关于举办美国休斯敦大学(University of Houston) 莫怡隆(Yi-Long Mo)教授学术讲座的通知
发布时间: 2018-08-01

题目:用于钢筋混凝土结构抗震性能评价的壳单元新进展/Development of Shell Element for Seismic Performance Evaluation of RC Structures

时间:201808089:3011:00

地点:华南理工大学7号楼二楼报告厅

报告人:莫怡隆(University of Houston

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                     土木与交通学院

                      201881

报告人简介:

Professor Y.L. Mo is Professor in Department of Civil Engineering and Environmental Engineering, University of Houston, Houson, Texas and Director of Thomas T.C. Hsu Structural Research Laboratory (2003-2016). His expertise is in the behavior of concrete and prestressed concrete structures. Dr. Mo is a member of ACI Committee 369, Seismic Repair and Rehabilitation, and Joint ACI-ASCE Committee 445, Shear and Torsion and Joint ACI-ASCE Committee 447, Finite Element Analysis of Concrete structures. He has performed many research projects on advanced/smart materials and structures, multi-scale simulation, full-scale structural testing, etc. Dr. Mo holds 8 US and international patents in structural engineering.

  

报告摘要:

Reinforced concrete (RC) shell structures have been widely used in a variety of modern engineering applications. It is found from the earthquake reconnaissance that the RC shell structures, such as nuclear containments, cooling towers, roof domes, shear walls, are the key elements to resist earthquake disturbances. This research presents the development of a finite element analysis (FEA) program to predict the inelastic behavior of RC shell structures. In the program, a new shell element, so-called CSMM-based shell element, was developed based on the formulation of the degenerated shell theory with layered approach and taking into account the Cyclic Softened Membrane Model developed at the University of Houston. An analysis procedure was developed to perform nonlinear analyses of RC shell structures using the developed CSMM-based shell element. To develop the FEA program, the developed shell element and the proposed analysis procedure were implemented into a finite element program development framework, OpenSees, which was developed at University of California, Berkeley. Several large-scale structural tests were used to validate the developed FEA program, including panels subjected to pure shear or combination of shear and bending, three-dimensional (3D) RC shear wall, cylindrical RC tanks, and circular and rectangular RC hollow bridge columns. More importantly, the versatile application of the developed finite element analysis program SCS-3D was further investigated by the modeling of two 1/13-scaled nuclear containment vessel specimens and a two-story unsymmetrical RC building subjected to reserved cyclic loadings. Both test programs were undertaken as part of an international collaboration projects between the National Center for Research on Earthquake Engineering (NCREE) in Taipei, Taiwan, and the University of Houston (UH), Houston, Texas. The experimental work was performed at NCREE, and the specimen design and study of the experimental results were performed at UH.