Nowadays, advanced composite material are widely used in civil & architectural structures. Analysis of foam core sandwich bridges for simple supported made by advanced composite materials is presented in this paper. For the design of advanced composite materials bridge, foam core shape is economical and profitable. Navier’s solutions are compared in this paper to verify the authenticity of Finite Difference Method. Finite Difference Method is used for analysis of the pertinent problems. In this study, reduction rate of tensile strength for E-glass fibers due to increase in size, strength reduction ratios of according to mass, stress changes according to form core height and safety ratio due to increase form core height is presented. Tasi-Wu failure strength theory are used. Strength reduction is necessary for safe design of a structures.

1. 서 론
 2. 본 연구에 사용된 기본이론
  2.1 적층판의 강성
  2.2 적층판의 지배방정식
  2.3 적층판의 처짐
  2.4 적층판의 파괴강도
 3. 폼코어 샌드위치 교량의 인장강도감소율
  3.1 E-glass 섬유의 인장강도감소율
  3.2 에폭시 모재의 인장강도감소율
 4. 폼코어 샌드위치 교량의 수치해석
  4.1 폼코어 샌드위치 교량의 물성치와 형상
  4.2 폼코어 샌드위치 교량의 하중재하 형상
  4.3 폼코어 높이 증가에 따른 처짐 고찰
  4.4 폼코어 높이 증가에 따른 응력 고찰
  4.5 폼코어 높이 증가에 따른 안전율 고찰
 5. 결 론
 ACKNOWLEDGMENT
 REFERENCES

• 김윤영(동의대학교 기계공학과) | Kim, Yun Young
• 한봉구(서울과학기술대학교 건설시스템공학과) | Han, Bong Koo Corresponding author