某景区人行玻璃索桥荷载试验及安全评估
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摘要
为保证某景区人行玻璃索桥的安全运营,通过桥梁表观检查,有限元建模分析,荷载工况设计,现场加载测试,对桥梁进行了静载试验。通过桥梁自振特性有限元分析和基于脉动法的桥梁动力特性测试对桥梁动力性能进行了试验和分析,并对桥梁的动力刚度进行了研究。最终根据试验结果对桥梁的安全性进行了评估。结果表明,该人行玻璃索桥在满足设计要求的试验荷载作用下刚度和强度满足规范和设计要求,结构基本处于弹性工作状态,受力和工作性能满足安全使用的要求。
In order to ensure the safe operation of a pedestrian glass suspension bridge in a scenic spot.The static load test of the bridge was carried out by means of the bridge apparent inspection,finite element modeling analysis,load working condition design and field loading test.The dynamic performance of bridge is tested and analyzed by finite element analysis of bridge self vibration characteristic and dynamic characteristic test of bridge based on pulsating method,and the dynamic stiffness of bridge is analyzed.Finally,the safety of the bridge is evaluated based on the test results.The results show that the stiffness and strength of the glass suspension bridge can meet the specifications and design requirements under the test load,while the structure is basically in the flexible working state,and the stress and the working performance meet the requirement of safe use.
In order to ensure the safe operation of a pedestrian glass suspension bridge in a scenic spot.The static load test of the bridge was carried out by means of the bridge apparent inspection,finite element modeling analysis,load working condition design and field loading test.The dynamic performance of bridge is tested and analyzed by finite element analysis of bridge self vibration characteristic and dynamic characteristic test of bridge based on pulsating method,and the dynamic stiffness of bridge is analyzed.Finally,the safety of the bridge is evaluated based on the test results.The results show that the stiffness and strength of the glass suspension bridge can meet the specifications and design requirements under the test load,while the structure is basically in the flexible working state,and the stress and the working performance meet the requirement of safe use.
引文
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[2]刘箐霖,梁仁鸿.悬索桥发展概述及展望[J].交通世界(运输车辆),2015(5):98-100,103.
[3]周玉龙.山区人行悬索桥初步设计研究[D].杭州:浙江大学,2010:1-5.
[4]陈政清,雷旭,华旭刚,等.大跨度山区悬索桥的悬架技术应用与研究[J].湖南大学学报(自然科学版),2016,43(1):1-10.
[5]黄祖华.某地锚式悬索桥施工监控研究[J].水利与建筑工程学报,2016,14(5):194-197.
[6]毛应飞.人行索桥荷载试验验证探索与研究[J].黑龙江交通科技,2013,36(9):161-163.
[7]黄学漾.景区人行索桥检测方法研究[J].福建交通科技,2017(3):71-75.
[8]李万恒,王元丰,李鹏飞,等.三塔悬索桥荷载试验研究[J].公路交通科技,2017,34(1):61-66.
[9]何旭辉,周蕾,邹云峰.张家界大峡谷玻璃桥静载试验研究[J].铁道科学与工程学报,2018,15(4):970-978.
[10]辛付开,韩依璇,张国荣.某在役悬索桥平行钢丝主缆检查及腐蚀规律研究[J].水利与建筑工程学报,2017,15(3):119-122.
[11]胡帮义,许波,袁向荣.基于Midas的人行天桥静动力分析及试验检测评估[J].黑龙江交通科技,2015,38(5):73-75.
[12]祁志刚.多塔悬索桥静动力特性及结构体系适宜性研究[D].北京:北京建筑大学,2014:21-22.
[13]周君嵩,陈晟.景区人行索桥的检测和评估[J].世界桥梁,2013,41(3):81-84.
[14]可路,王达磊,陈艾荣.景区大跨径人行索桥人致振动响应研究[J].公路交通科技,2013,30(3):101-105.
[15]余加勇,邵旭东,孟晓林,等.基于自动型全站仪的桥梁结构动态监测试验[J].中国公路学报,2014,27(10):55-63.