Evakuation Systems for life-Cycle Cost of Concrete Structures

混凝土结构生命周期成本的疏散系统

• 批准号: 10305035
• 负责人: OKAMURA Hajime
• 金额: $ 14.14万
• 依托单位: Kochi University of Technology (1999, 2001)The University of Tokyo (1998)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10305035/
• 关键词: life-span simulation; integration of structural; integrated system of thermo-hygryo physical analysis; safety of construction work; self-compactability; shrinkage; salt damage; retrofit and strengthening design; 耐久性; ライフサイクルコスト; 自己充填コンクリート; 配合設

A framework for total evaluation system for concrete material and concrete structures was established from the viewpoint of establishing life-cycle cost including the effect on the society by assembling analysis methods of concrete at fresh, early-age and hardened stages for material and structural performances. A framework for evaluation methods for safety of construction work and prediction for segregation by using mix-proportion and material characteristics at construction period were established. At early stage, simulation method for volume change caused by autogeneous and drying shrinkages was established applicable to variety of mix-proportioning, materials, curing, environment and age. At in-service stage, simulation methods for deterioration and lowering structural performance during some to tens of years was tried to be established by modelling salt movement, equilibrium and movement of ion, carbon-dioxide and oxygen in concrete, and collision of reinforcing bar, based on integrated system of thermo-hygro and physical analysis simulating development of concrete material structure at early stage. In addition, parallel computation system for three-dimensional FEM analysis method simulating development and deterioration process of concrete at early stage and for three-dimensional analysis system for concrete structure. A framework for method of retrofitting and strengthening design was also proposed form the viewpoint of performance-based design.

从建立包含社会影响的全寿命周期成本的观点出发，通过对混凝土新拌、早龄期和硬化阶段材料和结构性能的综合分析方法，建立了混凝土材料和混凝土结构综合评价体系框架。建立了施工期混凝土配合比和材料特性对施工安全性的评价方法和离析预测方法的框架。前期建立了适用于各种配合比、材料、养护、环境、龄期的自收缩和干燥收缩体积变化的模拟方法。在服役阶段，基于混凝土材料结构早期发展的热-湿-物理分析综合模拟系统，通过模拟混凝土中盐的运动、离子、二氧化碳和氧的平衡和运动以及钢筋的碰撞，尝试建立几年到几十年结构性能劣化和降低的模拟方法。此外，还开发了模拟混凝土早期发展和劣化过程的三维有限元分析方法并行计算系统和混凝土结构三维分析系统。从性能化设计的角度提出了加固设计方法的框架。

项目成果

菅俣 匠, 日比野 誠, 大内雅博, 岡村 甫: "ポリカルボン酸系高性能AE減水剤の粒子分散作用に関する一考察"コンクリート工学年次論文報告集. Vol.21 No.2. 91-96 (1999)

Takumi Sugamata、Makoto Hibino、Masahiro Ouchi、Hajime Okamura：“聚羧酸系高性能AE减水剂的颗粒分散效果研究”混凝土工程年报第21卷第2期（1999年） ）

石田哲也, 前川宏一: "An integrated computational system of mass/energy generation, transport and mechanics of materials and structures"Proceedings of EASEC-7. No.2. 1472-1477 (1999)

Tetsuya Ishida、Koichi Maekawa：“材料和结构的质量/能量生成、传输和力学的集成计算系统”，EASEC-7 论文集，第 2 期（1999 年）。

T.Shimomura, T.Ueda, H.Nakamura, Y Sato: "A proposal of design system for strengthening of existing concrete structures by performance-based design"Proceedings of the LABSE Colloquium on Concrete Model Code for Asia. 229-234 (1999)

T.Shimomura、T.Ueda、H.Nakamura、Y Sato：“通过基于性能的设计加强现有混凝土结构的设计系统提案”亚洲混凝土模型规范 LABSE 研讨会论文集。

T, Ishida. And K, Maekawa: "An integrated computational system of mass/energy generation, transport and mechanics of materials and structures"Journal of Materials, Concrete Structures and Pavements. No.627/V-44. 13-25 (1999)

T，石田。

岡村 甫, 石田 哲也: "A performance based design system and its benefit-Toward a design system in the coming century-"Proceedings of AIT 40th Anniversary Conference. Vol.6. II115-II128 (1999)

Hajime Okamura、Tetsuya Ishida：“基于性能的设计系统及其效益 - 迈向未来世纪的设计系统 -”AIT 40 周年纪念会议记录，第 6 卷（1999 年）。