如题：某高速公路水泥稳定碎石基层，已知设计抗压强度Rd=3.1MPa,现测得某段的无侧限抗压强度数值如下，对该段强度结果进行评定并计算其得分值。（规定分为20分，保证率为95%，Za=1.645）3.85'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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4.01'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.53'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.96'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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4.00'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.73'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.86'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.97'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.93'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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4.05'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.52'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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3.83'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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第一种解答：'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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R=3.85'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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Cv=0.046'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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Rd/(1-ZaCv)=3.1/(1-1.645*0.046)=3.35'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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R>Rd/(1-ZaCv)'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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合格，得满分20分。'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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我看了也有资料上这样解答： '¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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答案：'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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（1）计算平均值'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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，标准偏差S、变异系数Cv：R=3.85'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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Cv=0.046 S=0.178'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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（2）计算代表值：'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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保证率为95%的保证率系数Za=1.645'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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∴代表值=3.85-0.178*1.645=3.56'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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（3）评定：'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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∵3.56＞3.2'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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∴该段的无侧限抗压强度合格'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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（4）计算得分值：'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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得分值=20分（规定的满分）'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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个人认为第二种解答求出的是该组数据的代表值，不适用于路段的强度评定，不知大家有何不同见解，欢迎讨论！'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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'¤A¤Ë?^e:bbs.3c3t.com¿7Ö×
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