大跨度地下厂房顶棚薄壁曲面混凝土施工技术

溪洛渡水电站地下厂房顶棚具有跨度大、质量要求高、工期紧、工序多、存在相互干扰和安全风险等特点,该工程采用施工台车,以拱形彩钢拱板作为混凝土浇筑的模板,加之相应的其他施工措施,成功地完成了施工任务,被评为溪洛渡水电站样板工程。

Techniques for Concrete Construction of Curved Thin-wall Ceiling Surface in Large-Scale Underground Powerhouse

Construction of the ceiling surface for the underground powerhouse in Xiluodu hydropower station is of large span, strict requirement in construction quality , tight schedule , multiple procedures , mutual interference between con-struction procedures and high security risks , etc.Nevertheless, the construction work was successfully accomplished and even rated as a prototype project .In this paper , the construction techniques are introduced , including the application of construction trolley , arched steel plate as the template for concrete pouring , and some other corresponding construction measures.