河北水利电力学院学报2025，Vol.35Issue(2)：55-60,75,7.DOI:10.16046/j.cnki.issn2096-5680.2025.02.010
蔡家庄特大桥临近既有线深基坑支护设计
Design of Deep Foundation Pit Support near the Existing Line of Caijiazhuang Large Bridge
摘要
Abstract
The depth of deep foundation pit of the main pier of Caijiazhuang Large Bridge is 11.25m,the groundwater level is high,and it is close to the Yangshe railway in operation.After analysis and trial calculation,large-diameter Locking steel pipe piles are adopted as the main supporting structure.Accord-ing to the variation law of soil and water side pressure,the vertical spacing of the purlin surrounding sys-tem is reasonably designed.At the same time,in order to prevent water,the construction method of pou-ring isolated cement mortar in the lock is used to facilitate the removal of the steel pipe pile.The strength,horizontal displacement and settlement of existing railway subgrade outside the pit meet the requirements by using the straightening software to calculate the supporting structure.Moreover,the results of construction monitoring are in good agreement with the theoretical calculation value,and the removal of the protective pile is smooth.This has a good reference significance for the construction and support scheme design of deep foundation pit near the existing line.关键词
深基坑/临近铁路/锁口钢管桩/止水/地表沉降Key words
deep foundation pit/adjacent railway/locking steel pipe pile/still waters/surface settle-ment分类
建筑与水利引用本文复制引用
才源..蔡家庄特大桥临近既有线深基坑支护设计[J].河北水利电力学院学报,2025,35(2):55-60,75,7.基金项目
河北省自然科学基金面上项目(E2022210028) （E2022210028）
