摘要
沼河渡槽槽身设计采用三槽一联大跨度预应力钢筋混凝土结构,渡槽接近正南北走向,夏季受太阳辐射影响,槽身侧墙表面升温较高,而太阳辐射对槽内水体的影响则不大,造成槽身结构内外较大温差,使槽身横向结构产生较大的温度应力。文章对各种条件下的温度影响进行了分析,结合槽身结构耐久性要求,提出采用保温防水材料,消减太阳辐射升温的影响,使槽身迎水结构的设计满足一类全预应力的要求。并根据温度场的分布特点,对工程运行管理提出指导性意见,从而保证结构的运行安全和耐久性要求。
The temperature influence under all conditions is analyzed in this paper. And the watertight and heat insulating material is presented to reduce the influence of the sun radiation. It can adapt to the demand of the structure endurance and can meet the challenge of the first full prestressing. Based on the distribution characteristics of the temperature field, the guiding notion about project operation is presented, which can guarantee the safety in operation and endurance.
出处
《南水北调与水利科技》
CAS
CSCD
2006年第3期22-24,33,共4页
South-to-North Water Transfers and Water Science & Technology
关键词
温度边界
温度应力
保温隔热材料
temperature boundary
temperature stress
the insulating material
