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Development of Naturalistic River Improvement with Using High Performance Durable Concrete

高性能耐久性混凝土自然河流治理的发展

基本信息

批准号：
07555434
负责人：
SAEKI Noboru
金额：
$ 1.6万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555434/
关键词：
Naturalistic space Waterfront space Ecological space River Revetment Porous concrete Point fix 近自然工法 Point Fix工法帯工透水性コンクリート凍上アルカリ再生骨材 point Fix工法自然環境再生コンクリート

项目摘要

Prevention of river disaster, such as flood protection and improvement of hydraulic effectiveness were the major interest in last decades. It was only recently that the necessity of the naturalistic river improvement is pointed out in Japan. The main object of this research is to develop a new method of the naturalistic river improvement with using high performance durable concrete.Fix point method, a new type of river improvement construction method, was proposed using a high performance porous concrete block at the critical zigzag angle of river course. The high performance porous concrete, good for ecological circumstances, was developed by the durable concrete with gap-graded mixture.In-situ exposure test for the new type of revetments and field tests were conducted at the same time to investigate the behavior of sediment transportation and the sedimental property as well as hydraulic stability in the case of flood disaster. The effects of the high performance porous concrete on natural environment are simultaneously confirmed the safety against the alkali-dissolution, ecological and biological alterations. The tests results of aforementioned application experiments indicate the effectiveness to the naturalistic river improvement using high performance porous concrete.

预防河流灾害，例如防洪和提高水力有效性是过去几十年的主要关注点。日本直到最近才指出自然主义河流改善的必要性。本研究的主要目的是开发一种使用高性能耐用混凝土自然河道整治的新方法。在河道临界锯齿角处采用高性能多孔混凝土砌块，提出了一种新型河道整治施工方法——定点法。以间隙级配混合料的耐用混凝土为基础，研制出有利于生态环境的高性能多孔混凝土。对新型护岸进行了原位曝露试验和现场试验，研究洪涝灾害下泥沙输送行为、沉积特性和水力稳定性。高性能多孔混凝土对自然环境的影响同时也证实了其对碱溶、生态和生物改变的安全性。上述应用试验的结果表明了高性能多孔混凝土对自然河流治理的有效性。