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福建长汀县在厦隘线365K+730改线处试建一座河卵石砌拱涵,经过四个月的行车,认为工程质量尚好。拱涵净跨为1.5公尺,矢度为二分之一的半圓拱,全长23.5公尺,涵顶填土高度5公尺。由于未经验算,拱圈厚采用25～30公分。这种拱涵由于全系就地取材,利用天然材料,又不需要细致加工,因此大大降低了成本,全涵总计砌石157立方(涵洞本
Changting County, Fujian Province, in the line of 365K +770 Haizi line to build a river pebble arch culvert, after four months of traffic, that the quality of the project is still good. The arch culvert has a net span of 1.5 meters and a half-degree arch with a full length of 23.5 meters and a culvert fill height of 5 meters. As unidentified, the arch ring thick with 25 to 30 cm. This arch culvert due to the Department of the local materials, the use of natural materials, without the need for meticulous processing, thus greatly reducing costs, total culvert 157 cubic meters (culvert