Round Timber Bolted Joints with Steel Plates under Static and Cyclic Loading

2014 ◽  
Vol 627 ◽  
pp. 29-32
Author(s):  
Antonín Lokaj
Keyword(s):  
Fatigue Tests ◽  
Bolted Joints ◽  
Steel Plates ◽  
Dynamic Tests ◽  
Static Tests ◽  
Deformation Response ◽  
Timber Joints ◽  
Static And Dynamic Tests ◽  
Static And Cyclic Loading ◽  
Round Timber

Aim of this paper is in presentation of results of static and dynamic tests of round timber bolted connections with slotted – in steel plates. Round timber joints static tests in tension were made on pressure machine. Round timber joints multicyclic (fatigue) tests in tension were made on pulsator. Results of laboratory tests have been statistically evaluated and completed by graphical records of deformation response on loading. Samples of round timber bolt connections with slotted - in steel plates were tested for carrying capacity and deformation of a single tension – up to the failure of connection.

Carrying Capacity of Round Timber Bolted Joints with Steel Plates under Cyclic Loading

2013 ◽  
Vol 838-841 ◽  
pp. 634-638 ◽  
Author(s):  
Antonin Lokaj ◽  
Kristýna Klajmonová
Keyword(s):  
Cyclic Loading ◽  
Carrying Capacity ◽  
Laboratory Tests ◽  
Fatigue Tests ◽  
Bolted Joints ◽  
Steel Plates ◽  
Dynamic Tests ◽  
Deformation Response ◽  
Timber Joints ◽  
Round Timber

Aim of this article is in presentation of results of dynamic tests of round timber bolted connections with slotted in steel plates. Multicyclic dynamic (fatigue) tests in tension were made with round timber joints on pulsator INSTRON in laboratory of ITAM CAS Prague. Results of laboratory tests have been statistically evaluated and completed with graphical records of deformation response to loading.

Reinforced Round Timber Joints under Static and Cyclic Loading

2014 ◽  
Vol 893 ◽  
pp. 702-706 ◽  
Author(s):  
Antonín Lokaj ◽  
Kristýna Klajmonová ◽  
Vit Křivý
Keyword(s):  
Fatigue Tests ◽  
Bolted Joints ◽  
Steel Plates ◽  
Mechanical Reinforcement ◽  
Static Tests ◽  
Timber Joints ◽  
Static And Cyclic Loading ◽  
With Screws ◽  
Round Timber ◽  
Made In

Aim of this article is in presentation of results of static and cyclic tests of round timber bolted joints with inserted steel plates. At first, timber specimens were tested without reinforcement. Based on static tests results, mechanical reinforcement methods were proposed and tested: using modified washers and boost with screws. Rate of improvement in tensile strength was established for used reinforcement method. Static tests in tension were carried out on pressure machine EU 100 in laboratory of the Faculty of Civil Engineering VŠB-TU Ostrava. Round timber joints multi cyclical dynamic (fatigue) tests in tension were made in laboratory of ITAM AS CR Prague and in TRI Žilina.

Reinforced Round Timber Bolted Joints under Cyclic Loading

2014 ◽  
Vol 1020 ◽  
pp. 199-203
Author(s):  
Antonín Lokaj ◽  
Kristýna Klajmonová
Keyword(s):  
Cyclic Loading ◽  
Carrying Capacity ◽  
Laboratory Tests ◽  
Fatigue Tests ◽  
Bolted Joints ◽  
Steel Plates ◽  
Dynamic Tests ◽  
Bolted Connections ◽  
Timber Joints ◽  
Round Timber

Aim of this article is in presentation of results of dynamic tests of reinforced round timber bolted connections with slotted – in steel plates. Multicyclic dynamic (fatigue) tests in tension were made with round timber joints on pulsator. Results of laboratory tests have been statistically evaluated and completed with graphical records of carrying capacity of connections in tension corresponding to number of loading cycles.

scholarly journals Carrying Capacity of Round Timber Bolted Joints with Steel Plates Under Static Loading / Únosnost Svorníkových Spojů Kulatiny S Vloženými Ocelovými Plechy Při Jednorázovém Statickém Namáhání

2012 ◽  
Vol 12 (2) ◽  
pp. 100-105 ◽  
Author(s):  
Antonín Lokaj ◽  
Kristýna Klajmonová
Keyword(s):  
Carrying Capacity ◽  
Static Loading ◽  
Laboratory Tests ◽  
Bolted Joints ◽  
Steel Plates ◽  
Bolted Connections ◽  
Static Tests ◽  
Deformation Response ◽  
Timber Connections ◽  
Round Timber

Abstract Aim of this article is in presentation of results of static tests of round timber bolted connections with steel plates. Round timber connections tests in tension were made on pressure machine EU100 in laboratory of the Faculty of Civil Engineering VSB-TU Ostrava. Results of laboratory tests have been statistically evaluated and completed by graphical records of deformation response on loading.

Round Timber Bolted Joints with Mechanical Reinforcement

2013 ◽  
Vol 838-841 ◽  
pp. 629-633 ◽  
Author(s):  
Kristýna Klajmonová ◽  
Antonín Lokaj
Keyword(s):  
Tensile Strength ◽  
Civil Engineering ◽  
Bolted Joints ◽  
Steel Plates ◽  
Mechanical Reinforcement ◽  
Static Tests ◽  
Timber Joints ◽  
With Screws ◽  
Round Timber ◽  
Rate Of Improvement

This paper presents the results of static tests of round timber bolted joints with inserted steel plates. All round timber joints static tests in tension were carried out on pressure machine EU 100 in laboratory of the Faculty of Civil Engineering VŠB-TU Ostrava. At first, timber specimens were tested without reinforcement. Based on these results, mechanical reinforcement methods were proposed: using modified washers and boost with screws. These samples were also tested. Rate of improvement in tensile strength was established for used reinforcement method.

Round Timber Joints under Tensile Loading Perpendicular to the Grain

2014 ◽  
Vol 1065-1069 ◽  
pp. 1327-1330
Author(s):  
Kristýna Klajmonová ◽  
Antonín Lokaj
Keyword(s):  
Bolted Joints ◽  
Steel Plates ◽  
Truss Structures ◽  
Load Carrying Capacity ◽  
Test Results ◽  
Static Tests ◽  
Load Carrying ◽  
Calculated Load ◽  
Timber Joints ◽  
Round Timber

This paper presents the results of static tests of non-reinforced round timber bolted joints with slotted-in steel plates loaded perpendicular to the grain. This type of joints loading is particularly widespread in truss structures. Round timber test samples series were prepared to validate the behavior of a joint loaded in tension perpendicular to the grain. The joints samples were experimentally tested in the laboratory of the Faculty of Civil Engineering VŠB TU Ostrava. The test results were compared with the calculated load-carrying capacity of joints by Johansen’s yielding theory.

Round Timber Bolted Joints Reinforcement Methods

2014 ◽  
Vol 1020 ◽  
pp. 351-355 ◽  
Author(s):  
Kristýna Klajmonová ◽  
Antonín Lokaj
Keyword(s):  
Bolted Joints ◽  
Steel Plates ◽  
Bolted Joint ◽  
New Approach ◽  
Static Tests ◽  
Tension Tests ◽  
Tension Testing ◽  
With Screws ◽  
Round Timber ◽  
Rate Of Improvement

This paper presents the results of static tests of non-reinforced and reinforced round timber bolted joints with slotted-in steel plates. In this article, a new approach to the reinforcement of round timber bolted joints is presented. Based on results from tension tests of timber bolted joint samples, reinforcement methods were proposed. From these, modified washers and boost with screws were chosen for further tension testing. Results were compared to unreinforced ones and rate of improvement established.

Reinforcement Possibilities of Round Timber Bolted Joints

2014 ◽  
Vol 1082 ◽  
pp. 359-364
Author(s):  
Kristýna Klajmonová ◽  
Antonín Lokaj
Keyword(s):  
Tensile Strength ◽  
Civil Engineering ◽  
Bolted Joints ◽  
Steel Plates ◽  
Mechanical Reinforcement ◽  
With Screws ◽  
Test Result ◽  
Round Timber ◽  
Rate Of Improvement

In this article the results of round timber bolted joints with inserted steel plates tests are presented. First, unreinforced round timber specimens were tested. Mechanical reinforcement by using modified washers, steel bands, BOVA plates and boost with screws of round timber specimens based on test result was then proposed. Reinforced specimens of various densities were then tested and rate of improvement in tensile strength was established for each of five proposed reinforcement methods. Tests were carried out on EU100 pressure machine in Faculty of Civil Engineering of VŠB-TUO Ostrava.

scholarly journals Effects of Loaded End Distance and Moisture Content on the Behavior of Bolted Connections in Squared and Round Timber Subjected to Tension Parallel to the Grain

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5525
Author(s):  
Antonin Lokaj ◽  
Pavel Dobes ◽  
Oldrich Sucharda
Keyword(s):  
Moisture Content ◽  
Carrying Capacity ◽  
Steel Plates ◽  
Load Carrying Capacity ◽  
Bolted Connections ◽  
Static Tests ◽  
Deformation Curves ◽  
Moisture Contents ◽  
Load Carrying ◽  
Round Timber

This article presents the results of static tests on bolted connections in squared and round timber with inserted steel plates. The experiment evaluates structural timber connections with different distances between the fastener and the loaded end at different moisture contents. Specimens were loaded by tension parallel to the grain and load–deformation diagrams were recorded. Fifty-six specimens with three different distances between the fastener and the loaded end, at different moisture contents, were tested. The results were statistically evaluated using regression analysis, complemented with load–deformation curves, and compared with calculations according to the valid standard for design of timber structures. A decrease in the evaluated load-carrying capacity with increasing moisture content was confirmed experimentally. A slight increase in the evaluated load-carrying capacity with increasing fastener distance from the loaded end was found.

Seismic assessment of rainscreen stucco systems

2008 ◽  
Vol 35 (4) ◽  
pp. 358-369
Author(s):  
Mehdi H.K. Kharrazi ◽  
Graham W. Taylor ◽  
Carlos E. Ventura
Keyword(s):  
Seismic Performance ◽  
Experimental Program ◽  
Dynamic Tests ◽  
Structural Behaviour ◽  
Static Tests ◽  
Frame Buildings ◽  
Air Space ◽  
Static And Dynamic Tests ◽  
Wood Frame ◽  
Frame Construction

This paper evaluates the comparative and absolute in-plane seismic performance of rainscreen and nonrainscreen stucco exterior cladding systems for residential wood frame construction in British Columbia. In this study, an experimental program including quasi-static and dynamic tests was implemented, comprised of 18 (in-plane) quasi-static tests and two dynamic tests. The principal parameters investigated in this study were type of strapping, type and length of strapping fastener, and type and length of lath fastener. All rainscreen specimens were constructed with a 20 mm air space. The overall conclusion is that both rainscreen and nonrainscreen stucco comply with the code requirements addressing the permissible drifts. Therefore, both stucco systems were found to improve the structural behaviour when used as the lateral resisting system of residential wood frame buildings. This paper concludes with recommendations for seismic refinements to current construction practices.

Sign in / Sign up

Export Citation Format

Share Document