基于多目标模糊优化理论的桥梁支架施工方案优选

Optimization of Bridge Support Construction Scheme Based on Multi-objective Fuzzy Optimization Theory

摘要:

为提升桥梁复杂环境下施工方案的科学性与适应性，以调军台桥为工程背景，开展支架施工方案优选研究。基于多目标模糊决策理论，综合考虑结构强度、刚度、稳定性、抗洪能力、造价、工期与技术先进性等因素，构建桥梁支架方案多目标模糊优化模型，并结合有限元分析方法，对三种支架布设方案进行了系统对比。结果表明，对于调军台桥，少支架方案在结构性能、安全性可控的前提下，具备更高的经济性与防洪适应性，具有良好的工程推广前景，为复杂地形与洪水频发区域桥梁施工提供了理论支撑与实践参考。

Abstract:

To enhance the scientificity and adaptability of bridge construction schemes in complex environments, taking the Tiaojuntai Bridge as the engineering background, an optimization study on the support construction schemes is conducted. Based on the multi-objective fuzzy decision-making theory, a multi-objective fuzzy optimization model for bridge support schemes is established by comprehensively considering the factors such as structural strength, stiffness, stability, flood resistance, cost, construction period and technological advancement. Combined with the finite element analysis, three support layout schemes are systematically compared. The results show that for the Tiaojuntai Bridge, the minimal support scheme has higher economic efficiency and better flood adaptability under the premise of controllable structural performance and safety, and has a good prospect for engineering promotion, which provides both theoretical support and practical reference for the bridge construction in complex terrain and flood-prone areas.