논문 상세보기
pp.106-112
This paper presents a mathematical model derived from the upper-bound theorem of concrete plasticity to rationally evaluate the shear friction strength of concrete interfaces with a construction joint. The upper limit of the shear friction strength was formulated from the limit state of concrete crushing failure on the strut-and-tie action along the construction joints to avoid overestimating the shear transfer capacity of a transverse reinforcement with a high clamping force. The present model approach proposed that the cohesion and coefficient of friction of concrete can be set to be 0.27(fck)0.65 and 0.95, respectively, for rough construction joints and 0.11(fck)0.65 and 0.64, respectively, for smooth ones, where fck is the compressive strength of concrete. From the comparisons with 155 data compiled from the available literature, the proposed model gave lower values of standard deviation and coefficient of variation of the ratios between predictions and experiments than AASHTO and fib 2010 equations, indicating that the proposed model has consistent trends with test results, unlike the significant underestimation results of such code equations in evaluating the shear friction strength.
1. 서 론
2. 시공줄눈 면에서 전단마찰 내력 모델
2.1 시공줄눈 면의 전단 마찰내력
2.2 전단마찰내력의 상한 값
3. 제안모델과 실험결과의 비교
3.1 기존 실험결과 데이터베이스
3.2 제안모델과 실험결과의 비교
4. 결 론
감사의 글
References
