无粘结预应力混凝土连续板中跨受火试验研究  

Experimental Investigation of the Behaviors of Unbonded Pretressed Concrete Continuous Slabs for the Middle Span Upon Fire

作　　者：高立堂[1] 董毓利[1] 袁爱民[1] 

机构地区：[1]青岛建筑工程学院,266033

出　　处：《建筑结构》2004年第8期49-52,共4页Building Structure

基　　金：国家自然科学基金 (5 0 1780 3 4);国家自然科学基金重大国际合作研究项目(5 0 3 2 0 12 0 15 6);国家重点基础研究专项经费(2 0 0 1CB40 960 3 )资助

摘　　要：对无粘结预应力混凝土连续板在中跨受火下的反应进行试验研究 ,得出了板的温度场分布、板的变形情况及支座反力的变化情况 ,并得出了负弯矩钢筋长度、预应力度对无粘结预应力混凝土连续板的影响。The behavior of continuous slabs of unbonded prestressed concrete with the middle span under fire are investigated. From the test results, the regularities of temperature field and deformation are presented. The effects of different lengths of negative moment reinforcement and prestressing level on the behavior of the slabs are also suggested.It provides a basis for further research to explore fire behavior of prestressed concrete structures with unbonded tendon.

关 键 词：无粘结预应力混凝土 连续板 火灾 预应力度 支座反力 温度场 

分 类 号：TU378.5[建筑科学—结构工程]