铁道标准设计2025，Vol.69Issue(6)：96-105,10.DOI:10.13238/j.issn.1004-2954.202309030002
跨座式单轨交通PC轨道梁优化设计、智能软件开发与试验验证
Optimized Design,Intelligent Software Development,and Experimental Verification of PC Track Beams for Straddle-Type Monorail Transit
摘要
Abstract
Track beams are considered as one of the three core technologies in straddle-type monorail transit systems,and their technological innovation and advancement have always been the essential factors restricting the development of monorail transit in China.Building upon the research project"Optimized Design and Manufacturing Process of a New 25 m Prestressed Concrete(PC)Track Beam",this study independently developed"PC Track Beam Reinforcement Calculation Program"and"Standardized PC Track Beam Design Software".Using these tools,the design of a new 25 m PC track beam for straddle-type monorail systems was completed.The intelligent software automatically generated the layout drawings for both prestressed and common reinforcement in the 25 m PC track beam.Experimental verification was conducted on the full-scale 25 m PC track beam,including static loading,torsion,cracking,3-million-cycle fatigue,and failure tests.To validate the correctness of the optimized design and software calculation for the new 25 m PC track beam,the experimental data were compared with both calculated results from the self-developed software and theoretical data.The results showed that for the software-designed track beam,the measured maximum vertical deflection was 21.75 mm,the calibration coefficient was 0.89,and the deflection-span ratio was 1/1 122,while the measured horizontal deflection was 2.36 mm and the calibration coefficient was 0.72.These results met code requirements.Combining the test results under two working conditions of eccentric and central loading,the stress difference of the beam ranged from-0.51 MPa to 0.61 MPa,showing small torsional effect on the straight beam.In the cracking test,the measured cracking load was 947 kN,and the measured re-cracking load was 707 kN.This yielded an actual effective prestress of 975.26 MPa in the beam,which was slightly higher than the designed effective prestress of 972.26 MPa.The above data indicate that the automatically generated reinforcement drawings can be applied in practical engineering projects.The developed intelligent software provides technical support for the intelligent construction of the track beams in straddle-type monorail transit.关键词
单轨交通/轨道梁/优化设计/试验验证/智能建造Key words
monorail transit/track beam/optimized design/experimental verification/intelligent con-struction分类
交通工程引用本文复制引用
朱尔玉,白正伟,李嘉成,徐刚,段海东,苏国柱..跨座式单轨交通PC轨道梁优化设计、智能软件开发与试验验证[J].铁道标准设计,2025,69(6):96-105,10.基金项目
国家自然科学基金项目(52172335) （52172335）
