北京电力隧道矩形顶管通用断面设计

General section design of Beijing electric power rectangular pipe jacking

结合北京电力隧道其他工法常用断面,考虑隧道内电缆敷设、运维检修、附属设施、结构安全、顶管机械等因素,依据北京电力隧道的埋深及水文地质等条件,采用理论计算与数值模拟的手段分析了矩形顶管的受力与变形,并确定了矩形顶管断面的形式、净空尺寸、结构受力及关节长度等关键参数,为评判电力矩形顶管技术的可行性提供依据,并且有利于电力矩形顶管隧道断面的设计。

In this paper,combined with the common sections of other construction methods of Beijing power tunnel,considering the factors such as cable laying,operation and maintenance,auxiliary facilities,structural safety and pipe jacking machinery in the tunnel,and according to the buried depth and hydrogeological conditions of Beijing power tunnel,the stress and deformation of rectangular pipe jacking are analyzed by means of theoretical calculation and numerical simulation,and the form of rectangular pipe jacking section is determined the key parameters such as clearance size,structural stress and joint length provide a basis for judging the feasibility of power rectangular pipe jacking technology.It is beneficial to the design of electric rectangular pipe jacking tunnel section design of power rectangular pipe jacking tunnel.