The Study on Infilled Walls Effect in RC Frame Infilled Wall Structure

2013 ◽  
Vol 353-356 ◽  
pp. 1783-1790
Author(s):  
Qing Li Meng ◽  
Chun Yu Chu ◽  
Jun Chen
Keyword(s):  
Finite Element ◽  
Plastic Hinge ◽  
Wall Structure ◽  
Rc Frame ◽  
Damage State ◽  
Finite Element Software ◽  
Out Of Plane ◽  
Depth Study ◽  
Nonlinear Numerical Simulation ◽  
Rare Earthquake

The seismic damage and even collapse of the infilled walls in RC frame infilled wall structure is the issue that needs thorough study, In this paper, firstly introduces the improved infilled wall model which can consider the interaction of in-plane and out-of-plane, and can judge the damage state of infilled walls, as well as the interaction between RC frame and infilled walls. Then, based on the finite element software OpenSees, under rare earthquake, performed the nonlinear numerical simulation of two finite element models-RC frame without infilled walls and RC frame with infilled walls, comparative analysis differences of both plastic hinge zone’s steel strain, drift and acceleration response, and in-depth study of the infilled walls effect in RC frame infilled wall structure and reason analysis.

Linear analysis of a two-dimensional multistorey reinforced concrete frame under high temperature at different column locations

2019 ◽  
Vol 10 (3) ◽  
pp. 317-323 ◽  
Author(s):  
Parthasarathi N. ◽  
Satyanarayanan K.S. ◽  
Thamilarau V. ◽  
Prakash M. ◽  
Adithya Punnapu
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
High Temperature ◽  
Lateral Displacement ◽  
Progressive Collapse ◽  
Linear Analysis ◽  
Rc Frame ◽  
Reinforced Concrete Frame ◽  
Content Type ◽  
Finite Element Software

Purpose The purpose of this study is to investigate the influence of progressive collapse under high temperature for a reinforced concrete (RC) frame. An analytical programme was analysed for a two-bay five-storey RC frame exposed to high temperature at different column locations. Design/methodology/approach The effects of high temperature protections and locations (i.e. corner, middle and intermediate) on collapse conditions and load distributions were studied for the steady-state linear analysis using finite element software. Findings The results show that the frame will not collapse suddenly at temperatures up to 400°C. This is attributed to an increase in the deflections of the column, which increases the lateral displacement of adjacent heated columns and governs their buckling. This indicates that the temperature rating in the column against collapse can occur at a range of 500°C-600°C compared to that of individual members. The collapse pattern of RC frames designed as ordinary moment resisting frames, and under ordinary load, combinations is based on GSA guidelines. The results for displacement, stress and axial force were collected and discussed. Originality/value The two-bay five-storey frame has been created in finite element software, and linear analysis is used to perform this study with a different temperature.

Seismic Performance Analysis of a High-Rise Structure with Multi-Short Columns

2014 ◽  
Vol 578-579 ◽  
pp. 137-140
Author(s):  
Ri Rong Fu ◽  
Lan Wen Li ◽  
Xin Yan Yuan ◽  
Kang Ning Liu ◽  
Ran Li
Keyword(s):  
Seismic Performance ◽  
Pushover Analysis ◽  
Seismic Intensity ◽  
Wall Structure ◽  
Finite Element Software ◽  
Weak Beam ◽  
Short Columns ◽  
Beam Design ◽  
Rare Earthquake ◽  
Shear Frame

This paper aimed at a tall frame-shear wall structure contains multi-short columns, and did pushover analysis to this structure with finite element software, and evaluated its seismic performance under rare earthquake in seismic intensity of 6 degrees. It concluded that the structure can meet the "earthquake does not fall" seismic requirements, and will not appear the cut destruction of shear frame short columns, and can achieve "strong column weak beam" design requirements.

Behavior of Low, Medium and High Rise Reinforced Concrete Frame with Infill Using ATENA 2D

2020 ◽  
Vol 17 (9) ◽  
pp. 4287-4293
Author(s):  
D. Santhosh ◽  
R. Prabhakara ◽  
M. D. Ragavendra Prasad
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Nonlinear Behavior ◽  
Masonry Wall ◽  
Nonlinear Behaviour ◽  
Rc Frame ◽  
Reinforced Concrete Frame ◽  
Analysis And Design ◽  
High Rise ◽  
Finite Element Software

The Low, Medium and High rise reinforced concrete (RC) buildings are common in all cities in all countries. Unreinforced masonry wall (URW) is commonly used in low, medium and high rise building as a partition wall both in interior and exterior of building. But structural designers are not considered URW in analysis and design of buildings. This URM wall as an infill plays a very important role in structure subjected to lateral load. So it is very essential to know the nonlinear behavior of low, medium and high rise frame with and without infill. To conduct experiment for understanding the nonlinear behaviour of low, medium and high rise RC frame is very expensive and need good sophisticated testing facilities. With the available many finite element softwares, it is easy to create model and to know the performance of structure. So in this study, a finite element software ATENA 2D (2003) were used to conduct nonlinear analysis for capture nonlinear behaviour of low, medium and high rise RC frame with infill and without infill. Load versus displacement graphs, magnitude of principal compressive stresses, magnitude principal tensile stresses, stress contours, and cracks pattern are used to know the performance of low, medium and high rise RC frame with infill.

scholarly journals Seismic Response of the Three-Span Bridge with Innovative Materials Including Fault-Rupture Effect

2018 ◽  
Vol 2018 ◽  
pp. 1-18 ◽  
Author(s):  
Jiping Ge ◽  
M. Saiid Saiidi
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Plastic Hinge ◽  
Time History ◽  
Nonlinear Time History Analysis ◽  
Ground Displacement ◽  
Finite Element Software ◽  
Near Fault ◽  
Residual Displacements ◽  
Parallel Direction

The seismic performance of the SR99 Bridge with conventional and advanced details in Seattle, Washington, was studied via a nonlinear, time history analysis of a multidegree of freedom model. The bridge consists of three spans supported on two single-column piers and will be the first built bridge in the world in which superelastic shape memory alloy (SMA) and engineered cementitious composite (ECC) are implemented to reduce damage at plastic hinges and minimize residual displacements. Existing finite-element formulations in the finite-element software OpenSees are used to capture the response of the advanced materials used in the bridge. The earthquake induced by strike-slip fault was assumed to produce a surface rupture across the SR99 Bridge. The effect of the rupture was modeled by a static, differential ground displacement in the fault-parallel direction across the rupture. The synthetic suite of scaled bidirectional near-fault ground motions used in the analysis contains common near-fault features including a directivity pulse in the fault-normal direction and a fling step in the fault-parallel direction. Comparisons are made on behavior of two different bridge types. The first is a conventional reinforced concrete bridge and the second is a bridge with Nickel-Titanium (NiTi) SMA reinforcing bar at the plastic hinge zone and ECC in the whole column. Fault-parallel near-fault earthquakes typically exhibit a static permanent ground displacement caused by the relative movement of the two sides of the fault. When the fault is located between piers, the pier shows a higher demand. Fault-normal analysis results show effectiveness of the innovative interventions on the bridges in providing excellent recentering capabilities with minimal damage to the columns. But the maximum drift computed in the SMA bridge is slightly higher than reinforced concrete (RC) bridges, contributed by comparatively low stiffness of the superelastic SMA bars compared to the steel reinforcing bars.

scholarly journals Experimental and Finite Element Research on the Failure Mechanism of C/C Composite Joint Structures under Out-of-Plane Loading

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2922
Author(s):  
Yanfeng Zhang ◽  
Zhengong Zhou ◽  
Zhiyong Tan
Keyword(s):  
Finite Element ◽  
Failure Modes ◽  
Displacement Curve ◽  
Finite Element Software ◽  
Pull Out ◽  
Composite Joint ◽  
Element Simulation ◽  
Out Of Plane ◽  
The Matrix ◽  
Failure Morphology

The loading and the failure mode of metal hexagon bolt joints and metal counter-sunk bolt joints of C/C composites were investigated. The joints were tested for out-of-plane loading at two temperatures (600 °C and 800 °C). The failure morphology of a lap plate was investigated, and the main failure modes were determined. The typical load–displacement curve was characterized and the test was simulated using ABAQUS non-linear finite element software. Furthermore, progressive damage was induced, and comparison of the finite element simulation with the experimental data revealed that the failures mainly occurred in the lower lap plate and were dominated by cracking and delamination of the matrix, accompanied by the pull-out of a small number of piercing fibers. Finally, the influences of the temperature, nut radius, and fixture geometry on the critical load were determined via simulation.

Finite Element Analysis of Large Space Shear Wall Structure

2012 ◽  
Vol 549 ◽  
pp. 807-811
Author(s):  
Li Jian Zhou ◽  
Ming Kang Shan ◽  
Jin Zhou He ◽  
Yuan Gang Fan
Keyword(s):  
Finite Element ◽  
Shear Walls ◽  
Shear Wall ◽  
Practical Significance ◽  
Wall Structure ◽  
Response Analysis ◽  
Large Space ◽  
Element Analysis ◽  
Finite Element Software ◽  
Different Thickness

Established three-dimensional calculation model of three large space shear wall structures of different thickness, using finite element software ANSYS to calculate the seismic response analysis of these models,obtained time-displacement curves and stress distribution under earthquake structures of three large space shear walls of different thickness, and its comparative analysis; shows practical significance of large space shear wall structure.

Analog Static Elasto-Plastic Analysis for Shaped Column Frame Experiment

2013 ◽  
Vol 368-370 ◽  
pp. 1600-1605
Author(s):  
Chao Sun ◽  
Shu Li Zhao ◽  
Wen Jing Chai ◽  
Ze Qun Liu
Keyword(s):  
Finite Element ◽  
Plastic Hinge ◽  
Ratio Model ◽  
Finite Element Software ◽  
Plastic Analysis ◽  
The Common ◽  
Repeated Load ◽  
Experimental Values ◽  
Nonlinear Performance ◽  
Good Agreement

In this paper, the 1/3 ratio model of reinforced concrete deformed column for low-cycle repeated load experiment is adopted, the common finite element software SAP2000 is used for analyzing the models performance of bearing capacity, ductility, Occurrence order of plastic hinge, the yield mechanism and inter-layer displacement. The results show that the selected madel can simulate the nonlinear performance of the shaped column frame accurate, the calculated value is in good agreement with the experimental values.

Reinforced Concrete Frame - Shear Wall Structure, Floor Open Hole Static Finite Element Analysis

2013 ◽  
Vol 788 ◽  
pp. 521-524 ◽  
Author(s):  
Kai Qin ◽  
Fu Ma
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Center Of Mass ◽  
Wall Structure ◽  
Reinforced Concrete Frame ◽  
Element Analysis ◽  
Weak Layer ◽  
Finite Element Software ◽  
Open Hole ◽  
Irregular Buildings

along with the diversification of architectural image and the construction of complicated functions, there are more and more irregular buildings. Floor open hole especially floor open hole is the typical representative of irregular buildings. Floor open hole lead to floor in-plane rigidity weakening that open hole level stiffness drop form weak layer, the structure of the center of mass and centroid offset weak layer is larger, so in the earthquake under the action of stress is more complicated. Large-scale finite element software ANSYS is applied in this article simplified single documents across the floor in the middle of the hole structure is simulated and analyzed under the static load of open hole plate, beam and column structure deformation and stress distribution, and will not open holes in the floor and open hole in the floor slab under the action of horizontal static stress were analyzed.

Stress perturbations around the deep salt structure of Kuqa depression in the Tarim Basin

2019 ◽  
Vol 7 (3) ◽  
pp. T647-T656 ◽  
Author(s):  
Mingwen Wang ◽  
Yunqiang Sun ◽  
Gang Luo ◽  
Rui Zhang
Keyword(s):  
Finite Element ◽  
Tarim Basin ◽  
Vertical Direction ◽  
Tectonic Stress ◽  
Von Mises Stress ◽  
Economic Losses ◽  
Kuqa Depression ◽  
Finite Element Software ◽  
Out Of Plane ◽  
Salt Structure

Drilling into and around salt bodies can present different kinds of geohazards, such as shrinkage or stuck and crushed casings, resulting in well abandonment and huge economic losses. These engineering disasters are more likely to happen when ignoring the stress perturbations caused by the geomechanical interactions between the salt and surrounding sediments. For a better understanding of the stress perturbations, we use a commercial finite-element software, Abaqus, to build a 2D plane-strain finite-element model of the salt structure of Kuqa depression in the Tarim Basin and simulate the stress perturbations around the salt body in the environment of tectonic compression. By analyzing the patterns of stress perturbations due to different salt geometries such as concave and convex salt, we have come to the conclusion that the convex salt causes compressional stresses on the horizontal and out-of-plane directions but the extensional stress on the vertical direction. On the contrary, the concave salt induces extensional stresses on the horizontal and out-of-plane directions but compressional stress on the vertical direction. The results of stress perturbations near a salt structure in the environment of compressional tectonic stress are opposite to those in the environment of extensional tectonic stress, such as the Mad Dog, in the deepwater northern Gulf of Mexico. The shear stress ([Formula: see text]) near the salt structure is bigger than those far away from the salt structure, but is much smaller when compared with horizontal, vertical, and out-of-plane stresses ([Formula: see text]) in the profile, in the salt body, horizontal stress drops and converges to vertical stress and von Mises stress ([Formula: see text]) equals to zero due to isotropic stresses. The results provide scientific insights on stress perturbations and wellbore drilling design near salt structures in the Tarim Basin.

Pushover Analysis of Eccentric High-Rise Single-Tower Building’s Frame-Shear Wall Structure

2012 ◽  
Vol 226-228 ◽  
pp. 1060-1065 ◽  
Author(s):  
Xiao Jie Cheng ◽  
Yun Chao Tai ◽  
Li Li Jia
Keyword(s):  
Rare Case ◽  
Plastic Hinge ◽  
Center Of Mass ◽  
Pushover Analysis ◽  
Shear Wall ◽  
Structure Design ◽  
Wall Structure ◽  
High Rise ◽  
Architecture Style ◽  
Rare Earthquake

High-rise building with podium is a common seen architecture style in China. Nowadays more designers inclined not to separate the main and podium, but this would lead to the eccentric between the center of mass of the tower and base, which may exceed the code requirement when the ratio of offsetting is larger than 20% and cause complicated seismic response. This paper takes an eccentric high-rise frame-shear wall structure of single tower as example, analyze the inelastic performance of this structure under rare earthquake by Pushover method, and point out the weak parts of the position by the distribution and development of plastic hinges.Draw the structure inelastic response indicators in the rare case of earthquakes, and point out the weak parts of the structure of the distribution and development of plastic hinge (region), put forward reasonable proposals for optimizing the structure design.

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