20m跨预应力混凝土空心板计算示例目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc127775433"1计算依据与基础资料PAGEREF_Toc127775433\h3HYPERLINK\l"_Toc127775434"1.1标准及规范PAGEREF_Toc127775434\h3HYPERLINK\l"_Toc127775435"1.1.1标准PAGEREF_Toc127775435\h3HYPERLINK\l"_Toc127775436"1.1.2规范PAGEREF_Toc127775436\h3HYPERLINK\l"_Toc127775437"1.1.3参考资料PAGEREF_Toc127775437\h3HYPERLINK\l"_Toc127775438"1.2主要材料PAGEREF_Toc127775438\h3HYPERLINK\l"_Toc127775439"1.3设计要点PAGEREF_Toc127775439\h3HYPERLINK\l"_Toc127775440"2横断面布置PAGEREF_Toc127775440\h3HYPERLINK\l"_Toc127775441"3汽车荷载横向分布系数、冲击系数的计算PAGEREF_Toc127775441\h4HYPERLINK\l"_Toc127775442"3.1汽车荷载横向分布系数计算PAGEREF_Toc127775442\h4HYPERLINK\l"_Toc127775443"3.1.1跨中横向分布系数PAGEREF_Toc127775443\h4HYPERLINK\l"_Toc127775444"3.1.3车道折减系数PAGEREF_Toc127775444\h6HYPERLINK\l"_Toc127775445"3.2汽车荷载冲击系数值计算PAGEREF_Toc127775445\h6HYPERLINK\l"_Toc127775446"3.2.1汽车荷载纵向整体冲击系数PAGEREF_Toc127775446\h6HYPERLINK\l"_Toc127775447"3.2.2汽车荷载的局部加载的冲击系数PAGEREF_Toc127775447\h6HYPERLINK\l"_Toc127775448"4作用效应组合PAGEREF_Toc127775448\h6HYPERLINK\l"_Toc127775449"4.1作用的标准值PAGEREF_Toc127775449\h6HYPERLINK\l"_Toc127775450"4.1.1永久作用标准值PAGEREF_Toc127775450\h6HYPERLINK\l"_Toc127775451"4.1.2汽车荷载效应标准值PAGEREF_Toc127775451\h7HYPERLINK\l"_Toc127775452"4.2作用效应组合PAGEREF_Toc127775452\h9HYPERLINK\l"_Toc127775453"4.2.1基本组合（用于结构承载能力极限状态设计）PAGEREF_Toc127775453\h9HYPERLINK\l"_Toc127775454"4.2.2作用短期效应组合(用于正常使用极限状态设计)PAGEREF_Toc127775454\h11HYPERLINK\l"_Toc127775455"4.2.3作用长期效应组合（用于正常使用极限状态设计）PAGEREF_Toc127775455\h11HYPERLINK\l"_Toc127775456"4.3截面预应力钢束估算及几何特性计算PAGEREF_Toc127775456\h13HYPERLINK\l"_Toc127775457"4.3.1A类部分预应力混凝土受弯构件受拉区钢筋面积估算PAGEREF_Toc127775457\h13HYPERLINK\l"_Toc127775458"4.3.2换算截面几何特性计算PAGEREF_Toc127775458\h15HYPERLINK\l"_Toc127775459"5持久状态承载能力极限状态计算PAGEREF_Toc127775459\h16HYPERLINK\l"_Toc127775460"5.1正截面抗弯