Shear rails are a cost-efficient solution to shear transfer at column/slab connections – eliminating conventional solutions, such as rebar stirrups, column capitals, and drop panels.
What is shear rail reinforcement?
Shear Rail Reinforcement Shear rails are a cost-efficient solution to shear transfer at column/slab connections – eliminating conventional solutions, such as rebar stirrups, column capitals, and drop panels.
What is punching shear stud rails?
Stud Rails. Punching shear is an especially important design consideration for relatively thin slabs supported by columns. Thin slabs require additional reinforcement at the slab-column connections to resist punching shear and prevent the columns from ‘punching’ through the slab.
What is an HDB shear rail?
HALFEN HDB shear rails are supplied as system elements, for short delivery times, and as complete elements, which are manufactured to measure on demand. They are preferably put in from the top after laying the flat slab reinforcement.
What is a stud rail?
Stud rails are a steel reinforcement system that allows flat slabs to carry increased punching shear loads with a minimum of additional labor and expense. Specially designed studs are welded to steel straps that are then secured to the formwork around each column.
What is the purpose of a stud rail?
Stud Rail is a double-headed stud anchor (DSA) reinforcement system, typically used for concrete deck-to- column connections. The system is designed to transfer the load further into the concrete deck, create a larger shear area around the column, and resist punching shear forces.
What are shear links?
Shear links are provided to carry the shear forces induced by the applied loads on structural elements. The most wildly discussed element connected with shear links is the concrete beams. There are no beams without links though other elements could skip providing links as the design requirements.
What is punching shear?
Punching shear arises when a concentrated load is applied to a small area of a slab or, most commonly, the reaction of a column against a slab. The resulting stresses are verified along defined control perimeters around the loaded area.
How do you install a stud rail?
0:441:27Mounting Rail Into Studs | freedomRail | OrganizedLiving.com - YouTubeYouTubeStart of suggested clipEnd of suggested clipSystem strength now drill pilot holes into studs every 16 inches using a 5/32 inch drill bitMoreSystem strength now drill pilot holes into studs every 16 inches using a 5/32 inch drill bit position the rail and drive the screws through the holes directly into the studs.
What is the difference between links and stirrups?
Steel links or stirrups are square or rectangular structures made by bending the rebar to form a ring like structure. These links are used along with steel rebar to make reinforcement beams or pillars. Stirrups help resist shear force which acts perpendicular to the structure of the RCC beam.
What is shear reinforcement?
What is shear reinforcement? Shear reinforcement is designed to resist shear forces in excess of the shear strength of concrete. They are provided in forms of vertical or inclined stirrups or longitudinal reinforcement bent up at 45 degrees at locations where they are no longer needed to resist bending.
What causes shear failure?
Shear failure occurs when the beam has shear resistance lower than flexural strength and the shear force exceeds the shear capacity of different materials of the beam. A shear load is a force that tends to produce a sliding failure on a material along a plane that is parallel to the direction of the force.
How do you prevent shear failure?
To prevent brittle shear failure, there are many available methods that could be used to strengthen short columns such as using reinforced concrete jacketing, steel jacketing [5] or using carbon fiber reinforced polymer (CFRP) [6].
What causes shear force?
Shear force is an internal force in any material which is usually caused by any external force acting perpendicular to the material, or a force which has a component acting tangent to the material.
Can stud rails be installed upside down?
A stud rail system can be designed for all column shapes (rectangular, circular, L-shaped, etc) and loca- tions (edge, corner, interior, etc). They can be installed either top down or bottom up – selection is based on user preference.
Whats it mean to be a stud?
Slang. a man who is notably virile and sexually active. a handsome man with an attractive physique; a hunk. a young man.
How do you cut studs?
You could do two 1.75" cuts or one 3.5" cut depending on how comfortable you are with the saw. Just make sure you don't cut through the opposite wall. Cut your 1/4" cuts two feet apart and then cut out the strip between them. Make sure there's no wiring going through the stud.
What is shearing in earthquake?
An S wave, or shear wave, is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.
What is an example of a shear force?
Scissors A pair of scissors is a classic example to demonstrate shear force. When an object, for example, a piece of paper is placed between the two metal blades of a pair of scissors, it gets divided into two parts only because of the shear force.
What are the types of shear connectors?
There are various types of shear connectors being used in composite beam such as headed stud, perfobond ribs, t-rib connector, oscillating perfobond strips, waveform strips, t-connectors, channel connector and non-welded connectors [9].
What is shearing in rocks?
In geology, shear is the response of a rock to deformation usually by compressive stress and forms particular textures. Shear can be homogeneous or non-homogeneous, and may be pure shear or simple shear.
Peikko for Designers
Your journey to faster, safer and more efficient design starts with a free Peikko Designer ® download. Use the software to select the most suitable Peikko product for your structure.
Peikko for Designers
Your journey to faster, safer and more efficient design starts with a free Peikko Designer ® download. Use the software to select the most suitable Peikko product for your structure.
LATERAL CYCLIC DEFORMATION TEST
In cooperation with King Mongkut University North Bangkok, we have conducted lateral cyclic deformation test with full-scale post-tensioned flat plate reinforced with shear stud rail. This experiment reveals superior ductility of slab-column joint beyond 8% drift ratio.
FINITE ELEMENT SIMULATION OF SHEAR STUD RAIL-CONCRETE INTERACTION
As part of our research, a Finite Element Analysis model for shear stud rail and concrete slab is studied to examine the level of effective stress occurring in shear stud rail during slab punching. The analysis results give useful information to dimensioning stud head size and effect of stud spacing.
PUNCHING SHEAR ANALYSIS MODEL
This video shows Finite Element Analysis of a prototype concrete slab subjected to punching force. The effective stress is plotted to indicate the area where shear stress concentrates around column.
PT-PUNCH SOFTWARE
PT-PUNCH is our in-house software for automated design of punching shear reinforcement. Developed in 2015 on .NET 4.0 framework, it can help our engineers to design punching shear reinforcement with time-saving and precision.
NONLINEAR FINITE ELEMENT ANALYSIS
This video shows the analysis of concrete slab subjected to lateral cyclic deformation. It reveals higher level of VM stresses in shear stud rail close to column face than those at distant locations. Also we found that high stress concentration occurs at stud head as the slab has deformed.
HDB-Z punching shear reinforcement for foundation slabs and foundations
The HALFEN HDB-Z punching shear reinforcement now allows an even more efficient and economic design of foundation slabs and single foundations. Due to the specially designed shape multi low-slip anchorage points in the concrete a component reinforced with HDB-Z up to 100 % more load capacity than a foundation without punching shear reinforcement.
The HDB anchor rail as shear reinforcement
The HDB-S anchor rail consists of double headed anchors (B500 ribbed or smooth) with swaged heads. A mounting bar that is secured by tack welds on the anchor heads, connects the individual anchors to the HDB-S rail. HDB S rails can have up to 10 anchors, which are preferably used from the top for laying the surface reinforcement.
What is Punching Shear?
One of the wonderful things about concrete is that it works in two (or even…
What is stud rail?
Stud rails are a steel reinforcement system that allows flat slabs to carry increased punching shear loads with a minimum of additional labor and expense. Specially designed studs are welded to steel straps that are then secured to the formwork around each column.
