Research And Application Of Zhujiang New Town Super-tall Steel Tube Concrete Frame-core Tube Structure

With the rapid development of architectural technology, the tall buildings have sprung up in various large and medium-sized cities.People’s requirement for tall building has becoming higher and higher, however using the limited land and planning level to build more floor, more clear height of the contradiction is becoming more and more prominent. In such the severe situation, the pure frame structure or frame tube structure has already can not meet the requirement of high-rise structure.Thus, super-high concrete filled steel tubular frame-core tube structure system emerge as the times require,and increasingly get the favor of people.Steel tube concrete frame core tube structure belongs to the steel and concrete composite structure system, Making full use of the advantages of steel structure and reinforced concrete structure, which promote the tall building structure system to a new height, So this kind of structure system increasingly applied to the high-rise buildings. In this paper, we relying on the pearl river new city Gaode building engineering as an example,and researching the Concrete filled steel tubular frame core tube structure system construction technology.This will make a certain reference guide in the construction of similar tall building structure system.This article mainly research super-tall steel tube concrete frame core tube structure system of comprehensive construction technology.In order to study the structural system of steel structure and concrete structure construction of the main key technologies,we collect the relevant information and data, test analysis and research, field practice, the teacher’s guidance and so on.In super-high concrete filled steel tubular frame-core tube structure system is used in construction, including C85cast high in ultra high strength concrete self-compacting concrete, C50-C80high performance high pumping concrete.Through the preliminary calculation in the design of mixture ratio and the experiments in the process of adjustment drawing the construction mixture ratio, and successfully used in practical engineering.In addition this paper processing of steel members, hoisting, concrete compactness of super-high concrete pumping technology, ultrasonic and other related technical analysis for steel tube concrete frame core tube structure system integrated construction technology promotion.According to the steel pipe column structure fire resistance rating, we made an analysis and calculation on the thickness of steel pipe column protective layer and optimization of the technology that suitable for site construction. The comprehensive construction technology research will made great realistic guiding significance on similar engineering design and construction.This paper involved " In large cross section of steel pipe concrete columns external network with mortar construction (code:AHGF59-12)" and " High-rise core-tube coping and the hollow steel tube is of wide flat beam composite floor system construction (code:AHGF51-12)",which has gone through2012year review in anhui provincel construction methods, and obtain good social benefit and economic benefit.