Limit States of Civil Engineering Structures under Combined Loads

土木工程结构在联合荷载作用下的极限状态

• 批准号: 62420039
• 负责人: YAMADA Yoshikazu
• 金额: $ 9.54万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62420039/
• 关键词: Limit States; Combined Loads; Ultimate Strength; Stress-Strain Relation; Hybrid Experiments; Structural Control; Earthquake Design; Offshore Structures; オンラインハイブリッド実験; 鋼構造物; 座屈; 地震応答; 使用性限界; 終局限界; 疲労限界; 2軸曲げ; 載荷実験; 鉄筋コンクリート; 破壊規範

Due to recent advances in structural design and construction technology, numerous new-type and large-size engineering structures such as cable-stayed or suspension bridges, high-rise buildings, industrial and offshore structures, and so on have been designed and constructed in seismically active regions. In design of these structures, it is critically important to examine the combined load-effects to structures and the combined stress-effects to structural members. It is also important to find the ultimate limit states of structures and members under these loads and stresses.Firstly in this study, stress-strain based concept is developed for inelastic earthquake response analysis of reinforced concrete frame structures taking into account dynamic variation of axial forces. The stress-strain relation of concrete and steel used in this study are examined and approved in this experimental studies using the newly developed substructure-based hybrid loading systems. The proposed methods are … More applied for inelastic earthquake response evaluation of a tower PC cable stayed bridge. Inelastic behaviors of thin wall steel box columns and bean-column joints under repetive bending are also investigated from the experiments.Secondly, earthquake energy concepts are introduced to new earthquake resistant design of civil engineering structures, and applied to the base-isolated and dynamically damped structures. The earthquake energy parioning in these structures is found to give significant information for their reliability assessment. Fundamental studies on phase-delayed active control of structures with feed forward and feed back controls are also conducted. Thirdly, random response and reliability analysis of offshore structure subjected to wave and earthquake motions is carried out using frequency domain analysis. Fourthly, reliability of earthquake damaged structures and their repair methods are investigated through analytical and experimental method. Details of this study are found in the research reports. Less

近年来，由于结构设计和施工技术的进步，在地震活跃地区设计和建造了许多新型、大型工程结构，如斜拉桥、悬索桥、高层建筑、工业和海上结构等。在这些结构的设计中，检查结构的组合荷载效应和结构构件的组合应力效应至关重要。找出结构和构件在这些载荷和应力下的极限状态也很重要。首先，在本研究中，考虑到轴力的动态变化，开发了基于应力应变的概念，用于钢筋混凝土框架结构的非弹性地震响应分析。本实验研究中使用新开发的基于子结构的混合加载系统对本研究中使用的混凝土和钢材的应力-应变关系进行了检查和批准。所提出的方法适用于塔式 PC 斜拉桥的非弹性地震响应评估。还通过实验研究了薄壁钢箱柱和梁柱节点在重复弯曲下的非弹性行为。 其次，将地震能量概念引入土木工程结构的新型抗震设计中，并将其应用于基础隔震和动态阻尼结构。人们发现这些结构中的地震能量分配为其可靠性评估提供了重要信息。还对具有前馈和反馈控制的结构的相位延迟主动控制进行了基础研究。第三，利用频域分析对海上结构在波浪和地震作用下的随机响应和可靠性进行分析。第四，通过分析和实验方法研究地震受损结构的可靠性及其修复方法。这项研究的详细信息可以在研究报告中找到。较少的

项目成果

YAMADA, Yoshikazu: Journal of Natural Disaster Science. 9-2. 97-114 (1988)

山田义一：自然灾害科学杂志。

IEMURA, Hirokazu: Proc. of the International Conference on Cable-Stayed Bridge, Bankok, Thailand. 1. 1006-1022 (1987)

IEMURA，Hirokazu：Proc。

山田善一: "Stress-Strain Based Modelling of Inelastic Earthquake Response of RC Frame Structures with Varying Axial Forces" Proceedings of 9th World Conference on Earthquake Engineering. 5. 411-416 (1988)

Yoshiichi Yamada：“基于应力应变的不同轴向力的 RC 框架结构的非弹性地震响应建模”第九届世界地震工程会议论文集 5. 411-416 (1988)。

古田均: "ファジィ確率に基づく損傷を受けた不静定構造物の信頼性解析" 材料. 37. 989-995 (1988)

Hitoshi Furuta：“基于模糊概率的受损不确定结构的可靠性分析”材料 37. 989-995 (1988)。

山田善一: "Sesimic Response of Offshore Structures in Random Seas" Earthquake Engineering and Struictural Dynamice. 18. 965-981 (1989)

Zenichi Yamada：“随机海洋中海上结构的地震响应”地震工程和结构动力 18. 965-981 (1989)。