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隧道建设(中英文) ›› 2025, Vol. 45 ›› Issue (6): 1154-1162.DOI: 10.3973/j.issn.2096-4498.2025.06.010

• 研究与探索 • 上一篇    下一篇

螺栓连接预制板式拼装综合管廊整体结构受力性能分析

栗子浩1, 陈盛扬1, 严佳佳2, 薛伟辰1, *   

  1. 1. 同济大学土木工程学院, 上海 2000922. 中国电建集团华东勘测设计研究院有限公司, 浙江 杭州 310014
  • 出版日期:2025-06-20 发布日期:2025-06-20
  • 作者简介:栗子浩(1999—),男,广西贺州人,同济大学结构工程专业在读博士,研究方向为预制混凝土结构、FRP-混凝土组合结构。E-mail:2039773576@qq.com。*通信作者: 薛伟辰, E-mail: xuewc@tongji.edu.cn。

Mechanical Properties of Overall Structure of Bolted Connected Slab-Assembly Precast Utility Tunnels

LI Zihao1, CHEN Shengyang1, YAN Jiajia2, XUE Weichen1, *   

  1. (1. College of Civil Engineering, Tongji University, Shanghai 200092, China; 2. PowerChina Huadong Engineering Corporation Limited, Hangzhou 310014, Zhejiang, China)
  • Online:2025-06-20 Published:2025-06-20

摘要: 为研究腋角构造、侧壁轴压比等关键参数对螺栓预制板式拼装综合管廊整体结构受力性能的影响规律,基于ABAQUS软件,建立螺栓连接预制板式拼装综合管廊下部边节点的非线性有限元模型,并通过前期开展的螺栓连接预制板式拼装综合管廊下部边节点低周反复荷载试验,验证该模型的合理性。在此基础上,建立螺栓连接预制板式拼装综合管廊整体结构非线性有限元模型并开展有限元参数分析,主要参数包括腋角高度(无腋角、100 mm200 mm250 mm)和侧壁轴压比(00.050.1)。结果表明: 1)所建立的螺栓连接综合管廊整体结构模型均发生受弯破坏,正向极限承载力为210.5~306.8 kN,延性系数为3.57~4.01 2)与无腋角综合管廊相比,腋角高度为100200250 mm的综合管廊的极限承载力分别提高16.6%27.5%31.7%,延性系数分别降低3.24%3.51%9.46% 3)与侧壁轴压比为0的综合管廊相比,侧壁轴压比为0.050.1的综合管廊的极限承载力分别提高5.4%14.3%,延性系数分别提高12.32%10.36%

关键词: 综合管廊, 预制板式拼装, 螺栓连接, 整体结构, 有限元分析, 极限承载力, 位移延性

Abstract: The haunch height and sidewall compression ratio are key factors influencing the mechanical performance of bolted-connected slab-assembly precast utility tunnels. To investigate their effects, a nonlinear finite element (FE) model of the lower edge node is developed using ABAQUS software. The models accuracy is validated through low-cycle repeated load tests conducted on lower edge nodes in prior research. Based on this, a nonlinear FE model of the entire tunnel structure is constructed, and a parametric analysis is performed. The main parameters include haunch heights of 0, 100, 200, and 250 mm, and sidewall axial compression ratios of 0, 0.05, and 0.1. The results indicate the following: (1) The overall structure primarily undergoes bending failure, with forward ultimate bearing capacities ranging from 210.5 to 306.8 kN and ductility coefficients from 3.57 to 4.01. (2) Compared to the case with zero haunch height, the ultimate bearing capacities increase by 16.6%, 27.5%, and 31.7% for haunch heights of 100, 200, and 250 mm, respectively, while the ductility coefficients decrease by 3.24%, 3.51%, and 9.46%. (3) Compared to the case with a sidewall axial compression ratio of zero, the ultimate bearing capacities increase by 5.4% and 14.3% for compression ratios of 0.05 and 0.1, respectively, with corresponding increases in ductility coefficients of 12.32% and 10.36%.

Key words: utility tunnel, precast slab-assembly, bolted connection, overall structure, finite element analysis, ultimate bearing capacity, displacement ductility