摘要
本文结合海口市琼山区博雅片区城市更新工程实例,基于有限元分析平台构建三维数值模型,系统研究装配式混凝土组合模壳体系(IRF体系)施工阶段封堵板及墙体整体的受力分布与变形特性。模型充分考虑混凝土自重、温度梯度、水化放热效应及材料与接触非线性特征,通过热-力耦合计算,量化分析墙体关键区域的应力集中、位移发展及其影响因素。研究表明:封堵板底部拉片连接区域受剪压复合作用最为显著,最大应力达3.22MPa,且应力沿墙高逐渐衰减,整体位移呈梯度分布;模壳墙拼接缝底部为主要应力控制部位,其极值位移控制在9.07×10mm,远低于施工规范限值。结合仿真结果,研究提出了相应的构造改进与施工控制策略,且该策略已在实际工程中得到验证。
This study,based on the urban renewal project in the Boya District of Qiongshan,Haikou,establishes a threedimensional numerical model on a finite element analysis platform to investigate the mechanical behavior and deformation characteristics of prefabricated concrete modular shell systems(IRF system)during the construction phase,focusing on the sealing panels and the integral wall system.The model incorporates the effects of concrete self-weight,temperature gradients,heat of hydration,and nonlinearities in both material properties and contact interactions.Through thermal-mechanical coupling analysis,the study quantitatively evaluates stress concentration,displacement development,and influencing factors in critical regions of the wall.The results indicate that the bottom tie—plate connection zones of the sealing panels are subject to pronounced shear-compression interaction,with peak stress reaching 3.22 MPa,which gradually attenuates along the wall height.The displacement profile exhibits a gradient distribution,while the base of the modular joint seam emerges as the primary stress-governing region,with maximum displacement constrained to 9.07×10^(-3)mm,significantly below construction specification limits.Based on simulation outcomes,structural enhancements and construction control strategies are proposed and have been successfully validated in the actual project.
作者
杨宽
Yang Kuan(China Railway Construction Group Co.,Ltd.,Guangzhou 510800,China)
出处
《绿色建造与智能建筑》
2026年第1期92-94,119,共4页
Green Construction and Intelligent Building
关键词
装配式建筑
模壳墙
封堵板
热-力耦合
数值模拟
prefabricated building
modular shell wall
sealing panel
thermal-mechanical coupling
numerical simulation
