8LWR Seismic Analysis, Water Treatment Facility, Waikari, New Zealand
Mechanical Structural Analysis
EPES were engaged by Pall Australia to perform an earthquake loading analysis of the 8LWR structure designed by Pall for support of water treatment equipment in the Waikari region of New Zealand.
Analysis was performed in accordance with NZS 1170.5 Earthquake Actions New Zealand and AS/NZS 4100 Steel Structures. The water treatment facility is required to remain operational following an earthquake with a design life of 80 years.
EPES were to determine of the structure would satisfy the standards requirements for seismic loading in this region.
Project Information
Location: Waikari, New Zealand
Client: Pall Australia
Engagement: Specialist Finite Element Analysis
Sectors: Industrial, Water and Waste Water
Services: Construction and Design Consulting, Digital Engineering, Infrastructure Engineering, Piping Engineering, Specialist Analysis, Water and Waste Water
Year: 2019
The Problem
The region has high seismic activity and high design loadings were calculated due to the stringent requirements of NZS 1170.5 and the requirement for the water treatment facility to remain in operation shortly after a design seismic event.
Analysis and Implementation
EPES utilised AS/NZS 1170.0 and AS1170.1 to determine design loadings for the proposed VR structure and MF module rack assembly. Design analysis was undertaken following NZS 1170.5 and application of Finite Element Analysis (FEA) using SolidWorks.
Analysis determined that for the MF Rack Assembly, higher than acceptable deflections were evident in the analysis and that in order to satisfy the design criteria, additional bracing was recommended. The VR frame was within acceptable limits.
Outcome
We identified deficiencies in the designed structure and methods required to rectify in order to achieve compliance with the local New Zealand earthquake design requirements. This was validated using Finite Element Analysis (FEA).
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