New Technologies for Construction of Medium-Rise Buildings in Seismic Regions: The XLAM Case

Ceccotti, Ario

doi:10.2749/101686608784218680

Cited by 145 publications

(84 citation statements)

References 1 publication

(2 reference statements)

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“…The test configurations were designed based on the typical screw connection details used in the three-storey SOFIE building which was tested in Tsukuba, Japan (Ceccotti 2008). In total twelve screwed CLT connections were investigated in shear and withdrawal directions (Table 1), including parallel (wall-wall and floor-floor) and orthogonal (wall-wall and wall-floor) panel-panel connections.…”

Section: Test Configurations and Experimental Setupsmentioning

confidence: 99%

“…Within this project, racking tests of wall panels with different layouts of connections and openings (Ceccotti et al 2006;Gavric et al 2014a) and pseudo-dynamic tests of a full scale one-storey building were performed (Lauriola and Sandhaas 2006). Next, shaking table tests of a three-storey (Ceccotti 2008) and a seven-storey building were carried out in 2006 and 2007, respectively, the latter one being conducted at the world's largest seismic testing facility (E-Defense) in Miki, Japan. Experimental tests provided excellent outcomes, as the buildings were able to survive a series of strong earthquake ground motions, such as Kobe in 1995, virtually undamaged, while at the same time demonstrating significant energy dissipation.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic behavior of typical screwed connections for cross-laminated (CLT) structures

2015

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This paper presents the results of an extensive experimental programme on typical cross-laminated timber (CLT) screwed connections conducted at CNR-IVALSA research institute. In-plane monotonic and cyclic shear and withdrawal tests were performed on screwed wall-to-wall, floor-to-floor and wall-to-floor CLT connections. Mechanical properties such as strength, stiffness, energy dissipation, ductility ratio and impairment of strength were evaluated. The experimental results showed good performance of CLT screwed joints under cyclic loads when ductile behaviour was achieved. Brittle response occurred only in cases where requirements for end and edge distances were not satisfied. The experimental characteristic shear strength and mean slip modulus of the connections were compared with values obtained using analytical design equations. The Eurocode 5 (EC5) formulas overestimated the characteristic strength values in some cases, while the Uibel and Blaß formulas specifically developed for CLT connections provided more accurate and conservative predictions. In cases where brittle failures were attained, the analytical values overestimated the experimental ones. This issue can be avoided when the requirements for minimum edge and end distances stated by EC5 are fulfilled. EC5 empirical formulas for the prediction of the screw connection slip modulus at serviceability limit state corresponded well with the experimental elastic values. The overstrength factor, which is of great importance in capacity-based design, was also evaluated, and a conservative value of 1.6 can be recommended for screwed CLT connections.

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Section: Test Configurations and Experimental Setupsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cyclic behavior of typical screwed connections for cross-laminated (CLT) structures

2015

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“…In the last decade, the seismic performance of CLT structures has been experimentally and numerically studied (e.g., [1]- [7]) and the results confirmed that the cyclic behaviour of metal connections has a key-role in the seismic behaviour of the building. The traditional seismicresistant connections, known as angle brackets and hold-downs, are composed of punched and cold-formed thin steel plates fastened to the panel with nails or screws.…”

Section: Introductionmentioning

confidence: 89%

Numerical Simulation of the Coupled Tension-Shear Response of an Innovative Dissipative Connection for CLT Buildings

Marchi¹,

Trutalli²,

Scotta³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Timber light frame walls sheathed with plywood or OSB, often referred to as 'lightframe construction', are widely used throughout the world (van de Lindt et al 2010;Sartori and Tomasi 2013). Cross laminated walls are extensively used in Europe (Ceccotti 2007;Fragiacomo et al 2011) and, recently, also in North-America (Amini et al 2013;Pei et al 2013) and Japan. This system generally uses a high number of load bearing walls and connections.…”

Section: Introductionmentioning

confidence: 99%

“…This system generally uses a high number of load bearing walls and connections. Shake table tests on cross-laminated timber buildings have shown that they are able to resist multiple earthquakes without being severely damaged (Ceccotti 2007;Hristovski et al 2013). However, recent trends in architectural design call for a reduction in the number of shear walls to allow for open spaces.…”

Section: Introductionmentioning

confidence: 99%

Cyclic behaviour of glulam shear walls with bolted connections

Wrzesniak

Fragiacomo

2016

Eur. J. Wood Prod.

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Dowels and bolts are well established types of fasteners for timber connections. They are fast and easy to assemble which made them become a common solution for joining heavy timber elements. This study investigates the feasibility of bolted connections as a possible anchoring solution for heavy shear walls under seismic loads. Fully reversed cyclic tests were performed on glued laminated (glulam) timber shear walls with un-reinforced and reinforced bolted connections. This study builds up on a previous research conducted on single bolted connections tested under quasi-static tensile loading. Testing an entire wall provides additional information on the performance of the connections under the actual load distribution (tensile and shear force) due to horizontal load which varies the shear force distribution in the fasteners compared to the case of a simple connection tested in tension. The influence of the fastener spacing and distance from the loaded and unloaded edge on the failure mechanism was investigated, as well as the effect of the reinforcement on the cyclic response of the connection in comparison to the unreinforced solution. The experimental study proved that conventional bolted connections are a feasible solution for anchoring shear walls to the foundation. Reinforcing the connection area with self-tapping screws resulted in reduced splitting, increased connection ductility and increased equivalent damping. However, bolted connections experience significant irreversible damage, namely plasticization of the bolts and timber crushing at the interface with the bolt, at the end of the seismic event.

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New Technologies for Construction of Medium-Rise Buildings in Seismic Regions: The XLAM Case

Cited by 145 publications

References 1 publication

Cyclic behavior of typical screwed connections for cross-laminated (CLT) structures

Cyclic behavior of typical screwed connections for cross-laminated (CLT) structures

Numerical Simulation of the Coupled Tension-Shear Response of an Innovative Dissipative Connection for CLT Buildings

Cyclic behaviour of glulam shear walls with bolted connections

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