Engineering Analysis


AMP Building Analysis, Auckland, NZ

The AMP building is a 14 story office tower, located in central Auckland and built in the early 1970's.

Compusoft Engineering Ltd. (CEL) was engaged to undertake a seismic analysis of the exiting reinforced concrete superstructure incorporating a proposed 4 additional floors.

A series of models were created using the finite element analysis package ETABS to develop a set of seismic loadings for use in the structural evaluation of the existing building and design of new floors. Wind sensitivity studies were also undertaken on the structure to demonstrate that wind induced vibration would not effect the serviceability of the building.

Westfield 277 model

Darfield Dairy Facility Seismic Analysis, Darfield, NZ

Compusoft Engnineering Ltd. (CEL) was engaged to undertake a seismic analysis of the Darfield dryer facility, a large reinforced concrete structure using the finite element analysis package ETABS.

Significant cost savings were achieved by use of non-linear pushover and time history analyses to verify that satisfactory rocking performance could be achieved by allowing foundation uplift, thus avoiding the need to install pile foundations.

Structural irregularities in both mass distribution and stiffness added considerable complexity to the analysis.

This project was the subject of a well received paper presented at the 2012 NZSEE Conference:

Brooke, N J, Davidson, B J, Blain, S, and Clark, P (2012) Efficiency by Analysis: The Fonterra Dryer Plant, Darfield. in Proc. NZSEE Conference. Christchurch, New Zealand.

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Northbound Secondary Inspection Canopy Proposed Construction Sequence, U.S Land Port of Entry, San Ysdiro, U.S.A

Compusoft Engineering was responsible for the model development and erection sequence for the Northbound Secondary Inspection Canopy at the U.S Land Port of Entry, San Yisidro.

A three dimensional finite element analysis model was formed in the state of the art software package SAP2000. The analysis model developed considers a range of non-linear behaviour including (but not limited to) a) geometric non-linearity of cable elements, b) staged construction modelling and c) second order effects (P-).

The SAP2000 analysis model was capable of replicating the following staged construction sequence and providing structural element stress output at each stage of the construction sequence.