Dead weight loading simulating that of the bolts was applied at the bolt holes through the agency of steel balls and buttons.

螺栓荷载是用死荷重来模拟的，以钢球和压钮作为代用件，通过它们将此荷载施加于螺栓孔。

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The loading of a tubular busbar is equivalent to that of a large-span beam, and the stress on the cross -section is mainly the tensile stress of the dead weight bending moment with much deflection.

管型母线受力状况相当于大跨度的梁，截面上的应力主要是自重弯矩的拉应力，挠度比较大。

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