摘要
混凝土结构在温度和收缩作用下的间接应力与构件的刚度有关,当混凝土出现裂缝后,构件轴向刚度降低,内力也随之下降,但该方面的研究仍然处于定性阶段。对混凝土梁在降温和收缩作用下混凝土应力的发展进行了模拟,采用迭代法求解梁开裂后的内力和刚度的折减,得到的结论可供设计者参考。
The concrete stress caused by temperature variation and shrinkage is related with the stiffness of the member. When cracks occur on a reinforced concrete beam due to temperature and shrinkage, the axial stiffness will drop, and so will do the internal force. Research into this field is still qualitative so far. The development process of concrete stress under temperature decrease and concrete shrinkage was simulated, and iteration method was used to solve the reduction of internal force and axial stiffness. And some reasonable results were also got, which were worth consulting.
出处
《工业建筑》
CSCD
北大核心
2006年第5期13-15,98,共4页
Industrial Construction
基金
教育部高等教育学校骨干教师项目资助
关键词
温度
收缩
徐变
开裂
轴向刚度
折减
temperature shrinkage creep crack axial stiffness reduction
