作者机构:
[曹国辉; 张锴; 张贤] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[胡佳星] College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411105, China
通讯机构:
College of Civil Engineering, Hunan City University, China
摘要:
In order to research on mechanical properties of flexible suspension bridges, a geometric nonlinear analysis method was used to simulate on the experimental results, and carried on static loading test finally. In the loading test process, the deformations were measured in critical section of the suspension bridge, and displacement values of measured are compared with simulation values of the finite element simulation. Meanwhile the deformations of the main cable sag are observed under classification loading, the results show that the main cable sag increment is basically linear relationship with the increment of mid-span loading and tension from 3L/8 and 5L/8 to L/2 section, the main cable that increasing unit sag required mid-span loads and tension are gradually reduce in near L/4 and 3L/4 sections and gradually increase in near L/8 and 7L/8 sections and almost equal in near L/2, 3L/8 and 5L/8 sections. From the experimental results, the flexible suspension bridge possess good mechanical properties.
作者机构:
[张锴; 曹国辉] School of Civil Engineering, Hunan City University, Yiyang Hunan 413000, China;[胡佳星] School of Civil Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411105, China
通讯机构:
School of Civil Engineering, Hunan City University, China
作者机构:
[方志] College of Civil Engineering, Hunan University, Changsha 410082, China;[曹国辉] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[伍琼芳] School of Urban Construction Nanhua University, Hengyang 421001, China
通讯机构:
College of Civil Engineering, Hunan University, China
期刊:
4TH INTERNATIONAL SYMPOSIUM ON LIFETIME ENGINEERING OF CIVIL INFRASTRUCTURE,2009年:665-670
通讯作者:
Cao, Guo-Hui
作者机构:
[Liu, Xiao-Fang; Cao, Guo-Hui; Liu, Xiang-Rong; He, Ran] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.
通讯机构:
[Cao, Guo-Hui] H;Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.
会议名称:
The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)
会议时间:
2009-10-26
会议地点:
长沙
会议论文集名称:
The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)论文集
关键词:
Concrete columns;creep;ultimate strength
摘要:
Long-term mechanical properties test for 864 days were completed on three types column, including plain concrete(PC), reinforced concrete(RC) and concrete-filled steel tube(CFST) columns, the creep performance and ultimate strength were tested and analyzed. Creep test results show that reinforcement can significantly reduce the creep deformation of concrete columns. The creep coefficient of steel pipe surface is larger than that of inner concrete for CFST columns, it would last a long time for the creep of inner concrete to achieve stability. The ultimate strength test results show that loading age and reinforcement have great effect on extreme compression strain and ultimate strength of PC columns and RC columns. Whether it has loading course would influence the stress redistribution of CFST columns, the stress redistribution effect is relatively small for columns having loading course. However, whether it has loading course, the creep effect on the ultimate strength of CFST columns is very small.
作者机构:
[曹国辉] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[方志; 曹国辉] School of Civil Engineering, Hunan University, Changsha 410082, China
通讯机构:
[Cao, G.-H.] S;School of Civil Engineering, Hunan City University, China