夏热地区基于风热舒适度的城市设计评价研究
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摘要
夏热地区室外空间风热舒适度对于城市生活品质有直接影响,合理的城市设计可有效提升风环境热舒适度。选取广州南沙新区明珠湾起步区横沥商务办公中心前期城市设计方案为案例进行研究,利用数值模拟手段,以两个评价层面(区域整体风热场和不同活动类型场所空间风场)为出发点,对横沥商务办公中心风热舒适度进行评价;结果发现北部下游建筑群内存在较大风影区,办公围合街区人行道上风热舒适度较差。针对现存设计的风热环境问题,从街区风道调整、建筑群高度控制、建筑单体优化三方面调整方案缺陷并模拟验证其有效性,实现城市设计方案实施前可能带来的潜在风热影响评价,为未来城市气候可持续性建设提供辅助决策支持,以全面提升商务街区环境品质、整体优化微气候。
引文
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