Rise Residential Base Temperature Crack Control Measures Apply Of Yu Dai Wan Project

In recent years, along with increasing height of the building, high-rise buildings has become increasingly thick floor thickness, due to the phenomenon of temperature stress cracks in engineering often. Therefore, the high-rise building construction technology of large volume concrete foundation slab research has important significance.Firstly, with the construction of massive concrete base floor high-rise buildings in the temperature stress and temperature deformation as the research object, the deformation temperature for the temperature stress and cracks in the concrete foundation slab of the main reasons this feature, researchers mass concrete temperature stress and change mechanism, seek to prevent the massive concrete floor construction technology cracks appear, to provide practical experience.Secondly, the study calculated the stress changes of mass concrete temperature and thermal stress analysis, explained the need for concrete temperature control and control theory based. Meanwhile, according to the characteristics of the formation of cracks in the concrete temperature by controlling the heat of hydration of cement, concrete constraints and to improve the structural design of measures to control the cracks. In addition, through the construction of temperature monitoring temperature changes grasp of concrete, to take effective control measures to avoid temperature cracks.Finally, specific projects construction practice, using the theory of mass concrete temperature crack prevention, to develop from pre-construction program, temperature control measures to be taken during construction and after completion of construction and other aspects of the conservation theory verification and take concrete measures inside and outside temperature control in less than 25 ℃, the cooling rate of not more than 1.5 ℃ / d, can guarantee the quality of concrete pouring. After completion of the project, good quality, harmful cracks occurred. The measures taken in this project in the construction and use of the theory is correct, it provides a valuable experience for the future to carry out similar work.