[EN-US] KB 001916 | Vérification des platines de pied selon l'AISC dans RFEM 6

Sujet :
Vérification des platines de pied selon l'AISC dans RFEM 6
Commentaire :
La vérification des platines d'assise selon l'AISC 360 [1] et l'ACI 318 [2] est désormais disponible dans le module complémentaire Assemblages acier. Dans cet article, nous vous expliquons comment modéliser facilement un assemblage par plaque de pied et comparer les résultats avec un exemple tiré du Guide de calcul AISC 1 [3].
Description :
== Modeling Base Plate Connection ==
1) In the ''Main'' tab, assign the new steel joint to the relevant node. Review the ‘Strength configuration’ to confirm that the default settings are appropriate, making any adjustments as needed (Image 01).
#image@053940#
2) In the ''Components'' tab, select ‘Insert component at beginning’ and pick ‘Base Plate’ (Image 02).
#image@053941#
3) Under the ‘Component Settings’, specify the materials, dimensions, and placements for the base plate, concrete block, grout, anchors, and welds. The options to consider cracked concrete and shear transfer through friction are also available (Image 03).
#image@053942#
== Design Checks According to AISC 360 & ACI 318 ==
The forces in anchor rods are based on finite element analysis (FEA) which accounts for the stiffnesses of the connecting elements (anchor rods, base plates, concrete block, etc.). Prying action can occur when the flexibility of the base plate causes deformation that increases the tension in the anchor rods. These prying forces are also considered in the FEA calculation.
The following design checks for cast-in anchor rods are provided:
Bearing resistance of base plate at bolt holes, ϕ-bR-nb
Steel tension resistance of anchor, ϕ-atN-sa
Concrete breakout tension resistance, ϕ-cbtN-cbg
Steel shear resistance of anchor, ϕ-avV-sa
Concrete breakout shear resistance, ϕ-cbvV-cbg
Concrete pry-out shear resistance, ϕ-cpvV-cpg
The following design checks will be added in the future:
Concrete breakout tension resistance for anchors with 11 in ≤ h-ef ≤ 25 in
Pullout tension resistance
Concrete side-face blowout resistance
Other design checks including concrete bearing compression resistance, weld resistance, and plastic strain of base plates and members are also provided.
== Example ==
Example 4.7-11 of AISC Design Guide 1 is presented to verify the results from the RFEM model. A base plate connection for a W12x96 column subject to compression and moment is designed in this example. The base plate is 2.0 in thick with assumed grout thickness of 1.0 in. The effective embedment length, h-ef is equal to 18.0 in. The loads and material properties are shown in Image 04.
In the example, the actual extents of the concrete are not given, and it is assumed that there is sufficient area for the anchor rod tension breakout cones to form with respect to the edge distance. To satisfy this assumption, concrete block dimensions equal to 1.5h-ef + rod spacing +1.5h-ef are used (66.0 in x...
► Plus d'informations : www.dlubal.com...
► Tous les articles de la base de connaissances : www.dlubal.com...
Cette vidéo vous a-t-elle été utile ?
► Si vous avez aimé cette vidéo, nous vous invitons à nous laisser un commentaire.
Vidéos d'e-learning :
► RFEM 6 pour débutants : • E-Learning | Tutoriel ...
► Programmation avec RFEM 6 et Python : • E-Learning | Programma...
► Tutoriel RFEM 6 avec Rhino & Grasshopper : • E-Learning | Tutoriels...
Dlubal Software fournit une assistance gratuite. Avez-vous des questions ?
► Foire aux questions (FAQ) : www.dlubal.com...
► Posez-nous vos questions : www.dlubal.com...
► Base de connaissance : www.dlubal.com...
Ne manquez pas les dernières informations sur Dlubal Software :
► Abonnez-vous à la chaîne KZbin Dlubal : www.youtube.co...
► Instagram : / dlubal_software
► Vous avez un compte Facebook ? Abonnez-vous à notre page : / dlubal.software.francais
Mots-clés
#BaseDeConnaissancesDlubal #BasePlate #BasePlateConnection #AISCBasePlate #DesignGuide1 #SteelConnection #BASEDECONNAISSANCE #ContributionTechnique #Construction #GénieCivil #IngénieurStructures #CalculDeStructure #CalculDeStructure #RFEM6 #RSTAB9 #DlubalSoftware