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Study on estimation of Long-term settlement of a Piled building at reclaimed land in Osaka

大阪填海地桩基建筑长期沉降估算研究

基本信息

批准号：
02650412
负责人：
TOMIYAMA Akihiro
金额：
$ 1.28万
依托单位：
Kanazawa Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02650412/
关键词：
Long-term settlement of Pile-tip Instantaneous elastic settlement Instantaneous plastic settlement Visco elastic settlement Visco plastic settlement Locomotion of particles Clash of particles Model test 模型実験

项目摘要

The author observed long-term settlement of a piled building at reclaimed land in Osaka. As the results, the author found that the pile-tip had been Penetrating into its bearing layer. And the author analized this phenomena by visco-elasto plastic model. In this study the author intended to clear the physical meaning of the constants of visco-elasto plastic model.Model tests were carried out by using the model sand and gravel ground. Model ground were constructed by piling up many chalks. As the results of these model tests, the author found that instantaneous elastic settlement caused by elastic deformation and displacement of sand particles, instantaneous plastic settlement caused by displacement of sand particles, visco elastic settlement caused by visco elastic deformation of sand particles and visco plastic settlement caused by clash and displacement of sand particles.Another Purpose of this study was estimating the long-term settlement of pile by using the data of standard penetration test. But it was not able to carry out. So its estimation was carried out by using the data of cone penetration test.

笔者对大坂填海造地的一座桩基建筑物进行了长期沉降观测。结果表明，桩端已进入桩端承载层。并采用粘弹塑性模型对这一现象进行了分析。为了明确粘弹塑性模型常数的物理意义，采用模型砂砾石地基进行了模型试验。模型地面是用许多粉笔堆起来的。模型试验结果表明，砂土颗粒的弹性变形和位移引起的瞬时弹性沉降，砂土颗粒的位移引起的瞬时塑性沉降，本文的另一个目的是估算砂土的长期沉降，利用标准贯入试验数据计算桩的沉降。但它无法执行。因此，利用静力触探试验数据进行了估算。