浅谈圆角梯形滚水堰施工技术

Discussion on the construction technology of rounded trapezoidal overflow weir

泗阳节制闸除险加固工程新建节制闸7孔,每孔均设置圆角梯形滚水堰。滚水堰既是高速水流过水部位,又是冲磨较严重区域,施工立模精度和混凝土质量要求比较高。本文结合泗阳闸滚水堰一次施工成型的工程实践,对其在模板选用和制作安装、钢筋制作安装、混凝土配合比设计、温差裂缝控制等各个环节的施工技术作了重点介绍。经技术创新和施工实践,圆角梯形滚水堰的堰型和质量得到了有效控制。

Seven sluices are built in reinforcement project of Siyang sluice. There is rounded trapezoidal overflow weir in every sluice. Overflow weir is not only the high-speed overflow part, but also a serious abrasion region. The accuracy of construction formwork and concrete quality requirements are relatively high. Combined with the one time molding engineering practice of Siyang sluice overflow weir, all aspects of the construction technology were introduced. Such as template selection, fabrication and installation, steel fabrication and installation, concrete mixture proportion design and temperature cracking control. By technical innovation and construction practice, the quality of rounded trapezoidal overflow weir has been effectively controlled.