Anhui Provincial Civil Structural and Material Laboratory

Hefei, China

Anhui Provincial Civil Structural and Material Laboratory

Hefei, China

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Jiang Q.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory | Lian X.,Anhui Engineering Consulting Institute | And 2 more authors.
Jiangsu Daxue Xuebao (Ziran Kexue Ban)/Journal of Jiangsu University (Natural Science Edition) | Year: 2010

To study the superimposed slab shear walls and provide the reliable scientific basis for the local standards, four superimposed slab shear walls with edge restricted measures of two different forms and two general shear walls were designed. Comparason of the seismic performance on superimposed slab shear walls with two general shear walls under combined constant vertical load and low cycle lateral load were conducted. Hysteresis property and energy dissipation were analyzed systematically. Based on energy method, the damping energy dissipation in the total input energy has been studied and the damping coefficient has been worked out. The experimental results show that the seismic behaviors of the superimposed slab shear walls with concealed columns of two different forms. The energy dissipation and damping coefficient of superimposed slab shear walls and general shear walls are also similar. The damping coefficient of superimposed slab shear walls is the same as general wall for dynamic analysis.


Xie L.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory | Chong X.,Hefei University of Technology | And 2 more authors.
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

In order to study the numerical simulation method of the seismic performance of reinforced concrete column, numerical simulation of 2 column specimens and 4 columns of Tsinghua University under low cyclic and reciprocal load are carried out by the use of nonlinear-beam-column element based on fiber model in finite software OpenSees in this paper. The comparison of simulated results and experimental results indicates that nonlinear-beam-column element can be efficiently used to simulate the hysteresis response and the characteristic of energy dissipation of columns, and the constitutive model of confined concrete based on modified Kent-Park method can reflect mechanical characteristics of columns.


He L.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory
Advanced Materials Research | Year: 2011

This paper presents the nonlinear dynamic simulation analysis of a shaking table test specimen, which was a twelve- story reinforced concrete frame and tested under base excitations representing four earthquake records of increasing intensity. Owing to the length constraint of the paper, three cases are used for the simulation. The numerical simulation of the test model is conducted utilizing the finite element analysis procedure CANNY, and the analysis results include the natural frequency, response history of the frame and the damage evolution. It is concluded from comparisons between experimental results and the numerical simulation ones that the latter matches well with the former, therefore the validity of the analytical method and model for simulation of RC frame shaking table test is proved. © (2011) Trans Tech Publications.


Xie L.-L.,Hefei University of Technology | Ye X.-G.,Hefei University of Technology | Ye X.-G.,Anhui Provincial Civil Structural and Material Laboratory | Chong X.,Hefei University of Technology | And 2 more authors.
Gongcheng Lixue/Engineering Mechanics | Year: 2014

In order to study the numerical simulation method of the joints of reinforced concrete frame, numerical simulation is performed by using the Beam Column Joint element in the finite element software OpenSEES in this paper. Two principal factors have been investigated, including the inelastic shear behavior of concrete and the anchoring and slipping behavior of longitudinal reinforcement in the core area of joint. This element in OpenSEES is used to simulate a reinforced concrete side joint and five middle joints under low cyclic loading. The comparison of simulated result and experimental result indicates that the proposed model can be used efficiently in simulating the nonlinear response of joints.


He L.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory
Advanced Materials Research | Year: 2012

Determination of a SDOFS elastic input energy is the primary problem to solve for energy-based design approach. The effect of ground motion and damping ratio were analyzed on the input energy spectra. I e is selected as the compound ground motion intensity indicator to represent the damage potential of strong ground motion. Through inputting of 188 seismic records according to the site classification of Chinese seismic code, three-segment elastic energy spectra are proposed based on normalization methods. The calculation formula of the peak and the value of long-period section of the input energy spectra are presented for four categories of site conditions by statistical analysis. Moreover, calculation procedure of the total energy input is given in the paper. © (2012) Trans Tech Publications, Switzerland.


He L.,Hefei University of Technology | Ye X.-G.,Hefei University of Technology | Ye X.-G.,Anhui Provincial Civil Structural and Material Laboratory
Gongcheng Lixue/Engineering Mechanics | Year: 2013

Determination of the elastic-plastic input energy for a SDOF system is a primary issue in the energy-based design approach. The paper selects 188 seismic records according to the site classification of Chinese seismic code, and then proposes three-segment elastic input energy spectra based on normalization methods. On this basis, the effect of strength reduction factor and damping ratio are analyzed on the elastic-plastic input energy spectra. The results indicate that the strength reduction factor and the damping ratio have significant impact on reducing energy spectrum peak value; the weakening action of damping ratio is impaired when strength reduction factor is bigger. According to the statistics of the influencing factors on elastic-plastic energy spectrum, the correction coefficient of the peak and long period segment is put forward through the 2-order fitting. Process to determine the elastic-plastic SDOF system energy spectra are suggested according to the study.


He L.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory
Applied Mechanics and Materials | Year: 2012

Base on 8 column test data obtained under low cyclic loading test, our study group conducted a comparative study of the four categories of damage index models. Different damage index models were used to calculate the damage index of the same column, and calculation results show that the different models give quite different result on the same column damage, and corresponding conclusions of the study are presented on this basis. © (2012) Trans Tech Publications, Switzerland.


Wang D.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory | Chang L.,Hefei University of Technology
Acta Seismologica Sinica | Year: 2011

Establishing a simplified applicable design input energy spectrum is the basis of applying the energy method to practical engineering design and verification. This paper has chosen 694 horizontal seismic records on class I, II and III sites, and analyzed energy spectrum with different classification of design earthquakes and site classes. The correlation between 12 different ground motion parameters and the energy spectrum is examined, and a ground motion parameter among them having strong relation with ground motion input energy is selected. Based on the provisions of fortification intensity and security standard in the present code, a new parameter of classification of design earthquake is put forward and the corresponding design input energy spectrum for damping ratio of 5% of the elastic single degree of freedom system is built. Furthermore, some valuable recommendations for using the energy-based design method and selection of input ground motion are proposed.


Jiang Q.,Hefei University of Technology | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory | Chong X.,Hefei University of Technology | Chong X.,Anhui Provincial Civil Structural and Material Laboratory
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

The superimposed slab shear wall system, as a new lateral force resistant system, possess several advantages compared to normal shear wall systems, such as good quality control, speedy construction, low construction cost and high level of industrialization. To systematically analyze the superimposed slab shear walls and to provide the reliable scientific basis for Technical specification for superimposed slab concrete shear wall structure, four superimposed slab shear walls with two different forms of edge restriction measures and two general shear walls were designed. Comparative experimental studies of the superimposed slab shear walls and two general shear walls under low cyclic loading were conducted. A calculation model for the superimposed slab shear walls was established. The calculation results and the measurement data were in good agreement.


Chong X.,Hefei University of Technology | Chong X.,Anhui Provincial Civil Structural and Material Laboratory | Ye X.,Hefei University of Technology | Ye X.,Anhui Provincial Civil Structural and Material Laboratory | And 2 more authors.
Proceedings of the 12th International Symposium on Structural Engineering, ISSE 2012 | Year: 2012

To evaluate seismic behavior of the superimposed semi-precast RC wall structures, two full-scale I-shaped cross section specimens consisting of the perpendicular walls and the T-shaped edge elements were tested under cyclic reversed loads. The test results indicate that inelastic deformation of the semi- precast RC wall concentrated near the horizontal connections of the wall and foundation, while damage of the wall panel is relative minor; the test specimens have enough strength and stiffness; with opening of the horizontal gap between the wall and foundation, part of the longitudinal reinforcing bars ruptured, resulting in decreasing of the ductility, however, the specimens have enough deformation ability, and the maximal drift requirement of Chinese seismic design code could be fulfilled; since no axial load was conducted to the specimens, obvious shear slip between the wall and foundation was observed during the test; the specimens have steady hysteresis behavior, and the hysteresis loops present obvious pinching character due to the horizontal shear slip; the cast in place T-shaped edge member could work well with the superimposed walls, while concrete in the edge member was damaged severely, since the concrete strength is lower.

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