| 基于结构可靠度的高墩施工期稳定性分析 |
| |
| 引用本文： | 郝海霞,蔡长丰,赵学科.基于结构可靠度的高墩施工期稳定性分析[J].湖南城市学院学报(自然科学版),2009,18(1). |
| |
| 作者姓名： | 郝海霞 蔡长丰 赵学科 |
| |
| 作者单位： | [1]长沙理工大学土木与建筑学院,长沙410076 [2]湖南路桥建设集团公司,长沙410004 |
| |
| 基金项目： | 湖南省教育厅科研基金资助项目(05C257) |
| |
| 摘 要： | 由于桥墩在施工过程中承受的荷载与成桥使用期荷载不同，在考虑风荷载、偏心荷载等不利影响下建立了高墩施工期稳定性功能函数，并以实际算例计算得到高墩的可靠指标．通过参数的敏感性分析表明，高墩施工期稳定性可靠度影响比较大的参数为混凝土轴压强度的不定性及计算模式的不定性；偏心荷裁对高墩的影响不显著，但墩高对可靠指标有较大影响，随着墩高的增大，可靠指标有明显的降低．
|
| 关 键 词： | 高墩 施工期 可靠度 稳定性 |
Stability Analysis of High Piers During Construction Process Based on Reliability |
| |
| HAO Hai-xia,CAI Chang-feng,ZHAO Xue-ke.Stability Analysis of High Piers During Construction Process Based on Reliability[J].Journal of Hunan City University:Natural Science,2009,18(1). |
| |
| Authors: | HAO Hai-xia CAI Chang-feng ZHAO Xue-ke |
| |
| Institution: | 1.School of Civil Engineering and Architecture;Changsha University of Science and Technology;Changsha 410076;China;2.Hunan Road and Bridge Construction Group Corporation;Changsha 410004;China |
| |
| Abstract: | Loads of the piers during the construction process are different with loads of the use of bridge.In this paper,the authors establish high piers stability function during construction considering wind loads,eccentric loads,and calculate the reliability index of a practical bridge.By means of parameter sensitivity analysis,the results show that during high-pier construction period the greatest influence factors on the reliability index stability are the axial compression strength of concrete uncertainty and c... |
| |
| Keywords: | high piers construction process reliability stability |
| 本文献已被 CNKI 维普 等数据库收录！ |
