Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Steel and Composite Structures Volume 49, Number 2, October 25 2023 , pages 125-141 DOI: https://doi.org/10.12989/scs.2023.49.2.125 |
|
|
|
Inverse analysis of erection process for prismatic tensegrity structures with redundant cables |
||
Pei Zhang, Huiting Xiong, Jingjing Yang and Jiayan Liu
|
||
| Abstract | ||
| Firstly, a new kind of prismatic tensegrity structures with redundant cables is defined, the topology, geometry and forming conditions of which are introduced further. The development of its mechanical properties including self-stress states and structural stiffness with the increment of the twist angle is also investigated carefully. Combined with the topology of this kind of structures, a reasonable erection scheme is proposed, in which some temporary lifting points need to be set and two groups of vertical cables are tensioned in batches. Then, a simplified dynamic relaxation method is employed to track the erection process inversely, which aims to predict each intermediate equilibrium state during the construction, and give the key structural parameters that can effectively guide the construction. The removal of the active cables, the relaxation or tension of the passive cables are simulated by controlling their axial stiffness, so that the structural composition as well as the serial numbers of the elements always keep invariant regardless of the withdrawal of the slack cables. The whole analysis process is clear in concept, simple to implement and easy to popularize. Finally, several examples are given to verify the practicability and effectiveness of the proposed method further. | ||
| Key Words | ||
| dynamic relaxation method; erection process; inverse analysis; redundant cables; tensegrity structures; twist angle | ||
| Address | ||
| Pei Zhang and Jingjing Yang:College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China Huiting Xiong:School of Civil Engineering, Wanjiang University of Technology, Ma'anshan 243031, China Jiayan Liu:Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, China | ||