Bearing characteristics and failure mechanism of a novel plate-short anchor structure for tunnel crack reinforcement. (May 2022)

• Record Type: Journal Article
• Authors: Zhou, Ping; Lin, Ming; Zhou, Feicong; Gong, Lun; Ao, Weilin
• Is Part Of: Engineering failure analysis. Volume 135(2022)
• Publication Date: 2022-05
• Subjects: Plate-short anchor structure -- Lining repair -- Mechanical mechanism -- Model test -- Bearing capacity; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2022.106160
• Languages: English
• ISSNs: 1350-6307

Abstract

Highlights: Novel method for Tunnel Crack Reinforcement. Plate-short anchor assembly structure. Destruction test of tunnel lining. Reveal the evolution process of the failure mode of the novel structure. Abstract: In order to solve the problem of tunnel diseases caused by lining cracking in mountain tunnels, this paper studies the crack repair technology of mountain tunnels. Based on this, this paper innovatively puts forward a new repair method of tunnel cracks—plate-short anchor assembly structure. Through literature investigation and theoretical derivation, the mechanical mechanism of the plate-short anchor assembly structure is analyzed, and the calculation formula of bearing capacity is proposed. The loading device for the bias pressure test of prototype components of tunnel lining is independently designed, and the destruction test is successfully carried out by simulating the stress mode of tunnel lining. By simulating the state changes of the plate-short anchor assembly structure under different cracking states, the ultimate bearing capacity under different working conditions is obtained, and the evolution process of the failure mode of the new structure is revealed.