岩石地基超深超长地下结构裂缝控制设计

Cracking control design of ultra-deep and ultra-long underground structures on rock foundation

结合实际工程-贵州饭店和贵阳市六广门污水处理厂,对高抗浮水位条件下岩石地基上超深超长地下结构的裂缝控制进行了理论计算与分析,论述了其裂缝控制要点。通过采用优化设计后的防水滑移层以及可释放水平刚度的抗浮锚杆,释放地基水平约束,结合温度控制及补偿收缩混凝土的应用等措施,达到构裂缝控制预期目标,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。

Combining with the actual project-Guizhou hotel and Guiyang Liuguangmen Sewage Treatment Plant,this paper theoretically calculates and analyzes the cracking control of the ultra-deep and ultra-long underground structure on the rock foundation under the condition of high anti-floating water level,discusses the key points of cracking control.By adopting the optimized waterproof sliding layer and the anti-floating anchor that can release the horizontal stiffness,releasing the horizontal constraint of the foundation,combining with the measures of temperature control and the application of shrinkage-compensating concrete,the expected goal of structural crack control is achieved,providing reference for the cracking control design of ultra-deep and ultra-long underground structures on rock foundation in the future.