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珠江河口无测潮站水域设计水位分析计算 预览

Analysis of Design Water Levels in Pearl River Estuary Without Level Station
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摘要 设计水位是确定建筑物结构安全的基础参数之一,更是工程设计标准的重要组成。对于无测潮站水域,其设计水位的确定是设计阶段需要考虑的重要难题。对于受径流和潮流共同作用的河口,除了考虑对代表站点进行统计分析外,还需考虑洪潮遭遇后设计洪潮水面线的计算成果。以交椅湾为例,筛选代表水文站,实测资料统计分析采用统计学方法对舢舨洲多年实测潮位进行统计分析,洪潮遭遇设计水面线计算采用珠江三角洲整体二维水动力及风暴潮数学模型进行计算。对比两者的计算结果,推荐1993、1983的年极值进行特大值处理后的统计成果为推荐设计水位成果,其更能反映当前条件下的水位情况及变化趋势,为珠三角潮位站设计水位成果修订提供参考依据。 Design water level is one of the basic parameters to determine the structure safety of buildings,and it is the important component of engineering design standards.The determination of design water level is an important problem of the design work in the no level station area.For the estuary effected by the flood and tide,this paper should consider the statistical analysis on the hydrology site,also need to think about the calculation of designed flood-tide water surface profile after flooding and tiding.Take the Jiaoyi Bay as an example,this paper selected the representative station,and used the statistical methods to analyze the measured water level in recent years in Shanbanzhou.The designed flood-tide water surface profile was calculated using two-dimensional hydrodynamic mathematical model of whole pearl river delta.Compared with two results,it was suggested that the statistical results in 1993 and 1983 were processed by the annual maxima method,which was the recommended design water levels.It reflected the current conditions of water level and change trend,which could provide a reference for the results revision of designed water level of tide level station in the pearl river delta.
出处 《人民珠江》 2018年第4期12-16,共5页 Pearl River
关键词 交椅湾 水文站 设计频率水位 设计洪潮水面线 Jiaoyi Bay hydrologic station design frequency water level designed flood-tide water surface profile
作者简介 侯堋,女,主要从事河口海岸方面工作。E-mail:houpen@126.com
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