锈蚀钢筋混凝土大偏心压弯构件承载力模型  

Bearing capacity model for corroded reinforced concrete members with large-eccentric flexure and compression

作　　者：周锡武[1] 卫军[1] 董荣珍[1] 余王景 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第3期107-109,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金重点资助项目(50538070);国家自然科学基金资助项目(50278039)

摘　　要：基于锈蚀钢筋混凝土大偏心压弯构件承载能力退化的性能,考虑锈胀力引起的钢筋周围双向应力状态,建立了锈蚀开裂前钢筋混凝土大偏心压弯构件承载力计算模型;考虑截面锈胀后几何尺寸损失,又建立了锈蚀开裂后钢筋混凝土大偏心压弯构件承载力计算模型.试验结果显示:试验值与计算值符合较好,模型可用于锈蚀钢筋混凝土大偏心压弯构件承载力计算分析.The deterioration of bearing capacity of corroded reinforced concrete members with large-eccentric flexure and compression was studied. Proposed are two bearing capacity calculation models, namely, the one for the before cracked-corroded reinforced concrete members with large eccentric flexure and compression in consideration of biaxial stress caused by corroded expansion forces around steel bar and the one for the after cracked-corroded members in consideration of section size loss. The experimental result shows that experiment data are consistent with calculated value. The model can be used in calculation of bearing capacity for corroded reinforced concrete members with large eccentric flexure and compression.

关 键 词：钢筋锈蚀 压弯构件 承载力 

分 类 号：TU528.01[建筑科学—建筑技术科学]