X-shaped steel diaphragm structural system of fabricated beam bridge and construction method of X-shaped steel diaphragm structural system: Fid-Bau Portal

X-shaped steel diaphragm structural system of fabricated beam bridge and construction method of X-shaped steel diaphragm structural system

LI CUIHUA / ZHANG YUTAO / PENG WEIBING / ZHOU GUANGEN

Abstract

The invention relates to a fabricated beam bridge X-shaped steel diaphragm structural system and a construction method thereof, and belongs to the technical field of bridge assembly and construction. The fabricated beam bridge X-shaped steel diaphragm structural system comprises a pair of main beams, and an X-shaped steel diaphragm composed of H-shaped steel, stiffening ribs, embedded steel plates, steel plate connecting pieces, gusset plates and flange plates is arranged between the two main beams; and the H-shaped steel and the stiffening ribs form a main body rod piece in the X-shaped steel diaphragm. The characteristics of light self weight, high tensile capacity and convenience in construction are realized. The stability of the pre-embedded steel plate in the main beam can be improved, and the tensile property of the pre-embedded steel plate is enhanced; by adopting the assembly construction method for adjusting errors in stages, the problem of assembly errors can be well solved, the installation feasibility of the steel diaphragm is ensured, and the construction speed and the construction quality of the assembly type beam bridge are remarkably improved.

本发明涉及一种装配式梁桥X型钢横隔梁结构体系及其施工方法，所属桥梁装配建造技术领域，包括一对主梁，两主梁间设有由H型钢、加劲肋、预埋钢板、钢板连接件、节点板和翼缘板组成的X型钢横隔梁，H型钢及加劲肋组成X型钢横隔梁中的主体杆件。具有自重轻、抗拉能力强、施工便捷的特点。能够提高预埋钢板在主梁中的稳固性，加强预埋钢板的抗拉性能；采用分阶段调整误差的装配施工方法，能够较好应对装配误差的问题，保证钢横隔梁的安装可行性，显著提升装配式梁桥的施工速度与施工质量。

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