摘要
为探究独塔斜拉桥在高水位时,施工钢栈桥+钻孔平台进行桩基施工的施工关键技术和受力性能,以某P–K钢箱梁独塔斜拉桥为工程背景,结合桥址特点,对施工钢栈桥+钻孔平台进行了方案设计,并对钢栈桥+钻孔平台施工过程中的关键技术进行了详细研究,基于有限元模型,分别探究了最不利荷载组合下钢栈桥+钻孔平台受力性能。研究表明:施工钢栈桥+在各种施工荷载最不利组合下的强度、刚度和稳定性满足要求,其中钻孔平台最大应力、挠度和屈曲临界荷载系数分别为200 MPa、0.5 mm和41.4,施工钢栈桥最大应力、挠度和屈曲临界荷载系数分别为258 MPa、2 mm和10.5。
In order to explore the key construction techniques and stress performance of pile foundation construction for a single tower cable-stayed bridge with a steel wharf and drilling platform at high water levels,a P-K steel box girder single tower cable-stayed bridge was taken as the engineering background.Based on the characteristics of the bridge site,a scheme design for the construction of the steel wharf and drilling platform was first carried out.Secondly,the key construction techniques during the construction process of the steel wharf and drilling platform were studied in detail.Finally,based on a finite element model,the stress performance of the steel wharf and drilling platform under the most unfavorable load combination was explored.Research has shown that the strength,stiffness,and stability of the construction steel wharf+under various unfavorable combinations of construction loads meet the requirements.The maximum stress,deflection,and buckling critical load coefficients of the drilling platform are 200 MPa,0.5 mm,and 41.4,respectively.The maximum stress,deflection,and buckling critical load coefficients of the construction steel wharf are 258 MPa,2 mm,and 10.5,respectively.
作者
杨军
陈云锋
关轶文
张显跃
谢晓东
YANG Jun;CHEN Yun-feng;GUAN Yi-wen;ZHANG Xian-yue;XIE Xiao-dong(The First Engineering Company Ltd.,of CCCC Third Highway Engineering Co.,Ltd.,100012,Beijing,China)
出处
《建筑技术》
2025年第16期1962-1967,共6页
Architecture Technology
关键词
独塔斜拉桥
栈桥
钻孔平台
受力性能
tower cable-stayed bridge
pier bridge
drilling platform
stress performance
