期刊论文

中文

公路交通科技

1002-0268

2024

41

03

102-110

10.3969/j.issn.1002-0268.2024.03.012

51878073:国家自然科学基金 CX20190649:湖南省研究生科研创新项目

本校为第一机构

针对悬索桥空缆状态主缆架设无应力长度和恒载重量参数误差修正算法存在不闭合问题,提出一种参数误差修正闭合迭代算法.基于悬链线方程理论建立索鞍处非线性方程组,基于分段弹性悬链线理论建立各吊杆间迭代方程组,由几何相容条件联立非线性方程组及迭代方程组,迭代求解各跨主缆力学参数.利用索鞍两侧主缆力学平衡条件,依次进行全桥各索鞍位置迭代修正计算,直至全桥索鞍与主缆体系满足收敛条件,从而达到悬索桥合理成桥状态.将悬索桥施工期各关键控制参数与合理成桥状态计算参数实现闭合性迭代计算.最后,基于合理成桥状态参数求解空缆状态吊杆无应力长度、索夹安装位置及锚跨合理张力,实现空缆状态...

A parameter error correction closed iteration algorithm is proposed to address the problem of non-closure in the error correction algorithm for the unstressed length and constant load weight parameters of the main cable installation in the unloaded state of suspension bridges.A nonlinear equation system at the cable saddle is established based on the theory of catenary equations,and an iterative equation system among each suspension rod is established based on the theory of segmented elastic catenary.The nonlinear equation system and iterative equation system are combined by geometric compatib...