复杂环境下既有地下建筑改建过程中的换撑集成技术  

Integrated Technology for Support Replacement in the Process of Existing Underground Building Reconstruction Under Complex Environment

作　　者：张喨[1,2] 

机构地区：[1]同济大学,上海200092 [2]上海建工四建集团有限公司,上海201103

出　　处：《建筑施工》2017年第5期601-602,605,共3页Building Construction

摘　　要：背景工程位于城市中心,邻近运营中的地铁车站及区间隧道,周边又有历史风貌建筑和保护建筑,环境条件极其复杂。工程需对既有地下室进行改造并扩建,施工难度较大。通过使用型钢斜撑、型钢换撑、钢管换撑、临时钢筋混凝土梁、钢筋混凝土板带、钢筋混凝土牛腿等多种换撑集成技术,将周围建(构)筑物的变形控制在规定范围内,顺利完成施工任务,为类似工程积累了经验。One background project located in Shanghai downtown area is adjacent to the operating subway station and interval tunnel, and is also surrounded by historical and protected buildings and under extremely complicated environmental conditions. The existing basement needs to be reconstructed and expanded, therefore the difficulty of construction is relatively great. The deformation of surrounding buildings have been controlled within the specific range by multiple support replacement and integrated technologies like profile steel diagonal bracing, profile steel support replacement, steel pipe support replacement, temporary reinforced concrete beam, reinforced concrete slab, reinforced concrete bracket and so on have been adopted, which have made the construction task completed smoothly, and accumulated experience for similar projects.

关 键 词：地下室改造 换撑 复杂环境 地铁 深基坑 

分 类 号：TU753.3[建筑科学—建筑技术科学]