Investigation of 3D deformation and failure mechanism of ground in excavation problems and development of efficient design systems

研究开挖问题中地面的 3D 变形和破坏机制并开发高效的设计系统

基本信息

批准号：
17360224
负责人：
NAKAI Teruo
金额：
$ 10.7万
依托单位：
Nagoya Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

To investigate the deformation mechanism and earth pressure of the ground in excavation problems such as tunneling and braced open excavation, 2D and 3D model test and the corresponding elastoplastic finite element analyses have been carried out. The effect of existing building loads with foundation is also investigated for both types of excavation problems. From the model tests and numerical analyses, the contents of the present research can be summarized as follows :(1) Finite element analyses using the constitutive model in which typical stress-strain behavior of soils are properly taken into consideration can predict well the deformation and failure of the ground qualitatively and qunatatively.(2) The present analysis can describe well the influences of construction sequence and existing building load on the deformation of ground.(3) By carrying out soil-water coupled analysis, it is revealed that the generation and dissipation of pore water pressure in the ground influence on the ground behavior very much.(4) Through the comparison between the present results and the result by ordinary methods, the problem and limitation of present design methods are discussed.

为了研究地面的变形机理和地面压力，例如隧道和开放开挖，2D和3D模型测试以及相应的弹性塑性有限元分析。还研究了两种类型的发掘问题的现有建筑物负载的影响。从模型测试和数值分析中，可以总结本研究的内容如下：（1）使用本构模型进行有限元分析，在该模型中，正确考虑土壤的典型应力应变行为可以很好地预测变形和正确的考虑。（2）目前的分析可以很好地描述构建顺序和现有建筑物负载对地面变形的影响。（3）通过进行土壤 - 水耦合分析，揭示了这一生成（4）通过比较当前的结果与普通方法的结果，讨论了当前设计方法的问题和局限性。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Influence of wall deflection process and wall deflection mode in retaining wall problems

挡土墙问题中墙体挠度过程和墙体挠度模式的影响

DOI：
发表时间：
2005
期刊：
Proc of 2nd China-Japan Geotechnical Symposium 1
影响因子：
0
作者：
J. Takemura;J. Izawa;R. Igarashi;M. Masuda;M. Okamura;田畑佑介他;E.S.Sung et al.;増田雅士・岡村未対;E.Sung 他;森藤・安原・岡村・河内;T.Nakai 他
通讯作者：
T.Nakai 他

Simulation of conventional and inverted braced excavation using subloading tij model

使用次加载 tij 模型模拟常规和倒支撑开挖