华南地震

随着弯曲元和 SCPTU试验方法的发展,剪切波速需要做总结研究的紧迫性进一步凸显｡针对剪切波速问题,通过分析国内外专家学者对剪切波速的计算方法与测试方法的相关研究成果,系统凝练了抗震场地评测､公式计算分析､波形分析方法及细颗粒微观影响机制与弯曲元和 SCPTU试验计算剪切波速的核心学术问题,初步揭示了弯曲元和 SCPTU测试技术多参数､多影响因素联合分析中迫切需要解决的技术难题,并呼吁弯曲元和 SCPTU测试技术分析剪切波速的规范方法,为剪切波速的分析应用提供参考和借鉴意义｡

With the development of bending element and SCPTU test method,it is urgent to summarize the research on shear wave velocity. Aiming at the problem of shear wave velocity,by analyzing the relevant researchresults of domestic and foreign experts and scholars on the calculation methods and test methods of shear wavevelocity,the author systematically summarizes the core academic issues,which includes seismic site evaluation,formula calculation and analysis,waveform analysis method,micro influence mechanism of fine particles andcalculation of shear wave velocity by bending element and SCPTU test. The urgent technical problems to be solvedin the joint analysis of multi parameter and multi influence factors of bending element and SCPTU testing technology are preliminarily revealed. It also calls for the codes for shear wave velocity analysis by bending elementand SCPTU test,which can provide reference for the analysis and application of shear wave velocity.

引言
1 方法与影响因素
2 测试方法
3 总结与讨论

图1 在恒定孔隙率下剪切模量与配位数的关系 [27]<br/>Fig.1 Relationship between shear modulus and coordinationnumber at constant void ratio[27]

图1 在恒定孔隙率下剪切模量与配位数的关系 [27]
Fig.1 Relationship between shear modulus and coordinationnumber at constant void ratio[27]

图2 在恒定孔隙率下颗粒接触的示意图:(a)纯砂;(b)砂中含少量细颗粒;(c)砂中含大量细颗粒 [27]<br/>Fig.2 Schematic diagram of particle contactsat constant void ratio[27]

图2 在恒定孔隙率下颗粒接触的示意图:(a)纯砂;(b)砂中含少量细颗粒;(c)砂中含大量细颗粒 [27]
Fig.2 Schematic diagram of particle contactsat constant void ratio[27]

图3 剪切波速与状态参数关系曲线 [28]<br/>Fig.3 Relationship curve between shear wave velocityand state parameter[28]

图3 剪切波速与状态参数关系曲线 [28]
Fig.3 Relationship curve between shear wave velocityand state parameter[28]

图4 弯曲元测试系统工作原理<br/>Fig.4 Working principle of bending element testing system

图4 弯曲元测试系统工作原理
Fig.4 Working principle of bending element testing system

图5 不同细颗粒含量下的剪切波信号<br/>Fig.5 Shear wave signal under different fine particle content

图5 不同细颗粒含量下的剪切波信号
Fig.5 Shear wave signal under different fine particle content

图6 SCPTU测试示意图<br/>Fig.6 Schematic diagram of SCPTU test

图6 SCPTU测试示意图
Fig.6 Schematic diagram of SCPTU test

图7 多功能数字式车载 SCPTU系统照片<br/>Fig.7 Photos of multi-function digital on-board SCPTU system

图7 多功能数字式车载 SCPTU系统照片
Fig.7 Photos of multi-function digital on-board SCPTU system

图8 基于剪切波速评估岩土参数的流程图<br/>Fig.8 Flow chart of geotechnical parameters evaluation based onshear wave velocity

图8 基于剪切波速评估岩土参数的流程图
Fig.8 Flow chart of geotechnical parameters evaluation based onshear wave velocity

图9 剪切波速相对误差的累积分布曲线<br/>Fig.9 Cumulative distribution curve of relative errorof shear wave velocity

图9 剪切波速相对误差的累积分布曲线
Fig.9 Cumulative distribution curve of relative errorof shear wave velocity

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备注

引言

1 方法与影响因素

2 测试方法

3 总结与讨论

期刊信息