摘要
北京大兴国际机场航站区由航站楼核心区、指廊区、综合服务楼及停车楼等建筑组成,建筑面积大、体型复杂,5条轨道交通线从航站楼核心区下方穿过,并与地下综合换乘中心一体化设计,实现一站式换乘。为合理选择桩基础类型,并为桩基础的优化设计提供科学的依据,本文依据场地岩土工程条件,在北京大兴国际机场航站楼工程桩施工前,对5种不同类型桩基础进行现场试验,研究不同桩型、不同注浆工艺条件下,单桩竖向抗压极限承载力、桩体沉降、桩身内力,通过试验数据对比分析,最终确定了航站楼的桩基础形式。
The terminal area of Beijing Daxing International Airport is composed of the terminal core area, the corridor area, the comprehensive service building and the parking building. It has large building space with a complicated shape.Five rail transit lines pass under the core area of the terminal and they are in an integrated design with the underground comprehensive transfer center, which can realize one-stop transfer. In order to choose a reasonable foundation type of the terminal core area and provide scientific basis for the optimal design of pile foundation, according to the site geotechnical engineering conditions, the experimental investigations on five types of pile foundations were conducted before the pile construction of Beijing Daxing International Airport terminal. The ultimate bearing capacity, settlement and internal force of single pile under different pile types and grouting technology were discussed. Through the comparative analysis of the test data, the type of pile foundation in the terminal core area was finally determined.
作者
宿宁
赵源
SU Ning;ZHAO Yuan(Beijing New Airport Construction Headquarters,Beijing 102602,China;Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S02期1466-1469,共4页
Building Structure
关键词
桩基础
承载力
注浆
沉降
桩身内力
试验
pile foundation
bearing capacity
grouting
settlement
pile’s internal force
experiment
