"Normas Técnicas Complementarias para Diseño y Construcción de Estructuras de Acero (2020)" – Mexico, CDMX.
Chapter 10 "Connections" from NTC-DCEA 2020 for designing connections in steel structures has been implemented for the following programs:
The Polish National Annex to Eurocode 3 ("Design of steel structures - Part 1-8: Design of joints") for the design of joints in steel structures has been implemented into the following programs:
Version 2021.g of CYPE’s programs is a closing version of the 2021 version.
As well as the new features and improvements expressly indicated in each version of CYPE software, process optimisation involving internal updates for all our programs is normally included. In each revision, all programs are systematically checked and changes are made to improve their performance, therefore, we recommend that our users (in this case those of v.2021) always update their version to the latest one, regardless of the country for which they are using CYPE software or the language in which it is installed.
As occurs in CYPE 3D, as of the 2018.a version, CYPE-Connect includes the analysis, design and check of prequalified connections in accordance with ANSI/AISC 358-10 (Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications) and ANSI/AISC 341-10 (Seismic Provisions for Structural Steel Buildings).
Prequalified connections are applied to Special Moment Frames (SMF) and Intermediate Moment Frames (IMF) as indicated in the ANSI/AISC 341-10 code.
It is possible to define prequalified connections in projects in which the rolled and welded steel code: ANSI/AISC 360-10, has been selected.
For more information on which prequalified connections have been implemented, how beams interact at the same node, the checks that are carried out and drawing that are generated, please consult the relevant sections in the new features of CYPE 3D of this webpage.
Operation in CYPE-Connect
To calculate prequalified connections in CYPE-Connect, users must select the rolled steel code: ANSI/AISC 360-10, the connection in question must have the geometry corresponding to one of the implemented prequalified connection types, and the moment earthquake-resistant system option in the “Edit the geometry of the node” dialogue box must be activated with one of the available systems (SMF – Special Moment Frame, or IMF – Intermediate Moment Frame).
Even though no checks are carried out on cold-formed steel for prequalified connections, for internal operation purposes of the program, the selected cold-formed steel must be one CYPE-Connect considers to be compatible with the ANSI/AISC 360-10 code, such as “AISI S100-2007”.
As well as the earthquake-resistant code that is used, the following parameters must be defined:
In previous versions, connections fixed to column or beam flanges, welded or bolted, required web stiffeners.
As of the 2016.a version, these connections can be defined without stiffeners. This option is available only to check the connection. If the connection is re-designed, stiffeners will be provided. Users has the option to delete the designed stiffeners and check the connection without the stiffened web. Stiffeners associated with a moment reinforcement in the connection to the web of the main section are required and cannot be eliminated.
In versions earlier than the 2016.a version, the type of weld applied could not be edited. The welds are generally angle welds (except in connections with circular hollow sections and anchorage bolts).
As of the 2016.a version, the type of weld can be edited. Users can choose amongst:
The welds will be represented on the plans with their corresponding symbols.
Thread dimensions and lengths have been updated for all bolt series. Bolt series A307 has been increased up to diameter 4.
As of the 2015.f version, some types of welded and bolted I-section beam-beam and beam-column connections can be designed and checked in CYPE 3D and in CYPE-Connect when beams reach the web of the other beam, or to the flange or web of columns and are not at a right angle on plan.
The maximum permitted angle will depend on whether the connection can be executed (space available to place bolts) and on design standard limitations (effective weld angle).
Below are the types of connections for which this angle can be used (for both welded and bolted connections):
The connection details drawing includes an on-plan view, the angle of the beams with respect to the plane orthogonal to the surface connecting to the column or beam.
As of the 2015.f version, welded and bolted I-section column-lintel connections designed and checked in CYPE 3D and CYPE-Connect, can have slightly eccentrically aligned webs. Both programs can design these connections whilst the projections of the webs of the column and lintel overlap in a plane perpendicular to that of the webs’.
As is the case with CYPE 3D, the 2015.b version includes the Indian rolled and welded steel code (IS 800: 2007) to edit and check connections designed using the joints modules (Joints I, II, III, IV and V) and using the Baseplates module.
Indian Standard. General construction in steel – Code of practice (Third Revision).
This code was already implemented in CYPECAD, CYPE 3D, Continuous beams and Portal frame generator to design and check rolled and welded steel bars. Now, in the 2015.b version, the code has been implemented in CYPE-Connect and in CYPE 3D for the design and check of steel connections.
The design and check of baseplates have been implemented in CYPE-Connect. With this implementation, the joints and baseplates that can be designed, checked and edited by CYPE-Connect are the same as those for CYPE 3D (Metal 3D).
As is the case with CYPE 3D (Metal 3D), if the user license contains the Joints I, II, III and IV modules, users can check, design and generate baseplates for rolled and welded steel I-sections. If the users license contains the “Baseplates” module, users can check, design and generate welded baseplates for any steel column arrangement (simple and composite sections; rolled, welded and cold-formed sections).
