Research on Shaking Table Test of Masonry Building with Rowlock Cavity Walls

2011 ◽  
Vol 250-253 ◽  
pp. 1196-1205
Author(s):  
Zhong Fan Chen ◽  
Fei Lu ◽  
Yang Yuan ◽  
Sha Sha Miao
Keyword(s):  
Seismic Performance ◽  
Structural Parameters ◽  
Research Result ◽  
Load Condition ◽  
Shaking Table ◽  
Cavity Wall ◽  
Wall Structure ◽  
Masonry Building ◽  
Model Structure ◽  
Seismic Capacity

Rowlock cavity wall was widely used in rural house in Southern Jiangsu Province from 1980s to 1990s. As one type of masonry structures, the seismic performance of rowlock cavity wall has rarely been studied on. Based on the report of General Seismic Investigation in Jiangsu Qidong, one 1/2-scale rowlock cavity wall structure was modeled as the existing rural house, and was tested on shaking table in lab of Southeast University. After analyzing the failure state of the model, and examining the structural parameters such as natural frequency, damping ratio, floor acceleration, floor shift, strain and crack of the model in load condition of different earthquake wave and intensity, the seismic performance of rowlock wall structure was assessed. And the seismic capacity of the whole model and each piece of rowlock wall was also analyzed. Based on the mortar strength field inspected in model wall, the seismic capacity of model structure under the action of rarely occurred earthquake of level 6 seismic precautionary intensity was estimated. The result showed that the model structure would collapse under the load condition. Obviously, this can not satisfy the seismic precautionary requirement in Code for Seismic Design of Buildings (GB50011-2001). Therefore, some principal reinforcement suggestions were discussed and proposed for existing rowlock cavity wall buildings. The research result of this paper could provide some theoretical foundation for the Aseismic Residential Project of rural peasant house, and also could be referred to for further research on rowlock cavity wall structures.

Study on Rational Ratios of Lateral Stiffness for Masonry Building with Frame Structure at First Two Stories

2012 ◽  
Vol 174-177 ◽  
pp. 2012-2015
Author(s):  
Xiao Long Zhou ◽  
Ying Min Li ◽  
Lin Bo Song ◽  
Qian Tan
Keyword(s):  
Seismic Performance ◽  
Time History ◽  
Shear Wall ◽  
Calculation Model ◽  
Frame Structure ◽  
Wall Structure ◽  
Masonry Building ◽  
Lateral Stiffness ◽  
Stiffness Ratio ◽  
Lateral Stiffness Ratio

There are two typical seismic damage characteristics to the masonry building with frame shear wall structure at first two stories, and the lateral stiffness ratio of the third storey to the second storey is one of the key factors mostly affecting the seismic performance of this kind of building. However, some factors are not considered sufficiently in current Chinese seismic codes. According to the theory of performance-based seismic design, the seismic performance of this kind of structure is analyzed in this paper by taking time-history analysis on models which with different storey stiffness ratios. The results show that when the lateral stiffness ratio controlled in a reasonable range, the upper masonry deformation can be ensured in a range of elastic roughly, and the bottom frame can be guaranteed to have sufficient deformation and energy dissipation capacity. Finally, according to the seismic performance characteristics of masonry building with frame shear wall structure at first two stories, especially the characteristics under strong earthquakes, a method of simplified calculation model for the upper masonry is discussed in this paper.

Shaking Table Test Study of Reinforced Concrete Shear Wall Structure

2017 ◽  
Vol 865 ◽  
pp. 306-312
Author(s):  
Zheng Li ◽  
Heng Zhou ◽  
Li Qin
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Shaking Table Test ◽  
Time History ◽  
Shear Wall ◽  
Shaking Table ◽  
Wall Structure ◽  
Model Structure ◽  
Fixed Base ◽  
Time History Response

A reduced-scale model of 7-story reinforced concrete shear wall structure is made. Shaking-table test of the model is carried out. Two test conditions are considered. In the first condition, fixed base is used. In another condition, soil structure interaction is considered. According to the experimental results, the dynamic characteristic and seismic performance of shear wall structure is studied. The acceleration time history response of model structure is obtained. Based on the time-history response, the dynamic characteristics of model structure are studied by spectrum analysis. The Finite Element Model of actural structure is established by ANSYS. The dynamic characteristics and seismic performance of actural structure are studied. By comparing the experiment results and numerical analysis results under the fixed-base condition, the rationality of the ANSYS model and numerical analysis method of are verified.

scholarly journals Shaking Table Model Test and Seismic Performance Analysis of a High-Rise RC Shear Wall Structure

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Shujin Li ◽  
Cai Wu ◽  
Fan Kong
Keyword(s):  
Seismic Performance ◽  
Model Test ◽  
Shaking Table Test ◽  
Technical Specification ◽  
Shaking Table ◽  
Scale Model ◽  
Wall Structure ◽  
High Rise ◽  
Table Model ◽  
Shaking Table Model Test

A building developed by Wuhan Shimao Group in Wuhan, China, is a high-rise residence with 56 stories near the Yangtze River. The building is a reinforced concrete structure, featuring with a nonregular T-type plane and a height 179.6 m, which is out of the restrictions specified by the China Technical Specification for Concrete Structures of Tall Building (JGJ3-2010). To investigate its seismic performance, a shaking table test with a 1/30 scale model is carried out in Structural Laboratory in Wuhan University of Technology. The dynamic characteristics and the responses of the model subject to different seismic intensities are investigated via the analyzing of shaking table test data and the observed cracking pattern of the scaled model. Finite element analysis of the shaking table model is also established, and the results are coincident well with the test. An autoregressive method is also presented to identify the damage of the structure after suffering from different waves, and the results coincide well with the test and numerical simulation. The shaking table model test, numerical analysis, and damage identification prove that this building is well designed and can be safely put into use. Suggestions and measures to improve the seismic performance of structures are also presented.

Seismic Performance Evaluation of Village Buildings in Wenzhou

2012 ◽  
Vol 166-169 ◽  
pp. 2522-2527
Author(s):  
Ke Jia Yang ◽  
Wei Li ◽  
Jian Wei Yin
Keyword(s):  
Seismic Performance ◽  
Cavity Wall ◽  
Economic Losses ◽  
Wall Structure ◽  
Severe Damage ◽  
Typical Structure ◽  
Seismic Performance Evaluation ◽  
Wall Structures ◽  
Prototype Structure ◽  
Earthquake Load

Earthquakes cause severe damage to structures and economic losses recently, based on which investigations are carried out on village buildings in Wenzou. Investigation results show that cavity wall structures are the most widely used by village buildings. So a typical cavity wall structure is selected for analyses in this paper. The typical structure is simulated using Sap2000. The structure was analyzed with and without structural columns and ring beams. Analyses results show that the prototype structure is inadequate to resist earthquake load. Structural columns and ring beams can enhance its seismic performance and provide it adequate seismic performance. So it is necessary to enhance village structures with structural measures.

scholarly journals Seismic Performance and Strengthening of Purlin Roof Structures Using a Novel Damping-Limit Device

2021 ◽  
Vol 8 ◽  
Author(s):  
Baokui Chen ◽  
Bao Jia ◽  
Ming Wen ◽  
Xiaodong Li
Keyword(s):  
Seismic Performance ◽  
Rural Areas ◽  
Structural Parameters ◽  
Local Stress ◽  
The Novel ◽  
Reinforcement Effect ◽  
Seismic Capacity ◽  
Novel Device ◽  
Roof Structure ◽  
Strengthening Method

Purlin roof structure houses, which have the advantages of readily accessible materials and simple construction, are widely used in rural areas of China. However, during earthquakes, the wooden purlins tend to fall off and the walls crack. Therefore, it is necessary to monitor the structural parameters of and strengthen the anti-seismic capacity of these structures. To compensate for the seismic deficiencies of the purlin roof structure, a novel damping-limit device installed at the connection position of the gable and the wooden purlin was proposed. In this study, the seismic performance and reinforcement effect of the brick-wood structure with the purlin roof were analyzed through numerical simulation. The research results indicate that the novel damping-limit device proposed in this study can significantly reduce the local stress concentration and the seismic response of the structure, and thereby rectifying the seismic defect of falling purlin. Moreover, compared with the traditional strengthening method, the novel device is more convenient to install and the reinforcement quality is easier to ensure.

Recent Study on Seismic Performance and Response Control of Tall Buildings

2012 ◽  
Author(s):  
Xilin Lu ◽  
Huanjun Jiang
Keyword(s):  
Seismic Performance ◽  
Mainland China ◽  
Tall Buildings ◽  
Shaking Table ◽  
Wall Structure ◽  
Coupling Beams ◽  
Response Control ◽  
Rapid Economic Growth ◽  
Table Model ◽  
Performance Based Seismic Design

<p>As a result of rapid economic growth and urbanization, a huge amount of tall buildings have been constructed in Mainland China in the recent two decades. Tall buildings are the symbols of our industrialized societies and provide us more living and working spaces in the limited land. They have become one of the most important infrastructures in the renewal of our urban environment as well as the creation of new urban area throughout the world. However, tall buildings suffered serious damages during the past earthquakes. Some research and practice work of seismic performance and response control of tall buildings in Mainland China in recent years are introduced here, including the general methodologies for performance-based seismic design of tall buildings, shaking table model tests on complex tall buildings to evaluate the seismic performance of structures and accordingly revise the structural design, and a new type of earthquake resilient shear wall structure with replaceable coupling beams and replaceable foot parts.</p>

Discussion on the Seismic Design Analysis Method of Masonry Building

2010 ◽  
Vol 163-167 ◽  
pp. 3952-3957
Author(s):  
Xiao Song Ren ◽  
Yu Fei Tao
Keyword(s):  
Shear Strength ◽  
Seismic Performance ◽  
Seismic Design ◽  
Design Analysis ◽  
Masonry Building ◽  
Analysis Method ◽  
Seismic Capacity ◽  
Major Earthquake ◽  
Moderate Earthquake ◽  
Seismic Design Code

The main seismic objective in China is defined as “no failure under minor earthquake, repairable damage under moderate earthquake and no collapse under major earthquake”. Both strength and deformation are important to evaluate the seismic performance. For masonry building, only the shear strength check under minor earthquake is stipulated in the current Chinese seismic design code. Due to the poor ductility of masonry building, the seismic design analysis method may not guarantee the collapse-resistant capacity under major earthquake. For the achievement of the seismic objective, the demand of ductility is discussed. A typical severely damaged masonry building by the 5.12 Wenchuan Earthquake of 2008 is presented for the analysis of the through X-shape crack on the load-bearing wall. In order to enhance the collapse-resistant capacity, the authors suggest more shear strength margin to take the influence of structural ductility into consideration. The feasible way can be easily realized as a target to raise the limitation for the shear strength check parameter under minor earthquake and to keep uniform seismic capacity in two directions. The investigated building is also illustrated here as an example to process the shear strength check for better seismic performance by the authors’ suggestion.

Research on the Seismic Performance of Construction Waste Recycled Brick Masonry Structure

2012 ◽  
Vol 588-589 ◽  
pp. 1950-1954
Author(s):  
Hui Su ◽  
Guo Song Han ◽  
Xin Pei Jiang
Keyword(s):  
Seismic Performance ◽  
Building Material ◽  
Masonry Structure ◽  
Shaking Table ◽  
Masonry Building ◽  
Test Results ◽  
Acceleration Response ◽  
Construction Waste ◽  
Building Model ◽  
Seismic Property

In order to research the seismic property of masonry building constructed with the construction waste recycled bricks, a four stories building model with 1:3 scale is constructed and tested on the shaking table. Based on the test results, the cracks pattern, displacement response, acceleration response of the building are studied. The failure mechanism of the infill building is investigated. The results show that the construction waste recycled brick is a qualified building material to construct the low rise building.

Shaking Table Test of Eccentric Reinforced Concrete Frame-Shear Wall Structure Model

2014 ◽  
Vol 584-586 ◽  
pp. 1247-1250
Author(s):  
Bing Li ◽  
Li Na Lu ◽  
Hai Tao Lv ◽  
Xu Fang Li
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Shaking Table Test ◽  
Shear Wall ◽  
Simulation Software ◽  
Shaking Table ◽  
Wall Structure ◽  
Reinforced Concrete Frame ◽  
Element Analysis ◽  
High Rise

Reinforced concrete eccentric frame-shear wall structure has been widely used in engineering. However, this structure is mainly used for high-rise structure, and it is difficult to obtain accurate earthquake response of structure through experimental study. Therefore, simulation software needs to be used for study on seismic performance of high-rise structures. This paper produces useful conclusions for the project through shaking table test and the simulation of seismic performance provided by ANSYS finite element analysis software.

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