A new pipe-roof construction method, the steel support cutting pipe method (SSCP), was proposed to improve the construction security and accuracy of pipe jacking as well as underground space usage. The pipe-roof method is one of the underground excavation methods which push multiple steel pipes into the soil, then connect the steel pipes horizontally to form a whole. The proposed structure’s failure mode and force characteristics were determined through theoretical analysis, and then its ultimate bearing capacity and influencing parameters were analyzed through laboratory experiments and numerical simulation. The research results show that the structure’s bearing capacity depends on the steel pipe’s buckling load; the structure’s failure mode is a result of the steel pipe’s buckling. The ultimate bearing capacity of the pipe-roof structure first increases and then decreases with the increase of the steel pipe chord height ratio. The ultimate bearing capacity reaches the maximum when the ratio is 0.33. In addition, the structure’s ultimate bearing capacity is positively related to the steel pipe wall thickness and the pipe section’s length. This can be obtained from the relationship curve showing that the steel pipe wall thickness should be selected according to the engineering requirements and that the pipe section’s length is preferably 2.3 times the diameter of the steel pipe in the construction design.
Analysis of Ultimate Bearing Capacity and Parameters of Steel Support Cutting Pipe Roofing Structure
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 2676 , 4 ; 348-366
2021-12-12
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Taylor & Francis Verlag | 2018
|An ANN Model for Predicting Level Ultimate Bearing Capacity of PHC Pipe Pile
British Library Conference Proceedings | 2010
|Study of the Ultimate Bearing Capacity of Concrete-filled Steel Tube K-Joints
Online Contents | 2019
|Ultimate Capacity Analysis of Concrete-Filled Steel Tubular Structure under Eccentric Compression
British Library Conference Proceedings | 2009
|