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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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🏛️國立陽明交通大學機構典藏

Author: search.filters.author.Chou, Chung-CheSubject: search.filters.subject.cyclic test

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Now showing 1 - 3 of 3
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    Performance evaluation of steel reduced flange plate moment connections
    (2007-11-01)
    Chou, Chung-Che
    ;
    Wu, Chia-Ching
    ;
    土木工程學系
    ;
    Department of Civil Engineering
    This study details a new moment connection that overcomes difficulties in achieving field-weld quality and eliminates steel beam buckling encountered in steel moment connections. This study presents cyclic test and finite element analysis results of full-scale subassemblies using steel reduced flange plates (RFPs) to connect steel beam flanges and the column without any other direct connection. Since the RFP connection is designed as strong column-strong beam-weak RFPs, the RFP functions as a structural fuse that eliminates weld fractures and beam buckling. Test and analytical results show that (1) the connections transferred the entire beam flexural strength to the column and reached an interstorey drift of 4% with minor strength degradation, (2) failure of the connections was owing to buckling or fracturing of the RFP and not of the beam, and (3) the RFP connection subassembly, modelled using the nonlinear finite element computer program ABAQUS, exhibited hysteretic behaviour similar to that of the flange plate (FP) moment connection subassembly. The inelastic buckling force of the RFP was also evaluated by nonlinear regression analyses performed on a nonlinear model that relates buckling force to RFP geometries. Copyright (C) 2007 John Wiley & Sons, Ltd.
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    Hysteretic model development and seismic response of unbonded post-tensioned precast CFT segmental bridge columns
    (2008-05-01)
    Chou, Chung-Che
    ;
    Hsu, Chih-Po
    ;
    土木工程學系
    ;
    Department of Civil Engineering
    The study investigated the cyclic behavior of unbonded, post-tensioned, precast concrete-filled tube segmental bridge columns by loading each specimen twice. Moreover, a stiffness -degrading flag-shaped (SDFS) hysteretic model was developed based on self-centering and stiffness-degrading behaviors. The proposed model overcomes the deficiency of cyclic behavior prediction using a FS model, which self-centers with fixed elastic and inelastic stiffnesses. Experimental and analytical results showed that (1) deformation capabilities of the column under the first and second cyclic tests were similar; however, energy dissipation capacities significantly differed from each other, and (2) the SDFS model predicted the cyclic response of the column better than the FS model. Inelastic time-history analyses were performed to demonstrate the dynamic response variability of a single-degree-of-freedom (SDOF) system using both models. A parametric study, performed on SDOF systems subjected to eight historical earthquakes, showed that increased displacement ductility demand was significant for structures with a low period and low-to-medium yield strength ratio and reduced displacement ductility demand in these systems was effectively attained by increasing energy dissipation capacity. Copyright (C) 2008 John Wiley & Sons, Ltd.
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    Seismic rehabilitation performance of steel side plate moment connections
    (2010-01-01)
    Chou, Chung-Che
    ;
    Tsai, Keh-Chyuan
    ;
    Wang, Yuang-Yu
    ;
    Jao, Chih-Kai
    ;
    土木工程學系
    Moment connections in all existing steel building located in Kaohsiung, Taiwan were rehabilitated to satisfy seismic requirements based oil the 2005 AISC seismic provisions. Construction of the building was ceased in 1996 due to financial difficulties and was recommenced in 2007 with enhanced connection performance. Steel moment connections in the existing building were Constructed by groove welding the beam flanges and boiling the beam web to the column. Four moment connections, two from the existing steel building were cyclically tested. A non-rehabilitated moment connection with bolted web-welded flanges was tested as a benchmark. Three moment connections rehabilitated by welding full-depth side plates between file column Face and beam flange inner side were tested to validate the rehabilitation performance. Test results revealed that (1) the non-rehabilitated existing moment connection made by in situ welding process prior to 1996 had similar deformation capacity its contemporary connection specimens made by laboratory welding process, (2) all rehabilitated moment connections exhibited excellent performance, exceeding a 4% drift Without fractures of beam flange groove-welded joints, and (3) presence of file full-depth side plates effectively reduced beam flange tensile strain near the column face by almost half compared With the non-rehabilitated moment connection. The connection specimens were also modeled Using the non-linear finite element computer program ABAQUS 10 further confirm the effectiveness of the side plate in transferring beam moments to the column and to investigate potential Sources of connection failure. A design procedure was made based oil experimental and analytical Studies. Copyright (C) 2009 John Wiley & Sons, Ltd.