605省道改扩建工程路基拼接技术分析  

Analysis of Roadbed Splicing Technology for the Reconstruction and Expansion Project of Provincial Highway 605

作　　者：郝冠军 黄菁颖 HAO Guanjun;HUANG Jingying(CRRC Urban Transportation Planning&Design Research Institute Co.,Ltd.,Nanjing,Jiangsu 211800,China;China Datang Corporation Ltd.,Nanjing,Jiangsu 211800,China)

机构地区：[1]中车城市交通规划设计研究院有限公司,江苏南京211800 [2]中国大唐集团有限公司,江苏南京211800

出　　处：《黑龙江交通科技》2025年第3期17-20,25,共5页Communications Science and Technology Heilongjiang

摘　　要：为减少省道改扩建工程中,由于拼接处理不好出现的一系列质量问题,以605省道改扩建工程为依托,首先阐述了不同工况下常用的关键技术及重难点,如堆载预压、水泥搅拌桩及高压旋喷桩等,再以高填方工况为例,进行数值分析,采用水泥搅拌桩处理后,工后沉降由17.7 cm降低到6.7 cm,减沉效果显著,并对运营期间沉降进行监测,证实了拼接方案的合理,最后给出路基拼接的几点建议。In order to reduce a series of quality problems caused by poor splicing processing in provincial road reconstruction and expansion projects,based on the 605 provincial road reconstruction and expansion project,this paper first elaborates on the key technologies and key difficulties commonly used under different working conditions,such as preloading,cement mixing piles,and high-pressure rotary jet grouting piles.Then,taking the high fill working condition as an example,numerical analysis is carried out.After using cement mixing piles for treatment,the post construction settlement is reduced from 17.7 cm to 6.7 cm,and the settlement reduction effect is significant.The settlement during operation is monitored to confirm the rationality of the splicing scheme.Finally,several suggestions for roadbed splicing are given.

关 键 词：路基拼接 堆载预压 水泥搅拌桩 高填方 沉降 监测 

分 类 号：U416.221[交通运输工程—道路与铁道工程]