發(fā)布時(shí)間：2018-08-14 14:49

【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(shè)計(jì)中常用的幾種抗傾覆驗(yàn)算荷載及其合理性,基于力學(xué)原理,推導(dǎo)了直線橋及曲線橋的抗傾覆穩(wěn)定系數(shù)計(jì)算公式,并提出了適用于設(shè)計(jì)的簡化公式,將所推導(dǎo)的計(jì)算公式用于實(shí)橋設(shè)計(jì)中。結(jié)果表明:公路-Ⅰ級(jí)荷載用于抗傾覆穩(wěn)定性驗(yàn)算是偏小的,宜采用5m間距55t密排重車車隊(duì);加大連接墩的支點(diǎn)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(hào)：2183203