Hazard Detection Method for the Bearing Pressure Area of Steel Structure Bridge across the Sea

Liu, Q. and Li, C., 2019. Hazard detection method for the bearing pressure area of steel structure bridge across the sea. In: Guido-Aldana, P.A. and Mulahasan, S. (eds.), Advances in Water Resources and Exploration. Journal of Coastal Research, Special Issue No. 93, pp. 969–974. Coconut Creek (Florida), ISSN 0749-0208.In order to improve the bearing capacity of the bridge with cross-sea steel structure, it is necessary to detect the danger in the bearing area. Based on the analysis of elastic modulus and the evaluation of bearing yield response, a dangerous detection method for the bearing area of the bridge with cross-sea steel structure is proposed. According to the material characteristics of cross-sea steel structure bridge, the bearing capacity model of building structure is established. The composite stiffness analysis of negative moment region and the slip detection method of superposition plane are used to test the bearing force of cross-sea steel structure bridge. The dynamic characteristics such as natural vibration frequency, mode shape and damping ratio of cross-sea steel structure bridge are analyzed. According to the elastic modulus of the compression region of the structure, the structural design reinforcement ratio of the cross-sea steel structure bridge is determined. In this paper, the buckling analysis method is used to evaluate the mechanics and the bearing stress of the bridge with cross-sea steel structure, so as to realize the dangerous detection of the bearing area of the bridge with the cross-sea steel structure. The test results show that the method has high accuracy, high strength, high bearing stress level and good strength and ductility in the bearing area of cross-sea steel structure bridge.