Analysis Of Temperature Effect On High And Long Continuous Rigid Frame Bridge

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 .