Application Research Of Integrated Climbing Internal Support Formwork System In Super Tall Buildings

Architecture development with each passing day,along with the social economy and the rapid growth of real estate industry,building height extending unceasingly,the past high-rise buildings,steel and concrete composite structure applied more widely.The construction process of steel frame-steel concrete core tube structure is complex,often the core tube is constructed first,and the outer frame steel structure is followed by construction.The traditional construction process can lead to the construction of the horizontal structure of the core tube,which cannot form an effective horizontal protection system.Subsequent construction affect the whole construction period,safety input,lagging in stair channel structure,there is no guarantee that fire evacuation requirements,how to realize the synchronous construction level structure and vertical structure is the emphases and difficulties of the high-rise structure construction.There are many non-standard layers in super high-rise buildings.If the high level model system is adopted,the utilization rate is low,and the non-standard layer template system is extremely low in utilization,and the material waste is more serious.Aluminum formwork support system's biggest support throughout the height of only 3.1 meters,when horizontal component adopt aluminum formwork support system,how to realize the height 5.4 meters for sanding aluminum is the emphases and difficulties of the template system design.This paper analyzes the super high-level template system.The information of traditional technology and new system stress is analyzed.And full cycle construction simulation.According to the calculation results,the economic benefit and the construction difficulty are the most easy.Climb touch system adopts steel template(with touch system since the climb up)+aluminum template(not the vertical structure and horizontal structure of climb)the way of combining avoided all adopt steel template construction template weight big,difficult construction,take up a lot of tower crane crane time problem.The horizontal structure and layer construction are guaranteed,and the staircase and vertical structure are synchronized.Once there is fire,there are reliable evacuation and rescue passageways.The non-standard components of non-standard layer are used in combination with aluminum template and steel formwork to avoid the waste of materials caused by the increase of non-standard components of steel aluminum formwork.Through the selection of reasonable template,to ensure the core barrel level structure and vertical structure synchronous construction,to avoid the reserved horizontal reinforcing steel bar embedded,reduced the level of structure after the construction of artificial and cost input,and ensure the construction quality,time limit for a project as a whole.4.By deepening the design and using the high plate method,the problem of high change of non-standard layer is solved effectively.Aiming at 5.4 meters height,the independent support systel can be achieved by increasing the diameter of the vertical bar and the wall thickNess to reduce the horizontal bar.Through pin,pin stable connection,square steel trunking,climb frame body tilt,Yang Angle reinforcement position compensation template and variable cross-section is applied to solve effectively the node reinforcement,wall such as non-uniform shrinkage problem.In conclusion,outside to climb inside the combination system formwork system effectively solves the tall building in a series of problems existing in the construction process,and achieved good economic benefit,provides the reference for future engineering practice.