埋地钢管的结构计算参考《给水排水工程埋地钢管管道结构设计规1.基本资料项目符号单位均按柔性管道计算5.1.3Fcr,k1)材料性能Ep(kN/m2)2.06E+08525.79536792f(N/mm2)215567.29955253侧原状土变形模量En(kN/m2)5.00E+03880.4054114α1.20E-051337.6129435侧填土变形模量Ee(kN/m2)3.00E+031915.5037826回填土重度rs(kN/m3)192606.9223157Ee/En0.603409.0496658钢管重度rst(kN/m3)78.54320.5848119B.0.2 管中心处槽宽度Br(m)95340.85753110水重度rw(kN/m3)106469.49328811Br/D16.347706.2691812钢管泊桑比νp0.39051.04570513B.0.2 计算参数ξ1.02查表B.0.2-210503.7318814回填土泊桑比νs0.412064.266315A3钢管侧土综合变形模量Ed(kN/m2)3.06E+0313732.60627162)几何参数单个车轮着地分布长度 a(m)0.2??15508.7213917宽度b(m)0.6??17392.589518管壁计算宽度b0(m)119384.1941519管壁设计厚度t1(m)0.0121483.5229220管道内径D(m)1.423690.566321设计地面高程(m)3326005.3168822覆土高度Hs(m)1.228427.7688423管中心高程(m)31.130957.9175724管顶高程(m)31.8133595.7593325设计外水位高程(m)3336341.2911126管壁纵向截面惯性矩Ip(m4/m)0.0008333???39194.5104627管道外壁直径D1(m)1.4242155.4153328管道的计算直径D0(m)1.41按圆心至管壁中线计算45224.0040429管道的计算半径r0(m)0.70548400.2751730管道的外壁半径r1(m)0.7151684.2275531管壁计算厚度t0(m)0.00855075.86017323)计算系数管自重分项系数rG11.258575.1721833竖向土压力rG,sv1.2762182.1628434管内水重rGw1.265896.8315435地基不均匀沉降rGs1.2769719.17772365.2.3 内水、车、堆、温分项γq1.473649.2009337包角15077686.9007438管自重下弯矩系数kgm0.077查表A81832.2768239竖向土压力kvm0.128查表A86085.3288540管内水重kwm0.077查表A竖向压力下竖向变形kb0.085查表A7.0.2 变形滞后效应DL1.31.0~1.56.1.1 应力折减系数η0.95.2.2 管道结构重要性γ01.1单管1.1双1.06.1.3 弯距折减系数ψ0.70.7~1.05.2.3 可变作用组合ψc0.96.2.2 折绉波数n25.2.4 管壁截面设计稳定抗力 Kst25.2.5 抗浮稳定Kf1.1变形滞后效应DL1.5tDGstk012.荷载计算1)钢管自重标准值G1k(kN/m)3.482)竖向土压力Fsv,k(kN/m)32.383)管内水重Gwk(kN/m)15.394.3.1 4)设计内水压力Fwd,k(kN/m2)200.00区别对待4.3.1-1~2,管道的工作压力Fwk(kN/m2)150.00100kPa=10m水头,ψq=04.3.2 5)真空压力Fvk(kN/m2)50....