Underground Pipe Rack Sliding Support for Seismic Damping
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Solution Overview
Problem
Current underground integrated pipe racks lack sufficient damping and aseismic capacity, leading to potential cracking and collapse during earthquakes, which can result in damage to the pipelines.
Innovation Solution
A system comprising a pipe fixing assembly with lifting frames and a lifting mechanism, including telescopic springs and sliding chutes, to absorb vibrations and reduce the risk of hard contact between pipes and vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the pipe rack is built rigidly into the soil layer, then the structural stability is improved, but the damping capacity and aseismic capacity deteriorate, leading to cracking and collapse during earthquakes
Solution Approach 1:
The patent transforms the rigid fixed support into a dynamic sliding support system. The pipe rack can now slide horizontally along the longitudinal direction of the tunnel through sliding components, allowing the structure to adapt dynamically to seismic movements rather than resisting them rigidly, thereby improving aseismic capacity while maintaining structural stability
Solution Approach 2:
The patent changes the boundary condition parameter from fixed support to sliding support. By introducing sliding components with controlled friction characteristics, the system alters the mechanical parameters of the support, enabling the pipe rack to move with earthquakes rather than against them, thus resolving the contradiction between stability and aseismic capacity
2Reliability
If the pipe rack is made more flexible to absorb vibrations, then the damping capacity is improved, but the structural strength deteriorates, potentially leading to collapse
Solution Approach 1:
The patent segments the pipe rack structure into modular units that can slide independently along the tunnel. This segmentation allows each module to absorb vibrations independently through controlled sliding, providing damping capacity while the overall segmented structure maintains structural integrity and strength
Solution Approach 2:
The patent introduces sliding components as intermediary elements between the pipe rack and the tunnel wall. These intermediaries absorb and dissipate vibrational energy through friction and controlled movement, providing damping capacity while protecting the main structural components from direct stress, thus maintaining structural strength
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 system effectively enhances the damping and aseismic capacity of underground pipe racks by absorbing vibrations through telescopic springs and sliding chutes, thereby protecting the pipes from damage during seismic events.
Implementation Method 1
The spherical slide block is slidingly mounted in the arc sliding chute on the pipe holder on the adjacent side, and the spherical slide block is fixedly connected with the arc sliding chute through a telescopic spring
Implementation Method 2
One side of the said lifting frame is slidingly connected to the inner wall of the underground space
Data Source
AI summary
The invention discloses a system for enhancing the damping and aseismic capacities of an underground integrated pipe rack. It includes a pipe fixing assembly installed on the inner walls of the underground space on both sides. The assembly comprises multiple lifting frames arranged vertically and a lifting mechanism. The telescopic end of the lifting mechanism is fixedly connected to the lowermost lifting frame. One side of the lifting frame is slidingly connected to the inner wall of the underground space and features a recess for placing the pipe. A pipe holder inside the recess secures the pipe. During vibrations, the lifting frame slides on the inner wall, causing relative movement between adjacent pipe holders. The vibration is absorbed by the telescopic spring, preventing hard contact between the pipe and the vibration source. This reduces vibration and protects the pipe, thereby enhancing the aseismic capacity of the underground pipe rack.