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铁路混合配筋钢筋混凝土桥跨结构应力状态研究
| 论文题名： | 铁路混合配筋钢筋混凝土桥跨结构应力状态研究 |
| 关键词： | 混合配筋;钢筋混凝土桥;应力状态 |
| 摘要： | The stress state of a reinforced concrete superstructures with mixed reinforcement.The object of study - concrete span railroad using mixed reinforcement. The adopted pre-stressed concrete spans with the full length of 18.7 m and an estimated span of 18.0 m according to the model project inv. No. 556/13-2"Precast spans of prestressed concrete with a length of 16.5 ... 27,6 m for railway bridges"is used in calculation. The conducted study of the stress state of the main beam of the estimated length of 18.0 m in gradual replacement of bundles of the tendon of the lower belt on the valve rod，and the gradual exclusion of these beams with the simultaneous inclusion of the distribution valve has been made. The aim of this work is to study the stress state of concrete span with mixed reinforcement and weight it with a strained state prestressed superstructure. Confirmation of the results of analytical calculation using the finite element method ITU obtained by calculating the spatial model of the block spans in the software package LIRA. |
| 作者： | 师卓兵 |
| 专业： | 桥梁与隧道工程 |
| 导师： | 李子奇 |
| 授予学位： | 硕士 |
| 授予学位单位： | 兰州交通大学 |
| 学位年度： | 2015 |
| 正文语种： | 中文 |
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