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某医疗建筑位于南京市中心地带,地下3层,施工场地狭小,地下室施工采用逆作法施工。本文简要介绍该工程地下室结构与基坑支护协同设计的结构设计方法,重点介绍钻孔嵌岩灌注桩基础、地下室外墙(地下连续墙)、框架柱(竖向支承体系)、框架梁(水平支撑体系)的结构设计;对桩基的平面布置形式、灌注桩单一桩端后注浆技术、逆作法施工的节点设计与施工方法进行了讨论。
A medical building is located in the center of Nanjing City, three underground floors, a small construction site, the construction of the basement by reverse construction. This article briefly introduces the structural design method of the collaborative design of the basement structure and foundation pit support, with emphasis on the foundation of the hole-in-bored cast-in-situ pile, basement wall (underground continuous wall), frame column (vertical support system) Horizontal support system). The layout design of the pile foundation, the grouting technology after a single pile tip of grouting pile and the node design and construction method of construction by reverse engineering are discussed.