Boundary friction mechanism of reinforced soil and reasonable design method of reinforced cut slope

加筋土边界摩擦机理及加筋路堑边坡合理设计方法

• 批准号: 05650465
• 负责人: MATSUI Tamotsu
• 金额: $ 1.41万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650465/
• 关键词: reinforced soil; reinforced slope; grid reinforcement; initial bend; pullout resistance; slope stability analysis; bearing capacity mechanism; design method; ハイブリッド斜面安定解析法; 境界摩擦; 拘束ダイレイタンシー; 地山補強; 合理的設計法

To investigate both mechanisms of bearing and boundary friction between steel-grid reinforcement and ground, the authours proposed a reasonable design method of reinforced slope, being based on experimental results and numerical simulations. The main conclusions are summerized as follows :1. The pullout tests of steel-grid reinforcement were carried out to investigate the bearing mechanism of gridreinforced wall, and the forces acting on longitudinal and transverse steel bars were evaluated. It was found that axial force of longitudinal bars significantly changed at location of transverse bars, and also that the diameters and surface conditions of longitudinal and transverse steel bars affected bearing and boundary friction mechanism.2.The pullout tests of steel-grid reinforcement with initial bend were carried out to investigate the effect of initial bend induced by overburden pressure or rolling compaction. It was found that the about 5 cm initial bend made 10% increase of the pullout resistance comparing with that of steel-grid reinforcement without initial bend.3.The authors applied hybrid slope stability analysis for a real cut slope, and examined the applicability of this design method. The authors also proposed a reasonable design method of real cut slope reinforced by rootpiles as a example.

为了研究钢网格增强和地面之间的轴承和边界摩擦的机制，Authours提出了一种合理的增强斜率设计方法，是基于实验结果和数值模拟的。主要结论是夏季，如下：1。进行了钢电网加固的拔出测试，以调查玻璃纤维壁的轴承机理，并评估了作用在纵向和横向钢筋上的力。发现纵向杆的轴向力在横杆的位置显着变化，并且还表明，纵向和横向钢棒的直径和表面条件影响了轴承和边界摩擦机制。2。钢芯片加固的拉螺栓测试随初始弯曲的拔出，以研究过度弯曲压力或滚动压力的初始弯曲的效果。发现大约5厘米的初始弯曲与没有初始弯曲的钢电网加固相比，拔出电阻增加了10％。3。作者对真正的切割坡度应用了混合斜率稳定性分析，并检查了这种设计方法的适用性。作者还提出了一种合理的设计方法，用于由rootpiles加强的真实切割坡度。

项目成果

T.Matsui,K.C.San&D.Leshchinsky: "Geosynthetic reinforced slopes:limit equilibrium and finite element analysises" Soils and Foundations. Vol.34 No.2. 79-85 (1994)

松井T.San K.C.

T.Matsui&K.C.San: "Failure test walls predicition by teh generalized plasticity theory(in Press)" Soils and Foundations. Vol.35. (1995)

松井先生

T.Matsui, Y.Nabeshima, U.N.Amin & T.Matsuda: "Pullout tests of grid reinforcement which has initial bend (in Press)" Proc.of annual conference of J.S.C.E.in Kansai Chapter. (1995)

T.Matsui、Y.Nabeshima、U.N.Amin

松井保・鍋島康之・Amin・松田拓: "初期たわみをもつグリッド補強材の引抜き試験(発表予定)" 平成7年度土木学会関西支部年次学術講演会講演概要集. (1995)

Tamotsu Matsui、Yasuyuki Nabeshima、Amin 和 Taku Matsuda：“具有初始挠度的网格加固材料的拉出试验（待提交）”日本土木工程师学会关西分会 1995 年学术会议摘要（。 1995)

T.Matsui,K.C.San and D.Leshchinsky: "Geosynthetic reinforced slopes:limit equilibrium and finite element analysises" Soils and Foundations. Vol.34 No.2. 79-85 (1994)

T.Matsui、K.C.San 和 D.Leshchinsky：“土工合成材料加固斜坡：极限平衡和有限元分析”土壤和地基。