力素比对预应力混凝土复合受力构件强度及破坏形态的影响  

Influence of forces ratio on PC members under combined force

作　　者：王岚[1] 刘霖[1] 许克宾[2] 

机构地区：[1]内蒙古工业大学建筑工程学院,内蒙古呼和浩特010062 [2]北方交通大学土木建筑工程学院,北京100044

出　　处：《长安大学学报（自然科学版）》2003年第6期56-59,共4页Journal of Chang’an University(Natural Science Edition)

摘　　要：构件的受力特征及承载力大小与许多因素有关,当构件其他内在因素不变时,力素比对构件的强度及破坏形态有很大影响。以预应力混凝土构件在弯、剪、扭复合受力下的板-桁模型理论为基础,按照力的平衡、力矩平衡、变形协调及材料本构关系等建立了相应的计算方程及全过程分析程序。利用此方法分析了在小扭弯比情况下,不同力素比对复合受力构件强度及破坏形态的影响,经试验值和理论值对比符合情况较好。The mechanics characteristics of prestressed concrete members under combined forces are very complicated.The destructive characteristics and bearing capacity of members deal with many factors. The forces ratio has a great influence to the members. Based on the platetruss model theory of prestressed concrete members under combined forces,the calculating formulas were established, and its computer program was compiled according to the conditions of equilibrium of forces, compatibility of deformation and constitutive relationship of material. The influence of forces ratio on PC members under combined forces was carried out. The theory values agree very well to the experimental ones.

关 键 词：预应力混凝土 力素比 强度 板-桁模型 结构工程 复合构件 破坏形态 

分 类 号：TU378.1[建筑科学—结构工程]