Seismic control of cable-stayed bridges with bearing uplift using tie-down rope-spring device
Yi Jiang, De’en Yu, Junyong Zhou
Abstract
A tie-down rope-spring device (TRD) is proposed to control bearing uplift of cable-stayed bridges under a design earthquake. The mechanical properties of TRD depict a favorable interaction between its horizontal and vertical directions, i.e. the horizontal displacement results in tie-down force. A procedure is proposed to design the TRD for a case cable-stayed bridge under longitudinal seismic excitations. Analytical results validate the effectiveness of TRDs in restricting bearing uplift of the case bridge, showing a large reduction of uplift displacement at deck end, pounding force at bearings and shear force of the crossbeam.
Topics & Concepts
RopeStructural engineeringBearing (navigation)Spring (device)Bridge (graph theory)DeckDisplacement (psychology)EngineeringGeologyInduced seismicityGeotechnical engineeringSeismologyComputer scienceMedicinePsychologyInternal medicineArtificial intelligencePsychotherapistStructural Engineering and Vibration AnalysisSeismic Performance and AnalysisVibration and Dynamic Analysis