2011年2月
第4期
柔集
施工技术
CONSTRUCTION TECHNOLOCY
昆明新机场航站楼倒梯形清水
混凝土密肋梁施工技术
许小金，唐际宇，钟伟，唐锋
（中国建筑第八工程局广西分公司，广西南宁530022）
【摘要】昆明新机场航站楼工程采用例梯形清水混凝土密助梁，通过模板深化设计确保建筑结构美观。采取可靠的架间模板支撑体系，按照精心策划的主次架绑扎顺序兼顾钢筋绑扎和模板成型质量，解决了此异形板清水混凝土的施工难题。另外介绍施工中细部做法、混凝土瓷筑注意事项等，并得出质量标准，施工质量得到保证，并取得良好的经济效益。
【关键词］例梯形架；清水混凝土；密肋梁：倒退法
【中图分类号】TU755
【文献标识码】A
【文章编号】1002-8498（2011)04-0009-03
9
Construction Technology of Inverted Trapezoidal Concentrated Ribbed Beam with Fair-faced Concrete in Terminal Building of New Kunming Airport
Xu Xiaojin, Tang Jiyu, Zhong Wei, Tang Feng
(g Abstract: Based on the project of New Kunming Airport Terminal Building, detailed design of formwork is done to ensure that the inverted trapezoidal concentrated ribbed fair-faced concrete beam looks well. By adopting the stabled formwork supports system between beams and the reasonable sequence of colligation between main and secondary beams, considering the quality of assembling reinforcement and formwork molding,the construction difficulty of special-shaped fair-faced concrete beam is solved. Meanwhile,the detailed practice in construction and attention points for concrete pouring are also introduced. Furthermore quality standard is put forward. The construction quality is ensured. Good economic benefi is achieved.
Key words: inverted trapezoidal beam; fair-faced concrete; concentrated ribbed beam; regradation method
1
工程概况
昆明新机场航站楼到达大厅、行李提取大厅和
部分候机大厅设计为清水混凝土，其水平梁板结构采用较为罕见的倒梯形清水混凝土梁板，其梁高 800.1200mm，梁底宽300mm，密助梁中心距1.5m，梁侧与梁底呈82.5°，如图1所示。倒梯形清水混
凝土密肋梁板展开面积7.2万m，单层展开面积最高达4.3万m。线条多、造型复杂，施工难度较大。 2工程难点
国内采用的清水混凝土多为墙、柱等竖向构件，大面积水平结构采用清水混凝土的工程较少，而采【收稿日期】2010-12-01
【基金项目】中[风建筑T.释总公司科研项目（CSCEC-2009-7-28）
【作者篇介】许小金，中国建筑第八工群局广西分公叫总经理.高级 T群的，民明市大版桥镇中建股份比明新机场航站区A1合周段
650211,电话:(0771)5532732,E-mail;rrta7758@ 163.coo 万方数据
a b果板
图1清水混凝土果板剖面
Fig.1 Proflle of fair-faced concrete beam-slab
用倒梯形而非矩形的清水混凝土策更为罕见。由于