以下是土木毕设网小编为大家搜集整理的桥梁上部结构设计论文摘要范文，供大家参考和借鉴!
本设计为桥梁上部结构设计。该桥全长200m，设计的跨径为5*40m，截面形式为T型截面。整个设计可以分成两个部分：
第一部分，结构建摸和内力计算。选择桥的桥型及孔径划分、主梁截面形式与主梁高度的拟定、截面细部尺寸拟定，随后进行结构内力计算。在完成了恒载内力的计算后，又进行了活载内力计算、次内力计算、内力组合计算，并画出内力包络图。第二部分，预应力钢束估算及布置，预应力损失及有效预应力计算，钢束布置后的内力计算及组合，强度计算与验算，应力、应变及其它验算。
关键词：混凝土简支转连续梁桥；单元划分和建立模型；内力计算；强度应力应变验算
ABSTRACT
The design is the one of the superstructure of the bridge.The whole span of the bridge is 200m.This bridge designs the span is5*40m,the main beam is to wait for the altitude unexpected turn of events cross section T beam.The entire design may divide into two parts：
The first part of the paper is about the modeling of the bridge and the computation of internal forces.The FEM model of the bridge is established after the style of the bridge,the length of every span the cross section and the height of the main beam are decided.Then every kind of internal forces is computed.These forces include the forces of dead load,live load and some secondary forces.Finally these loads are combined and the graph of the utmost forces is drawn.The second one is about the arrangement of prestressed steel bars and other kinds of tests.The number of the bars are estimated and arranged before the loss of the prestress and the effective one are caculated.Then the tests of the strength,the stress and the deformation of the bridge are carried out in the paper.
Key words:The concrete simple support transfers the continuous bridge;Unit division and establishment model;Endogenic force computation;Intensity stress strain checking calculation
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