By Ida Näslund, Helena Johnsson (auth.), Simon Aicher, H.-W. Reinhardt, Harald Garrecht (eds.)
This e-book comprises the contributions from the RILEM overseas Symposium on fabrics and Joints in trees buildings that used to be held in Stuttgart, Germany from October eight to ten, 2013. It covers contemporary advancements within the fabrics and the joints utilized in sleek bushes buildings. concerning uncomplicated wood fabrics, the contributions spotlight the widened spectrum of goods comprising cross-laminated bushes, glulam and LVL from hardwoods and block glued parts. trees concrete compounds, cement bonded wooden composites and leading edge lightweight structures symbolize more and more hired possible choices for flooring, bridges and facades. with reference to jointing applied sciences, huge advances in either mechanical connections and fixed joints are provided. Self-tapping screws have created remarkable recommendations for trustworthy, robust in addition to ductile joints and reinforcement applied sciences. concerning adhesives, which represent the foundation of the jointing/laminating expertise of recent bushes items, prolonged innovations for tailored bonding recommendations must be said. except melamine-urea and phenolic-resorcinol adhesives, one-component-polyurethanes, emulsion isocyanate polymers and epoxies supply quite a lot of probabilities. The contributions facing experimental and numerical investigations on static, cyclic and seismic habit of buildings truly exhibit the improved strength of recent trees building for trustworthy and sustainable structures and bridges of the hot millennium.
The ebook is dependent in 9 thematic parts, being
II) Mechanical Connections
III) Glued Joints and Adhesives
IV) bushes and Concrete/Cement/Polymer Composites
V) Cyclic, Seismic Behavior
VI) Hardwood, converted wooden and Bamboo
VII) Cross-Laminated Timber
VIII) homes and trying out of Wood
Read Online or Download Materials and Joints in Timber Structures: Recent Developments of Technology PDF
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Extra resources for Materials and Joints in Timber Structures: Recent Developments of Technology
Splitting the beam after gluing has the advantage of minimising waste, since only two sides have to be planed and since the waste from the saw cut in general is less than the waste from planing. It was decided, based on the results from simple finite element analyses, to investigate orientations type A, B and D in the various test series. Lay-ups A and D were chosen since these are the most practical in production and lay-up B was chosen since the finite element analyses showed that orientation B would lead to less distortion of the cross-section.
Because of thhe experimental setup and the t effect of rotation, for large displacements the actuual horizontal displacement as measured by the laser sensor at constant height (aas shown on Fig. 4) differss slightly from the displacement of the actuator itsellf. Therefore, in order to compute the rotation angle we use the displacement valuue measured by the externaal laser sensor rather than the internal measure of thhe actuator stroke. The mom ment is derived directly from the load cell and the height at which the load is applied.
Thhe loading speed is 1 mm/ss, which allows keeping the test duration within a 330 minute span while avoidin ng possible dynamic effects. The internal load cell of the oil jack and an external laser displacement sensoor provide a measurement of o the rotation and moment in the joint. Because of thhe experimental setup and the t effect of rotation, for large displacements the actuual horizontal displacement as measured by the laser sensor at constant height (aas shown on Fig. 4) differss slightly from the displacement of the actuator itsellf.