report(english version)参考地质资料(11)

report(english version)参考地质资料,x学习英文

的结果，可判定：本场地浅部地下水对砼无腐蚀性，对钢结构具中等腐蚀性。 No underground water pollution source was found in and nearby the Site. Judging from the water quality analysis on the 4 water samples taken from the site we can say that the shallow water is not to weak corrosivity to concrete, but it has medium to weak corrosivity to steel structure.

2.5、地震动峰值加速度(或地震基本烈度)、场地类别及液化判定Basic seismic intensity, seismic type of the Site, and liquefaction analysis

根据有关规范：本场地属Ⅳ类场地，地震动峰值加速度为0.05g(相当于地震基本烈度6度)。本场地地基土可不考虑砂土液化问题。

According to the relevant standards, the site is thought to be Type IV and the peak value of seismic acceleration is 0.05g (equal to 6 degree basic seismic intensity). The seismic liquefaction need not be taken into consideration for this site.

鉴于本工程的特殊性，业主要求部分主体项目场区按地震烈度7度进行地震液化评价。场地20m以浅分布有成层饱和的②3-1层砂质粉土，根据现场标准贯入试验成果，结合室内颗粒分析指标，按照规范综合判定：地基土在地震烈度7度条件下，不会发生砂土液化。(液化判定计算结果见表5)。

Taken the particularity of the project into consideration, the Client requires that the seismic liquefaction of the main project zones should be evaluated at 7 degree. Stratum ②3-1 on the site is saturated sandy silt within the depth of 20m. Based on the results of the SPT on site, the grain size analysis test in lab, and the relevant codes, it can be concluded that no sand liquefaction can happen on the Site when the seismic intensity is at 7 degree. (Please refer to Table 5 for the liquefaction result).

Table 5 标准贯入试验液化判别表 Liquefaction analysis based on SPT value

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