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中文摘要：
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.
英文摘要：
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.
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