Response and Parameter Analysis of Reinforced Retaining Wall under Earthquake Loading

2012 ◽  
Vol 268-270 ◽  
pp. 702-705
Author(s):  
Jia Liang
Keyword(s):  
Seismic Response ◽  
Axial Force ◽  
Retaining Wall ◽  
Seismic Loading ◽  
Mechanical Analysis ◽  
Seismic Intensity ◽  
Parameter Analysis ◽  
Earthquake Loading ◽  
Reinforced Retaining Wall ◽  
Physical Mechanics

FEM is use for the mechanical analysis of reinforced retaining wall under earthquake loading. The main results are as following. The displacement and axial force increased with the increased seismic intensity. The displacement and axial force decreased with the increased the length of bar strip. The displacement and axial force decreased with the decreased the spacing of bar strip. The displacement and axial force decreased with the increased physical mechanics parameters of filling. Seismic response was similar under bilateral seismic loading and horizontal seismic loading, seismic response was slightly larger under bilateral seismic loading.

Study on the Behavior of Reinforced Retaining Wall Under Earthquake Loading Using FEM Analysis

2011 ◽  
Vol 421 ◽  
pp. 713-716
Author(s):  
Liang Jia
Keyword(s):  
Retaining Wall ◽  
Fem Analysis ◽  
Mechanical Analysis ◽  
Distribution Law ◽  
Nonlinear Fem ◽  
Plastic Model ◽  
Elastic Plastic ◽  
Backfill Soil ◽  
Pulling Force ◽  
Reinforced Retaining Wall

Nonlinear FEM (ADINA) is used for the mechanical analysis of reinforced retaining Wall. In this analysis,3-D nonlinear FEM model is built in consideration of the cooperation and interaction among backfill soil, panel and reinforcement strip; the backfill soil is simulated by nonlinear static and dynamic elastic-plastic model; the reinforcement is simulated by the dual-phase enhanced linear elastic-plastic model which can describe the intensified features of the reinforcement; the interaction of soil and retaining structures is simulated by the friction-element. The application to a project yields the distribution law of the strip’s most dollar point of force and the changing rules of the strip’s pulling force around earthquake.

Study the Axial Force-Time History of Reinforced Retaining Wall under Earthquake Loading

2012 ◽  
Vol 268-270 ◽  
pp. 802-805
Author(s):  
Jia Liang
Keyword(s):  
Axial Force ◽  
Retaining Wall ◽  
Time History ◽  
Nonlinear Fem ◽  
Plastic Model ◽  
Elastic Plastic ◽  
Backfill Soil ◽  
Before And After ◽  
Force Time ◽  
Reinforced Retaining Wall

In this analysis, 3-D nonlinear FEM model is built in consideration of the cooperation and interaction among backfill soil, panel and reinforcement strip; the backfill soil is simulated by nonlinear static and dynamic elastic-plastic model; the reinforcement is simulated by the dual-phase enhanced linear elastic-plastic model which can describe the intensified features of the reinforcement; the interaction of soil and retaining structures is simulated by the friction-element. By comparison of before and after earthquake, result is get of the axial force difference reinforcement layer. The increased maximum location is close to toe of the wall.

Floating Roof Influence on Seismic Response of Large Vertical Storage Tank

2013 ◽  
Vol 671-674 ◽  
pp. 1399-1402
Author(s):  
Ying Sun ◽  
Jian Gang Sun ◽  
Li Fu Cui
Keyword(s):  
Seismic Response ◽  
Storage Tank ◽  
Numerical Solutions ◽  
Fluid Pressure ◽  
Seismic Intensity ◽  
Site Conditions ◽  
Storage Tanks ◽  
Analysis Model ◽  
Base Shear ◽  
The Impact

To study the impact of floating roof on seismic response of vertical storage tank structure system subjected to seismic excitation, select 150000m3 storage tanks as research object, and the finite element analysis model of storage tanks with and without floating roof were established respectively. The seismic response of these two types of structure in different site conditions and seismic intensity were calculated and the numerical solutions were compared. The results show that floating roof has little impact on base shear and base moment in different site conditions and seismic intensity. Floating roof can effectively reduce the sloshing wave height. The influence of floating roof on dynamic fluid pressure decreases with the increase of seismic intensity, which is less affected by ground conditions.

Analysis of Structural Parameters of MSCS on of the Overall Failure Probability of the Structure

2012 ◽  
Vol 256-259 ◽  
pp. 635-640
Author(s):  
Jian Jun Ye ◽  
Xun An Zhang ◽  
Xian Jie Wang
Keyword(s):  
Seismic Response ◽  
Dynamic Characteristics ◽  
Failure Probability ◽  
Structural Parameters ◽  
Seismic Intensity ◽  
Regular Pattern ◽  
Actual Design ◽  
Structural Mass ◽  
Overall Reliability

The randomness of value of tuned sub-structure mass and rigidity is comparatively large because of the needs of actual projects. Based on the dynamic characteristics and reliability of MSCS, the seismic response of the mega structure and the overall failure probability are discussed with the value of tuned sub structural mass and rigidity under different seismic intensity. It is shown that tuned sub structural mass and rigidity have significant affection on the overall reliability of structure, and seismic intensity has not interfere this regular pattern. Therefore, structural parameters of optimization which are referred to the regular pattern should be considered in the actual design in order to further enhance seismic capability of MSCS.

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