Design And Finite Element Analysis Of Assembled Steel Structure Tower Crane Foundation

The tower crane is a kind of main construction machine in the mechanization and assemblage of modern industry and civil architecture. Along with the rapid development of building industry, tier and high buildings in big and middling cities have been increasing, the tower crane has been the main construction machine in the upright transportation of tier and high buildings. In practical application, the tower crane has prominent advantages as expediting the project, cutting time limit and reducing the cost for a project. The tower crane foundation is very important in the application of tower crane. But now there is no code in the design of tower crane foundation, each country widely adopts cast-in-situ reinforced concrete foundation in the world, the foundation has some defects as possessing big size, wasting abundant concrete and reinforcement, being one-off and polluting environment.In this dissertation, directing against the defects the cast-in-situ reinforced concrete foundation possessing, being based on the design idea of assembled steel structure, breaking through the inherent mode of traditional cast-in-situ reinforced concrete foundation, the design methods of new foundations are pointed out. This paper includes the several contents as followed:1) Introducing concepts of tower crane and its foundation, summarizing the study condition of tower crane foundation at home and abroad, pointing out the research trend of it, nailing down the main research contents and laying a course.2) By means of existing research results of tower crane foundation, the loads of tower crane foundation are calculated and analyzed under the different circumstances.3) Directing against the defects traditional tower crane foundations possessing, the design methods of four new foundations are pointed out, the structural analysis and the academic calculation are made. By analyzing and contrasting, the advantage of the assembled steel structure tower crane foundation are summed up.4) Based on the academic analysis, the assembled steel structure tower crane foundation is applied in the practical project. An practical example is given, including detailed calculating process.5) Calculating and analyzing the nodes between tower crane and foundation by the finite element method, considering the mechanical capability of partial nodes synthetically.6) Calculating and analyzing the dimensional and whole work capability by the finite element method, based on the calculating results, the horizontal displacement and stressdistributing of the beams on top of the piles is analyzed and the section sizes is optimized.7) In the end, what has been done in this paper is summarized, and the problems that need ulteriorly be studied are pointed out.