基于预应力锚栓技术的悬挂式单轨钢柱脚设计

Design of Suspended Monorail Steel Column Base Based on Pre-stressed Anchor Bolt Technology

摘要:

随着中国城市化进程的深化，全国轨道交通建设形势如火如荼。悬挂式单轨交通桥墩采用预制拼装钢立柱，施工速度快，占地少，可有效减少轨道交通建设对现状交通的影响。现以宁波杭州湾新区城市全域旅游配套基础设施工程为背景，对钢立柱柱脚常见构造形式进行回顾和比较，提出了一种基于预应力锚栓的节点连接形式。该节点连接形式施工方便，整体性好，节点刚度大，抗疲劳性能优越。

Abstract:

With the deepening of urbanization process in China, the national rail transit construction form is in full swing. Suspended monorail traffic piers use prefabricated assembled steel columns, which are fast in construction and occupy less land, and can effectively reduce the impact of rail transit construction on the current traffic. Taking the city-wide tourism supporting infrastructure project of Ningbo Hangzhou Bay New Area as the background, the common construction forms of steel column base are reviewed and compared. A node connection form based on pre-stressed anchor bolts is proposed. This node connection form is easy to construct, and has the good integrity, high node stiffness and superior fatigue resistance.