Applied Mechanics and Materials Vols. 638-640

Abstract: Chinese seismic code provision, for the energy dissipation structure, when the main structure into elastic-plastic stage, the system should be based on characteristics of the main structure, the use of static elastoplastic analysis and nonlinear time history analysis methods. In this paper, the static elastoplastic and elastic-plastic time history method of analysis and comparison to speed, such as type viscous damper type damper is not applicable to the static elastoplastic analysis.

Abstract: The deviation of microseismic station location will affect the microseismic source location accuracy in microseismic monitoring. The relationship between microseismic station location deviation and source location accuracy is studied in the paper. A global optimization algorithm, particle swarm optimization (PSO), is used to search for the source location. Results show that PSO method is good. The source location error increases with the microseismic station location error. The relationship between them is nonlinear. The microseismic sources outside the microseismic station array are more sensitive to the microseismic station location deviation than inside the microseismic station array. The bigger the microseismic station location error, the greater the difference. Therefore, when the microseismic source is outside the microseismic station array, it is more necessary to ensure the accuracy of microseismic station location.

Abstract: The seismic response of 4-span continuous bridges with different configurations has been investigated. In the series of bridges studied, the height of the central pier varies from 5 m to 100 m, while the heights of all the other piers remain the same. Using non-linear time history analysis, the internal forces at the bottom of individual piers have been predicted for each case. The correlation between the relative stiffness of adjacent piers and the ratio between the seismic response at the bottom of adjacent piers has been studied. Based on the results, in order to guarantee approximately balanced seismic response among all piers of a given bridge, a range of the relative column stiffness of two adjacent piers has been proposed.

Abstract: China is one of the countries with the most serious earthquake disaster in the world. Buildings damaged and collapsed caused by earthquakes are the main reason of the economic loss and casualties. Most of non-engineered buildings are self-built houses, which occupy a considerable proportion in damaged buildings during earthquakes. It is significant to statistic and to analyze these house damage data in former earthquakes for the seismic capacity evaluation of the non-engineered buildings. The main types of non-engineered buildings are wood house, earth and wood house, brick and wood house, and brick masonry house. It is the seismogenic zone provinces for Xinjiang, Qinghai, Gansu and Yunnan in China. Based on the four type houses in the four provincial regions. The article focused on the 105 reports of earthquake disaster selected from 1990 and 2013. And then the article demonstrated that the average damage ratio of different house types in these four provincial regions. Through the comparing of the average damage ratio of the same house types in the four regions, it is clearly to understanding the seismic capacity of these types of non-engineered buildings in the different regions.

Abstract: The deformation of isolation layer in base-isolated building can exceed original design during strong earthquake excitations, which will cause poundings between structure and surrounding retaining wall. Spring limiter installed in base-isolated building can protect the structure. Shaking table test of base-isolated model pounding with spring limiters were performed. The study find the deformation of isolation layer can be effectively reduced by spring limiters, and the deformation of the superstructure will increase slightly. Pounding between structure and spring limiters can arouse high frequency acceleration of building, but had little effect on velocity.Increasing the spring limiters will not change seismic total energy input on the structure, and most of the energy dissipate by the damping. Impact energy dissipation increases with reducing in the gap between structure and spring limiters.

Abstract: The intensity-reduced method based on fluid viscous dampers is proposed in this study. The analysis model of fluid viscous dampers is firstly introduced. The intensity-reduced design procedure is thoroughly discussed. Taking an 11-story reinforced concrete frame shear-wall structure as example, the intensity-reduced method is implemented in this study. The dynamic responses of the structure with and without fluid viscous dampers, including the maximum inter-story drift angle, base shear force, are discussed. The results show that the proposed intensity-reduced method for structure with fluid viscous dampers is feasible, and the responses of structure satisfy the code for seismic design of buildings. The earthquake input energy is mainly dissipated by fluid viscous dampers, which guarantees the safety of the main structure.

Abstract: In this paper, the probabilistic model is used to quantify the uncertainty of structural resistance, and the convex model is used to quantify the seismic uncertainty. The distribution parameters for the probabilistic model, together with the interval range for the convex model, are obtained through pushover analysis. Two-level function equation method is employed to calculate the seismic reliability of the structure. Case study shows that compared with the classical probability method, the proposed method is more simple and reasonable for seismic reliability analysis.

Abstract: The choice of damage index and quantify of the performance goal is an important part of the theory of performance-based seismic design. This paper introduces research results of shear wall structure damage model at home and abroad, combined with the experimental study on the seismic behavior of shear wall structure at home and abroad, and discusses the application in practical engineering of the shear wall structure damage, puts forward the remains problem to be further in-depth study.

Abstract: This document conducts simulation analysis on spherical anti-seismic bearing employing the Finite Element Methods and PSD analysis of random vibration based on modal analysis, from which results as statistical parameters of random vibration of structure and demonstrates: this specific anti-seismic spherical bearing satisfies industry security demands related.

Abstract: In this paper, an analysis of seismic performance was done about cast-in-situ and prefabricated wall - beam plane connecting joints by a nonlinear finite element analysis software. In ensuring parameters and loading unchanged, the stress nephogram was acquired on cast-in-situ and prefabricated wall - beam plane connecting nodes in the same low-cyclic reversed load test and two components hysteresis curves and skeleton curves were extracted. Through comparison and analysis. In the research scope, comparing with cast-in-situ joints, prefabricated wall - beam joints had high bearing capacity and good ductility. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.