摘要
通过利用MIDAS建立空间结构模型,以结构的弯曲应变能最小作为目标函数来初定成桥状态,再以主梁成桥恒载弯矩可行域作为约束,综合考虑索力的均匀性以及主梁、拱肋的受力情况,适当调整索力,得到合理成桥状态.
Research has been carried out to build space structure model by MIDAS,tentative the completed state by using the minimum Least Bend Energy Theoretic as objective function,take the dead load bending moment feasible region as restrict,consider the requirements of uniform of the cable forces,the stress of the beam and arch rib,adjust the cable force properly and then attain a reasonable completed state.
出处
《长沙理工大学学报(自然科学版)》
CAS
2010年第3期31-35,84,共6页
Journal of Changsha University of Science and Technology:Natural Science
基金
国家自然科学基金资助项目(50778024)
交通部应用基础项目(2008-329-825-040)
关键词
拱梁组合体系
吊杆索力
合理成桥状态
beam-arch-frame composite bridge
cable force
reasonable status of completed bridge