Partition piles are widely used in tunnel displacement control under excavation. However, the effect of partition has not been systematically studied, and centrifuge model test is lacking. In view this situation, design deformation adjacent existing caused by excavation terms dry sand foundation was carried out, a series optimization designs were out experimental process according to numerical ...

The field and laboratory investigations performed in the Frøya subsea road tunnel, constructed between 1998 2000, focus on degree of leaching undergone by steel fiber-reinforced shotcrete fresh saline groundwater. Shotcrete samples were extracted core drilling at two locations: middle tunnel approximately 150 m below sea level, near one portals. Leaching is only evident first location identifie...

Gingival recession is clinically manifested by an apical displacement of the gingival tissues, leading to root surface exposure. It is a concern for both patients and clinician for several reasons such as root hypersensitivity, erosion, root caries, and esthetics. Recently, new techniques have been suggested for the surgical treatment of multiple adjacent recession type defects. The current cas...

The paper investigates the long-term seismic behaviour of an underground reinforced concrete (RC) metro tunnel in Santiago, Chile, considering combined effects chloride-induced corrosion and cumulative, low-amplitude shaking on structure's performance. soil-tunnel response is evaluated with aid transient, nonlinear finite element analysis using a two-dimensional (2D) plane strain numerical mode...

Arthroscopic repair of the long head of the biceps (LHB) is performed to treat various biceps pathologies yet the choice between tenotomy or tenodesis remains controversial. Although tenotomy is simpler and quicker, tenodesis results in fewer complications, and there are several techniques available using various fixation devices and sites. This Technical Note describes an all-arthroscopic, sup...

Tunnel effect is a possible mechanism to explain the apparent large electric conductivity and nonlinear electric behavior of graphene-reinforced nanocomposites with polymer matrix. In this work, a numerical modeling framework is proposed to evaluate the effective electric conductivity in polymer composites reinforced with graphene sheets, taking into account the electrical tunneling effect, whi...

The problem of damage accumulation in fiber-reinforced concrete to structures supporting underground workings and tunnel linings against dynamic loading is insufficiently studied. mechanical properties were determined the mechanism destruction with different reinforcement parameters described. Concrete Damaged Plasticity model for at are based on results lab experiments. Numerical simulation co...