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对抛物线型单层柱面网壳的静力稳定性能进行了研究.比较了抛物线型单层柱面网壳与圆柱面单层柱面网壳和倒悬链线单层柱面网壳的静力稳定性能.对抛物线型单层柱面网壳进行参数分析,并对抛物线型单层柱面网壳进行结构优化.研究表明:与圆柱面网壳相比,抛物线型单层柱面网壳的极限荷载有大幅度增大;长跨比、矢跨比对网壳的极限荷载影响显著;初始几何缺陷对网壳的极限荷载有较大影响;网壳的斜杆相交角在50°左右,网壳的静力稳定性能最好;按等比数列布置拱向网格间距,比值α的取值在0.85到0.95之间时,网壳的静力稳定性能最好.
The static stability of the parabolic monolayer reticulated reticulated shell is studied.The static forces of the parabolic monolayer reticulated shell and the cylindrical single-layer cylindrical reticulated shell and the inverted catenary single-layer cylindrical reticulated shell are compared The stability of the parabolic monolayer reticulated shell was analyzed and the parabolic monolayer reticulated shell was structurally optimized.The results show that compared with the cylindrical reticulated shell, the parabolic monolayer reticulated shell The ultimate load has a significant increase; long-span ratio, pitch-span ratio significantly affect the ultimate load of the reticulated shell; the initial geometric defects have a greater impact on the ultimate load of the reticulated shell; the diagonal angle of the reticulated shell is about 50 °, The static stability of the reticulated shell is the best. The geometric spacing of the arches to the grid is arranged according to the geometric sequence. When the ratio α is between 0.85 and 0.95, the static stability of the reticulated shell is the best.