预应力混凝土构件导电加热温度场仿真分析  

Temperature field simulation of electric heating prestressed concrete component

作　　者：蒋寅军[1] 朱永华[1] 

机构地区：[1]武汉大学土木建筑工程学院工程力学系,湖北武汉430072

出　　处：《混凝土》2011年第2期10-13,16,共5页Concrete

基　　金：国家自然科学基金(50478056)

摘　　要：对于后张法预应力混凝土施工中常见的孔道质量事故,缺少快速有效的检测方法。提出基于导电加热技术的混凝土温度场红外检测技术原理,并通过一个算例对预应力混凝土构件进行温度场仿真分析,分析结果表明,导电加热红外检测技术对于预应力混凝土孔道质量事故的检测从能耗、效率和安全性上看是可行的,但需要对通电电流进行控制,以免因为产生过高的温度而影响钢绞线和混凝土的物理力学性能。Due to lack of effective detection method,channel quality accidents of post-tensioned concrete construction cannot to be discoveredon time.Intended to put forward an infrared detection principle based on electric heating to solve the above-mentioned problem.The results of thenumeric simulation on the temperature field of a prestressed concrete component indicate that the electric heating infrared detection technology,for its energy consumption,efficiency and safety,is feasible for detecting the channel quality accidents of prestressed concrete component,but theelectric current needs to be controlled to avoid high temperature which affects the physical and mechanical properties of the strand and the concrete.

关 键 词：预应力混凝土 导电加热 温度场 红外检测 数值仿真 

分 类 号：TU528.01[建筑科学—建筑技术科学]