Do non-traditional aisle designs outperform traditional ones? A comparative study for order picking warehouses
研究了非传统通道布局在订单拣选仓库中的效果，发现传统正交通道在长拣货单环境下表现良好，而新提出的径向布局（如卡尔斯鲁厄模式）虽改进有限（<5%），但为实践者提供了简洁的设计规则。
Warehousing and distribution tend to be the most labour-intensive component of logistics. Moreover, these have become more important with the explosion of online purchases, especially with expedient shipping. Recently, significant advances in aisle designs for unit-load, that is, single-pick, warehouses have achieved up to a 20% reduction in the expected travel distance. However, the effectiveness of these designs for general order-picking has been little investigated. The research herein addresses this by thorough examination of optimal designs that embrace a wide range of possibilities considering different order picking characteristics. The results suggest that the historic practices of orthogonal pick and cross aisles perform surprisingly well for a wide variety of order picking environments especially those with longer pick lists. The benefits of alternative designs over traditional configurations are modest with improvements of less than 5%. However, our extensive experimentation and analysis show a potentially useful new design schema that emulates the Karlsruhe, or Moscow, radial motif. This appears repeatedly and places the depot, counter-intuitively, at the centre of the long side, rather than where the cross aisles meet. Furthermore it is very different from conventional orthogonal aisles. The findings are synthesised into a straightforward concise set of design rules for practitioners.