关于预应力混凝土管桩工程应用中的几点认识

Some understanding of prestressed concrete pipe pile in engineering application

当前我国预应力混凝土管桩的工程应用发展迅速、量大面广,有关管桩的承载特性、设计、施工、检测等工作应引起重视。总结分析了当前预应力混凝土管桩的发展历史、应用现状及其工程应用中常遇到的问题,结合相关国家规范、行业标准及工程实测资料,针对预应力混凝土管桩的适用条件、承载性状、施工质量控制等问题进行深入对比分析。通过具体工程实例,总结了预应力混凝土管桩工程应用中的注意事项,给出了减少管桩工程质量事故的预防措施,并对工程中如何安全适用、经济合理地应用预应力混凝土管桩提出建议。

The engineering application of prestressed concrete pipe piles has developed rapidly in China at present, and the products have enormous quantity and wide applications. Their bearing properties, design, construction and testing should be taken attention seriously. This paper summarizes and analyzes the developmental history of prestressed concrete pipe piles, the current situation of pipe pile application and some problems which we often encounters in engineering application of prestressed concrete pipe pile. Combined with national codes, industrial standards, and the measured data in engineering test of prestressed concrete pipe pile, this paper comparatively analyzes the conditions for the application of prestressed concrete pipe pile, the bearing properties on pipe piles shaft, and the construction quality management of prestressed concrete pipe pile in depth. Through the analysis of several engineering example, this paper summarizes some implementation notes. in the engineering application of prestressed concrete pipe pile. This paper gives some prevention measures of reducing the quality accidence in the prestressed concrete pipe pile engineering, and makes some recommendations on the application of security, economy and rationality in prestressed concrete pipe pile.