Experimental investigation of the compression-bending property of the casing joints in a concrete filled steel tubular supporting arch for tunnel engineering
Tunnelling and Underground Space Technology（2020）
Abstract
•Compression-bending tests of the CFST casing joints were carried out.•Failure is mainly caused by local stress concentration at the contact positions.•Compression-bending bearing capacity (Mu-Nu) formulas were fitted.•Influencing laws on the compression-bending capacity were obtained.
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Key words
Tunnel support,Concrete filled steel tubular arch,Casing joint,Compression-bending tests,Pure bending tests,Bearing capacity
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