针对当前滨湖绿道普遍存在的与居民日常生活脱节、空间形态单一、功能复合度不足等问题,提出基于日常生活理论视角的“环湖为核、林荫为簇”的绿道网络构形假设。以武汉沙湖滨湖区域为例,构建“点-线-权”的绿道网络构形框架,将交通通...针对当前滨湖绿道普遍存在的与居民日常生活脱节、空间形态单一、功能复合度不足等问题,提出基于日常生活理论视角的“环湖为核、林荫为簇”的绿道网络构形假设。以武汉沙湖滨湖区域为例,构建“点-线-权”的绿道网络构形框架,将交通通勤、商业服务、文化活动与体育健身等日常情景兴趣点(point of interest,POI)作为点要素,满足植被覆盖率标准的林荫道作为线要素,借助UNA工具开展多情景路径模拟与使用频次量化分析。结果显示:研究区域内构形的绿道网络呈现“多簇网状”的复杂结构,约51.49%的道路未与任何生活情景重叠,主要分布于湖区外围。高重叠(≥5类情景)路段仅占总长度的32.46%,说明高频生活走廊在整体绿道网络中比例有限、分布集中,且居民日常高频使用的路径主要由密度高、长度短的内部道路构成。沙湖现状绿道与高频日常路径错位率较高,沙湖现有绿道覆盖约9.3%的日常活动POI,构建的网络将覆盖度提升至约48.76%,显著增强了绿道与居民日常出行链条的耦合程度。展开更多
In this paper, dynamic soil parameters derived from Dalian area seismic risk assessment reports are collected. In this study, the measurement data is divided into 7 types, i.e. silty clay, muddy silty clay, clay, medi...In this paper, dynamic soil parameters derived from Dalian area seismic risk assessment reports are collected. In this study, the measurement data is divided into 7 types, i.e. silty clay, muddy silty clay, clay, medium sand, rock fragments, backfill soil and fully-weathered slate. Statistics of the dynamic parameters of these soils are carried out to obtain the mean values of dynamic shear modulus ratio and damping ratio. Typical drill holes are selected to establish dynamic soil models to investigate the seismic response for various cases. The dynamic parameters of the models are taken from the statistical values of this study, the standard values of code 94 (i.e. the dynamic soil parameters for Dalian seismic microzonation), and the recommended values by Yuan Xiaoming et al. (2000) respectively. The calculated results of peak ground acceleration are compared with the response spectral characteristics. The results show that the statistical values are approximate to the values recommended by Yuan Xiaoming, et al. (2000), but different greatly with the standard values in code 94.展开更多
文摘针对当前滨湖绿道普遍存在的与居民日常生活脱节、空间形态单一、功能复合度不足等问题,提出基于日常生活理论视角的“环湖为核、林荫为簇”的绿道网络构形假设。以武汉沙湖滨湖区域为例,构建“点-线-权”的绿道网络构形框架,将交通通勤、商业服务、文化活动与体育健身等日常情景兴趣点(point of interest,POI)作为点要素,满足植被覆盖率标准的林荫道作为线要素,借助UNA工具开展多情景路径模拟与使用频次量化分析。结果显示:研究区域内构形的绿道网络呈现“多簇网状”的复杂结构,约51.49%的道路未与任何生活情景重叠,主要分布于湖区外围。高重叠(≥5类情景)路段仅占总长度的32.46%,说明高频生活走廊在整体绿道网络中比例有限、分布集中,且居民日常高频使用的路径主要由密度高、长度短的内部道路构成。沙湖现状绿道与高频日常路径错位率较高,沙湖现有绿道覆盖约9.3%的日常活动POI,构建的网络将覆盖度提升至约48.76%,显著增强了绿道与居民日常出行链条的耦合程度。
文摘In this paper, dynamic soil parameters derived from Dalian area seismic risk assessment reports are collected. In this study, the measurement data is divided into 7 types, i.e. silty clay, muddy silty clay, clay, medium sand, rock fragments, backfill soil and fully-weathered slate. Statistics of the dynamic parameters of these soils are carried out to obtain the mean values of dynamic shear modulus ratio and damping ratio. Typical drill holes are selected to establish dynamic soil models to investigate the seismic response for various cases. The dynamic parameters of the models are taken from the statistical values of this study, the standard values of code 94 (i.e. the dynamic soil parameters for Dalian seismic microzonation), and the recommended values by Yuan Xiaoming et al. (2000) respectively. The calculated results of peak ground acceleration are compared with the response spectral characteristics. The results show that the statistical values are approximate to the values recommended by Yuan Xiaoming, et al. (2000), but different greatly with the standard values in code 94.
