Analysis Of The Earthquake-resistant Behavior Of Tall Building With Short Leg Wall On The Box Transition Floor

This dissertation focuses on researching the effect of earthquake-resistant behavior in tall building due to the box transition storey with short leg wall on it .In combination of actual project —Wuhan Fruit-Lake Edifice ,using finite Element software—ANSYS to create modal .Compare the performance of models with box transition storey which has different parameter(mass, rigidity, density, height) in the effect of earthquake, some advice are given for designing this type of structure. Main ideas this paper will expound are as follows:(1). In combination of actual project, create finite modal. Try to find the characteristic of displacement curve and distribution of shear-force by modal and dynamical analysis.(2). Calculate the modal using different finite software (SATWE, ANSYS), distill results separately, compare them, find the difference and the reason inducing it. (3). Research the box transition story; discuss the earthquake-resistant behavior of whole structure under three different transition factors—mass, thickness and rigidity. Find the effect of these three factors to the stories-drift, and then some general ideas are obtained to guide the designers.(4). Change the location of box transition story; try to find the influence of location to the capability of entire building under earthquake. As the feebly lateral stiffness of shell leg wall, when the position of box transition floor is lower, the period of structure will become long .But we can't be sure that this long period can bring smaller reaction as it will produce lower earthquake action, Because on the other hand the lateral stiffness of whole structure become weak, it can bring more exquisite reaction.(5). Try to find the disciplinarian of shear-force distribution and Story-drift along with the changes of transition story.By all theory academic analysis hereinbefore, some ways are suggested to control the displacement, and the relative ideal position of transition story in Wuhan Fruit-Lake Edifice is also educed.