水下灌注混凝土施工质量事故安全预防新对策

通过工程对比试验和施工实例,准确描述了桩基工程水下灌注混凝土的运动过程,指出并纠正了从业人员施工及其认知存在的误区,对漏筋(缩径)、浮笼、断桩等常见桩基事故发生的原因提出了有别于施工规范和相关施工手册的新观点,在不断成功的施工实践中总结出了强效克服常见水下灌注混凝土质量事故的新办法——拔管后导管埋深1 m为度控制法,是对现行桩基技术规范的补充和完善.

A New Prevention Method of Concrete Quality Faults in Pile Foundation Engineering Underwater

Based on some experiments and instances,the movement of concrete in pile foundation eogineering underwater is described exactly;and some mistakes which are made by operating staffs always,are pointed out.Furthermore,the authors put forward some new views about the reason of some pile construction malfunctions which are different from construction procedure and hand book; and summarize a new method that overcomes quality faults always occur in pile foundation engineering underwater.The new method controls 1 m embedded depth tube drawing.The paper is a supplement of the current technical code of pile foundations.