文档介绍：成渝高速内江新龙坳立交桥维修加固工程
变形监测方案探讨
【摘要】: 位于成渝高速公路 K174+670 处的内江新龙坳立交桥是一座中承
式混凝土提篮拱桥,建成于 1994 年。该桥在长期的运营中,由于台帽长期
不均匀受力、伸缩缝橡胶老化破坏、车辆多年运行及热胀冷缩,铺装层产生
断裂等原因导致桥梁的实际运营状态与理论运营状态出现较大偏差,使得桥
梁使用中存在较大的安全隐患。为了保证桥梁的安全运营,有必要对桥梁进
行维修加固。在大型桥梁维修施工过程中,由于应力的改变和结构破坏等因
素影响,必需对桥梁进行变形监测,使变形量在一个容许的范围。本文简单
介绍了建筑物变形观测的意义、内容和目的,结合成渝高速内江新龙坳立交
桥维修加固工程,着重阐述了桥梁的变形监测方案的设计及变形观测点的分
布。
【关键词】:桥梁工程变形监测方案设计桥梁加固
1
The Discussion of the Deformation Monitoring Program to the Xinlongao
Intersect Bridge of Neijiang Located in site of cheng-yu High Speed Highway
【 Abstract】: The Xinlongao inter bridge of Neijiang located in the K174+670
site of cheng-yu high speed highway is a half-through Concrete arch bridge. It
was finished in 1994. For the long-term Operation, The Xinlongao Inter Bridge
has many secure incipient faults because of the long-term asymmetric stress of
bridge set hats ; the rubber of expansion joints aging break; the vehicle
circulate for many years; heat-expansion or cold-shrink of bridge ; the layer
has created cracks etc. For the sake of the safe operation of bridge, there is
necessity to carry on maintaining to reinforce to the bridge. In the large bridge
maintain construction process, because of should the change and structure of
the dint break etc, it is need to carry on the deformation monitoring to the
bridge, made the deformation in a allowable scope. Adopt the high accuracy
transforms to measure a reflection to maintain a construction the bridge in the
process the variety of the structure, for construction the safety provide
dependable reference assurance. In this paper, the author introduced simply the
meaning, contents and purpose of the deformation of the building; and
emphasized to elaborate the design of the deformation monitoring of bridge and
the distribution of the points of deformation monitoring to the bridge based on
the cheng-yu high speed's Xinlongao interchange to maintain to reinforce
e