随机再生骨料增强混凝土受压应力_应变关系_罗冬梅.pdfVIP

33 1 2014 1 Vol.33 No.1 Journal of Liaoning Technical UniversityNatural Science Jan. 2014 1008-0562(2014)01-0088-06 doi:10.3969/j.issn.1008-0562.2014.01.018 - 1 1 2 3 1. 528000 2. 434000 3. 510006 ANSYS APDL AUTOCAD - . - TU 528 A Numerical simulation of stress-strain relationship for concretes with randomly recycled aggregates under unit-axial pressure 1 1 2 3 LUO Dongmei , YANG Hong , XIAO Yiying , LI Bangding 1.Department of civil engineering, Foshan University, Foshan 528000, China; 2.Department of Mechanical Engineering, Jinzhou Mechanics and Electronics Industry School, Wuhan 434000, China; 3.Department of civil and Transportation, South University of Technology, Guangzhou 510006, China Abstract: In order to study the mechanical properties of recycled concrete, a three-phase microscopic composites model with random recycled aggregates, interface and cement mortar was constructed by combining the APDL technology in ANSYS with geometrical function in AUTOCAD in this paper. A constitute equation with non-linear damage was established to simulate the fracture process of recycled concretes, and the influence of interfacial strength and damage parameters on the compressive strength of recycled concrete materials was investigated. The strain softening was shown in stress-strain relationship, which has better con