岩土工程学报2024，Vol.46Issue(z1)：138-142,5.DOI:10.11779/CJGE2024S10010
高应变动测技术在如东海域大直径钢管桩基工程中的应用研究
Application of high-strain testing in large-diameter steel pipe pile project in Rudong sea area
摘要
Abstract
Based on the initial and repeated high-strain test data of three large-diameter open steel pipe piles in Rudong sea area of Jiangsu Province,a pile end reduction coefficient η applicable to the sea area and the formula for calculating the recovery of bearing capacity is proposed,and a technical basis for evaluating the bearing capacity of large-diameter steel pipe piles in the sea area is provided.According to the high-strain test data of open steel pipe piles,the recovery coefficients of the lateral resistance of the test piles are much greater than those of the end resistance,and the lateral resistance of the piles increases significantly over time,but the increase in the end resistance is very small.Based on this,it is recommended to use the pile end resistance reduction coefficient η=0.05 for large-diameter open steel pipe piles in the Rudong sea area.In addition,by exploring the recovery and growth mechanism of pile foundation soil,a formula for calculating the recovery of pile foundation bearing capacity is proposed,and the verification error is within 10%.关键词
海上风电/高应变动测/大直径钢管桩/桩端折减系数/桩基承载力恢复Key words
offshore wind power/high-strain testing/large-diameter steel pipe pile/pile end reduction coefficient/recovery of pile foundation bearing capacity分类
土木建筑引用本文复制引用
顾龙声,张宇亭..高应变动测技术在如东海域大直径钢管桩基工程中的应用研究[J].岩土工程学报,2024,46(z1):138-142,5.基金项目
天津水运工程勘察设计院有限公司科研创新基金项目(SJY202110) （SJY202110）
