2012年10月上 施工技术 第41卷第374期 CONSTRUCTION TECHNOLOGY 53 一种借助振动台测定土体剪切波速 的新装置及试验验证 黄占芳，余巍，朱白涛，白晓红 (太原理工大学建筑与土木工程学院，山西太原030024) [摘要]为了研究桩基加固前后地基土剪切波速的变化及大小，借助于振动台、压力传感器、动态采集系统等设备 发明了一套在室内测定土体剪切波速的新装置.该装置只有振动方向的剪切波，不存在其他形式波的扰，具有 操作方便、简捷，计算直接、简单的优点，可以有效地减小试验所带来的误差.利用该装置分别对天然地基土和9 桩加固地基土的剪切波速进行了试验测试，计算结果和相关文献得到的结果相近，进一步验证了该装置测试土体 剪切波速的可行性.桩基加固后地基土的剪切波速相比天然地基有所提高，土的抗液化强度增强. [关键词]地基；土体剪切波速；振动台；桩；试验；抗液化强度 [中图分类号]TU411 [文献标识码]A [文章编号]1002-8498(2012)19-0053-03 A New Device to Measure the Shear Wave Velocity of Soil Samples with Vibration Table and Its Experimental Verification Huang Zhanfang Yu Wei Zhu Baitao Bai Xiaohong College of Architecture and Civil Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China) Abstract:In order to study the change of shear wave velocities of the foundation before and after pile strengthening a new device was developed to measure shear wave velocity of soil in laboratory with the help of vibration table pressure sensor and dynamic collect system.The device generates only shear wave ing from the vibration direction and avoids interruptions by other waves.It has a lot of advantages such as easy operation and simple calculation etc.which can effectively reduce the experiment error. The shear wave velocities of a natural foundation and a foundation with 9 pile reinforcement were tested using the device and the calculation results were pared with relevant literature.The calculation results are close to the results obtained in this experim...
一种借助振动台测定土体剪切波速的新装置及试验验证.pdf
