摘要
国道108线禹门口黄河公路大桥西引桥为上跨黄韩侯铁路和候西铁路而设,设计为一联(50+85+50)m双幅预应力混凝土变截面连续箱梁桥,采用转体法施工。在满足桥梁使用功能的前提下,通过调整中跨合龙段位置,施工过程中采用纵横不对称T构转体,并配合使用移动防护吊架施工中跨合龙段,最大限度地减少了桥梁施工对既有铁路运营的干扰;桥梁各项计算结果均满足设计规范要求。
The west approach bridge of Yu-Men-Kou Yellow River highway bridge on NO. 108 national highway is designed to cross Huangling-Hancheng-Houma railway and Houma-Xi ＇ an railway. It is designed as a combined（50＋ 85 ＋ 50） m double-girded prestressed concrete continuous box beam bridge and constructed by swivel method. The results show that,under the premise of meeting the function of the bridge,vertical and horizontal asymmetric T-structure swivel bodies are adopted in the construction and the mid-span closing segment is constructed with mobile protection hanger to minimize the interference of the bridge construction on the existing railway operation. It is proved that the calculation results of the bridge meet up with the design specifications.
作者
井江永
JING Jiang-yong(China Railway First Survey ＆ Design Institute Group Co.,Ltd.,Xi＇an 710043,China)
出处
《铁道标准设计》
北大核心
2018年第9期67-71,共5页
Railway Standard Design
关键词
公路桥
连续梁
预应力混凝土
转体施工
设计
Highway bridge
Continuous beam
Prestressed concrete
Swivel construction
Design
