Pier-Like Base Isolation System for Seismic Protection
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Solution Overview
Problem
Existing base isolation systems are costly and not commercially viable for smaller structures, making them prone to damage during earthquakes and other ground movements, as they are primarily designed for larger buildings in seismic zones.
Innovation Solution
A pier-like base isolation system using intermediary pillars with fixed and movable ends to create a spaced apart relationship between the first and second members, allowing for adjustable installation and post-event repositioning, which can be applied to both smaller and larger structures, including single or two-storey dwellings, and is designed to absorb and dampen force loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional base isolation systems are used, then seismic protection is improved, but cost increases making them unviable for smaller structures
Solution Approach 1:
The base isolation system is segmented into multiple independent pillars distributed across the structure. Each pillar functions as an independent isolation unit, allowing the system to be scaled appropriately for smaller structures while maintaining seismic protection effectiveness. This segmentation enables cost-effective implementation by using only the necessary number of pillars for the specific structure size.
Solution Approach 2:
The patent employs simpler, more cost-effective pillar designs using readily available materials and construction methods. The system uses basic structural elements like steel or concrete pillars with simple isolation mechanisms, replacing complex expensive systems with affordable alternatives suitable for smaller structures.
2Reliability
If base isolation systems are designed for large buildings, then seismic protection is improved, but adaptability to smaller structures deteriorates
Solution Approach 1:
The pillar-based base isolation system is designed with universal applicability across different structure sizes and types. The same fundamental pillar design can be used for single-storey dwellings, two-storey buildings, and larger structures by simply adjusting the number and spacing of pillars. This universality enables the system to adapt to various applications from small residential buildings to larger commercial structures.
Solution Approach 2:
The system allows dynamic adjustment of the isolation configuration. Pillars can be positioned and spaced according to the specific requirements of each structure, and the isolation characteristics can be modified by changing pillar spacing, height, or material properties. This dynamic adaptability enables effective seismic protection across a wide range of structure sizes and types.
3Stability of the object's composition
If members are fixed closely together, then structural stability is improved, but ground clearance in flood-prone areas deteriorates
Solution Approach 1:
The pillar-based isolation system introduces intermediary elements between the structure and ground that provide both stability and clearance. These pillars act as mediators that maintain structural stability through their vertical support function while simultaneously providing the necessary ground clearance by elevating the structure. The spaced arrangement of pillars achieves both objectives without compromising structural integrity.
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 provides cost-effective base isolation for smaller structures, offers adjustable and versatile installation, enhances ground clearance in flood-prone areas, and effectively addresses seismic and wind loading events, maintaining structural integrity and minimizing damage.
Implementation Method 1
the pillars dampen transfer of movement between the members by the movable pillar end moving relative to the movable first or second member thereby reducing the degree of energy transfer between the members
Data Source
AI summary
Described herein is a base isolation system utilising a pier-like assembly comprising intermediary elements such as pillars isolating a first member and a second member, the second member above the first member and the members in a spaced apart relationship with intermediary elements therebetween. In one aspect, a base isolation system is provided comprising a first member and a second member, the second member being above the first member, the members being in a spaced apart relationship separated by pillars; and wherein each pillar comprises a pillar fixed end and an opposing pillar movable end. In the event of relative movement between the first and second member, the pillars dampen transfer of movement between the members by the movable pillar end moving relative to a movable first or second member thereby reducing the degree of energy transfer between the members. A method of installing a base isolation system is also described herein.