China Northeast Architectural Design and Research Institute Co.

Shenyang, China

China Northeast Architectural Design and Research Institute Co.

Shenyang, China

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Wei L.,China Northeast Architectural Design and Research Institute Co. | Qin S.,Jilin University | Chen H.,Jilin University
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2014

Pit soil rebounding during excavation will cause piles rebound and produce lateral friction in pit. Three-dimensional finite element analysis method was conducted to study the behavior of single pile and pile group under excavation. Results show that the rebounding displacement of single pile can be divided into two parts, namely, one is caused by the rebounding of soil around the pile and the other is caused by the rebounding of the bearing layer. The rebounding displacement and the degree of lateral friction of central pile were reduced by the shielding effects of outer piles. The relative reduction in rebounding displacement in 5×5 pile group increased with the increase of relative bearing stiffness ratio, and this kind of variation depended on the pile location in the group. Based on three cases studied, the larger the number of piles in a group, the greater the shielding effects presented. The number of piles had greater influence on shielding effect than pile spacing.


Guo X.-Y.,Northeastern University China | Guo X.-Y.,China Northeast Architectural Design and Research Institute Co.
Shenyang Gongye Daxue Xuebao/Journal of Shenyang University of Technology | Year: 2013

Aiming at the problems that the variable air volume (VAV) central air conditioning system has such characteristics as multi-variables, large time delay and nonlinearity and the routine control algorithm exhibits such disadvantages as slow system response and low control precision, a fuzzy neural network predictive control strategy was proposed. The fuzzy neural network control was combined with the predictive control technology in the proposed method, and a compound controller model combining both fuzzy neural network and predictive control was established. Through optimizing the control mode of VAV, the predictive control of central air conditioning system was effectively realized. The results show that with adopting the proposed control method, the system exhibits good dynamic and steady performances, high control precision, obvious energy-saving effect and wide application prospect.


Guo X.-Y.,Northeastern University China | Guo X.-Y.,China Northeast Architectural Design and Research Institute Co.
Shenyang Gongye Daxue Xuebao/Journal of Shenyang University of Technology | Year: 2011

Traditional central air-conditioning system has large hysteretic, inertial and non-linear characteristics, which may cause the energy mismatch between system power supply and load energy demand in regular control method and result in the unbalance of energy supply and demand between central air-conditioning system and application environment. And thus, a great amount of electric energy is wasted. Aiming at the control performance of central air-conditioning system, a neural network based prediction control method to combine Elman neural network predictor with neural network controller was proposed. The control strategy can be adjusted real time in order to match the system energy demand and air-conditioning energy output through predicting future energy demand. With adopting the control method of combining Elman neural network predictor and neural network controller, the system exhibits good performances of dynamics and stability as well as obvious energy-saving effect. The predictive energy-saving central air-conditioning system using neural network can effectively control the relationship between the central air-conditioning system and application environment energy supply, and provide a reliable guarantee for reducing energy consumption of intelligent buildings.


Hao H.,Shenyang Jianzhu University | Yao J.,Shenyang Jianzhu University | Feng G.,Shenyang Jianzhu University | Wen H.,China Northeast Architectural Design and Research Institute Co.
Procedia Engineering | Year: 2015

The solar and gas heat pump heating system is a system that combines the gas heat pump and the solar heat pump driven by electricity. On the one hand, the system makes full use of the solar, and it is a real High-efficiency, energy-saving system. On the other hand, the system use natural gas as an energy source which can relieve the energy crisis, reduce environmental pollution and relieve the pressure of the grid. During the operation of the system, it will save operating costs due to the cheaper price of gas compared with electricity. Therefore, the research of the solar and gas heat pump has a great sense of energy-saving and economical. © 2015 The Authors. Published by Elsevier Ltd.


Hao H.,Shenyang Jianzhu University | Mao L.,Shenyang Jianzhu University | Feng G.,Shenyang Jianzhu University | Wen H.,China Northeast Architectural Design and Research Institute Co.
Procedia Engineering | Year: 2015

This paper introduces a new system named solar energy and gas heat pump, based on the solar heat pump system driven by electricity. The study established the models of the system according to the using of TRNSYS and SIMULINK. This paper mainly studies on the performance parameters of the new system, such as evaporation temperature, COP and heating capacity. At the same time, the paper makes a comparison of COP and PER between gas heat pump and solar energy heat pump, solar energy and gas heat pump. The results show that the evaporating temperature increases by 0.84°C when the thermal storage tank temperature increases by 1°C and the condensing temperature increases by 1.46°C when the condenser inlet temperature increases by 1°C. The COP of the new system can reach 4.76 and the primary energy ratio of the system is up to 1.96, which is superior to the other two systems obviously. © 2015 The Authors. Published by Elsevier Ltd.


Guo X.-Y.,Northeastern University China | Guo X.-Y.,China Northeast Architectural Design and Research Institute Co.
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011 - Proceedings | Year: 2011

Through energy saving of building investment risk and the development environment of uncertainties, this paper introduces energy saving of building field which involves the real option theory and the normal cloud theory systematically, and combines them effectively, by establishing real option pricing based on the normal cloud model and using it applied in energy saving of building investing, getting a new calculation method of real option, through analyzing concrete cases, summarizing the characteristics of such options and existing problems, this paper puts forward the future research direction and the suggestion. © 2011 IEEE.


Shi W.X.,Harbin Institute of Technology | Duan Y.S.,Harbin Institute of Technology | Duan Y.S.,China Northeast Architectural Design and Research Institute Co. | Yi X.S.,Tongji University | And 3 more authors.
Desalination | Year: 2013

Nitrogen removal in polluted water with low carbon source by a membrane bioreactor-attapulgite clay integrated system was investigated, and the contribution of membrane and microorganisms to organic pollutant removal was evaluated and discussed. The result confirmed that the two MBR treatments can be effective for the removal of trace organic matters, which CODMn and UV254 were higher than 80% and 78%, respectively. Moreover, it can be also highlighted that there is a limitation of MBR in removing nitrogen (e.g. ammonia, nitrite, and nitrate) and that attapulgite clay could complement MBR well as a biological carrier. The MBR-attapulgite clay system obviously showed higher nitrogen removal efficiency; the ammonia nitrogen and total nitrogen efficiencies improved by 8% and 40% than that of MBR. Furthermore, the membrane fouling in MBR-attapulgite clay system remarkably reduced as well, which provided a longer operation time (more than 35days) before backwashing with chemical solution. ®Biological removal of nitrogen by a membrane bioreactor-attapulgite clay system in treating micro polluted water was studied.®The rejection coefficients of all kinds of nitrogen by the two different MBR systems were investigated.®Compared with MBR, membrane fouling in MBR-attapulgite clay system was a little lower. © 2013 Elsevier B.V..


Guo X.-Y.,Northeastern University China | Guo X.-Y.,China Northeast Architectural Design and Research Institute Co.
Procedia Environmental Sciences | Year: 2011

Fuzzy Data Envelopment Analysis (DEA) evaluation model in Airport Construction Energy-saving have improved incomplete weight deficiency of information processing. Firstly, indices values were converted to trapezoid fuzzy numbers, then with incomplete information on indices weights as constraints, a fuzzy DEA model with outputs only and preference was established, and then by applying the α-cut approach, the model was transformed to a family of crisp DEA models and was solved. Experiments demonstrated the feasibility and applicability of the method. © 2011 Published by Elsevier Ltd.


Jia L.,Shenyang Jianzhu University | Li H.,China Academy of Building Research | Wu Y.,Shenyang Jianzhu University | Wu Y.,China Northeast Architectural Design and Research Institute Co.
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

Six edge connections of cellular steel frames (CSF) were tested under low-cyclic reversed loading in order to study the seismic behavior of welded beam-column connection of CSF. The effects of the parameters such as d/h t (ratio of the first opening position on the beam and height of beam web) and e/h c (ratio of the first opening position on the column and height of column web) were considered. The loading process, failure mode, hysteretic loop, skeleton curve, ductility and stiffness degradation of the connections of CSF were analyzed under axial compression ratio u=0.25 and outspread ratio K=1.5. It is indicated that welding quality is the primary assurance to prevent brittle failure of the connections. Welding flaws lead to early crack propagation, which can reduce the ductility and energy dissipation capacity of the connections. Comparing with the original connection without holes on beam-column web, the moment resistance capacity and rotational stiffness of the connections were improved after hole-opening and outspreading of beam-column web. Hysteretic loops of the load-displacement curves were stable and plump. No obvious stiffness degradation was observed. It is demonstrated that the connections of CSF had good energy dissipation capacity. When outspread ratio remains constant, the seismic behavior is influenced by d/h t more significantly than e/h c. Controlling d/h t can effectively change the plastic hinge to the beam section far away from the connection domain. In this way, the triaxial stress state close to the connection zone can be greatly alleviated, possibility of brittle damage of the welding is dramatically reduced, and the ductility performance of the connection is greatly improved.


Li J.-Y.,Tongji University | Chen C.,Northeastern University China | Chen C.,China Northeast Architectural Design and Research Institute Co.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2013

The corner effect is one form of the spatial effect of excavations, and it has significant influence on the displacement of buildings. Based on the excavation project of the underground commercial street of Bohai Road in Panjin, the displacement characteristics of the buildings near the corner are studied by using the method of FLAC3D. The calculated results show that the buildings near the corner exhibit different settlement both in the vertical and parallel directions of the excavation, which is characterized by 3D settlement. The buildings can obviously change the displacement fields around the excavation. The foundation stiffness has less influence on the settlement of the buildings. However, the depth of foundation will obviously affect the deformation of the buildings. The influence of the buildings on the displacement fields around the excavation should be considered when classifying the environmental protection level.

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