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[1]吴奇峰,汪磊,孙鹏飞,等.加载条件下多尺寸原水管道受力特征模型试验[J].中国安全生产科学技术,2019,15(10):57-62.[doi:10.11731/j.issn.1673-193x.2019.10.009]
　WU Qifeng,WANG Lei,SUN Pengfei,et al.Modeling tests on mechanics characteristics of multisize raw water pipeline under loading condition[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(10):57-62.[doi:10.11731/j.issn.1673-193x.2019.10.009]
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加载条件下多尺寸原水管道受力特征模型试验
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年10期
页码:
57-62
栏目:
职业安全卫生管理与技术
出版日期:
2019-10-31

文章信息/Info

Title:
Modeling tests on mechanics characteristics of multisize raw water pipeline under loading condition
文章编号:
1673-193X(2019)-10-0057-06
作者:
吴奇峰; 汪磊; 孙鹏飞; 周骏; 施亮
（1.上海工程技术大学 城市轨道交通学院，上海 201620；
2.上海城投原水有限公司，上海 200127 ）
Author(s):
WU Qifeng;  WANG Lei;  SUN Pengfei;  ZHOU Jun;  SHI Liang
(1.School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620,China;
2.Shanghai SMI Raw Water Co.,Ltd.,Shanghai 200127,China)
关键词:
原水管线; 模型试验; 堆载作用; 多尺寸; 受力特征
Keywords:
raw water pipeline;  modeling test;  surcharge load effect;  multisize;  mechanics characteristics
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2019.10.009
文献标志码:
A
摘要:
为解决在施工过程中管线附近超载导致的爆管问题，分析堆载对不同管径原水管线受力变形的影响，基于模型试验研究管道的受力变形特征，并通过数值模拟计算对试验结果进行论证。结果表明：有限元计算结果与试验结果较吻合，管底整体应力值大于管腰处；在相同荷载作用下，随着管道直径的不断增大，管道所受的应力值越来越小；当荷载距离管轴线较远时，管道整体应力值变小；对比发现，随着加载值逐渐增大、管径逐渐变小，管体轴向应力值逐渐增大，且应力值增长速度较快。这主要是因为小管径的管道长细比较大，在土体中受约束较强，其所受到的应力值较大，容易产生破坏，实际施工时需要注意此类问题。
Abstract:
In order to solve the problem of pipe burst caused by the overload near the pipeline during the construction process,and analyze the influence of surcharge load on the forcedeformation of raw water pipelines with different diameters,the forcedeformation characteristics of pipeline were studied based on the modeling tests,and the testing results were demonstrated by the numerical simulation.The results showed that the finite element calculation results were in good agreement with the testing results,and the overall stress value at the bottom of pipeline was larger than that at the waist of pipeline.Under the same load,the stress of pipeline decreased with the increase of pipeline diameter.When the load was far from the axis of pipeline,the overall stress value of pipeline decreased.The comparison showed that as the loading value increased gradually and the pipeline diameter decreased gradually,the axial stress value of pipeline increased gradually,and the increase speed of stress value was faster.This was mainly because the slenderness ratio of pipeline with small diameter was relatively large,and the pipeline was strongly restrained in the soil body,so its bearing stress was relatively large,and the failure was easy to occur,so this type of problems should be paid attention during the actual construction.

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备注/Memo

备注/Memo:
收稿日期： 2019-08-19
* 基金项目： 国家自然科学基金项目(41630633,41807232，U1834201)；中国博士后基金项目(2018M640389)；研究生科研创新项目（0240-E3-0903-19-01200）
作者简介： 吴奇峰，硕士研究生，主要研究方向为岩土工程。
通信作者： 汪磊，博士，副教授，主要研究方向为岩土工程。
更新日期/Last Update: 2019-11-05