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[试验检测师] 公路评分题 [复制链接]

泰来
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  • 技术员
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  • 2012-06-04
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发表于 2012-06-04 13:33 |显示全部
★工程质量等级评定例题®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
1、某土方路基质量评定，经对压实度、弯沉、平整度等8项指标检测，各指标合格率如表所示，其中压实度代表值大于压实度标准值，弯沉代表值满足要求。外观缺陷和资料不全扣分分别为8分和6分。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

检查项目®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

压实度®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

弯沉®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

纵断高程®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

中线偏位®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

宽度®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

平整度®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

横坡®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

边坡®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

合格率（%）®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

90®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

100®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

75®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

90®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

85®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

75®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

90®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

80®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

权 值®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

3®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

3®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

（1）请评定该路段土方路基质量等级。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（2）如评定结果不合格，那么如何改进该土方路基的质量？如评定结果合格，为了进一步提高该土方路基的质量，则应采取什么措施。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
解：（1）检测项目得分分别为：91、100、75、90、85、75、90、80®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
土方路基分项工程得分：（90×3＋100×3＋75×2＋90×2+85×2+75×2+90×1+80×1）/（3+3+2+2+2+2+1+1）=86.9分®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
土方路基分项工程评分值＝86.9-8-6=72.9(分)，小于75分®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
小于75分，故质量等级评定为不合格。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（2）改进措施：提高检查项目的合格率，纵观检测项目的合格率和规定分，首先应提高压实质量，进行补充压实，使压实度合格率提高。其次提高平整度合格率；补充质量保证资料，减少扣分；整修外观缺陷，减少扣分。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
★路基、路面压实度评定例题®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
2．某二级公路路基压实质量检验，经检测各点（共12个测点）的干密度分别为1.72、1.69、1.71、1.76、1.78、1.76、1.68、1.75、1.74、1.73、1.73、1.70(g/cm3)，最大干密度为1.82g/cm3，试按95%的保证率评定该路段的压实质量是否满足要求（压实度标准为93%）。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

附  表®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

保证率®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

保证率系数Za®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

n=10®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

n=11®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

n=12®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

99%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.892®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.833®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.785®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2.327®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

95%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.580®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.546®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.518®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1.645®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

90%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.437®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.414®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.393®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1.282®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

97.72%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.814®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.761®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.718®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2.00®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

93.32%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.537®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.506®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.481®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1.50®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

解：（1）计算各测点的压实度Ki（%）分别为：94.5、92.9、94.0、96.7、97.8、96.7、92.3、96.2、95.6、95.1、 95.1、93.4®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（2）计算平均值 和标准偏差S ®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
=95.0%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
S=1.68%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（3）计算代表值，当95%保证率n=12时，查表得： ®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
K= - ·S=95.0-0.518×1.68=94.1%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（4）评定K0=93%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
因K>K0®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
且Ki min=92.3%>88%（极值标准）所以该评定路段的压实质量满足要求。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
★路面结构层厚度评定例题®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
3．某高速公路二灰稳定砂砾基层设计厚度为18cm，代表值允许偏差为-8mm，极值允许偏差为-15mm。评定路段厚度检测结果（12个测点）分别为17.5、17.7、18.2、18.6、18.1、18.8、、17.6、17.8、19.1、19.3、17.4、17.9cm，试按保证率99%评定该路段的厚度是否合格？并计算合格率®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
附  表®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

保证率®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

保证率系数Za®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

n=10®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

n=11®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

n=12®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

99%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.892®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.833®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.785®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2.327®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

95%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.580®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.546®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.518®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1.645®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

90%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.437®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.414®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.393®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1.282®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

97.72%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.814®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.761®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.718®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

2.00®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

93.32%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.537®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.506®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

0.481®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

1.50®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚

®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
解：（1）厚度平均值®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
=（17.5+17.7+18.2+18.6+18.1+18.8+17.6+17.8+19.1+19.3+17.4+17.9）/12=18.17cm®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（2）标准偏差S=0.64cm，查表得： =0.785®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（3）厚度代表值 = ®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（4）该路段厚度代表值符合要求。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（5）由于各检测值Xi>18-0.8=17.2cm故合格率为100%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
★路基、柔性基层、沥青路面弯沉值评定例题®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
4、某检测组对某一已完工的路基进行弯沉测试，共测得２７个弯沉值，其数据如下：60、52、104、110、90、156、224、70、140、130、70、 100、210、104、170、80、86、74、54、60、104、70、218、100、110、50、40 (0.01mm)，请计算该路段的弯沉代表值。（采用２S法，取Za=2.0）。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
解：（1）将上述27个数据计算得： =105（0.01mm），S=51.6(0.01mm)，CV=49.1%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
采用2S法，将超出 ±2S范围的作为特异值，即凡大于 + 2S=208的观测值舍弃，有三个：224，210，218。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（2）重新计算其余24个观测值得： =91，S=34，CV=37.4%®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
采用2S法，将超出 ±2S范围的作为特异值即凡大于 + 2S=129的观测值舍弃，又有三个：170，156，140。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（3）重新计算其余21个观测值得： =82(0.01mm)，S=24.5(0.01mm)，CV=29.9%，无特异值。‘’ ®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
（4）计算弯沉代表值: Lr+2S=82+2×24.5=122(0.01mm)。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
★水泥混凝土抗压强度评定例题®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
5、某桥基础所需混凝强度等级为C20，施工过程中制取的3组混凝土立方体试件28天抗压强度如下表所示，试评定该混凝土强度等级是否合格。®ŠÛ÷’ýÿP%bbs.3c3t.com5¼Æ¾€Íðu ‚
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