【摘要】：針對箱形截面梁橋的抗傾覆穩(wěn)定性問題,為研究目前設計中常用的幾種抗傾覆驗算荷載及其合理性,基于力學原理,推導了直線橋及曲線橋的抗傾覆穩(wěn)定系數(shù)計算公式,并提出了適用于設計的簡化公式,將所推導的計算公式用于實橋設計中。結果表明:公路-Ⅰ級荷載用于抗傾覆穩(wěn)定性驗算是偏小的,宜采用5m間距55t密排重車車隊;加大連接墩的支點間距可提高直線橋的抗傾覆穩(wěn)定性;隨著彎曲半徑的逐步減小,曲線橋抗傾覆穩(wěn)定系數(shù)逐步提高,橋越彎越不容易整體傾覆;大半徑曲線梁橋的抗傾覆能力最差,其次是直線橋,最后是小半徑曲線梁橋。
[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，

本文編號：2183203