城市地下建筑结构课程设计计算书

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1、《地下建筑结构课程设计计算书》一.荷载计算1.1结构尺寸及地层示意图图1-1结构尺寸及地层示意图1.2隧道外围荷载标准值计算1.2.1自重-钢筋混凝土自重；管片厚度；151.2.2均布竖向地层荷载①竖向地层荷载：②地面超载：③近似均布拱背土压力：其中：1.2..3水平地层均布荷载其中：则：151.2.4按三角形分布的水平地层压力其中：1.2.5拱底反力1.2.6侧向土层抗力其中：衬砌圆环抗弯刚度:衬砌圆环抗弯刚度折减系数:；则：取151.2.7荷载示意图图1-2圆环外围荷载示意图二、内力计算取一米长度圆环进行计算，其中荷载采用设计值，即考虑荷载组合系数。计算结果如下表（已

2、考虑荷载组合系数）：15隧道圆环内力计算结果截面/度弧度内力荷重自重轴线半径均布竖向地层荷载水压水平地层均布荷载底部反力△水平压力Pk引起的圆环内力每米内力g(kN/㎡)RH(m)q(kN/㎡)q(kN/㎡)P1(kN/㎡)PR(kN/㎡)P2(kN/㎡)Pk(kN/㎡)10.52.925173.512　99.241184.81239.45178.98300MkN.m44.9172.925443.867-25.667-212.267-77.478-35.440-80.41457.517180.31438.4012.925365.363-10.432-171.768-69.

3、283-30.263-68.73153.288360.62820.3412.925157.6270.802-65.723-45.500-15.426-34.82417.297540.942-5.0232.925-106.4106.93965.401-8.4536.19317.763-23.591721.256-31.3602.925-335.8647.377171.56938.23328.34974.578-47.119901.570-51.2412.925-455.6172.074212.26789.99442.174102.241-58.1091081.884-57.

4、3402.925-432.007-8.452171.966139.89739.91365.439-80.5851262.198-43.6792.925-265.550-23.17166.044159.85319.944-46.542-133.1011442.512-6.7352.92527.475-40.644-65.08091.930-10.541-34.824-38.4191622.82653.7362.925418.415-59.163-171.369-126.531-37.914-68.7318.4441803.140134.3022.925869.040-76.

5、916-212.266-530.342-48.941-80.41454.462　　　　　　　　　　　　00NKN-15.3562.925-53.797573.621290.28057.30136.11881.691969.857180.314-11.6272.925-2.750558.386262.58854.49934.28777.696973.079360.628-1.0942.925131.658547.151190.07946.36828.37766.1041008.643540.94214.3662.925300.305541.015100.42133.7031

6、8.36646.6881054.863721.25631.9252.925442.211540.57727.82817.7426.92617.2991084.508901.57048.2062.925507.479545.8800.0000.0460.0060.0001101.6171081.88459.7792.925499.408556.40627.556-42.6744.08117.3471121.9031262.19863.6702.925442.500571.12599.982-116.93321.43846.8331128.6131442.51257.8392

7、.925342.320588.598189.639-177.19447.05064.9311113.1831622.82641.5372.925208.665607.116262.316-170.17870.01077.6961097.162151803.14015.5102.92554.606624.869290.279-58.16079.27681.6911088.070根据表格所示，在度时轴力最大和弯矩最大二、标准管片配筋计算3.1截面及内力确定由上述内力计算，取，进行内力计算，衬砌管片同时受到较大的正弯矩与负弯矩，采用