.0015×2.942=0.004413Pp=189963×(1-e-0.004413)/0.004413=189544.06N L= PpL/(Ap Ep)=189544.06×2.942×103/(140×1.98×105)=20.1mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=194819.62NX=3.103m=310.3/1500=0.2068667rad kx+=0.0015×3.103+0.22×0.2068667=0.050165Pp=194819.62×(1-e-0.050165)/0.050165=190013.74N L= PpL/(Ap Ep)=190013.74×3.103×103/(140×1.98×105)=21.3mm5、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.285m=0rad kx+=0.0015×3.285=0.004928Pp=195300×(1-e-0.004928)/0.004928=194819.62N L= PpL/(Ap Ep)=194819.62×3.285×103/(140×1.98×105)=23.1mm 盖梁两端工作锚间钢束理论伸长量:108.6mm6、单个千斤顶段伸长量(无管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.273m=0rad kx+=0.0015×3.273=0.0049095Pp=195300×(1-e-0.0049095)/0.0049095=194821.37N L= PpL/(Ap Ep)=194821.37×3.273×103/(140×1.98×105)=23mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194821.37NX=3.703m=370.3/1500=0.24687rad kx+=0.0015×3.703+0.22×0.24687=0.0598652Pp=195300×(1-e-0.0598652)/0.0598652=189104.51N L= PpL/(Ap Ep)=189104.51×3.703×103/(140×1.98×105)=25.3mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=(189104.51+189204.97)/2=189155NX=1.794m=0rad kx+=0.0015×1.794=0.002691Pp=189155×(1-e-0.002691)/0.002691=188900.41N L= PpL/(Ap Ep)=188900.41×1.794×103/(140×1.98×105)=12.2mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=194806.33N X=3.627m=3.627/1500=0.24180rad kx+=0.0015×3.627+0.22×0.24180=0.058637Pp=194806.33×(1-e-0.058637)/0.058637=189204.97N L= PpL/(Ap Ep)=189204.97×3.627×103/(140×1.98×105)=24.8mm5、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.376m=0rad kx+=0.0015×3.376=0.005064Pp=195300×(1-e-0.005064)/0.005064=194806.33N L= PpL/(Ap Ep)=194806.33×3.376×103/(140×1.98×105)=23.7mm 盖梁两端工作锚间钢束理论伸长量:109mm6、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 主线桥4墩西侧盖梁钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.852m=0rad kx+=0.0015×3.852=0.005778Pp=195300×(1-e-0.005778)/0.005778=194736.86N L= PpL/(Ap Ep)=194736.86×3.852×103/(140×1.98×105)=27.1mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194736.86NX=2.842m=284.2/1500=0.18947rad kx+=0.0015×2.842+0.22×0.18947=0.0459457Pp=194736.86×(1-e-0.0459457)/0.0459457=190330.94N L= PpL/(Ap Ep)=190330.94×2.842×103/(140×1.98×105)=19.5mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=(190330.94+189731.24)/2=190121NX=2.736m=0rad kx+=0.0015×2.736=0.004104Pp=190121×(1-e-0.004104)/0.004104=189544.06N L= PpL/(Ap Ep)=189544.06×2.736×103/(140×1.98×105)=18.7mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=194834NX=3.18m=318/1500=0.212rad kx+=0.0015×3.18+0.22×0.212=0.05141Pp=194834×(1-e-0.05141)/0.05141=189910.74N L= PpL/(Ap Ep)=189910.74×3.18×103/(140×1.98×105)=21.8mm5、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.185m=0rad kx+=0.0015×3.185=0.004778Pp=195300×(1-e-0.004778)/0.004778=194834.22N L= PpL/(Ap Ep)=194834.22×3.185×103/(140×1.98×105)=22.4mm 盖梁两端工作锚间钢束理论伸长量:109.5mm6、单个千斤顶段伸长量(无管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.90m=0rad kx+=0.0015×3.90=0.00585Pp=195300×(1-e-0.00585)/0.00585=194729.86N L= PpL/(Ap Ep)=194729.86×3.90×103/(140×1.98×105)=27.4mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194729.86NX=3.365m=336.5/1500=0.22433rad kx+=0.0015×3.365+0.22×0.22433=0.0544008Pp=194729.86×(1-e-0.0544008)/0.0544008=189527.88N L= PpL/(Ap Ep)=189527.88×3.365×103/(140×1.98×105)=23.0mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=(189527.88+189103.80)/2=189316NX=1.629m=0rad kx+=0.0015×1.629=0.0024435Pp=189316×(1-e-0.0024435)/0.0024435=189084.73N L= PpL/(Ap Ep)=189084.73×1.629×103/(140×1.98×105)=11.1mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=194820.64N X=3.703m=3.703/1500=0.24180rad kx+=0.0015×3.627+0.22×0.24180=0.059865Pp=194820.64×(1-e-0.059865)/0.059865=189103.8N L= PpL/(Ap Ep)=189103.8×3.703×103/(140×1.98×105)=25.3mm5、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.278m=0rad kx+=0.0015×3.278=0.004917Pp=195300×(1-e-0.004917)/0.004917=194820.64N L= PpL/(Ap Ep)=194820.64×3.278×103/(140×1.98×105)=23.0mm 盖梁两端工作锚间钢束理论伸长量:109.8mm6、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 主线桥3墩西侧盖梁钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=4.217m=0rad kx+=0.0015×4.217=0.0063255Pp=195300×(1-e-0.0063255)/0.0063255=194683.62N L= PpL/(Ap Ep)=194683.62×4.217×103/(140×1.98×105)=29.6mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194683.62NX=1.273m=127.3/600=0.21217rad kx+=0.0015×1.273+0.22×0.21217=0.0485862Pp=194683.62×(1-e-0.0485862)/0.0485862=190029.82N L= PpL/(Ap Ep)=190029.82×1.273×103/(140×1.98×105)=8.7mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=190029.82NX=2.818mkx+=0.0015×2.818=0.004227Pp=190029.82×(1-e-0.004227)/0.004227=189628.76N L= PpL/(Ap Ep)=189628.76×2.818×103/(140×1.98×105)=19.3mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=(189628.76+188774.86)/2=189202NX=0.386m=38.6/600=0.06433rad kx+=0.0015×0.386+0.22×0.06433=0.014732Pp=195300×(1-e-0.0147732)/0.014732=187814.94N L= PpL/(Ap Ep)=187814.94×0.386×103/(140×1.98×105)=2.6mm5、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=189156.11NX=2.691mkx+=0.0015×2.691=0.004037Pp=189156.11×(1-e-0.004037)/0.004037=188774.86N L= PpL/(Ap Ep)=188774.86×2.691×103/(140×1.98×105)=18.3mm 6、DE段伸长量:单根钢绞线张拉的张拉力P=194703.31NX=1.522m=152.2/600=0.25367rad kx+=0.0015×1.522+0.22×0.25367=0.058090Pp=194703.31×(1-e-0.058090)/0.058090=189156.11N L= PpL/(Ap Ep)=189156.11×1.522×103/(140×1.98×105)=10.4mm7、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=4.082mkx+=0.0015×4.082=0.006123Pp=195300×(1-e-0.006123)/0.006123=194703.31N L= PpL/(Ap Ep)=194703.31×4.082×103/(140×1.98×105)=28.7mm 盖梁两端工作锚间钢束理论伸长量:117.6mm8、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=4.088m=0rad kx+=0.0015×4.088=0.006132Pp=195300×(1-e-0.006132)/0.006132=194702.43N L= PpL/(Ap Ep)=194702.43×4.088×103/(140×1.98×105)=28.7mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194702.43NX=1.605m=160.5/600=0.02675rad kx+=0.0015×1.605+0.22×0.02675=0.0612575Pp=194702.43×(1-e-0.0612575)/0.0612575=188858.87N L= PpL/(Ap Ep)=188858.87×1.605×103/(140×1.98×105)=10.9mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=188858.87NX=2.529mkx+=0.0015×2.529=0.0037935Pp=188858.87×(1-e-0.0037935)/0.0037935=188501.10N L= PpL/(Ap Ep)=188501.10×2.529×103/(140×1.98×105)=17.2mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=(188501.10+187664.64)/2=188083NX=0.629m=62.9/600=0.10483rad kx+=0.0015×0.629+0.22×0.10483=0.024007Pp=188083×(1-e-0.024007)/0.024007=185843.19N L= PpL/(Ap Ep)=185843.19×0.629×103/(140×1.98×105)=4.2mm5、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=188003.77NX=2.408mkx+=0.0015×2.408=0.003612Pp=188003.77×(1-e-0.003612)/0.003612=187664.64N L= PpL/(Ap Ep)=187664.64×2.408×103/(140×1.98×105)=16.3mm 6、DE段伸长量:单根钢绞线张拉的张拉力P=194722.86NX=1.851m=185.1/600=0.30850rad kx+=0.0015×1.851+0.22×0.30850=0.070647Pp=195300×(1-e-0.070647)/0.070647=188003.77N L= PpL/(Ap Ep)=188003.77×1.851×103/(140×1.98×105)=12.6mm7、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.948mkx+=0.0015×3.948=0.005922Pp=195300×(1-e-0.005922)/0.005922=194722.86N L= PpL/(Ap Ep)=194722.86×3.948×103/(140×1.98×105)=27.7mm 盖梁两端工作锚间钢束理论伸长量:117.7mm8、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 主线桥2墩西侧盖梁钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.943m=0rad kx+=0.0015×3.943=0.0059145Pp=195300×(1-e-0.0059145)/0.0059145=194723.59N L= PpL/(Ap Ep)=194723.59×3.943×103/(140×1.98×105)=27.7mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194723.59NX=1.813m=181.3/600=0.30217rad kx+=0.0015×1.813+0.22×0.30217=0.0691962Pp=194723.59×(1-e-0.0691962)/0.0691962=188139.26N L= PpL/(Ap Ep)=188139.26×1.813×103/(140×1.98×105)=12.3mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=188139.26NX=2.812mkx+=0.0015×2.812=0.004218Pp=188139.26×(1-e-0.004218)/0.004218=188743.04N L= PpL/(Ap Ep)=188743.04×2.755×103/(140×1.98×105)=19.0mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=(188743.04+187118.44)/2=187431NX=1.401m=140.1/600=0.2335rad kx+=0.0015×1.401+0.22×0.2335=0.053472Pp=187431×(1-e-0.053472)/0.053472=182507.77N L= PpL/(Ap Ep)=182507.77×1.401×103/(140×1.98×105)=9.2mm5、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=187502.67NX=2.736mkx+=0.0015×2.736=0.004104Pp=187502.67×(1-e-0.004104)/0.004104=187118.44N L= PpL/(Ap Ep)=187118.44×2.736×103/(140×1.98×105)=18.5mm 6、DE段伸长量:单根钢绞线张拉的张拉力P=194739.05NX=1.997m=199.7/600=0.33283rad kx+=0.0015×1.997+0.22×0.33283=0.076219Pp=194739.05×(1-e-0.076219)/0.076219=187502.67N L= PpL/(Ap Ep)=187502.67×1.997×103/(140×1.98×105)=13.5mm7、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.837mkx+=0.0015×3.837=0.005756Pp=195300×(1-e-0.005756)/0.005756=194739.05N L= PpL/(Ap Ep)=194739.05×3.837×103/(140×1.98×105)=27.0mm 盖梁两端工作锚间钢束理论伸长量:127.2mm8、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.892m=0rad kx+=0.0015×3.892=0.005838Pp=195300×(1-e-0.005838)/0.005838=194731.03N L= PpL/(Ap Ep)=194731.03×3.892×103/(140×1.98×105)=27.3mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194731.03NX=1.988m=198.8/600=0.33133rad kx+=0.0015×1.988+0.22×0.33133=0.0758753Pp=194731.03×(1-e-0.0758753)/0.0758753=187526.74N L= PpL/(Ap Ep)=187526.74×1.988×103/(140×1.98×105)=13.4mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=187526.74NX=2.755mkx+=0.0015×2.755=0.0041325Pp=187526.74×(1-e-0.0041325)/0.0041325=187139.80N L= PpL/(Ap Ep)=187139.80×2.755×103/(140×1.98×105)=18.6mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=(187139.80+186521.87)/2=186831NX=1.332m=133.2/600=0.222rad kx+=0.0015×1.332+0.22×0.222=0.050838Pp=186831×(1-e-0.050838)/0.050838=182161.25N L= PpL/(Ap Ep)=182161.25×1.332×103/(140×1.98×105)=8.8mm5、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=186896.89NX=2.679mkx+=0.0015×2.679=0.004019Pp=186896.89×(1-e-0.004019)/0.004019=186521.87N L= PpL/(Ap Ep)=186521.87×2.679×103/(140×1.98×105)=18.0mm 6、DE段伸长量:单根钢绞线张拉的张拉力P=194746.93NX=2.171m=217.1/600=0.36183rad kx+=0.0015×2.171+0.22×0.36183=0.08286Pp=194746.93×(1-e-0.08286)/0.08286=186896.89N L= PpL/(Ap Ep)=186896.89×2.717×103/(140×1.98×105)=14.6mm7、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=3.783mkx+=0.0015×3.783=0.005675Pp=195300×(1-e-0.005675)/0.005675=194746.93N L= PpL/(Ap Ep)=194746.93×3.783×103/(140×1.98×105)=26.6mm 盖梁两端工作锚间钢束理论伸长量:127.4mm8、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm主线桥1墩西侧盖梁钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=4.544m=0rad kx+=0.0015×4.544=0.006816Pp=195300×(1-e-0.006816)/0.006816=194635.93N L= PpL/(Ap Ep)=194635.93×4.544×103/(140×1.98×105)=31.9mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194635.93NX=1.963m=196.3/600=0.32717rad kx+=0.0015×1.963+0.22×0.32717=0.0749212Pp=194635.93×(1-e-0.07492122)/0.0749212=187523.48N L= PpL/(Ap Ep)=187523.48×1.963×103/(140×1.98×105)=13.3mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=187523.48NX=1.941mkx+=0.0015×1.941=0.0029115Pp=187523.48×(1-e-0.0029115)/0.0029115=187250.76N L= PpL/(Ap Ep)=187250.76×1.941×103/(140×1.98×105)=13.1mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=(187250.76+186670.60)/2=186961NX=2.809m=280.9/600=0.46817rad kx+=0.0015×2.809+0.22×0.46817=0.107210Pp=186961×(1-e-0.107210)/0.107210=177287.39N L= PpL/(Ap Ep)=177287.39×2.809×103/(140×1.98×105)=18.0mm5、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=186934.35NX=1.883mkx+=0.0015×1.883=0.002825Pp=186934.35×(1-e-0.002825)/0.002825=186670.60N L= PpL/(Ap Ep)=186670.60×1.883×103/(140×1.98×105)=12.7mm 6、DE段伸长量:单根钢绞线张拉的张拉力P=194650.36NX=2.134m=213.4/600=0.35567rad kx+=0.0015×2.134+0.22×0.35567=0.081448Pp=194650.36×(1-e-0.081448)/0.081448=186934.35N L= PpL/(Ap Ep)=186934.35×2.134×103/(140×1.98×105)=14.4mm7、EF段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=4.445mkx+=0.0015×4.445=0.006668Pp=195300×(1-e-0.006668)/0.006668=194650.36N L= PpL/(Ap Ep)=194650.36×4.445×103/(140×1.98×105)=31.2mm 盖梁两端工作锚间钢束理论伸长量:134.5mm8、单个千斤顶段伸长量(不考虑管道摩阻力):P=0.75×1860×140=195300NX=0.345+0.55+0.30.43mL= PpL/(Ap Ep)=195300×0.43×103/(140×1.98×105)=3mm 钢束1、AB段伸长量:(直线段0)单根钢绞线张拉的张拉力P=0.75×1860×140=195300NX=4.475m=0rad kx+=0.0015×4.475=0.0067125Pp=195300×(1-e-0.0067125)/0.0067125=194645.99N L= PpL/(Ap Ep)=194645.99×4.475×103/(140×1.98×105)=31.4mm 2、BC段伸长量:单根钢绞线张拉的张拉力P=194645.99NX=2.169m=216.9/600=0.36150rad kx+=0.0015×2.169+0.22×0.36150=0.0827835Pp=194645.99×(1-e-0.0827835)/0.0827835=186807.05N L= PpL/(Ap Ep)=186807.05×2.169×103/(140×1.98×105)=14.6mm 3、CD段伸长量:(直线段0)单根钢绞线张拉的张拉力P=186807.05NX=1.84mkx+=0.0015×1.84=0.00276Pp=186807.05×(1-e-0.00276)/0.00276=186549.49N L= PpL/(Ap Ep)=186549.49×1.84×103/(140×1.98×105)=12.4mm 4、DE段伸长量:单根钢绞线张拉的张拉力P=(186549.49+185979.57)/2=186265NX=2.798m=279.8/600=0.46633rad kx+=0.0015×2.798+0.22×0.46633=0.10679Pp=186265×(1-e-0.10679)/0.10679=176663.68N L= PpL/(Ap Ep)=176663.68×2.798×103/(140×1.98×105)=17.8mm5、CD段伸长量:(直线段0)单根

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