Asymmetric Integral Lifting with Dragging Device
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Solution Overview
Problem
The challenge in modern architectural construction is the difficulty in lifting integral structures with eccentric centroid of lifting points from the gravity center, leading to high-altitude work risks, unsteady construction quality, and prolonged site periods due to irregular and asymmetrical supporting points.
Innovation Solution
A method for asymmetric integral construction lifting that involves determining optimal lifting points, using a dragging device to stabilize the structure, and employing a lifting system with sensors to ensure stability and safety, allowing for pre-welding on the ground and minimizing high-altitude work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-altitude piecemeal assemble method is used, then the construction can be completed with irregular and asymmetrical supporting points, but the safety risk increases and construction quality becomes unsteady
Solution Approach 1:
The construction is divided into multiple segments that can be assembled piecemeal at high altitude, allowing the structure to adapt to irregular and asymmetrical supporting points while maintaining safety through controlled segmentation of the assembly process
Solution Approach 2:
The construction method employs dynamic adjustment capabilities during high-altitude assembly, allowing workers to adapt to varying supporting point positions and maintain stability throughout the piecemeal assembly process
2Adaptability or versatility
If high-altitude piecemeal assemble method is used, then the construction can accommodate asymmetrical structures, but the construction quality becomes unsteady due to bad welding conditions
Solution Approach 1:
The structure is segmented into components that can be pre-assembled and welded under controlled conditions, then lifted and positioned at the final location, ensuring high welding quality while maintaining adaptability to asymmetrical configurations
Solution Approach 2:
Critical welding and assembly operations are performed preliminarily on the ground under controlled conditions before final installation, ensuring high manufacturing precision while maintaining the ability to accommodate asymmetrical structures at the installation site
3Adaptability or versatility
If high-altitude piecemeal assemble method is used, then the construction can be completed with irregular supporting points, but the working period on site is prolonged
Solution Approach 1:
Extensive assembly, welding, and preparation work is performed preliminarily on the ground under controlled conditions, reducing the duration and complexity of high-altitude work and thereby shortening the overall working period on site while maintaining adaptability to irregular supporting points
Solution Approach 2:
The construction process is organized to maintain continuous useful action through careful planning of lifting sequences and assembly operations, minimizing idle time and ensuring that each phase flows smoothly into the next, thereby reducing the overall working period
4Ease of manufacture
If integral lifting method is used with eccentric lifting points, then the construction can be lifted as a whole, but the centroid of lifting points becomes greatly eccentric from the gravity center
Solution Approach 1:
The lifting system is designed to accommodate and compensate for the asymmetry between the centroid of lifting points and the gravity center of the construction, using asymmetric counterweights or adjustable lifting mechanisms to restore balance during the lifting process
Solution Approach 2:
Counterweight mechanisms are employed to compensate for the eccentricity between lifting points and gravity center, creating balancing forces that restore stability during integral lifting of the construction
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 reduces high-altitude risks, ensures construction quality, and shortens site working periods by stabilizing the lifting process and allowing for pre-welding, thus providing a safer and more efficient lifting solution for asymmetric integral construction.
Implementation Method 1
a hydraulic pump source system disposed on the lifting frame, a hydraulic lifting machine connected with the hydraulic pump source system via a hydraulic oil line
Implementation Method 2
sensors which are disposed on the hydraulic lifting machine, to monitor the lifting synchronism of all lifting points during the integral construction lifting
Implementation Method 3
arranging a dragging device between the dragging point and the ground projection point, so as to ensure the stability during asymmetric construction lifting
Data Source
AI summary
A method for lifting an asymmetric integral construction is provided, including the steps of determining proper lifting points on a construction to be lifted according to the position relationship between the construction and a base supporter, setting a dragging point on the bottom of the construction, the dragging point being located on the extension line of the connection between the gravity center of construction and the centroid of the lifting points, determining a projection point of the dragging point on the ground, arranging a dragging device between the dragging point and the projection point, installing a lifting system at a proper position, conducting lifting operation by means of the lifting system cooperated with the dragging device, and rectifying and fixing the construction after it is in place.