Truss stiffening fixed end beam bridge: Fid-Bau Portal

Truss stiffening fixed end beam bridge

JIANG FUHAI / DONG BING / QI ZEYUAN / BANG GUN / ZHANG CHENNAN / YUAN SHENGFENG / CHEN BIN / LIN WEIJIN

The invention relates to a truss stiffening fixed end beam bridge which comprises a main beam (130), a simply-supported end bridge abutment (110), a fixed end bridge abutment (120) and a truss structure. One end of the main beam (130) is a simply supported end bridge abutment (110), and the other end of the main beam (130) is a consolidated end bridge abutment (120); the truss structure comprises a truss upper chord member (140), a truss steel rib column (150) and a truss web member (160); the truss upper chord member (140) is arranged above the girder consolidation end bridge abutment (120); a plurality of truss steel reinforced columns (150) are arranged between the truss upper chord member (140) and the main beam (130) at intervals, and a truss web member (160) is obliquely arranged between any two truss steel reinforced columns (150). The truss is arranged on the bridge floor of the consolidation end, part of internal force of the main beam is borne, the rigidity of the consolidation end of the main beam is improved, the stress performance of the consolidation end of the main beam is improved, the beam height of the main beam below the bridge floor is effectively reduced, the design size and scale of the consolidation end are reduced, and the construction cost is saved.

本发明涉及一种桁架加劲固端梁桥，包括主梁(130)、简支端桥台(110)、固结端桥台(120)以及桁架结构；所述主梁(130)的一端为简支端桥台(110)，另一端为固结端桥台(120)；所述桁架结构包括桁架上弦杆(140)、桁架钢骨柱(150)以及桁架腹杆(160)；所述桁架上弦杆(140)设置于主梁固结端桥台(120)上方；所述桁架上弦杆(140)与主梁(130)之间间隔设有多个桁架钢骨柱(150)，任意两个桁架钢骨柱(150)之间均倾斜设置有桁架腹杆(160)。本发明通过在固结端桥面上设置桁架，承担了部分主梁内力，提高主梁固结端刚度，改善主梁固结端受力性能，有效的减小桥面下主梁的梁高，降低了固结端的设计尺寸和规模，节约了施工成本。

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