钢带加固技术在公路隧道病害处治中的应用

Application of Steel Belt Reinforcing Technology in Disease Treatment for Highway Tunnels

营运公路隧道衬砌开裂和厚度不足已成为衬砌通病,钢带加固由于其特有的优势,已成为此类病害处治的优先选择方法。以京港澳高速公路粤境某隧道为例,针对此隧道存在的衬砌厚度不足的病害状况和安全隐患,采用镀锌钢板和化学锚栓相结合的方法对此隧道进行了加固,加固后隧道未出现明显的应力应变波动和衬砌表观病害,加固效果良好。

Because of its unique advantages,the steel belt reinforcing has become the preferred treatment method for cracking and insufficient thickness of operation highway tunnel lining. In this paper,taking a tunnel in northern section of Beijing-Hong kong-Macao Expressway in Guangdong as an example,the reinforcing method of combining the galvanized steel and chemical anchor has been adopted,aiming at the security problems of insufficient thickness disease. Without apparent fluctuation and surface disease of lining after treatment,the reinforcing method has been proved to be effective.