岩溶岩石地基水平阻力系数研究及工程应用实例  

Study on Horizontal Resistance Coefficient of Karst Rock Foundations and Engineering Application Examples

作　　者：邓曦 赖庆文 申波[2] 王星星 杨通文 Deng Xi;Lai Qinwen;Shen Bo;Wang Xingxing;Yang Tongwen(Guizhou Architectural Design&Research Institute Co.,Ltd.,Guiyang 550081,China;Research Center of Space Structure of Guizhou University China Architecture Design&Research Group,Guiyang 550025,China)

机构地区：[1]贵州省建筑设计研究院有限责任公司,贵阳550081 [2]贵州大学空间结构研究中心,贵阳550025

出　　处：《特种结构》2024年第6期96-100,共5页Special Structures

摘　　要：岩溶岩石地基对超深超长地下结构底板的约束大于土质地基,设置抗浮锚杆后地基约束进一步增加也是造成超长地下结构抗裂及抗浮防水设计困难的原因之一。本文结合典型工程案例论述了岩溶岩石地基上高抗浮水条件下超深超长地下建(构)筑物混凝土裂缝控制设计要点,并开展试验验证了改进型滑动层释放岩石地基水平约束效果,得到该防水滑移层对应岩石地基的水平阻力系数。将试验数据结果运用于超30m埋深、超21m水头的贵阳市六广门大型超深超长地下污水处理厂结构裂缝控制设计中,达到了结构裂缝控制预期目标,可为今后岩石地基上超深超长地下结构的裂缝控制设计提供借鉴及参考。The constraints imposed by karst rock foundations on the bottom slabs of ultra-deep and ultra-long underground structures are greater than those of soil foundations.The installation of anti-floating anchors further increases these constraints,making crack resistance and anti-floating waterproof design more challenging.In this paper,a typical engineering case of ultra-deep and ultra-long underground structures on karst rock foundations is introduced and key points of concrete crack control design under high anti-floating water conditions are discussed.It also conducts experiments to verify the effect of the improved sliding layer in reducing the horizontal constraints of the rock foundation and obtain the corresponding horizontal resistance coefficient.The results are applied to the crack control design of the Liuguangmen ultra-deep and ultra-long underground sewage treatment plant in Guiyang City,which has a burial depth of over 30 meters and a groundwater level of over 21 meters.The expected goal of structural cracking control is achieved.This study provides reference and guidance for cracking control design of similar future ultra-deep and ultra-long underground structures on karst rock foundations.

关 键 词：裂缝控制 岩石地基 温度应力 水平阻力系数 滑移层 

分 类 号：TU473[建筑科学—结构工程]