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Jiao Y.F.,Tongji University | Jiao Y.F.,Henan University of Science and Technology | Hou Y.L.,China New Era International Engineering corporation | Wei X.Y.,Tongji University
Advanced Materials Research | Year: 2011

In this paper, the finite element program LS-DYNA was used to simulate the dynamic response of RC column with different constraints subjected to blast pressure. Through analyzing the five group columns with fixed end as well as one end fixed and one end simply supported, the maximum middle displacement and its relation with T/T? were obtained. Thereby the dynamic factor of the column under blast pressure was acquired. Consequently the displacement response spectrum curve of the column was drawn. The results provide reference value to the design and protection of the RC column. © (2011) Trans Tech Publications, Switzerland. Source

Yan X.,Xian University of Architecture and Technology | Li Q.,Xian University of Architecture and Technology | Gao C.,Chinese Research Institute of Highway | Wang L.,China New Era International Engineering corporation
Advanced Materials Research | Year: 2012

Taking a double span-swallows-type CFST (concrete-filled steel tubular) trussed arch bridge as an engineering example; a spatial finite element analysis model is established to calculate its dynamic characteristic. The seismic responses in different earthquake input directions are calculated based on the elastic dynamic time history method. Results show that: the out-plane stability of the bridge is weaker than that of the in-plane; the torsion resistance ability of the bridge deck is smaller than that of the arch ribs; the axial force-Fx, shear force-Fz and bending moment-My of the bridge are mainly controlled by longitudinal seismic forces, whereas the shear forces-Fy, bending moment-Mz and torque-Mx are mainly controlled by transverse seismic forces; vertical seismic force has a considerable effect on internal forces of the bridge, so it can not be ignored in seismic design. Source

Gao M.,Xian University of Architecture and Technology | Li H.,Xian University of Architecture and Technology | Tang H.,Xian University of Architecture and Technology | Cao Q.,China New Era International Engineering corporation
Advanced Materials Research | Year: 2012

Based on the analysis of the economic evaluation of green building, taking references of 〈 Evaluation standards of green building〉 (GB/T 50378-2006), indicators reflecting the economy of green building are selected through expert scoring method and fuzzy statistics method. Furthermore, a comprehensive evaluation model is established based on principle of fuzzy mathematics through the application of AHP aiming at determining the index weight. All above is to provide a wider perspective for the economic evaluation of green building. Source

Su G.,CAS Research Center for Eco Environmental Sciences | Huang L.,CAS Research Center for Eco Environmental Sciences | Liu S.,CAS Research Center for Eco Environmental Sciences | Liu S.,China New Era International Engineering corporation | And 3 more authors.
Catalysis Science and Technology | Year: 2015

Dioxin-like chlorinated aromatics and NOx are toxic compounds that are typically co-released from thermal industrial processes. Nevertheless, there are few studies reporting their synergetic disposal technology. A designed two-step coprecipitation method was developed to synthesize a novel three-dimensional ball-like Ce-Ti-Al composite oxide (Ce0.2TiAlαOx) micro/nanomaterial to simultaneously dispose 1,2,4-trichlorobenzene (1,2,4-TrCBz, as the model compound) and NO in a fixed-bed flow reactor at 300 °C. The prepared Ce0.2TiAlαOx micro/nanomaterial exhibited superior activities to Ce0.2TiOx. This featured the relative increase of 1,2,4-TrCBz degradation and NO conversion efficiencies by 8.0-14.1% and 5.2-33.3%, respectively. NO had a positive effect on the degradation of 1,2,4-TrCBz and induced a significant increase in the activity of the Ce0.2TiAlαOx catalysts. In the presence of NO, 1,2,4-TrCBz was slightly dechlorinated in a stepwise manner to monochlorobenzene and oxidized to small molecules such as formic acid. The oxidative degradation pathway of 1,2,4-TrCBz over Ce0.2TiAlαOx was proposed to proceed via the Mars-van Krevelen mechanism that accounts for the high mobility of the reactive oxygen species, such as O2-, O2-, and O-, the unique redox properties of CeO2, the positive effect of NO, and the interactive effect among the different material components. © The Royal Society of Chemistry 2015. Source

Xue J.,Xian University of Technology | Wang G.,Xian University of Technology | Liu H.,China New Era International Engineering corporation | Ren R.,Xian University of Technology
Xi'an Jianzhu Keji Daxue Xuebao/Journal of Xi'an University of Architecture and Technology | Year: 2014

In order to investigate the seismic behaviors of steel reinforced recycled concrete (SRRC)frame structure, a 1: 2.5 scale model of three-story and two-bay SRRC frame was designed. The low cyclic reversed loading test on this model was carried out, its failure process and pattern were observed, its load-displacement hysteretic loops and skeleton curves were acquired, and its seismic behaviors, such as load carrying capacity, stiffness, ductility, energy dissipation capacity were analyzed. The result of test shows that, the failure mode of the SRRC frame belongs to 'strong column week beam' failure mechanism, its maximum displacement angle is 1/22, and the average displacement ductility coefficient of the frame is 4.3. All these show the good deformation capacity and collapse resistance capacity. ©, 2014, Science Press. All right reserved. Source

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