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Research on Rational Design of Prestressed Concrete Structures

预应力混凝土结构合理设计研究

基本信息

批准号：
17360210
负责人：
NIWA Junichiro
金额：
$ 10.24万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360210/
关键词：
prestressed concrete beam shear failure external cable method truss analogy shear capacity shear reinforcement nonlinear analysis prestressed concrete segment

项目摘要

The purpose of this research is to evaluate the shear resisting mechanism of prestressed concrete (PC) structural members based on the mechanical consideration and to provide the adequate safety against the shear failure of PC structural members. To achieve this purpose, experimental and numerical investigations have been done during 2005 and 2006. Obtained results are as follows :In 2005, experiments and numerical analyses were carried out to evaluate the shear resisting mechanism of PC members. Various experimental data were collected throughout the world. These data were used to evaluate the accuracy and validity of the simplified truss model. Parametric numerical analyses were also performed to formulate the simplified truss model for PC structural members with shear reinforcement. Finally, the simplified truss model to explain the shear resisting mechanism of PC members has been proposed.In 2006, the experiments of externally prestressed concrete beams and also segmental PC beams with external cables were performed. These experiments have been done to examine the accuracy and validity of the simplified truss model. From the experimental and numerical examinations, it has been confirmed that the simplified truss model can be adopted to evaluate the shear resisting mechanism and also to predict the shear resisting capacity of PC members.The obtained results of this research have been published in various journals, such as JSCE Journal of Material, Concrete Structures and Pavements, and the Proceeding of Japan Concrete Institutes, etc.

本研究的目的是从力学的角度评价预应力混凝土构件的抗剪机理，为预应力混凝土构件的抗剪破坏提供足够的安全性。为了达到这一目的，在2005至2006年间进行了实验和数值研究。主要研究成果如下：2005年，对预应力混凝土构件的抗剪性能进行了试验研究和数值分析。在世界各地收集了各种实验数据。这些数据被用来评估简化桁架模型的准确性和有效性。并进行了参数数值分析，建立了PC剪力配筋构件的简化桁架模型。2006年，进行了体外预应力混凝土梁和节段式体外拉索预应力混凝土梁的试验研究。为了检验简化桁架模型的准确性和有效性，进行了这些实验。通过试验和数值试验，证实简化桁架模型可以用来评估PC构件的抗剪机理，也可以用来预测PC构件的抗剪能力。这项研究的成果已发表在JSCE《材料、混凝土结构与路面》杂志和《日本混凝土学会会刊》等多个期刊上。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

3次元格子モデルによる鉄筋コンクリート高架橋全体系の地震時挙動の予測

使用 3D 晶格模型预测整个钢筋混凝土高架桥系统的地震行为

DOI：
发表时间：
2006
期刊：
コンクリート工学年次論文集 28・2
影响因子：
0
作者：
三木朋広;二羽淳一郎
通讯作者：
二羽淳一郎

Mechanical Properties of Composite PC Girders Using Prestressed UFC Truss

采用预应力 UFC 桁架的组合 PC 梁的力学性能

DOI：
发表时间：
2006
期刊：
Materials, Experimentation, Maintenance and Rehabilitation, Proc. of EASEC-10
影响因子：
0
作者：
Murata;H.;Niwa;J.;Tanaka;Y.;Katagiri,M.
通讯作者：
Katagiri,M.

Influence of Prestress on the Inclination of Diagonal Crack of Externally PC Beams

预应力对体外PC梁斜裂缝倾角的影响