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Teng J.,Harbin Institute of Technology | Guo W.,RBS Architectural Engineer Design Associates | Zhang H.,The Architectural Design and Research Institute of Guangdong Province | Li Z.,Harbin Institute of Technology
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

Diagrid tube structures have advantages for constructing high-rise buildings due to their great rigidity. However the nonlinear seismic performances of this type of structures are not yet clearly understood, so the order of yield of the structure components, inclined column force and yield mechanism and diagrid tube seismic failure path, all of which are quite important problems in seismic design, are not clear. Nonlinear seismic analysis of typical high-rise diagrid tube-core tube structure is carried out and a pseudo-static test on typical diagrid tube module substructure is accomplished to study the components yield order, inclined column force, column yield mechanism and diagrid tube seismic failure path. Source

Dong S.,Zhejiang University | Zhao Y.,Zhejiang University | Xing D.,The Architectural Design and Research Institute of Guangdong Province
Frontiers of Structural and Civil Engineering | Year: 2012

Modern long-span space structures, developed during the 1970s and 1980s, are light and effective structures based on new technologies and light-weight high-strength materials, such as membranes and steel cables. These structures include air-supported membrane structures, cable-membrane structures, cable truss structures, beam string structures, suspen-domes, cable domes, composite structures of cable dome and single-layer lattice shell, Tensairity structures and so forth. For the premodern space structures widely used since the mid-twentieth century (such as thin shells, space trusses, lattice shells and ordinary cable structures), new space structures have been developed by the combination of different structural forms and materials. The application of prestressing technology and the innovation of structural concepts and configurations are also associated with modern space structures, including composite space trusses, open-web grid structures, polyhedron space frame structures, partial double-layer lattice shells, cable-stayed grid structures, tree-type structures, prestressed segmental steel structures and so forth. This paper provides a review of the structural characteristics and practical applications in China of modern rigid space structures, modern flexible space structures and modern rigid-flexible combined space structures. © 2012 Higher Education Press and Springer-Verlag Berlin Heidelberg. Source

Yi W.,Hunan University | Pan B.,Hunan University | Lu Y.,The Architectural Design and Research Institute of Guangdong Province
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

An experimental investigation of the shear behavior of 18 reinforced concrete beams was conducted with a stiff test facility. Two series of beam tests were performed, with one series of beams being reinforced with grade HRB500 steel stirrups and the other series without web reinforcement. Primary parameters were the shear span-depth ratio and concrete compressive strength. The complete load-midspan deflection curves, including the post-peak portion, were obtained. Based on the experimental data and observations, the shear capacity and ductility of the beams are analyzed. It is shown that the shear span depth ratio significantly affects the shear behavior of the beams with or without web reinforcement, the failure of the beams with web reinforcement should not be considered as brittle, and the diagonal crack width of the beams with web reinforcement in service is within the criterion of the current Chinese design code. The shear capacity of beams with various grades of concrete and shear span depth ratios reinforced with grade HRB500 web reinforcement can be conservatively predicted with the formula in the current Chinese code. Source

Yi W.-J.,Hunan University | Liu X.,The Architectural Design and Research Institute of Guangdong Province
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2010

In modal experiment of a structure, because of environment effect, instrument equipment, human error in operating, and the simplification in modal analysis, the uncertainty factors were involved into the measured modal parameters. In order to evaluate the statistical characteristics of physical parameter correctly, it is necessary to take the uncertainty of modal parameters measured in testing into account. Based on Bayesian evaluatiom, in this paper, a conjugate prior probability density function is seclected, the posterior probability density function is induced combining with test data, and then the mean and variance of the natural frequencies were obtained. A modal experiment was conducted on a four-story reinforced concrete frame structure. The test results show that when a large of samples is not available, the length of confident interval of mean and variance are shortened obviously by taking full use of prior information and test data in field to evaluate the uncertainties of natural frequencies, that is meaningful in practice. Source

Gong J.,The Architectural Design and Research Institute of Guangdong Province | Gong J.,Guangzhou University | Zhou Y.,Guangzhou University | Deng X.,Guangzhou University
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

The basic principle of friction pendulum bearing (FPB) is introduced, FPB isolated frame structure models are built by adopting the FP model considering the dynamic axial force and biaxial effect, modal analysis, response spectrum analysis and time history analysis of FPB isolated and non-isolated frame structures are conducted in ETABS, SAP2000 and MIDAS. Results show that: installing FPB can effectively control the seismic response of structure, including displacement, acceleration, base shear, etc., internal forces of structural members are reduced. The hysteretic energy dissipation behavior of FPB under rare earthquake is performed into fuller play than that under conventional earthquake, the decreasing amplitude of structural response is obvious, and the seismic reduction effect is more ideal. Source

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