分布式光纤传感技术在超长PHC管桩竖向承载试验中的应用  

Application of Distributed Fiber Optic Sensing Technique in Vertical Bearing Test of Super-Long PHC Pipe Pile

作　　者：刘梅梅[1,2] 刘军[2,3] 王湛 

机构地区：[1]华南理工大学土木与交通学院,广东广州510641 [2]中交四航工程研究院有限公司,广东广州510230 [3]广州湾工程质量检测有限公司,广东广州510230

出　　处：《港口科技》2018年第1期30-35,52,共7页Port Science & Technology

基　　金：广东省交通运输厅科技项目(科技-2016-02-024);广州科技计划珠江科技新星项目(201710010188)

摘　　要：为了能够精确得到超长PHC管桩竖向承载试验中承载力及侧摩阻力的分布规律,通过静载试验方法对PHC管桩进行承载力测试。采用分布式光纤传感技术,得到荷载-位移曲线及侧摩阻力随入土深度的分布曲线,进而得到不同土质侧摩阻力推荐值,并与规范取值进行对比。此研究验证分布式光纤传感技术在桩基静载试验中的可行性。To obtain the vertical bearing capacity and the distribution of lateral friction resistance of super-long PHC pipe pile in the vertical bearing test accurately, the static load test is applied to test the bearing capacity of PHC pipe pile. The load-displacement curves, lateral friction resistance-penetration depth curves and the recommended values of lateral friction resistance in different soil are obtained by the distributed fiber optic sending technique. The recommended values of lateral friction resistance are compared with those of the standards. This research verifies the feasibility of distributed fiber optic sensing technique in the static pile foundation test.

关 键 词：分布式光纤 PHC管桩 现场试验 侧摩阻力 

分 类 号：TU473.16[建筑科学—结构工程]