广州某办公大楼地下室排水减压设计  

The Design of Drainage and Decompression in The Basement of an Office Building in Guangzhou

作　　者：郭远翔[1,2] 吴晨浩 沈雪龙[2] GUO Yuan-xiang;WU Chen-hao;SHEN Xue-long(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou Guangdong 510640,China;Architectural Design and Research Institute,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学土木与交通学院 [2]华南理工大学建筑设计研究院,广州510640

出　　处：《科学技术与工程》2020年第7期2845-2850,共6页Science Technology and Engineering

摘　　要：某项目办公大楼是一个综合体项目,由塔楼、裙楼以及地下室组成。在地下室抗浮设计中,采用排水减压设计方法。这一方法通过在地下室底板下层设置碎石疏水层与排水盲沟来将地下水引导至集水井,从而减小甚至消除地下水对底板的浮力作用。采用有限元软件PLAXIS进行分析,结果表明,地下室渗水量是可控的,满足相关规程的要求。对比排水减压设计与设置抗拔桩两类方法,结果发现,排水减压设计在经济上与工期上均具有较大的优势,且理论上在排水减压设计方法下,地下室底板不受浮力作用,更为安全。建议相似工程案例在进行地下室底板抗浮设计时可考虑排水减压设计方法。The office building is a complex project composing of a tower, podiums and basement. Drainage and decompression design method was adopted in basement anti-floating design. This method guided groundwater to collecting wells by setting gravel hydrophobic layer and drainage blind ditch under the floor of basement. Thus, the buoyancy effect of groundwater on the floor was reduced or even eliminated. The results of finite element software PLAXIS show that the seepage of basement is controllable and meets the requirements of related regulations. Comparing drainage and decompression design with installation of uplift piles, the former method has advantages in construction cost and period. Theoretically, the former method is also safer because the basement floor is not subject to buoyancy. It is suggested that the design method of drainage and decompression should be considered in the anti-floating design of basement floor in similar engineering cases.

关 键 词：地下结构 抗浮 排水减压 渗流 

分 类 号：TU463[建筑科学—结构工程] TU943.1[建筑科学—土工工程]