The present invention relates to a steel composite girder and presents a technique about the ratio between a support and a general part and the concrete ratio in the support. In particular, a steel composite girder comprises: supports (10) which are seated on the upper portion of an abutment (51) or a pier (52), are formed on both sides of a girder, and are formed in box shapes; a general part (20) which is formed between the supports as a plurality of I-shaped structures; and connecting parts (30) which are formed in the general part (20) and each connect between two I-shaped structures, wherein one support comprises: an upper support plate (110) of a plate shape; a lower support plate (120) which forms a horizontal surface with respect to the upper support plate and is spaced therefrom; vertical support plates (130) which are two plate materials formed between the upper support plate and the lower support plate; and a barrier wall (140) having two plate materials formed in the cross-sectional direction and having a through-hole (141) formed therein. The I-shaped structure in the general part comprises: an upper span plate (220) which is formed in the horizontal direction and has a plate shape; a lower span plate (230) which forms a horizontal surface with respect to the upper span plate; and a vertical span plate (210) which is vertically formed between the upper span plate and the lower span plate, and the connecting part comprises: first connecting parts (410) which are located under two I-shaped structures in the cross-sectional direction and are located on both ends of the general part in the lengthwise direction; and a plurality of second connecting parts (420) which are located in the middle of the two I-shaped structures in the cross-sectional direction and are located between the first connecting parts (410), and a double-synthetic part (500), under which concrete is poured, is formed in a part of the box of the support.

La présente invention concerne une poutre composite en acier et présente une technique concernant le rapport entre un support et une partie générale et le rapport en béton dans le support. En particulier, une poutre composite en acier comprend : des supports (10) qui sont assis sur la partie supérieure d'une butée (51) ou d'un pilier (52), sont formés sur les deux côtés d'une poutre, et sont formés en forme de boîte ; une partie générale (20) qui est formée entre les supports sous la forme d'une pluralité de structures en forme de I ; et des parties de liaison (30) qui sont formées dans la partie générale (20) et dont chacune relie deux structures en forme de I. Un support comprend : une plaque de support supérieure (110) d'une forme de plaque ; une plaque de support inférieure (120) qui forme une surface horizontale par rapport à la plaque de support supérieure et est espacée de celle-ci ; des plaques de support verticales (130) qui sont deux matériaux de plaque formés entre la plaque de support supérieure et la plaque de support inférieure ; et une paroi de barrière (140) ayant deux matériaux de plaque formés dans la direction de section transversale et ayant un trou traversant (141) formé sur elle. La structure en I dans la partie générale comprend : une plaque de portée supérieure (220) qui est formée dans la direction horizontale et présente une forme de plaque ; une plaque de portée inférieure (230) qui forme une surface horizontale par rapport à la plaque de portée supérieure ; et une plaque de portée verticale (210) qui est formée verticalement entre la plaque de portée supérieure et la plaque de portée inférieure. La partie de liaison comprend : des premières parties de liaison (410) qui sont situées sous deux structures en forme de I dans la direction de la section transversale et sont situées sur les deux extrémités de la partie générale dans la direction longitudinale ; et une pluralité de secondes parties de liaison (420) qui sont situées au milieu des deux structures en forme de I dans la direction transversale et sont situées entre les premières parties de liaison (410), et une partie à double synthèse (500), sous laquelle du béton est versé, est formée dans une partie de la boîte du support.

본 발명은 강재 복합 거더에 대한 것으로서 지점부 및 일반부의 비율 및 지점부 내부의 콘크리트 비율에 대한 기술이다. 구체적으로 강재 복합 거더에 있어서, 교대(51) 또는 교각(52) 상부에 안착되며, 거더양측에 형성되며, 박스형태로 형성되는 지점부(10);, 상기 지점부 사이에 형성되며, 복수의 아이(I)형 구조체로 형성되는 일반부(20);, 상기 일반부에 형성되며, 2개의 아이(I)형 구조체 사이를 연결하는 연결부(30);로 구성되고, 하나의 상기 지점부는 판재형상의 상부지점판(110);, 상기 상부지점판과 수평면을 형성하며, 이격 형성된 하부지점판(120);, 상기 상부지점판 및 하부지점판 사이에 형성되며, 2개의 판재로 형성되는 수직지점판(130);, 2개의 판재가 단면방향으로 형성되며, 내부에는 관통홀(141)이 형성된 격벽(140); 을 포함하고, 상기 일반부의 아이(I)형 구조체는 수평방향으로 형성되며, 판재형상의 상부경간판(220);, 상기 상부경간판과 수평면을 형성하는 하부경간판(230);, 상기 상부경간판 및 하부경간판 사이에 수직으로 형성되는 수직경간판(210)을 포함하고, 상기 연결부는 2개의 아이(I)형 구조체 하부 단면방향에 위치하며, 일반부 길이방향 양단에 위치하는 제1연결부(410);, 2개의 아이(I)형 구조체 단면방향 중간부에 위치하며, 제1연결부 사이에 복수로 위치하는 제2연결부(420);를 포함하고, 상기 지점부 박스 내부 중 일부분에 형성되며, 하부에 콘크리트가 타설되는 이중합성부(500);를 포함한다.