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在板梁的制造中,由于型材长度的限制或为了充分利用材料,板梁的组成断面中的一部分或全部要在某一截面上进行拼接。对于有拼接断面的有效截面抵抗矩W_0的计算,是板梁计算中必须解决的一个重要问题。 《铁路桥梁检定规范》第3—19条中2项规定: 位于接头或连接部分的截面,其有效截面抵抗矩为: (1) 按连接板 W_0=(∑I_0+∑I_(β0))|Y_m (3—10) (2) 按连接铆钉
In the manufacture of sheet girders, some or all of the component sections of the sheet girders are spliced in certain sections due to the length limitation of the profile or in order to make full use of the material. For the calculation of effective cross-section moment of resistance W_0 with spliced section, it is an important problem that must be solved in the calculation of plate and girder. Section 2 of Article 3-19 of the “Regulations for the Verification of Railway Bridges” stipulates that the effective cross-section moment at the section of the joint or connecting part is: (1) Pressing the connecting plate W_0 = (ΣI_0 + ΣI_ (β0)) | Y_m (3-10) (2) Press to connect rivets