Real-time hybrid simulation on high strength steel frame with Y-shaped eccentric braces

Abstract In recent years, real-time hybrid simulation (RTHS) has been widely examined by researchers as a new, economical, and reliable seismic testing technology for structural analysis. In this paper, RTHS is applied to the space structure experiment of a high strength steel frame with Y-shaped eccentric braces (HSYE). First, the proposed RTHS method utilized the upper stories of the prototype as the experimental substructure, and the lower stories was taken as the numerical substructure and simulated in finite element software. Then, the OpenFresco test platform and xPC-Target with an adaptive feed-forward delay compensator were used to realize real-time loading. Before conducting the RTHS, the method of adding an adaptive stage before seismic acceleration record was proposed to compensate the initial delay. On this basis, the seismic behavior of the HSYE was tested using selected seismic acceleration records. The results indicated that the RTHS results are stable and reliable. Under an earthquake simulated load, the HSYE structure can give full play to the local energy dissipation characteristics of the shear link and ensure the elasticity of the main frame, which has vast engineering application prospects.

[1]  Weijie Xu,et al.  Analysis of actuator delay and its effect on uncertainty quantification for real-time hybrid simulation , 2017, Earthquake Engineering and Engineering Vibration.

[2]  James M. Ricles,et al.  Adaptive time series compensator for delay compensation of servo‐hydraulic actuator systems for real‐time hybrid simulation , 2013 .

[3]  Tao Wu,et al.  Experimental study of seismic response reduction effects of particle damper using substructure shake table testing method , 2018, Structural Control and Health Monitoring.

[4]  Bin Wu,et al.  Actuator dynamics compensation based on upper bound delay for real‐time hybrid simulation , 2013 .

[5]  Egor P. Popov,et al.  ECCENTRICALLY BRACED STEEL FRAMES FOR EARTHQUAKS , 1978 .

[6]  James M. Ricles,et al.  Tracking Error-Based Servohydraulic Actuator Adaptive Compensation for Real-Time Hybrid Simulation , 2010 .

[7]  Michel Bruneau,et al.  Tubular Links for Eccentrically Braced Frames. I: Finite Element Parametric Study , 2008 .

[8]  Feng Jin,et al.  Stability analysis of MDOF real‐time dynamic hybrid testing systems using the discrete‐time root locus technique , 2015 .

[9]  Vincenzo Piluso,et al.  Rigid-plastic analysis and moment–shear interaction for hierarchy criteria of inverted Y EB-Frames , 2014 .

[10]  Brian Uy,et al.  Confinement models for high strength short square and rectangular concrete-filled steel tubular columns , 2016 .

[11]  Murude Celikag,et al.  Behavior of reverse-channel and double-reverse-channel connections to tubular columns with HSS , 2015 .

[12]  Young Suk Park,et al.  Experimental study on the rate-dependency of reinforced concrete structures using slow and real-time hybrid simulations , 2017 .

[13]  Σταυροσ Δερμιτζακησ,et al.  DEVELOPMENT OF SUBSTRUCTURING TECHNIQUES FOR ON-LINE COMPUTER CONTROLLED SEISMIC PERFORMANCE TESTING , 1985 .

[14]  Feng Wang,et al.  Cyclic behaviour of Y-shaped eccentrically braced frames fabricated with high-strength steel composite , 2016 .

[15]  Mingzhou Su,et al.  Seismic testing of high-strength steel eccentrically braced frames with a vertical link , 2017 .

[16]  Egor P. Popov,et al.  CYCLIC BEHAVIOR AND DESIGN OF LINK BEAMS , 1983 .

[17]  Yan Guo,et al.  Experimental performance of Y-shaped eccentrically braced frames fabricated with high strength steel , 2017 .

[18]  Pier Paolo Rossi,et al.  A design procedure for dual eccentrically braced systems: Analytical formulation , 2013 .

[19]  Aurel Stratan,et al.  Experimental validation of re-centring capability of eccentrically braced frames with removable links , 2016 .

[20]  James M. Ricles,et al.  Large-Scale Experimental Studies of Structural Control Algorithms for Structures with Magnetorheological Dampers Using Real-Time Hybrid Simulation , 2013 .

[21]  Yuanqing Wang,et al.  Residual stress of 460 MPa high strength steel welded i section: Experimental investigation and modeling , 2013, International Journal of Steel Structures.

[22]  P. Benson Shing,et al.  Performance of a real‐time pseudodynamic test system considering nonlinear structural response , 2007 .

[23]  Ruiyang Zhang,et al.  Real-time hybrid simulation of a shear building with a uni-axial shake table , 2016 .

[24]  Nabil Mansour,et al.  Experimental Validation of Replaceable Shear Links for Eccentrically Braced Steel Frames , 2011 .

[25]  Vincenzo Piluso,et al.  Plastic design of eccentrically braced frames, I: Moment–shear interaction , 2009 .

[26]  Xiuyu Gao,et al.  Real time hybrid simulation: from dynamic system, motion control to experimental error , 2013 .