摘要
为弥补现阶段伺服钢支撑单一阈值作为标定轴力的不足,利用弹性地基梁模型进行基坑围护结构简化,采用考虑支撑极限承载力为上限的可变“集中力”模拟伺服钢支撑,基于ABAQUS软件建立有限元分析模型并与遗传算法进行联合运算,提出了伺服钢支撑轴力动态设置的联合求解法。利用伺服钢支撑的伺服轴力调整功能,基于本文的伺服钢支撑轴力动态设置方法,以实际工程需求为导向,通过目标函数设置可给出最优的轴力参考值,为技术人员伺服轴力调控提供参考依据,助力实现基坑“主动调控、微变形控制”的高质量发展目标。
To address the current limitation of using a single threshold for the calibration of servo steel support axial force,an elastic foundation beam model was employed to simplify the excavation support structure.A variable“concentrated force”approach,considering the ultimate bearing capacity of the support as the upper limit,was adopted to simulate the servo steel support.A finite element analysis model was developed using ABAQUS software combined with a genetic algorithm for joint computation,proposing a combined solution method for the dynamic setting of servo steel strut axial force.Utilizing the servo steel strut’s dynamic force adjustment function and based on the dynamic axial force setting method proposed in this paper,the optimal force reference value can be determined through objective function setting,providing reference guidelines for technical staff to regulate servo steel strut’s support forces,thereby contributing to the realization of the high-quality development goals of“active regulation,micro-deformation control”in excavation engineering.
作者
毕湘利
郭慧吉
狄宏规
刘洪波
吴迪
BI Xiangi;GUO Huiji;DI Honggui;LIU Hongbo;WU Di(Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety,Tongji University,Shanghai 201804,China;Shanghai Shentong Metro Co.,Ltd.,Shanghai 201102,China)
出处
《同济大学学报(自然科学版)》
北大核心
2025年第8期1262-1268,共7页
Journal of Tongji University:Natural Science
关键词
深基坑
伺服钢支撑
遗传算法
轴力设置
deep foundation pit
servo steel struts
genetic algorithm
axial force setting
作者简介
第一作者:毕湘利,教授级高工,工学博士,主要研究方向为城市地下空间工程。E-mail:bixiangli@shmetro.com;通信作者:郭慧吉,工程师,工学博士,主要研究方向为地下工程智能施工与控制。E-mail:guohuiji@shmetro.com。
