The present invention provides a suspension bridge and a construction method thereof. The suspension bridge comprises: pluralities of first and second support wires (21, 22) of which respective end portions are fixed and coupled to upper end portions of sides and the other sides of first and second fixing structures (13, 18), and the respective other end portions extending are fixed and coupled to upper end portions of the other sides and sides of the second and first fixing structures (18, 13), and third and fourth support wires (23, 24) of which the respective end portions are fixed and coupled to respective front surface portions of sides and the other sides of upper portions of first and second abutments (11, 16), and the respective other end portions extending are fixed and coupled to respective front surface portions of the other sides and sides of upper portions of second and first abutments (16, 11); a wind cable (50) of which a central portion has an upwardly convex arc shape and is positioned to traverse a lower side of a central portion of a deck (42), and of which an end portion is coupled to a central portion of an upper surface of a first auxiliary abutment (14) and the other end portion is coupled to a central portion of an upper surface of a second auxiliary abutment (19); a plurality of first connection wires (54) which are distanced from each other by a distance, and of which respective end portions are fixed and coupled to respective lower surface portions of sides of first horizontal movable structures (31), and the respective other side portions are fixed and coupled to the wind cable (50) by extending while forming a predetermined angle inwardly; and second connection wires (55) which are respectively positioned while facing the first connection wires (54), and of which respective end portions are fixed and coupled to lower surface portions of the other sides of the first horizontal movable structures (31), and the respective other side portions are fixed and coupled to the wind cable (50) together with the first connection wires (54) by extending while forming a predetermined angle inwards.

본 발명은, 각각의 일단부위는 제1, 2고정구조물(13, 18) 각 일측 및 타측 상단부위에 고정결합되고 연장되는 각각의 타단부위는 제2, 1고정구조물(18, 13) 각 타측 및 일측 상단부위에 고정결합되는 복수 개의 제1, 2지지와이어(21, 22), 각각의 일단부위는 제1, 2교대(11, 16) 각 상부 일측 및 타측의 전면부위에 고정결합되고 연장되는 각각의 타단부위는 제2, 1교대(16, 11) 각 상부 타측 및 일측의 전면부위에 고정결합되는 복수 개의 제3, 4지지와이어(23, 24); 중앙부위가 상방으로 볼록하게 아치를 이루며 데크(42)의 중앙부위 하측을 가로지르며 위치하고 그 일단부위는 제1보조교대(14)의 상면 중앙부위에 결합되고 그 타단부위는 제2보조교대(19)의 상면 중앙부위에 결합되는 윈드케이블(50), 상호 간에 일정거리 떨어져 위치하는 복수 개로 이루어지며 각각의 일단부위는 각 제1수평가동구조물(31)의 일측 하면부위에 고정결합되고 각각의 타측부위는 내측으로 일정 각도를 이루며 연장되어 윈드케이블(50)에 고정결합되는 제1연결와이어(54), 각 제1연결와이어(54)와 대향하여 위치하며 각각의 일단부위는 각 제1수평가동구조물(31)의 타측 하면부위에 고정결합되고 각각의 타측부위는 내측으로 일정 각도를 이루며 연장되어 제1연결와이어(54)와 함께 윈드케이블(50)에 고정결합되는 제2연결와이어(55);를 포함하는 출렁다리 및 그 시공방법을 제공한다.