Take the maximum values for punching shear in robot and used punching shear spreadsheet from the concrete center, in your screenshot you have two cases, punching shear design for. Punching shear is a phenomenon in flat slabs caused by concentrated support reactions inducing a cone shaped perforation starting from the top surface of the slab. Pt design is a leading provider of posttensioning systems, structural solutions and cad detailing. Design for punching shear should allow for the effects of moment transfer at the columnslab junction. Ive always felt that there was a real opportunity in the software world for more engineer friendly punching shear reporting. Design example of punching shear in slabs eurocode 2. The overall depth of pile cap shall also be selected such that the effective depth of bottom. I know decon has a studrail design software, but it is pretty limited in what it can do and it really only does new design, not analysis of an existing conditions.
Ancon shearfix punching shear reinforcement system used within a slab to provide additional reinforcement around columns, ancon shearfix provides an ideal solution to the design and construction problems associated with punching shear related links. Punchingshear faq safe computers and structures, inc. Here, you may manually adjust any parameters to meet the actual conditions of the model. New decon studrail brochure and updated design software. Asdip foundation is a structural engineering software utilized by engineers for design of pile caps and concrete footings, such as spread footings, strap footings, combined footings, and wall footings, per the latest aci 318 provisions this foundation design software substantially simplifies timeconsuming calculations for structural engineering design.
One way shear is not checked by the program and additional hand calculation may be required if needed. If the design shear ved exceeds the shear capacity vrd,c the program. Aug 14, 2017 footing design includes two shear checks per aci 318. However, consideration of the factored axial load along with the corresponding applied factored moments is necessary for other footing design checks such as punching shear at the maximum loaded pile, oneway shear, and flexure. Design software in etaconform version concrete plant precast. Punching shear is a failure of reinforced concrete slabs subjected to high localised forces. Select the design punching shear design overwrites option to ensure that punchingshear perimeters and columnpier location types are as intended. The module automatically determines the governing punching load from the specified load. Does the program check punching shear around columns and piles.
Footing design includes two shear checks per aci 318. By simplifying slab reinforcement at column locations and eliminating column capitals, stirrup cages, or i beam shear heads, they enable efficient design and rapid. The design calculations check the foundation in flexure, plane shear and punching shear as appropriate. You can design slabs at internal, edge and corner columns by specifying.
Vcmaster is a software application for technical documentation specifically designed for engineers. Take the maximum values for punching shear in robot and used punching shear spreadsheet from the concrete center, in your screenshot you have two cases, punching shear design for edge and reentrant corners. For structures, the lateral stability of which do not rely on the frame action between the slab and columns and in which adjacent spans do not differ in length by more than 25%, the design punching shear may be obtained by enhancing v ed by 1. Structural engineering software is a major part of practicing structural engineers. Shearail design software introduction for punching shear solution. For the flat slab with the general arrangement as shown below, let us design the punching shear for column b1 given the following design information. Id love to see fem software that would do the following.
Foundation design software structural engineering software. Used within a slab to provide additional reinforcement around columns, ancon shearfix is the ideal solution to the design and construction problems associated with punching shear. Basic principles 9 14 pointload supported slabs 9 design concept 10. The punching shear analysis is directly linked to any joints that has been defined as a slab support of type column in the concrete tab of a joint properties. Design of reinforced concrete flat slabs for punching shear. Verification of the shear capacity at the control perimeters around a rectangular column. Pretty much every firm that ive worked with has had an internally developed, excel based post processor for punching shear. It has just been shown that the factored axial load alone is sufficient for the punching shear check at the column. Punching strength without shear reinforcement the punching shear strength of the concrete is not sufficient. Details name punching shear design calculation pages format xlsx size 1 mb download method direct download download. Slab modeling, analysis, and design procedures feature a suite of sophisticated tools and applications, couple with posttensioning, punching shear, and beam detailing, and integrate the influence of soils, ramps, columns, braces, walls rectilinear or curvilinear, and other interfacial elements. Create punching shear checks you can apply punching shear checks to flat slabs and foundation mats by using the add check command on the design tab.
Punching shear design calculation civil engineering. Punching shear is a phenomenon where a concentrated force on a slab causes a shear failure cone that punches through. Punching shear analysis of reinforced concrete flat plates. Overview punching shear calculation applies to columnsupported slabs, classified as twoway structural. Punching shear around columns and piles are checked in version 6. Jan, 2017 what is the concrete contribution to punching shear when shear reinforcement is present.
What is the maximum amount of nodes and load combinations. By defining the geometrical properties of a slab supporting joint, the program will determine the shear perimeter around the support. Please note, designs generated in any shearfix software versions prior to 5. Punching shear in safe 16 general discussion structural. Oneway shear checks are shown for illustration as twoway shear normally governs the design. This type of failure is catastrophic because no visible signs are shown prior to failure and commonly occurs in flat slab structures at column support points. Safe punching shear problem software issues structural. From the above discussion we can see that the providing the shear reinforcement is the best method to solve the problem of punching shear. Concrete design software frequently asked questions.
This easytouse program determines the optimum design of shearfix components and generates a printable data sheet and a dxf file of the specified layout. Max frank offer a punching shear reinforcement customised design program which automatically calculates the most costeffective design solution for individual site requirements to bs 8110 and ec2. Program for verification of punching shear resistance of concrete slabs according to en 199211 and en 19922. Punching strength with shear reinforcement firstly, one has to check if the design shear.
Tedds engineering library november 2015 tekla tedds user. Armata punching reinforcement is the first icc approved doubleheaded shear rail system made from deformed reinforced bars. Punching shear scia structural analysis software and. The program is able to analyse both plain and reinforced concrete structures.
Slabs and flat slabs lecture 5 19 th october 2016 contents lecture 5 designing for shear in slabs including punching shear detailing solid slabs flat slab design includes flexure worked example exercise punching shear. Punching shear how to design against punching shear forces. Jordahl expert software for punching shear reinforcement. Anyone know of a software that will account for varying slab thickness and openings around the column for calculating punching shear, particularly at the end of the studrails. The hdb elements with double headed ribbed studs, welded to a mounting rail, are used as shear and punching reinforcement. Although generally preceded by flexural failure, punching shear is a brittle failure mode and the risk of progressive collapse requires a higher safety class in structura. For the structural components consisting of slabs, it is necessary to perform shear design on the locations with concentrated load introduction, applying the. What is the concrete contribution to punching shear when shear reinforcement is present. You can design slabs at internal, edge and corner columns by specifying the distance from the support to the slab edge. Perhaps the punching shear check is the last step to consider in the design of the pile cap. Decon studrails are a proven, costeffective solution to resist punching shear at slabcolumn connections in elevated slabs and foundation mat slabs, as well as bursting stresses in posttension anchorage zones. For the analysis, a linearelastic model has been used. Punching shear designer, reinforced concrete slabs cads uk. With better material properties than studs from smooth bars, armata provides more efficient design against punching shear failure in flat slabs.
A number of factors may affect the modeling and formulation of punching shear. Pile supported foundation pile cap analysis and design. As stated in the safe design manual, and prescribed by aci 318 requirements, safe uses 2sqrtfc for shear links rebar and 3sqrtfc for shear studs. Punching shear failure could occur as a result of shear stress produced by transfer of shear. Tekla software solutions for advanced building information modeling and. If the design shear ved exceeds the shear capacity vrd,c the program computes the necessary shear links reinforcement. Punching shear is a phenomenon where a concentrated force on a slab causes a. Later on, hong guan 2009 applied the nonlinear layered finite element method lfem. Structurepoint, formerly the pca engineering software group, offers concrete design software programs updated to aci 31814 for concrete buildings, concrete structures and concrete tanks. Let us take a look at the image below an excerpt from a working. Lrfd steel girder superstructure design example lrfd. Reinforced concrete structural software includes programs for column design pcacolumn, beam design pcabeam, slab design pcaslab, wall design pcawall, mat design pcamats, foundation design.
The system consists of doubleheaded studs welded to flat rails, positioned around the column head or base. Punching shear scia structural analysis software and design. Halfen hdb shear rails are supplied as system elements, for short delivery times, and as complete elements, which are manufactured to measure on demand. Also, it is possible to apply a concentrated punching load to a slab manually. Structural analysis software rfem and rfpunch pro addon module for punching shear design of reinforced concrete surfaces acc.
Punching shear design according to eurocode 2 in rfem. Punching shear design structural engineering software. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Design of slab section in punching shear according to eurocode 2 6. This software tutorial shows how simple it is to use the shearail design software for punching shear design. The ancon design program simplifies the specification and ordering of a shearfix system.
Aug 14, 2018 it will show you how to consider the punching shear checks using the safe program and the punching shear capacity checks as specified by the aci code. Easy to use application for analysis of punching shear of reinforced concrete. Punching stresses generally arises when a concentrated load is applied to a small area of slab. Punching shear checks in pile caps the structural world. The jordahl expert punching shear reinforcement jda is used to design flat slabs, ground slabs, precast slabs and footings. Mar 27, 2018 the design calculations check the foundation in flexure, plane shear and punching shear as appropriate. For structures, the lateral stability of which do not rely on. The punching shear design must be performed for slabs and floor slabs or foundations, taking into account the slab topology available around the considered.
Like footings, it is common practice not to use shear reinforcement in pile caps. Punching shear calculations are provided for columnspedestals that land on concrete slabs. Compared to manual calculations, it helps us to achieve our read more. Halfen punching shear reinforcement and shear reinforcement halfen hdb punching shear and shear reinforcement 4 7 hdb punching shear reinforcement 5 hdbs shear reinforcement 6 product overview 8 halfen hdb as punching shear and shear reinforcement 8 calculation. The design program requires the following information to be inputted. The latest version of ancons shearfix software is 4. These tools help us to calculate, investigate, analyze and design the different structural design projects on hand. This easytouse program determines the optimum design of shearfix components and generates a. The punching shear design must be performed for slabs and floor slabs or foundations, taking into account the slab topology available around the considered punching point. Punching shear reinforcement on slab 39 one way joist 41 twoway slab analyzed by the direct design method 47. Create punching shear checks tekla structural designer. Ancon shearfix punching shear reinforcement system used within a slab to provide additional reinforcement around columns, ancon shearfix provides an ideal solution to the design and construction problems associated with punching shear.
Usually when we design foundation safe take wall reactions as a beam with intermediate points and shows nc as punching shear ratio. Up to four layers of longitudinal slab reinforcement. The unique software concept integrates all structural design and cad software. Top 5 structural engineering software that you should. The decon studrail punching shear reinforcement brochure has been updated and is packed with useful data including sample calculations, materials. I am unable to understand what is happening when i import a roof slab.
So for effective control of punching shear the design is necessary. Based in ho chi minh city sai gon, vietnam, our team of draftsmen, engineers and designers have partnered with the best architects, engineers and project managers on iconic building projects in the uk, australia, dubai, vietnam and around the world. Universal interfaces guarantee easy data transfer, so that the output of all programs can be transposed. Punching shear software structural engineering general. If punching ratio of column on raft foundation 30 thick is 1. Punching shear how to design against punching shear. In accordance to such research, the lfem is an effective tool in global analysis and suitable for the design of reinforced concrete slabcolumn systems with the aim of. In the course of the punching shear design according to en 199211, it must be checked that the acting shear force v ed does not exceed the resistance v rd. Ptdesign is a leading provider of posttensioning systems, structural solutions and cad detailing.
As we all know, punching shear is a concentrated load causing shear stress on the section around the load and this load should be resisted by the structural member from where the concentrated load or the reaction is rested. Cads punching shear designer is a software application which performs rapid and costeffective design solution of punching shear calculations for reinforced. The shear strength is usually provided by concrete alone in order to avoid expensive shear reinforcement, therefore shear could control the footing thickness. Although generally preceded by flexural failure, punching shear is a brittle failure mode and the risk of progressive collapse requires a higher safety class in structural design punching shear design. Max frank offer a punching shear reinforcement customised design program which automatically calculates the most costeffective design solution for.
Aside from flexural checks, one of the most important points to consider in the design of the pile cap is the punching shear checks. Jul 17, 2014 punching shear is a phenomenon in flat slabs caused by concentrated support reactions inducing a cone shaped perforation starting from the top surface of the slab. Jordahl expert anchor channels and punching shear reinforcement. Tedds engineering library november 2015 tekla tedds.
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