RC slabs can be subjected simultaneously to transverse loads and in-plane tensile forces, as it happens in top of continuous box girder bridges decks, the regions negative moments, or flat horizontal loads, produced by wind earth pressure. Tensile forces reduce shear punching capacity slabs. However, few studies have been carried out quantify this effect. With purpose, a mechanical model has de...

Abstract—Punching shear failure is usually the governing failure mode of flat plate structures. Punching failure is brittle in nature which induces more vulnerability to this type of structure. In the present study, a 3D finite element model of a flat plate with low reinforcement ratio and without any transverse reinforcement has been developed. Punching shear stress and the deflection data wer...

Peer-to-Peer (P2P) networks work on the presumption that all nodes in the network are connectable. However, NAT boxes and firewalls prevent connections to many nodes on the Internet. For UDP based protocols, the UDP hole-punching technique has been proposed to mitigate this problem. This paper presents a study of the efficacy of UDP hole punching on the Internet in the context of an actual P2P ...

Flat slabs are less labour intensive, simplify the installation of services and can accommodate more floors within restricted heights. However, the span influencing their design is the longest and they require more steel compared to two-way slabs. Other drawbacks of flat slabs are vulnerability to punching shear failure and higher deflections. To avoid punching shear failure drop panels, column...

Meso/microforming has gained much more attention in the last decades and is widely used as a reliable method to fabricate meso/micro-scaled metallic components. In this research, compound meso/microforming system which combines deep drawing, punching, blanking operations was developed multiscale central-punched cups by using brass sheets. The parts with three scales were produced sheets various...

Progressive collapse of reinforced concrete flat plate systems can be significantly influenced by the post-punching performance their slab–column joints under large deformations. This work presents a series static tests on four joint specimens with slab in-plane restraint. The effects different punching directions (upward and downward) embedded beams were studied. test results reveal that load-...

Due to the use of deicing salt, marine and offshore environments may cause rebar corrosion in RC flat-slab floor systems. This increases possibility punching shear failure slab–column connections. However, few research results are available for connections with corroded under eccentric load, which is very common realistic loading conditions. To fill this gap, 15 full-scale flat were fabricated ...

Punching/blanking is among the most important sheet metal manufacturing processes in mass production of metal parts and components in a great variety of industries. In recent years, a further understanding of the technological aspects of the punching/blanking process has been gained, offering the opportunity to integrate the new insights in the process control of the manufacturing process. This...

The ultimate strength of reinforced concrete slabs is frequently governed by the punching shear capacity, which may be increased with addition of traditional fitments such as reinforcing steel, headed studs or shear heads. In addition to these traditional methods of strengthening against punching, steel fibre reinforcement has proved to be an effective and viable alternative. The addition of fi...