楔形宽腹工字形截面构件以其合理的受力形式，在门式刚架中被广泛应用。
The tapered I-section Beam-Columns with Slender Web is widely used in portal frame structure for its rational force form.
本文分别以矩形截面梁和工字形截面梁为例对此问题进行定量描述，以此消除教学中学生的疑义。
This essay makes quantitative description, taking rectangular section beam and I-shape section beam as examples respectively, in order to eliminate the doubt of students.
桥式起重机采用工字形截面作为主梁，使用多年后该结构形式的主梁上翼缘板和腹板连接的主焊缝及母材多处产生裂纹，甚至发生主梁断裂事故。
Cracks occurred in the main weld joining the web and upper wing panel of an overhead crane girder of I-section, some of which have expanded to the structure material and even led to girder fracture.
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