40米T梁中跨N1钢束伸长量计算
钢绞线根数:n=7根 1、 张拉力计算
钢绞线强度:Ryb1860Mpa
钢绞线截面积:Ag(140140140)/3140mm2 钢绞线弹性模量:E(195195195)/3195Gpa
张拉力:NRyb0.75Agn18600.7514071367.1KN 系数:k0.0015、u0.25 2、 分段终点力计算
AB BC CD
3、 伸长量计算
x(m) 3.796 14.809 1.045 (rad) 0 0.1653 0 kxu 0.005694 0.063539 0.001568 e(kxu) 0.994322 0.938438 0.998434 终点力(KN) 1359.34 1275.65 1273.66 LABLBCLCD1367.13.79610.99430.0272m
71401950.005691359.3414.80910.93840.1021m
71401950.0635391275.71.04510.99840.0071m 71401950.00157L0.02720.10210.00710.1364m
N1钢束总伸长量:L20.13640.2728m 与设计伸长值差:27.28-27.50=-0.22cm
40米T梁中跨N2钢束伸长量计算
钢绞线根数:n=7根 1、 张拉力计算
钢绞线强度:Ryb1860Mpa
140140140140mm2
3194196198钢绞线弹性模量:E195Gpa
3钢绞线截面积:Ag张拉力:NRyb0.75Agn18600.7514071367.1KN 系数:k0.0015、u0.25 2、分段终点力计算
AB BC CD
3、伸长量计算
x(m) 4.701 10.966 3.983 (rad) 0 0.15731 0 kxu 0.0070515 0.055776 0.005975 e(kxu) 0.992973 0.945751 0.994043 终点力(KN) 1357.49 1283.85 1276.20 LABLBCLCD1367.14.70110.99300.03339m
71401950.007051357.510.96610.94580.07569m
71401950.055771283.93.98310.99390.02685m 71401950.00598L0.033390.075690.026850.1360m
N2钢束总伸长量:L20.13600.2720m 与设计伸长值差:27.20-27.30=-0.10cm
40米T梁中跨N3钢束伸长量计算
钢绞线根数:n=7根 1、 张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.7514071367.1KN 2、 分段终点力计算
AB BC CD DE EF 3、伸长量计算
x(m) 2.844 8.678 0.9145 0.9145 6.299 (rad) 0 0.17443 0.13102 0.13102 0 kxu 0.00427 0.05662 0.03413 0.03413 0.00945 e(kxu) 0.99574309 0.94494925 0.96644855 0.96644855 0.99059600 终点力(KN) 1361.28 1286.341 1243.182 1201.472 1190.173 LABLBCLCDLDELEF1367.12.84410.99570.0205m
71401950.004271361.288.67810.94500.0600m
71401950.056621286.340.914510.96640.0061m
71401950.034131243.180.914510.96640.0059m
71401950.034131201.476.29910.99060.0394m
71401950.00945L0.02050.06000.00610.00590.03940.1319
N3钢束总伸长量:L20.13190.2638m 与设计伸长值差:26.38-26.5=-0.12cm
40米T梁中跨N4钢束伸长量计算
钢绞线根数:n=7根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.7514071367.1KN 2、 分段终点力计算
AB BC CD DE EF FG 3、伸长量计算
x(m) 1.504 5.355 1 0.9145 0.9145 9.962 (rad) 0.0000 0.2159 0.0000 0.1310 0.1310 0.0000 kxu 0.00226 0.06200 0.00150 0.03413 0.03413 0.01494 e(kxu) 0.99774654 0.93988469 0.99850112 0.96644855 0.96644855 0.98516809 终点力(KN) 1364.02 1282.02 1280.10 1237.15 1195.64 1177.91 LABLBCLCDLDELEFLEF1367.11.50410.99770.0109m
71401950.002261364.025.35510.939880.0371m
71401950.062001282.021.010.99850.0067m 71401950.001501280.10.914510.96640.0060m
71401950.034131237.150.914510.96640.0058m
71401950.034131195.649.96210.98520.0617m
71401950.01494L0.01090.03710.00670.00600.00580.06170.1282m
总伸长量:20.12820.2564m 与设计伸长值差:25.64-25.80=-0.16cm
40米T梁边跨N1钢束伸长量计算
钢绞线根数:n=9根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.7514091757.7KN 2、分段终点力计算
AB BC CD
3、伸长量计算
x(m) (rad) 4.868 0 kxu 0.00730 0.05414 0.00506 e(kxu) 0.99272459 0.94730415 0.99495776 终点力(KN) 1744.91 1652.96 1644.63 FE ED x(m) (rad) 3.796 14.809 0 0.1653 kxu 0.00569 0.06354 e(kxu) 0.99432218 0.938437957 终点力(KN) 1747.72 1640.13 12.627 0.140778 3.37 0 1757.74.86810.99270.03483m
91401950.007301744.9112.62710.9473LBC0.08729m
91401950.054141652.963.3710.9950LCD0.0224m
91401950.005061757.73.79610.9943LFE0.0272m
91401950.005691747.7214.80910.9384LED0.1021m
91401950.06354LAB总伸长量: L0.03483+0.08729+0.0224+0.0272+0.1021=0.2738m 与设计伸长值差:27.38-27.50=-0.12cm
40米T梁边跨N2钢束伸长量计算
钢绞线根数:n=9根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.7514091757.7KN 2、分段终点力计算 AB BC CD x(m) (rad) 4.325 9.697 7.231 0 0.138981 0 kxu 0.00649 0.04929 0.01085 e(kxu) 0.99353350 0.95190443 0.98921211 终点力(KN) 1746.33 1662.34 1644.41 GF FE ED x(m) (rad) 4.701 0 kxu 0.00705 0.05578 0.00383 e(kxu) 0.9929733 0.94575131 0.99618231 终点力(KN) 1745.35 1650.67 1644.36 10.966 0.157307 2.55 0 3、伸长量计算
1757.74.32510.99350.03099m
91401950.006491746.339.69710.95190LBC0.06791m
91401950.049291662.347.23110.9892LCD0.04869m
91401950.010851757.74.70110.9930LGF0.03340m
91401950.007051745.3510.96610.9458LFE0.07570m
91401950.055781650.672.5510.9962LED0.01700m
91401950.00383LAB总伸长量: L0.03099+0.06791+0.04869+0.03340+0.07570+0.01700=0.2737m 与设计伸长值差:27.37-27.40=-0.03cm
40米T梁边跨N3钢束伸长量计算
钢绞线根数:n=9根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.7514091757.7KN 2、分段终点力计算
AB BC CD DE EF
3、伸长量计算
x(m) (rad) 2.627 7.082 0 0.142122 kxu 0.003941 0.046154 0.034127 0.034127 0.016322 e(kxu) 0.99606725 0.95489534 0.96644855 0.96644855 0.98381097 终点力(KN) 1750.79 1671.82 1615.73 1561.52 1536.24 KJ JI IH HG GF x(m) (rad) 2.844 8.678 0.9145 0.9145 3.7 0 0.17443 0.13102 0.13102 0 kxu 0.004266 0.056624 0.034127 0.034127 0.005550 e(kxu) 0.99574309 0.94494925 0.96644855 0.96644855 0.99446537 终点力(KN) 1750.22 1653.87 1598.38 1544.75 1536.20 0.9145 0.131022 0.9145 0.131022 10.881 0 1757.72.62710.996070.01860m
91401950.003941750.797.08210.95490LBC0.04932m
91401950.046151671.820.914510.96645LCD0.00612m
91401950.0034131615.730.914510.96645LDE0.00591m
91401950.0034131561.5210.88110.98381LEF0.06859m
91401950.0163221757.72.84410.99574LKJ0.02032m
91401950.0042661750.228.67810.94495LJI0.06010m
91401950.0566241653.870.914510.96645LIH0.00605m
91401950.0034131598.380.914510.96645LHG0.00585m
91401950.0034131544.753.710.99446LGF0.02322m
91401950.00555LAB总伸长量: L0.01860+0.04932+0.00612+0.00591+0.06859++0.02032+0.06010+0.00605+0.00585+0.02322=0.2641m 与设计伸长值差:26.41-26.50=-0.09cm
40米T梁边跨N4钢束伸长量计算
钢绞线根数:n=9根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.7514091757.7KN 2、分段终点力计算
AB BC CD DE EF FG x(m) (rad) 2.719 2.872 0.30 0 0.115157 0 kxu 0.004079 0.033097 0.000450 0.034127 0.034127 0.030618 e(kxu) 0.99592981 0.96744451 0.99955010 0.96644855 0.96644855 0.96984598 终点力(KN) 1750.55 1693.56 1692.79 1636.00 1581.11 1533.43 ML LK KJ JI IH HG x(m) (rad) 1.504 5.355 1.00 0 0.215862 0.00 kxu 0.0022560 0.0619981 0.0015000 0.0341272 0.0341272 0.0024750 e(kxu) 0.99774654 0.93988469 0.99850112 0.96644855 0.96644855 0.99752806 终点力(KN) 1753.74 1648.31 1645.84 1590.62 1537.25 1533.45 0.9145 0.131022 0.9145 0.131022 20.412 0 0.9145 0.131022 0.9145 0.131022 1.650 0 3、伸长量计算
1757.72.71910.995930.01941m
91401950.004081750.552.87210.96744LBC0.02013m
91401950.033101693.560.310.99955LCD0.00207m
91401950.0004501692.790.914510.96645LDE0.00619m
91401950.0034131636.000.914510.96645LEF0.00599m
91401950.0034131581.1120.41210.96985LFG0.12936m
91401950.0306181757.71.50410.99775LML0.01075m
91401950.0022561753.745.35510.93988LLK0.03706m
91401950.062001648.31110.99850LKJ0.00670m
91401950.00151645.840.914510.96645LJI0.00602m
91401950.034131590.620.914510.96645LIH0.00582m
91401950.0034131537.251.65010.99753LHG0.01031m
91401950.002475LAB总伸长量: L0.01941+0.02013+0.00207+0.00619+0.00599+0.12936+0.01075+0.03706+0.00670+0.00602+0.00582+0.01031=0.2598m 与设计伸长值差:25.98-26.00=-0.02cm
40米T梁连续钢束伸长量计算
钢绞线根数:n=5根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力:NRyb0.75Agn18600.751405976.5KN 2、分段终点力计
钢束 N2钢束 分段 AB AB BC N1钢束 CD DE N3钢束 AB x(m) 8.00 0.3276 0.7737 (rad) 0 0 0.096866 0.096866 kxu 0.0120 0.0004914 0.0253770 0.0253770 0.0136875 0.021000 e(kxu) 0.9880717 0.9995087 0.9749423 0.9749423 0.9864057 0.979219 终点力(KN) 964.85 976.02 951.56 927.72 915.11 956.21 0.7737 9.125 14 0 0 3、伸长量计算
976.5810.98807170.1138m
51401950.0120976.50.327610.999509N1钢束:LAB0.00234m
51401950.0004914976.020.773710.974942LBC0.00546m
51401950.025377951.560.773710.9749420.00533m LCD51401950.025377927.729.12510.9864060.06159m LCD51401950.013688N2钢束 L=2LAB2LCDLCD0.00234+0.00546+0.00533+0.061592=0.1494mmm
N3钢束 L=2LAB2976.51410.9792190.1982m
51401950.0210与设计伸长值差 N2:11.38-11.4=-0.02cm N1:4.94-15.0=-0.06cm N3:19.82-19.8=0.02cm
20米空心板梁钢束伸长量计算
钢绞线根数:n=7根 1、张拉力计算
钢绞线强度:Ryb1860Mpa 系数:k0.0015、u0.25 钢绞线截面积:Ag140mm2 钢绞线弹性模量:E195Gpa 张拉力: NRyb0.7Agn18600.714071276.0KN 2、分段终点力计
钢束 分段 AB x(m) 1.0752 2.4188 6.306 (rad) 0 0.2443 0 0 0.043633 0 kxu 0.0016128 0.0647032 0.009459 0.00090885 0.01286971 0.01182825 e(kxu) 0.99838850 0.93734563 0.99058560 0.99909156 0.98721275 0.98824143 终点力(KN) 1273.94 1194.13 1182.88 1274.84 1258.54 1243.74 N2钢束 BC CD AB 0.6059 1.3086 7.8855 N1钢束 BC CD
根据以下公式计算得
LΔL=0Pe(kx)PL1e(kx)AyEgAyEgkxN2钢束伸长量 △L=2×(0.00717+0.01564+0.03922)=0.06203×2=12.41mm N1钢束伸长量 △L=2×(0.00404+0.00868+0.05163)=0.06435×2=12.87mm
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