某大空间地下建筑物在高水位地区的抗浮设计研究  

Anti-floating Design of A Large-scale Underground Structure in High Water Level Area

作　　者：徐静蓉[1] 郝晨东 

机构地区：[1]北京市水利规划设计研究院,北京100048 [2]延庆县水务局,北京102100

出　　处：《水利与建筑工程学报》2015年第5期195-199,共5页Journal of Water Resources and Architectural Engineering

摘　　要：在设计洪水位较高的场址内布置大空间地下建筑物时,抗浮设计十分重要,关系着工程的安全性和经济性。文中以某实际工程泵站为例,通过多种方案比选优化,确定采用抗浮抗滑复合受荷桩方案,结合国内外不同行业规范,对桩基承载力计算的几个关键参数进一步进行探讨分析。研究表明:抗拔桩方案是一种技术成熟、安全可靠、经济可行的抗浮措施,桩基承受拔力时基底下承受总体向上浮力作用的土体厚度不应计入桩身长度,侧向土水平抗力系数的比例系数m值是桩基水平承载力估算的重要参数。The anti-floating design is very important for the large-scale underground structures located in high water level areas ,because it is closely related to the safety and economical efficiency of the engineering .Based on an actual pump station engineering ,the solution of adopting anti-floating composite piles was determined after the comparison and opti-mization of various schemes .According to the requirements of the related domestic and international specifications ,fur-ther discussion and analysis of several key parameters of the pile capacity was carried out .The result indicates that the anti-floating and anti-slding composite pile solution has the advantages of mature technology ,safe construction and eco-nomical efficiency .In addition ,the thickeness of the soil that bears the floating force under the foundation shall not be included into the pile length ,and the value of the proportion coefficient m for the side soil lateral resistance coefficient is an important parameter for estimating the bearing capacity of the foundation pile .

关 键 词：大空间地下建筑物 抗浮设计 抗浮抗滑复合受荷桩 抗拔承载力关键参数 

分 类 号：TU92[建筑科学—建筑设计及理论]