摘要
本文通过对某小区高层剪力墙建筑典型开裂楼板温差作用下的有限元计算,分析了楼板板角45°斜裂缝形成的受力机理,阐述剪力墙墙体与楼板混凝土的收缩差及因环境温度变化在楼板中所引起的温度收缩应力是板角开裂的主要原因,并提出温度裂缝控制的设计和施工建议。
In this paper,the finite element model is established to analysis the reason and the force-mechanism of the 45°diagonal cracks in the cast-in-place slab of high-rise shear-wall structure.The conclusion that the temperature shrinkage stress caused by concrete shrinkage and temperature difference between the walls and floors is the main reason for cracks is obtained.And then,Some corresponding suggestions on crack-control are recommended.
出处
《福建建设科技》
2010年第4期41-42,37,共3页
Fujian Construction Science & Technology
关键词
斜裂缝
现浇板
温度应力
收缩应力
裂缝控制
inclined cracks
cast-in-place concrete slab
temperature stress
shrink stress
cracks control
