山东东营城区剪切波速回归分析及应用
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摘要
剪切波速是当前工程场地地震安全性评价和地震小区划工作中必备的参数之一,是土层地震反应分析中一个重要参数。然而受到实际情况的制约,测试不能达到工作要求的深度或是测试结果未满足要求,这时必须对剪切波速进行估计。该文通过对东营城区46个钻孔土体剪切波速测试结果的统计回归分析,提出了线性函数、幂函数相结合的土体剪切波速推算公式。考虑土体类型对土剪切波速与土层深度关系的影响,获得考虑不同土体类型的剪切波速推测公式。最后,以某职工住宅楼工程为例,通过4个钻孔剪切波速测试结果与本报告所提出的剪切波速推算方法进行对比验证,证明该方法的有效性。
The shear wave velocity is one of the essential parameters of seismic safety evaluation and seismic micro zoning in current engineering site,and it is the key parameter in soil seismic response analysis.Sometimes, the shear wave velocity test could not arrive at technical requirement due to the actual condition restriction, so it is necessary to develop the parameter inferring method.In the paper,the data of soils shear wave velocity at 46 typical boreholes in Dongying city area are selected for statistic regressive analysis.Based on the data,the inferring formulas of shear wave velocity with linear function and power function are put forward.Considering shear wave velocity and soil depth influenced by soil classification,the new inferring formulas are obtained. At last,the inferring formulas of the shear wave velocity are applied at 4 boreholes in one residential building.It shows that the calculation results conform well to those of site test,and the inferring method is effective.
The shear wave velocity is one of the essential parameters of seismic safety evaluation and seismic micro zoning in current engineering site,and it is the key parameter in soil seismic response analysis.Sometimes, the shear wave velocity test could not arrive at technical requirement due to the actual condition restriction, so it is necessary to develop the parameter inferring method.In the paper,the data of soils shear wave velocity at 46 typical boreholes in Dongying city area are selected for statistic regressive analysis.Based on the data,the inferring formulas of shear wave velocity with linear function and power function are put forward.Considering shear wave velocity and soil depth influenced by soil classification,the new inferring formulas are obtained. At last,the inferring formulas of the shear wave velocity are applied at 4 boreholes in one residential building.It shows that the calculation results conform well to those of site test,and the inferring method is effective.
引文
1齐文浩,刘德东,等.剪切波速推测的工程应用.防灾科技学院学报,2007,9(4):17-20
2胡聿贤.地震安全性评价技术教程.北京,地震出版社, 2003.358-363
3兰景岩,薄景山,吕悦军.剪切波速对设计反应谱的影响研究.震灾防御技术,2007,1(2):19-24
4陈国兴,徐建龙,袁灿勤.南京城区岩土体剪切波速与土层深度的关系.南京建筑工程学院学报,1998,(2):33-37
5潘国营,许昭平,越元松.焦作市岩土剪切波速和场地卓越周期研究.焦作工学院学报(自然科学版),2000,19(1): 1-4
2胡聿贤.地震安全性评价技术教程.北京,地震出版社, 2003.358-363
3兰景岩,薄景山,吕悦军.剪切波速对设计反应谱的影响研究.震灾防御技术,2007,1(2):19-24
4陈国兴,徐建龙,袁灿勤.南京城区岩土体剪切波速与土层深度的关系.南京建筑工程学院学报,1998,(2):33-37
5潘国营,许昭平,越元松.焦作市岩土剪切波速和场地卓越周期研究.焦作工学院学报(自然科学版),2000,19(1): 1-4
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