scholarly journals Testing and numerical analysis on cold-formed steel shear walls using corrugated steel sheathing

2017 ◽  
Author(s):  
Wenying Zhang ◽  
Yuanqi Li ◽  
Cheng Yu
Keyword(s):  
Parametric Analysis ◽  
Shear Walls ◽  
Shear Stiffness ◽  
Element Model ◽  
Shear Wall ◽  
High Shear ◽  
Test Results ◽  
Steel Sheets ◽  
Cold Formed Steel ◽  
Vertical Gravity

Cold-formed steel framed shear wall sheathed with corrugated steel sheets is a promising shear wall system for low- and mid-rise constructions at high wind and seismic zones due to its advantages of non-combustibility, high shear strength, and high shear stiffness. Monotonic and cyclic tests on full-scale wall assemblies using corrugated steel sheathing was conducted. To investigate the effect of vertical/gravity loading, shear wall specimens were tested under two different loading conditions: lateral loading, and a combined lateral and vertical/gravity loading. The test results are presented and discussed in this paper. Besides, finite element model of the proposed shear wall was created in Abaqus software. The validity of the numerical model was verified based on the test results. A series of parametric analysis were conducted, including the thickness of framing members, the cross section of stud members, yield strength of the frame members, stud spacing, and the influence of gravity loads. The detailed modeling information, relevant parametric analysis and recommendations for practical application of this type of shear resisting system are also presented.

scholarly journals Axial and Bending Bearing Capacity of Double-Steel-Concrete Composite Shear Walls

2020 ◽  
Vol 10 (14) ◽  
pp. 4935
Author(s):  
Peiyao Zhang ◽  
Quanquan Guo ◽  
Fei Ke ◽  
Weiyi Zhao ◽  
Yinghua Ye
Keyword(s):  
Bearing Capacity ◽  
Design Method ◽  
Shear Walls ◽  
Element Model ◽  
Shear Wall ◽  
Test Results ◽  
Nuclear Facilities ◽  
Bending Performance ◽  
Composite Shear Wall ◽  
Composite Shear

Double steel-concrete composite shear wall is a novel composite structure. Due to its good mechanical properties, it has been considered as a substitute for reinforced concrete walls in nuclear facilities, marine environmental structures, and high-rise buildings. However, the design method of the double-steel concrete composite shear wall is lacking. The purpose of this paper is to propose the bending capacity formula under large and small eccentric loads. By summarizing the test results of 49 steel-concrete composite double shear walls under cyclic loading from different studies, it was found that the bending failure of double-steel-concrete composite shear walls was featured by the concrete crushing at the bottom. A finite element model was established and it could simulate the axial and bending performance of double steel-concrete composite shear walls reasonably well. According to the experimental results and FE analysis, the primary assumptions for calculating the axial and bending bearing capacity of the double steel-concrete composite shear walls were proposed. Based on these assumptions, the bearing capacity formulas were derived according to the equilibrium theory of the cross section. The calculation results obtained by the bearing capacity formulas were in good agreement with the test results.

scholarly journals Investigation on the Design Method of Shear Strength and Lateral Stiffness of the Cold-Formed Steel Shear Wall

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Shaofeng Nie ◽  
Tianhua Zhou ◽  
Yang Zhang ◽  
Ben Zhang ◽  
Shuo Wang
Keyword(s):  
Shear Strength ◽  
Design Method ◽  
Residential Buildings ◽  
Shear Walls ◽  
Shear Wall ◽  
Design Methods ◽  
Lateral Stiffness ◽  
Test Results ◽  
Gypsum Board ◽  
Cold Formed Steel

The assembled cold-formed steel stud shear walls are the main lateral force resisting members of cold-formed steel residential buildings. In this paper, three cold-formed steel shear walls with different types of sheathings (gypsum board and OSB board) were tested under the monotonic lateral loading. The failure modes, the shear strength, and the load-displacement curves of the shear walls were obtained and analyzed to investigate the relationship between screws and shear walls. The test results showed that the material types of the sheathings influence the shear strength of the CFS shear wall greatly. The sum of shear strengths of CFS shear walls with one-side gypsum board and CFS shear walls with one-side OSB board is close to that of the CFS shear wall with the both-sided board (one side is gypsum board and the other side is OSB board). The shear strength of the screws between the board and the CFS stud plays a decisive role in the shear strength of the CFS shear wall, which is usually governed by the shear strength of the screw connections. The design methods of the shear strength and the lateral stiffness of the CFS shear walls were proposed and evaluated by comparing the calculated results with the test results. The comparison results demonstrated that the modified design method of shear strength is conservative and feasible to predict the shear strength of the CFS shear wall. The design method of the lateral stiffness of the CFS shear wall is available to calculate the lateral displacement of the CFS shear wall under the elastic stage, but it is not useful under the nonelastic stage. The proposed design methods can be served as a reference for engineering practice.

Experimental Study on Shear Behavior of Perfobond Connector with Boot Shaped Slots

2019 ◽  
Author(s):  
Zhanchong Shi ◽  
Qingtian Su ◽  
Xinyi He ◽  
Quanlu Wang ◽  
Kege Zhou ◽  
...  
Keyword(s):  
Failure Modes ◽  
Shear Stiffness ◽  
Shear Capacity ◽  
High Shear ◽  
Test Results ◽  
Precise Location ◽  
Construction Problem ◽  
Circular Holes ◽  
New Type ◽  
Push Out

<p>In order to solve the construction problem of perforating rebars’ precise location and it’s getting through the circular holes for the the conventional perfobond connector, a new type of perfobond connector with boot shaped slots was proposed. This new type perfobond connector has the advantage of convenient construction and pricise location. Three groups of push-out tests with nine specimens were carried out to study the shear capacity of the new type perfobond connector. The effect of the number and the spacing of boot shaped slots on failure modes, shear capacity, peak slip and shear stiffness were mainly studied. The test results show that the new type of perfobond connector with boot shaped slots has a high shear capacity and a good ductility, it could be widely applied on the connection between the steel and the concrete structures.</p>

scholarly journals Improved Fastener-Based Modelling Method for Reinforced Cold-Formed Steel Shear Walls

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Xingxing Wang ◽  
Youcheng Li ◽  
Wei Wang ◽  
Shangxin Gao
Keyword(s):  
Numerical Models ◽  
Elastic Beam ◽  
Shear Walls ◽  
Test Results ◽  
Modelling Method ◽  
Shear Performance ◽  
Cold Formed Steel ◽  
Hysteretic Characteristics ◽  
Relative Errors ◽  
Equivalent Method

The fastener-based computational model is improved and extended to predict the shear performance of reinforced cold-formed steel (RCFS) shear walls. The failure mechanism of sheathing-to-stud connections with double-layer wallboards is first analysed, and a method for determining those connections’ shear properties is proposed. Numerical models of RCFS shear walls are then established and analysed. Based on simulated results that have been fully validated by previous test results, an equivalent method for perforated RCFS shear walls is proposed. Finally, the application of the improved fastener-based modelling method to mid-rise RCFS shear walls is verified. The following results were obtained. (1) The simulated load-displacement curves can fully reflect shear wall hysteretic characteristics; moreover, the relative errors between the simulated and test results are within 14.2%. (2) The equivalent method that simplifies the wall segment over an opening as a linear elastic beam is applicable in the case of 1.5 < b/d (i.e., the ratio of the opening width to the depth of the wall segment over the opening) ≤5.0. (3) The improved fastener-based modelling method can be used to effectively predict the lateral performance of mid-rise RCFS shear walls.

scholarly journals Connection of infill panels in steel plate shear walls

1999 ◽  
Vol 26 (5) ◽  
pp. 549-563 ◽  
Author(s):  
A Schumacher ◽  
G Y Grondin ◽  
G L Kulak
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Steel Plate ◽  
Shear Walls ◽  
Element Model ◽  
Shear Wall ◽  
Experimental Program ◽  
Steel Plate Shear Wall ◽  
Infill Panels ◽  
Welded Connection

The behaviour under cyclic loading of unstiffened steel plate shear wall panels at their connection to the bounding beams and columns was investigated on full-size panel corner details. Four different infill panel connection details were tested to examine and compare their response to quasi-static cyclic loading. The load versus displacement response of the details showed gradual and stable deterioration at higher loads. The formation of tears in the connection details did not result in a loss of load-carrying capacity. In addition to the experimental program, a finite element model was developed to model the behaviour of one of the infill plate corner connection specimens. Results from the analysis showed that the finite element method can be used to obtain the load versus displacement behaviour of an infill panel-to-boundary member arrangement.Key words: cyclic loading, hysteresis, shear wall, steel, welded connection.

Seismic Performance of Precast Concrete Composite Shear Walls with Multiple Boundary Elements

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940006
Author(s):  
W. C. Xue ◽  
Y. Li ◽  
L. Cai ◽  
X. Hu
Keyword(s):  
Precast Concrete ◽  
Shear Walls ◽  
Boundary Elements ◽  
Shear Wall ◽  
Control Specimen ◽  
Test Results ◽  
Out Of Plane ◽  
Loading Tests ◽  
Composite Shear ◽  
Scale Shear

Compared with traditional precast concrete composite shear walls (PCCSWs) with two boundary elements adjacent to edges, the PCCSWs with multiple boundary elements investigated in this paper have extra boundary elements at the intersections with other shear walls. In this paper, low reversed cyclic loading tests were conducted on three full-scale shear wall specimens with multiple boundary elements under in-plane loading and two full-scale shear wall specimens under out-of-plane loading. The in-plane loaded specimens included a PCCSW with double precast layers (i.e. precast concrete double skin shear wall, PCDSSW), a PCCSW with single precast layer, and a cast-in-pace (CIP) control specimen, whereas the out-of-plane loaded specimens included a PCDSSW and a CIP control specimen. Test results revealed that all specimens failed in bending. The hysteresis loops of the precast composite specimens were stable but slightly pinching, which were similar to those of the corresponding CIP control specimen. Compared with the CIP specimens, the PCDSSWs showed similar energy dissipation. The loading capacity of the precast composite specimens was generally a little lower than that of the corresponding CIP specimen with difference not more than 15%. In the in-plane loading tests, the PCDSSW reached higher displacement ductility (2.45) than the CIP specimen (1.88), whereas the ductility of the PCCSW with single precast layer was relatively low. Regarding the specimens under out-of-plane loading, the ductility of the PCDSSW (3.83) was close to that of the CIP specimen (3.02). Moreover, the stiffness degradation of the precast composite specimens was found to be comparable to that of the control specimens. Based on the test results, a restoring force model was developed.

scholarly journals Performance of low rise concealed truss composite shear walls with external columns

2018 ◽  
Vol 38 (2) ◽  
pp. 131-142
Author(s):  
Dan Zhang ◽  
Zhong Tao ◽  
Lei Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Experimental Studies ◽  
Shear Walls ◽  
Element Model ◽  
Monotonic Loading ◽  
Test Results ◽  
Flat Steel ◽  
Composite Shear ◽  
Constant Axial Load

A review on the previous studies shows that limited analytical or experimental studies on the low-rise concealed truss shear walls with external columns under monotonic loading have already been conducted. The combination of concealed truss was welded to I-shaped steel frame and flat steel support. Two different aspect ratio composite shear walls were tested under static monotonic loading, and the failure mode, bearing capacity, ductility and stiffness were explored. A finite element model was developed and used to simulate the composite shear walls under constant axial load and lateral loading. The comparison of test results confirmed that the finite element model could predict the behavior of composite shear walls accurately. Meanwhile, stress analyses of the specimens were studied to simulate stress distribution of reinforcement, and to analyze the steel of composite shear wall with external columns at different loading stages. Taken together, this study could be a basis for developing an accurately simplified model.

Calculation on the Vertical Cracking Load of Adaptive-Slit Shear Walls

2012 ◽  
Vol 166-169 ◽  
pp. 2924-2928
Author(s):  
Ming Jin Chu ◽  
Yufeng Zhang ◽  
Zhi Juan Sun
Keyword(s):  
Seismic Behavior ◽  
Steel Sheet ◽  
Mechanical Characteristics ◽  
Experimental Studies ◽  
Shear Walls ◽  
Shear Wall ◽  
Experimental Results ◽  
Loading Process ◽  
Cold Formed Steel ◽  
Good Agreement

Experimental studies showed that vertical cracks appeared along the cold-formed steel or the steel sheet on the adaptive-slit shear walls when the wall was subjected to horizontal earthquake loading, and the adaptive-slit shear wall experienced the loading process from the whole wall section to the slitted wall section. So the appearance and development of the vertical cracks can reflect the seismic behavior of adaptive-slit shear walls. According to the mechanical characteristics of the adaptive-slit shear walls, this paper proposed a method to calculate the cracking load. It is found that the calculated results has a good agreement with the experimental results.

Nonlinear Finite Element Analysis of Adaptive-Slit Shear Walls

2013 ◽  
Vol 275-277 ◽  
pp. 1207-1211
Author(s):  
Ying Ying Yin ◽  
Ming Jin Chu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Experimental Studies ◽  
Shear Walls ◽  
Element Model ◽  
Finite Model ◽  
Test Results ◽  
Element Analysis ◽  
Practical Engineering ◽  
Monotonic Loads

In order to further study the mechanism of adaptive-slit shear walls under horizontal loads, and facilitate it better applied to practical engineering. On the basis of experimental studies, the ABAQUS finite element analysis software is used to establish the finite model of adaptive-slit shear. The finite element model accuracy is verified by comparing the model and test results. A validated model is used to study the mechanical property of adaptive-slit shear walls under monotonic loads.

Simplified analysis of cold-formed steel shear diaphragms

1979 ◽  
Vol 6 (2) ◽  
pp. 232-242
Author(s):  
S. Chockalingam ◽  
Kinh Ha ◽  
Paul Fazio
Keyword(s):  
Failure Mode ◽  
Shear Stiffness ◽  
Shear Behaviour ◽  
Deformation Pattern ◽  
Test Results ◽  
Approximate Methods ◽  
Design Engineers ◽  
Shear Characteristics ◽  
Cold Formed Steel ◽  
Simplified Analysis

Research carried out on light-gage metal shear diaphragms clearly indicates that the shear behaviour depends mainly on the behaviour of the fasteners. There is no generally accepted theory to predict the shear stiffness and strength of diaphragms with welded connections, even though there exist some approximate methods for the case of diaphragms with mechanical fasteners. Simplified formulas are presented in this paper for calculating the shear stiffness and strength of metal shear diaphragms. The analysis is based on the observed deformation pattern of the panels and on the failure mode of the fasteners. By using the test data of the fasteners, the shear characteristics of many diaphragms are predicted and compared with the test results. It is of interest to note that the proposed formulas are suitable for diaphragms with any types of fasteners. Because of their generality and simplicity, the theory would be extremely useful for design engineers.

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