复杂地质下锤击预应力管桩贯入度取值研究  

Study on penetration value of hammering prestressed pipe pile under complex geology

作　　者：王石高 WANG Shigao(Hunan Architectural Design Institute Group Limited Company,Changsha 410017,Hunan,China)

机构地区：[1]湖南省建筑设计院集团有限公司,湖南长沙410017

出　　处：《工程建设》2022年第4期24-29,共6页Engineering Construction

摘　　要：锤击预应力管桩施工最后贯入度作为收锤标准中一个很重要的定量指标,它的取值和地质、施工设备等密切相关,尤其在复杂地质条件下,确定一个安全、可靠、合理的最后贯入度值需要进行大量的分析研究工作。本文通过对珠海某项目锤击预应力管桩贯入度计算、试桩施工和检测结果进行分析研究,确定了施工最后贯入度取值控制标准。研究表明:在复杂地质条件下确定最后贯入度值不能仅凭经验,要通过大量的现场试桩来确定,才能既保证工程结构安全,又能提高工程经济性。As a very important quantitative index in hammer extraction standard,the final penetration degree of hammering prestressed pipe pile construction is closely related to geology and construction equipment.Especially under complex geological conditions,determining a safe,reliable and reasonable final penetration value requires a great deal of analysis and research.Based on the calculation of penetration degree of hammering prestressed pipe pile,the construction of test pile and the analysis of testing results of a project in Zhuhai,the control standard of the final penetration value of construction is finally determined.The results show that in complex geological conditions,the final penetration value can not only be determined by experience,but also be determined by a large number of field test piles,so as to ensure the safety of engineering structure and improve the engineering economy.

关 键 词：复杂地质 收锤标准 最后贯入度 试桩 单桩承载力 

分 类 号：TU753.3[建筑科学—建筑技术科学]