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Zhang S.,China United Northwest Institute for Engineering Design and Research Co. | Chen S.-J.,Center for Quality Supervision of Building Engineering in Zhanjiang | Li Z.,Xi'an University of Technology | Zhang J.-S.,China JiKan Research Institute of Engineering Investigations and Design Co.
MATEC Web of Conferences | Year: 2016

Through applying MSC.Marc nonlinear finite element software, this research is to explore the ductility performance of steel reinforced concrete T-shaped columns under reciprocating loading. The result shows that the MSC.Marc calculation results are quite consistent with the experimental data, and can objectively reflect the mechanical properties of steel reinforced concrete special-shaped columns. These mean that the MSC.Marc software can be used for performing simulation analysis on the steel reinforced concrete special-shaped column hysteretic performance. Through changing the axial compression ratio, shear span ratio and load angle to research the ductility performance of steel reinforced concrete T-shaped columns under reciprocating loading, the main conclusions are as follows: The bearing capacity of steel reinforced concrete t-shaped cross section column decreases with the increase of shear span ratio; displacement ductility decreases with the increase of axial compression ratio; mechanical properties of the web load are superior to the ones of the flange load. © The Authors, published by EDP Sciences, 2016.


Luo X.,Xi'an Jiaotong University | Gu Z.,Xi'an Jiaotong University | Wang Z.,Xi'an Jiaotong University | Tian W.,China United Northwest Institute for Engineering Design and Research Co. | Li K.,Hanyangling Museum
Applied Thermal Engineering | Year: 2016

The indoor thermal requirements in archaeology museum buildings mainly take into account the comfort of visitors and the preservation of the in situ relics. However, the environmental conditions for the thermal comfort of visitors are usually inconsistent with those for the appropriate preservation of relics, and the specialized needs of the latter are usually ignored due to financial and technological limitations. In this paper, the recommended environmental conditions for preserving relics were revisited, and the criterion of optimal conservation of in situ relics by establishing the equilibrium of heat and mass in the air-soil coupled environment according to the primitive soil environment parameters was presented. Based on these various requirements, an independent environmental control method employing a split air conditioning system for visitor comfort and a capillary radiant system for relic preservation was proposed. A laboratory room consisting of a funerary pit and the above-mentioned air conditioning (A/C) systems for separate human comfort and relic preservation was constructed to simulate a large open exhibition hall of an archaeology museum. Experimental studies have been carried out to examine the feasibility and performance of the method. The results show that both A/C systems could be operated independently with different working parameters and operation models. Additionally, the different environmental needs of visitors and relics were simultaneously satisfied with this energy-saving method. © 2016 Elsevier Ltd. All rights reserved.


Cai T.,Northwestern Polytechnical University | Zhang X.,Northwestern Polytechnical University | Lian Y.,Northwestern Polytechnical University | Peng Z.,China United Northwest Institute for Engineering Design and Research Co.
Yingyong Lixue Xuebao/Chinese Journal of Applied Mechanics | Year: 2016

As a new type of high rise building, the mega-sub controlled structure system (MSCSS) shows the characteristics of non-classical damping distribution. In order to grasp accurately and efficiently the control characteristics of MSCSS and avoid the errors of the forced uncoupling method and the deficiency of the time-history method, in this paper, the complex modal theory is used to decouple the non-classical damping system, and then the suitability of the CCQC method (Complex Complete Quadratic Combination) for MSCSS is approved. After that, the seismic analysis of MSCSS is carried out. Finally, the results clearly show that the seismic features of MSCSS are superior to the MFS. Furthermore, the control characteristic of MSCSS is mainly reflected on substructure which adjusts the frequency. © 2016, Editorial Department of CJAM. All right reserved.

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