Shenyang, China
Shenyang, China

Shenyang Jianzhu University is a university in Shenyang, Liaoning, China under the provincial government. Wikipedia.

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Ren Q.-X.,Shenyang Jianzhu University | Han L.-H.,Tsinghua University | Hou C.,University of Sydney | Hua Y.-X.,Tsinghua University
Journal of Constructional Steel Research | Year: 2017

Tapered concrete filled steel tubular (CFST) columns have been used in some spatial structures, however, research on the structural performance of such tapered composite columns under combined compression and bending is relatively seldom, and this paper thus intends to fill this knowledge gap through experimental investigations. A total of twenty-four tapered CFST specimens were tested under combined compression and bending, including twelve square columns and twelve circular ones. The test parameters included sectional type, tapered angle, slenderness ratio and load eccentricity. Typical failure modes, the load versus deformation relations, the strain development of tapered composite members and the influence of significant parameters were evaluated based on the testing results. Finally, simplified design method for predicting the load carrying capacity of tapered CFST column under combined compression and bending was discussed. © 2016 Elsevier Ltd

Yu J.,Shenyang Jianzhu University
Journal of Chemical and Pharmaceutical Research | Year: 2014

The upflow microbial fuel cell (MFC) system with membrane-free air-cathode was developed, and landfill leachate as fuel. The anode was made of stainless steel mesh filled with activated carbon, and carbon felt as the cathode. Electricity production performance of MFC with cylindrical stainless steel mesh anode filled with 0 (unfilled), 1mm, and 3mm cylindrical activated carbon particles was investigated. The electrochemical process of anode was observed by the cyclic voltammetry test. The mechanism of anode electrode reaction was analyzed. The results showed that the electricity generation performance of MFC with the anode filled with activated carbon was better than that of unfilled MFC. Maximum volumetric density of 4056.4mW/m3 and the apparent internal resistance of 494Ω were achieved from MFC with anode filled with 1mm particle. With the decrease of filled particles size (anode surface area increase), the electrochemical activity of microbes enriched on the surface of graphite rod increased. The electrode reaction process of anode with unfilled and filled with 1mm and 3mm particle were an irreversible process, a reversible process and a partially reversible process. © 2014, Journal of Chemical and Pharmaceutical Research. All rights reserved.

Han L.-H.,Tsinghua University | Hou C.,Tsinghua University | Wang Q.-L.,Shenyang Jianzhu University
Journal of Constructional Steel Research | Year: 2012

This paper is an attempt to study the performance of concrete filled steel tubular (CFST) members with square sections under both loading and chloride corrosion. A total of 28 specimens, including 17 stub columns and 11 beams, were tested. The main parameters were loading ratio (from 0 to 0.75) during corrosion, as well as corrosion condition (no corrosion, and fully or half immersed into corrosive solution, respectively). According to the test, the effects of both loading and corrosion on the behaviour of CFST and reference hollow steel tubular members were analyzed. Comparisons between the predicted ultimate strength by using the existing codes of DBJ/T13-51-2010 and EC4-2004 and the testing results were proposed. © 2011 Elsevier Ltd. All rights reserved.

Zhang J.L.,Nanyang Technological University | Huang W.M.,Nanyang Technological University | Lu H.B.,Harbin Institute of Technology | Sun L.,Shenyang Jianzhu University
Materials and Design | Year: 2014

Water/moisture-content dependant behavior in a commercial hydrogel [poly(acrylamide-co-acrylic acid)] is systematically investigated. As shown, at lower water/moisture contents, the hydrogel has the thermo-responsive and moisture-induced shape memory effect (SME); while at higher water/moisture contents, the hydrogel has the rubber-like mechano-responsive and water-induced shape change effect (SCE). Furthermore, it is revealed that on the one hand, programming can be realized by means of deforming at high temperatures (above the glass transition temperature) or dehydration after pre-deforming rubber-like hydrogel; on the other hand, hydrogel can be used as the elastic matrix in a hybrid for tailored SME. Typical potential applications utilizing combined thermo-responsive and water-responsive SCE/SME are proposed. © 2013 Elsevier Ltd.

Jiang S.-F.,Fuzhou University | Zhang C.-M.,Northeastern University China | Zhang S.,Shenyang Jianzhu University
Expert Systems with Applications | Year: 2011

It is proposed in this paper a novel two-stage structural damage detection approach using fuzzy neural networks (FNNs) and data fusion techniques. The method is used for structural health monitoring and damage detection, particularly for cases where the measurement data is enormous and with uncertainties. In the first stage of structural damage detection, structural modal parameters derived from structural vibration responses are fed into an FNN as the input. The output values from the FNN are defuzzified to produce a rough structural damage assessment. Later, in the second stage, the values output from three different FNN models are input directly to the data fusion center where fusion computation is performed. The final fusion decision is made by filtering the result with a threshold function, hence a refined structural damage assessment of superior reliability. The proposed approach has been applied to a 7-degree of freedom building model for structural damage detection, and proves to be feasible, efficient and satisfactory. Furthermore, the simulation result also shows that the identification accuracy can be boosted with the proposed approach instead of FNN models alone. © 2010 Elsevier Ltd. All rights reserved.

Yi T.-H.,Dalian University of Technology | Li H.-N.,Dalian University of Technology | Sun H.-M.,Shenyang Jianzhu University
Smart Structures and Systems | Year: 2013

Locating and assessing the severity of damage in large or complex structures is one of the most challenging problems in the field of civil engineering. Considering that the wavelet packet transform (WPT) has the ability to clearly reflect the damage characteristics of structural response signals and the artificial neural network (ANN) is capable of learning in an unsupervised manner and of forming new classes when the structural exhibits change, this paper investigates a multi-stage structural damage diagnosis method by using the WPT and ANN based on "energy-damage" theory, in which, the wavelet packet component energies are first extracted to be damage sensitive feature and then adopted as input into an improved back propagation (BP) neural network model for damage diagnosis in a step by step mode. To validate the efficacy of the presented approach of the damage diagnosis, the benchmark structure of the American Society of Civil Engineers (ASCE) is employed in the case study. The results of damage diagnosis indicate that the method herein is computationally efficient and is able to detect the existence of different damage patterns in the simulated experiment where minor, moderate and severe damages corresponds to involving in the loss of stiffness on braces or the removal bracing in various combinations. Copyright © 2013 Techno-Press, Ltd.

Sun L.,Shenyang Jianzhu University | Huang W.M.,Nanyang Technological University
Soft Matter | Year: 2010

As recently demonstrated, after programming, thermo-responsive shape memory polymers can exhibit the multi-shape memory effect (SME) upon heating. In addition, it is confirmed that the temperature corresponding to the maximum recovery stress in constrained recovery is roughly the temperature at which pre-deformation is conducted, a phenomenon known as the temperature memory effect (TME). In this paper, we propose a framework to investigate the underlying mechanisms behind both effects and provide the conditions for the TME. According to this framework, we can achieve fully controllable shape recovery following a very complicated sequence in a continuous manner. © 2011 The Royal Society of Chemistry.

Sun L.,Shenyang Jianzhu University | Huang W.M.,Nanyang Technological University
Materials and Design | Year: 2010

The recoverable strain of shape-memory polymers (SMPs) is an order higher than their metal counterpart, i.e., shape-memory alloys. The recent finding of the influence of moisture on the glass transition temperature of a polyurethane SMP, which is traditionally known for its thermo-responsive nature, enables us to realize not only water-driven for shape recovery, but also recovery following a pre-determined sequence. Utilizing these features of this SMP, we propose the concept of delivering a tiny device which is made of this material into a pore through a very small hole. The feasibility of the concept is demonstrated experimentally. This concept could eventually be used to deliver a micro/nano device into living cells for surgery or operation inside of them. © 2009 Elsevier Ltd. All rights reserved.

Zhao W.-J.,Shenyang Jianzhu University
Gongcheng Lixue/Engineering Mechanics | Year: 2012

The design strength of the concrete used for ultra-high-rise buildings in Japan has already surpassed 200N/mm2. The overwhelming majority of which were built with the precast construction method. This fasion of ultra-high-rise RC buildings is largely due to the development of ultra-high-strength materials, the conception of new design methodologies, and the innovation in construction technologies. In this area, Japan is the technology leader in the world. This paper includes an introduction of the latest trends of this area in Japan, as well as an overview of the relationship between the ultra-strong materials and a precast concrete structure. It provides also an insight into the recent researches and achievements of the author and his team.

Wang X.,Shenyang Jianzhu University
International Journal of Electrochemical Science | Year: 2012

The compound BBMB was synthesized from the dehydration reaction o-phenylenediamine and 1, 4-benzendicarboxylic acid in polyphosphoric acid. The effectiveness of BBMB as corrosion inhibitor for mild steel in 0.5 M HCl solution was investigated by various techniques such as weight loss measurement, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS). The results of these investigations showed enhancement in inhibition efficiencies with the increase in BBMB concentration and even at the concentration 0.01 mM the IE% exceeded 80%. BBMB suppressed both mild steel dissolution and hydrogen reduction processes acting as a mixed-type inhibitor. The excellent inhibition effectiveness of BBMB was also verified by scanning electron microscope (SEM). BBMB precluded mild steel corrosion by blocking the active sites on mild steel surface. The adsorption of BBMB on mild steel surface obeyed Langmuir adsorption isotherm. © 2012 by ESG.

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