欧洲规范中公路桥梁设计活载分析

Analysis of Live Load of Highway Bridge Design in Eurocode

为了在海外工程中能够合理应用欧洲规范进行公路桥梁的设计,对欧洲规范公路桥梁设计中的汽车荷载、汽车制动力、汽车离心力、风荷载和温度荷载等活载计算进行分析,并比较了其与《公路桥涵设计通用规范》(JTG D60-2004)(简称中国规范)对该类荷载计算方面的异同。以某3×16 m钢筋混凝土简支梁桥为例,分别采用欧洲规范和中国规范进行相关荷载计算并对比分析,结果表明2种规范在活载计算上是有所差异的:欧洲规范的理论性更强,偏重于理论、原理和概念;中国规范还有一些计算采用习惯做法和经验数据。

To rationally apply the Eurocode to the highway bridge design in overseas projects, the live loads in highway bridge design in Eurocode, such as the vehicle load, vehicle braking force, vehicle centrifugal force, wind load and temperature load, were analyzed and were compared to the differences and similarities of the live loads in the calculation in General Code for Design of Highway Bridges and Culuerts （JTG D60--2004） （simplified as Chinese Code）. By way of example of a 3）〈 16 m reinforced concrete simply-supported beam bridge, the contrastive analysis of the related load calculation was conducted in accordance with both the Eurocode and the Chinese Code. The results of the analysis indicate that there is difference between the two codes in the live load calculation. The Eurocode is more theoretical, which focuses on the theory, principle and concept, while in the Chinese Code, there is still some calculation conducted based on the practice and experience data.