High-rise Core-tube Structure With Cantilevering Lightweight Steel And Finite Element Analysis

In recent decades, as China’s economy rapidly developed, and urbanization gradually accelerated, the contradiction between the shortage of residential land and the expensive cost of it has been more obvious. Designers are trying to find more better structure to ease that. Light steel structure was a new kind of structure, which has been gradually used in high-rise buildings, showing a series of advantages, such as light weight, good seismic performance, and convenient fabrication and installation.This paper presents a new type of structure, which is called high-rise core-tube structure with cantilevering light-weight steel. The structure is composed of angle steel dragon bone structure and core-tube cantilever structure. This paper changes the project-a22-layers frame-tube office building in Shenyang into high-rise core-tube structure with cantilevering lightweight steel, and researches its structural performance under wind loads and earthquake by using SAP2000. And then this paper can compare high-rise core-tube structure with cantilevering lightweight steel with frame-tube office building, in order to verify the feasibility of this new structure.The main contents are as follows:(1) Introduce the details of high-rise core-tube structure with cantilevering lightweight steel and angle steel dragon bone structure;(2) Build three models:framed-tube structure, core tube cantilever structure and high-rise core-tube structure with cantilevering lightweight steel, and compare their performance by using SAP2000software when they are under wind loads, horizontal seismic loads and vertical seismic loads;(3) Use SAP2000software to analysis the displacement and deformation of independent three angle steel dragon bone structure, which is under wind loads and horizontal seismic loads;(4) Compare the displacement and deformation of angle steel dragon bone structure when it is independent or combined with high-rise core-tube structure. The results in this paper will provide some theoretical reference for the design and research of high-rise core-tube structure with cantilevering lightweight steel and angle steel dragon bone structure.