预埋滑槽技术在城市轨道交通工程中的应用

Application of Pre-embedded Chute Technology in Urban Rail Transit

预埋滑槽技术是在钢筋混凝土结构上预埋钢质滑槽,用以安装固定机电设备系统的技术。以深圳地铁9号线盾构隧道区间工程为例,介绍了预埋滑槽技术方案,通过模型计算对比分析了管片开槽和不开槽情况下管片的受力情况,并探讨了预埋滑槽技术应用中的关键性问题。城市轨道交通系统中机电设备系统复杂,需要安装固定在钢筋混凝土结构上的设备和管线数量特别多,传统的打膨胀螺栓或钻孔植筋技术对钢筋混凝土结构本身破坏性大,影响结构的安全性和耐久性,因此,在城市轨道交通系统中推广应用预埋滑槽技术有特别重要的意义。

Pre-embedded chute technology is to embed steel chute on the reinforced concrete structure, so as to install a fixed electrical equipment. Taking the interval shield tun- nel project on Shenzhen metro Line 9 as the research tar- get, the embedded chute technology is introduced. Through model comparison, the forces of segment with and without slot are analyzed, the key issues in this technology is stud- ied. Sincethe electro-mechanical equipment system in urban rail transit is very complex, it has to be installed on the reinforced concrete structure with a large number of equip- ment and pipelines. The traditional ways of planting expansion bolt or drilling onthe reinforced concrete structure are destructive, directly harm the safety and durability of the structure, therefore, the application of embedded chute technologyin urban rail transit has special significance.