Abstract
Suspen-dome is a highly efficient pre-stressing spatial structure. The pre-stressing force in cable has a significant effect on its structural performance. During pre-stressing construction, the temperature variation due to solar radiation and seasonal change might affect the pre-stressing force in cables. However, the construction tensile method which is widely adopted in engineering project does not cope with the effect of temperature change on the cable force. As a result, it is expected that the actual cable force differs from the designed cable force. In this study, the effect of temperature change during pre-stressing construction on pre-stressing force in cable is firstly studied. A significant difference of cable force, up to 212%, is observed between cases considering temperature change and cases not considering temperature change. It is therefore necessary to take the effect of temperature changing on pre-stressing force into account in design of suspen-dome. In this purpose, a new construction pre-stressing control method and a simplified calculation formula are proposed and verified.
Published Version
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