AASHTOWare BrDR 6.8 Feature Tutorial 2016 BrDR User Requested Enhancements
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1 AASHTOWare BrDR 6.8 Feature Tutorial 2016 BrDR User Requested Enhancements
2 Topics Covered Reinforced concrete box culvert enhancements o Culvert Wizard for creating Culverts, Culvert Structure Alternatives and assign Culvert Definitions to alternatives o Culvert - Ability to specify LRFD 6th Edition 2013 Interim for LRFD design review and LRFR analysis o Culvert - Ability to specify limit states for LRFD design review o Culvert - Ability to process only applicable limit states based on vehicle categories o Culvert - Ability to specify whether to consider haunch stiffness in the culvert FE model Specify design vehicles in the Shear Stud Design Tool and Shear Stirrup Design Tool Enforce unique name for the Bridge Workspace items in a folder Remove Uniform Load Contraflexure Points Dead Load Case from the Analysis Results window Concrete member point of interest Concrete member point of interest control options changes Effective supports for concrete member alternatives Construction joint for RC tee beams Multi-cell box web schematic Output control to not write LRFD/LRFR concrete articles LRFD live load distribution factor LRFD live load distribution factor range of applicability Last Modified: 8/9/2016 1
3 Culvert Wizard for creating Culverts, Culvert Structure Alternatives and assign Culvert Definitions to alternatives The Culvert Wizard can be accessed through the Bridge Alternative window in the Bridge Workspace tree. Last Modified: 8/9/2016 2
4 Culvert wizard is shown below with three culverts. Culvert Name and Culvert Alternative Name can be generated by setting Culvert prefix -> clicking on Generate Culvert Names button and Culvert Structure Alternative prefix -> clicking on Generate Culvert Structure Alternative Names button respectively. Culvert start distance on the reference line should be entered as Distance. Culvert Definition can be assigned to each culvert by using the dropdown listing all the Culvert Definitions defined. Click Finish to generate the Culverts and their Culvert Structure Alternatives. Last Modified: 8/9/2016 3
5 The culverts are created with the distance on reference line and the Culvert Definition assigned to Culvert Structure Alternative as defined in the wizard above. Last Modified: 8/9/2016 4
6 Culvert - Ability to specify LRFD 6th Edition 2013 Interim for LRFD design review and LRFR analysis LRFD 6th Edition 2013 Interim (LRFD 6 th 2013i) can be selected as a Spec Version for both AASHTO Culvert LRFD and LRFR Engines. Last Modified: 8/9/2016 5
7 Culvert - Ability to specify limit states for LRFD design review Culvert can be design reviewed with LRFD based on the limit states selected for Reinforced Concrete in the Factor - LRFD window as shown below. The screen shot below shows the above LRFD factor being assigned to Culvert Alt 1. Last Modified: 8/9/2016 6
8 A comparison of LRFD specification checking with design vehicle HL-93 between and 6.8 is presented below to highlight the implementation of limit states based on selections above. Strength-II is skipped since there is no permit vehicle defined. Fatigue-I and Fatigue-II are skipped since reinforced concrete is not evaluated for fatigue. Last Modified: 8/9/2016 7
9 Culvert - Ability to process only applicable limit states based on vehicle categories Design review of culvert with LRFD considers vehicle category when deciding on applicable limit states. With the limit states selected as shown above for Ability to specify limit states for LRFD design review topic and only permit vehicle defined, BrDR will only consider Strength-II limit state as shown below. Last Modified: 8/9/2016 8
10 Culvert - Ability to specify whether to consider haunch stiffness in the culvert FE model This enhancement to the AASHTO Culvert Engine allows user to specify whether to include haunch stiffness in the culvert FE model for LRFD design review, LRFR and LFD rating. The haunch stiffness will be included to both the slab component and the wall component FE models. The midpoint section properties will be used for the FE beam elements within the haunch location. Below figure illustrates the contribution of the haunches to Top Slab 1. Last Modified: 8/9/2016 9
11 Use the Culvert model example in the database Culvert Example 1 to check the implementation of this feature. Open RC Box Culvert Geometry window and add haunches as shown below. The comparison below shows the changes in the depth, area and moment of inertia (I) of the Ext. Wall 1 between Control option: Include haunch stiffness in FE model unchecked and Control option: Include haunch stiffness in FE model checked (as shown above). Last Modified: 8/9/
12 Specify design vehicles in the Shear Stud Design Tool and Shear Stirrup Design Tool Specify design vehicles in the Shear Stud Design Tool Open the Bridge Workspace for BID 1, TrainingBridge1 as shown below. Last Modified: 8/9/
13 Open the Analysis Settings window and enter a design template as shown below. Last Modified: 8/9/
14 Click on the Save Template button to save the design template. Enter a name for the template and click on Save to save the template. Last Modified: 8/9/
15 Click on the to expand the tree for SUPERSTRUCTURE DEFINITIONS, MEMBERS, and MEMBER ALTERNATIVES. The partially expanded Bridge Workspace tree is shown below. Last Modified: 8/9/
16 Open Deck Profile window and browse to Shear Connectors tab. Click on the Shear Stud Design Tool button to open the design tool window. Last Modified: 8/9/
17 Click on the drop down list to choose a design template. The previously defined template HS Design Review is shown in the list. Click on View button to view vehicles in the template. Last Modified: 8/9/
18 Click on Continue button to run an analysis for shear studs. When the analysis is complete, the design result will be shown as follows. Click on Apply button to apply the design result. Last Modified: 8/9/
19 Click on View Calcs button to view the design results. The result shows the vehicles used for the design. Last Modified: 8/9/
20 Specify design vehicles in the Shear Stirrup Design Tool Open the Bridge Workspace for BID 10 as shown below. Last Modified: 8/9/
21 Click on the to expand the tree for SUPERSTRUCTURE DEFINITIONS, MEMBERS, and MEMBER ALTERNATIVES. The partially expanded Bridge Workspace tree is shown below. Last Modified: 8/9/
22 Open the Shear Reinforcement Ranges window. Last Modified: 8/9/
23 Click on Stirrup Design Tool button to open the design tool window. Last Modified: 8/9/
24 Click on the drop down list to choose a design template. The previously defined template HS Design Review is shown in the list. Last Modified: 8/9/
25 Click on View button to view vehicles in the template. Last Modified: 8/9/
26 Click on Continue button to run an analysis for shear stirrup. When the analysis is complete, the design result will be shown as follows. Last Modified: 8/9/
27 Click on Create Ranges to create ranges for the stirrups. Click on Apply button and the range of stirrups is applied. Last Modified: 8/9/
28 Click on View Calcs button to view the design results. The result shows the vehicles used for the design. Last Modified: 8/9/
29 Enforce unique name for the Bridge Workspace items in a folder BrDR does not allow to save items with the same name. Below is an example. Open the Bridge Workspace for BID 1 as shown below. The bridge has a concrete material called 4500 psi Concrete. Last Modified: 8/9/
30 Add a new concrete material by double clicking on Materials, Concrete in the tree. Name the concrete material as 4500 psi Concrete which is the same name as the existing concrete material. Click OK button to save the material. An error message shows up saying Concrete material names must be unique!. BrDR ignores upper case and lower case. Therefore, 4500 psi concrete and 4500 PSI CONCRETE are treated as the same. Last Modified: 8/9/
31 Remove Uniform Load Contraflexure Points Dead Load Case from the Analysis Results window BrDR computes the contraflexure points by applying an uniform dead load along the bridge span. The results of the Uniform Load Contraflexure Points Dead Load Case used to be shown in the tabular results for BrDR versions before In BrDR 6.7.1, open the Bridge Workspace for BID 2 as shown below. Last Modified: 8/9/
32 Click the Analyze button on the toolbar to perform the rating. When the rating is finished, you can review the results due to dead load by clicking the View Analysis Report on the toolbar. The window shown below will open. You can choose Uniform Load Contraflexure Points in the drop down list for Dead Load Case. Last Modified: 8/9/
33 In BrDR 6.8.0, open the Bridge Workspace for BID 2. Click the Analyze button on the toolbar to perform the rating. When the rating is finished, you can review the results due to dead load by clicking the View Analysis Report on the toolbar. The window shown below will open. The results for Uniform Load Contraflexure Points Dead Load Case is no longer shown in the drop down list. Last Modified: 8/9/
34 Concrete member point of interest control options changes In BrDR version 6.7.1, there are multiple changes to the control options for Point of Interest of concrete member alternatives, including Adding Generate at support points, Revising Generate at tenth points to Generate at tenth points except supports, and Adding Generate at support face & critical shear position. In BrDR version 6.7.0, open the Bridge Workspace for BID 11 as shown below. Last Modified: 8/9/
35 Double click on the member alternative Schedule Based Tee, and switch to Control Options tab. Three control options for Points of Interest are shown below. Last Modified: 8/9/
36 In BrDR version 6.8.0, open the Bridge Workspace for BID 11. Double click on the member alternative Schedule Based Tee, and go to Control Options tab. Five control options for Points of interest are shown below. Last Modified: 8/9/
37 Effective supports for concrete member alternatives In BrDR version 6.7.1, users can define the effective supports for all reinforced concrete and prestressed concrete member alternatives. Open the Bridge Workspace for BID 11 as shown below. Last Modified: 8/9/
38 Double click on the Effective Supports and the Effective Supports window shows up as below. Last Modified: 8/9/
39 Click F1 to open the Help file. Description of the window and rules for generating Points of Interest are shown. Last Modified: 8/9/
40 Construction joint for RC tee beams This enhancement enables users to define a longitudinal construction joint in a RC tee beam. The joint is accounted for in the calculation of reinforcement steel development lengths as stated in the notes below. Notes: Construction joint location from top of top flange will be added to the T-beam Cross Section window and T- beam Girder Profile-Section tab. This data will be used to determine if the bar is a top bar in the reinforcement development length calculations. The construction joint location is used to determine if the development length factor for more than 12" fresh concrete below the bar is to be considered. If the construction joint location is not entered, the development length factor will consider the total depth of the section below the bar. To define the construction joint location, open the Bridge Workspace for BID 11, RCTrainingBridge1 as follows. Last Modified: 8/9/
41 Expand the Structure Definition #1 as follows. Last Modified: 8/9/
42 Double click on Cross Section A to open the Cross Sections window. For cross-section based RC Tee beam, development length of longitudinal rebars are not calculated. Adding the construction joint does not change the analysis results. Last Modified: 8/9/
43 Expand the Schedule Based RC Structure as follows. Last Modified: 8/9/
44 Open Girder Profile window and the construction joint location can be defined. Last Modified: 8/9/
45 Multi-cell box web schematic In BrDR version 6.7.1, users are allowed to view the schematics for webs of concrete multi-cell box superstructures. Open the Bridge Workspace for BID 27 MultiCell Box Examples as follows. Click on WEB1 for RC MCB Example to highlight it. Last Modified: 8/9/
46 Click on View Schematic button. The schematic of WEB1 is shown as follows. Last Modified: 8/9/
47 Output control to not write LRFD/LRFR concrete articles In BrDR version 6.7.1, users can choose to not generate the detailed LRFD/LRFR specification articles in the Specification Check window. This feature only affects all concrete articles. Below is an example showing how to use the feature. Open the Bridge Workspace for BID 10, Example7 as follows. Last Modified: 8/9/
48 To specify the specification output, open the View analysis setting window by clicking the button shown below. The Analysis Settings window shows up. Last Modified: 8/9/
49 Switch to Output tab. The control option LRFD/LRFR Conc Article Detailed is shown as follows. It is checked by default. Click the Analyze button on the toolbar to perform the rating. Last Modified: 8/9/
50 After the rating analysis is done, click on View Spec Check button to view the specification articles. The detailed specification articles can be reviewed by double clicking on the specification articles. Last Modified: 8/9/
51 Go back to Analysis Setting window, Output tab. Uncheck the LRFD/LRFR Conc Article Detailed checkbox. Click the Analyze button on the toolbar to perform the rating. Last Modified: 8/9/
52 After the rating analysis is done, click on View Spec Check button to view the specification articles. The Spec Check Viewer only shows Pass/Fail for the articles but restricts opening of the articles. Last Modified: 8/9/
53 LRFD live load distribution factor range of applicability In BrDR version 6.7.1, users are allowed to specify ranges of applicability for LRFD live load distribution factor calculations. To view the range of applicability, open the Library Explorer. Expand the LRFD DF Applicability Ranges folder, then click on Standard. The two default ranges are listed. Last Modified: 8/9/
54 Double click on 2014 (2016 Interim) AASHTO LRFD Ranges to open the window. This window has six tabs which contain ranges of applicability defined in the following tables in the 2014 AASHTO LRFD Bridge Design Specifications with 2016 Interim. Table b-1: Distribution of Live Loads for Moment in Interior Beams Table d-1: Distribution of Live Loads for Moment in Exterior Longitudinal Beams Table e-1: Reduction of Load Distribution Factors for Moment in Longitudinal Beams on Skewed Supports Table a-1: Distribution of Live Load for Shear in Interior Beams Table b-1: Distribution of Live Load for Shear in Exterior Beams Table c-1: Correction Factors for Load Distribution Factors for Support Shear of the Obtuse Corner Last Modified: 8/9/
55 Click F1 to open the Help file. Description of the window and the override rules are shown. Last Modified: 8/9/
56 To specify user defined ranges of applicability, switch to Agency folder under LRFD DF Applicability Ranges folder, and select File/New from the menu. The following window will show up. Last Modified: 8/9/
57 Define the ranges and the override rules. Then click Save to save the data and close the window. Last Modified: 8/9/
58 Open the Configuration Browser by clicking, then double click on System Defaults. Switch to Superstructure Analysis tab and choose the previously defined ranges of applicability in the LRFD DF Applicability Ranges dropdown list. Click Save to save the data and close the window. The user defined ranges of applicability will be used for calculating LRFD live load distribution factors. Last Modified: 8/9/
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