天津市第一中心医院新址扩建项目大型深基坑内支撑拆除施工技术

Construction Technology for Demolition of Large Deep Foundation Excavation Support in New Site Expansion Project of Tianjin First Central Hospital

由于大型深基坑工程的用地限制和对周边建筑物保护有较高要求,钢筋混凝土支撑加格构柱临时支撑体系在施工中得到了广泛应用。为高效安全拆除混凝土支撑,加快地下室施工进度,对混凝土支撑拆除展开研究。以天津市第一中心医院扩建项目深基坑混凝土支撑拆除为例,详细介绍机械及爆破拆除流程和技术。

Due to the ground restrictions of large deep foundation excavation engineering and the high requirements for the protection of surrounding buildings,the temporary support system of reinforced concrete support and lattice columns has been widely used in construction.In order to efficiently and safely dismantle the concrete support and speed up the construction progress of the basement,this paper focused on the research on the demolition of concrete supports.This paper takes the concrete foundation demolition of the deep foundation excavation of the expansion project of the First Central Hospital of Tianjin as an example,and introduces the mechanical and blasting demolition process and technology in detail.