Method for evaluating influence degree of double-line shield tunneling on adjacent buildings

Abstract

The invention relates to a method for evaluating the influence degree of double-line shield tunneling on adjacent buildings. The method includes the step: building a combined action mechanical model and a building deformation evaluating method. Building of the combined action mechanical model includes building of a coordinate system, building of a cooperation model and solution of a differential equation. The building deformation evaluating method includes setting and calculating of control quantity of the evaluating method and a building damage risk evaluating method. The method has the advantages that a mining area cooperation model method is referred, the complicacy of double-line shield construction is considered, ground loss generated by shield construction serves as a main reason forground surface settlement, and a cooperative simplified mechanical model of a shallow building foundation, a foundation and a structure above a double-line shield tunnel is provided and numerical analysis software 1stOpt is used for solving. According to the method, laws of deformation and internal force change of buildings in a shield tunneling area can be acquired.

Description

technical field [0001] The invention relates to a method for evaluating the degree of impact of double-line shield excavation on adjacent buildings, in particular to a method for evaluating the deformation of buildings related to the rigid body rotation of the building itself by controlling the deformation of the building with a control angle variable. Background technique [0002] In recent years, with the continuous development of my country's subway construction, double-line shield construction has become the mainstream form of urban subway tunnel construction. However, shield construction will inevitably cause disturbance and deformation of the surrounding soil, and cause great harm to adjacent buildings, especially when two-lane tunnels are constructed at the same time, the effects will be superimposed on each other, and the formation deformation will be more complicated . [0003] At present, scholars at home and abroad have mainly done related research on soil deform...

AI Technical Summary

Problems solved by technology

However, there are few studies on the impact of double-line shield construction on adjacent building structures, especially shallow foundation frame buildings, and there is a lack of research on the changes in bending moment and shear force of building structures.

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