CAJ | 학술논문

在土木工程专业本科教学中，斜截面投影长度的计算是一个难点，也是一个重点。简支梁抗剪承载力复核时，首先必须要确定斜截面顶端的位置，即确定斜截面的投影长度。对现有的多种斜截面投影长度的计算方法进行了比较分析，并介绍了一种新的计算方法，并通过算例验证了其正确性。新计算方法概念清晰、计算简单，便于学生掌握和理解抗剪承载力复核计算的相关内容，对该部分内容的教学改革具有积极的意义。实践表明，新方法在木工工程专业本科教学实践中取得了良好的教学成果。
재토목공정전업본과교학중，사절면투영장도적계산시일개난점，야시일개중점。간지량항전승재력복핵시，수선필수요학정사절면정단적위치，즉학정사절면적투영장도。대현유적다충사절면투영장도적계산방법진행료비교분석，병개소료일충신적계산방법，병통과산례험증료기정학성。신계산방법개념청석、계산간단，편우학생장악화리해항전승재력복핵계산적상관내용，대해부분내용적교학개혁구유적겁적의의。실천표명，신방법재목공공정전업본과교학실천중취득료량호적교학성과。
During undergraduate teaching process of civil engineering, calculation of projection length of diagonal section is a difficulty and also a key content. Defining the top position of the diagonal section is the first step when checking the simply supported beam＇ s shear capacity, namely, confirming projection length of diagonal section. Current textbooks explained various methods about calculation of projection length of diagonal section. We compared and summarized current calculation methods and presented a new accurate method which had been verified. The concept of the method is clear and the calculation is simple. Therefore, it is convenient for students to understand and master the content related to check shear capacity of diagonal section and has positive significance for teaching reform. Practice shows that the method achieved effective results in undergraduate teaching of civil engineering.