线性地下工程大体积混凝土抗裂技术措施研究  

Cracking Resistance Technology Measures for Large Volume Concrete in Linear Underground Engineering

作　　者：王鑫 WANG Xin(Power China(Guangzhou)Rail Transit Construction Co.,Ltd.,Guangzhou Guangdong 510200,China)

机构地区：[1]中电建(广州)轨道交通建设有限公司,广东广州510200

出　　处：《工程质量》2024年第S01期95-98,共4页Construction Quality

摘　　要：国内线性地下工程混凝土结构出现的渗漏水质量通病比较普遍,它直接影响到结构的安全性和耐久性。针对地下工程大体积混凝土开裂机理,分析混凝土开裂主要原因,研究降低温度应力与收缩应力、应力释放与应力约束,通过抗裂设计优化、混凝土抗裂配合比优化、施工养护等技术措施,达到综合技术最优。The water seepage and leakage quality disease of domestic linear underground engineering concrete structure is relatively common,which directly affects the safety and durability of the structure.In view of the cracking mechanism of mass concrete in underground engineering,we analyze the main causes of concrete cracking,study the reduction of temperature stress and shrinkage stress,stress release and stress constraint,and achieve the optimal comprehensive technology through the optimization of anti-cracking design,optimization of concrete anti-cracking proportion,construction and maintenance and other technical measures.

关 键 词：大体积混凝土 抗裂 温度应力 收缩应力 技术措施 

分 类 号：TU755[建筑科学—建筑技术科学]