A novel model is created in this paper to realize the systematic evaluation of the mechanical properties and construction safety of the pipe roof support system. The pipe roof is split into supported area, unloading area, and stable area based on the load distribution characteristics. Combining a statically indeterminate beam (for the area of unloading) with an elastic foundation beam (supported area and stability area) takes into account the mechanical effect of the pipe roof. The new model can better reflect the load transfer mechanism and the stability of the tunnel face under the pre-support. It is demonstrated that the novel model, when compared to the existing theoretical solution, is more closely related to the measured and simulated results than typical engineering cases and is practical for field application. It can provide a new idea for the design of pipe roof support and the safety evaluation of field construction.
A Novel Model for Mechanics and Safety Calculation of Pipe Roof Based on the Load Transfer Mechanism
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 27 , 12 ; 5362-5376
2023-12-01
15 pages
Article (Journal)
Electronic Resource
English
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