【作者】 王吉英；

【导师】 王清湘； 李亚木；

【作者基本信息】 大连理工大学 ， 土木工程， 2003， 硕士

【摘要】 自预应力连续刚构桥引入我国以来，经过十多年的应用，在这种桥型的设计及研究方面已经取得了令人瞩目的成就。但随着连续刚构桥跨径及桥高的不断加大，设计者也将面临越来越多的技术问题，连续刚构桥的温度效应分析便是其中一个。本文结合大深坑Ⅱ号桥的实际情况，从结构温度效应分析的有限元法出发，建立了桥梁结构计算的模型，采用同济大学桥梁工程系开发的《Dr．Bridge桥梁博士2.9版》平面杆系有限元分析程序参照英国BS5400规范、新西兰规范及我国公路桥梁设计规范分别分析了大深坑Ⅱ桥纵向的温度效应，并将结果予以对比。得出了能指导工程应用的结论：不同的温度计算模式计算结果相差较大，甚至结果可能完全相反，我国公路桥涵设计规范无论是日照升温或是骤然降温的应力计算结果均较英国BS5400规范和新西兰规范的应力计算结果小，并有较大的差距，而且与施工现场的温度测量值相差较大。文章建议对于目前阶段的连续刚构桥的温度效应计算，设计者应充分考虑我国规范的不适用性及局限性，同时参照国外相关规范进行分析计算。更多还原

【Abstract】 Since the prestressed continuous rigid frame bridges were introduce to be builted in our country, through years ,the achievment of the design and reaserch on bridge model is great. As the result of continual increase of spans and heights of bridges, designers have to have many technical problems to deal with, among which analysis of temperature effect is. The paper combines the Dashenkeng n bridge design with the method of finite elment analysis, makes computation model of bridge structure, makes use of Dr.V2.9 refering to British BS5400 and Specification of New Zealand and China, analyses temperature effect of Dashenkeng II, gets the caculate result to guide construction on site: Differences of temperature models reach different results . The result caculated according to our Specification is smaller and at a good distance off the realisty. The paper suggests that designers should consider the illogicality of our specification and design arroding to overseas relative specification .更多还原