2 edition of Analysis of thermal change in stress-laminated timber bridge decks found in the catalog.
Analysis of thermal change in stress-laminated timber bridge decks
James A. Kainz
2001 by U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, National Wood in Transportation Information Center, in cooperation with the U.S. Dept. of Transportation, Federal Highway Administration in [Madison, WI] .
Written in English
|Statement||James A. Kainz, James P. Wacker, Michael A. Ritter.|
|Series||Research paper FPL-RP -- 598.|
|Contributions||Wacker, James P., Ritter, Michael A., Forest Products Laboratory (U.S.), National Wood in Transportation Information Center (U.S.), United States. Federal Highway Administration.|
|The Physical Object|
|Pagination||9 p. :|
Analysis of Fireground Contamination of Firefighting Turnouts Using Headspace Sampling-Gas Chromatography-Mass Spectrometry (HS-GC-MS) Thermal Capacity of Railway Wheels – Temperatures, Residual Stresses and Fatigue Damage with Special Focus on Metro Applications Performance of Stress-Laminated-Timber Bridge Decks. Chen, Si PQDT. Oregon Standard Drawings are to be used without significant change, as determined by the drawing Engineer of Record. Where a significant change to a standard drawing is needed, submit a design.
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Thermal change on stress-laminated decks needs additional investigation. Objective and Scope Our objective was to determine if large temperature de-creases significantly affect the interlaminar compression level of stress-laminated deck sections. Because of some limitations, some aspects that might affect stress loss were not considered in this study.
Analysis of thermal change in stress-laminated timber bridge decks / By James A. Kainz, Michael A. Ritter, James P. Wacker, Analysis of thermal change in stress-laminated timber bridge decks book States. Federal Highway Administration., National Wood in Transportation Information Center (U.S.) and Forest Products Laboratory (U.S.).
Stress-laminated timber (SLT) bridge decks were developed in North America in the late nineteen-seventies. In the subsequent decades, this deck concept started to be utilized also elsewhere, especially in Australia and in the Nordic European decks consist of parallel timber beams stacked side by side, most commonly with their longitudinal direction parallel to the long direction.
a research program conducted on another stress-laminated deck as part of the University of Wisconsin’s research on solid-sawn stress-laminated wood decks. The earlier deck, which will be referred to in this report, was designated the Wheeler deck and was assembled using 4- by in.
timber laminae with a span length of 48 ft. A complete description ofFile Size: KB. Stress-laminated timber (SLT) bridge decks are generally designed using either linear hand calculation methods or linear finite-element models. Several studies have shown, however, that the behavior of Analysis of thermal change in stress-laminated timber bridge decks book decks is nonlinear when loaded until failure.
Stress-laminated-timber (SLT) bridge decks are a valid alternative to conventional short- and medium-span bridges in terms of cost and performance. SLT decks are made from a number of planks or glulam beams positioned side by side and stressed together using high-strength steel bars.
A concentrated load can therefore be distributed from the loaded beams onto adjacent beams due to the Cited by: 2. to produce reliable bending and shear resistance for bridge decks for heavy highway wheel loads.4,5 However, several limitations remain if this form of construction is to be successfully used in the UK.
Prior to mid there had been no known examples of stress-laminated-timber bridge structures in. A general assumption reported in the literature is that the structural response of a stress-laminated-timber (SLT) bridge deck is linear until failure. However, few studies of ultimate-load tests (ULTs) on timber bridges have been reported.
Stress-laminated bridges perform well if adequate bar force is maintained to provide the interlaminar friction and load transfer between adjacent deck laminations. Stress-laminated decks are made of both wood and steel components; there-fore, different material thermal properties may cause bar force to change as the temperature changes.
Stress-laminated timber bridges are used around the world providing sustainable, sturdy and cost effect solutions. Able to span up to 20 m and more, the use of timber makes the stress-laminated bridge light weight to maximise strength while minimising bridge depth.
Stress-laminated bridges are portable, prefabricated and easy to maintain. MAY LRFD BRIDGE DESIGN Timber Timber is a term referring to larger pieces of lumber. For the purposes of this chapter Analysis of thermal change in stress-laminated timber bridge decks book ASTM definition is applied, timber is lumber that is 5 inches thick and larger on its least dimension face.
Analysis of thermal change in stress-laminated timber bridge decks book Wood The part of a tree inside of. This paper summarizes recent laboratory and field data studies on thermal performance of stress-laminated timber highway bridges.
Concerns about the reliability of stress-laminated deck bridges. Stress-laminated deck plates are typically used in bridge decks.
A pre-stressing force is applied perpendicular to the grain and increases the shear friction between the individual pieces of. In this study, it is carried out to analysis of the bolt pretension of the stress-laminated timber.
Bolt pretension of stress-laminated timber was decreased by time. The loss of force is caused by. The Online Books Page. Online Books by. Michael A. Ritter. Books from the extended shelves: Ritter, Michael A.: Analysis of thermal change in stress-laminated timber bridge decks / ([Madison, WI]: U.S.
Dept. of Agriculture, Forest Service, Forest Products Laboratory, National Wood in Transportation Information Center, in cooperation with the U.S. Dept. of Transportation, Federal Highway. Since stress‐laminated timber bridge decks are modeled as orthotropic plates, the actual system stiffness properties are needed in the analysis.
This paper presents an analytical‐experimental study to verify existing bending stiffness reduction factors for decks with regular butt‐joint patterns. Keywords:shear, stress-laminated timber deck, interface, analytical and numerical modelling.
Introduction Stress-laminated timber decks are widely used in North America and in Australia for bridge constructions; they have been used in Europe by Natterer for floors.
Numerous studies made by. Get this from a library. Analysis of thermal change in stress-laminated timber bridge decks. [James A Kainz; James P Wacker; Michael A Ritter; Forest Products Laboratory (U.S.); National Wood in Transportation Information Center (U.S.); United States.
Federal Highway Administration.] -- As the timber bridge design has evolved, some engineers have been concerned about the integrity of the. Get this from a library. Analysis of thermal change in stress-laminated timber bridge decks. [James A Kainz; James P Wacker; Michael A Ritter; Forest Products Laboratory (U.S.); National Wood in Transportation Information Center (U.S.); United States.
Federal Highway Administration.]. The stress-laminated timber bridge deck has been successfully used for short span bridges. A design philosophy, procedure, and related equations have been developed for a timber-steel composite.
Forest Products Laboratory (U.S.): Analysis of thermal change in stress-laminated timber bridge decks / ([Madison, WI]: U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, National Wood in Transportation Information Center, in cooperation with the U.S.
Dept. of Transportation, Federal Highway Administration, ), also by. Federal Highway Administration: Analysis of thermal change in stress-laminated timber bridge decks / ([Madison, WI]: U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, National Wood in Transportation Information Center, in cooperation with the U.S.
Dept. of Transportation, Federal Highway Administration, ), also by. Different types of timber bridge decks 12 Composite bridge decks 12 Nail- and dowel laminated timber deck 13 Stress-laminated-timber bridge decks (SLTD) 13 T- and box-beam bridge decks 13 3 BEHAVIOUR OF STRESS LAMINATED TIMBER BRIDGE DECKS 15 Pre-stressing system Wood material has a thermo-hygromechanical behaviour because its deformation depends on the combined action of temperature, relative humidity and mechanical load variations.
Stress-laminated timber bridge deck show a reduction of stress in the tension bars mainly due to the relaxation and shrinkage of wood, increasing with moisture content and temperature changes within the by: James P.
Wacker. Forest Products Analysis of Thermal Change in Stress-Laminated Timber Bridge Decks. Article. Full-text available. Pennsylvania Hardwood Timber Bridges: Field Performance after.
Stress-laminated timber T-beam and box-beam bridges T-beam bridge, box-beam bridge, glulam, stress-laminated decks, timber bridge I. Drewniane mosty sprężane poprzecznie o przekroju teowym i skrzynkowym Praca magisterska w ramach międzynarodowych studiów magisterskich na kierunku MATHCAD FILE TO PERFORM AN ANALYSIS OF A BOX-BEAM Author: Agnieszka Gilun, Julia Meronk.
not specifically address detailed bridge design, it does serve as the basis for the timber design concepts and requirements used for bridges.
Notation of the NDS as the source of design requirements in this chapter reflects references in AASHTO that specify the NDS as the most current source of timber design information for bridges (AASHTO ).File Size: 1MB. DESiGN GUiDE FOR BRiDGES FOR SERviCE LiFE decisions made during the design and detailing of the bridge deck, fabrication and manufacturing requirement, quality of construction, and decisions concerning the level of inspection and testing performed during future operation and maintenance.
Design and Detailing Bridge-Deck. DESIGN OF LONGITUDINAL STRESS-LAMINATED DECK SUPERSTRUCTURES INTRODUCTION Longitudinal stress-laminated deck superstructures consist of a series of lumber laminations that are placed edgewise between supports and are compressed transversely with high-strength prestressing elements (Figure ).File Size: KB.
Title: Analysis of thermal change in stress-laminated timber bridge decks Source: FPL-RP, May ; Forest Products Laboratory Research Paper Author(s) Kainz, James A.; Wacker, James P.; Ritter, Micheal A.; Bishop, Stan Year: view abstract, download publication». Stress-laminated timber T-beam and box-beam bridges Master’s Thesis in the International Master’s programme in Structural Engineering AGNIESZKA GILUŃ JULIA MERONK Department of Civil and Environmental Engineering Division of Structural Engineering Steel and Timber Structures CHALMERS UNIVERSITY OF TECHNOLOGY Göteborg, Sweden Master’s Thesis.
products include I-joists, laminated veneer and glued laminated timber. However, the most familiar and well used is still sawn lumber. This course will provide the methodology for determining the allowable design values to use when designing sawn lumber components, such as beams, headers, trusses, floor joists, decking, etc.
Wood has been rediscovered as a material for bridges. Timber bridges are well suited for short- and medium-span applications to carry vehicle or pedestrian traffic (Fig.
7).Combining the advances in wood design, the use of glued-laminated timber, stress-laminated deck, and preservative treatment, permits wooden bridges that are economical, easy to construct, and which have a long service life. flat slab decks were viewed as the starting guide for SLT arch bridges.
In order to determine the structural behaviour and performance of this new design (stress-laminated timber arch bridge) as it would be the first bridge of this kind to be constructed, a half-scale model with 6m span, 1m wideAuthor: Geoffrey J H Freedman, Abdy Kermani.
The three bridges—Trout Road, Little Salmon, and Lampeter—are located in the commonwealth of Pennsylvania. The bridges are conventional stress-laminated wood decks constructed of sawn lumber (Fig ure 1). A summary of the characteristics for each bridge is presented in Table \. Note that the Little Salmon Bridge was unpaved and.
Introduction. Stress-laminated-timber (SLT) decks are an alternative to conventional building material for short- to medium-span bridges. The advantages include their low weight and excellent flexibility that enable a high prefabrication rate and quick assembly on by: 2.
The thermal stresses at the extreme temperatures in bridge deck pavements (BDP) was analyzed in the paper. The sample bridge deck and asphalt concrete pavements were analyzed. The maximum principal and shear stresses in the BDP at the wide range of temperatures were calculated using 3D finite element method.
The compared results showed a strong linear correlation between the BDP maximum Author: Hai Bin Li, Yan Ping Sheng, Qian Wang. The bridge depicted in Figure has no composite action between the concrete top layer and the timber trusses.
A slab-type wooden bridge is often produced by using stress-laminated decks; see Figure for the layout and Figure for a simple application. A new concrete-glulam prefabricated composite wall system: Thermal behavior, life cycle assessment and structural response thermal and environmental performances of a concrete-glulam prefabricated composite wall system.
Thermal bridges analysis in structures realized by panels of Type A, dimensions in centimetres. Author: G. Boscato, T. Dalla Mora, F. Peron, S. Russo, P. Romagnoni. Start studying Bridge Inspection 2: Bridge Materials. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Stress-Laminated, or Nail-Laminated timber. Built-Up timber members made up of. Glue-Laminated Timber 2. Stress-Laminated Timber bridge decks and slabs, concrete reinforcement, superstructure members.
Kainz Pdf, Ritter M () Effect of cold temperatures on stress-laminated timber bridge deck, in: J. Natterer and J. L. Sandoz (eds.) Proceedings of the 5th World Conference on Timber Engineering, Swiss Federal Institute of Technology Lausanne, Montreux, Switzerland, Vol 2.
pp 42–49Cited by: 4.Available in the National Library of Australia collection. Author: Kainz, Friedrich, ; Format: Book; 5 v. in 6 ; 25 cm.the bridge deck concrete under changes in temperature was examined in ebook laboratory ebook specimens cast with the decks.
The second task correlated the laboratory findings with measured responses in the bridges and examined the global thermal response of the decks. The laboratory investigation showed that concrete has a distinct nonlinear strain.