Finite Element Analysis Of Wind Load On Top Connecting Three-tower Building

With the development of architecture engineering, people havemore requirements on the structure model and function. Compared withregular structure, the complex structure has no advantage on resistingwind load. There is no introduction to the shape coefficient of complexbuilding in the specification. So, in the structure design, the effect of windload gets more and more attention of people. It plays an important role inthe engineering. At the same time, it becomes very important to measurethe wind pressure on the surface of the building.This paper does a case study of the office building in Inner MongoliaRegion. The software ANSYS is used to build the finite element structuremodel according to its actual size. The different connection method isadopted between the structure and corridor, containing rigid connection、hinge connection and soft connection which is simulated by using theelement of Combin40. The surface of frame structure is covered with theANSYS surface element which is used to transfer the surface load as theFluid-structure interaction (FSI) layer. The flow field is set up based onthe WORKBENCH software platform. It simulates the flow over thestructure under steady state, using the flow analysis software CFX. Then,the result of wind load is applied to the structure, comparing the force indifferent cases of connection. For the flow filed, the numerical simulationis performed to measure the characteristic of flow over the structure indifferent directions. Finally, Surface pressure coefficient is received bycomputing, then it analyzes how the surface pressure coefficient changesin different wind directions. The results obtained in this paper can providea significant and practical basis for the design.