LIRA-SAPR 2017 R1 Release Notes
Structural engineering software LIRALAND Group
New system: Large Panel Buildings
Analysis model of the large panel building is generated. Analysis is carried out, then you could obtain parameters of the stress strain state for elements of the large panel building. Constantly enlarged and editable library of joint types is provided. This library determined adaptability of the system to new types of large panel buildings.
The library contains different variants of the following types of joints: platform joint, contact joint, vertical joints, vertical joints of wall panels with or without embedded items, etc. According to selected type, the user could compose certain samples of joints and place them to the building model.
Linear and nonlinear analyses area available for large panel buildings. The FE library contains new elements of panel joints. Nonlinear analysis enables you to carry out analysis by step-type method (simulation of loading process) and iteration method based on NonLinear Engineering Design concept (NL Engineering). With this concept it is possible to carry out analysis in traditional method (analysis on several load cases, composing DCF and DCL, analysis of elements of reinforcement, structural elements of joints and embedded items) with indirect consideration of nonlinear behaviour of structure. After analysis you will obtain all parameters of the stress-strain state of elements of the large panel building including diagrams of contact stresses in joints of the building.
More details on this possibility can be found in the article (in Russian): «Modeling and calculation of large-panel buildings in the LIRA-SAPR 2017»
New system: Masonry Structures
Analysis of reinforced masonry structures in LIRA-SAPR 2017 supports the following building codes: SP 15.13330.2012, SNIP II-22-81 and DBN B.2.6-162.
The model is generated in preprocessors SAPFIR or LIRA-SAPR. The user assigns horizontal levels in structural model (at the elevation of min section of pier, at elevation where floor slabs are supported, etc.), the strength of masonry is checked at these levels. When forces are computed by the solver, combined 3D behaviour of load-bearing brick and reinforced concrete elements of the building is considered. Required number of mesh reinforcement as well as rebars of vertical reinforcement are determined. It is possible to analyse several variants for different division of wall segments in different design options defined by the user.
Materials are prepared and defined for design model in a similar way to the input data for analysis of steel and RC structures. Materials for analysis of masonry structures contain three components: properties of masonry, properties of reinforcement, parameters of exterior strengthening of piers.
Loads on brick piers are generated according to results of static and dynamic analyses. Loads for piers are presented both for separate load cases and for their combinations. Loads on piers may be presented as mosaic plots or as vectors applied at gravity centres for every pier.
Output data for mesh reinforcement contains mosaic plot for number of masonry courses in which reinforcement should be placed, mosaic plot for required diameters of meshes and appropriate percentage of reinforcement in masonry.
If vertical rebars or combination from mesh reinforcement and rebars were assigned in analysis, then output data will contain mosaic plots for required number of rebars and their diameters as well as appropriate percentage of reinforcement.
For every level it is possible to obtain the sketch of working drawing with number of masonry courses in which it is necessary to place reinforcement meshes.
In the same project it is possible to define different types of masonry structures, different types of stone, slag stone, shell limestone, tuff, etc.
New system: Composite (Steel & RC) Structures
Analysis of composite steel and RC structures is carried out according to Chapter 7 SP 266.1325800.2016- analysis of RC structures with stiff reinforcement and analysis of pipe concrete structures.
Analysis and design (as sketches) of elements (beams, columns) in composite steel and RC structures is available. Sections for stiff reinforcement are defined. Defined sections are checked and, if required, flexible reinforcement is determined. A wide set of types of stiff reinforcement is provided.
Advanced algorithm for selection and check of somposite steel and RC section is provided. The section includes elements of three different materials: concrete (B30, B40, etc.); stiff reinforcement (VSt3kp, etc.); flexible reinforcement (A400, A500, etc.).
The deformation theory of reinforced concrete is realized. Composite steel and Rc section may be analysed on all types of forces: Mx, My, Mkp, N, Qx, Qy.
Output data for composite steel and RC structures is presented in graphic and tabular form in a similar way to analysis of RC structures.
Elements of composite steel and RC structures may be exported to local mode of analysis for more detailed analysis and additional examination.
New system: Cross-section Design Toolkit
The following stiffness properties are computed: flexural, torsional, shear, warping, for mono- and multi-material arbitrary sections. Sections may be solid, thin-walled and combined. It is possible to include strip elements and rolled profiles. When you define forces that act on the section, the program computes stresses at any point of cross-section – axial, shear, equivalent by different criteria of rupture. User-friendly interface on the basis of SAPFIR tools.
Unified graphical user interface
Local axes of plates are automatically unified when you create and edit plane fragments of the model.
More methods to define and edit surface loads. Contour vertices may be defined by coordinates, with vector and by increment of coordinates from the current vertex.
When loading history is generated, for nonlinear problems it is possible to use defined combinations of DCL as well as load cases.
Output data for problems with time history analysis may be presented graphically for the whole model at the user-defined time points. Characteristic time points may be selected and saved (in an easy-to-use form) to the list that you will edit later. It is possible to animate the model deformation and manage the animation process.
Skews of check points (located at different levels) are computed according to analysis results of separate load cases, design combinations of loads (DCL) or nonlinear loading history.
New option to generate (for fragment of the model) the shortlist with materials available in the fragment.
When you copy parameters of design option, list of parameters to be copied and settings are extended.
When the models are merged, the main model and the model that should be attached are automatically intersected, common data for design process is generated.
Added functionality in flags of drawing in order to manage information that will be displayed on the screen. New filters for search and selection of objects on design model and further fragmentation of design model.
New tool to display the input data and output data: it is possible to display contour plots, mosaic plots and diagrams only for selected elements and nodes without model fragmentation.
Nodal response spectrums for dynamic loads on accelerograms are realized; these spectrums enable the user to obrain dynamic parameters for any zone of the structure.
Time history analysis is carried out according to Newmark method. Within this analysis, damping properties of structure are considered – two-node element of visco damper; damping properties of materials (soil, etc.)
Within time history analysis, boundary elements are realized; they simulate behaviour of rejected part of soil in static and dynamic loads. For dynamic loads, such elements are transparent for the waves. Realized boundary elements are debugged and will be included into subsequent releases of the program.
Pushover analysis: it is possible to consider (by approximate method) physically nonlinear properties of material in dynamic loads.
Within step-type solver, analysis with account of nonlinear thermal creep is provided.
In step-type solver it is possible to compose the loading history not only from load cases but from DCL as well, and combined history that contains both load cases and DCL.
For physically nonlinear analysis, the stress-strain diagram with falling branch is realized (Eurocode 2).
Finite elements that simulate platform joints in large panel buildings for linear analysis (FE 58, FE 59) and for nonlinear analysis (FE 258, FE 259).
Modified analysis of mode shapes of natural vibrations. Modified buckling analysis.
Analysis of Reinforced Concrete (RC) Structures
Analysis of torsion reinforcement for composite sections is available for building code SP 63.13330.2012. Composite sections are divided into rectangular components. Appropriate torsion reinforcement is displayed for every rectangular component.
Effective height of wall is considered in analysis of reinforcement according to Karpenko theory. Four concrete covers may be considered in analysis of reinforcement in plate elements by Karpenko theory.
Punching shear analysis for floor slabs according to CH PK EN 1992-1-1:2004/2011 and DBN B.2.6-98:2009.
Schematic design is provided for beams and columns according to SP 63.13330.2012.
When you design beams and columns it is possible to arrange reinforcement, vary diameters of reinforcement bars, obtain diagram of materials, obtain information about reinforcement in selected section of beam (column).
You could also obtain sketches of working drawings for reinforcement in beams and columns. The sketches include sectional elevations, cross-sections of beam (column), specification of reinforcement and bill of materials.
Analysis of steel structures
In addition to 74 existing joints of steel structures, 7 new types of joints with rigid column bases are added with different arrangement of anchor bolts and traverses.
To evaluate in detail the output data for new joints, the tracing routine is provided.
In local mode of STC-SAPR, data about governing forces that were used for selection/check of steel section is added for the building code SP 16.13330.2011. This option significantly helps you to simplify evaluation of the output data.
Report Book (Documentation system)
To check and prepare documentation with stiffness parameters applied in design model, tables of input data may be updated now.
Set of updatable tables for output data of masonry structures is enhanced (loads on piers by load cases/DCL/DCF, output data for additional reinforcement with reinforcement meshes and rebars).
Moving loads according to SP 35.13330.2011
Moving load at elements of the bridge span is simulated according to SP 35.13330.2011. To do this, preprocessor SAPFIR provides you with special tools that enable you to select load from the library, adjust parameters, graphically define and edit trajectories, stand points and generate DCL. The library of loads is refilled with interactive tools.