预制钢筋混凝土柱校正后,经灌缝固定,但几天后用经纬仪测量垂直度,往往柱子又偏斜了。或向东偏,或向西偏,而且往往有一定规律,除了灌缝时的振动,固定柱子的木楔变形、松动以及风荷载等多方面的因素影响外,日照是决定柱子出现规律性的垂直度偏差的重要因素。同一切物体一样,钢筋混凝土柱也具有热胀冷 After the precast reinforced concrete column was calibrated and fixed by pouring, but with a theodolite measuring the verticality a few days later, the column was often skewed again. Or eastward or westward, and often with certain laws. In addition to the vibration during the filling, the deformation, looseness, and wind load of the fixed column, many factors influence the sunlight, which determines the regularity of the column. The important factor of the verticality deviation. Like the same cut object, the reinforced concrete column also has thermal expansion and contraction