长春预制装配式城市桥梁设计与施工

在城市桥梁建设中,传统现浇施工方案对环境和交通影响大,预制装配桥梁施工速度快、环境污染小,是绿色建造的体现。长春某高架桥梁采用预制装配式方案,上部结构采用预制装配式预应力混凝土小箱梁和装配式钢箱梁,下部结构采用预制装配式三节段盖梁和分节预制墩柱,实现了绿色工程建设,着重介绍了预制装配式桥梁上下部结构设计和施工要点。

Design and Construction of Prefabricated Urban Bridges in Changchun

In the construction of urban bridges,the traditional cast-in-place construction schemes have a large impact on the environment and traffic.The prefabricated bridges have a fast construction speed and low environmental pollution,which is a reflection of green construction.A prefabricated scheme is adopted for a viaduct in Changchun.The prefabricated prestressed concrete small-box girder and fabricated steel box girder are adopted for the superstructure,and the prefabricated three-segment bent cap and sectioned prefabricated pier are adopted for the substructure.The green engineering construction is realized.The design and construction essentials of superstructure and substructure for prefabricated bridge are specially introduced.