华东交通大学学报2023，Vol.40Issue(6)：39-46,8.
单双壁组合结构钢围堰受力分析及现场实测
Stress Analysis and Field Measurement of Steel Cofferdam with Single and Double Wall Built-up Structure
摘要
Abstract
To study the stress characteristics of deep water foundation steel cofferdams during construction,taking the 6#pier deep water foundation of Dingjiazhou Bridge as an example,finite element method ABAQUS software was used to establish a calculation model for single and double wall built-up structure steel cofferdams and tra-ditional double wall steel cofferdams.The stress and deformation of different structural steel cofferdams were calculated,and the mechanical behavior changes of steel cofferdams were analyzed.The research results indicate that the stress situation of single and double wall built-up structure steel cofferdams is more reasonable com-pared to traditional double wall steel cofferdams.The weakest position of the entire structure occurs between two horizontal ring plates on the bulkhead concrete,and stress concentration is prone to occur at the position where the outer wall plate contacts the horizontal truss.However,the maximum deformation and stress values of the outer wall plate are 9.69 mm and 122 MPa,respectively,which meet the requirements of the specifications.In addition,by comparing the numerical simulation results with the on-site monitoring results,it can be seen that the numerical simulation results of each measurement point are basically consistent with the on-site monitoring results,with an error rate of less than 15%.The actual structure is more inclined towards safety,indicating that numerical simulation can accurately evaluate the mechanical behavior of single and double wall built-up struc-ture steel cofferdams in actual engineering.关键词
深水基础/钢围堰/力学行为/数值模拟/现场监测Key words
deep water foundation/steel cofferdam/mechanical behavior/numerical simulation/on-site moni-toring分类
交通工程引用本文复制引用
李明..单双壁组合结构钢围堰受力分析及现场实测[J].华东交通大学学报,2023,40(6):39-46,8.基金项目
江西省自然科学基金面上项目(20232BAB204082) （20232BAB204082）
江西省自然科学基金青年项目(20224BAB214070) （20224BAB214070）
