, a boundary integral equation for crack problem is derived. ... both displacement boundary integral equation and traction boundary integral equation of solids with cracks ... By using the boundary element modeling, the progressive fractures of concrete beam and compact-tension
However, it can be seen the concrete between cracks will contribute to carrying a part of the tension ... In strength limit states design, it is assumed that after cracking, reinforcement carries all tension ... 그러나 균열 사이의 콘크리트가 실제 콘크리트 부재에서는 특히 사용하중 수준에서의 어느 정도의 인장 응력을 견디는데, 일조 하는 것으로 보고 있다.
crack. ... PPS(Post-tensioned Precast concrete System)공법은 U자형 PC로 제작된 넓은 보와 PC또는 현장 타설 콘크리트로 제작한 기둥으로 구성되며, PC보와 ... Post-tensioned precast concrete system (PPS) consists of U-shaped precast wide beams and concrete column
in shear mode caused by wheel load in asphalt concrete overlaid on the deteriorated cement concrete ... This study was conducted to develop a test system for evaluating resistance against reflection cracking ... in terms of the difference in the resistance against reflection cracking.
The fatigue cracking and reflection-cracking were predicted for three cases: 1) fiber grid was not used ... METHODS : The reflection cracking, roughness, and rutting of fiber grid reinforced overlay sections and ... RESULTS : The reflection-cracking ratio of fiber grid reinforced sections was much smaller than that
of asphalt concrete. ... cracking in asphalt pavements. ... and predicted crack growth lives, which implies that the energy based J integral could be a better parameter
The function of fiber in concrete is to improve the stress strain relation and toughness, crack control ... It is a well known that concrete is strong for compression and weak for tension. ... So, this study evaluated the ultra-high performance concrete with mixed in composite fiber.
Joints in jointed concrete Pavement are designed to control against randomly occurred cracks within slabs ... The advantage of these artificial cracks (joints) over naturally occurred cracks are easy access of protections ... Possible cause for joint freezing is that designed penetrated cracks do not occur at a joint.
This study is about a crack diagnosis system mounted on a wall-climbing drone developed to detect crack ... The proposed technique for estimating the location of crack damage based on the pixel coordinates in ... 본 연구는 수직 벽체형 콘크리트 구조물의 정밀안전진단을 위한 외관조사시 고품질 정밀영상을 자동화된 방식으로 획득하여 균열손상을 탐지하고 시설물의 상태를 평가하기 위하여 개발된 등벽드론
The fracture behaviour of concrete gravity dam mainly due to uplift pressure acting at the crack face ... 콘크리트 중력댐 상부면의 균열에 작용하는 수압의 영향을 주로 고려하여 댐의 파괴거동을 조사하였다. ... Third, critical crack lengths according to the uplift pressure distribution under the overflow depth
The joints in the jointed concrete pavement provide a control against transverse or longitudinal cracking ... Without control of cracking, random cracks cause more serious distresses and result in structural or ... of subgrade reaction(K) and the modulus of dowel/concrete interaction(G), and limiting criteria on the
load capacity, nonlinear deformation, and pinching effect due to crack opening and closing. ... , and
shear walls, whose failure occurs due to compressive crushing after extensive crack propagation ... reinforced concrete beams which have brittle failure.
강섬유 보강 철근콘크리트보(SFRC; Steel Fiber Reinforced Concrete)의 복잡한 파괴역학적 성질에 의한 불확실성 통이 내재되어 있다. ... or to control the width of crack and improve the load resistible capacity at the same time. ... Methods for mixing variable types of steel fibers have been developed recently to suppress outbreak of crack
of reflection cracking. ... 반복하중 하에서 균열이 있는 시멘트 콘크리트 위에 부착된 아스팔트 콘크리트 공시체 하단의 수평변위를 측정하여 각 혼합물별 균열지연에 따른 반사균열 피로수명을 추정하였다. ... In order to achieve the goal, the expedited reflection cracking test method was developed and applied
따라서, 강말뚝의 형상을 개선하기 위하여 콘크리트 교대에 매입된 부분의 플랜지를 제거하는 방법과 콘크리트 외부에서 플랜지의 폭을 축소시키는 형태를 검토하였다. ... However, it was found that delaying cracking and strengthening the connection also caused the high lateral ... The reinforcement detail specified in PennDOT DM4 and HSS tube were barely effective in controlling crack
That is, the including prestressed member is prestressed against blast load cracking and destruction ... Analysis, concrete and reinforced concrete members after an explosion occurred continuously deformed, ... can be seen that control.
Fiber reinforcement of concrete is an effective approch to the control of microcrack and crack development ... concrete using regulated-set cement than the plain concrete. ... Fibers were added and their mixtures are compared with plain high-early-strength concrete mixture.
at the post cracking stage and its contribution is implemented into the reinforcing. ... proposed analytical procedure can effectively simulate the cracking behavior of RC beams and columns ... 기둥 부재의 균열거동을 효과적으로 고려할 수 있음을 검증하였다 An analytical procedure to analyze reinforced concrete(RC) beams and
plane stress problem considering the cracking and its rotation in concrete and the yielding of the reinforcing ... , with the changing of crack direction, and the yielding of the reinforcing steel bars, and Is to introduce ... 본 논문은 콘크리트 균열방향의 회전 및 철근의 항복에 따른 2차원 R/C 구조물의 극한거동 덴 한계상태설계에 관한 연구를 다룬 것으로, 유한요소모델에 적용하여 비선형 해석 및 한계상태설계가
It can be applied to construction fields such as concrete cracks and welding defects. ... In this study, we analyzed crack recognition of sewer with low recognition. ... CNN means convolutional neural network.
