基于混合算法的独塔斜拉桥索力优化分析  

Analysis of the Cable Force Optimization of Single-tower Cable-stayed Bridge Based on Hybrid Algorithm

作　　者：仲昭飞 崔凤坤 李龙深 刘睿 武彬 Zhong Zhaofei;Cui Fengkun;Li Longshen;Liu Rui;Wu Bin(China Railway Tenth Bureau Group Co.,LTD.,Jinan 250101,China;Shandong Jiaotong University,Jinan 250357,China)

机构地区：[1]中铁十局集团有限公司,济南250101 [2]山东交通学院,济南250357

出　　处：《黑龙江科学》2024年第18期66-69,共4页Heilongjiang Science

摘　　要：为了使斜拉桥索力优化过程更简洁,提出一种基于混合算法的独塔斜拉桥索力优化思路。基于桥梁有限元模拟结果,选取主梁位移差、桥塔偏位等成桥状态参数作为优化目标,成桥索力作为控制变量,通过响应面法将选定的优化目标和成桥索力的隐式函数关系显示化,通过粒子群算法对目标的最优解进行识别,获得优化后的独塔斜拉桥索力值。依托北方某独塔斜拉桥进行工程应用,结果表明,经过索力优化后,大幅度提升了成桥索力及主梁弯矩的均匀性,主梁整体线形更为理想,算法有效性得到了验证。In order to make the cable force optimization process of cable-stayed bridge more concise,the study proposes a method of cable force optimization of single-tower cable-stayed bridge based on hybrid algorithm.Based on the finite element simulation results of the bridge,the study selects the bridge state parameters,such as the displacement difference of the main beam and the deflection of the bridge tower,as the optimization objectives,and the cable force of the bridge as the control variable.The study displays the implicit functional relationship between the selected optimization objectives and the cable force of the bridge by the response surface method,identifies the optimal solution of the target by particle swarm optimization algorithm,and obtains the cable force of the single tower cable-stayed bridge after optimization.Based on the engineering application of a single tower cable-stayed bridge in North China,the results show that after the cable force optimization,the uniformity of the cable force and the bending moment of the main beam is greatly improved,the overall linear shape of the main beam is more ideal,and the effectiveness of the algorithm is verified.

关 键 词：独塔斜拉桥 成桥索力 响应面法 粒子群算法 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]