城市隧道下穿既有建筑的设计要点--以十八梯城市隧道为例  

作　　者：刘源保 骆成 鲁杰 

机构地区：[1]江西省交通投资集团有限责任公司赣州管理中心,江西赣州341000 [2]江西飞尚科技有限公司,江西南昌330052 [3]中交一公局集团有限公司,北京100024

出　　处：《科技创新与应用》2022年第18期100-102,106,共4页Technology Innovation and Application

摘　　要：城市隧道下穿既有建筑物具有较高的风险,因此精心规划和设计非常关键。文章以十八梯城市隧道工程为例,以数值模拟方法,对城市隧道下穿既有建筑物进行施工力学分析,考虑支护结构参数选定,计算隧道结构力学响应,建筑物的变形与发展。结果表明,合理的隧道开挖方法,适当的工序安排,超前预加固预支护的组合应用,可控制既有建筑物的有害变形。The urban tunnel underneath the existing buildings has a high risk,so careful planning and design is very important.Taking the 18-ladder urban tunnel project as an example,the construction mechanics of the urban tunnel under the existing buildings is analyzed by the method of numerical simulation,the selection of supporting structure parameters is considered,and the mechanical response of tunnel structure and the deformation and development of buildings are calculated.The results show that the harmful deformation of existing buildings can be controlled by reasonable tunnel excavation method,proper working procedure arrangement and the combined application of advance reinforcement and pre-support protection.

关 键 词：隧道 下穿建筑 支护结构 数值模拟 

分 类 号：U455[建筑科学—桥梁与隧道工程]