A Study on the Influence of Section Steel Joints on the Stability of TRD Enclosure Structure
The TRD method with inserted H-shaped steel has gained widespread application due to its good applicability.However,the influence of section steel joints on the stability of TRD enclosure structure is rarely studied,so theoretical research on the TRD method remains incomplete.In this study,the excavation section of Nantong Rail Transit Project Line 2,Section 02,was taken as the analysis background,and the Midas GTS NX numerical calculation software was used to simulate and calculate the sectional splicing conditions of the joints at three different positions of the section steel,and determine the influence of joint position and degree of stiffness reduction on the stability of the sectional inserted steel TRD enclosure structure and the excavation stage of the foundation pit.Numerical simulation methods were used to analyze the deformation and stress changes of the heat-affected zone of the steel weld.The study mainly focused on the related issues of the sectional inserted steel,providing guidance for similar engineering projects.
sectional inserted steelTRD enclosure structurestability studyheat-affected zone
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