框架节点抗震性能试验研究-非地震的详细设计__Seismic_Behavior_of_Nonseismically_Detailed_Interior_Joints__Part_1.pdfVIP

ACI STRUCTURAL JOURNAL TECHNICAL PAPER Title no. 99-S80 Seismic Behavior of Nonseismically Detailed Interior Beam-Wide Column Joints—Part I: Experimental Results and Observed Behavior by Bing Li, Yiming Wu, and Tso-Chien Pan Four full-scale reinforced concrete interior beam-wide column joints Because joint dimensions have been found to have a great in- with nonseismic detailing and limited seismic detailing were fluence on the seismic behavior of joints,10 the previous designed and tested to investigate the seismic behavior of the joints findings for normal types of beam-column joints may not ap- at Nanyang Technological University, Singapore. In this first part of plicable to beam-wide column joints. * a two-part paper, experimental observation and results of tests on the four joints under quasistatic cyclic loading simulated earthquake This paper reports the experimental results of four full- actions are presented. The two variables in the test specimens were scale reinforced concrete interior beam-wide column joints, the amount of joint transverse reinforcement and the lap splice two of which were typical of wide-column moment-resisting details for column and beam reinforcement. The overall perfor- frames in Singapore and designed according to BS 8110,1 mance of each test assembly was found to be unsatisfactory in terms while the other two were modified in reinforcement details of lateral load capacity, stiffness, drift, and displacement ductility. and were tested for comparisons with the as-built ones. The Two as-built specimens failed at a low displacement ductility level, results may be seen reported in more detail elsewhere. 13 while the other two m