| 超声回弹综合法组合测强曲线 |
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| 引用本文： | 李云龙,张亦飞,罗海亮,程义旌,张海丰.超声回弹综合法组合测强曲线[J].建筑材料学报,2009,12(1). |
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| 作者姓名： | 李云龙 张亦飞 罗海亮 程义旌 张海丰 |
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| 作者单位： | 1. 浙江省交通工程建设集团有限公司,浙江,杭州,310006
2. 国家海洋局,第二海洋研究所,浙江,杭州,310012 |
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| 基金项目： | 浙江省交通厅科技计划 |
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| 摘 要： | 与单一预测方法相比,组合预测可以提高模型的拟合精度和预测能力.按照上述思路,将超声回弹综合法三参数幂函数测强曲线、五参数幂函数测强曲线及基于Shepard插值模型的测强曲线加权组合,按组合计算值与实测值的Theil不等系数极小化作为优化准则求得组合权重向量,构建了一类新的组合测强曲线.实例计算结果表明:组合测强曲线的各项拟合误差指标均优于单一测强曲线,这为改善超声回弹综合法检测精度提供了一种新的途径.
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| 关 键 词： | 超声回弹综合法 抗压强度 Shepard插值模型 遗传算法 |
Integrated Concrete Strength Curve for Ultrasonic-Rebound Combined Method Based on Correlativity |
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| LI Yun-long,ZHANG Yi-fei,LUO Hai-liang,CHENG Yi-jing,ZHANG Hai-feng.Integrated Concrete Strength Curve for Ultrasonic-Rebound Combined Method Based on Correlativity[J].Journal of Building Materials,2009,12(1). |
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| Authors: | LI Yun-long ZHANG Yi-fei LUO Hai-liang CHENG Yi-jing ZHANG Hai-feng |
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| Affiliation: | 1.Zhejiang Transportation Engineering Construction Group Corp.Ltd.;Hangzhou 310006;China;2.The Second Institute of Oceanography;State Oceanic Administration;Hangzhou 310012;China |
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| Abstract: | Integrated forecasting can provide higher accuracy than a single forecasting.Based on this,an integrated concrete strength curve was obtained for the ultrasonic-rebound combined method.This curve is the linear weighted aggregation of three curves provided by three models: three-parameter regression,five-parameter regression and Shepard interpolation model.The corresponding weight vector was obtained by the genetic algorithms(GA) to minimize the Theil coefficient.An example demonstrates that the fitting accu... |
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