Nonlinear finite element analysis of prefabricated replaceable artificial plastic hinges
WU Chenglong1, SHANG Yuqing1, ZHENG Lingfeng1, WANG Qihui1, PAN Hao1, ZHAO Fei2, WANG Ming2
1. School of Civil Engineering, Qingdao University of Technology, Qingdao, Shandong 266033, China； 2. Beijing Urban Construction North Group Co., Ltd., Beijing 101301, China
Abstract：To improve the seismic performance of prefabricated frame joints, based on bionics design, the replaceable artificial plastic hinge connection structure with the function of structural "fuse" was proposed, and nine replaceable artificial plastic hinge specimens with different parameters were designed. The low cyclic reciprocating load was applied to the replaceable artificial plastic hinge by Abaqus to investigate the seismic characteristics of the structure, such as failure mode, hysteretic performance and stiffness degradation. The results show that the failure position of the replaceable artificial plastic hinge structure is mainly concentrated at the flange buckling replaceable connecting plate, and the failure modes are flange buckling of replaceable connecting plate and shear deformation failure of shear dissipating rod. The hysteresis curve of beam end moment-angle is full with bolt slip phenomenon. The equivalent viscous damping coefficient is 0.30-0.45 with the ductility coefficient of 3.64-14.00, which illuminates that the proposed plastic hinge has good plastic deformation and energy-dissipation capacity.
WANG Z B, HE Y Y, YAN J, et al. Seismic perfor-mance analysis of welded steel mortise and tenon joint assembled concrete columns [J]. Journal of Nanjing Tech University (Natural Science Edition), 2022,44(2):187-196.（in Chinese）
HUANG B S, HOU X X, LIN C R.Experiment on vertical support test for prefabricated concrete frame structure construction [J]. Journal of Nanjing Tech University(Natural Science Edition), 2023,45(3):284-292. （in Chinese）
［3］
PAN Z H, SI Q, ZHOU Z B, et al. Experimental and numerical investigations of seismic performance of hybrid joints with bolted connections [J]. Journal of Constructional Steel Research, 2017,138(11):867-876.
WU C L, LIU J M, TAN W Y, et al. Nonlinear analysis of seismic behavior of dry connection joints for prefabricated steel reinforced concrete [J]. Journal of Jiangsu University (Natural Science Edition),2019,40(6):727-733. （in Chinese）
［5］
NZABONIMPA J D, HONG W K, KIM J. Experimental and non-linear numerical investigation of the novel detachable mechanical joints with laminated plates for composite precast beam-column joint [J]. Composite Structures, 2018,185:286-303.
XU S Y, LI Z L, LIU H J, et al. Seismic behavior of precast sleeve-connected CFST column to RC beam connection [J]. Journal of Harbin Institute of Technology, 2016,48(6):124-131.（in Chinese）
［8］
ZHOU X H, LIU J P, CHENG G Z, et al. New connection system for circular tubed reinforced concrete co-lumns and steel beams [J]. Engineering Structures, DOI：10.1016/j.engstruct.2020.110666.
DU Y F, LI H, HAN B, et al.Analysis of influential factors on the seismic behavior of PC columns connected by steel-concrete composite joints [J]. Engineering Mechanics, 2020,37(6):110-121，154.（in Chinese）
［10］
WU C L, LIU J M, WANG Q H, et al. Mechanical properties of modular prefabricated steel-concrete composite internal joints under cyclic loading [J]. Journal of Constructional Steel Research, DOI：10.1016/j.jcsr.2020.10646.
［11］
KHALOO A, DOOST R B. Seismic performance of precast RC column to steel beam connections with variable joint configurations [J]. Engineering Structures, 2018,160:408-418.
［12］
CALADO L, PROENA J M, ESPINHA M, et al. Hysteretic behavior of dissipative welded fuses for earthquake resistant composite steel and concrete frames [J]. Steel and Composite Structures, 2013,14(6):547-569.
［13］
VALENTE M, CASTIGLIONI C A, KANYILMAZ A.Dissipative devices for earthquake resistant composite steel structures: bolted versus welded solution [J]. Bulle-tin of Earthquake Engineering, 2016,14(12):3613-3639.
WANG M, QIAN F X, YANG W G, et al. Comparison study on constitutive relationship of low yield point steels, Q345B steel and Q460D steel [J]. Engineering Mechanics, 2017,34(2):60-68.（in Chinese）
［15］
LIU X C, HE X N, WANG H X, et al. Bending-shear performance of column-to-column bolted-flange connections in prefabricated multi-high-rise steel structures [J]. Journal of Constructional Steel Research, 2018,145(6):28-48.
［16］
WU C L, YU S J, LIU J M, et al. Development and testing of hybrid precast steel-reinforced concrete column-to- H shape steel beam connections under cyclic loading [J]. Engineering Structures, DOI:10.1016/j.engstruct.2020.110460.
2024, Vol. 45 
