预制管廊横向接头抗弯力学模型及取值方法

doi:10.12068/j.issn.1005-3026.2020.05.004

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (5): 629-634.DOI: 10.12068/j.issn.1005-3026.2020.05.004

预制管廊横向接头抗弯力学模型及取值方法

王鹏宇，朱承金，王述红，姚骞

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2019-06-25 修回日期:2019-06-25 出版日期:2020-05-15 发布日期:2020-05-15
通讯作者: 王鹏宇
作者简介:王鹏宇(1994-)，男，江苏泰州人，东北大学博士研究生；王述红(1969-)，男，江苏泰州人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51474050，U1602232)；中央高校基本科研业务费专项资金资助项目(N17010829)；辽宁省自然科学基金资助项目(20170540304，20170520341)；硅酸盐建筑材料国家重点实验室(武汉理工大学)开放基金资助项目(SYSJJ2017-08)；中建股份科技研发项目(CSCEC-2016-Z-20-8).

Bending Mechanical Model of Transverse Joints in Precast Prestressed Municipal Tunnel and Its Value Method

WANG Peng-yu， ZHU Cheng-jin， WANG Shu-hong， YAO Qian

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2019-06-25 Revised:2019-06-25 Online:2020-05-15 Published:2020-05-15
Contact: YAO Qian
About author:-
Supported by:
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摘要/Abstract

摘要： 接头导致预制预应力综合管廊结构刚度分布不均匀，内力以及变形发生变化，而抗弯刚度是衡量管廊接头性能的重要指标以及评价管廊结构整体力学性能的重要参数.在考虑横向接头截面实际构造形式以及受力变形特点的基础上，通过内力平衡和变形协调条件，建立了可以表征接头截面从受力到破坏各阶段的力学模型以及相应的理论解析表达式.通过数值模拟的方法对接头抗弯刚度影响因素进行了敏感性分析，并在此基础上将理论计算结果与数值模拟结果进行对比，最后根据得出的抗弯刚度变化规律提出了管廊横向接头抗弯刚度两阶段取值方法，研究结果可为预制管廊的设计和理论分析提供参考.

关键词: 预制预应力综合管廊, 横向接头, 高强螺栓, 抗弯力学模型

Abstract: Joints lead to uneven distribution of structural rigidity of the precast prestressed municipal tunnel(PPMT)， internal forces and deformation correspondingly change，and bending stiffness is an important indicator to evaluate the performance of PPMT joints and an important factor to evaluate the overall mechanical properties of PPMT structures. After considering the actual structural form of the transverse joint section and the characteristics of force deformation， the mechanical model that can characterize the joint section from force to failure and the corresponding analytical expressions were established through the internal force balance and deformation coordination conditions. The sensitivity analysis of the factors affecting the bending stiffness of joints was carried out through numerical simulations. Based on this， the theoretical calculation results were compared with the numerical simulations. Finally， according to the obtained law of bending stiffness change， two-stage bending stiffness method for transverse joints of PPMT was proposed. The results of the study can provide reference for the design and theoretical analysis of PPMT.

Key words: precast prestressed municipal tunnel(PPMT), transverse joint, high-strength bolts, bending mechanical model

中图分类号:

TU45

王鹏宇，朱承金，王述红，姚骞. 预制管廊横向接头抗弯力学模型及取值方法[J]. 东北大学学报:自然科学版, 2020, 41(5): 629-634.

WANG Peng-yu， ZHU Cheng-jin， WANG Shu-hong， YAO Qian. Bending Mechanical Model of Transverse Joints in Precast Prestressed Municipal Tunnel and Its Value Method[J]. Journal of Northeastern University Natural Science, 2020, 41(5): 629-634.

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预制管廊横向接头抗弯力学模型及取值方法

Bending Mechanical Model of Transverse Joints in Precast Prestressed Municipal Tunnel and Its Value Method

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