钢骨高强混凝土受弯构件非线性分析  

Nonlinear Analysis of Flexural Members of Steel Reinforced High-Strength Concrete

作　　者：慕光波[1] 王连广[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2006年第5期571-574,共4页Journal of Northeastern University(Natural Science)

基　　金：辽宁省自然科学基金资助项目(2001101012)

摘　　要：为进一步研究钢骨高强混凝土受弯构件的工作性能,通过基于平截面假定的有限条带法,对其在单调荷载作用下的整个受力过程进行分析,计算得到弯矩与曲率、荷载与变形的关系曲线,以及混凝土强度、含钢率对荷载-变形的影响曲线·研究表明,当外荷载为极限荷载的14%左右时,钢骨高强混凝土构件受拉区混凝土开裂;在相同荷载条件下,钢骨高强混凝土构件的延性比钢骨普通混凝土构件的有所降低;在相同变形条件下,随着含钢率的增加,钢骨高强混凝土受弯构件的承载能力得到显著提高·To investigate further the working performance of flexural members of steel-reinforced high-strength concrete under monotonic loading, a full-range nonlinear analysis is made through the finite ribbon method based on flat section assumption. By computation, the moment-curvature and load-deformation relationships are obtained, as well as those among concrete strength, volumetric percentage of steel, load and deformation of a fiexural member. It is obvious that a concrete member cracks in tensional area as the external load comes to 14% of its ultimate load or so. On the same loading condition the ductility of the member is less than that of conventional steel-reinforced concrete members. However, on the same deformation condition, the bearing capacity of the flexural members of steel-reinforced high-strength concrete increase obviously with the increasing volumetric percentage of steel.

关 键 词：钢骨 高强混凝土 受弯构件 有限条带法 非线性分析 本构模型 

分 类 号：TU311.41[建筑科学—结构工程]