One real skew arch bridge is investigated using the finite element program ANSYS so as to study the generic phenomenon of bridge damage, especially the regularcracks.
本文以某斜交拱桥为研究对象，阐述其病害的一般现象，尤其是规则性裂缝。
2
The formulea for penetrating depthes of irregular cracks were derived from the principle of pene-rant inspection and the formulea for the penetrating depthes of regularcracks.
从渗透检测原理和规则裂纹渗透深度公式入手。推导出不规则裂纹渗透深度的公式。
3
Hard hats shall not be modified in any way, such as drilling and shall be regular inspected for visible cracks, defects and expiration date.