Seismic deformation analysis of Tuttle Creek Dam
Seismic deformation analysis of Tuttle Creek Dam
复制标题
塔特尔溪大坝地震变形分析
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
David L. Mathews
中科院分区：
文献类型：
--
作者：
T. Stark;M. Beaty;P. Byrne;G. Castro;F. C. Walberg;V. Perlea;P. Axtell;J. Dillon;William B. Empson;David L. Mathews
为了便于设计堪萨斯州中东部的Tuttle Creek大坝的地震修复，使用FLAC软件和UBCSAND和UBCTOT土本构模型对大坝进行了地震有限差分分析。FLAC软件有一个关键的优势，因为它可以使用校准的特定地点的本构模型。早期对地基细粒材料采用双曲本构模型进行变形分析，不能很好地表示模量和强度折减，并预测了极大的永久变形。采用高质量试样的室内循环三轴试验和原位叶片剪切试验对FLAC本构模型进行了标定。对未修复大坝的FLAC分析结果预测，利用设计的地面运动，上游坡脚变形约0.6 m，波峰沉降约0.6 m，下游坡脚变形约1.5 m。根据估计的永久变形和其他因素，决定…
To facilitate the design of seismic remediation for Tuttle Creek Dam in east central Kansas, a seismic finite difference analysis of the dam was performed using the software FLAC and the UBCSAND and UBCTOT soil constitutive models. The FLAC software has a key advantage because it can use calibrated site-specific constitutive models. Earlier deformation analyses using a hyperbolic constitutive model for the foundation fine-grained materials did not properly represent the modulus and strength reduction and predicted extremely large permanent deformations. Cyclic triaxial laboratory tests using high-quality samples and in situ vane shear tests were used to calibrate the FLAC constitutive model herein. The resulting FLAC analysis of the unremediated dam predicted an upstream slope toe deformation of about 0.6 m, a crest settlement of about 0.6 m, and a downstream slope toe deformation of about 1.5 m using the design ground motion. Based on the estimated permanent deformations and other factors, it was decided...