译 名：
Effect of Cables on Stability Analysis of Cable arch Structure
作 者：
Ju Jinsan\ Wang Zhifang(College of Water Conservancy and Civil Engineering,CAU)\ Guo Yanlin(Tsinghua University)
关键词：
cable arch structure; nonlinear bucking analysis; limit load carrying capacity; post buckling
摘 要：
The effects of cables on the instability behavior of the structure hybridized by I section arch and tensile cables have been studied theoretically by using the large deflection(displacement) finite element approach with beam and cable elements, in conjunction with arc length method and Newton Raphson iteration. A full load displacement equilibrium path is obtained, including pre buckling and post buckling equilibrium path. It is found from the load displacement path that the cables have affect significantly to the structure's behavior, including its limit load carrying capacity and its load displacement paths, and especially they greatly increase the limit load carrying capacity of the hybridized structure by near 40% only in the case of the half span uniformly distributed load. Further more, the effects of rise span ratio on the limit load carrying capacity are also involved in the theoretical investigation. Some conclusions to the design of the cable arch structure are drawn from teh numerical results obtained in the study.
