Influence Line Apparatus | FortiTestX – 47
The Influence Line Apparatus FortiTestX-47 studies reactions and influence lines on a three-span bridge with 250 mm end spans and 150 mm suspended center span. Features four adjustable ST 124 vertical force supports for reaction measurement, two rolling loads for progressive load application, and two ST 131 dial indicators for deflection measurement. Enables investigation of cantilever and suspended section behavior, load distribution, and influence line construction. Includes instruction manual and optional computer-assist software with digital sensors and WiFi remote monitoring capability.
The Influence Line Apparatus FortiTestX-47 is designed for studying reactions under various load conditions at all supports along a three-span bridge structure. This Influence Line Apparatus features a cantilever end section and suspended center section with adjustable support locations, vertical force measurement at supports, and dial indicator deflection measurement for comprehensive structural analysis and influence line plotting.
Product Overview
The Influence Line Apparatus FortiTestX-47 demonstrates how loads moving across a bridge structure affect support reactions and internal reactions between cantilever and suspended sections. The three-span bridge comprises two end spans of 250 mm each and a center suspended span of 150 mm. The bridge structure allows investigation of influence lines for supports and internal reactions as loads traverse the beam. Four vertical force supports (ST 124 type) measure reaction forces at all support locations. Two rolling loads enable students to apply load at different positions across the bridge span. Two dial indicators (ST 131 type) measure deflection of the bridge at selected locations. The support locations are adjustable to enable variation of span configurations for different influence line studies. Vertical force supports provide direct measurement of loads transferred to each support point. The apparatus enables students to plot influence lines by recording reactions at each support as loads move progressively across the bridge structure. An instruction manual provides guidance on apparatus operation and experimental procedures. Optional learning software supports both online and offline training with data calculation and analysis by manual entry from analog measuring instruments. A computer-assist version includes digital sensors with data acquisition, real-time data logging, graphical analysis, data export capability, and optional WiFi remote monitoring on iOS and Android smartphones.
Influence Line Apparatus FortiTestX-47 — Technical Specifications
| Specification | Details |
|---|---|
| Equipment Type | Three-span bridge influence line apparatus |
| Bridge Configuration | Cantilever end sections with suspended center section |
| End Span Length | Two spans of 250 mm each |
| Center Span Length | 150 mm |
| Support Type | ST 124 vertical force supports (4 units) |
| Support Measurement | Direct vertical force measurement at all supports |
| Support Locations | Adjustable for configuration variation |
| Loading System | Two rolling loads for progressive load application |
| Deflection Measurement | ST 131 dial indicators (2 units) |
| Deflection Accuracy | Analog dial indicator measurement |
| Bridge Material | Structural steel or equivalent |
| Support Base | Rigid fixed base for apparatus stability |
| Shipping Dimensions | 35 cm W × 80 cm L × 15 cm H (unassembled) |
| Net Weight | Approximately 15 kg |
| Learning Software | Manual data entry version included |
| Optional Software | Computer-assist version with digital sensors |
| Optional Connectivity | WiFi remote monitoring (iOS/Android) |
Technical Data
Bridge Structure Assembly
- Configuration: Three-span continuous bridge with cantilever ends
- End spans: Two equal spans at 250 mm each
- Center span: Suspended span at 150 mm
- Support arrangement: Four vertical force supports at strategic locations
- Deflection points: Two locations for dial indicator measurement
Load Application System
- Rolling loads: Two units for progressive load positioning
- Load movement: Across all three spans for complete influence line development
- Load increment: Measurable at each support location
- Movement path: Full bridge length from one end to the other
Support System
- Support type: ST 124 vertical force supports
- Quantity: Four supports for all critical reaction measurement points
- Measurement: Direct vertical force indication
- Adjustability: Support locations variable for different configurations
- Force indication: Mechanical force measurement at each support
Deflection Measurement
- Instruments: ST 131 dial indicators
- Quantity: Two indicators for deflection measurement
- Measurement points: Adjustable locations on bridge structure
- Range: Analog dial scale reading
- Accuracy: Mechanical dial indicator precision
Mechanical Construction
- Bridge material: Structural grade steel
- Support base: Rigid foundation for apparatus stability
- Connection method: Removable support arrangement for configuration variation
- Assembly: Modular design for easy setup and reconfiguration
Learning Software and Data Analysis
- Standard version: Manual data entry for calculations and analysis
- Optional computer-assist: Digital sensors with automated data acquisition
- Features: Real-time data logging, graphical plotting, data export
- Connectivity: Optional WiFi for remote monitoring on iOS and Android
- Functionality: Influence line plotting, reaction calculation, deflection analysis
Key Features
- Three-span bridge structure: Demonstrates influence lines for supports and internal reactions in continuous Influence Line Apparatus beams
- Cantilever and suspended sections: Enables investigation of load effects on different structural configurations in Influence Line Apparatus
- Adjustable support locations: Allows variation of span configurations to study different Influence Line Apparatus conditions
- Vertical force supports: Four ST 124 units provide direct measurement of reactions at each Influence Line Apparatus support
- Rolling loads: Two units enable progressive load application across entire Influence Line Apparatus bridge span
- Dual deflection measurement: Two ST 131 dial indicators measure bridge deflection at selected locations in Influence Line Apparatus
- End span length: 250 mm per span provides adequate length for Influence Line Apparatus load positioning
- Center span length: 150 mm suspended span creates distinct structural behavior for Influence Line Apparatus analysis
- Influence line plotting capability: Reactions recorded at each support position enable Influence Line Apparatus influence line construction
- Rigid support base: Provides stable foundation for accurate Influence Line Apparatus measurements
- Modular assembly: Quick setup and reconfiguration of Influence Line Apparatus for different experimental conditions
- Analog force measurement: Direct indication of support reactions in Influence Line Apparatus
- Dial indicator deflection: Precise measurement of bridge movement at critical Influence Line Apparatus locations
- Optional learning software: Manual data entry version supports Influence Line Apparatus calculations and analysis
- Computer-assist option: Digital sensors enable automated data acquisition in Influence Line Apparatus experiments
- Remote monitoring capability: WiFi connectivity allows real-time Influence Line Apparatus data viewing on mobile devices
- Instruction manual: Comprehensive guidance for Influence Line Apparatus operation and experiments
- Portable design: Approximately 15 kg weight enables convenient movement within laboratory
Learning Objectives and Experiments
- Investigation of influence lines for support reactions on three-span Influence Line Apparatus
- Analysis of internal reactions between cantilever and suspended sections in Influence Line Apparatus
- Effect of load position on support reactions in Influence Line Apparatus
- Load distribution across multiple supports in Influence Line Apparatus bridge structure
- Relationship between load location and reaction magnitude in Influence Line Apparatus
- Deflection measurement at different bridge locations in Influence Line Apparatus
- Influence line construction by progressive load positioning in Influence Line Apparatus
- Effect of span length variation on influence line shape in Influence Line Apparatus
- Support reaction patterns in cantilever sections of Influence Line Apparatus
- Support reaction patterns in suspended center section of Influence Line Apparatus
- Comparison of theoretical and measured influence lines using Influence Line Apparatus
- Maximum reaction determination at each support in Influence Line Apparatus
- Load path and force transmission in Influence Line Apparatus structures
- Effect of load magnitude on measured reactions in Influence Line Apparatus
Construction and Design
The Influence Line Apparatus FortiTestX-47 is constructed with a structural steel bridge spanning three sections: two 250 mm end spans (cantilever configuration) and one 150 mm suspended center span. The bridge deck is supported at four locations by adjustable ST 124 vertical force supports that measure reaction forces at each support point. The support locations are adjustable to enable variation of span configurations and investigation of different structural conditions. Two rolling loads are positioned and moved progressively across the bridge span to create changing load conditions. As the loads move, reactions at each support are recorded using the vertical force support measurement scales. Two ST 131 dial indicators are positioned at selected locations on the bridge to measure vertical deflection resulting from applied loads. The bridge is mounted on a rigid, stable base that prevents unwanted movement during measurements. All connections are designed for quick disassembly and reassembly to facilitate apparatus reconfiguration between experiments. An instruction manual provides detailed guidance on setting up the Influence Line Apparatus, positioning loads, reading force and deflection measurements, and plotting influence lines from recorded data. Optional learning software can be integrated to assist with data analysis, calculation of reactions, and graphical representation of influence lines recorded during Influence Line Apparatus experiments.
Scope of Delivery
- Three-span bridge structure with adjustable support locations
- Two 250 mm end spans and one 150 mm center suspended span
- Four ST 124 vertical force supports for reaction measurement
- Two rolling loads for progressive load application
- Two ST 131 dial indicators for deflection measurement
- Fixed support base for apparatus stability
- Connecting rods and adjustment hardware
- Complete set of assembly components
- Instruction manual with operation procedures
- Learning software for manual data analysis (standard)
- Optional digital sensors and data acquisition system
- Optional computer-assist software package
- Optional WiFi connectivity module
- Carrying case or storage container
- Calibration certificates for measuring instruments
Required for Operation
- Level surface for apparatus placement
- Access to clean, dry laboratory environment
- Manual for reference during experiments
- Measuring instruments (force and deflection scales/indicators)
- Optional: Computer with software for digital version
- Optional: WiFi network for remote monitoring feature
Optional Accessories
- Computer-assist system with digital sensors
- WiFi remote monitoring module for iOS/Android
- Advanced learning software with graphical analysis
- Additional rolling loads for varied load conditions
- Supplementary dial indicators for enhanced deflection measurement
- Additional support configurations for expanded experiments
- Data acquisition and analysis software package
- Educational documentation on influence line theory
- Extended warranty and technical support package
Q: How does the Influence Line Apparatus FortiTestX-47 demonstrate influence lines?
A: As rolling loads move progressively across the three-span bridge, reactions are measured at each of the four vertical force supports. By recording reaction values at each support as the load moves across different positions, students plot influence lines showing the relationship between load position and support reaction magnitude in the Influence Line Apparatus.
Q: What is the purpose of having adjustable support locations in the Influence Line Apparatus FortiTestX-47?
A: Adjustable support locations allow students to modify the span configuration of the bridge, enabling investigation of how different structural arrangements affect influence line shapes and reaction patterns in the Influence Line Apparatus.
Q: How are reactions measured in the Influence Line Apparatus FortiTestX-47?
A: The Influence Line Apparatus includes four ST 124 vertical force supports that directly measure the vertical reaction force at each support point. As loads are positioned and moved across the bridge, students read the force measurements from each support to determine reactions for influence line construction.
Q: What do the dial indicators measure in the Influence Line Apparatus FortiTestX-47?
A: The two ST 131 dial indicators measure vertical deflection of the bridge structure at selected locations. As loads are applied and moved across the Influence Line Apparatus, students observe and record deflection values to understand the relationship between load position and bridge deformation.
Q: Can the Influence Line Apparatus FortiTestX-47 be used with computer-based data acquisition?
A: Yes, optional computer-assist versions include digital sensors with real-time data acquisition, graphical analysis, data export capability, and optional WiFi remote monitoring on iOS and Android devices for enhanced data collection and analysis in Influence Line Apparatus experiments.
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