建筑钢结构进展2026，Vol.28Issue(5)：20-31,12.DOI:10.13969/j.jzgjgjz.20241102001
非对称偏态异形钢拱桥抗震性能及结构优化分析
Analysis of Seismic Performance and Structural Optimization of Asymmetric Skewed Special-Shaped Steel Arch Bridges
丁贵生 1王静峰 2姜克喜 1沈奇罕 2何振涛 1陈经纬3
作者信息
- 1. 安徽省交通建设股份有限责任公司,合肥 230041
- 2. 合肥工业大学 土木与水利工程学院,合肥 230009||合肥工业大学 土木工程结构与材料安徽省重点实验室,合肥 230009
- 3. 合肥工业大学 土木与水利工程学院,合肥 230009
- 折叠
摘要
Abstract
With the continuous increase in the city's development requirements for architectural aesthetics,asymmetric skewed special-shaped steel arch bridges have been gradually applied to key landmark buildings such as urban transportation hubs and landscape bridges in recent years due to their unique structural mechanical form and aesthetic visual impact.In order to clarify the seismic performance of asymmetric skewed special-shaped steel arch bridges and optimize the structural design parameters,this paper,relying on the Hefei Nanfei River Key Project-Guangde Road Bridge,establishes a seismic finite element analysis model of the asymmetric skewed bridge based on the results of the bridge's dynamic response test and verifies its accuracy.The dynamic time-history analysis of the asymmetric skewed special-shaped steel arch bridge under modified Taft seismic wave is carried out,and the effects of key parameters such as the rise-to-span ratio,the elevation difference of the arch ribs,the inward inclination angle of the arch ribs,the location of the arch crown,and the complex arch springing configurations on the seismic performance of the bridge are clarified.The results show that the seismic response of the two sides of the asymmetric skewed special-shaped arch bridge shows obvious differences.The peak vertical displacement occurs at the mid-span of the middle arch rib(Dx=24.06 mm),the peak axial force of the structure occurs at the top of the side diagonal braces in the form of tension(FN=2 701 kN),and the peak vertical bending moment occurs at the foot of the side arches of the north bank(My=9 062 kN∙m).At the same time,the structural design of Guangde Road Bridge still has some optimization space,and its relative optimized structural design parameters are a rise-to-span ratio of 1/3.45 to 1/3.10,an arch rib elevation difference of 8.6%,an arch rib inclination angle of 10°00',and an arch crown position of 0.55L,while retaining the design configuration of the tie rods and diagonal braces in the complex arch springing region.The research results may provide a reference basis for the seismic performance evaluation and structural design optimization of similar asymmetric special-shaped steel arch bridges.关键词
非对称偏态异形钢拱桥/抗震性能/结构优化/Taft地震波/动力时程分析Key words
asymmetric skewed special-shaped steel arch bridge/seismic performance/structural optimization/Taft seismic wave/dynamic time-history analysis分类
交通工程引用本文复制引用
丁贵生,王静峰,姜克喜,沈奇罕,何振涛,陈经纬..非对称偏态异形钢拱桥抗震性能及结构优化分析[J].建筑钢结构进展,2026,28(5):20-31,12.
