东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (12): 1766-1769.DOI: -

• 论著 • 上一篇    下一篇

大型贮灰坝动力反应及液化分析

李明;梁力;赵军;王常剑;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-12-15 发布日期:2013-06-24
  • 通讯作者: Li, M.
  • 作者简介:-
  • 基金资助:
    辽宁省科技计划项目(2004308002)

Dynamic response and liquefaction potential of large-size ash stacked dam

Li, Ming (1); Liang, Li (1); Zhao, Jun (1); Wang, Chang-Jian (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-12-15 Published:2013-06-24
  • Contact: Li, M.
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

711

摘要： 通过对某石化企业热电厂贮灰场粉煤灰的静力和动力三轴试验,分析了粉煤灰固结排水条件和固结不排水条件下的应力-应变关系、动模量与动应变关系和液化应力比与破坏振动次数关系.同时应用有限元软件ANSYS对加高后的贮灰坝进行了静力分析,以及在Park Field波作用下尾矿坝的动力反应,并采用应力对比分析方法对该贮灰场进行了液化分析,说明相对密度对液化区面积有很大影响,相对密度越小,液化区越大.因此控制粉煤灰的相对密度对贮灰坝的液化稳定是非常必要的.

关键词: 贮灰坝, 动力反应, 液化, ANSYS

Abstract: Discusses the relationships between stress and strain, dynamic modulus and dynamic strain and the degree ratio of liquefaction to stress and number of cycles of destructive vibration in view of the fly ash consolidation with liquid drained (CD) and undrained (CU) to which the triaxial tests of fly ash samples taken from a stack yard of a petrochemical plant were done statically and dynamically. The finite element software ANSYS was applied to the static analysis of the heightened ash stacked dam and the dynamic response of a tailing dam under the action of Park Field seismic wave. A liquefaction analysis was made to the ash stack yard by way of shear stress correlation. The results showed that the relative density of fly ash (Dr) affects greatly the area of liquefaction region, i.e. the smaller the Dr the bigger the area. A conclusion is drawn that the control of Dr is indispensable to the liquefaction stability of ash stacked dam.

中图分类号: