Synergy of Road Network Planning Indices on Central Retail District Pedestrian Evacuation Efficiency

Pedestrian evacuation is an important measure to ensure disaster safety in central retail districts, the efficiency of which affected by synergy road network planning indices. This paper established typical forms district (CRD) networks terms block form, structure and grade, taking China as example. The experiment was designed using orthogonal design (ODOE) method quantified time under different indices levels through Anylogic simulation platform. Using range variance analysis methods, density, connectivity, type width on pedestrian were studied from perspectives significance, importance optimal level. results showed that CRD will affect indices, connectivity insignificant (P 0.477/0.581) synergy; with wide primary roads (30.1~40.0 m), medium secondary (3.1~5.0 m/side) high density (11.0~13.0 km/km2) have highest efficiency. From perspective evacuees, this put forward urban implications improve their capacity for prevention reduction.