碾压混凝土拱坝双向相邻诱导缝断裂试验分析

针对碾压砼拱坝诱导缝双向相邻布置结构的力学问题，进行了不同削弱度的碾压砼试件轴拉试验，根据试验结果，考虑双向相邻诱导缝的影响，得到了用于诱导缝断裂分析的双参数等效强度的修正系数，并对沙牌碾压砼拱坝的诱导缝双向相邻布置结构的相对等效强度进行了计算分析，计算结果充分地反映了诱导缝的双向相邻布置对其等效强度的影响，说明坝体中诱导缝的双向相邻布置在温度应力场的作用下更容易开裂。

Fracture Experiment Analyses on Bilateral Adjacent Induced Joints RCC Arch Dam

For the mechanical problem of bilateral adjacent induced joints on RCC arch dam, a series of different degree of weakening of RCC axial tension tests were carried out, according to results, considering the impact of bilateral adjacent induced joints, we got the double parameters correction factor of the analysis of inducing joints. We calculated the relative equivalent strength of bilateral adjacent induced joints structure of ShaPai RCC arch dam, whose results reflect the impact of the bilateral adjacent induced joints to strength. The result also explained that the bilateral adjacent induced joints crack more easily under the temperature stress.