Blast Resistance of Double-Layered Reinforced Concrete Slabs Composed of Precast Thin Plates
スポンサーリンク
概要
- 論文の詳細を見る
When designing blast-resistant reinforced concrete (RC) structures, reducing spall damage due to reflected tensile stress waves is a major problem. Furthermore, for rapid construction of the blast-resistant structures against sudden terrorist bomb attacks, it is necessary to build it with precast concrete walls and reduce the weight of the precast elements by reducing their size for ease of transportation and construction.In this study, to propose an idea for rapid construction and better blast resistance of blast-resistant RC structures, double-layered RC slabs composed of precast thin plates, 50 mm thick, were fabricated and utilized for contact detonation tests. The tests were conducted under a condition that the amount of explosives and the dimensions of specimen were constant respectively, and two types of concrete, normal concrete and polyethylene fiber reinforced concrete (PEFRC), were employed as the slab materials. Our results showed that creating an air cavity between the two layers of PEFRC slab was effective in reducing spall damage, while the air space had no advantage in normal RC, under a condition that the thickness of the air space was fixed at 15 mm. Furthermore, the above difference between PEFRC and normal RC slabs was discussed, based on the numerical result on the fracture process of the air-sandwiched normal RC slab.
論文 | ランダム
- 農業環境政策の形成と展開に関する研究(2) 事例分析:埼玉県所沢市・三富新田(都市郊外)農業の多面的機能
- 表明選好法による農業・農村の持つ多面的機能の経済評価
- ブックガイド 祖田修・佐藤晃一・太田猛彦・谷口旭編 『農林水産業の多面的機能』
- ノルウェー 将来危機に備える食料輸入国の食料安全保障政策 (フードセキュリティ--世界の食料安全保障政策はいま) -- (主要国の食料安全保障政策)
- 水産業の多面的機能に関する評価と支援策(27)離島漁業再生へ、さまざまな取り組み--05年度開始の交付金制度--06年度は64%増の77市町村が活用