作者机构：
[丁毅; 田仲初; 颜东煌; 刘雪锋] School of Bridge and Structural Engineering, Changsha University of Science and Technology, Changsha 410076, China;[刘雪锋] Engineering Quality Supervision Station of Traffic Construction of Guizhou Province, Guiyang 550004, China
通讯机构：
School of Bridge and Structural Engineering, Changsha University of Science and Technology, China
摘要：
大跨 PC 连续刚构桥合龙段施工时.可在锁定支撑刚性固结前对合龙段粱端施加水平预顶力来达到使墩顶预偏的目的.以部分抵消水平位移对墩顶的影响。本文参考斜拉桥索力优化的影响矩阵法.提出了适用于大跨 PC 连续刚构桥合龙段施工时预顶力优化计算的影响矩阵法.并以贵州平寨特大桥这种五跨 PC 连续刚构桥预顶力优化模型为例.将影响矩阵法与二分法相结合. 计算出能使施工阶段及成桥运营阶段的结构受力都逼近合理的预顶力方案。
作者机构：
[Zhang, Ke-Bo; Zhang, Jian-Ren; Yan, Dong-Huang] School of Bridge and Structure Engineering, Changsha University of Science and Technology, Changsha, China
通讯机构：
School of Bridge and Structure Engineering, Changsha University of Science and Technology, China
摘要：
Maocaojie Bridge is a half-through concrete-filled steel tube (CFST) tied-arch bridge in the Hunan Province of China. A model of this bridge with the scale ratio of 1:20 was built up in the laboratory. The model test investigation was performed. This work focuses on the arch rib erection method, especially the final construction stages of the bridge. In addition, the mechanical characteristics of the arch ribs and the stay cable in the process of arch rib erection are analyzed. The simulated results are compared to the field-measured data. It is shown that the simulated calculations have a satisfactory accuracy. Hence, some suggestions about construction techniques and construction control methods for this type of bridges are proposed.
会议名称：
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)
会议时间：
2008-10-31
会议地点：
杭州
会议论文集名称：
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)论文集
关键词：
PC cable-stayed bridge;Construction simulation;Geometrical nonlinear;ANSYS
摘要：
Using the development tool APDI, language and element capability of birth and death in ANSYS, the construction state of Jingzhou bridge is simulated in the paper. Two stages, the longest single-cantilever and twin-cantilever, are selected to analysize the individual influence of different sources of nonlinear factors (the large deflection, beam-column and cable sag effects). Results show that the coupled effect of three geometrical nonlinear factors is not the simple sum of individual factors, which should be considered comprehensively. The nonlinear contribution by large deflection is the most significant one, the beam-column effect is minor than the large deflection effect and the cable sag effect is comparatively least important.
作者机构：
[朱灿; 梁昔明] College of Information Science and Engineering, Central South University, Changsha 410083, China;[颜东煌] College of Bridge and Structure Engineering, Changsha University of Science and Technology, Changsha 410076, China;[朱灿] College of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410076, China
通讯机构：
College of Information Science and Engineering, Central South University, China
作者机构：
[颜东煌; 陈常松] School of Civil and Architecture Eng., Changsha Univ. of Sic. and Tech., Changsha 410082, China;[陈政清] Civil Engineering School, Hunan University, Changsha 410075, China
通讯机构：
School of Civil and Architecture Eng., Changsha Univ. of Sic. and Tech., China
