Welcome to a comprehensive guide on seismic joint design using ProtaStructure Suite, an innovative software by Prota Software Inc. This blog will demystify the calculation details of seismic joint conditions based on European Standard EC8 Clause 18.104.22.168. Whether you are an engineer, architect, or construction professional, this blog will equip you with the knowledge needed to ensure structural safety during seismic events.
Seismic joints play a crucial role in protecting buildings during earthquakes, allowing them to move independently and mitigating potential damage. ProtaStructure Suite offers a user-friendly interface that automatically lists story displacements for a given building model in both X and Y directions. Users have the flexibility to set second model displacements manually or use the "Second Model" option to import data from another model.
1-Buildings Belonging to the Same Property:
When two structurally independent units belong to the same property, the seismic joint condition is determined based on EC8 22.214.171.124 (2) b. The distance between the buildings should not be less than the square root of the sum of the squares (SRSS) of their maximum horizontal displacements at the corresponding level.
2-Buildings Not Belonging to the Same Property:
For buildings or units not belonging to the same property, the seismic joint condition is based on EC8 126.96.36.199 (2) a. The distance from the property line to potential points of impact should not be less than the maximum horizontal displacement of the building at the corresponding level.
ProtaStructure Suite's "Seismic Joint Design" interface empowers users to set conditions from EC8 directly. The "Storey levels are same" and "Buildings belong to same property" options are available to customize the analysis. Additionally, users can adjust the minimum distance referred to by multiplying it by 0.7 if floor elevations are the same for adjacent buildings.
To calculate the seismic joint, users input the story displacements of the current model (δ1(i)) and the second model (δ2(i)). Since the buildings belong to the same property, calculations are performed based on EC8 188.8.131.52 (2) b. The calculated seismic joint is reduced by 0.7, adhering to EC8 184.108.40.206 (3), and should not be less than 8.2 mm. A suggested seismic joint of 10 mm is recommended.
This blog has provided an insightful overview of seismic joint design using ProtaStructure Suite, ensuring structural integrity and safety during seismic events. Empower your projects with this advanced software and make seismic joint design a breeze. Remember, when it comes to seismic resilience, ProtaStructure Suite has you covered.
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Note: For the full calculation details and comprehensive insights, refer to the original document.