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Zhe Y.,Changchun Architecture and Civil Engineering College
Proceedings - 2016 International Conference on Smart City and Systems Engineering, ICSCSE 2016 | Year: 2016

In order to promote the comprehensive study of the whole problem of ecological housing, this paper uses the principle of the method AHP system model, established a set of evaluation system for rural ecological performance, in order to make scientific evaluation for rural housing overall ecological performance. And based on the analysis of determining evaluation system indicators weights, the paper conducted a systematic analysis of comprehensive assessment of rural housing ecological performance. In this paper, research methods to establish evaluation system model with AHP (analytic hierarchy process) provide new ideas for systematic study of rural residential ecological assessment. This will help improve the ecological state of the environment in rural areas. © 2016 IEEE.

Rujing L.,Changchun Architecture and Civil Engineering College
Proceedings - 2016 International Conference on Smart City and Systems Engineering, ICSCSE 2016 | Year: 2016

The reasonable cold model of the development of city square, green to the urban development and the social economy brings great influence of ascension for the whole, the influence and the factors which restrict the development of the cold city square greening is various, how to objectively measure differences in development of all kinds of square green, provide a reliable basis for urban overall planning, to explore a suitable quantitative method is necessary, GIS technology will be scientific and objective analysis of the cold city square virescence design. © 2016 IEEE.

Zhang L.,Jilin University | Zhang L.,Changchun Architecture and Civil Engineering College | Liu Z.,Jilin University
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

Application of high modulus asphalt (HiMA) concrete can improve not only rutting resistance, but also the bearing capacity of pavement structure. It is consistent with the long-life pavement construction philosophy. In this paper, combined with bus lane renewal of Chang’an road in Beijing, three technics are applied to resolve significant rutting on the bus lane: coarse aggregate gap-graded mixture, large Nominal Maximum Aggregate Size (NMAS) and hard asphalt. First, two types of hard asphalt (Pen(20/30) and Pen(40/60)), which are produced by three methods, are compared. It is illustrated that hard asphalt, that produced by the oxidation method, is best at high-temperature performance. For mixture, two kinds of HiMA (HiMA(20-25) and HiMA(40-25)) are selected. These two mixtures have same gradation and NMAS, different asphalt Pen(20/30) and Pen(40/60), respectively. Their volumetric characteristics, high-temperature stability, mechanical characteristics, and fatigue resistant are evaluated. The mechanical characteristics include compressive/flexural strength, compressive resilient modulus and dynamic complex modulus, etc. The results illustrate that HiMA(20-25) has better rutting resistant, bearing capacity, and durability than HiMA(40-25). So the HiMA(20-25) is applied in engineering of the bus lane renewal in Chang’an road. © 2016 Taylor & Francis Group, London.

Wang J.,Northeast Normal University | Wang J.,Guangxi Normal University | Yin M.,Northeast Normal University | Gu W.,Northeast Normal University | Gu W.,ChangChun Architecture and Civil Engineering College
Computers and Mathematics with Applications | Year: 2012

Soft set theory, introduced by Molodtsov in 1999, has been considered as an effective mathematical tool for modeling uncertainties. As an interval-valued fuzzy extension of the intuitionistic fuzzy soft set theory or an intuitionistic fuzzy extension of the interval-valued fuzzy soft set theory, interval-valued intuitionistic fuzzy soft set theory was proposed by Jiang and co-researchers. An interval-valued intuitionistic fuzzy soft set is a parameterized family of interval-valued intuitionistic fuzzy subsets of U, an initial universe set. The theory has been simplified with the use of theorems and equations.

Zheng Y.,Changchun Architecture and Civil Engineering College
Advanced Materials Research | Year: 2014

Based on test data of the prestressed anchor cable composite soil nailing wall deformation and internal force of structure of Shenzhen Holiday Plaza foundation pit, the numerical simulation model of foundation pit is established by FLAC3D software. Through the reasonable selection of soil constitutive model and structural unit, the numerical simulation model is consistent with the project practice. The simulation results on horizontal displacement of foundation pit, the internal force of the structure, the surface layer stress and damaged form are reasonable. This does not only provide a strong basis for the optimum design of the foundation pit, but also provide a scientific guidance for engineering application. © (2014) Trans Tech Publications, Switzerland.

Liu L.,Changchun Architecture and Civil Engineering College | Zhang B.,Harbin Institute of Petroleum
World Information on Earthquake Engineering | Year: 2015

At present, the transportation and contruction of china are developing rapidly, the shear performance reinforcements of the existing reinforced concrete beams are the main research issue for the reinforcement and reconstruction of the old bridge, the maintenance of the building structure. After that, it could improve the labor force performance of the structures, reduce the accidents significantly. In recent years, the use of fiber reinforced polymer (FRP) composites to reinforce the existing structures become a focal point to research. The main methods of FRP reinforcement are divided the pasting and anchoring mode. The difference with passive reinforcement is that the wire ropes reinforcement technology is a new method, which used the vitro prestressed reinforcement to improve the shear capacity of the structures. Based on the wire ropes and carbon fibers reinforced polymer (CFRP) sheets reinforcement technology, the main factors effected the reinforcement are researched and compared, such as the rope arrangement spacing, the layers and paste method of CFRP sheets. Finally, some proposals for the structure construction are put forward. ©, 2015, Science and Technology Periodical Press. All right reserved.

Zhang L.,Changchun Architecture and Civil Engineering College
Applied Mechanics and Materials | Year: 2013

This paper discusses the feasibility of damage identification on simply supported slab bridge by the curvature mode. Firstly, the theoretical basis of curvature modal method for damage identification is introduced. Then, it simulated the structural damages by the use of three-dimensional finite element model, and used curvature mode to identification them validly. Based on the finite element simulation results, the following conclusions can be drawn: the decline of the structural natural frequency can be used to judge if the simply supported slab bridge is damaged. But the declined value is small, it is almost impossible to achieve in the scene, and it also can not be accurately positioning and quantitative; curvature model is very sensitive to the partly change of structure. It cannot be affected by the interference of the other plates, when the damage condition was identified on one plate of the simply-supported slab bridge even if that plate is adjacent plate would not affect it. © (2013) Trans Tech Publications, Switzerland.

Zhao Y.-Q.,Changchun Architecture and Civil Engineering College
Dongbei Daxue Xuebao/Journal of Northeastern University | Year: 2013

The area of a cross section was divided into finite stiffness units(the product of the elasticity modulus and area units), from this to determined the location of its weighted centroid and neutral axis of the cross-section for the reinforced concrete beam. According to the deformation characteristics of the tiny section of beam, strain law and stress law of every stiffness units of the cross-section were obtained. The static relation determined the stress law. The stress of every stiffness units was calculated for the steel bars or concrete. When the steel bar yielded, the "same effect modulus of elasticity" concept also could get satisfactory results.

Li Y.,Changchun Architecture and Civil Engineering College
Proceedings - 2014 6th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2014 | Year: 2014

Inherent strain FEM is a recently developed numerical technique to forecast welding residual deformations. It makes use of the concept of inherent strain distribution to effectively reduce the analysis of the very complex highly nonlinear welding process to an equivalent linear elastic FEA, thus the computational cost could be significantly reduced. In this paper, the inherent strain coefficients for the welding process of low-alloy high tensile strength steel Q345 have been derived by using both elastic-plastic finite element analyses and experimental studies of twelve bead-on-plate specimens. It has been found that the results from the two methods compare well. Using the inherent strain coefficients derived, an example application of the inherent strain FEM to a real life welding process has been demonstrated. © 2014 IEEE.

Bo Y.,Changchun Architecture and Civil Engineering College
Proceedings - 2015 7th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2015 | Year: 2015

This paper on China's part of a comprehensive private hospital management at present, medical resources and marketing strategy of comparative study, analysis of the private hospitals want to in the fierce market competition in the future and the masses of the health service level is improved form, private hospitals must break the constraints of the bottleneck in its development to enhance the core competitiveness their own, in order to play its proper role in the medical market. © 2015 IEEE.

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