@article{2ce9d9b57f9c4beead4dbd0044ad4c9a,
title = "Experimental investigation of the cyclic behavior of nodes in diagrid structures",
abstract = "The diagrid nodes that are designed to be installed in the Lotte Super Tower located in Seoul, South Korea were examined experimentally. This paper aims to investigate the cyclic behavior of the diagrid nodes under lateral loads, such as wind load or seismic load and to suggest the details and welding methods of nodes for application to an actual building based on test results. Two types of specimens were developed and tested cyclically. The PA type utilized an open-section layout for the node, whereas the PB type utilized a box-section layout for the node. Based on the test results, the cyclic performance for diagrid nodes was discussed with an emphasis on the initial stiffness, strength, and welding methods.",
keywords = "Cyclic test, Diagrid node, Hysteretic behavior, Welding method",
author = "Kim, {Young Ju} and Kim, {Myeong Han} and Jung, {In Yong} and Ju, {Young K.} and Kim, {Sang Dae}",
note = "Funding Information: This research (06R&D C21) was financially supported by the Ministry of Construction & Transportation of the South Korea, the Korea Institute of Construction and Transportation Technology Evaluation and Planning and National Research Foundation of Korea . ( 2010-0000618 ), ( 2010-0076892 ). The authors are grateful to these authorities for their support. Also we would like to express our sincere gratitude to the support of Lotte E&C, RIST, Haesung Kigong, and Jeon & Partners. Funding Information: This study forms part of a research program on the development of structural design and construction technology for diagrid systems (06R&DC21) supported by the Ministry of Construction & Transportation of Korea [8] , which was motivated by the Lotte Super Tower project. The Lotte Super Tower is a unique form that is transformed from a 70 meter square footprint to a 39 meter diameter circle at 555 meters above ground. In this building, a dual system comprised of an exterior steel diagrid and an interior reinforced concrete core is utilized for lateral resistance to wind and seismic effect [9] . As part of this research program, diagrid nodes, which are designed to be installed in the Lotte Super Tower, were firstly tested under monotonic axial loading (compression test and tension test), as shown in Fig. 4 [6,8] . Monotonic test results showed that the plastic mechanism of the node under a compressive force formed at the node core, with a local buckling of the core flange and web ( Fig. 4 (a)), whereas when nodes are subject to the tensile force, tensile failure occurred at the node core ( Fig. 4 (b)). ",
year = "2011",
month = jul,
doi = "10.1016/j.engstruct.2011.03.004",
language = "English",
volume = "33",
pages = "2134--2144",
journal = "Engineering Structures",
issn = "0141-0296",
publisher = "Elsevier BV",
number = "7",
}