【作者】 王丰； 陈庆； 王春明； 卢珂； 彭璐； 樊志强； 朱丹；

【Author】 WANG Feng;CHEN Qing;WANG Chunming;LU Ke;PENG Lu;FAN Zhiqiang;ZHU Dan;Northwest Institute of Nuclear Technology;

【机构】 西北核技术研究所；

【摘要】 在花岗岩隧道侧壁设计了一种基于岩锚基础结构形式的提吊支撑系统。基础形式类似钢筋混凝土牛腿结构,通过牛腿承担上部荷载。利用2根承力锚杆联系牛腿与原岩,使单个岩锚基础承载力提升至80 kN以上。FLAC 3D数值计算表明,该结构形式充分利用了围岩的自承能力,且形式简洁,施工方便,承力效果好,实用性较强。更多还原

【Abstract】 Reinforced concrete corbels are designed as a support for the hoist system on the sidewall in the granite tunnel.The basic form is similar to the reinforced concrete corbels,with the upper load being carried by the corbel.Connect the foundation with the original rock through 2 load-bearing bolts,and it will increase the bearing of the reinforced concrete corbels up to 80 kN.FLAC 3 D numerical calculation shows that the foundation makes full use of the self-supporting capacity of the surrounding rock,and has the advantages of concise structure,convenient construction,good bearing capacity and strong practicability.更多还原