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选取公路悬索桥钢箱梁正交异性板桥面典型结构,针对重车道和超车道的吊索区和跨中区等4个桥面区域,确定荷载的纵向和横向施加范围,计算23 668种荷载工况作用,分别对顶板横向应力与纵向应力和顶板纵肋纵向应力的影响面进行系统分析,总结出荷载在不同平面位置作用对局部应力的影响规律。提取并处理4个桥面区域内所有荷载工况的3.7亿局部应力数据,进一步对桥面顶板横向、顶板纵向和顶板纵肋纵向的最大拉应力与最大压应力共6种局部应力的包络面进行深入分析研究,总结出桥面局部应力的分布规律和桥面局部应力极值的发生部位。
Select the typical structure of the bridge deck of orthotropic plate girder of the suspension bridge of the highway, for the four deck areas such as the sill area and the mid-span of the heavy-carriageway and the overtaking lane, determine the longitudinal and transverse application range of the load and calculate 23 668 kinds of loads The effect of the load on the horizontal stress and the longitudinal stress of the roof and the longitudinal stress of the longitudinal rib of the roof are systematically analyzed respectively. The influence of loads on the local stress in different plane positions is summarized. Extracting and processing 370 million local stress data for all loading conditions in 4 bridge deck areas, further 6 kinds of local stress envelopes of the maximum tensile stress and the maximum compressive stress in the deck longitudinal direction, the roof longitudinal direction and the roof longitudinal rib longitudinal direction Surface depth analysis and study, summed up the distribution of local stress and bridge deck bridge local stress extremities of the site.