摘要
高架渡槽跨下公路高速行驶重载车辆会对其上部渡槽结构产生动力作用并影响其稳定性。因此,本文模拟测试了渡槽跨下公路上重载车辆单车行驶和多车间隔依次以不同车速行驶,紧急刹车、起伏路面和冲击路面等多种工况,以考察道路及渡槽结构的响应。采集分析了重载车辆产生的渡槽结构与路基代表测点的加速度响应以及试验道路与渡槽之间的相对动态变形。结果表明,在高架渡槽跨下公路上行驶的重载车辆在渡槽结构上所产生的加速度和变形都很小,无论在正常行车工况还是非正常极端工况,都不足于影响到渡槽稳定性。
The high-speed driving of heavy vehicles under the elevated aqueduct will have a dynamic effect on the upper aqueduct structure and affect its stability.Therefore,it is necessary to analyze and evaluate the safety and stability of the aqueduct and its supporting structure.We simulated and tested the structural responses of heavy vehicles traveling on the highway under elevated aqueduct at different speeds,and also simulated the abnormal extreme conditions of emergency braking,uneven undulating road surface and impacting road surface to investigate the influence of emergency on the stability of aqueduct structure.Under these test conditions,the acceleration response of the aqueduct structure and roadbed resulted from heavy-duty vehicles,as well as the relative dynamic deformation between the aqueduct joints,are collected and analyzed.The results of field simulation test show that the acceleration and deformation of heavy duty vehicles on the aqueduct structure are very small,which is not enough to affect the stability of the aqueduct either in normal driving conditions or in abnormal extreme conditions.
作者
何建涛
曾新翔
HE Jiantao;ZENG Xinxiang(State Nuclear Electric Power Planning Design&Research Institute Co.,Ltd.,Beijing 100095,China;Earthquake Engineering Research Centre,China Institute of Water Resources and Hydropower Research,Beijing 100048,China)
出处
《水利水电技术（中英文）》
北大核心
2021年第S02期180-186,共7页
Water Resources and Hydropower Engineering
基金
国家重点研发计划(2017YFC0404906)
国家自然科学基金资助项目(51679265)
中国水利水电科学研究院“十三五”重点专项(EB0145B412016)
关键词
现场振动测试
高架渡槽
车辆荷载
动力响应
field vibration test
elevated aqueduct
vehicle load
dynamic response
