大型国际航站楼超长、大体积混凝土结构的跳仓法施工技术  

Construction Technology of Super Long and Mass Concrete Structure of Large International Airport Terminal by Sequence Method

作　　者：庞程程[1] 付敏 王刚[1] 陈华[1] 沈洁 PANG Chengcheng;FU Min;WANG Gang;CHEN Hua;SHEN Jie(Gen eral Con tractor of China Con struction Eighth Engi neeri ng Divisi on Co.,Ltd.,Sha nghai 201204,China)

机构地区：[1]中国建筑第八工程局有限公司总承包公司,上海201204

出　　处：《建筑施工》2020年第7期1169-1170,1177,共3页Building Construction

基　　金：大型空港综合交通枢纽扩建工程综合技术研究(2019-2-05)

摘　　要：以杭州萧山国际机场三期项目新建T4航站楼为背景,通过建立模型,对航站楼深基坑底板及超长结构楼板的跳仓分块施工进行了研究。分析了不同底板厚度及分块大小时混凝土内部应力变化对混凝土表面裂缝控制的影响。计算结果显示,基础底板及楼板采用跳仓法施工时,通过合理分块,可以有效地控制混凝土裂缝的产生,同时减少了后浇带的留设,避免了基础底板及楼板的渗漏隐患。Based on the background of the new T4 terminal of Hangzhou Xiaoshan International Airport Phase III project, this paper studies the sequential block construction of the deep foundation pit floor and super long structural floor of the terminal through the establishment of the model. The influence of internal stress variation of concrete with different thickness of base plate and block size on the surface crack control of concrete is analyzed. The calculation results show that the concrete cracks can be effectively controlled by reasonable block division when the base slab and floor slab are constructed by sequence method, and the retention of post-cast strip can be reduced at the same time, so as to avoid the potential leakage risks of the base slab and floor slab.

关 键 词：深基坑基础底板 混凝土裂缝 跳仓法 后浇带 模型计算 

分 类 号：TU755[建筑科学—建筑技术科学]