Function-Recovering Shear Wall with X-Shape Dampers
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Solution Overview
Problem
Traditional reinforced concrete shear walls suffer from severe structural deformation and insufficient energy-dissipating capacity during earthquakes, leading to significant residual deformation and difficulty in quick function recovery.
Innovation Solution
A function-recovering energy-dissipating reinforced concrete shear wall design incorporating high-strength reinforcing materials, X-shaped dampers, and a rhombic structure with movable hinges and steel plate connecting rods, along with energy-dissipating materials, to enhance seismic performance and enable quick post-earthquake recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-strength steel bars or steel strands are arranged in the shear walls to improve elastic performance and reduce residual deformation, then the shear wall can quickly recover after earthquake, but the energy-dissipating capacity becomes seriously insufficient
Solution Approach 1:
The invention divides the shear wall into multiple functional segments: the wall body structure and four independently arranged dampers in an X-shape. This segmentation allows the dampers to specialize in energy dissipation while the wall body maintains structural integrity and elastic recovery, resolving the contradiction between function recovery and energy dissipation.
Solution Approach 2:
The dampers act as intermediary elements between the earthquake load and the wall body. They absorb and dissipate seismic energy through viscous damping mechanisms, protecting the main wall structure from excessive deformation while enabling quick recovery. The dampers mediate the energy transfer that would otherwise cause severe structural damage.
2Strength
If traditional reinforced concrete shear walls are designed to resist seismic loads through elastic-plastic deformation, then the bearing capacity is maintained, but severe structural deformation and large residual deformation occur resulting in difficult recovery
Solution Approach 1:
The dampers are pre-installed in the shear wall structure to provide beforehand cushioning against seismic loads. They are positioned to absorb energy before severe deformation occurs, preventing the wall body from undergoing damaging elastic-plastic deformation and large residual deformations that would require demolition and rebuilding.
3Loss of energy
If the shear wall dissipates seismic energy through elastic-plastic deformation to maintain bearing capacity, then the energy dissipation function is achieved, but the structure suffers damage requiring demolition and rebuilding
Solution Approach 1:
The invention extracts the energy dissipation function from the wall body structure and places it in separate, dedicated damper components. This allows the wall body to remain elastic and undamaged while the dampers absorb and dissipate seismic energy, making the structure recoverable rather than requiring demolition and rebuilding.
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 design significantly improves seismic performance by enhancing energy-dissipating capacity and reducing residual deformation, allowing for quick function recovery and safe reuse of buildings after earthquakes.
Implementation Method 1
four dampers distributed in an X-shape between a front reinforcement fabric and a rear reinforcement fabric
Implementation Method 2
the sealing cavity is filled with an energy-dissipating material
Data Source
AI summary
A function-recovering energy-dissipating reinforced concrete shear wall comprising a reinforced concrete shear wall body, common steel bars distributed in vertical direction within the reinforced concrete shear wall body, common steel bars distributed in horizontal direction within the reinforced concrete shear wall body, high-strength reinforcing materials arranged on left and right sides of the shear wall, and four dampers arranged in an X-shaped cross mode between a front reinforcement fabric and a rear reinforcement fabric that are formed by common steel bars distributed in vertical direction and common steel bars distributed in horizontal direction; a cylindrical piston rod having a hinge hole is arranged at the end portion of each damper.