摘要
文章介绍了马鞍山长江公路大桥左汊悬索桥南锚碇超大沉井"3次接高3次下沉"的施工方案,对沉井监控的内容和标准,及下沉应力应变测试方案进行了详细的论述,最后对沉井几何姿态等监控及纠偏措施进行了阐述。实践证明,该施工方案和监控方案正确,确保了沉井下沉到预定标高,同时沉井的结构应力状态、几何姿态以及周边建筑物安全状况都得到较好的控制,为类似工程建设提供有益的参考。
Anchorage is a critical part of the suspension bridge.This paper introduced construction scheme of the large south anchorage caisson-sinking of Maanshan Yangtze River.Then the construction monitor content and criterion,especially the testing method on the stress and strain of the caisson-sinking was summarized in details.At last the control on the gesture of the caisson and the corresponding corrective measures were described.The practice had proved that the construction plan and monitoring scheme was right to keep the caisson sank to the predetermined elevation.The stress state and geometric posture of the caisson as well as the surrounding buildings were in good control.It provided a reference for similar projects.
出处
《现代交通技术》
2012年第6期43-47,共5页
Modern Transportation Technology
