摘要
为提高索塔横撑方案的设计效率并保证横撑方案的安全性与经济性,提出一种索塔横撑自适应设计与优化方法。基于Python编程语言对Abaqus进行二次开发,进行索塔自动化建模与参数化分析,完成索塔爬模施工过程中应力与线形的实时监控及横撑方案的动态调整,得出能保证施工安全性与经济性的最优横撑设计方案。以某斜拉桥钢筋混凝土索塔为工程案例,计算了不设置横撑、保持原有横撑方案以及优化横撑方案下索塔爬模施工应力场。结果表明,主动横撑的设置能显著改善施工过程中的应力与线形状态,两种横撑设置方案均能满足应力控制与线形控制要求;相较于原有横撑方案,优化横撑方案下索塔线形更接近理想线形状态,主动横撑总用钢量减少了45.35%,在满足了施工控制要求的同时具有更高的经济性。
To enhance efficiency in design and optimization of cross-brace schemes during cable tower climbing formwork construction and ensure safety and economy,an adaptive design and optimization method for tower cross-braces is proposed.Based on Python programming,a secondary development of Abaqus is conducted,taking the number,position,and jacking force of the braces as variables for automated modeling and parametric analysis of the tower construction.Real-time monitoring of stress and alignment during climbing formwork construction and dynamic adjustment of the bracing scheme are achieved,yielding an optimal bracing design that ensures both construction safety and economy.Taking a reinforced concrete cable-stayed bridge tower as the study background,stress fields under scenarios without braces,with original bracing scheme,and with the optimized bracing scheme are calculated.Results indicate that active bracing significantly improves stress and alignment conditions during construction,and both schemes meet stress and alignment control requirements.Compared with the original cross brace scheme,the alignment of the tower under the optimized cross brace scheme is closer to the ideal linear state,with a total steel volume reduction of 45.35%,satisfying construction control requirements with enhanced economic efficiency.
作者
郭永兵
韩炜
时继浩
张可涵
朱劲松
GUO Yong-bing;HAN Wei;SHI Ji-hao;ZHANG Ke-han;ZHU Jing-song(CCCC First Highway Engineering Co.Ltd.,Beijing 100024,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China)
出处
《公路》
北大核心
2025年第8期158-164,共7页
Highway
基金
国家自然科学基金项目,项目编号52078333。
关键词
桥梁工程
钢筋混凝土索塔
爬模施工
施工控制
横撑优化
bridge engineering
reinforced concrete cable towers
climbing formwork construction
construction control
bracing optimization
