2022 Fiscal Year Final Research Report
Study on the development of a concrete block fence that is structurally resilient and has a high degree of freedom in planning
Project/Area Number |
19K04712
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 23010:Building structures and materials-related
|
Research Institution | Kyushu University |
Principal Investigator |
|
Project Period (FY) |
2019-04-01 – 2023-03-31
|
Keywords | コンクリートブロック / ブロック塀 / 乾式工法 / プレストレス / 耐震設計 / つなぎ梁 / 振動台実験 / 固有周期 |
Outline of Final Research Achievements |
The purpose of this study is to develop a method to construct a concrete block fence with more free shape while ensuring seismic safety by dry masonry of concrete blocks using bolts and thin steel plates. As a result, it was confirmed that the dry construction method proposed in this study can construct concrete block fences of shapes that cannot be constructed by the conventional wet construction method using concrete blocks, reinforcing bars, and mortar, as well as shapes that can be constructed by the wet construction method. And it was also confirmed that the fence constructed by the dry construction method can secure the seismic performance equal to or higher than the fence constructed by the wet construction method. Especially when there is no orthogonal wall, the fence constructed by the dry construction method has a higher structural advantage than the fence constructed by the wet construction method due to less damage and higher resilience.
|
Free Research Field |
建築構造学
|
Academic Significance and Societal Importance of the Research Achievements |
コンクリートブロック塀は現行の規定を満足していないものが全国に多数存在することや、それらの耐震性は低く、そばを通る通行人は常に倒壊による危険にさらされていること、加えて、地震発生時にブロック塀が道路側に倒壊すると緊急車両などの通行が妨げられることなどが指摘されている。 本研究で提案した乾式工法で組積するブロック塀は、従来の湿式工法で組積したブロック塀と同等以上の耐震性能を確保できることや、湿式工法では構築不可能な形状のブロック塀を構築できることが本研究で確認されたことから、日本国内で多用されているブロック塀に構造安全性と計画の自由度が高い新たな選択肢をつくるための要件が2つ満たされたと言える。
|