Research on Anti-Crack Design of Super-Long Concrete Structure

Abstract

There are many reasons for cracks at super-long concrete, which may be due to factors such as tensile stress and temperature shrinkage. Combined with the existing research and in-depth analysis from multiple angles, the causes of mass concrete cracks and the design method of temperature post-casting zone are described. Finally, related technical suggestions and supplementary measures were also put forward. At present, the anti-crack design of super-long concrete structures is mainly based on experience. Structural measures are used. The comprehensive effect lacks check and review. Even if the maximum crack width is checked, the load effect of concrete forming and cool shrinkage is basically not combined. For different requirements, an appropriate crack controlled standard is selected, and the maximum crack width limit of concrete specifications is generally used as the upper limit.