A research of failure mechanism of tropical expansion soil in Africa and its countermeasure of symbiosis with nature
非洲热带膨胀土破坏机理及其与自然共生的对策研究
基本信息
- 批准号:15404013
- 负责人:
- 金额:$ 8.19万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A kind of tropical expansion soil : Marl that widely spread in equatorial area of Africa has a feature of volumetric change in geotechnical field. The volume of Marl increase due to high moisture in rainy season, on the other hand the volume is reduced in dry season. As the weights of lower building do not have bearing resistance against swelling pressure, the deformation caused by shrinkage and expansion invoke differential settling and swelling. From the field investigations around Dakar, factors are investigated based on the type of building, type of damage for building and geological condition. In addition, samples are collected from the major-damaged area in Dakar. In order to understand the physical and mechanical properties and microstructure of Marl, the samples were shipped to Japan and laboratory tests were carried out in Japan. From the results of those tests, the main features of Marl is investigated in detail. As the mechanical feature of Marl changed with water content, l … More aboratory tests were conducted under various water contents. The reduction of strength and the swelling character in high water content condition andtherecovery of strength and swelling character under drainage condition are studied in the research.The practical goal of this research is to establish the construction method to improve the ground stiffness using soil bag in Dakar area. In order to confirm the effectiveness of soil bag as the ground improving method (Solpack-method), various tests using soil bag were conducted. Based on the experimental results, the applicability of Solpack-method is investigated and numerical simulations are carried out in addition. From a series of research, a standard and a manual for design of Solpack-method is proposed and established.In order to apply the Solpack-method in Dakar area, technical meetings are held in Dakar city with engineers of administration, builders, researchers in Dakar area and Professor Fall of Dakar University. Solpack-method, which is established to apply for various local regions in detail, is proposed for researchers and engineers in Dakar area. It is expected to develop the detail manual of design for local area by the researchers in those areas for the future. Less
一种热带膨胀的土壤:在非洲相等地区,巨大的传播具有岩土工具的体积变化的特征。另一方面,由于雨季的水分高,MAL的体积增加,在干旱季节减少了体积。由于下部建筑物的重量没有抵抗肿胀压力的阻力,因此收缩和膨胀引起的变形引起了差分沉降和肿胀。根据达卡尔(Dakar)周围的现场调查,根据建筑物的类型,建筑物的损害类型和地质状况进行了研究。此外,从达卡(Dakar)的重大损害区域收集样品。为了了解MAL的物理和机械性能和微观结构,将样品运送到日本,并在日本进行了实验室测试。根据这些测试的结果,详细研究了MARL的主要特征。随着水含量的机械特征随着水含量的变化而变化,在各种水含量下进行了更多的土著测试。在研究中,研究了在高水含量条件下的强度和肿胀特征,在排水条件下的强度和肿胀特征的发现。这项研究的实际目标是建立施工方法,使用达卡地区的土壤袋改善地面刚度。为了确认土壤袋的有效性作为地面改进方法(Solpack-hethod),使用了使用土壤袋进行各种测试。根据实验结果,研究了Solpack方法的可施加性,并进行了数值模拟。根据一系列的研究,提议并建立了用于Solpack方法设计的标准和手册。为了在达喀尔地区应用Solpack-Method,在达喀尔市举行了技术会议,与达卡地区的工程师,建筑商,研究人员和达喀尔大学的堕落者一起举行了技术会议。 Solpack-Method旨在详细申请各个地方地区,并建议为达喀尔地区的研究人员和工程师。预计将来,研究人员将为未来的研究人员开发当地设计的细节手册。较少的
项目成果
期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Sarr, A.M.: "Stress-dilatancy relation for highly structured soils"Proc.Of International Workshop on Prediction and Simulation Methods in Geomechanics. 61-64 (2003)
Sarr, A.M.:“高度结构化土壤的应力-剪胀关系”地质力学预测和模拟方法国际研讨会论文集。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
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YASHIMA Atsushi其他文献
ESTIMATION OF GROUND ANCHOR RESIDUAL TENSION BY VIBRATION METHOD
振动法估算地锚残余张力
- DOI:10.2208/jscejge.77.3_21310.2208/jscejge.77.3_213
- 发表时间:20212021
- 期刊:
- 影响因子:0
- 作者:SAITO Hideki;YAMAZAKI Mitsuru;YASHIMA Atsushi;NAWA Kazuki;AOIKE Kunio;SONE YoshinoriSAITO Hideki;YAMAZAKI Mitsuru;YASHIMA Atsushi;NAWA Kazuki;AOIKE Kunio;SONE Yoshinori
- 通讯作者:SONE YoshinoriSONE Yoshinori
共 1 条
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YASHIMA Atsushi的其他基金
Enhancement of long-term stability evaluation technique for anchor-reinforced large-scale landslide slope in Three Gorges reservoir area
三峡库区锚固式大型滑坡长期稳定性评价技术增强
- 批准号:20KK009120KK0091
- 财政年份:2020
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
Application of numerical method based on fluid dynamics to solve extremely large deformation and associated failure of geomaterials.
应用基于流体动力学的数值方法解决岩土材料的极大变形及相关破坏。
- 批准号:1736022317360223
- 财政年份:2005
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (B)Grant-in-Aid for Scientific Research (B)
Designing and construction methods of reinforced river dike in a natural environmentally friendly way
自然环保加筋河堤设计与施工方法
- 批准号:1355513713555137
- 财政年份:2001
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (B)Grant-in-Aid for Scientific Research (B)
Applicable one-dimensional frozen method for obtaining undisturbed natural sand material containing fine particles
适用于获得含细颗粒原状天然砂料的一维冷冻方法
- 批准号:1155512711555127
- 财政年份:1999
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (B).Grant-in-Aid for Scientific Research (B).
Fluid Dynamics Based Numerical Analysis on Failure and Large Deformation of Soft Foundation
基于流体动力学的软基破坏及大变形数值分析
- 批准号:1165050311650503
- 财政年份:1999
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (C)Grant-in-Aid for Scientific Research (C)
Temperature dependent viscous behavior on natural clay and the extension of a elasto-thermo-viscoplastic constitutive model
天然粘土的温度依赖性粘性行为以及弹热粘塑性本构模型的扩展
- 批准号:0965054609650546
- 财政年份:1997
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (C)Grant-in-Aid for Scientific Research (C)
SELECTION OF COUNTERMEASURE AGAINST LIQUEFACTION OF SANDY GROUND ON WHICH PRE-EXISTING STRUCTURE EXISTS
既有建筑物砂地液化对策的选择
- 批准号:0755563807555638
- 财政年份:1995
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (B)Grant-in-Aid for Scientific Research (B)
DEFORMATION ANALYSIS OF GEOSTRUCTURES BY AN OBJECTIVE ALE-METHOD WITHADAPTIVE REMESHING TECHNIQUE
基于自适应网格重整技术的客观 ALE 方法对地质结构的变形分析
- 批准号:0765056707650567
- 财政年份:1995
- 资助金额:$ 8.19万$ 8.19万
- 项目类别:Grant-in-Aid for Scientific Research (C)Grant-in-Aid for Scientific Research (C)