摘要
针对混凝土材料断裂的特点，探讨了影响断裂韧度的主要因素：尺寸效应、混凝土强度和相对缝深等。在分析１１根三点弯曲匦切口梁试验资料的基础上，结合混凝土结构强度理论，提出了混凝土断裂韧度实用计算公式。该公式可以很容易地通过人们熟知的构件尺寸和混凝土强度推算出断裂韧度，这对工程设计是有益的。
According to fracture characteristic of concrete beams,the influence of main factors such as size effect,concrete strength and relative crack length on fracture toughness is discussed.Based on analysing the test results of 11 three-point bending concrete notched beams and combined with the strength theory of concrete structure,a useful formula for calculating fracture toughness of concrete beams is put forwards.Fracture toughness can easily be calculated from this formula if the specimen dimension and concrete strength are known.This formula is quite useful for engineering design.
出处
《江汉石油学院学报》
CSCD
北大核心
1995年第1期102-105,共4页
Journal of Jianghan Petroleum Institute
关键词
混凝土
断裂
弯曲梁
梁
计算
concrete
three point bend method fracture toughness
fracture tests
dimension effect
