基于断裂理论的大体积混凝土裂缝分析

基于断裂力学理论分析大体积混凝土微裂缝的发展特性，大体积混凝土早期裂缝主要是由温度差引起的，适宜控制温度能有效遏制初期裂缝发展，从而为提高大体积混凝土结构施工期质量并减少结构内部初始微裂纹提供理论基础。研究结果表明施工期减小大体积混凝土内外温差是进一步限制裂纹生成的关键。

Analysis of the mass concrete crack based on theory of fracture

Based on the theory of fracture mechanics analysis of the development of micro cracks in mass concrete features, early cracks of mass concrete are mainly caused by temperature difference. Appropriate control of temperature cracks in the early days can effectively improve the quality of mass concrete structure during construction period and reduce the internal micro cracks initial structure which provides a theoretical basis. The results show that decrease of mass concrete during the construction, both inside and outside temperature difference is the key to further restrict the crack formation.