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现浇钢筋混凝土结构施工中,合理安排现浇柱、侧壁围箍间距,关系到钢模结构整体刚度和混凝土几何尺寸,还涉及到充分发挥围箍材料的力学特性,是提高支模质量和工效不可忽视的向题。混凝土在浇灌过程中,模板的侧压力与混凝土振动时的液化深度有关,而液化深度又与混凝土连续浇灌高度及振动方式有关,把混凝土浇灌时对模板所产生的侧压力作为一个定值而上下均匀安排柱、壁围箍间距是不符合模板受力实际情况的。针对上述问题,首先应确定混凝土连续浇灌速度(m/h),以求得最大侧压力值P_(max):
During the construction of cast-in-situ reinforced concrete structures, the spacing between cast-in-situ pillars and side wall hoops is reasonably arranged, which relates to the overall rigidity of the steel die structure and the geometric dimensions of the concrete. It also involves the full use of the mechanical properties of the hooping material to improve the quality of the dies. Ergonomic issues can not be ignored. In the process of pouring concrete, the lateral pressure of the formwork is related to the liquefaction depth when the concrete vibrates, and the liquefaction depth is related to the continuous watering height and vibration mode of the concrete. When the concrete is poured, the side pressure generated by the formwork is set as a fixed value. Evenly arranging the spacing between columns and wall hoops does not conform to the actual situation of force applied on the template. To solve the above problem, first determine the concrete continuous watering speed (m/h) to obtain the maximum lateral pressure value P_(max):