Skip header and navigation

10 records – page 1 of 1.

Seismic Design of Timber Buildings with a Direct Displacement-Based Design Method

https://research.thinkwood.com/en/permalink/catalogue1904
Year of Publication
2013
Topic
Seismic
Design and Systems
Material
Light Frame (Lumber+Panels)
Application
Frames
Wood Building Systems
Author
Loss, Cristiano
Piazza, Maurizio
Zonta, Daniele
Editor
Cruz, Paulo J.S.
Publisher
CRC Press
Year of Publication
2013
Country of Publication
United States
Format
Book/Guide
Material
Light Frame (Lumber+Panels)
Application
Frames
Wood Building Systems
Topic
Seismic
Design and Systems
Keywords
Performance-Based Seismic Design
Direct Displacement-Based Design
Displacement
Damping
Language
English
Research Status
Complete
Series
Structures and Architecture: Concepts, Applications and Challenges
ISBN
978-1-4822-2461-0
Summary
Modern seismic design procedures are widely represented by the concept of Performance-Based Seismic Design (PBSD). Direct Displacement-Based Design (DDBD) procedure for PBSD of buildings is considered a very promising method which uses displacement as an input design parameter. The DDBD procedure first codified by Priestley requires an a priori estimate of the design displacement and the associated equivalent viscous damping of the structure, at design performance levels. In this paper, design parameters for the ultimate limit state have been developed for a common construction system for timber buildings. Such parameters are defined as a function of mechanical and geometrical connection configurations.
Online Access
Free
Resource Link
Less detail

Seismic Design of a 10-Storey CLT Building

https://research.thinkwood.com/en/permalink/catalogue384
Year of Publication
2013
Topic
Design and Systems
Seismic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Follesa, Maurizio
Vassallo, Davide
Christovasilis, Ioannis
Organization
FPInnovations
Year of Publication
2013
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Design and Systems
Seismic
Connections
Keywords
Finite Element Model
Equivalent Seismic Force Procedure
Modal Response Spectrum Method
Language
English
Research Status
Complete
Summary
This report presents the seismic design of a 10-storey Cross Laminated Timber (CLT) building in Vancouver, BC, conducted according to the National Building Code of Canada. The multi-storey condominium consists of 20 apartments for a total floor area of about 2000 m2. First, a preliminary simplified model is formulated assuming the same stiffness per meter for each wall of the building. The Equivalent Seismic Force Procedure is applied and the results serve for a preliminary design of all the major connections that play a significant role on the lateral stiffness of the building, assuming rigid in plane floor diaphragms and well-anchored CLT walls. Based on the results of the preliminary design, a 3 dimensional finite element model is created, describing analytically the modelling approach adopted, and both the Equivalent Seismic Force Procedure (referred as static analysis) and the Modal Response Spectrum Method (referred as dynamic analysis) are applied to obtain the design forces for each wall of the building. Based on the results from the dynamic analysis, the final seismic design of the building is performed and the results are presented for connections dedicated to transfer (i) shear forces from floor diaphragms to walls below and from walls to diaphragms below, (ii) uplift forces for each wall, (iii) boundary forces between CLT panels within the same walls, (iv) boundary forces between perpendicular walls, and (v) boundary forces between CLT floor panels. All connections prescribed to provide ductility and energy dissipation are designed to fail in ductile failure mode according to the CSA 086-09 while connections that should remain within the elastic range to allow the ductile connections to yield are designed with overstrength factor.
Online Access
Free
Resource Link
Less detail

Study on Seismic Performance of Building Construction with Cross Laminated Timber: Part 17: Displacement Measurement by Image Processing

https://research.thinkwood.com/en/permalink/catalogue978
Year of Publication
2013
Topic
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Iizuka, Takuaki
Yasushi, Niitsu
Hamamoto, Takashi
Miyake, Tatsuya
Gosei, Murakami
Yahaura, Sota
Kaiko, Naoto
Organization
Architectural Institute of Japan
Year of Publication
2013
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Keywords
Image Processing
Displacement
Seismic Performance
Language
Japanese
Research Status
Complete
Summary
Cross-Laminated Timber (CLT) structures exhibit satisfactory performance under seismic conditions. This ispossible because of the high strength-to-weight ratio and in-plane stiffness of the CLT panels, and the capacity ofconnections to resist the loads with ductile deformations and limited impairment of strength. This study sum-marises a part of the activities conducted by the Working Group 2 of COST Action FP1402, by presenting an in-depth review of the research works that have analysed the seismic behaviour of CLT structural systems. Thefirstpart of the paper discusses the outcomes of the testing programmes carried out in the lastfifteen years anddescribes the modelling strategies recommended in the literature. The second part of the paper introduces theq-behaviour factor of CLT structures and provides capacity-based principles for their seismic design.
Online Access
Free
Resource Link
Less detail

Study on Seismic Performance of Building Structure with Cross Laminated Timber: Part 13: Relative Story Displacement of Full Scale 3-Story Model -Comparisons with Shaking Table Test

https://research.thinkwood.com/en/permalink/catalogue982
Year of Publication
2013
Topic
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Yahaura, Sota
Goto, Hiroshi
Hamamoto, Takashi
Gosei, Murakami
Miyake, Tatsuya
Matsumoto, Kazuyuki
Kaiko, Naoto
Organization
Architectural Institute of Japan
Year of Publication
2013
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Keywords
Static Load Tests
Shaking Table Test
Shear Force
Seismic Performance
Language
Japanese
Research Status
Complete
Summary
The material presented in this paper refers to a part of the investigation on cross-laminated (XLam) wall panel systems subjected to seismic excitation, carried out within the bilateral project realized by the Institute of Earthquake Engineering and Engineering Seismology (IZIIS) and the Faculty of Civil and Geodetic Engineering at the University of Ljubljana (UL FCGE). The full program of the research consista of basic tests of small XLam wooden blocks and quasi-static tests of anchors, then quasi-static tests of full-scale wall panels with given anchors, shaking-table tests of two types of XLam systems including ambient-vibration tests, and finally analytical research for the definition of the computational model for the analysis of these structural systems. In this paper, the full-scale shaking-table tests for one XLam system type (i.e. specimen 1 consisting of two single-unit massive wooden XLam panels) that have been performed in the IZIIS laboratory are discussed. The principal objectives of the shaking-table tests have been to get an insight into the behavior of the investigated XLam panel systems under seismic excitations, develop a physical and practical computational model for simutalion of the dynamic response based on the tests, and finally correlate the results with those from the previously performed quasi-static tests on the same wooden panel types. The obtained experimental results have been verified using a proposed computational model that included new contitutive relationships for anchors and contact zones between panels and foundations. Because a reasonable agreement between the numerical and experimental results has been achieved, the proposed computational model is expected to provide a solid basis for future research on the practical design of these relatively new materials and systems.
Online Access
Free
Resource Link
Less detail

Design Example: Wood Diaphragm Using Envelope Method

https://research.thinkwood.com/en/permalink/catalogue2613
Year of Publication
2013
Topic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Shear Walls
Author
Neylon, B.
Wang, Jasmine
Ni, Chun
Organization
FPInnovations
Year of Publication
2013
Format
Report
Material
Glulam (Glue-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Shear Walls
Topic
Design and Systems
Keywords
Shear
Diaphragm
Low-Rise
Commercial
Language
English
Research Status
Complete
Summary
This building is a typical one-storey commercial building located in Vancouver, BC. The plan dimensions are 30.5 m x 12.2 m (100’ x 40’), with a building height of 5 m. The walls are wood-based shear walls, with a wood diaphragm roof and a steel moment frame at the storefront. The roof plan is shown in Figure 1. The site is Seismic Class ‘C’. Wind, snow and seismic figures specific to the project location are taken from the current version of the British Columbia Building Code (2012). Roof dead load is assumed to be 1.0 kPa and the wall weight is 0.5 kPa. The weight of non-structural items including mechanical equipment and the storefront façade has not been included in this example for simplicity.
Online Access
Free
Resource Link
Less detail

Seismic Design of Core-Walls for Multi-Storey Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue134
Year of Publication
2013
Topic
Design and Systems
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Shafts and Chases
Author
Dunbar, Andrew
Pampanin, Stefano
Palermo, Alessandro
Buchanan, Andrew
Year of Publication
2013
Country of Publication
New Zealand
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Shafts and Chases
Topic
Design and Systems
Seismic
Keywords
Multi-Storey
Prefabrication
Pres-Lam
Residential
Quasi-Static Loading
Energy Dissipation
U-Shaped Flexural Plates
Language
English
Conference
New Zealand Society for Earthquake Engineering Conference
Research Status
Complete
Notes
April 26-28, 2013, Wellington, New Zealand
Summary
This paper describes options for seismic design of pre-fabricated timber core-wall systems, used as stairwells and lift shafts for lateral load resistance in multi-storey timber buildings. The use of Cross-Laminated Timber (CLT) panels for multi-storey timber buildings is gaining popularity throughout the world, especially for residential construction. This paper describes the possible use of CLT core-walls for seismic resistance in open-plan commercial office buildings in New Zealand. Previous experimental testing at the University of Canterbury has been done on the in-plane behaviour of single and coupled Pres-Lam post-tensioned timber walls. However there has been very little research done on the behaviour of timber walls that are orthogonal to each other and no research into CLT walls in the post-tensioned Pres-Lam system. This paper describes the proposed test regime and design detailing of two half-scale twostorey CLT stairwells to be tested under a bi-directional quasi-static loading. The test specimens will include a half-flight stair case with landings within the stairwell. The “High seismic option” consists of post-tensioned CLT walls coupled with energy dissipating U-shaped Flexural Plates (UFP) attached between wall panels and square hollow section steel columns at the corner junctions. An alternative “Low seismic option” uses the same post-tensioned CLT panels, with no corner columns or UFPs. The panels will be connected by screws to provide a semi-rigid connection, allowing relative movement between the panels producing some level of energy dissipation.
Online Access
Free
Resource Link
Less detail

Study on Seismic Performance of Building Construction with Cross Laminated Timber: Part 14: Deformation of Joints and Fracture Behavior on Three Story Full-Scale Static Load Test

https://research.thinkwood.com/en/permalink/catalogue981
Year of Publication
2013
Topic
Seismic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Nasu, Hideyuki
Yahaura, Sota
Gosei, Murakami
Goto, Hiroshi
Hamamoto, Takashi
Miyake, Tatsuya
Yasumura, Motoi
Organization
Architectural Institute of Japan
Year of Publication
2013
Country of Publication
Japan
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Connections
Keywords
Static Load Tests
Mid-Rise
Fracture Behavior
Full Scale
Seismic Performance
Language
Japanese
Research Status
Complete
Summary
This paper gives a bibliographical review of the finite element methods (FEMs) applied in the analysis of wood. The added bibliography at the end of this article contains 300 references to papers and conference proceedings on the subject that were published between 1995 and 2004. The following topics are included: Wood as a construction material—material and mechanical properties; wood joining and fastening; fracture mechanics problems; drying process, thermal properties; other topics. Wood products and structures—lumber; glulam, panels, wood composites; trusses and frames; floors, roofs; bridges; other products/structures.
Online Access
Free
Resource Link
Less detail

Dynamic Analysis of Large-Scale Wooden Structures with a Core of Reinforced Concrete and Considering Wooden Diaphragm Stiffness : Part1. Background and Analysis Models

https://research.thinkwood.com/en/permalink/catalogue876
Year of Publication
2013
Topic
Design and Systems
Application
Hybrid Building Systems
Author
Asakawa, Takeshi
Kano, Daisuke
Organization
Architectural Institute of Japan
Year of Publication
2013
Country of Publication
Japan
Format
Journal Article
Application
Hybrid Building Systems
Topic
Design and Systems
Keywords
Mid-Rise
Timber-Concrete Hybrid
Language
Japanese
Research Status
Complete
Summary
The purpose of this paper is to outline the foundation for the research by presenting the underlying design philosophy and resulting design framework that will serve as the basis for the emerging design methodology. In this way, context will be provided for the technical papers to follow and the eventual design methodology at the project’s conclusion. A companion paper, “Seismic Design Methodology for Precast Concrete Diaphragms—Part 2: Research Program,” describes the specific analytical and experimental activities taking place in the research.
Online Access
Free
Resource Link
Less detail

Dynamic Analysis of Large-Scale Wooden Structures with a Core of Reinforced Concrete and Considering Wooden Diaphragm Stiffness : Part2 Results of Response Analysis and Studies

https://research.thinkwood.com/en/permalink/catalogue875
Year of Publication
2013
Topic
Design and Systems
Application
Hybrid Building Systems
Author
Kano, Daisuke
Asakawa, Takeshi
Organization
Architectural Institute of Japan
Year of Publication
2013
Country of Publication
Japan
Format
Journal Article
Application
Hybrid Building Systems
Topic
Design and Systems
Keywords
Mid-Rise
Timber-Concrete Hybrid
Language
Japanese
Research Status
Complete
Summary
The purpose of this paper is to outline the foundation for the research by presenting the underlying design philosophy and resulting design framework that will serve as the basis for the emerging design methodology. In this way, context will be provided for the technical papers to follow and the eventual design methodology at the project’s conclusion. A companion paper, “Seismic Design Methodology for Precast Concrete Diaphragms—Part 2: Research Program,” describes the specific analytical and experimental activities taking place in the research.
Online Access
Free
Resource Link
Less detail

Guide for Designing Energy-Efficient Building Enclosures for Wood-Frame Multi-Unit Residential Buildings in Marine to Cold Climate Zones in North America

https://research.thinkwood.com/en/permalink/catalogue2620
Year of Publication
2013
Topic
Energy Performance
Design and Systems
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Author
Finch, Graham
Wang, J.
Ricketts, D.
Organization
FPInnovations
Year of Publication
2013
Country of Publication
Canada
Format
Book/Guide
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Topic
Energy Performance
Design and Systems
Keywords
Thermal Performance
Multi-Family
Residential Buildings
Energy Efficiency
Building Code
Language
English
Research Status
Complete
Summary
The Guide for Designing Energy-Efficient Building Enclosures for Wood-Frame Multi-Unit Residential Buildings in Marine to Cold Climate Zones in North America was developed by FPInnovations in collaboration with RDH Building Engineering Ltd., the Homeowner Protection Office, Branch of BC Housing, and the Canadian Wood Council. The project is part of efforts within the Advanced Building Systems Program of FPInnovations to assemble and add to the knowledge base regarding Canadian wood products and building systems. The team of the Advanced Building Systems Program works with members and partners of FPInnovations to address critical technical issues that threaten existing markets for wood products or which limit expansion or access to such new markets. This guide was developed in response to the rapidly changing energy-efficiency requirements for buildings across Canada and the United States. This guide serves two major objectives: To assist architects, engineers, designers and builders in improving the thermal performance of building enclosures of wood multi-unit residential buildings (MURBs), in response to the increasingly stringent requirements for the energy efficiency of buildings in the marine to cold climate zones in North America (U.S. DOE/ASHRAE and NECB Climate Zones 5 through 7 and parts of Zone 4); To advance MURB design practices, construction practices, and material use based on best knowledge, in order to ensure the durable performance of wood-frame building enclosures that are insulated to higher levels than traditional wood-frame construction. The major requirements for thermal performance of building enclosures are summarized (up to February 2013), including those for the following codes and standards: 2011 National Energy Code of Canada for Buildings (2011 NECB); 2013 interim update of the 2010 National Building Code of Canada (2010 NBC, Section 9.36–Energy Efficiency); 2012 International Energy Conservation Code (2012 IECC); American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standard 90.1– Energy Standard for Buildings Except Low-Rise Residential Buildings (2004, 2007, and 2010 versions). In addition to meeting the requirements of the various building codes and standards, a building may need to incorporate construction practices that reflect local preferences in material use, design and construction. Regional climate differences will also affect design solutions. This guide primarily addresses above-grade walls, below-grade walls and roofs of platform wood-frame construction. It also includes information regarding thermal performance of cross-laminated timber (CLT) assemblies as well as the use of non-bearing wood-frame exterior walls (infill walls) in wood post-and-beam and concrete structures. Examples of thermal resistance calculations, building assemblies, critical interface detailing, and appropriate material selection are provided to help guide designers and builders meet the requirements of the various energy-efficiency codes and standards, achieve above-code performance, and ensure long-term durability. This guide builds on the fundamentals of building science and on information contained within the Building Enclosure Design Guide: Wood-Frame Multi-Unit Residential Buildings, published by the Homeowner Protection Office, Branch of BC Housing. This guide is based on the best current knowledge and future updates are anticipated. The guide is not intended to be a substitute for professional advice that considers specific building parameters.
Online Access
Free
Resource Link
Less detail

10 records – page 1 of 1.