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Wang L.,Wuhan University of Technology | Li Z.,Wuhan University of Technology | Pei C.,Wuhan University of Technology | Wang Z.,China Building Technique Group Co.
Proceedings - 2016 International Conference on Industrial Informatics - Computing Technology, Intelligent Technology, Industrial Information Integration, ICIICII 2016 | Year: 2016

Three-Level Inverter is quite a practical topological structure, but its own flaws lie in Neutral-Point Potential Balance. The article covers the impact of method of virtual space vector pulse width modulation on mid-point potential. The simulation model of Neutral-Point Potential Algorithm is established based on MATLAB. © 2016 IEEE.

Feng P.,Tsinghua University | Zhou Z.,China Building Technique Group Co. | Tian Y.,Tsinghua University | Ye L.,Tsinghua University
Tumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering | Year: 2014

An improved splice method for mid-diameter steel bars (10-16 mm) used in RC structures was developed, which can make the installation more easily and economic through the hybrid connection of welding and overlapping. In order to study the mechanical behavior of welding-overlap splices, a total of 138 steel bar splice tests were conducted, including both the steel-concrete interaction group and the lonely-steel group. Through the splice tensile experiment, the failure model and ultimate strength of the improved splice was summarized. Meanwhile, the failure mechanism was analyzed by the FEM analysis. The test results show that: hybrid connection of welding and overlapping is a simpler splice method which can realized the reliable splice in the RC structures, the ultimate load of the improved splice is sufficient for the application and the failure model is reasonable. Base on the test results, some suggestions for application were given. The economic analysis of a real application case is conducted, which shows a good prospect of proposed connection.

Huang Q.,China Academy of Building Research | Huang Q.,China Building Technique Group Co. | Li D.,China Academy of Building Research | Li D.,China Building Technique Group Co. | And 5 more authors.
Jianzhu Jiegou Xuebao/Journal of Building Structures | Year: 2016

A quasi-static cyclic test of a new structure system named the lightweight steel and lightweight concrete (LSLC) structure is presented, which uses cold-formed steel and foamed concrete as structural materials. In order to simulate the seismic response of the new structure system, a 3-story full scale model was constructed and tested under static cyclic lateral loading. The process of the design and construction for the test building is described. The damage state, hysteretic loops and inter-story drift of the test building are presented in detail. The seismic capacity of the test building was evaluated based on the ductility, stiffness degradation tendency, damping ratio and loading capacity. The test building shows enough loading capacity and ductility to meet the requirements corresponding to the seismic fortification intensity VII. It is indicated that the LSLC structure has a sufficient seismic capacity to become a low-rise and mid-rise construction option in the seismic region. © 2016, Editorial Office of Journal of Building Structures. All right reserved.

Ye J.L.,Hangzhou Residential Development Center Co. | Chen S.C.,Hangzhou Residential Development Center Co. | Bao L.Q.,China Building Technique Group Co.
Applied Mechanics and Materials | Year: 2013

Shear displacement method is used to predict the settlement of the grouted pile in this paper. An empirical relationship is used to determine the improvement of shear modulus for the soil around the grouted pile. A parameter is also proposed to represent the improvement of the shear modulus for the grouted soil at the pile tip. Shear displacement method is modified to consider the influence of grouting. The detailed calculation process of the method is described and determine of the parameter is also given in the paper. © (2013) Trans Tech Publications, Switzerland.

Fang K.,Zhejiang University | Xia T.,Zhejiang University | Bao L.,China Building Technique Group Co. | Ye J.,Hangzhou Residential Development Center Co. | Chen S.,Hangzhou Residential Development Center Co.
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | Year: 2013

Due to progressive blocking of cement grains within the soil matrix, filtration of grout plays a significant role during grout dispersion process. The influence of filtration on the grout dispersion in gravel is studied. The injectability criterion of the grout is first summarized. Then the linear filtration law is introduced into the mass balance relationships of water, cement and soil to develop a cement grout dispersion model in spherical coordinates with account for filtration. The comparison between model results and experimental data proves the validity of the given model and the necessity of considering the phenomenon of filtration. In addition, the influences of filtration on permeation grouting under different injection durations and water-cement ratios are also studied. The results reveal that the penetration resistance increases gradually due to grout filtration, leading to the increase in grouting pressure with time. For grout with smaller water-cement ratio, the grouting pressure is larger and the influence of filtration is more obvious.

Ma Y.-Y.,Metro Land Corporation Ltd | Duan J.,China State Construction Technical Center | Shao H.,China Building Technique Group Co.
Applied Mechanics and Materials | Year: 2014

In this paper, the two methods for the finite element analysis of foundation excitationwould be proved mathematically equivalent. Although the two methods, i.e. the method of degree-of-freedomtransformation and the Lagrange multiplier method,are absolutely different in appearance, but their mathematical essence would be proved completely identical. In other words, although the equations derived from the two methods have different degree-of-freedoms, i.e. the latter much more than the former, while in essence they could be deduced from each other and vice versa. And finally a numerical example will be presented and discussedto demonstrate the correctness of the present theory. © (2014) Trans Tech Publications, Switzerland.

Ma Y.-Y.,Metro Land Corporation Ltd | Duan J.,China State Construction Technical Center | Shao H.,China Building Technique Group Co.
Applied Mechanics and Materials | Year: 2014

In this paper, the stability analysis of a single-layer latticed shell structure is presented using ABAQUS, with the geometric nonlinearity considered. The load-displacement curves are calculated according to the elastic and elasto-plastic hypothesis respectively. The ultimate bearing capacity of the structure and its conceivable damage mode are estimated. Finally, the nonlinear stability of this structure is assecced and the further suggstions for improving the structural performance are presented. © (2014) Trans Tech Publications, Switzerland.

Wu Y.,China Building Technique Group Co. | Guo X.D.,Beijing University of Technology
Applied Mechanics and Materials | Year: 2013

Based on the research of domestic and foreign sports park design, This paper introduced the planning of a sports and leisure park in Huangcun Town, Daxing District, Beijing. The design scheme revolved on four aspects: the planning concept, the overall layout, the design of single building, the landscape design. All the aspects are strived to achieve harmony for natural and humane, ecological and landscape, tradition and modern. © (2013) Trans Tech Publications, Switzerland.

Feng S.J.,North China University of Technology | Feng S.J.,Beijing Forestry University | Sun S.G.,North China University of Technology | Zhao X.F.,North China University of Technology | Tan L.,China Building Technique Group Co.
Advanced Materials Research | Year: 2014

Considering the features of slope rock mass failure, this paper applies residual thrust method and linear programming theory on the basis of finite element method, to assess safety of each cell of slope rock mass in dangerous zone. According to the slip field method to determine three-dimensional slope slip surface, to deduce three-dimensional stability analysis method based on symmetry breaking, a C++ based 3D-slope program is developed for purposes of threedimensional slope stability analysis. Finally get the most dangerous landslide geometry and its safety factor, In the paper, combining with the engineering examples, the calculating results are comfortable to the practical failure. © (2014) Trans Tech Publications, Switzerland.

Huang Q.,China Building Technique Group Co. | Li D.,China Building Technique Group Co. | Wang J.,China Building Technique Group Co. | Chen C.,China Building Technique Group Co. | Zhang M.,China Building Technique Group Co.
Jianzhu Jiegou Xuebao/Journal of Building Structures | Year: 2016

A new high quality structural system suitable for low-rise and multi-story buildings was developed, which is named as the lightweight steel and lightweight concrete structure. It is composed of thin-walled steel and lightweight concrete and different from the traditional structure on construction mode. This structural system uses prefabricated thin-walled steel, cast-in-place lightweight concrete and permanently formwork, and so has significant characteristics in industrialization, material and labor saving, reduction of construction period, reuse of waste, and reduction of environment pollution. The research background, composition and technical characteristics of the new structure system are introduced. Then, the related research results of lightweight concrete, walls and slabs, full scale model building, connections and anchoring of lightweight steel, key points of construction technology and design method are presented. Futhermore, pilot projects and supporting standards are also introduced. And the economic comparative evaluation is conducted between the new structural system and the traditional structural system. Finally, the subsequent research contents and the application prospect are specified. © 2016, Editorial Office of Journal of Building Structures. All right reserved.

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