This article based on the topology optimization theory， take the structure greatest rigidity as the objective function， used the ANSYS topology optimization function to carry on the arrangement optimization to three arm support arc profile steel strobe， has obtained three arm support arc profile steel strobe's reasonable structural arrangement And unified the example to carry on the static mechanical analysis comparison to the optimized After the result demonstrates the topology optimization strobe structure its intensity， the rigidity and the stability have certain Surpasses the primitive arrangement This method may provides certain reference value for the water conservancy project steel strobe's design and the innovation
