Vertical earthquake motions can occur along with horizontal earthquakes, so that Structure should be designed to resist Seismic loads in all directions. Especially, due to the dynamic characteristics such as the vibration mode, when the vertical seismic load, the dynamic response of the Spatial structure is large. In this study, the seismic response of the lattice dome to horizontal and vertical seismic loads is analyzed, and a reasonable seismic load combination is analyzed by combining horizontal and vertical seismic response results. In the combination of the horizontal seismic load, the largest result is obtained when the direction of the main axis of the structure coincides with the direction of seismic load. In addition, the combination of vertical seismic load and horizontal seismic load was the largest compared with the combination of horizontal seismic load. Therefore, it is considered that the most reasonable and stable design will be achieved if the seismic load in vertical direction is considered.

Abstract
 1. 서론
 2. 지진 하중의 직교성
 3. 예제 구조물 선정
  3.1 예제 구조물
  3.2 예제 구조물 동적 특성
 4. 수평 및 연직 방향 지진 하중 적용시지진 응답
  4.1 수평 방향 지진 하중 적용시 지진 응답
  4.2 연직 방향 지진 하중 적용시 지진 응답
 5. 결론
 감사의 글
 References

• 김유성(영남대학교 일반대학원 건축학과, 석사과정, epartment of Architecture, Yeungnam University) | Kim, Yu-Seong
• 강주원(영남대학교 건축학부 교수, 공학박사, School of Architecture, Yeungnam University) | Kang, Joo-Won
• 김기철(서일대학교 건축과 교수, School of Architecture, Seoil University) | Kim, Gee-Cheol 교신저자