新、旧《公路桥涵设计通用规范》中汽车荷载作用的比较分析  

Compare and Study on Vehicle and Lane Loading Effect of New and Old《General Specifications for Design of Highway Bridges and Culverts》

作　　者：刘兵 潘芳 

机构地区：[1]中设设计集团股份有限公司,江苏南京210004 [2]江苏东交工程设计顾问有限公司,江苏南京210002

出　　处：《现代交通技术》2017年第3期57-61,共5页Modern Transportation Technology

摘　　要：2015年实施的《公路桥涵设计通用规范》(JTG D60—2015)将各等级公路的设计荷载及安全等级等进行重新修订。修订后原有部颁空心板通用图在新标准下适用度及已建的各等级公路中小跨度桥梁安全度,一直被设计者和桥梁管养部门所关心。文章以部颁的10 m、13 m、16 m、20 m标准跨径的部分预应力混凝土空心板为研究对象,通过对比空心板跨中承载能力的变化,评价已建成的中、小跨径空心板安全度。研究表明10 m、13 m跨径空心板的部分中、边板通用图已不能适应新规范的变化;已建成的二、三、四级公路上的中桥及二级公路上的小桥的承载能力已无法满足新规范的要求。The design load and safety grade of all highway have been revised in ＂General Specifications for Design of Highway Bridges and Culverts＂ （JTG D60-2015）which has implemented in 2015.The applicability of the old general drawing of concrete hollow slab published by the MOC to the new standards and the safety degree of moderate or short span bridges which have been constructed in all highway is always concerned by designer and bridge management. This paper contrasts the change of carrying capacity of the mid-span based on contrasting the changes of the old and new specifications by taking the partial prestressed concrete hollow slab on which the standard span is equal to 10, 13,16,20 metres published by the MOC as the research object. The results show that some medium and side plate of hollow slab on which the standard span is equal to 10, 13 metres can not adapt to the changing of the specifications, the carrying capacity of moderate span bridges which have been constructed in second, third and fourth class highways and the carrying capacity of short span bridges which have been constructed in second class highways can not meet the demand of the new specifications.

关 键 词：桥梁工程 设计规范 车道荷载 承载能力 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]