均布荷载下锈蚀后预应力钢骨混凝土梁的滑移计算  

Slip Calculation of Corroded Prestressed Steel Reinforced Concrete Under Uniformly Distributed Load

作　　者：哈娜[1] 王连广[1] 王文浩[2] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《东北大学学报（自然科学版）》2010年第2期281-284,共4页Journal of Northeastern University(Natural Science)

基　　金：辽宁省教育厅科技攻关项目(20060708);辽宁省自然科学基金资助项目(20052019)

摘　　要：利用弹性理论,结合预应力钢骨混凝土梁的受力特征,建立了同时考虑预应力增量和钢材锈蚀率影响的滑移微分方程,给出了均布荷载下梁滑移计算的理论公式.讨论了钢骨锈蚀率、荷载、钢筋锈蚀率及预应力增量对滑移的影响,并给出了计算滑移的简化公式.计算结果表明,均布荷载下交接面的滑移随着钢骨锈蚀率和荷载的增大而增大,钢筋锈蚀率和预应力增量对梁滑移的影响相对较小.Based on the theory of elasticity in prestressed steel reinforced concrete beam, the calculate the relative slip between the surfaces combination with the loading conditions for a differential equations are given to theoretically of concrete and corroded steel under uniformly distributed load, where the prestressed increment and corrosion rates of both steel and bars are all taken into account. Discusses the influences of the corrosion rates, loading and prestressed increment on the relative slip, thus giving the simplified slip calculation formulae. Calculated results showed that the slip increases with corrosion rate of steel and loading, but the corrosion rates of bars and prestressed increment affect the slip nonobviously.

关 键 词：钢材锈蚀 预应力 钢骨混凝土梁 滑移计算 

分 类 号：TU311.41[建筑科学—结构工程]