The strain in lengthwise direction of the corrugated steel web is close to zero, much smaller than that of the concrete plate. 波形钢腹板的纵向正应变值比混凝土顶板、底板小得多,数值上接近于零。
Initial imperfections of corrugated webs involve corrugation configuration imperfections and steel plate thickness imperfections. The corrugation configuration imperfections are simulated by uniform imperfections mode method, and steel plate thickness imperfections are simulated by thickness distribution function. 通过非线性有限元方法分析波纹钢腹板剪切屈曲极限荷载和屈曲模态,采用一致缺陷模态法模拟波形尺寸缺陷,钢板厚度缺陷则通过钢板厚度分布函数对单元厚度的修正来引入。
It consists of wave style steel web plate in the middle and reinforced concrete plate in both side. The form of the structure is the same with traditional ribbed beam hollow floor. The transverse shear is bore by the corrugated steel web plate. 该楼盖由上下钢筋混凝土板与中部的波纹钢腹板结合而成,结构形式与传统密肋梁空心楼盖相同,其波纹钢腹板主要承受横向剪力。
More and more corrugated steel plate bridges appear in the practical engineering in our country. However, the design and construction of the buried corrugated steel bridge structures refer mainly to the foreign standard and codes. 我国也开始重视此种结构,越来越多的覆土波纹钢板桥涵出现在实体工程之中,但是其设计和施工主要参考国外规范。