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一、问题的提出 《中南公路工程》1979年第一期所载“拱上排架设计方法的初步探讨”(以下简称《探讨》)一文提出了拱上排架内力计算方法(力法)。由于该法既没有考虑支座摩阻力可以传递水平力的作用,又没有计入主拱在活载垂直力作用下的位移致使排架产生推力这一重要因素,因此其计算结果与实际情况有较大的出入。支座摩阻力对水平力的传递作用与墩、台的抗推刚度和位移有关,可由0变至极限值,所以拱上排架内力计算中考
First, the issue put forward “South-South Highway Project” in 1979 the first issue contained in the “arches on the top of the design of a preliminary discussion” (hereinafter referred to as the “discussion”) proposed a method of calculating the arch on the arch of internal forces (method). Because this method does not consider the friction of the support can transmit the role of horizontal force, and did not account for the main arch under the action of the vertical load of the vertical displacement of the rack to produce thrust is an important factor, so the calculation results and the actual situation there Big discrepancy. Bearing frictional resistance force on the horizontal transfer of the pier and the Taiwan anti-push stiffness and displacement, can be changed from 0 to the limit value, so the arches on the rack calculation of internal force test