Inelastic behavior and load displacement equations of low-rise RC solid and perforated shear walls

Two different types, one is the OSB panel perpendicular to the cold-formed thin steel and another the OSB panel parallel to the cold-formed thin steel, of self-tapping screw joints of cold-formed steel frame shear walls are tested under the monotonic loading. The load-displacement curves of the test specimens are obtained and the ultimate loads Fu and the corresponding displacements δu of two different types are analyzed. Fianlly, the conclusion that the influence from the direction between OSB and cold-formed thin steel to the performance of tapping screw joints is not significant is pointed up.

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Ultra high performance concrete shear walls

E3S Web of Conferences ◽

10.1051/e3sconf/202129404004 ◽

2021 ◽

Vol 294 ◽

pp. 04004

Author(s):

YiChen Fang

Keyword(s):

Finite Element ◽

High Performance ◽

High Performance Concrete ◽

Shear Walls ◽

Element Model ◽

Current Status ◽

Ultra High Performance Concrete ◽

Element Analysis ◽

Shear Bearing Capacity ◽

Load Displacement

The history of the development of Ultra-High Performance Concrete (UHPC) shear walls and the current status of today’s research as well as the future development prospects are comprehensively collated. The analysis process and conclusive results of the present-day domestic and international research on UHPC shear walls are highlighted. The load displacement curves, hysteresis curves and skeleton lines of ultra-high performance concrete shear walls under different experimental loads are collated and compared. Integrate the corresponding equations for shear bearing capacity and equations for the overall specimen load displacement curves. A finite element model of the ultra-high performance concrete shear wall is established to simulate and perform non-linear finite element analysis of its force process under unidirectional horizontal loading.

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Experimental and Numerical Study on the Seismic Performance of Prefabricated Reinforced Masonry Shear Walls

Applied Sciences ◽

10.3390/app8101856 ◽

2018 ◽

Vol 8 (10) ◽

pp. 1856 ◽

Cited By ~ 6

Author(s):

Weifan Xu ◽

Xu Yang ◽

Fenglai Wang ◽

Bin Chi

Keyword(s):

Energy Dissipation ◽

Seismic Performance ◽

Compression Ratio ◽

Numerical Study ◽

Load Capacity ◽

Damping Ratio ◽

Shear Walls ◽

Inelastic Behavior ◽

Element Analysis ◽

Lateral Drift

The seismic performance of prefabricated reinforced concrete block masonry shear walls (PRMSWs) was studied. Five PRMSWs were tested under cyclic loading to evaluate the effect of the axial compression ratio and the distribution of the vertical rebar on the inelastic behavior. Based on the experimental results, the lateral load capacity, failure mode, lateral drift, ductility, stiffness degradation, energy dissipation, and the seismic performance stability of the specimens were analyzed. The finite element analysis of the specimens was conducted with ABAQUS, which agreed quite well with the laboratory findings. Relevant results showed that PRMSW exhibited favorable ductility and energy dissipation. The increase of the compression ratio led to stiffer, but more brittle, inelastic behavior of the specimens that had higher flexural strength. The shear walls that had concentrated vertical rebar at the sides exhibited relatively higher load capacity and less ductility compared to the walls that had evenly distributed rebar. The inelastic lateral drift limit of the PRMSW could be assigned 1/120. The equivalent viscous damping ratio of the PRMSW was 9–13% at ultimate load. These results provide a technical basis for the design and application of the PRMSW structures.

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Monotonic and Cyclic Tests of Round Bamboo Shear Walls

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.517.135 ◽

2012 ◽

Vol 517 ◽

pp. 135-140 ◽

Cited By ~ 3

Author(s):

Zhi Li ◽

Yan Xiao ◽

Bo Shan ◽

Lei Li ◽

Rui Wang

Keyword(s):

Mechanical Properties ◽

Cyclic Loading ◽

Shear Walls ◽

Loading Conditions ◽

Test Results ◽

Cyclic Tests ◽

Lateral Resistance ◽

Load Displacement

This paper reports the first step of a study to evaluate the lateral resistance capacity of Round bamboo shear walls and its mechanical properties under Monotonic and cyclic loading conditions. The bamboo shear walls are built with round bamboo as its stub and with ply-bamboo sheet as its sheathing. Load-displacement curves of six round bamboo shear walls, with three different connection types, were obtained in this experiment, and the test results showed that the lateral resistance capacity of round bamboo shear walls can exceed 4.0kN/m, satisfying the projects requirement. A combination of nail and panel failures were observed in the test.

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Behavior of Shaft-Sand Interface from Local Measurements

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198196154800111 ◽

1996 ◽

Vol 1548 (1) ◽

pp. 74-80 ◽

Cited By ~ 3

Author(s):

Nagwa R. El Sakhawy ◽

Tuncer B. Edil

Keyword(s):

Surface Roughness ◽

Local Strain ◽

Model Parameters ◽

Interface Model ◽

Soil Specimen ◽

Inelastic Behavior ◽

Small Magnitude ◽

Displacement Response ◽

Load Displacement ◽

Axially Loaded

The load-displacement response of axially loaded structural inclusions in soil, which transfer the load to the soil along their shafts, is of growing interest in geotechnical engineering. The load-displacement response of a shaft interface is characterized by nonlinear and inelastic behavior. Surface roughness of the inclusion and stresses and deformation characteristics (stress-strain response, dilation, or contraction) of the soil element surrounding the inclusion are significant aspects of the interface mechanism. Localized shear displacement at the soil-shaft interface necessitates use of a constitutive model specifically developed for the interface. To verify theoretical models and modify and improve them, laboratory tests are performed. In recent years, there has been increasing emphasis in measurement of small-magnitude local strains to define stiffness at low strains similar to those encountered in the field in stress-path testing. To verify the theoretical model of the shaft-soil interface, a special test rig was developed that uses a cylindrical soil specimen with an inclusion in its center. The specimen represents a soil element surrounding a structural inclusion. The shaft-sand interface was investigated by small-magnitude local measurement of interface strains and thereby interface stresses and displacements during axial loading of the inclusion. The results are compared with those inferred from global measurements of interface variables. The advantages of the small-magnitude local strain measurements in determining the interface model parameters are presented. The use of the measured quantities in an elasto-plastic interface model is demonstrated by capturing the effects of confining stresses and boundary conditions of the soil specimen surrounding an axially loaded inclusion as well as the surface roughness of the inclusion.

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Bilinear Load–Displacement Curve of Semi-supported Steel Shear Walls

International Journal of Steel Structures ◽

10.1007/s13296-019-00301-8 ◽

2019 ◽

Vol 20 (2) ◽

pp. 504-524

Author(s):

S. Ebrahim Sadat Kholerdi ◽

Alireza Jahanpour

Keyword(s):

Shear Walls ◽

Displacement Curve ◽

Load Displacement

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Monotonie and cyclic tests of timber shear walls

Canadian Journal of Civil Engineering ◽

10.1139/l92-050 ◽

1992 ◽

Vol 19 (3) ◽

pp. 415-422 ◽

Cited By ~ 21

Author(s):

J. D. Dolan ◽

B. Madsen

Keyword(s):

Analytical Study ◽

Shear Walls ◽

Shear Wall ◽

Displacement Curve ◽

Cyclic Tests ◽

Maximum Displacement ◽

Load Displacement ◽

Timber Shear Walls ◽

Ramp Load ◽

Monotonic Load

The results for monotonic (ramp load) and slow cyclic racking tests of timber shear walls are presented. The tests are part of an extensive experimental and analytical study to investigate the behaviour of timber shear walls subjected to earthquakes. The results of full-size shear wall tests show the important influence of the nail connection between the sheathing and the framing on the load-displacement characteristics of shear walls. The premise that the hysteresis for the shear wall is contained within an envelope defined by the monotonic load-displacement curve for the wall is confirmed. Also, the hysteresis is studied to determine the physical behaviour that causes the shape of the hysteresis to be dependent on the maximum displacement of the wall. Both the monotonic and cyclic racking behaviours of timber shear walls are established; and the performances of plywood and waferboard sheathed shear walls are compared. Key words: full-scale monotonic and cyclic tests, plywood, waferboard, timber shear walls.

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