| 李 涵,黄志福,刘百来,王志宏,吴 清.圆管形波纹钢结构涵洞变形指标分析[J].安徽建筑大学学报,2022,30(): |
| 圆管形波纹钢结构涵洞变形指标分析 |
| Deformation index analysis of culvert with circular tubular corrugated steel structure |
| 投稿时间：2021-09-04 修订日期：2021-10-20 |
| DOI： |
| 中文关键词: 涵洞 波纹钢结构 变形指标 质量检验评定 |
| 英文关键词: culvert Corrugated steel construction the deformation index Inspection and Evaluation Quality Standards |
| 基金项目:波纹钢结构涵洞工程质量检验评定标准制修订(中国建设标准化协会2017年团体标准第一批计划) |
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| 中文摘要: |
| 鉴于波纹钢的柔性特点，该结构涵洞实施中要实时检测调整波纹结构断面变形，然而国内外各标准规范对波纹钢结构断面变形指标的技术要求不尽相同。为获取波纹钢变形控制研究方法和合理指标给定，采用ABAQUS有限元软件，通过控制波形与管径、覆土厚度等变量来进行受力变形数值仿真分析。得出结论如下：相同波形相同孔径，壁厚增加，抗变形能力增强；相同波形相同壁厚，管径增大，抗变形能力减弱；区别于现有的模拟数据趋势，当水平变形和竖向变形与椭圆度的单调线性趋势改变时，呈现出椭圆度增大，竖向椭圆态增加，最大等效应力不减反增的规律，同时，相当安全系数的范围缩小；当安装误差控制在（±1%D）以内，回填后在荷载作用下波纹钢管体更趋近于圆形，有利于荷载均布，形成土拱效应。 |
| 英文摘要: |
| In view of the flexible characteristics of corrugated steel, it is necessary to detect and adjust the deformation of corrugated steel section in real time during the culvert implementation. However, the technical requirements for the deformation index of corrugated steel section are different in various domestic and foreign standards. In order to obtain the research method of corrugated steel deformation control and set reasonable indexes, the ABAQUS finite element software is used to conduct numerical simulation analysis of stress deformation by controlling waveform and pipe diameter, soil thickness and other variables. The conclusions are as follows: with the same waveform and aperture, the wall thickness increases and the anti-deformation ability increases; With the same wave and wall thickness, the pipe diameter increases and the anti-deformation ability decreases. Different from the existing simulation data trend, when the horizontal and vertical deformation and the monotonic linear trend of the ellipticity change, the ellipticity increases, the vertical ellipticity increases, the maximum equivalent stress does not decrease but increases, at the same time, the range of equivalent safety factor decreases. When the installation error is controlled within (±1%D), the corrugated steel pipe body tends to be more circular under load after backfilling, which is conducive to uniform distribution of load and the formation of soil arch effect. |
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