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在小变形假定下,张弦拱结构的力学分析是线性问题.这样可以把一般解分解为两个独立解:简支扁拱仅在外荷载作用下的静定解、仅受拱与悬索间的相互作用力荷载下的解.张弦拱力学分析的通解即为这两个解之和.它仅含有未知悬索拉力增量水平投影的一次冪.利用拱两端锚固位置处,由拱和悬索分别计算的水平位移相等这一端位移协调条件,就可以得到一般计算公式.
Under the assumption of small deformation, the mechanical analysis of the string arch structure is a linear problem, so that the general solution can be decomposed into two independent solutions: the statically determinate solution of simply supported flat arch under the action of external load, The solution of the interaction force under load.The general solution of the mechanical analysis of the string chord is the sum of these two solutions which contains only the first power of the horizontal projection of the unknown incremental tension force of the suspension cable.Using the arch at both ends of the arch, And the suspension cable separately calculate the horizontal displacement equal to the end of the displacement coordination conditions, you can get the general formula.