大跨径预应力混凝土连续刚构桥温度效应与收缩徐变效应分析桥梁与隧道工程专业论文.docxVIP

AbstractRecently，based Abstract Recently，based on the economic deVelopment of our country，many long span prestressed concrete continuous rigid frame bridges are built．With the establishment of this type bridge，many fesearches paid great attention on the temperature effects and Shrinkage·Creep analysis．The study on this field have already advanced very much，howeVer，there are few analysis about the innuence of temperature effects and Shrinkage-Creep analysis on long span prestressed concrete continuous rigid frame bridges combined with actual bridge． Based on the measurement of temperature distribution field of Xinzhaihe bridge due tO solar radiation，we Obtain the fitting curve 0f vertical tenlperature difference distribution of box girders and lognitudinal temperature difference distribution of hollow pier．Applying the soft of MIDAS／CiVil，the paper analyzed the bridge using measured temperature gradient or temperature gradient according to General Code for Design of Highway Bridge and CulVert．Through compafing the result， some conclusiOns are put fOrward． The mid-span deflection 0f continuous rigid．frame increases when the span and the ser、，ice life舒owth，this will influence passengers comfort and affect the running safety．The mid-span deflection of prestressed concrete continuous rigid frame bridges is an open question．The paper adopted the software of Bridge Doctof to analysis the innuence of sh“nkage and creep on the deflection and stress 0f bridge and Obtained some conclusiOns． 1始y Words：Temperature field；Shrinkage-creep；Long span continuous rigid frame bridges；Temperature effects Ⅲ 湖南大学 湖南大学 学位论文原创性声明 本人郑重声明：所呈交的论文是本人在导师的指导下独立进行研究所 取得的研究成果。除了文中特别加以标注引用的内容外，本论文不包含任 何其他个人或集体已经发表或撰写的成果作品。对本文的研究做出重要贡 献的个人和集体，均已在文中以明确方式标明。本人完全意识到本声明的 法律后果由本人承担。 作 啤李锈蹴p胯r眇B 学位论文版权使用授权书 本学位论文作者完全了解学校有关保留、使用学位论文的规定，同意 学校保留并向国家有关部门或机构送交论文的复印件和电子版，允许论文 被查阅和借阅。本人授权湖南大学可以将本学位论文的全部或部分内容编 入有关数据库进行检索，可以采用影印、缩印或扫描等复制手段保存和汇 编本学位论文。 本学位论文属于 1、必威体育官网网址口，在 年解密后适用本授权书。 2、不必威体育官网网址匦。 (请在以上相应方框内打“／”) 作者签名： 日期时年，月