Seismic Damage Analysis on Double-Column Pier of Passenger Dedicated Line

2011 ◽  
Vol 243-249 ◽  
pp. 1508-1511
Author(s):  
Yu Li ◽  
Xi Zhu ◽  
Qing Shan Yang
Keyword(s):  
Damage Model ◽  
Damage Index ◽  
Seismic Damage ◽  
Response Analysis ◽  
Damage Analysis ◽  
Nonlinear Seismic Response ◽  
Fea Model ◽  
Seismic Motion ◽  
Study Results ◽  
Passenger Dedicated Line

Reasonable strong seismic motion records are selected according to the applicable Code of Seismic Design for Railway Engineering. By using FEA software, the FEA model of one double-column pier of passenger dedicated line is established with considering the effect of flexible base effects and seismic characteristic. Based on Park-Ang seismic damage model and nonlinear seismic response analysis, the seismic damage analysis on double-column pier of passenger dedicated Line is carried out. The study results are obtained as follow: 1) The seismic damage of bridge mainly happen during the early and middle stage of seismic motion. 2) There are still major discrepancies in the seismic damage made from the seismic records which come from the same site condition and have the same PGA. 3) Although PGA has a great effect on the seismic damage index, it has nothing to do with the happening time of max seismic damage index.

scholarly journals Seismic Damage Model of Bridge Piers Subjected to Biaxial Loading Considering the Impact of Energy Dissipation

2019 ◽  
Vol 9 (7) ◽  
pp. 1481 ◽  
Author(s):  
Shangshun Lin ◽  
Zhanghua Xia ◽  
Jian Xia
Keyword(s):  
Energy Dissipation ◽  
Structural Damage ◽  
Biaxial Loading ◽  
Mechanical Performance ◽  
Damage Model ◽  
Damage Index ◽  
Seismic Damage ◽  
Bridge Piers ◽  
Dissipated Energy ◽  
The Impact

The large degradation of the mechanical performance of hollow reinforced concrete (RC) bridge piers subjected to multi-dimensional earthquakes has not been thoroughly assessed. This paper aims to improve the existing seismic damage model to assess the seismic properties of tall, hollow RC piers subjected to pseudo-static, biaxial loading. Cyclic bilateral loading tests on fourteen 1/14-scale pier specimens with different slenderness ratios, axial load ratios, and transverse reinforcement ratios were carried out to investigate the damage propagation and the cumulative dissipated energy with displacement loads. By considering the influence of energy dissipation on structural damage, a new damage model (M-Usami model) was developed to assess the damage characteristics of hollow RC piers. The results present four consecutive damage stages during the loading process: (a) cracking on concrete surface, (b) yielding of longitudinal reinforcements; (c) spalling of concrete, and (d) collapsing of pier after the concrete crushed and the longitudinal bars ruptured due to the flexural failure. The damage level caused by the seismic waves can be reduced by designing specimens with a good seismic energy dissipation capacity. The theoretical damage index values calculated by the M-Usami model agreed well with the experimental observations. The developed M-Usami model can provide insights into the approaches to assessing the seismic damage of hollow RC piers subjected to bilateral seismic excitations.

Study on Seismic Damage Model with Double Variables of the SRHSHPC Composite Columns

2009 ◽  
Vol 417-418 ◽  
pp. 925-928
Author(s):  
Shan Suo Zheng ◽  
Liang Zhang ◽  
Bin Wang ◽  
Lei Li ◽  
Lei Zeng
Keyword(s):  
Seismic Performance ◽  
High Performance Concrete ◽  
Concrete Strength ◽  
Damage Model ◽  
Damage Index ◽  
Seismic Damage ◽  
Statistical Regression ◽  
Loading Cycle ◽  
Damage Models ◽  
History Of

The seismic performance and seismic damage model for steel reinforced high strength and high performance concrete (SRHSHPC) composite frame columns subjected to constant axial load and cyclically variety flexural loading was investigated experimentally. The main influencing parameters, including shear span ratio, axial compression ratio, stirrup ratio and concrete strength, on the seismic performance and seismic damage of the SRHSHPC frame columns is studied. From the test results, the failure mechanism is analyzed and damage quantization criterion is obtained. Several existing seismic damage models are comparatively analyzed. And then, the variation history of accumulated hysteretic energy of the specimens under different loading cycle indexes is figured out, and influence of different test parameters on it is also discussed. Finally, the damage index of the SRHSHPC columns is compared to the existing seismic damage models, and the double variables seismic damage model adapted for the SRHSHPC structure is established by statistical regression theory. The rule of damage evolvement for the specimens is proposed employing variation history of the damage index under different loading cycle indexes. The analytical results indicate that the seismic performance of the SRHSHPC composite column is good, and the double variables damage model could give a quantitative description for damaging process of the samples, which is a reference for seismic damage design of the SRHSHPC structure.

Component Seismic Damage Model for SRHSHPC Joints

2009 ◽  
Vol 417-418 ◽  
pp. 705-708
Author(s):  
Shan Suo Zheng ◽  
Bin Wang ◽  
Lei Li ◽  
Wei Wang ◽  
Jin Chuan He
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Damage Model ◽  
High Strength ◽  
Seismic Damage ◽  
Reduction Factor ◽  
Damage Analysis ◽  
Ultimate Deformation ◽  
Number Of Cycles ◽  
Relationship Of

The deficiency of present damage model is generalized by studying existing references. The mechanical properties of steel reinforced high strength and high performance concrete (SRHSHPC) members under monotonic loading, including the capacity of ultimate deformation, strength, stiffness, etc. are analyzed after the different number of cycles. The reduction factor is introduced, the dynamic variation relationship of ultimate deformation with the number of cycles is obtained, and the merits of existing damage model are utilized, finally the seismic damage model, which is suitable for SRHSHPC beam-column joints, is established. In order to verify the rationality of damage model, Opensees as a nonlinear analysis program is adopted to simulate SRHSHPC joints, the comparison of the numerical analysis results with experimental results shows that the proposed damage model can capture the behaviors of joints very well. The model can, therefore, be used to carry out seismic damage analysis of other SRHSHPC members.

Experimental Study on Seismic Damage Model of the SRHSHPC Composite Frame Columns

2008 ◽  
Vol 385-387 ◽  
pp. 145-148
Author(s):  
Shan Suo Zheng ◽  
Liang Zhang ◽  
Lei Li ◽  
Bin Wang ◽  
Ming Xie
Keyword(s):  
Concrete Strength ◽  
Damage Model ◽  
Damage Index ◽  
Seismic Damage ◽  
Damage Development ◽  
Damage Models ◽  
Composite Frame ◽  
History Of ◽  
Reversed Loading ◽  
Seismic Behaviors

Based on experimental investigation under low cyclic reversed loading, the seismic behaviors and seismic damage model for steel reinforced high strength and high performance concrete (SRHSHPC) composite frame columns are studied. Several existing seismic damage models are firstly presented and their characteristics are comparatively analyzed. From the test results of low cyclic reversed loading, the variation history of cumulative dissipated hysteretic energy of the SRHSHPC composite frame columns under different loading cycle levels is figured out, and the influence of axial compression ratio, shear span ratio, stirrup ratio and concrete strength on the cumulative dissipated hysteretic energy is also discussed. The damage index of the SRHSHPC composite frame columns is compared according to the existing seismic damage models, and the seismic damage model adapted for the SRHSHPC composite frame columns is established. According to the variation history of the damage index under different loading cycle levels, the rule of damage development for the SRHSHPC composite frame columns is proposed. The influence of axial compression ratio, shear span ratio, stirrup ratio and concrete strength on the damage development is also discussed. The results indicate that the seismic behaviors of the SRHSHPC composite frame column are outstanding, and the seismic damage model could give a quantitative description for damaging process of the samples, which is reference for establishing more rational damage criteria for the SRHSHPC earthquake-resistant composite structure.

scholarly journals Local Damage Indices of Frames Consisting of Composite Beams and RC Columns

2016 ◽  
Vol 10 (1) ◽  
pp. 280-292
Author(s):  
Wei Li ◽  
Linzhu Sun ◽  
Kejia Yang ◽  
Lei Wang ◽  
Dongyan Wu ◽  
...  
Keyword(s):  
Composite Structures ◽  
Damage Model ◽  
Damage Index ◽  
High Strength ◽  
Steel Beams ◽  
Local Damage ◽  
Composite Frame ◽  
Damage Indices ◽  
Study Results ◽  
Scope Of Application

The study is to propose the local damage indices of composite frame structures consisting of high-strength concrete columns confined by continuous compound spiral ties and steel beams (CCSTRCS), the local damage indices would lay a foundation for the study of the overall damage indices for composite CCSTRCS frame. The Mehanny damage model has been modified to predict the local damage behavior of composite CCSTRCS frames, it enlarges the scope of application for the composite structures compared with the previous work. The proposed model is validated by comparing with the present references. The study results suggest the different components corresponding to the extent of the damage and its damage index.

scholarly journals Seismic Damage Behavior of Aeolian Sand Concrete Columns with an Inner Square Steel Tube

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Yaohong Wang ◽  
Zeping Zhang ◽  
Qing Han ◽  
Qi Chu ◽  
Xiaoyan Ma
Keyword(s):  
Damage Model ◽  
Concrete Columns ◽  
Seismic Damage ◽  
Steel Tube ◽  
Aeolian Sand ◽  
Loading Test ◽  
Damage Behavior ◽  
Damage Indices ◽  
Study Results ◽  
Square Steel Tube

In order to promote the application of aeolian sand in steel-concrete composite structures, the aeolian sand concrete columns with an inner square steel tube is proposed in this paper. This kind of column is composed of aeolian sand concrete, reinforcing steel, and an inner square steel tube. The seismic damage behavior of the column was studied through cyclic loading test and damage analysis on seven specimens with different structural forms. The seismic damage indices of the specimens in this study include the failure mode, bearing capacity, ductility, stiffness, hysteresis behavior, and energy dissipation. Then, a damage model of this kind of column is proposed. The study results show that installing an inner square steel tube can significantly improve the seismic damage behavior of aeolian sand concrete columns. This mode of construction can be used to enhance the replacement percentage of aeolian sand. In addition, the damage model proposed in this paper agrees well with the experimental results and can be used to evaluate the damage degree of the aeolian sand concrete columns with an inner square steel tube.

Seismic Response Characteristics of Subway Station Structure

2013 ◽  
Vol 838-841 ◽  
pp. 1613-1619
Author(s):  
Hong Ni ◽  
Ming Hui Li ◽  
Xi Zuo
Keyword(s):  
Dynamic Characteristics ◽  
Damage Model ◽  
Damage Index ◽  
Subway Station ◽  
Energy Response ◽  
Element Analysis ◽  
Hysteretic Energy ◽  
Response Characteristics ◽  
Seismic Motion ◽  
Station Structure

The dynamic Davidenkov model is used to model dynamic characteristics of soils, and plastic-damage model is used to model dynamic characteristics of station structure concrete. So that, considering the influence of soil-station structure interaction for 2D finite element analysis, the dynamic interaction of soil-station structure is modeled. The damage characteristics and energy response of station structure under seismic motion is analyzed. The result shows that damping energy and hysteretic energy are monotone increasing under ground motion, and the seismic characteristic has significant effect on the energy response of subway station structure. Furthermore, concentration effect of hysteretic energy of subway station structure is measured by hysteretic energy density. It is found that the hysteretic energy is the most centralized in the column, so the dynamic response of the columns is the maximum. Furthermore, the nonlinear damage evolution law of station structure is analyzed. The law of local and global damage index is consistent essentially, and the damage index is increased by the effect of accumulative deformation.

Seismic Damage Law of Steel Reinforced High Strength and High Performance Concrete Frame Columns

2010 ◽  
Vol 450 ◽  
pp. 231-234 ◽  
Author(s):  
Shan Suo Zheng ◽  
Pi Ji Hou ◽  
Bin Wang ◽  
Lei Li ◽  
Zhi Qiang Li
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Concrete Strength ◽  
Damage Model ◽  
Damage Index ◽  
High Strength ◽  
Seismic Damage ◽  
Experimental Result ◽  
Concrete Frame ◽  
Damage Models

In this paper, the damage performance of 13 SRHSHPC frame columns are tested and analyzed under low cycle loading. The effect of concrete strength, axial compression ratio and shear span ratio on the damage of SRHSHPC frame columns is discussed, and then the experimental result is quantified with damage index. Based on existing seismic damage models, a new seismic damage model is put forward for SRHSHPC frame columns by a nonlinear combination of deformation and accumulative dissipation.

Seismic Response Analysis for Hong Kong-Zhuhai-Macau Bridge

2011 ◽  
Vol 250-253 ◽  
pp. 1628-1632
Author(s):  
Tao Wang ◽  
Jing Ning ◽  
Yu Li
Keyword(s):  
Seismic Response ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Nonlinear Characteristics ◽  
Nonlinear Seismic Response ◽  
Seismic Motion ◽  
Rubber Bearing ◽  
Lead Rubber Bearing ◽  
Seismically Isolated ◽  
Analysis Models

According to the behavior of seismically isolated continuous bridges, the bidirectional nonlinear characteristics of lead rubber bearing are taken into account by using two orthogonal nonlinear level spring elements. Based on the FEA software, the analysis models of seismically isolated and non-isolated continuous bridges are established. And the nonlinear seismic response for these analysis models is carried out under the function of the reasonably chosen seismic motion.

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