摘要
对混凝土结构受力裂缝,及对混凝土温降、气干变形在外部、内部约束下引发的各不同的收缩裂缝,作了简明的开裂机制分析;在此基础上,针对各不同的致裂要素,从配置钢筋与混凝土的材料选配、施工技术、分段设缝等几个方面阐释了裂缝防控技术要点也简介了对传统控温防裂做法有所补充发展的新概念———"致裂温度":为配合做好混凝土裂缝防控工作提供启迪、参考。
The cracking mechanisms of concrete structures under external load,temperatue gradient and drying shrinkage are analysed in this paper.Based on the analysises,the factors which may influence cracking of concrete structures,including steel reinforcement,material selections,construction techniques such as constructing section by section,are discussed.The principal aspects,which control cracking of concrete structures are presented.In addition,a new concetp called 'cracking temperature' which can supplement to the conventional method of temperature cracking contror is proposed.The work may provide a useful reference for cracking control of concrete structures.
出处
《混凝土》
CAS
CSCD
2003年第5期3-14,17,共13页
Concrete
关键词
混凝土工程
裂缝
“致裂温度”
裂缝防控
concrete structure
crack
cracking temperature
cracking control
