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钢筋混凝土现浇墙、柱目前广泛采用组合钢模板和薄壁槽钢连杆。随着泵送混凝土的推广应用,混凝土浇灌过程中对模板的侧压力大大超过按传统方法施工的侧压力,一般可达5～7tf/m~2(本文中1tf≈10kN,下同) 为此,墙、柱模板必须进行认真的配板设计。模板计算通常是根据强度、变形(挠度)和连杆的整体稳定等控制条件分别计算出里外连杆间距、对拉螺栓的间距和直径,而对碟型扣盖等配套零件则直接选用,不做验算。近年来我们在一些工程上虽按要求进行配板设计,但胀模或跑模现象仍时有发生
Reinforced concrete cast-in-place walls and columns are now widely used in composite steel formwork and thin-walled channel steel connecting rods. With the popularization and application of pumped concrete, the lateral pressure on the formwork during the concrete pouring process greatly exceeds the lateral pressure of the conventional method. Generally it can reach 5-7 tf/m2 (1tf≈10kN in this article, the same below). The wall and column formwork must be carefully designed. The template calculation is usually based on the strength, deformation (deflection) and the overall stability of the connecting rod and other control conditions to calculate the distance between the outer and outer linkages, spacing and diameter of the pull bolts, and the direct selection of disc-shaped cover and other supporting parts, Do not check. In recent years, we have carried out the design of the fitting board according to the requirements in some projects, but the phenomenon of expansion mold or running mold still occurs.