路基工程Issue(1)：99-105,7.DOI:10.13379/j.issn.1003-8825.202506040
浸水前后花岗岩与混凝土滑动摩擦系数取值探讨
Investigation on the Sliding Friction Coefficient of Granite and Concrete before and after Water Immersion
摘要
Abstract
The main bridge anchorage of a cross-sea bridge project was an offshore anchorage,with the foundation bearing layer consisting of completely weathered granite and sandy strongly weathered granite.This stratum exhibited the characteristics of disintegration and softening upon water contact.In the design of the anchorage,the horizontal friction coefficient between the caisson foundation and the bedrock after water softening must be fully considered to determine the anchorage scale.Multiple methods were used to verify the friction coefficient between the completely weathered granite,sandy strongly weathered granite,and concrete before and after immersion,including reference to similar project values,code-recommended values,back-calculation of shear strength parameters,and field tests.The results show that:the friction coefficient of completely weathered granite is 0.25 in its natural state and 0.22 after immersion,while that of sandy strongly weathered granite is 0.50 in its natural state and 0.34 after immersion.关键词
海中锚碇/全/强风化花岗岩/持力层/水下开挖/浸水/摩擦系数/易位测试Key words
offshore anchor/completely/strongly weathered granite/bearing stratum/underwater excavation/immersion/friction coefficient/transsituation test分类
建筑与水利引用本文复制引用
孙治国,马骏,张雪东..浸水前后花岗岩与混凝土滑动摩擦系数取值探讨[J].路基工程,2026,(1):99-105,7.基金项目
2025年科技服务业企业效能提升科研项目(20250467476) （20250467476）
