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Zhao L.,Dalian University of Technology | Zhang J.,Dalian University of Technology | Shen Y.,Shenyang New World Architecture Design Co. | Wu W.,Staffordshire University
International Journal of Smart Home | Year: 2015

This paper has completed the hardware design of STM32F103 system circuit, infrared code learning module, human body infrared sensor module, indoor temperature and humidity sensor module, completes the software design of learning air conditioning remote control code, indoor temperature and humidity sensor module, also completes the energy-saving controller hardware and software debugging. Finally, this paper takes split type air conditioning units in a conference room as the control object (including indoor lighting system) to complete the energy-saving controller in air conditioner electrical system design, installation and debugging, completes the air conditioning start-stop and infrared temperature control code learning test. The test results show that energy-saving controller has realized infrared automatic perception of human activity, machine start-stop code self-learning and temperature settings and other functions. © 2015 SERSC. Source


Wang Q.-L.,Shenyang Jianzhu University | Zhou B.,Shenyang Jianzhu University | Tan P.-Y.,Shenyang New World Architecture Design Co.
Gongcheng Lixue/Engineering Mechanics | Year: 2012

On the basis of experimental study, a model was established by using FEM to simulate the deformed mode and axial load versus the mid-height deflection of a concrete filled circular CFRP-steel tubular (C-CFRP-CFST) beam-column, and the predicted results agree well with the tested ones. Developments of stress and strain of concrete, steel tube and CFRP, as well as the reaction force between the outer tube to the concrete during the whole loading process were analyzed. At last, a formula for calculating load bearing capacity of the C-CFRP-CFST beam-column were proposed, and the predicted results by using this expression agree well with those of tested. Source


Wang Q.-L.,Shenyang Jianzhu University | Che Y.,Shenyang Jianzhu University | Che Y.,Dalian University of Technology | Tan P.-Y.,Shenyang New World Architecture Design Co.
Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | Year: 2011

Based on experimental study, axial loadversus mid-height cross-section deformation curves and the deformed modes of the axially compressed concrete filled circular CFRP-steel tubes (C-CFRP-CFST) with moderate slenderness ratio were simulated by using finite element method, and the calculated results agree well with the experimental results. Analysis based on finite element showed that, the maximum load bearing capacity of the composite column decreases as the slenderness ratio increases, whereas the elastic stiffness of the columns keeps almost constant. Stress of concrete, steel tube and CFRP were analyzed. The interaction force between the steel tube and the concrete decreases gradually from compressive zone to tensile zone. In compressive zone, the interaction force drops a little as distance from the mid-height cross-section increases. The adhesive strength has little effect on the load bearing capacity and on the elastic stiffness of the specimens. Equation for calculating the loading bearing capacity of the composite columns is presented, and the estimated results agree well with the experimental results. Source


Wang Q.-L.,Shenyang Jianzhu University | Che Y.,Shenyang Jianzhu University | Tan P.-Y.,Shenyang New World Architecture Design Co. | Shao Y.-B.,Yantai University
Gongcheng Lixue/Engineering Mechanics | Year: 2010

The so-called concrete filled CFRP-steel tubular (CFRP-CFST) structure is obtained by infilling concrete into the precasted CFRP-steel tube, or by strengthening, repairing and reinforcing concrete filled steel tubular (CFST) structures with CFRP due to the requirement of new functions or due to slight damage. CFRP-CFST can perform the advantages of the high strength for concrete under tri-axial compression, and it can also simultaneously avoid the buckling of the steel tube. Therefore, it has higher bearing capacity and better durability. The present study of static behaviour as well as the hysteretic behaviour on CFRP-CFST structure is introduced here, which includes experimental study, finite element simulation, theoretical analysis, bearing capacity index and configuration measures. Finally, the advances and the perspectives in the future work on the CFRP-CFST under combined loading and its fire resistance, the frame structure and the structural system are presented. Source

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