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| 高墩大跨弯连续刚构桥空间稳定性的解析解 | |
| 引用本文： | 李文华,贺拴海,鲁洁. 高墩大跨弯连续刚构桥空间稳定性的解析解[J]. 西安建筑科技大学学报(自然科学版), 2011, 43(1) |
| 作者姓名： | 李文华 贺拴海 鲁洁 |
| 作者单位： | 1. 长安大学,陕西,西安,710064;中交第一公路勘察设计研究院有限公司,陕西,西安,710065 2. 长安大学,陕西,西安,710064 3. 西安建筑科技大学土木工程学院,陕西,西安,710055 |
| 基金项目： | 陕西省交通科技资助项目(04-14k) |
| 摘 要： | 根据高墩弯连续刚构桥从裸墩、悬臂浇筑施工到成桥各阶段的受力特点,将成桥后主梁对主墩的约束作用简化为等效约束刚度的弹簧,利用Hamilton原理,推导高墩自体、悬浇施工以及成桥阶段的动力稳定方程,进一步退化为静力稳定问题,得到了静力稳定系数表达式,并分析了诸因素对高墩弯连续刚构桥稳定性的影响.从而寻求高墩大跨弯连续刚构桥梁空间稳定性的实用简便算法.通过实例分析,验证其计算结果的可靠性. |
| 关 键 词： | 高墩 弯连续刚构 稳定分析 Hamilton原理 等效约束刚度 |
Stability analysis of long span curved continuous rigid frame bridge with high pier based on the Hamilton principle |
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| LI Wen-hua,HE Shuan-hai,LU Jie. Stability analysis of long span curved continuous rigid frame bridge with high pier based on the Hamilton principle[J]. Journal of Xi'an University of Architecture & Technology, 2011, 43(1) | |
| Authors: | LI Wen-hua HE Shuan-hai LU Jie |
| Affiliation: | LI Wen-hua1,2,HE Shuan-hai1,LU Jie3 (1.Chang'an University,Xi'an 710064,China,2.CCCC First Highway Consultants CO.,Ltd,Xi'an 710075,3.School of Civil Eng.,Xi'an Univ.of Arch.& Tech.,Xi'an 710055,China) |
| Abstract: | According to the character under power of curved continuous rigid frame bridge with high pier from single pier,cantilever construction to complete bridge,the equivalent restraint stiffness spring is utilized to simplify the main beam constraint to the main pier in the state of completed bridge.The dynamic stability equations of structures at each stage are derived by Hamilton principle and are converted in to the static stability equations.Based on these,the static stability factors of structures are obtain... |
| Keywords: | high pier curved continuous rigid frame analysis of stability Hamilton principle equivalent restraint stiffness |
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