• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>World conference on earthquake engineering;WCEE >SEISMIC RESPONSE OF SOFT-FIRST-STORY BUILDINGSSUPPORTED BY YIELDING FOUNDATIONS
【24h】

SEISMIC RESPONSE OF SOFT-FIRST-STORY BUILDINGSSUPPORTED BY YIELDING FOUNDATIONS

机译：屈服基础对软第一层建筑物的地震响应

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In 1995 Hyougoken Nanbu Earthquake, the soft-first-story buildings suffered significant damage becausethe buildings had to consume most of energy by the soft-first-story columns. For the preventative measureof this type of failure, it is well-known that making the soft first story stronger (i.e., increasing the columnsize) is efficient. But, in this case, the strength of super structure becomes large and the inertial force fromthe superstructure significantly influences the design of the foundations, especially in soft soil sites. In thetraditional design, it is thought that the foundation should be stronger than the superstructure, i.e., thefoundation should not suffer damages during great earthquakes. In this research, an alternative is proposedthat reduces the reinforcement of foundation members and forces yielding in the foundation. To considerthe effect of the yielding foundation on the seismic response of the superstructure, soft-first-storybuildings supported by pile foundations were analyzed. The yielding of grade beam and the yielding ofpile were defined as the yielding of foundation, and the strengths of grade beam and pile were changed asthe parameters. For the model of the analysis, a 2-D frame structure model was connected with a freeground column by nonlinear soil (p-y) springs. The results from the dynamic analyses showed that theyielding of grade beam and the yielding of pile can reduce the seismic response of the soft first storyduring the great earthquake. And also it was indicated that the energy consumption of the soil in thevicinity of pile decreases the total energy consumption of the structure, and the yielding of foundationderive not just the energy consumption of the foundation members but also the extra energy consumptionof the soil in the vicinity of the pile.
机译：在1995年的兵库县南部南部地震中，软第一层建筑物遭受了严重破坏，因为建筑物必须消耗软第一层柱的大部分能量。对于这种类型的故障的预防措施，众所周知，使软的第一层更坚固（即，增加列的大小）是有效的。但是，在这种情况下，上部结构的强度会变大，并且上部结构的惯性力会显着影响地基的设计，尤其是在软土地基中。在传统设计中，人们认为基础应比上层建筑坚固，即在大地震中基础不应受到破坏。在这项研究中，提出了一种替代方案，该方案可减少基础构件的加固和基础中的屈服力。为了考虑屈服基础对上部结构地震响应的影响，分析了桩基础支撑的软第一层建筑物。将等级梁的屈服和桩的屈服定义为基础的屈服，将等级梁和桩的强度更改为参数。对于分析模型，通过非线性土壤（p-y）弹簧将二维框架结构模型与自由柱连接。动力分析结果表明，在大地震中，缓坡梁的加固和桩的屈服可以减小软第一层的地震响应。并且还表明，桩附近土壤的能耗降低了结构的总能耗，不仅基础构件的能耗降低了基础产量，而且附近土壤的额外能耗也降低了一堆

著录项

  • 来源
  • 会议地点 Vancouver(CA);Vancouver(CA)
  • 作者

    Takuya NAGAE; Shizuo HAYASHI;

  • 作者单位

    Tokyo Institute of Technology Yokohama Japan. Email: nagae@serc.titech.ac.jp;

    Tokyo Institute of Technology Yokohama Japan. Email: hayashi@serc.titech.ac.jp;

  • 会议组织
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号