When tube's diameter is small and endlong ribs and concrete up and down the tube is comparatively thicker, the dissimila当开孔直径较小，纵肋和面层、底层混凝土相对较厚时，横孔板和顺孔板的刚度差异不大。
When tube’s diameter is big and endlong ribs and concrete up and down the tube is comparatively thiner, the dissimilarit当开孔直径较大,纵肋和面层、底层混凝土相对较薄时,横孔板和顺孔板的刚度才有较明显的差异。