Tunnel Convergence Measuring Point with Quick Fixing Device
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Solution Overview
Problem
The existing methods for measuring tunnel peripheral convergence using total stations are cumbersome, requiring complex tooling and synchronization with construction processes, leading to inefficiencies and increased risk of measurement errors due to human factors and environmental conditions.
Innovation Solution
A quick fixing device comprising a right-angle steel sheet, reinforcing steel sheets, a fastener with explosive powder loading, a reflective film, an information board, and a historical data QR code, which simplifies the installation and observation of measuring points by allowing for faster and more accurate data recording and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the traditional embedding method with welded steel sheet and reflective film is used, then the measurement function is achieved, but the installation process becomes extremely complicated and time-consuming
Solution Approach 1:
The patent combines the reflective film, information board, and mounting structure into an integrated measuring point assembly. The reflective film is directly mounted on the information board which is then fixed to the support structure as a single unit, eliminating the need for separate welding operations and multiple component assemblies. This integration maintains the measurement function while dramatically simplifying the installation process.
Solution Approach 2:
The measuring point system is divided into modular components: the information board with embedded reflective film, the mounting brackets, and the fastening system. This segmentation allows for pre-assembly of the measurement function elements, which can then be quickly installed as a complete module without requiring complex on-site welding or assembly operations.
2Reliability
If the measuring point is buried during construction synchronization, then the measurement function is maintained, but the construction progress is significantly delayed
Solution Approach 1:
The measuring point assembly with reflective film and information board is pre-assembled and prepared before the construction process begins. The mounting brackets and fastening systems are readied in advance, allowing for rapid installation during construction without requiring time-consuming welding operations or complex assembly procedures on-site.
Solution Approach 2:
The patent replaces the traditional welding-based mechanical attachment system with a faster fastening system. Instead of requiring welding operations to attach the steel sheet with reflective film, the design uses mechanical fasteners and mounting brackets that can be quickly installed without thermal processes, significantly reducing installation time and allowing construction to proceed without delay.
3Measurement precision
If the reflective film is placed on the steel sheet, then the total station measurement is enabled, but the observing point cannot be clearly seen when the surveyor is behind the steel sheet
Solution Approach 1:
The patent adds a third dimension to the reflective film arrangement by extending it beyond the plane of the information board. The reflective film is mounted to extend from the front surface of the information board toward the rear, creating a multi-dimensional reflective surface that can be observed from multiple angles including positions behind the main board structure.
Solution Approach 2:
The reflective film is strategically positioned and extended to specific locations where observation is needed. By extending the reflective film to the rear side of the information board structure, the design ensures that surveyors positioned behind the main display area can still clearly observe the measurement point, while the front surface maintains its information display function.
4Strength
If the exposed end of the embedded rebar is welded with steel sheet, then the structural strength is ensured, but the installation process becomes extremely complicated requiring multiple tools and synchronization
Solution Approach 1:
The patent extracts the welding operation from the installation process entirely. Instead of requiring welding to attach the steel sheet to the embedded rebar, the design uses mechanical mounting brackets that clamp onto the rebar or attach to the support structure. This extraction of the welding step eliminates the need for specialized welding tools, skilled welders, and complex synchronization with construction processes.
Solution Approach 2:
The mounting brackets and fastening systems used in the design are simple, inexpensive mechanical components that can be quickly installed and removed if needed. These replace the permanent welded steel sheet attachment, allowing for easier installation, adjustment, and potential repositioning without requiring complex welding operations or specialized tools.
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
The solution significantly improves operational efficiency, reduces measurement errors, and enhances the stability of the device by streamlining the installation process and providing easy access to historical data, thus facilitating safer and more accurate on-site measurements.
Implementation Method 1
a fastener (3), wherein an explosive powder loading portion is arranged at a rear end of the fastener (3)
Data Source
AI summary
The present application relates to tunnel monitoring and measuring, more particularly, to a quick fixing device for measuring a tunnel peripheral convergence and an application method thereof. A right-angle steel sheet includes a first steel sheet and a second steel sheet which are vertically fixed with each other. The fastener vertically penetrates the first steel sheet, and an explosive powder loading portion on a rear end of the fastener is arranged at a side of the second steel sheet. The reinforcing steel sheet is respectively connected to the first steel sheet and the second steel sheet as a reinforcing bar. A through hole is provided on the reinforcing spacer, through which the reinforcing spacer is sleeved on the fastener. The reinforcing spacer is arranged between the explosive powder loading portion on the rear end of the fastener and the first steel sheet.