TALL BUILDING STRUCTURES TONGI UNIVERSITY considered.On the other hand.the capacity of the facilities of laboratory shall be taken into account. Micro-concrete and fine reinforcement is always used to build a model.These kinds of material and constructi on me nods have be dimension and reinforcement ratio is also determined by the similitude factor.Usually it spends 3 to 5 months to build one whole model The figure on the left shows the structural model of the Boco tested c which have r Elastic model can also be made of plastic and other materials.Those models shall keep elastic during test and the linear behavior will be measured by sensors. Shakine table tests For choosing suitable earthquake waves to input into the shaking table to excite the model,the soil type of construction site and the dynamic behavior of the be taker into account ing intens f each ea nquak waves vary from the step ep can dimensions such as strain displacement transducers and transducers are placed at critical and interesting places of the model. dtdrmulti- Th d thog e connection floor between towers are located at different levels. Rodrigo Martinez Arribas TALL BUILDING STRUCTURES TONGI UNIVERSITY Rodrigo Martínez Arribas Design and construction of model As stated previously, the focus of shaking table test is on the dynamic behavior and earthquake resistance capacity of the structures. Hence the main similitude factors must be strictly obeyed during design, while the dimension, reinforcement, mass and stiffness are also considered. On the other hand, the capacity of the facilities of laboratory shall be taken into account. Micro-concrete and fine reinforcement is always used to build a model. These kinds of material and construction methods have been maturely used in Tongji University, which are used to build nearly 50 models during last decades. The main structural members are entirely reproduced similarly, and the dimension and reinforcement ratio is also determined by the similitude factor. Usually it spends 3 to 5 months to build one whole model. The figure on the left shows the structural model of the BOCOM Financial Tower which have been tested on the shaking table. Elastic model can also be made of plastic and other materials. Those models shall keep elastic during test and the linear behavior will be measured by sensors. Shaking Table tests For choosing suitable earthquake waves to input into the shaking table to excite the model, the soil type of construction site and the dynamic behavior of the prototype structure shall be taken into account. During test, the exciting intensities of each earthquake waves vary from the frequently occurred earthquake to the seldom occurred earthquake step by step, and the exciting inputs can be one dimension or three dimensions. Sensors such as strain gauges, displacement transducers and acceleration transducers are placed at critical and interesting places of the model. It is found that the responses of multi-tower buildings have very complex behavior during earthquake action. The dynamic properties and the damage area are different if the position and the stiffness of the connection floor between towers are located at different levels