中辭英(15點)

安濟 the bridge is 單孔 opens the shoulder Tanzania arc stone arch
bridge, the bridge length 50.82 meters, the width 9 meters. Above the
bridge ticket about respectively has two slightly spatially to hit the
ticket. 安濟 the bridge round segmental arc center of a circle angle
only has 84°, slightly is smaller than 1/4 circumference, basically
is a 1/4 round arched bridge (Tanzania arc round arched bridge),
橋拱 the elevation angle for 42° (is near 45°). In in the same
level span situation, 1/4 arc arched bridge 弧長, compared to the
semicircle arc arched bridge 弧長, is deficient 43%. Therefore
安濟 the bridge bridge body uses the stone material, must save above
40% compared to the same span semicircle arched bridge, both reduces
the bridge body the dead weight with the stress, and causes the bridge
floor slope quite to be smooth, on convenient bridge transportation.
Because 安濟 bridge 圓弧拱 span big, 圓弧拱 夠 was still
high, the aquatic ships communicated pass extremely conveniently. Li
Ch'unneng realizes the great span arched bridge in more than 1,300
year ago Sui Tai certainly is not non- 半圓拱 may not, thus
completes this kind of span to be big, the flat rate low 單孔 1/4
circle arches the bridge structure, is constructs in the history a
valuable creation.

安濟 the bridge is 單孔 opens the shoulder Tanzania arc stone arch
bridge, the bridge length 50.82 meters, the width 9 meters. Above the
bridge ticket about respectively has two slightly spatially to hit the
ticket. 安濟 the bridge round segmental arc center of a circle angle
only has 84°, slightly is smaller than 1/4 circumference, basically
is a 1/4 round arched bridge (Tanzania arc round arched bridge),
橋拱 the elevation angle for 42° (is near 45°). In in the same
level span situation, 1/4 arc arched bridge 弧長, compared to the
semicircle arc arched bridge 弧長, is deficient 43%. Therefore
安濟 the bridge bridge body uses the stone material, must save above
40% compared to the same span semicircle arched bridge, both reduces
the bridge body the dead weight with the stress, and causes the bridge
floor slope quite to be smooth, on convenient bridge transportation.
Because 安濟 bridge 圓弧拱 span big, 圓弧拱 夠 was still
high, the aquatic ships communicated pass extremely conveniently. Li
Ch'unneng realizes the great span arched bridge in more than 1,300
year ago Sui Tai certainly is not non- 半圓拱 may not, thus
completes this kind of span to be big, the flat rate low 單孔 1/4
circle arches the bridge structure, is constructs in the history a
valuable creation.