Steel pipe sheet negative ring structure and optimal design thereof

Abstract

The invention discloses a steel pipe sheet negative ring structure and an optimal design thereof. The steel pipe sheet negative ring structure comprises a steel pipe sheet negative ring comprising five steel pipe sheets. The invention relates to the technical field of steel pipe sheet negative rings. The steel pipe sheet negative ring structure and the optimal design thereof are provided. After soil pressure is applied to the steel pipe sheets at different optimized parts, the stress condition of the circumferential bolt group is changed between 11 MPa and 15 MPa. Therefore, the damage condition of the bolt is not considered. Commercial three-dimensional software and Abaqus simulation software are used for carrying out simulation analysis on structural stress distribution, displacement anddeformation conditions. Then the structural layout of the steel pipe sheets is optimized, the purposes that the structure is more reasonable, and the safety requirement is guaranteed are achieved, the whole structural optimization is designed and optimized on the basis of the principles of safety priority, practicability and economy, and the processes of machining, manufacturing, carrying, erecting, safe using and the like of the pipe sheets can be smoothly carried out.

Description

Technical field [0001] The invention relates to the technical field of steel tube sheet negative rings, in particular to a steel tube sheet negative ring structure and its optimized design. Background technique [0002] "Bridge shield method" (hereinafter referred to as "shield method") is a relatively advanced method of jacking culvert construction, which is based on retaining the traditional jacking culvert construction and roadside prefabrication technology of bridge and culvert structure, and jacking and supporting the structure The protection method has undergone major reforms. Open-cut trenching has been changed to underground excavation shield support. Subsurface excavation has reduced the impact of construction on driving. The shield is composed of steel columns, steel beams, shield shells, sub-shields, and hydraulic The propulsion system and the auxiliary mechanism are composed of six parts. The shield machine is assembled at the front end of the first section of the fra...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a negative ring structure of a steel pipe sheet and its optimized design, which solves the problem that the structure layout on the negative ring of a steel pipe sheet is relatively complicated and cannot take into account both practicability and economy

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