铁路桥梁桥墩基础设计计算说明书

铁路桥梁桥墩基础设计计算说明书铁路桥梁桥墩基础设计计算说明书铁路桥梁桥墩基础设计计算说明书第 1 章概述1.1 工程概况和设计任务该桥梁系某 I 级铁路干线上的特大桥（单线） ，线路位于直线平坡地段。该地区地震设防烈度为VI 度，不考虑地震设防问题。桥梁及桥墩部分的设计已经完成，桥跨由 38 孔 32m 后张法预应力混凝土梁【图号：专桥（ 01）2051】组成，该梁全长32.6m，梁高 2.65m，跨中腹板厚度0.18m，下翼缘梁端宽0.88m，上翼缘宽 1.92m，为分片式 T 梁，两片梁腹板中心距为 2.0m，桥梁跨中纵断面示意如图1－1 所示。每孔梁的理论重量为2276kN，梁上设双侧人行道，其重量与线路上部建筑重量为35.5kN/m。梁缝 10cm，桥墩支承垫石顶面高程1178.12m，轨底高程 1181.25m，全桥总布置见图1— 2。图 1— 1桥梁跨中纵断面示意图铁路桥梁桥墩基础设计计算说明书图 1— 2 全桥总布置图12345678910111213141516171819107610811086109110961101110611111116112111261131113611411146115111561161116611711176118111861191地面高程里程1178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.12DK12+748.26DK12+780.96DK12+813.66DK12+846.36DK12+879.06DK12+911.76DK12+944.46DK12+977.16DK13+009.86DK13+042.56DK13+075.26DK13+107.96DK13+140.66DK13+173.36DK13+206.06DK13+238.76DK13+271.46DK13+304.16DK13+336.86DK12+715.561166.401161.751161.161160.101156.211153.991152.221147.681144.611142.321139.411134.821136.781133.941133.361130.191125.911124.841123.83202127222324252637282930313233343536107610811086109110961101110611111116112111261131113611411146115111561161116611711176118111861191地面高程里程1178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.121178.12DK13+369.56DK13+402.26DK13+598.46DK13+434.96DK13+467.66DK13+500.36DK13+533.06DK13+565.76DK13+925.46DK13+958.16DK13+631.16DK13+663.86DK13+696.56DK13+729.26DK13+761.96DK13+794.66DK13+827.36DK13+860.06DK13+892.76381124.021120.411127.491122.151121.611121.401122.041123.041166.931133.431136.021141.661145.371147.991152.421156.931161.081163.9...