Development of a self-regulation performance assessment system for RC structures by constructing a communication protocol connecting numerical analysis and element experiment

通过构建连接数值分析和单元实验的通信协议开发RC结构自调节性能评估系统

• 批准号: 14350231
• 负责人: INOUE Junya
• 金额: $ 9.15万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350231/
• 关键词: RC structures; numerical analysis; localized deformation; communication protocol; stochastic element free method; virtual material model; 材料の不確定性; エレメントフリー法; 地中構造物; 隅角部; 寸法効果; せん断破壊; 鉄筋配置; 応力伝達機構; 非線形解析; 局部破壊; 亀裂内浸透流; 確率モデル; 破壊計測

In general, we still have a difficulty in numerically reproducing a response of the structure in which a localized deformation, such as a buckling of reinforcement steel. Hence, the final goal of the present research was to develop the analysis method which is composed of a standard element with conventional constitutive law and a specially developed element in which responses are obtained through an element experiment separately conducted, and to suggest a new analytical method and new design method which become indispensable when building the above-mentioned system. The research result enumerated below :(1)Development of prototype to the communication protocol used between analysis and experiment systemsThe development of the communication protocol was carried out using so-called Document system in consideration of large-scale sizing, distribution / parallel environment and extendibility of the data. The adopted communication protocol was tested within small-scale LAN, and is found t … More o work for the system in which the level of nonlinearity is moderate.(2)Development of Stochastic Element Free MethodFor the purpose of making it possible to model easily not only the indefinite nature of the material but complicated RC structures, an stochastic element fee method is developed. The method is developed by extending the element free galerkin method by either perturbative expansion method or Polynominal Chaos. By comparison with the result of the Monte Carlo simulation in various boundary conditions, the validity and effectiveness of the technique are demonstrated.(3)Development of self mass adjustment virtual material modelTo the junction part and edge part of subterranean ferro-concrete structure, a self mass adjustment type virtual material model, in which reinforcing bar arrangement can be automatically generated, is adopted. From the result, it can be obtained, a design pattern which can be actually applied and which can sustain bending and shear force, with suitable degree. It is notable to say that the present approach becomes more effective when the large-sized component, in which the size effect of shear failure becomes dominant, is considered. Less

一般来说，我们仍然很难在数值上重现局部变形（例如钢筋屈曲）的结构响应。因此，本研究的最终目标是开发一种由具有常规本构律的标准单元和通过分别进行单元实验获得响应的专门开发的单元组成的分析方法，并提出在构建上述系统时必不可少的新分析方法和新设计方法。研究成果如下：(1)分析系统和实验系统之间使用的通信协议原型开发考虑到数据的大规模规模、分布式/并行环境和可扩展性，使用所谓的文档系统进行通信协议的开发。所采用的通信协议在小型局域网内进行了测试，结果发现它适用于非线性程度适中的系统。(2)随机元自由方法的开发为了使不仅可以轻松地模拟材料的不确定性质，而且可以轻松地模拟复杂的RC结构，开发了随机元自由方法。该方法是通过微扰展开法或多项式混沌扩展无元素伽辽金法而开发的。通过与各种边界条件下蒙特卡洛模拟结果的比较，验证了该技术的有效性和有效性。(3)自质量调整虚拟材料模型的开发针对地下钢筋混凝土结构的交接部位和边缘部位，采用了可自动生成钢筋排布的自质量调整型虚拟材料模型。从结果中，可以获得可以实际应用的、能够承受适当程度的弯曲和剪切力的设计图案。值得注意的是，当考虑到剪切破坏的尺寸效应占主导地位的大尺寸部件时，本方法变得更加有效。较少的

项目成果

Masoud SOLTANI, Xuehui AN, Koichi MAEKAWA: "Cracking Response and Local Stress Characteristics of RC Membrane Elements Reinforced with Welded Wire Mesh"Cement and Concrete Composite journal. (in press). (2003)

Masoud SOLTANI、Xuehui AN、Koichi MAEKAWA：“焊接钢丝网增强 RC 膜元件的开裂响应和局部应力特征”《水泥与混凝土复合材料》杂志。

Junya INOUE, Hiroaki SUGITA: "Fourth order approximation of fluid flow through rough-walled rock fracture"Water Resources Research. Vol.38, No.8. 10.1029/2002WR001411 (2003)

Junya INOUE、Hiroaki SUGITA：“通过粗壁岩石裂缝的流体流动的四阶近似”水资源研究。

Hitoshi TAJIMA, Masahiko KISHIDA, Koichi MAEKAWA, Satoru OHNO: "Exoerimental study on seismic performance of sidewalls Connected at knee joints of cut and cover tunnels"Journal of Structural Engineering. Vol.50A. 959-968 (2004)

Hitoshi TAJIMA、Masahiko KISHIDA、Koichi Maekawa、Satoru OHNO：“明挖回填隧道膝关节连接侧壁抗震性能的实验研究”结构工程学报。

J.Inoue, H.M.Kim: "変形に伴う単一亀裂の透水特性の変化に対する統計的手法の適用"土木学会論文集. No.743/III-64. 189-197 (2003)

J.Inoue、H.M.Kim：“应用统计方法解决因变形导致的单裂缝渗透性变化”，日本土木工程师协会会刊第 743/III-64 号（2003 年）。

Soltani M., An X., Maekawa K: "Computational Model for Post Cracking Analysis of RC Membrane Elements Based on Local Stress-Strain Characteristics"Engineering Structures journal, Elsevier Science. (in press). (2003)

Soltani M.、An X.、Maekawa K：“基于局部应力应变特性的 RC 膜元件后裂纹分析的计算模型”工程结构杂志，爱思唯尔科学。