涵洞

Uneven settlement in culvert have caused stagger of caps and splayed jambs in some freeway, which affected the safety of traveling crane and must be strengthened.

某高速公路一涵洞由于基础出现不均匀沉降，造成涵洞盖板、八字墙与墙身发生错位，严重影响了行车的安全，必须进行加固处理；

He'll be researching how bridges and culverts that have been installed to allow tidal waters to move underneath roads between the sea and the salt marshes, well, they are often too small.

他会研究被安装用来允许潮水在海和盐沼之间的道路之下移动的桥梁和涵洞，它们通常都太小了。

The principle and experience of application of thermal pipe to the culvert engineering in permafrost region of the Qinghai-Xizang Plateau were introduced based on the practice in the experimental engineering on the plateau.

本文根据试验工程的应用状况，总结介绍热桩在多年冻土区涵洞工程中应用的原理和经验。