Ario Ceccotti - Academia.edu (original) (raw)
Papers by Ario Ceccotti
ABSTRACT Time-history response analysis could be obtained good information of seismic performance... more ABSTRACT Time-history response analysis could be obtained good information of seismic performance of timber structure building. Modelling that used of time history analysis usually based on the static test results of fasteners, walls and frames. Shaking table test is one of the effective methods to verify the reliability of model on dynamic behaviour. To verify the model's reliability, shaking table test should be carried out in consideration of the weight of test building, acceleration of each layer and internal story drift of displacement. To measure internal story drift is rather difficult and important factor, because the rigid tower for measuring displacement within the table as ordinary static loading test. CNR-IVALSA have been established SOFIE project on sustainable buildings used cross-laminated panels(X-LAM) and shaking table test on 7 story X-LAM building was carried out E-Defense in MIKI city on cooperation research with NIED, Shizuoka University and BRI in Japan. In this tested we could try two methods for measuring the internal story drift. One is displacement transducer setting in the building for measuring relative displacement between floor and ceiling, the other is optical displacement measuring system that optical transmitter is attached to the building and optical receiver is placed out of the table. In this report, internal story drift was compared with accumulated displacement measuring transducer in the building and difference displacement of table and optical transmitter. Optical displacement system is necessary to compensate the angle of roll, pitch and yaw on the table. Comparison with test results, long direction of building that mainly shear deformation shows good agreement of two measuring results, but short direction of building that include bending deformation shows optical displacement is larger than the accumulated displacement in the building.
A simplified method for the determination of the seismic behaviour factor q of timber buildings i... more A simplified method for the determination of the seismic behaviour factor q of timber buildings is presented. The proposed approach is a hybrid approach with element testing such as cyclic testing of wall elements combined with numerical modelling using the test results as input parameters for complete building models. The method combines non-linear-in-the-time-domain dynamic modelling of 2D or, better, 3D building models. The models are spring lumped mass models. The mechanical behaviour of the buildings is determined by the springs; all other components are rigid. The springs are calibrated on reversed cyclic testing data of large-scale elements such as shear walls. With this method, computationally efficient and stable models can be developed which can cover many different geometrical setups or mass distributions. Subjecting these building models to different earthquakes and increasing the seismic intensity until near-collapse, behaviour factors q for the simulated construction typologies can be derived.
Page 1. Rate Effects and Crack Dynamics in Mode I Fracture of Spruce Svetlana Vasic Post-doctoral... more Page 1. Rate Effects and Crack Dynamics in Mode I Fracture of Spruce Svetlana Vasic Post-doctoral Fellow, Trees and Timber Institute IVALSA, CNR, San Michele all'Adige, Trento, Italy ... 1765-1770 [6] Burdekin FM, Zhao W., Tkach Y., 2004. ...
Investigation report on the exceptional qualities of structures made of glued wood planks. Experi... more Investigation report on the exceptional qualities of structures made of glued wood planks. Experimental loading conditions are briefly reported. Dimensional limits and internal deformations are thus eliminated by comparison with plain wood structures.
学術講演梗概集. C-1, 構造III, 木質構造, 鉄骨構造, 鉄骨鉄筋コンクリート構造, Jul 31, 2007
Cross-laminated timber panels (X-lam) are more and more used as construction material for buildin... more Cross-laminated timber panels (X-lam) are more and more used as construction material for buildings. For a sound and reliable structural analysis in both static and cyclic loading situations, the behaviour of connections between wall panels has to be evaluated. As the Xlam panels are very rigid, these connections are determining significantly the mechanical performance of X-lam buildings. A typical in-plane wall-to-wall connection makes use of an LVL strip that is mounted as an inlay along the edges of two notched panels and is connected to these two panels by single shear fasteners, for instance self-drilling screws. As a consequence, the static and dynamic behaviour of this connection type differs from panels that are directly connected to each other due to the LVL strip and the subsequent double row of single shear fasteners. The LVL-inlay joints have to be modelled as a serial system of single shear fastener springs. Therefore, monotonic and cyclic tests on such connections have been undertaken in order to get input parameters for subsequent design models. Bending angles of fasteners have been measured. A comparison of the test results with dynamic measurements and calculations on a 3-storey building has resulted in the conclusion that in-plane wall-to-wall panel connections are an important factor in the structural behaviour of X-lam buildings, especially under dynamic loading such as earthquakes. Design procedures dealing with EC5 and EC8 concerning this connection type are discussed and their applicability is evaluated
Buildings made of cross-laminated wooden panels are gaining a broader acceptance even in seismic ... more Buildings made of cross-laminated wooden panels are gaining a broader acceptance even in seismic prone zones like the majority of the Italian territory. However, in Eurocode 8, the European seismic code for earthquake resistance of buildings, no recommendations are given regarding this constructive system. Neither for construction details nor for the seismic behaviour factor to be used in seismic design of this new typology of wooden buildings any information can be found.
学術講演梗概集. C-1, 構造III, 木質構造, 鉄骨構造, 鉄骨鉄筋コンクリート構造, Jul 20, 2008
ABSTRACT Time-history response analysis could be obtained good information of seismic performance... more ABSTRACT Time-history response analysis could be obtained good information of seismic performance of timber structure building. Modelling that used of time history analysis usually based on the static test results of fasteners, walls and frames. Shaking table test is one of the effective methods to verify the reliability of model on dynamic behaviour. To verify the model's reliability, shaking table test should be carried out in consideration of the weight of test building, acceleration of each layer and internal story drift of displacement. To measure internal story drift is rather difficult and important factor, because the rigid tower for measuring displacement within the table as ordinary static loading test. CNR-IVALSA have been established SOFIE project on sustainable buildings used cross-laminated panels(X-LAM) and shaking table test on 7 story X-LAM building was carried out E-Defense in MIKI city on cooperation research with NIED, Shizuoka University and BRI in Japan. In this tested we could try two methods for measuring the internal story drift. One is displacement transducer setting in the building for measuring relative displacement between floor and ceiling, the other is optical displacement measuring system that optical transmitter is attached to the building and optical receiver is placed out of the table. In this report, internal story drift was compared with accumulated displacement measuring transducer in the building and difference displacement of table and optical transmitter. Optical displacement system is necessary to compensate the angle of roll, pitch and yaw on the table. Comparison with test results, long direction of building that mainly shear deformation shows good agreement of two measuring results, but short direction of building that include bending deformation shows optical displacement is larger than the accumulated displacement in the building.
A simplified method for the determination of the seismic behaviour factor q of timber buildings i... more A simplified method for the determination of the seismic behaviour factor q of timber buildings is presented. The proposed approach is a hybrid approach with element testing such as cyclic testing of wall elements combined with numerical modelling using the test results as input parameters for complete building models. The method combines non-linear-in-the-time-domain dynamic modelling of 2D or, better, 3D building models. The models are spring lumped mass models. The mechanical behaviour of the buildings is determined by the springs; all other components are rigid. The springs are calibrated on reversed cyclic testing data of large-scale elements such as shear walls. With this method, computationally efficient and stable models can be developed which can cover many different geometrical setups or mass distributions. Subjecting these building models to different earthquakes and increasing the seismic intensity until near-collapse, behaviour factors q for the simulated construction typologies can be derived.
Page 1. Rate Effects and Crack Dynamics in Mode I Fracture of Spruce Svetlana Vasic Post-doctoral... more Page 1. Rate Effects and Crack Dynamics in Mode I Fracture of Spruce Svetlana Vasic Post-doctoral Fellow, Trees and Timber Institute IVALSA, CNR, San Michele all'Adige, Trento, Italy ... 1765-1770 [6] Burdekin FM, Zhao W., Tkach Y., 2004. ...
Investigation report on the exceptional qualities of structures made of glued wood planks. Experi... more Investigation report on the exceptional qualities of structures made of glued wood planks. Experimental loading conditions are briefly reported. Dimensional limits and internal deformations are thus eliminated by comparison with plain wood structures.
学術講演梗概集. C-1, 構造III, 木質構造, 鉄骨構造, 鉄骨鉄筋コンクリート構造, Jul 31, 2007
Cross-laminated timber panels (X-lam) are more and more used as construction material for buildin... more Cross-laminated timber panels (X-lam) are more and more used as construction material for buildings. For a sound and reliable structural analysis in both static and cyclic loading situations, the behaviour of connections between wall panels has to be evaluated. As the Xlam panels are very rigid, these connections are determining significantly the mechanical performance of X-lam buildings. A typical in-plane wall-to-wall connection makes use of an LVL strip that is mounted as an inlay along the edges of two notched panels and is connected to these two panels by single shear fasteners, for instance self-drilling screws. As a consequence, the static and dynamic behaviour of this connection type differs from panels that are directly connected to each other due to the LVL strip and the subsequent double row of single shear fasteners. The LVL-inlay joints have to be modelled as a serial system of single shear fastener springs. Therefore, monotonic and cyclic tests on such connections have been undertaken in order to get input parameters for subsequent design models. Bending angles of fasteners have been measured. A comparison of the test results with dynamic measurements and calculations on a 3-storey building has resulted in the conclusion that in-plane wall-to-wall panel connections are an important factor in the structural behaviour of X-lam buildings, especially under dynamic loading such as earthquakes. Design procedures dealing with EC5 and EC8 concerning this connection type are discussed and their applicability is evaluated
Buildings made of cross-laminated wooden panels are gaining a broader acceptance even in seismic ... more Buildings made of cross-laminated wooden panels are gaining a broader acceptance even in seismic prone zones like the majority of the Italian territory. However, in Eurocode 8, the European seismic code for earthquake resistance of buildings, no recommendations are given regarding this constructive system. Neither for construction details nor for the seismic behaviour factor to be used in seismic design of this new typology of wooden buildings any information can be found.
学術講演梗概集. C-1, 構造III, 木質構造, 鉄骨構造, 鉄骨鉄筋コンクリート構造, Jul 20, 2008