Stiffness and damage in masonry bridges
Stiffness and damage in masonry bridges
复制标题
砌体桥梁的刚度和损坏
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
B. Harvey
中科院分区：
文献类型：
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作者：
B. Harvey
与荷载相关的砖石桥梁损坏相对少见。作者只知道少数情况，几乎所有的情况都是在承受高铁路荷载的结构中。目前的评估工具不能提供实际发生的故障机制的任何指示。这些机制的特点是裂纹在不同位置的逐步发展。最近的观察表明：带有内拱肩墙的桥梁会产生复杂的刚度问题;所谓的拱肩裂缝和明显的环分离是同一问题的不同表现;一些小型桥梁的施工并不像假设的那样，但通常包括内拱肩墙。本文介绍了所观察到的损坏，它是相关的结构和产生损坏的机制。不提供任何形式的计算。本文仅提供了确定问题原因的第一步和潜在的分析方法。讨论从石工开始。
Load-related damage to masonry bridges is relatively uncommon. The author is aware of only a small number of cases and nearly all of them are in structures carrying high railway loads. Current assessment tools do not deliver any indication of the failure mechanisms that actually occur. Those mechanisms are characterised by the progressive development of cracks in various positions. Recent observations have made it clear that: bridges with internal spandrel walls create complex stiffness issues; so-called spandrel cracks and apparent ring separation are different manifestations of the same issue; the construction of some small bridges is not as assumed but often includes internal spandrel walls. This paper describes the damage observed, the construction to which it is related and the mechanisms creating damage. No calculations of any form are offered. This paper merely provides a first step in identifying the cause of a problem and a potential approach to analysis. The discussion begins with stone masonry ...