title: Geometric nonlinear analysis of self-anchored cable-stayed suspension bridges.
abstract: Geometric nonlinearity of self-anchored cable-stayed suspension bridges is studied in this paper. The repercussion of shrinkage and creep of concrete, rise-to-span ratio, and girder camber on the system is discussed. A self-anchored cable-stayed suspension bridge with a main span of 800 m is analyzed with linear theory, second-order theory, and nonlinear theory, respectively. In the condition of various rise-to-span ratios and girder cambers, the moments and displacements of both the girder and the pylon under live load are acquired. Based on the results it is derived that the second-order theory can be adopted to analyze a self-anchored cable-stayed suspension bridge with a main span of 800 m, and the error is less than 6%. The shrinkage and creep of concrete impose a conspicuous impact on the structure. And it outmatches suspension bridges for system stiffness. As the rise-to-span ratio increases, the axial forces of the main cable and the girder decline. The system stiffness rises with the girder camber being employed.
authors.affiliation: Bridge Engineering Research Institute, Dalian University of Technology, Dalian 116085, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Hui-Li
authors.forename: Tan
authors.initials: T
authors.lastname: Yan-Bin
authors.forename: Qin
authors.initials: Q
authors.lastname: Si-Feng
authors.forename: Zhang
authors.initials: Z
authors.lastname: Zhe
mesh_terms: D003198:Computer Simulation; D060389:Construction Industry / Q000295:instrumentation*; D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D013314:Stress, Mechanical; D013718:Tensile Strength; D014186:Transportation / Q000295:instrumentation*