箱形截面直线桥及曲线桥抗倾覆稳定性分析
发布时间：2018-08-14 14:49
【摘要】：针对箱形截面梁桥的抗倾覆稳定性问题,为研究目前设计中常用的几种抗倾覆验算荷载及其合理性,基于力学原理,推导了直线桥及曲线桥的抗倾覆稳定系数计算公式,并提出了适用于设计的简化公式,将所推导的计算公式用于实桥设计中。结果表明:公路-Ⅰ级荷载用于抗倾覆稳定性验算是偏小的,宜采用5m间距55t密排重车车队;加大连接墩的支点间距可提高直线桥的抗倾覆稳定性;随着弯曲半径的逐步减小,曲线桥抗倾覆稳定系数逐步提高,桥越弯越不容易整体倾覆;大半径曲线梁桥的抗倾覆能力最差,其次是直线桥,最后是小半径曲线梁桥。
[Abstract]:Aiming at the problem of anti-overturning stability of box-section girder bridge, in order to study several kinds of anti-overturning checking load and its rationality which are commonly used in design at present, based on the mechanics principle, the formulas for calculating the anti-capsizing stability coefficient of linear bridge and curved bridge are derived. A simplified formula suitable for design is put forward, and the derived formula is used in the design of real bridge. The results show that the highway-鈪，
本文编号：2183203
[Abstract]:Aiming at the problem of anti-overturning stability of box-section girder bridge, in order to study several kinds of anti-overturning checking load and its rationality which are commonly used in design at present, based on the mechanics principle, the formulas for calculating the anti-capsizing stability coefficient of linear bridge and curved bridge are derived. A simplified formula suitable for design is put forward, and the derived formula is used in the design of real bridge. The results show that the highway-鈪，
本文编号：2183203
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