Download or read book Analytical Modeling of Wood Frame Shear Walls Subjected to Vertical Load written by Hai Nguyendinh and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A nonlinear automated parameter fitted analytical model that numerically predicts the load-displacement response of wood frame shear walls subjected to static monotonic loading with and without vertical load is presented. This analytical model referred to as Analytical Model of wood frame SHEar walls subjected to Vertical load (AMSHEV) is based on the kinematic behavior of wood frame shear walls and captures significant characteristics observed from experimental testing through appropriate modeling of three failure mechanisms that can occur within a shear wall under static monotonic load: 1) failure of sheathing-to-framing connectors, 2) failure of vertical studs, and 3) uplift of end studs from bottom sill. Previous models have not accounted for these failure mechanisms as well as the inclusion of vertical load, which has shown to reveal beneficial effects such as increasing the ultimate load capacity and limiting uplift of the wall as noted in experimental tests. Results from the proposed numerical model capture these effects within 7% error of experimental test data even when different magnitudes of vertical load are applied to predict the ultimate load capacity of wood frame shear walls.
Download or read book Analytical Modeling of Wood frame Shear Walls and Diaphragms written by Johnn Paul Judd and published by . This book was released on 2005 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical models of wood-frame shear walls and diaphragms for use in monotonic, quasi-static (cyclic), and dynamic analyses are developed in this thesis. A new analytical model is developed to accurately represent connections between sheathing panels and wood framing members (sheathing-to-framing connections) in structural analysis computer programs. This new model represents sheathing-to-framing connections using an oriented pair of nonlinear springs. Unlike previous models, the new analytical model for sheathing-to-framing connections is suitable for both monotonic, cyclic, or dynamic analyses. Moreover, the new model does not need to be scaled or adjusted. The new analytical model may be implemented in a general purpose finite element program, such as ABAQUS, or in a specialized structural analysis program, such as CASHEW. The analytical responses of several shear walls and diaphragms employing this new model are validated against measured data from experimental testing. A less complex analytical model of shear walls and diaphragms, QUICK, is developed for routine use and for dynamic analysis. QUICK utilizes an equivalent single degree of freedom system that has been determined using either calibrated parameters from experimental or analytical data, or estimated sheathing-to-framing connection data. Application of the new analytical models is illustrated in two applications. In the first application, the advantages of diaphragms using glass fiber reinforced polymer (GFRP) panels in conjunction with plywood panels as sheathing (hybrid diaphragms) are presented. In the second application, the response of shear walls with improperly driven (overdriven)nails is determined along with a method to estimate strength reduction due to both the depth and the percentage of total nails overdriven.
Download or read book Evaluation of System Effects and Structural Load Paths in a Wood framed Structure written by Kenneth Grant Martin and published by . This book was released on 2010 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to develop an analytical model of a light-framed wood structure using a prevalent structural analysis computer program in order to evaluate system effects and define load paths within the structure, especially under extreme wind events. Simplified modeling techniques and material definitions were developed and used throughout the analysis. A three dimensional 30-ft by 40-ft building was modeled using SAP2000. The building had a gable roof system comprised of Fink trusses. Wall and roof sheathing was modeled using SAP's built-in thick shell element. Conventional light-frame construction practices were assumed, and the model was linear with all joints considered to be either pinned or rigid. Also, the effect of edge nail spacing of the wall sheathing was incorporated by way of a novel correlation procedure which eliminates the need to represent each nail individually. Instead, a single sheathing element represented each wall and property modifiers were assigned to that wall element based on the nailing schedule. The NDS 3-term shear wall equation was used to derive the correlation procedure and the correlated model was compared to full-scale testing results with good agreement. The computer model was validated against both two and three dimensional experimental studies (in-plane and out-of-plane). Once validated it was subjected to uniform loads to gain insight into its uplift behavior. Uniform uplift pressure was applied to the roof, and vertical foundation reactions were evaluated. In this phase of the investigation, the building geometry was altered in several different ways to explore the effect of these variations. Next, the model was subjected to several uplift loading scenarios corresponding to worst-case simulated hurricane events. With these inputs, the same uplift reaction profiles were generated. Finally, for comparison the model was loaded using the "Component and Cladding" pressures determined at a comparable wind speed, as given by ASCE 7-05 (lateral and uplift). The ASCE 7-05 uplift pressures were found to adequately encompass the range of uplift reactions that can be expected from a severe wind event such as a hurricane. Also, the analytical model developed in this study inherently takes into account system effects. Consequently, it was observed that ASCE 7-05 "Component and Cladding" pressures satisfactorily captured the building's uplift response at the foundation level without the use of "Main Wind Force-Resisting System" loads. Additionally, it was noted that the manner in which the walls of thestructure distribute roof-level loads to the foundation depends on the edge nailing of the wall sheathing. Finally, the effects of variations in the building geometry were explored and notable results include the presence of a door in one of the walls. It was revealed that the addition of a door to any wall results in a loss of load-carrying capacity for the entire wall. Moreover, the wall opposite the one with the door can also be significantly affected depending on the orientation of the trusses. In general, it was determined that complex, three-dimensional building responses can be adequately characterized using the practical and effective modeling procedures developed in this study. The same modeling process can be readily applied in industry for similar light-framed wood structures.
Download or read book Evaluation of the Structural Performance of Wood Shear Walls Subjected to Lateral Loading and Moisture Cycling written by Jian Li and published by . This book was released on 2007 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hysteretic Response of Steel Clad Wood Framed Shear Walls Under Reverse cyclic Loading written by Khoi Duc Mai and published by . This book was released on 2016 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: FEA models were developed and validated to predict shear strength and effective shear modulus of SCWF shear walls under monotonic loading. Moreover, the hysteretic behavior of SCWF shear walls was predicted using hysteretic behavior of sheathing-to-framing connector elements. Analyses were performed to assess the shear strength, stiffness, ductility, equivalent energy elastic plastic (EEEP), and hysteretic parameters of tested SCWF shear wall specimens. Experimental tests also provided the seismic design coefficients of SCWF shear walls, which are currently lacking in the building codes.
Download or read book Testing and Performance of Steel Frame Wood Panel Shear Walls written by Chang Yi Chen and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis has two main objectives. One is to investigate the performance characteristics of various configuration light gauge steel frame/wood panel shear walls under monotonic and reversed cyclic loading. The second is to recommend an effective analytical model, which relies on sheathing-to-framing connection test results and the mechanical properties of structural sheathing and steel frame members, to predict the resistance and deflection of shear walls subjected to lateral loads." --
Download or read book Transactions of the American Society of Civil Engineers written by American Society of Civil Engineers and published by . This book was released on 2005 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 29-30 contain papers of the International Engineering Congress, Chicago, 1893; v. 54, pts. A-F, papers of the International Engineering Congress, St. Louis, 1904.
Download or read book Experimental and Analytical Modeling of R C Shear Walls written by Peter Linde and published by . This book was released on 1988 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Analysis of Irregular Shaped Structures Diaphragms and Shear Walls written by Terry R. Malone and published by McGraw Hill Professional. This book was released on 2011-12-05 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Complete Guide to Solving Lateral Load Path Problems The Analysis of Irregular Shaped Structures: Diaphragms and Shear Walls explains how to calculate the forces to be transferred across multiple discontinuities and reflect the design requirements on construction documents. Step-by-step examples offer progressive coverage, from basic to very advanced illustrations of load paths in complicated structures. The book is based on the 2009 International Building Code, ASCE/SEI 7-05, the 2005 Edition of the National Design Specification for Wood Construction, and the 2008 Edition of the Special Design Provisions for Wind and Seismic (SDPWS-08). COVERAGE INCLUDES: Code sections and analysis Diaphragm basics Diaphragms with end horizontal offsets Diaphragms with intermediate offsets Diaphragms with openings Open front and cantilever diaphragms Diaphragms with vertical offsets Complex diaphragms with combined openings and offsets Standard shear walls Shear walls with openings Discontinous shear walls Horizontally offset shear walls The portal frame Rigid moment-resisting frame walls--the frame method of analysis
Download or read book Analysis of Shear Walls written by Andrzej Cholewicki and published by . This book was released on 1985 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reliability Analysis of Fire exposed Light frame Wood Floor Assemblies written by Frank E. Woeste and published by . This book was released on 1980 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cyclic Response of Woodframe Shearwalls written by Kip Gatto and published by . This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Modeling of Cyclic Shear written by Kristijan Imre Kolozvari and published by . This book was released on 2013 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to develop a modeling approach that integrates flexure and shear interaction under cyclic loading conditions to obtain reliable predictions of inelastic responses of reinforced concrete (RC) structural walls. The proposed modeling approach incorporates cyclic RC panel constitutive behavior based on an interpretation of the fixed-strut-angle approach into a two-dimensional fiber-based macroscopic model. Coupling of axial and shear responses under cyclic loading is achieved at the fiber (panel) level, which further allows coupling of flexural and shear responses at the element level. The sensitivity of model results to various modeling parameters (e.g., material constitutive parameters and modeling parameters), wall configuration parameters (e.g., aspect ratio, boundary and web reinforcement ratios), and response parameters (levels of wall axial load and shear) was investigated to demonstrate the ability of the model to predict the behavior or RC walls for a broad range of conditions. The proposed analytical model was validated and calibrated against experimental results obtained from six large-scale, heavily instrumented, cantilever structural wall specimens characterized with different aspect ratios (1.5, 2.0 and 3.0), axial load levels (0.0025 A_g_f'_c, 0.07 A_g_f'_c and 0.10 A_g_f'_c) and wall shear stress levels (between approximately 4 and 8 [square root]"f'_c) psi) tested under combined constant axial load and reversed cyclic lateral loading applied at the top of the wall. Comparisons of experimental and analytical model results for moderately slender RC walls (aspect ratio 1.5 and 2.0) revealed that the model successfully captures experimentally observed interaction between nonlinear shear and flexural deformations under cyclic loading and predicts lateral strength and stiffness that is within 10% of experimentally measured values. In addition, the magnitudes and relative contributions of shear and flexural deformations along the wall height were predicted closely at low and moderate drift levels, whereas at drift levels larger than 2.0%, model results were within 25% of experimentally measured deformation components. As well, localized nonlinear responses such as vertical tensile and compressive strains and wall rotations at the wall base were well predicted by the model. The model results were less accurate for the slender (aspect ratio 3.0) RC wall specimen in terms of relative contributions of shear and flexural deformations and magnitudes of compressive strains. Demonstrated model sensitivity to parameters of the implemented RC panel behavior suggested the need for calibration of these parameters for reliable predictions of nonlinear wall behavior. Given the limited model calibration performed in this study, additional work is needed, particularly for slender RC walls where preliminary results were less accurate. Finally, the implementation of the model into a publicly available computational platform is required to enable more detailed system level studies and future model development.
Download or read book Lateral Resistance of Steel clad Wood framed Shear Walls with Openings written by Dustin G. Gatchalian and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Model of Cold formed Steel Framed Shear Wall with Steel Sheet and Wood based Sheathing written by Noritsugu Yanagi and published by . This book was released on 2013 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Canadian Society for Civil Engineering Annual Conference 2023 Volume 11 written by Serge Desjardins and published by Springer Nature. This book was released on with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
