嘉绍大桥直径3.8m钻孔灌注桩试桩与施工的工效分析

Test Pile of Diameter 3.8-m Cast-in-site Pile and Analysis on Construction Efficiency for Jiashao Bridge

该文以嘉绍大桥3.8m大直径钻孔灌注桩工艺试桩和实际施工情况为背景,通过工效分析,确定和检验招投标设置的关键设备关键参数及投入数量等强制条件的合理性,验证工期要求的合理性。同时,通过钻孔灌注桩实际施工的工效分析,了解各种大直径钻机的工作性能,可为类似工程提供参考。

Taking the technological test pile of diameter 3.8-m cast-in-site pile and the practical construction of Jiashao Bridge as the background,and through the analysis of construction efficiency,the article determines and checkouts the key parameters of the key equipment and the rationality of forced conditions for the equipment using quantity defined by the bid and tender,and validates the rationality required for the construction period.At the same time,the article analyzes the practical construction efficiency of cast-in-site pile to understand the working performances of various large-diameter drilling machines able to be referred for the similar projects.