Abstract
：Chord dome structure is a new type of hybrid prestressed spatial steel structure system, which is often used in large-span structures. During the construction of the structure, it is necessary to apply prestress to the ring cable. Taking the chord dome roof of Hebei North University gymnasium as an example, the whole process of prestressed cable construction is simulated and analyzed by using the finite element software ANSYS. The hoop cable of the dome roof can slide freely in the hoop direction, and the attribute of free sliding in the ANSYS interface is "coupling". In this paper, two kinds of simulation models, coupling and uncoupling, are established to compare, and then to explore the influence of coupling on the construction process of string dome structure.
Highlights
With the development of new technology and the improvement of building level, the long-span prestressed spatial steel structure, such as chord dome structure, has developed rapidly as a new force[1].The system can greatly reduce the amount of steel used, give full play to the strength of steel in the space stress, have a variety of forms in the building configuration, and have a good visual effect, so it is widely used in engineering[2,3,4,5].In this paper, the whole process of prestressed cable construction in Hebei North University Gymnasium is simulated and analyzed
The gymnasium of Hebei North University covers an area of 11390m2, with a total building area of 26352.4m2
The chord dome roof is composed of the upper single-layer latticed shell and the lower cable support system
Summary
With the development of new technology and the improvement of building level, the long-span prestressed spatial steel structure, such as chord dome structure, has developed rapidly as a new force[1].The system can greatly reduce the amount of steel used, give full play to the strength of steel in the space stress, have a variety of forms in the building configuration, and have a good visual effect, so it is widely used in engineering[2,3,4,5].In this paper, the whole process of prestressed cable construction in Hebei North University Gymnasium is simulated and analyzed. The chord dome roof is composed of the upper single-layer latticed shell and the lower cable support system. The upper single-layer latticed shell adopts the grid form of Kiewitt type [6],The lower chord support system is levy system, which is composed of five rings of circumferential cables, six rings of radial steel tie rods and vertical braces. In this project, ANSYS10.0 is used to carry out virtual tension analysis on the tension construction process.
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