Management of half joints in RTA bridges
Management of half joints in RTA bridges
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RTA 桥梁半接头的管理
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
A. Nicholas
中科院分区：
文献类型：
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作者：
A. Nicholas
近年来，桥梁半节点的性能越来越受到人们的关注。已知这种接头细节是有问题的，因为其容易劣化并且通常非常难以检查和维护。RTA拥有和维护超过50座包含半接头的桥梁。为了积极主动地管理RTA桥梁库存，桥梁工程公司正在寻求识别和评估其库存中包含混凝土半接头的所有桥梁。本文着眼于两座桥梁，已确定到目前为止，与半联合的关注。在第一座桥，斯托克顿桥，解决方案涉及更换轴承的半关节。由于通道有限，设计和安装了一个非常创新的顶升系统，利用了上部结构的非结构区域。在第二座桥罗斯维尔桥中，半接头处的问题因独特的张拉拉杆布置而进一步复杂化。这座桥的解决方案涉及重新设计张力拉杆，以提供进入接头的通道。永久性的解决方案预计将涉及使桥梁在半接头上连续。(a)有关本次会议的封面条目，请参阅IRRD摘要编号E218160。
In recent years, there has been heightened concern over the performance of half joints in bridges. This joint detail is known to be problematic as it is vulnerable to deterioration and is generally very difficult to inspect and maintain. The RTA owns and maintains in excess of 50 bridges that contain half joints in NSW. In order to proactively manage the RTA bridge stock, Bridge Engineering is seeking to identify and assess all bridges in their stock that contain concrete half joints. This paper looks at two bridges which have been identified to date with half joint concerns. In the first bridge, Stockton Bridge, the solution involved replacement of the bearings at the half joints. Due to limited access, a very innovative jacking system was designed and installed, making use of the non-structural areas of the superstructure. In the second bridge, Roseville Bridge, problems at the half joint were further complicated by a unique tension tie arrangement. The solution for this bridge involved redesign of the tension ties to provide access to the joints. The permanent solution is expected to involve making the bridge continuous over the half joint. (a) For the covering entry of this conference, please see IRRD abstract no. E218160.