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包裹挂网混凝土是加固水闸闸墩,船闸闸墙等直立结构物普遍采用的加固方式。如何保证挂网混凝土大面积平整光滑,具有良好的外观质量却非常困难。本文通过连江渠化枢纽黄牛船闸加固工程施工实践,介绍大型钢模板在挂网混凝土包裹浆砌石高墙施工中的应用。具体介绍混凝土浇筑分仓、模板选型、模板的锚固安装及使用效果。实践证明,由于大型钢模板表面平整光滑,自身刚度大,加上安装固定得当,使用大型钢模板不仅使混凝土表面观感好,而且也有利于混凝土振捣密实,对消除蜂窝麻面,减少混凝土裂缝发生,提高薄壁混凝土防渗性能都有明显的效果。大型钢模板安装与固定不需要脚手架,安装简单,耗工少,可以重复使用,其经济性十分明显。
Wrapping concrete is to strengthen the sluice gate pier, gate wall and other vertical structures commonly used reinforcement methods. How to ensure a large area of concrete hanging smooth, with good appearance quality is very difficult. In this paper, through the construction practice of strengthening the Yellow River lock of the Liaohe River diversion project, the application of large-scale steel formwork in the construction of the wall-mounted concrete masonry masonry walls is introduced. Specific introduction of concrete pouring warehouse, template selection, template anchoring installation and use of results. Practice has proved that, due to the smoothness of the large steel template surface, its own stiffness, coupled with the installation properly fixed, the use of large steel template not only makes the concrete surface look good, but also conducive to concrete vibrating compact, to eliminate honeycomb surface, to reduce the concrete cracks Occurrence and improve the anti-seepage performance of thin-walled concrete have a significant effect. Large steel template installation and fixed do not need scaffolding, easy installation, less labor, you can re-use, the economy is very obvious.