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桥梁支座必须能传递现行设计的大水平荷载。由于潮流趋向于连续、无缝、超静定的结构,因此,水平荷载与竖向荷载的比值正在增加,这就需要对支座的稳定进行研究。本文对于正常条件和特殊的暂时条件,推导了两种稳定标准,并提出在正常荷载和特殊暂时荷载作用下的支座表面倾覆安全系数,还给出了三种支座稳定验算的实例。
The bridge support must be capable of transmitting the large horizontal loads of the current design. As the tide tends to be continuous, seamless and statically indeterminate, the ratio of horizontal to vertical loads is increasing, which requires a study of the stability of the support. In this paper, two kinds of stability criteria are derived for normal conditions and special temporary conditions, and the safety factor of bearing surface overturning under normal load and special transient load is proposed. Finally, examples of three bearing stability tests are also given.