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箱梁预应力理论伸长值计算书

2023-04-27 来源:汇智旅游网
20米箱梁预应力钢绞线理论伸长值计算书(中跨)

张拉控制应力δcon=1395 MPa K=0.0015 µ=0.25 ⊿L=(δp×L)/Ep Ep=1.95×105 Mpaδp=δcon×(1-e-(KL+µθ))÷(KL+µθ) Ap=140 mm2 n—钢绞线束数 工作长度=65cm部位腹板底板钢束编号N1N2N3N1N2N3线段123123L(m)19.60219.63619.4016.36.313.3θ(rad)0.0314159270.0314159270000e-(KL+µθ)0.037256980.963428520.051270620.9500215450.02910150.9713178710.009450.9905945110.009450.9905945110.019950.980247684KL+µθ平均应力δp(MPa)1369.3330011359.8421591374.8971831388.4293391381.8896271368.196488伸长值(mm)137.65136.93136.7944.8644.6593.32合计(mm)411.4设计伸长量差值(mm)414-2.6负弯矩182.81793.820米箱梁预应力钢绞线理论伸长值计算书(边跨)

张拉控制应力δcon=1395 MPa K=0.0015 µ=0.25 ⊿L=(δp×L)/Ep Ep=1.95×105 Mpaδp=δcon×(1-e-(KL+µθ))÷(KL+µθ) Ap=140 mm2 n—钢绞线束数 工作长度=65cm部位钢束编号N1N2N3N2线段123123L(m)19.62719.63819.5016.36.313.3θ(rad)0.0314159270.0314159270000e-(KL+µθ)0.037294480.9633923920.051273620.9500186950.02925150.9711721840.009450.9905945110.009450.9905945110.019950.980247684KL+µθ平均应力δp(MPa)1369.3074861359.8401361374.7945711388.4293391381.8896271368.196488伸长值(mm)137.82136.95137.4944.8644.6593.32合计(mm)设计伸长量差值(mm)415-2.7腹板底板412.3负弯矩182.81793.830米箱梁预应力钢绞线理论伸长值计算书(中跨)

张拉控制应力δcon=1395 MPa K=0.0015 µ=0.25 ⊿L=(δp×L)/Ep Ep=1.95×105 Mpa

δp=δcon×(1-e部位-(KL+µθ)

)÷(KL+µθ) Ap=140 mm n—钢绞线束数 工作长度=65cm线段1234123L(m)29.5629.5929.6229.47.310.315.3θ(rad)0.0872664630.0872664630.0872664630000e-(KL+µθ)0.066156620.935984263KL+µθ0.066201620.9359421450.066246620.9359000280.04410.010950.015450.022950.9568582670.9891097330.9846687390.977311348平均应力δp(MPa)1349.8567331349.8266971349.7966611364.6874771387.3901761376.727571361.049785伸长值(mm)204.62204.83205.03205.7551.9472.72106.79231.42283.4合计(mm)设计伸长量差值(mm)2

钢束编号N1腹板底板N2N3N4820.2831-10.8负弯矩N230米箱梁预应力钢绞线理论伸长值计算书(边跨)

张拉控制应力δcon=1395 MPa K=0.0015 µ=0.25 ⊿L=(δp×L)/Ep Ep=1.95×105 Mpaδp=δcon×(1-e部位-(KL+µθ)

)÷(KL+µθ) Ap=140 mm n—钢绞线束数 工作长度=65cm线段1234123L(m)29.6729.6629.6429.67.310.315.3θ(rad)0.0872664630.0872664630.0872664630000e-(KL+µθ)0.066321620.935829838KL+µθ0.066306620.9358438760.066276620.9358719520.04440.010950.015450.022950.9565712520.9891097330.9846687390.977311348平均应力δp(MPa)1349.7466041349.7566151349.7766381364.4842981387.3901761376.727571361.049785伸长值(mm)205.37205.30205.17207.1251.9472.72106.79231.52283.4合计(mm)设计伸长量差值(mm)2

钢束编号N1腹板底板N2N3N4823.0835-12.0负弯矩N2

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