Update history​

CYPE Connect

Checking anchors

Version 2023.b implements the detailed checking of anchors in accordance with Eurocode EN 1992. Until version 2023.b, the analysis of the connection was carried out by considering the anchors positioned and the non-linear contact between steel and concrete, but without checking the resistance of the anchors.

These new detailed checks can be consulted in the "Analysis" tab, as well as the checks already implemented for the rest of the elements. These checks can be for a single anchor as well as for the group.

In the project options, in the "Codes" dialogue box, the group of options relating to the concrete code for anchor testing has been implemented.

The "Anchors" operation includes the "Check anchors" option. When this option is activated, the program checks the anchors and also allows certain parameters and factors that must be taken into account in this check to be edited.

The connection summary list includes the resistance tables of the anchor group and the individual resistance of each anchor.

Implementation. EN 1992-4:2018 (EU International)

Eurocode 2 - Design of concrete structures - Part 4: Design of fastenings for use in concrete.

Implemented in CYPE Connect and StruBIM Steel for checking anchors in concrete.

Implementation. ACI 318M-19 (USA - International)

"Building Code Requirements for Structural Concrete".

Implemented in CYPE Connect and StruBIM Steel for checking anchors in concrete.

Analysing the rotational stiffness of connections

Version 2023.a of the "CYPE Connect" and "StruBIM Steel" programs includes the analysis of the rotational stiffness of the connections. With this analysis option, users can obtain as results the resistant moment, initial stiffness, secant stiffness and classification of the connection (rigid, semi-rigid or pinned) of the steel section.

To obtain the "Moment - Rotation" graph, the program carries out an iterative process by analysing the rotation in different load steps. The resistant moment is obtained when any element in the connection (plates, sections, welds or bolts) no longer complies, i.e. its demand capacity ratio is greater than 100%.

The "Analysis" tab includes the "Rotational stiffness" tool in the top toolbar. If the tool is selected, the rotational stiffness analysis is run.

Furthermore, the "Analysis" tool has been renamed. In previous versions, the "Analysis" button was used to run the stress and deformed shape analysis. This button will now be called "Stress / Deformed shape".

The results can be viewed on the right-hand side of the "Analysis" tab. The top drop-down menu allows users to choose the type of results to be displayed, "Stress/Deformed shape" or "Rotational stiffness". By selecting "Rotational stiffness" the program displays two tables and the "Moment - Rotation" graph.

The first table shows all the analysed bars with their secant stiffness and the connection classification in each plane. The second table shows the load cases analysed for the selected bar. Each load case will indicate the acting moment, the resistant moment, the secant stiffness and the initial stiffness.

The graph shows the curves for "Moment - Rotation", "Acting moment of the selected load case", "Resistant moment", "Ultimate stiffness for rigid connections (Sj,1)" and "Ultimate stiffness for pinned connections (Sj,2)".

As a result of implementing the rotational stiffness analysis, the following changes have been made to existing tools in the program:

  • Selecting bars and load cases
    Using the "Loads" button, the dialogue box is launched allowing users to select the bars from which the rotational stiffness of their connection is to be analysed. In the centre of this dialogue box, there are two tabs for defining the load tables, per load case. The "Rotational stiffness" tab requests a list of loads, the lengths of the elastic bar in the structural model (used to establish the limit stiffnesses of rigid or pinned connections) and the kb factor.
  • Generating from the BIM model
    By using the "Generate from BIM model" button, the dialogue box for applying filters and importing loads is launched. This version also includes options for importing loads for the rotational stiffness analysis. In addition to the loads, the elastic lengths of the bars in the structural model are also imported, these lengths are necessary in order to classify the connection correctly. Five options are provided for importing load cases depending on the forces:
    • Maximum moments, with simultaneous forces
      Imports load cases that have larger My or Mz moments, either positive or negative, as well as all other simultaneous forces.
    • Maximum moments, without the other forces
      For the maximum moment load cases, only the values of My and Mz are imported.
    • Maximum moments by plane, with simultaneous forces
      Imports load cases with maximum moments and their simultaneous forces per plane, i.e. creates load cases with forces per plane (XY and XZ).
    • All
      Imports all load cases.
    • None
      Does not import any load case.
  • Classifying the connection
    In order to classify the connection as rigid, semi-rigid or pinned, the limit stiffnesses for rigid and pinned connections are first established. Depending on the selected steel code, the initial stiffness or the sectional stiffness is compared with these limits.

Exporting in FBX format

Version 2023.a of all CYPE programs that have the "Print/Save the current view" tool (usually all programs that display graphic information in a window) allows any generated 3D model to be exported in FBX format. This is one of the most common and accepted formats among rendering software (Twinmotion, Enscape, Sketchup+Vray, among others).

Exportation in FBX format is found in the dialogue box that opens when selecting the "Print/Save the Current View" button in any of the programs that include this tool. This feature allows users to export any element that is visible in the current window at that moment in FBX format (as well as elements that have been imported from other programs).

Improvement for importing bars

In version 2022.e, the importation of sections from the BIM model has been improved. It is now possible to select or modify the sections for each of the typologies defined in the IFC file.

In the "Bars" step of the BIM model import assistant, a list of detected section types is displayed. In the "Cross section" column, the section to be assigned in CYPE Connect will be indicated. By clicking on each cell, the cross section and material selection panel can be accessed.

When possible, the program generates a proposal based on the information available in the BIM model. Users can select the sections they wish to import as well as carry out manual assignments when deemed necessary or when automatic detection has not been possible. The assignment made is saved for subsequent imports.

Section series library

The possibility of using the predefined section libraries that are available in other structure design software such as CYPECAD and CYPE 3D has been incorporated.

Selection of load cases considered in the analysis

As of version 2022.e, users can select the load cases to be considered when analysing a joint. To do this, the "Acting" column has been added to the table in the "Load case" dialogue box, allowing the desired load cases in the analysis to be activated or deactivated.

General improvements

Version 2022.h of CYPE software is a closing version of version 2022.

In addition to the new features and improvements that are explicitly outlined in each version of CYPE software, process optimisation involving internal improvements to our programs is normally included. All programs are systematically checked during each revision, and improvements are made to improve their performance. As a result, we advise our users to always update their version to the latest revision (in this case, v.2022), regardless of whether or not new features in version 2022.h are explicitly mentioned for the program they are using, the country for which they are using CYPE software or the language in which it is installed.

New paper formats

New paper formats have been added to CYPE Connect and Open BIM Layout:

  • DIN B type
    B0, B1, B2, B3 and B4.

  • ARCH type
    ARCH A, ARCH B, ARCH C, ARCH D, ARCH E and ARCH E1.

Sheets associated with the connections library


As of version 2022.g, the connections exported to the connections library will also save their defined sheets. Thanks to this implementation, the work spent on making a detail drawing of a connection can be used for similar connections when applying a library connection.

Linking tags and dimensions to elements geometry

The dimensions defined in each sheet are associated with the geometry of the elements of the scene that have been taken as a reference. This association allows the dimensions of the model to be automatically readjusted in the event of changes in the dimensions of the model.

In the particular case of the tags, this association was already maintained in previous versions, except in the particular case of the tags of the holes in CYPE Connect. As of version 2022.g, this association is maintained, allowing the directrix of the tag to be moved when the position of the relevant hole changes. This is a special case, as the hole itself is not an object in the scene.

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