Construction Technology In Super Thick Planceer Of Mass Concrete Of High-rise Buildings

In recent years, along with the of development economy, the application of high-rise building construction is already and gradually extensive, and brought new challenge to construction building technique. As the building is getting higher and higher and the planceer is getting thicker and thicker, the planceer is often cracked by temperature stress in project practice. So that the research on the construction technique to the mass concrete of super thick planceer of high-rise building has got the very important engineering meaning.This dissertation mainly has a research on the control of temperature stress and temperature strain in super thick mass concrete planceer of high-rise building. Because the cracks of super thick mass concrete planceer of high-rise building is mainly caused by temperature stress and temperature strain, we have an emphasis research at the change of the temperature stress of super thick mass concrete planceer, study the construction technique how to prevent mass concrete planceer from appearing the crack's, and provide a viable fulfillment experience.Firstly this text studied the super thick planceer of mass concrete of high-rise building with ten characteristics comparing with the common reinforced concrete, according to the above characteristic from three aspect including the reinforcing bar project, the concretes project and the form project, elaborate the construction characteristics of super thick mass concrete planceer of high-rise building, have a detailed explanation of the big reinforcing bar link technique and the pump technique of the prepared concrete.The next this text is based on the appearance theories, according to the characteristics that the temperature dispersion of super thick mass concrete planceer of high-rise building primarily is an even difference in temperature and an even constringency, suppose the level shears are line with the displacement, adopting a big physical volume concrete of planceer in flexibility foundation for plank computing model, from theoretically deducing the difference in temperature of mass concrete contracting should basic formula of dint, and analysis the crack rule and the influence factor of mass concrete temperature contract, and bringing up the theory calculationMethod about temperature stress of mass concrete and the biggest whole method that sprinkle the length, at the same time according to basic formula of the temperaturestress of mass concrete and the concrete construction experience, bringing five technique measures to prevent the temperature crack of mass concrete. Finally this text takes the Xia'men post and telecommunications building 3.5metre thick planceer construction for example, elaborate how to make use of the above theories result in the mass concrete super thick planceer of high-rise building. Mainly from how to calculate the temperature stress of mass concrete, how to calculate the thickness of concrete heat preservation material, how to settle the concrete mix proportion, the reinforcing bar engineering, the form engineering, how to send and curing concrete, how to monitor mass concrete internal temperature. Through project practice and many examinations, it is proved again that the temperature stress calculate formula provided in the text is fit for the fact, it is proved again that five technique measures to prevent the temperature crack of mass concrete provided in the text is useful.