受隧道施工影响的刚性接口地下管线的沉降计算

Settlement Calculation Method of Rigid Connection Underground Pipeline Affected by Tunnel Construction

探讨了刚性接口地下管线受隧道施工影响下的沉降计算方法,通过与Takagi法、陈龙法对比,验证了该计算方法的合理性,并能直接应用于工程计算.分析了隧洞直径D、管隧间距(z0-zp)、管径d、壁厚t、管材弹性模量Ep、下卧层弹性模量Es、特征系数λ、地层损失率Vs等参数对管线沉降的影响特征,可为隧道施工中对地下管线的安全保护提供理论基础.

The settlement calculation method of rigid connection underground pipeline affected by tunnel construction was discussed. The rationality of the calculation method was proved by comparing with the Takagi method and Chen Long method, and it can be directly applied to the engineering calculation. The impact parameters on the pipeline settlement, such as tunnel diameter, distance from pipe to tunnel, pipe diameter, pipe wall thickness, pipe material elasticity modulus, substratum elasticity modulus, characteristic coefficient, stratum loss were analyzed to provide the theoretical basis for safety protection of underground pipeline in tunnel construction.