๋ณธ ์ฐ๊ตฌ์์๋ ๋ค์ํ RC ์ฌ๋๋ธ์ ์ ์ด ๋ฐํ ์คํ์ ์ํํ์ฌ ๋ดํญ ์ฑ๋ฅ์ ํ๊ฐํ์๋ค. RC ์ฌ๋๋ธ์ ๋ดํญ ์ฑ๋ฅ ํฅ์์ ์ํด ์ฌ์ ๋ณด๊ฐ๊ณผ ์ธ๋ถ CFRP ์ํธ ๋ณด๊ฐ์ ๋์
ํ์๋ค. ํญ๋ฐํ์ค ์คํ์ <TEX>$2,000{\times}1,000{\times}100mm$</TEX> RC ์ฌ๋๋ธ๋ฅผ ์ ์ํ์๊ณ , ์ผ๋ฐ ์ฝํฌ๋ฆฌํธ์ ๊ฐ์ฌ์ ๋ณด๊ฐ ์ฝํฌ๋ฆฌํธ, ํ์ด๋ธ๋ฆฌ๋ PVA ์ฌ์ ๋ณด๊ฐ ์๋ฉํธ ๋ณตํฉ์ฒด, ์ด๊ณ ์ฑ๋ฅ ์ฝํฌ๋ฆฌํธ๋ฅผ ์ ์ฉํ์๋ค. ์ ์ด ๋ฐํ๋ก ์๊ธด RC ์ฌ๋๋ธ์ ์์ ์ ๋๋ฅผ ํฌ๋ ํ, ์คํด๊ณผ ๋ธ๋ฆฌ์น์ ์ง๊ฒฝ๊ณผ ๊น์ด๋ก ํ๊ฐํ์๋ค. ์คํ ๊ฒฐ๊ณผ๋ฅผ LS-DYNA ์ ํ์์ํด์ ํ๋ก๊ทธ๋จ๊ณผ Morishita ๋ฑ์ ์์ธก์์ผ๋ก ๊ฒ์ฆํ๊ณ ๋น๊ต๋ถ์ํ์๋ค. ๋ถ์ ๊ฒฐ๊ณผ, LS-DYNA ํ๋ก๊ทธ๋จ์ ์ด์ฉํ์ฌ ํฌ๋ ํ, ์คํด, ๋ธ๋ฆฌ์น์ ์ง๊ฒฝ ๋ฐ ๊น์ด์ ๋ํ ๊ฐ๋ต์ ์ธ ์์ธก์ด ๊ฐ๋ฅํ๋ฉฐ, ํญ๋ฐํ์ค ํ์์ ์์๋ถ์ ๊ฑฐ์์ ๊ฑฐ๋์ ๋ชจ์ฌํจ์ผ๋ก์จ ๋ถ์ฌ์ ํ๊ดด ์ด๋ ฅ์ ๋ํ๋ผ ์ ์์๋ค. ๊ตญ๋ถ ์์์ ๋ํ ์ธ๊ฐ์ง ์์ธก์์ด ์๊ฐ๋์ด ์์ผ๋ ๊ฒฝํ์์ผ๋ก์จ์ ํ๊ณ๊ฐ ์กด์ฌํ๋ฉฐ, ์ด์ ๋ํ ์ถ๊ฐ ์ฐ๊ตฌ๊ฐ ํ์ํ๋ค๊ณ ํ๋จ๋๋ค. In this study, the resistance of various reinforced concrete (RC) slabs subjected to contact detonation was assessed. In order to enhance the blast resistance, fibers and external FRP sheets were reinforced to RC slabs. In the experiment, the <TEX>$2,000{\times}1,000{\times}100mm$</TEX> sized RC slabs were fabricated using normal concrete (NC), steel fiber reinforced concrete (SFRC), polyvinyl alcohol fiber reinforced cementitious composite (PVA FRCC), and ultra-high performance cementitious composites (UHPCC). The damage levels of RC slabs subjected to contact detonation were evaluated by measuring the diameter and depth of crater, spall and breach. The experimental results were compared to the analyzed data using LS-DYNA program and three different prediction equations. The diameter and depth of crater, spall and breach were able to be predicted using LS-DYNA program approximately. The damage process of RC slabs under blast load was also well expressed. Three prediction equations suggested by other researchers had limitations to apply in terms of empirical approaches, therefore it needs further research to set more analytical considerations.