HLR Section 7.1 |
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Reports & Results |
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CONTENTS | ||||||||||||||||||||||||||||||||||||||||||||||
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Other Links: | Main Index | Job ID | Vehicle Data | Route Data | Analysis | | ||||||||||||||||||||||||||||||||||||||||||||||
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7.1 Review Analysis Results | ||||||||||||||||||||||||||||||||||||||||||||||
This tab panel permits all restricted structures to be examined and changes to be made to any restriction suggested by HLR. The dialog window will only appear if HLR finds a restriction in any structure along the route. A typical results review panel is shown below. Sufficient information about the structure is displayed in the dialog box in order that an informed decision can be made about the restriction recommended by HLR and any action that you may wish to take to change it. | ||||||||||||||||||||||||||||||||||||||||||||||
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Girder/Section Capacities: This indicates the capacity of either the whole structure or part of the structure in question (e.g. girders). It may show moments (ultimate or working), shears, reactions or the allowable Moment Ratio. Corresponding vehicle effects will be displayed in the lower frame. Note that if two moment capacity sets have been specified for the structure and the second set is used to analyse another girder it will be reported as such. If the second capacity set is used for the 5kph check it will also be reported in an appropriate way. If a Working Stress check has been performed on the structure the Working Overload moment will be shown together with the Working Overload Factor used in the analysis (echoed from the Analysis Options form). Vehicle Effects: These values will either be moments (M1, M2, M3), shears (V1, V2, V3), reactions (R1, R2, R3) or moment ratios (R1, R2, R3), depending on the nature of the check perform. The three values represent the calculated heavy load effects for the three notional travel conditions described in Section 6.2.2. The diagram on the right is a visual representation of these three values and permits easy visual comparison with the section capacity. The labels describing the three effects can be customised via the Options/Default Settings menu items. If a Vehicle Reduction Factor (VRF) was specified for the analysis, the following entry will appear in the Comments field if, for some reason, the factor had not been applied: * Vehicle Reduction Factor excluded from analysis. (Note that no other indication is given as to why the factor was excluded). Previous/Next restriction for current structure: For bridges with multiple restrictions these buttons allow you to navigate forwards and backwards through the restriction list. View M,V Envelopes: This button will only appear for continuous structures. It enables both factored and unfactored moment envelopes to be viewed for the strucutre. It will not be shown on the form if the bridge is simply supported. Refer also to Section 7.3 for details. Change Restriction: This button allows the restriction imposed by HLR to be changed (e.g. a restriction of 5 kph centre flagged by HLR can be changed to 10 kph). <Prev | Next>: Move to the previous / next restricted structure in the list. The small buttons at either end allow you to quickly navigate to either the first restricted structure or the very last. |
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7.2 Reports | ||||||||||||||||||||||||||||||||||||||||||||||
A comprehensive series of reports have been provided with which to view and print results at the conclusion of the analysis. They are accessed via the Reports tab form shown below: | ||||||||||||||||||||||||||||||||||||||||||||||
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7.2.2 Restricted Bridges Only Continuous Structures: In the case of continuous structures for which moment capacities are not available, HLR will compare the moment envelopes produced by both the heavy load vehicle and the original design vehicle and insert the words "No capacities" in the right-hand comments field. (In effect the moments produced by the original design vehicle constitute a notional "capacity" for the structure). Ad-Hoc Structures at End of Route: Structures that have been added to the end of the route for ad-hoc analysis
will appear under a dummy link called "Additional Structures
at the End of the HL Route". For travel in the forward direction this link
will be at the end of the report; for travel in the reverse direction the link will appear at the start of the report. For travel in both directions, results of the analysis will be included in all reports. To distinguish between structures in each of the two separate directions, the report is divided by a highlighted REVERSE DIRECTION label and the top-hat symbol (^) is appended to structure numbers analysed in the reverse direction. Structure-Specific DFs : If structure-specific distribution factors for a structure are used in the analysis (instead of the default values) they will be displayed in the output report. Vehicle Reduction Factors: If the vehicle reduction factor has been switched on in the Analysis Options form the VRF value will appear in the
main report header block. If the factor was not applied to a structure because the necessary criteria were not
met the note VRF=1
will be displayed for the given structure together with one of the following words: Report Legend If the check box 'Show
explanatory notes on bridge reports' is ticked, HLR will display
a number of notes at the bottom of the report that define key parameters and explain some of the limitations and
restrictions embodied in the report. They include the following:
7.2.3 All Bridges on Route: Simply Supported Structures: If no restrictions are found for multi-span simply supported structures then results for only the first span will be reported (this includes the moment ratio check). If multiple checks are performed on a simply supported structure (both moment and shear, for example) and both checks were found to be OK then only moment capacity results will be reported. If a moment capacity restriction is found but shear is OK then only moment capacity results will be reported - not shear. Continuous Structures: If no restrictions are found HLR will report "All spans OK". For continuous structures for which moment capacities are not available, HLR will compare the moment envelopes produced by both the heavy load vehicle and the original design vehicle. The notional "capacity" becomes, in effect, the moments produced by the original design vehicle. The words "No capacities" are shown in the right-hand comments field to warn you of this situation. Bi-Directional Travel: For travel in both directions, results of the analysis will be included in all reports. To distinguish
between structures in each of the two separate directions, the report is divided by a highlighted REVERSE DIRECTION label and
the top-hat symbol (^) is appended to structure numbers analysed in the reverse direction. Refer also to Section 7.2.2 above for information relating to restricted structures (they will be displayed in the same fashion as described there-in). If structure-specific distribution factors for a structure were used in the analysis (instead of the default values) they will be displayed in the output. Vehicle Reduction Factors: If the vehicle reduction factor has been switched on in the Analysis Options form the VRF value will appear in the
main report header block. If the factor was not applied to a structure because the necessary criteria were not
met the note VRF=1
will be displayed for the given structure together with one of the following words: Report Legend If the check box 'Show
explanatory notes on bridge reports' is ticked, HLR will display
a number of notes at the bottom of the report that define key parameters and explain some of the limitations and
restrictions embodied in the report. They include the following:
7.2.4 Vehicle & Route Details Current Vehicle Details Displays curent vehicle details in report form, ready for printing. It can not be edited. Current Route Details Displays current route details in report form, ready for printing. It can not be edited. In addition to start and end link numbers and full and abbreviated link names the report includes the total number of structures on each link in the route. This allows links with no structures to be quickly and easily identified. ![]() 7.2.5 Blank Summary Report This report is only accessible from the Reports option on the top menu bar. Click this option then select Create a blank summary report (Minute) from the drop-down submenu. A "blank" report will be created that only contains the standard header and footer information together with any Job ID data entered by the user. 7.2.6 List all Bridge Numbers on Current Route: This option is only accessible from the Route menu item. It allows all links and their associated bridge numbers to be displayed in an HTML-formatted report (i.e. the report is viewable and printable but not editable). 7.2.7 Log File Lists the results of the entire analysis in a highly codified way. It is generally only used when developing and debugging the system and not in a production mode (unless you suspect that other reports are not showing correct answers). The report can be edited and printed. 7.2.8 Save Application to Database Applications can be saved to the database for subsequent viewing, perusing and reloading. All job identification, route, vehicle and analysis data associated with the application is saved and can be recovered and re-analysed at a future date. Refer also to Section 6.1 for further details. |
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7.3 Moment & Shear Envelopes | ||||||||||||||||||||||||||||||||||||||||||||||
Two different envelope types may be viewed and printed for all continuous structures along the route:
This report lists factored maximum and minimum moments (M1,
M2, M3) with corresponding moment capacity
values at 10th points along each span. This option displays maximum and minimum values of moments at each 10th section along the continuous beam model. Shears and/or reactions will also be shown if the data file contains a shear or reaction check specification (refer to Section 6.2 - 6.4 for details) i.e., the full envelope of each result vector as calculated by the analysis module will be tabulated. Calculations are based on the reduced vehicle axle loads and with the vehicle travelling in the correct relative direction across the structure. Distribution factors and Dynamic Load Allowance are not included in the analysis. The vehicle is moved in increments of 1/20th span length across the structure and a default value of E based on the material type is used in the analysis (e.g. 35,000 for PSC bridges and 200,000 for steel). |
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