公路桥梁中欧规范主要荷载差异分析  

Analysis of main load difference betweenChinese and European Code for highway bridge

作　　者：刘天培[1] Liu Tianpei(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《山西建筑》2022年第23期5-9,共5页Shanxi Architecture

基　　金：中铁四院科研项目(2017k088)。

摘　　要：近年来海外基础设施建设发展迅速,国内知名设计院纷纷涉猎海外市场,掌握国际标准可以提高国内企业的竞争力。将中国公路规范(JTG D60—2015)、欧洲规范中主要荷载的大小及形式进行对比,包括汽车荷载、制动力、离心力、冲击力、土压力及温度荷载;并对比了荷载组合的异同。结论如下:欧洲规范集中力荷载和均布荷载明显高于中国规范;中国规范与欧洲规范布置不同车道数时制动力大小存在分界点,在分界点前中国规范小于欧洲规范,分界点后大于欧洲规范;欧洲规范的离心力均小于中国规范离心力,离心力差值大小随着跨径增加而减小;计算土压力时中国规范采用等代土层厚度法,欧洲规范采用附加应力法,中国规范计算结果偏安全。In recent years,with the rapid development of overseas infrastructure construction,well-known design institutes have been joined in overseas markets.Mastering international standards can improve the competitiveness of domestic enterprises.This paper compares the value and form of main loads in Chinese Code(JTG D60—2015)and European Code,including vehicle load,braking force,centrifugal force,impact force,earth pressure and temperature load,and compares the similarities and differences of load combinations.The conclusions are as follows:the concentrated force load and uniform load in Eurocode are significantly higher than those in Chinese Code;different number of lanes in Chinese Code and European Code has different dividing point,before the dividing point,the Chinese code is smaller than the European Code,and after the dividing point,it is larger than the European Code;The results show that the centrifugal force of the Chinese Code is less than that of the Chinese Code,and the difference of the centrifugal force decreases with the increase of the span;the equivalent soil thickness method is adopted in the Chinese Code,and the additional stress method is used in the European Code,and the calculation result of the Chinese Code is relatively safe.

关 键 词：欧洲规范 主要荷载 荷载组合 差异分析 

分 类 号：TU311[建筑科学—结构工程]