大件运输车辆通行高速公路装配式连续梁桥影响参数分析

Analysis of Influencing Parameters of Heavy Transport Vehicles Passing through Prefabricated Continuous Girder Bridges on Expressway

大件运输车辆参数主要包括轴距、轴重、轴数及总重,针对大件运输车辆的可变参数研究能够帮助验算人员快速选择大件运输车辆形式,提升安全评估效率,目前对大件运输车辆参数分析研究较少。通过对大件运输车辆轴距、轴重、轴数3个重要参数的研究,分析其对预应力混凝土预制装配式箱梁桥的影响,得出20 m装配式连续梁桥受参数变化影响相对最小,且最小负弯最有可能成为大件运输安全通行的控制参数。

The main parameters of the heavy transport vehicle include wheelbase,axle load,axle number,and total weight.Analysis focusing on the alterable parameters of the heavy transport vehicle can help the checking personnel quickly choose the form of the heavy transport vehicle to improve the safety evaluation efficiency.However,currently,research on the parameter analysis of heavy transport vehicles is still rare.This paper studied three important parameters of the wheelbase,axle load,and axle number to analyze the influence on the prestressed concrete prefabricated box girder bridge.In conclusion,the 20⁃meter prefabricated continuous girder bridge was relatively least affected by the parameter change,and the minimum negative bend was most likely to become the control parameter for the safety traffic of heavy transport vehicles.