抱压式锚杆静压桩机夹桩箱的有限元分析  

Finite Element Analysis of Pile Clamping Box of Cramp-pressing Type Anchor Static Pile Driver

作　　者：吕文龙 沈仁良 Lyu Wenlong;Shen Renliang

机构地区：[1]广东省建筑科学研究院集团股份有限公司,广东省广州市510500

出　　处：《工程机械》2022年第10期73-76,I0023,共5页Construction Machinery and Equipment

基　　金：住房与城乡建设部科技计划资助项目(No.2017-k10-006);广东省住房与城乡建设厅科技计划资助项目(2020-13)。

摘　　要：为研究抱压式锚杆静压桩机夹桩箱的受力和变形,促进夹桩箱的技术改进,提高压桩质量,建立夹桩箱的有限元模型,对压桩时的夹桩箱进行有限元分析,分析结果表明:1)夹桩箱的腔室转角、腔室外侧壁及底板圆孔附近为等效应力较大的位置;2)夹桩箱腔室的外表面为变形最大的位置;3)夹桩机构液压缸作用力为500kN时,夹桩箱最大等效应力值为337MPa,小于钢材屈服强度;4)夹桩机构液压缸作用力为500kN时,夹桩箱的最大变形量仅为0.087mm,不影响使用。In order to study the stress and deformation of the pile clamping box of the cramp-pressing anchor static pile driver,to promote the technical improvement of the pile clamping box and to improve the quality of pile pressing,a finite element model of the pile clamping box is established,and the finite element analysis of the pile clamping box during pile pressing is carried out.The analysis results show that:1)the corner of the chamber,the outer wall of the chamber and the vicinity of the bottom plate circular hole of the pile clamping box are the locations with larger equivalent stress;2)the outer surface of the pile clamping box chamber is the location with the largest deformation;3)when the hydraulic cylinder of the pile clamping mechanism is acting at500 kN,the maximum equivalent stress of the pile clamping box is 337 MPa,which is less than the yield strength of the steel;4)when the hydraulic cylinder of the pile clamping mechanism is acting at 500 kN,the maximum deformation of the pile clamping box is only 0.087 mm,which does not affect the use.

关 键 词：压桩 夹桩机构 抱压 锚杆静压桩机 有限元分析 

分 类 号：TU753[建筑科学—建筑技术科学]