天空开阔度的测度与影响因素回顾

Measurement of Sky View Factor and Review of Influencing Factors

天空开阔度常被作为描述天空被建筑物阻挡程度的形态学参数,在高密度城市发展背景下,天空开阔度是一个有效的、可连续评价城市外部区域采光潜力的指标。为充分挖掘天空开阔度在评价城市天然采光时的潜力,需明确其测度原理、步骤,以及相关影响因素。本文对天空开阔度的测度方法进行系统化梳理,分析不同方法的优劣势及适用场景,总结影响天空开阔度的城市形态学因素,为未来城市的采光评估提供参考。

The Sky View Factor(SVF)is often used as a morphological parameter to describe the degree of which the sky is blocked by buildings.In the context of high-density urban development,sky view factor is an effective and continuously evaluable indicator of the daylighting potential in urban outdoor areas.To fully explore the potential of sky view factor in evaluating urban natural daylighting,it is necessary to clarify its measurement principles,steps,and related influencing factors.This article systematically sorts out the measurement methods of sky view factor,analyzes the advantages,disadvantages,and applicable scenarios of different methods,and summarizes the urban morphological factors that affect sky view factor,providing references for the daylighting assessment of future cities.