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福建省07线公路修建中,在桩号2258+80处1孔2公尺的半圆形石拱涵,由于老沟与路线斜交,经将涵位移靠岸边,提高涵底标高,水流由涵侧老沟排泄,变成旱地施工,为采用土牛拱胎创造了有利条件。施工经过1.土牛拱胎填筑在拱涵涵台砌石完工后,经过大约7～10天,开始填筑土牛拱胎,填土分层夯实,每层以20公分厚为宜,夯突度达到95%。尤其是拱圈部份,更要特别注意夯实。拱涵上、下游,都要填宽1公尺,边
In the construction of Highway 07 in Fujian Province, the semicircular stone arch culvert with a hole of 1 meter and a hole of 2258 + 80 at the station of No. 2258 +80, due to the oblique crossing of the old ditch and the route, Side of the old ditch excretion, into arid construction, the use of soil cattle arch created favorable conditions. After the construction of 1. Turtle arch fill the culvert culvert stone culvert completed, after about 7 to 10 days, began to fill soil cattle arch tires, fill layered compaction, each layer is appropriate to 20 cm thick, Rammer Degree of 95%. In particular, some of the arch ring, but also pay special attention to compaction. Arch culvert, downstream, should be widened 1 meter, while