摘要
分析了群桩管桩压桩路线、压桩速度和防挤沟与应力释放孔的工程效果。结果表明:群桩压桩路线应优先采用先中间再外围,然后是整排向一侧推进,如果兼有间隔压桩效果会更好;压桩速度越快,桩位水平偏位越多,当压桩速度超过7根/d,桩位水平偏位(≥99.5 mm)占比会降低;根据群桩场地邻近建筑物水平位移控制要求,确定压桩挤土的影响范围;防挤沟和应力释放孔对群桩管桩压桩的挤土效应起到了一定的抑制作用,而对桩顶水平偏位、竖向偏位和场地孔隙水压力变化影响较小。相关结论可为类似工程提供参考。
The pile pressing route,pile pressing speed,anti-extrusion ditch and stress release hole of group pile and pipe pile are analyzed.The results show that the preferential pile pressing route of group pile should be adopted firstly from the middle and then to the periphery,after that the whole row should be pushed to one side,and the effect will be better with interval pile pressing.The faster the pile pressing speed is,the more the horizontal deviation of pile position is.When the pile pressing speed exceeds 7 piles/d,the proportion of horizontal deviation of pile position(≥99.5 mm)will decrease.According to the horizontal displacement control requirements of buildings adjacent to the group pile site,the influence range of soil compaction by pile pressing is determined.The anti-extrusion ditch and stress relief hole have a certain inhibitory effect on the soil compaction effect of group pipe and pipe pile,and it has less effect on the horizontal and vertical deviation of pile top and the change of site pore water pressure.The relevant conclusions can provide reference for similar projects.
作者
林华桥
陶海冰
卢玉华
刘子振
单华峰
LIN Huaqiao;TAO Haibing;LU Yuhua;LIU Zizhen;SHAN Huafeng(Fangyuan Construction Group Co.,Ltd.,Taizhou,Zhejiang 318000,China;School of Civil Engineering and Architecture,Taizhou University,Taizhou,Zhejiang 318000,China)
出处
《建筑施工》
2022年第5期913-916,共4页
Building Construction
基金
方远建设集团科研项目
台州市科技计划项目(21gyb20)。
关键词
软土环境
静压群桩管桩
压桩措施
效应分析
soft soil environment
static pressure group pile and pipe pile
pile pressing measures
effect analysis
作者简介
林华桥(1976-),男,本科,高级工程师。通信地址:浙江省台州市椒江区市府大道298号方远大厦(318000)。电子邮箱:763294683@qq.com。
