RC Bridge Decks Under Pulsating and Moving Load
RC Bridge Decks Under Pulsating and Moving Load
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脉动和移动荷载下的 RC 桥面板
DOI：
10.1061/(asce)0733-9445(1988)114:3(591
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
S. Beim
中科院分区：
文献类型：
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作者：
P. Perdikaris;S. Beim
在1/6.6比例的钢筋混凝土桥面板上进行了静荷载、固定点脉动荷载和移动恒轮荷载下的试验。考虑了各向同性和正交各向异性增强布置。目前AASHTO的设计方法（正交各向异性钢筋）似乎过于保守。移动轮荷载比固定脉动荷载造成的破坏要大得多，而且前者的开裂模式是分段的（网格状的），而且范围更广。所有加固模型桥面板的破坏模式均为冲切而非弯曲。结果表明，在满足使用性能和强度要求的前提下，可以大幅度减少桥面板的配筋量。
Tests were conducted on 1/6.6‐scale reinforced‐concrete bridge deck slabs under static load, pulsating load applied at a fixed point, and moving constant wheel‐load. Both isotropic and orthotropic reinforcing arrangements were considered. The current AASHTO design approach (orthotropic reinforcement) appears to be overconservative. The moving wheel‐load results in far more damage than the fixed pulsating load, and the cracking pattern due to the former loading is segmental (gridlike) and more extensive. The failure mode for all reinforced model decks is that of punching shear and not flexure. It is concluded that the reinforcement content in a bridge deck can be reduced significantly and satisfy both serviceability and strength requirements.