Impact of opening ratio on seismic performance of light-gauge steel structure

2021 ◽  
Author(s):  
Xinzhi Zheng ◽  
Yuanhong Zhang ◽  
Shuang Zheng
Keyword(s):  
Seismic Performance ◽  
Steel Structure ◽  
Opening Ratio

Experimental Study on Seismic Performance of Ridge Joint of Double C Steel under Cyclic Loading

2011 ◽  
Vol 243-249 ◽  
pp. 1435-1438 ◽  
Author(s):  
Ming Chen ◽  
Yang Sun ◽  
Bing Qian Pi
Keyword(s):  
Experimental Study ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Engineering Application ◽  
Steel Structure ◽  
Energy Performance ◽  
Gusset Plate ◽  
Cold Formed Steel ◽  
Bolt Spacing ◽  
Steel Section

The double C steel section is made of two C steels with gusset plate through bolts. A ridge joint of double C steel is studied through experiment under cyclic loading in this paper. Through the four specimens with different gusset-plate’s thickness and bolt spacing, we analyze the effect of the gusset-plate’s thickness and bolt spacing on stiffness, ductility and energy performance. At last we recommend the suitable gusset-plate’s thickness. The results can give a reference to the engineering application of cold-formed steel structure.

Influence of member geometric imperfection on geometrically nonlinear buckling and seismic performance of suspen-dome structures

2014 ◽  
Vol 14 (03) ◽  
pp. 1350070 ◽  
Author(s):  
Z. Zhou ◽  
J. Wu ◽  
S. Meng
Keyword(s):  
Critical Load ◽  
Seismic Performance ◽  
Seismic Analysis ◽  
Great Influence ◽  
Steel Structure ◽  
Analysis Method ◽  
Initial State ◽  
Nonlinear Buckling ◽  
Finite Element Program ◽  
Geometric Imperfection

This paper focuses on the effect of member geometric imperfection on nonlinear geometrically buckling and seismic performance of a new style of space steel structure, suspen-dome, which is composed of a reticulated shell and cable-strut system. By supposing the initial curvature of members as half-wave sinusoids, a stiffness equation of imperfect truss elements is derived for the struts, while that of imperfect beam elements is derived for the reticulated shell members. The proposed imperfect elements are implanted into ANSYS finite element program. Three numerical examples are employed to validate the proposed imperfect elements and analysis method. An ellipsoidal suspen-dome of Changzhou gymnasium is taken as an example. The results show that the imperfection value has relatively great influence on the structural stiffness. With the increase of member imperfection, the critical load decreases in a basically linear way. Under different prestress states, the relation curves between the critical load and imperfection are basically parallel. The nonlinear seismic analysis results show that when imperfection is included, the initial state responses are different, namely, the seismic displacement increases while the stress in rods and cables decreases. The proposed imperfection analysis method can be widely used in not only suspen-dome structures, but also other kinds of prestressed space grid structures. In this way, the influence of member imperfection on structural buckling and seismic performance can be estimated.

scholarly journals Coupling Ratio-Based Design and Seismic Performance of Modular Prefabricated Hybrid Coupled Walls

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Yun Shi ◽  
Yumin Zhang ◽  
Jianbo Dai ◽  
Guangyuan Weng
Keyword(s):  
Finite Element ◽  
Seismic Performance ◽  
Seismic Design ◽  
Structural Damage ◽  
Design Procedure ◽  
Steel Structure ◽  
Design Stage ◽  
Lateral Stiffness ◽  
Coupling Ratio ◽  
Element Analysis

Based on the advantages of modular prefabricated multistory steel structure, a full-bolt-connected modular steel coupling beam-hybrid coupled wall system is presented. Further, a method of estimating the coupling ratio (CR) is proposed according to the continuous link method. A CR-based seismic design procedure is determined such that the structure utilizes the lateral stiffness of the shear wall, which is necessary to avoid structural damage under frequently occurring earthquakes. However, it also exhibits excellent ductility of the coupling beams, which is necessary for dissipating energy under infrequent earthquakes. Subsequently, nonlinear hysteretic analyses are conducted from finite element analysis software ABAQUS, and a parametric study based on the finite element technique is performed to identify the optimal value of the coupling ratio. Results indicate that the seismic performance of modular prefabricated HCWs was excellent, and the basic requirements for ductile behavior and lateral stiffness were satisfied for CR values from 50% to 60%. The obtained results confirm the accuracy of the CR-based seismic design method proposed in this study and are supported by the selection of the design parameter at the initial design stage.

Seismic Performance of a Single-Story Articulated Steel Structure System

2020 ◽  
Vol 146 (10) ◽  
pp. 04020108
Author(s):  
Ping Xiang ◽  
Ruihong Xie ◽  
Zhuofeng Li ◽  
Liang-jiu Jia ◽  
Jiangyue Xie
Keyword(s):  
Seismic Performance ◽  
Steel Structure ◽  
Structure System

Shaking table test of reinforced concrete coupled shear walls with single layer of web reinforcement and inclined steel bars

2018 ◽  
Vol 21 (15) ◽  
pp. 2282-2298 ◽  
Author(s):  
Jianwei Zhang ◽  
Wenbin Zheng ◽  
Cheng Yu ◽  
Wanlin Cao
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Shaking Table Test ◽  
Single Layer ◽  
Shear Walls ◽  
Shaking Table ◽  
Large Hole ◽  
Steel Bars ◽  
Web Reinforcement ◽  
Opening Ratio

In this study, five 1/4 scaled shaking table tests were conducted to investigate the seismic performance of reinforced concrete coupled shear walls with single layer of web reinforcement and inclined steel bars. The five tested coupled shear walls included three models with normal opening ratio (19%) and two models with large hole ratio (27%). The three models with normal opening included one model with single layer of web reinforcement, two models with single layer of web reinforcement and 75° inclined steel bars in the limbs’ web or at the bottom. Two reinforced concrete coupled shear walls with large hole and single row of reinforcements also were tested with inclined reinforcements or without them. The dynamic characteristics, dynamic response, and failure mode of each model were compared and analyzed. The test and analysis results demonstrate that the inclined steel bars are identified as an efficient means of limiting overall deformation, increasing energy dissipation, and reducing the possible damage by earthquake for reinforced concrete coupled shear walls with single layer of web reinforcement. Thus, reinforced concrete coupled shear walls with inclined steel bars have better seismic performance than reinforced concrete coupled shear walls without inclined steel bars. With appropriate design, reinforced concrete coupled shear walls with single layer of web reinforcement and inclined steel bars can be applied in multi-story buildings.

scholarly journals Study on the Seismic Performance of Box-Plate Steel Structure with Openings Modular Unit

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4142 ◽  
Author(s):  
Jinjie Men ◽  
Guanlei Fan ◽  
Tao Lan ◽  
Jiachen Wang ◽  
Liquan Xiong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Seismic Performance ◽  
Steel Structure ◽  
Lateral Force ◽  
Plate Steel ◽  
Element Analysis ◽  
Plate Structure ◽  
Modular Unit ◽  
Practical Engineering

The box-plate steel structure residence is a box structure with stiffened steel plates directly used as load-bearing walls and floors. In practical engineering, due to the functional requirements of the building, it is necessary to open door or window openings on the box-plate steel structure walls. To study the seismic performance of the box-plate steel structure with openings system, two three-story single-compartment box-plate steel structures with openings modular units were designed and fabricated according to the 1:3 reduced scale. Through the quasi-static loading test, numerical simulation, and theoretical analysis, the failure process, failure mode, lateral force resistant capacity, and hysteresis performance of the specimens were studied. The impact of the different opening areas and opening position on the seismic performance of the box-plate steel structure was emphatically analyzed. The results of the test indicated that the openings on the steel wall plate would reduce the initial stiffness and the lateral force resistant capacity of the specimen; the destruction of the box-plate steel structure with openings modular unit under the low cyclic loading effect started with the tear in the corner of the openings and ended with the tear in the corner steel wall plate. Then, the finite element analysis (FEA) models were developed to supplement the experimental study, and the comparisons were made between measured and simulated results on load versus displacement relationships and failure modes. On the basis of the stressing mechanism of the box-plate structure modular unit, the calculation equation of the lateral force resistant capacity of the box-plate structure with openings modular unit was put forward. Then, the proved finite element analysis (FEA) models were used for parameter analysis of different influence parameters to verify the proposed calculation equation. The results showed that the proposed calculation equation had high accuracy and could be used as a design basis for practical engineering.

Study on Cold-Formed Steel of Thin-Walled Housing for Dynamic Performance

2011 ◽  
Vol 250-253 ◽  
pp. 3305-3308
Author(s):  
Yong Yao ◽  
Yun Peng Chu ◽  
Li Wang ◽  
Rui Zhao
Keyword(s):  
Seismic Performance ◽  
Seismic Waves ◽  
Lateral Displacement ◽  
Dynamic Performance ◽  
Time History ◽  
Steel Structure ◽  
Seismic Intensity ◽  
Finite Element Software ◽  
Cold Formed Steel ◽  
Rare Earthquake

Cold-formed steel structure is suitable for post-earthquake reconstruction since its good seismic performance and construction speed. Analyzing the dynamic characteristic of a two story office building by using the finite element software ANSYS. And the results show that: (1) in the time history analysis based on three types of seismic waves the lateral displacement of the structure and rotation between layers to meet the relevant specifications when confront the rare earthquake (2) Under the seismic loads, earthquake response acceleration amplification factor is smaller which indicating better seismic performance and it can be used in areas with high seismic intensity.

Performance Evaluation of Buckling-Restrained Braces Installed in a Mid-Rise Steel Structure

2018 ◽  
Vol 763 ◽  
pp. 884-891
Author(s):  
Ryohei Narui ◽  
Kazuhisa Koyano ◽  
Mitsumasa Midorikawa ◽  
Tadao Nakagomi ◽  
Mamoru Iwata
Keyword(s):  
Plastic Strain ◽  
Seismic Performance ◽  
Strain Energy ◽  
High Performance ◽  
Steel Structure ◽  
Basic Type ◽  
Building Structure ◽  
Plastic Strain Energy ◽  
Cumulative Plastic Strain ◽  
Strain Energy Ratio

The authors have continuously studied buckling-restrained braces using steel mortar planks (BRBSM). The performance of energy absorption and fatigue against cyclic loading has been evaluated. Although past studies have clarified the structural performance of BRBSM as single member, it is necessary to study not only the performance of BRBSM as single member but also the performance of BRBSM installed in a building structure. In this paper, a frame model of mid-rise steel structure with BRBSM subjected to earthquake motions with various characteristics is analyzed. Comparing the results of the analysis and the past tests, the seismic behavior of a structure is discussed. Especially, the seismic performance of BRBSM installed in the building structure is evaluated. In addition, the seismic performance of two types of BRBSM; basic and developed high-performance types, is compared and evaluated about cumulative plastic strain energy ratio and cumulative fatigue. As a result, the performance capacities of the both types of BRBSM exceed the required values of BRBSM under severe earthquake motions about cumulative plastic strain energy ratio and cumulative fatigue. The basic-type BRBSM has the fatigue capacity against 2 to 5 times severe earthquake motions. The required values of high-performance-type BRBSM are about a half of accumulated fatigue capacity compared with the basic-type one. The high-performance-type BRBSM is applicable against quite many cyclic loadings of low strain amplitude, and able to be used for long-term service.

Comparative Study on the Design Schemes of Residential Steel Structure

2012 ◽  
Vol 238 ◽  
pp. 581-584
Author(s):  
Yong Chun Xu ◽  
Zhong Ping Tang
Keyword(s):  
Comparative Study ◽  
Seismic Performance ◽  
Residential Building ◽  
Steel Structure ◽  
Steel Tube ◽  
Tube System ◽  
Interior Decoration ◽  
Steel Consumption ◽  
Square Steel Tube ◽  
Model Graph

This paper choses a duplex apartment which is six floors steel structure as the research object, on the ground of the same building size, with the same beam & tie rod, and the same material for the floor ground & wall plate, two structure system schemes are designed respectively using the H sections and square steel tube as the form of pillar section. The calculate model are made respectively applying the FEA software. From the model graph, natural frequency, economic and technology and other index, the following conclusions are given out comparing the two schemes: the multi floor residential building of light steel structure with square steel tube and H sections is feasible in seismic performance, the steel consumption of the square steel tube system is lower than the H sections system. The square steel tube system is superior to the H sections system in interior decoration and utilizing construction area.

scholarly journals Seismic Performance of Enclosure Wall in Postearthquake Temporary Prefabricated Light-Weight Steel Structure

2019 ◽  
Vol 2019 ◽  
pp. 1-17
Author(s):  
Guoqi Xing ◽  
Qing-hai Li ◽  
Jingjie Yu ◽  
Wei Xuan
Keyword(s):  
Experimental Model ◽  
Natural Frequency ◽  
Seismic Performance ◽  
Steel Structure ◽  
Seismic Signal ◽  
Steel Frame ◽  
Shake Table ◽  
Light Weight ◽  
Maximum Acceleration ◽  
Enclosure Wall

For the postearthquake temporary prefabricated light-weight steel structure, the enclosure walls composed of prefabricated slender columns and prefabricated strip slabs were used in the structure, which were manufactured from construction waste, such as fragments of bricks and tiles, concrete fragments, and chippings of stones. In order to obtain more accurate seismic performance of enclosure walls, a full-scale two-story experimental model was built to be placed on a shake table. In the test, acceleration transducers were fixed to the enclosure walls and steel frame, which were used to obtain the maximum acceleration of the enclosure walls and steel frame as well as natural frequency of the experimental model subjected to the seismic signal including Kobe wave and El-Centro wave. Moreover, pull-on the rope displacement transducers fixed to the exterior walls parallel to the direction of vibration were used to obtain the story drifts. The results of the shake table test show that when the experimental model is subjected to earthquake with maximum acceleration, enclosure walls are not damaged, owing to flexible connection between the steel frame and enclosure walls. Earthquake reduces the stiffness of enclosure walls, and the natural frequency of the experimental model decreases with increasing maximum acceleration of the seismic signal. In addition, based on the acceleration amplification coefficient, the collaborative performance of the steel frame and enclosure wall is better. Besides, when the experimental model is subjected to earthquake with maximum acceleration, the maximum story drift angle is only 1/2615.

Sign in / Sign up

Export Citation Format

Share Document