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Creation of New Architectural Spaces Utilizing 200N/mm^2 Ultra-High-Strength Fiber-Reinforced Concrete

利用200N/mm^2超高强度纤维混凝土创造新的建筑空间

基本信息

批准号：
16360278
负责人：
SUGANO Shunsuke
金额：
$ 7.04万
依托单位：
Hiroshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

The purpose of this study is to develop a new building structure which combines the 200MPa class ultra-high-strength fiber-reinforced concrete (UFC) with reinforced concrete so that new architectural spaces which meet the needs of higher building, longer column span and smaller member section may be created. In order to put the UFC to practical use for earthquake resistant building structures, a series of seismic loading test of members and partial frames (interior beam-column joints) in a UFC building were conducted in Hiroshima University in 2004 through 2006.Results of the test of UFC columns and interior beam-column joints using UFC for both beams and columns were summarized as follows. 1) Stable seismic behavior of columns could be obtained even under very high axial compression when they were confined with high-or ultra-high-strength lateral reinforcement. 2) Steel fibers significantly contributed to enhance the shear strength of beam-column joints.Test results of interior beam-c … More olumn joints which consisted of precast 200MPa-UFC shell columns and 60MPa concrete beams were summarized as follows. 1) Bond splitting failure did not occur in the beam-column joints in which such a failure was predicted based on the existing design equations. 2) The shear strength of the joints was significantly higher than those calculated by the existing design equations. 3) The shear strength of the joints could be well evaluated when the contribution of steel fibers in UFC to the shear strength are taken into account.The flexural test of beams to investigate the tensile strength of UFC and associated discussions indicated the followings. 1) The flexural strength of a UFC column or a UFC shell column can be well evaluated when the tensile strength of UFC are taken into consideration. 2) The shear strength of a UFC or a UFC shell column can be well evaluated when the contribution of tensile strength of UFC is adequately taken into consideration.Thus it was clarified that the flexural strength and the shear strength of members and frames could be well evaluated when the contribution of steel fibers in UFC were adequately taken into account. This was a great advance of UFC for practical use. Less

本研究的目的是开发一种将200MPa级超高强度纤维增强混凝土（UFC）与钢筋混凝土相结合的新型建筑结构，从而创造出满足更高建筑、更大柱跨和更小构件截面需求的新建筑空间。为了使UFC在抗震建筑结构中得到实际应用，2004年至2006年在广岛大学对UFC建筑的构件和部分框架（内部梁柱节点）进行了一系列地震荷载试验。UFC柱和梁柱内部梁柱节点的试验结果总结如下：1)柱在高强度或超高强度侧配筋约束下，即使在很高的轴压下也能获得稳定的抗震性能。2)钢纤维对提高梁柱节点抗剪强度有显著贡献。由预制的200MPa-UFC壳柱和60MPa混凝土梁组成的内梁-c…More柱节点试验结果总结如下：1)根据现有设计方程预测的梁柱节点的键裂破坏未发生。2)节点抗剪强度显著高于现有设计方程计算值。3)考虑UFC中钢纤维对节点抗剪强度的贡献，可以较好地评价节点的抗剪强度。研究UFC抗拉强度的梁的弯曲试验和相关讨论表明如下。1)当考虑到UFC的抗拉强度时，可以很好地评价UFC柱或UFC壳柱的抗折强度。2)充分考虑UFC抗拉强度的贡献，可以较好地评价UFC或UFC壳柱的抗剪强度。因此，充分考虑钢纤维在UFC中的贡献，可以很好地评价构件和框架的抗弯强度和抗剪强度。这是UFC在实际应用中的一大进步。少