免共振液压振动锤施工的钢管桩承载力恢复规律的研究与应用  

Research & Application of Bearing Capacity Recovery Law of Steel Pipe Pile Constructed By Resonance Free HydraulicVibration Hammer

作　　者：唐康 TANG Kang(Shanghai Highway&BridgeCo.,Ltd.,Shanghai 200082,China)

机构地区：[1]上海公路桥梁(集团)有限公司,上海200082

出　　处：《中国市政工程》2020年第6期17-19,110,共4页China Municipal Engineering

摘　　要：由于免共振法钢管桩施工工艺具有效率高、影响低、污染小等特点,目前已越来越广泛应用于城市桥梁、公路桥梁、轨道交通以及民航机场等各个领域,其经济效益和社会效益十分显著。由于该工艺的施工原理是利用土体液化进行沉桩,因而桩基承载力增长受限于土体的恢复情况,与常规桩基有别。以免共振法施工的钢管桩试验数据为依托,根据现行其他类似桩基施工及验收规范标准,研究钢管桩承载力的增长恢复规律,可为类似工程钢管桩的检测和验收提供参考和依据。Due to the characteristics of high efficiency,low impact&low pollution,the resonance-free steel pipe pile construction technology has been more&more widely used in urban bridges,highway bridges,rail transit protection&civil aviation airports;and its economic&social benefits are very significant.Because the construction principle of the technology is to use soil liquefaction to drive piles,the increase of bearing capacity of pile foundation is limited by the recovery of soil,which is different from the conventional pile foundation.Relying on the test data of steel pipe piles constructed by the resonance-free method,according to other current similar pile foundation construction&acceptance standards,the study of the growth&recovery law of the bearing capacity of steel pipe piles can provide reference for the inspection&acceptance of similar engineering steel pipe piles.

关 键 词：钢管桩 免共振法 承载力 高应变检测 静载试验 

分 类 号：TU473.13[建筑科学—结构工程]