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Li M.,Shenyang Jianzhu University | Li M.,Jangho Group Company Ltd | Liu Y.,Shenyang Jianzhu University | Sun Z.-Z.,Shenyang Jianzhu University | Yuan H.,Shenyang Jianzhu University
Gongcheng Lixue/Engineering Mechanics | Year: 2015

Near-fault pulse ground motion has large potential damage effect on structure. In order to analyze the effect of this kind of ground motion on frame-shear wall structures, near-fault double-pulse-type and multi-pulse-type ground motion are collected. Their elastic acceleration response spectra and the time history response of a 22-floor concrete reinforced frame-shear wall structure induced by them are calculated. The average elastic acceleration response spectra of the near-fault double-pulse-type ground motion is compared with that of the multi-pulse-type ground motion. The average base shear, the average maximum storey-drift-angle, the average top floor displacement, and the average whole structure damage index induced by the near-fault double-pulse-type ground motion are also compared with those induced by the multi-pulse-type ground motion. The results show: the average elastic acceleration response spectra of the near-fault double-pulse-type ground motion is similar to or larger than that of the multi-pulse-type ground motion; the average base shear, the average maximum floor displacement, the average top floor displacement, and the average whole structure damage index induced by the near-fault double-pulse-type ground motion are no less than those induced by the multi-pulse-type ground motion. Therefore, in a statistical sense, only near-fault double-pulse-type ground motion should be considered in approximately analyzing the effects of near-fault pulse ground motion on frame-shear wall structures. ©, 2015, Tsinghua University. All right reserved. Source


Li M.,Shenyang University | Li M.,Jangho Group Company Ltd | Zhang H.Y.,Shenyang University | Zhao W.J.,Shenyang University | Wen Y.T.,Shenyang University
Applied Mechanics and Materials | Year: 2014

The prefabricated construction is widely used because of it has short construction period and can be produced automatic. It has become one of the research focuses of scholars domestic and overseas that how to connect the prefabricate components in the structure to ensure the stability of the whole structure and mechanical behavior. The connection forms of beam and column are overviewed, including the dapped-end connection, the corbel connection, the weld connection, the cast-in-situ monolithic connection, the ductile rod connection, and the pre-stressed fabricated connection. Finally, the problems needed to be further study in the future are discussed. © (2014) Trans Tech Publications, Switzerland. Source


Hui C.,Zhongyuan University of Technology | Hui C.,Tsinghua University | Cao W.-L.,Beijing University of Technology | Wang Y.-Q.,Tsinghua University | Wang B.,Jangho Group Company Ltd
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2016

In order to optimize the influencial parameters of seismic performance of rectangular concrete filled steel tube (CFST) columns, a bottom strengthened rectangular CFST column whose bottom zone was welded with enhancing steel plates, was proposed. Based on the experimental results, the factors affecting the load-bearing capacity were analyzed. By means of the finite element analysis software ABAQUS, the specimens with different compression ratio, different strength grade of concrete, different height and thickness of the bottom strengthened steel plate were numerically analysed. The analytical results were compared with the experimental results. The study shows: as the axial compression ratio increases, the load-bearing capacity and the ductility decrease; as the strength grade of concrete increases, the bearing capacity also increases, but the decline of the performance curve steepens and the ductility decreases; when the height of the strengthened plate increases, the load-bearing capacity of specimens increases steadily, the energy dissipation capacity increases, and yet the ductility approximately holds without change; as the thickness of the strengthened plate increases, the load-bearing capacity improves only a little. The rectangular CFST column with bottom enhancing plates shows better seismic behavior and higher energy dissipation capacity if suitable constructional requirements are satisfied. Such structural configuration can be adopted in design of high-rise buildings. © 2016, Chinese Vibration Engineering Society. All right reserved. Source


Li M.,Shenyang Jianzhu University | Li M.,Jangho Group Company Ltd | Chen J.G.,Shenyang Jianzhu University | Zhao W.J.,Shenyang Jianzhu University | Wang L.G.,Shenyang Jianzhu University
Applied Mechanics and Materials | Year: 2014

The force behavior of parallel double coupling beams (PDCB) with different width is analyzed, based on which the feasibility of this kind of beams is discussed. The loading process of the PDCB is simulated by using finite element software ABAQUS. By analyzing the hysteretic loops, skeleton curves, energy dissipation coefficient, equivalent viscous damping coefficient and ductility coefficient, the bearing capacity and seismic performance of the PDCB is studied. Through simulation, it shows that the hysteretic loops is plump, and the energy dissipation coefficient, equivalent viscous damping coefficient and ductility coefficient of this double beams is high. It can be concluded that the PDCB has good force behavior, and the beams of PDCB can work in coordination. © (2014) Trans Tech Publications, Switzerland. Source


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Jangho Group Co. | Date: 2015-12-10

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