Segmental Track-Changing Sliding Construction for Unequal Spans
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional accumulative sliding construction methods are not applicable to unequal-span structures, leading to labor-intensive, time-consuming, and unsafe construction practices, as they cannot accommodate varying intervals of sliding shoes or sliders on main trusses and beams.
Innovation Solution
A segmental track-changing and accumulative sliding construction method using hydraulic thrusters, where the structure is divided into sliding sections with offset track segments, and temporary lengthening auxiliary structures are used to adapt to different span lengths, allowing for smooth sliding and track gauge changes, facilitated by hydraulic thrusters and anti-overturning devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If traditional accumulative sliding construction method is used, then construction can be mechanized and automated, but it cannot accommodate varying intervals of sliding shoes or sliders on main trusses and beams with different spans
Solution Approach 1:
The sliding track is divided into multiple track segments with different track gauges corresponding to different span intervals. Each track segment can be independently designed and installed to match the specific span requirements of adjacent main trusses, enabling the system to accommodate varying intervals while maintaining mechanized construction capabilities.
Solution Approach 2:
The construction method introduces dynamic adjustment capabilities through adjustable sliding shoes and sliders that can be positioned at different intervals along the track segments. This dynamic positioning allows the system to adapt to unequal spans while maintaining automated sliding construction operations.
2Adaptability or versatility
If extensive, labor-intensive construction mode is used for unequal-span structures, then construction can be completed, but it is time-consuming and laborious
Solution Approach 1:
The structure is segmented into multiple sliding sections with different track gauges, allowing each section to be constructed independently using standardized accumulative sliding methods. This segmentation enables mechanized construction to proceed efficiently across unequal spans without requiring manual adaptation for each unique span configuration.
Solution Approach 2:
The method changes the track gauge parameter along the length of the structure to match different span intervals. By systematically varying the track gauge parameter rather than using fixed track geometry, the system enables efficient mechanized construction of unequal-span structures while maintaining high productivity.
3Adaptability or versatility
If extensive, labor-intensive construction mode is used for unequal-span structures, then construction can be completed, but construction quality and safety are not easy to ensure
Solution Approach 1:
The method replaces manual mechanical positioning with automated hydraulic thruster systems that precisely control the sliding process. This substitution of manual operations with automated mechanical systems ensures consistent construction quality and enhances safety by eliminating human error in critical positioning tasks.
Solution Approach 2:
The construction system incorporates feedback mechanisms through precise measurement and control systems that monitor the sliding process in real-time. This feedback enables automatic adjustment of sliding parameters to maintain construction quality and safety standards throughout the accumulative sliding construction of unequal-span structures.
4Device complexity
If fixed track gauge is used, then sliding construction can be simplified, but it cannot match various intervals of sliding shoes or sliders on main trusses with different spans
Solution Approach 1:
The track is segmented into multiple sections with different track gauges, allowing each segment to be designed simply for its specific span interval while the overall system adapts to varying spans. This segmentation maintains local simplicity while achieving global adaptability.
Solution Approach 2:
Different track gauge specifications are applied locally to different segments of the track according to the specific span requirements of adjacent main trusses. This local differentiation allows the track design to be simple within each segment while the overall system adapts to varying span intervals through strategic local variations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables efficient, mechanized, and automated construction of unequal-span structures, reducing labor costs and ensuring quality and safety, while overcoming the limitations of traditional methods by allowing for smooth sliding and track gauge changes.
Implementation Method 1
pushing the first main truss and/or beam away from the assembly platform along the sliding track by the hydraulic thrusters
Data Source
AI summary
Provided is an accumulative sliding construction method of segmental track-changing for unequal-span structure, which divides the unequal-span structure into at least two sliding sections according to span variation, and a plurality of track segments corresponding to the spans of each sliding section. By providing sliders on the main truss/beam of each sliding section at positions corresponding to the track segments that each main truss/beam need to pass through, the sliding section smoothly passes through the sliding track segments to be in position; in addition, the main truss/beam of each sliding section is provided with temporary lengthening auxiliary structure or divided into an initial-mounted unit and rear-mounted units to allow the main truss/beam of each sliding section to pass through the track segments smoothly and to be in place.