剪切波速推测的工程应用
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摘要
剪切波速是场地地震反应分析中的一个重要计算参数。针对工程中剪切波速测试不能达到技术要求的情况,本文简要分析了剪切波速测试不能达到要求的原因,并介绍了剪切波速推测作为弥补手段,使剪切波速达到技术要求。通过工程实例介绍了两种推测剪切波速的办法,一种是利用指数形式的经验公式推测剪切波速,主要是介绍了通过微调公式中的部分参数,使得推测结果更结合实际,另一种是利用多项式形式拟合来推测剪切波速,主要是通过观察其分布规律,来确定其拟合函数的形式。
Shear wave is an important calculating parameter in site seismic response analysis.Sometimes,shear wave testing could not arrive at technical requirement,whose reasons are analyzed in this paper.As a remedy method,shear wave inferring is introduced in order to make the shear wave arrive at technical requirement.In the paper,two methods of inferring shear wave are introduced by some engineering applying,one is using exponential formed experience formula method to infer shear wave,mainly introducing how to infer shear wave more accurately using experience formula by little adjusting some parameters in the formula,the other one is using polynomial fitting method to infer shear wave,mainly introducing how to ascertain the function form by observing the distribution law of shear wave.
Shear wave is an important calculating parameter in site seismic response analysis.Sometimes,shear wave testing could not arrive at technical requirement,whose reasons are analyzed in this paper.As a remedy method,shear wave inferring is introduced in order to make the shear wave arrive at technical requirement.In the paper,two methods of inferring shear wave are introduced by some engineering applying,one is using exponential formed experience formula method to infer shear wave,mainly introducing how to infer shear wave more accurately using experience formula by little adjusting some parameters in the formula,the other one is using polynomial fitting method to infer shear wave,mainly introducing how to ascertain the function form by observing the distribution law of shear wave.
引文
[1]汪闻韶.土工地震减灾工程中的一个重要参量—剪切波速[J].水利学报,1994(3):80–84,89
[2]胡聿贤,地震安全性评价技术教程[M].北京,地震出版社,2003:358–363
[3]廖振鹏,李小军.地表土层地震反应的等效线性化解法[C]//地震小区划(理论与实践).北京:地震出版社,1989:141–153
[4]刘曾武.弹性波速度现场测试的方法和技术[C]//地震小区划(理论与实践).北京:地震出版社,1989:122–133
[5]薄景山.场地分类和设计反应谱调整方法研究[R].哈尔滨:中国地震局工程力学研究所,1998
[6]GB50191-93,构筑物抗震设计规范[S][7]刘德东,刘红帅.济南黄河河底隧道工程场地地震安全性评价报告[R].哈尔滨:中国地震局工程力学研究所,2007
[8]刘德东,刘红帅.山东省滨州套儿河大桥工程场地地震安全性评价报告[R].哈尔滨:中国地震局工程力学研究所,2007
[2]胡聿贤,地震安全性评价技术教程[M].北京,地震出版社,2003:358–363
[3]廖振鹏,李小军.地表土层地震反应的等效线性化解法[C]//地震小区划(理论与实践).北京:地震出版社,1989:141–153
[4]刘曾武.弹性波速度现场测试的方法和技术[C]//地震小区划(理论与实践).北京:地震出版社,1989:122–133
[5]薄景山.场地分类和设计反应谱调整方法研究[R].哈尔滨:中国地震局工程力学研究所,1998
[6]GB50191-93,构筑物抗震设计规范[S][7]刘德东,刘红帅.济南黄河河底隧道工程场地地震安全性评价报告[R].哈尔滨:中国地震局工程力学研究所,2007
[8]刘德东,刘红帅.山东省滨州套儿河大桥工程场地地震安全性评价报告[R].哈尔滨:中国地震局工程力学研究所,2007
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