...级；混凝土板厚；安全系数 [gap=990]Keyword：tunnel slope；concrete board liner；concrete grade；concrete board thickness；safety factor ...
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主要包括：加载面积和形状、混凝土强度、混凝土的组成、冲跨比及板厚、荷载作用位置、抗弯钢筋的配筋率、抗冲切钢筋以及比例效应。
Such as: load area and shape, strength of concrete, composition of concrete, depth of slab, load position ratio of reinforcement, punching shear reinforcement and scale effect.
机场水泥混凝土道面结构参数包括板厚、混凝土弯拉强度和弯拉弹性模量、地基反应模量。
Airport cement concrete pavement structural parameters include slab thickness, concrete bending strength elastic modulus and foundation reaction module.
1969年在混凝土板上铺设了51 mm厚的沥青混凝土铺装层。
In 1969 a (51mm) bituminous concrete overlay was placed on the concrete deck.
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