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In order to monitor the thermal expansion, dynamic effects and vibration of pipelines during thermal function tests in nuclear power plants, displacement sensors need to be installed on high-energy pipes and equipment. The sensor bracket is the most critical structure and bearing unit of the monitoring system, and the feasibility study has always been a hot issue. The temporary support designed and made of C-shaped steel (that is, the domestic alternative product of the famous American pipeline system support brand unistrut steel) is not only structurally firm, but also the support rooting method will not damage the infrastructure of the plant. The mechanical characteristics and functional principles of the temporary support are studied by theoretical analysis and numerical simulation, and the maximum deflection of the support rod under the tensile (compressive) working load and the failure conditions of the support are analyzed. The critical condition and the limit value of the bearing capacity of the temporary support reaching the steady state are obtained, and the above theory combined with numerical simulation is applied to engineering practice.
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核电站热态功能试验期间,为了能够监测管道热膨胀、动态效应及振动,需要在高能管道及设备上安装位移传感器。传感器支架是监测系统最为关键的结构和承载单元,其可行性研究一直是热点问题。用C型钢(即美国著名管道系统支撑品牌unistrut型钢的国内替代产品)设计制作的临时支撑,不仅结构牢固,而且支撑生根方式不会破坏厂房的基础结构。采用理论分析、数值模拟的方法研究临时支撑的力学特性和功能原理,分析支撑杆在受拉(压)工作载荷下产生的最大挠度和支撑的失效条件。得到了临时支撑达到稳定状态的临界条件和支撑承载能力极限值,并将上述理论结合数值模拟应用于工程实践。
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, authorsList=章济)}, authors=[Author(id=1207748668782911831, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=zhangji@snpsc.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1207748668908740966, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, authorId=1207748668782911831, language=EN, stringName=Ji ZHANG, firstName=Ji, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=State Nuclear Power Plant Severice Company, Shanghai 200233, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1207748669021987183, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, authorId=1207748668782911831, language=CN, stringName=章济, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=国核电站运行服务技术有限公司,上海 200233, bio={"content":"
章济(1988—),男,高级工程师。E-mail:zhangji@snpsc.com
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章济(1988—),男,高级工程师。E-mail:zhangji@snpsc.com
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机械设计[M]. 北京:高等教育出版社,
2011:41., articleTitle=null, refAbstract=null), Reference(id=1207748673400840817, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, doi=null, pmid=null, pmcid=null, year=2003, volume=null, issue=null, pageStart=166, pageEnd=null, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=唐永进, journalName=压力管道应力分析, refType=null, unstructuredReference=唐永进.
压力管道应力分析[M]. 北京:中国石化出版社,
2003:166., articleTitle=null, refAbstract=null), Reference(id=1207748673497309818, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, doi=null, pmid=null, pmcid=null, year=1997, volume=null, issue=null, pageStart=34, pageEnd=null, url=null, language=null, rfNumber=[3], rfOrder=2, authorNames=郑文纬, 吴克坚, journalName=机械原理, refType=null, unstructuredReference=郑文纬,吴克坚.
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1997:34., articleTitle=null, refAbstract=null), Reference(id=1207748673585390209, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, doi=null, pmid=null, pmcid=null, year=2007, volume=null, issue=null, pageStart=22, pageEnd=null, url=null, language=null, rfNumber=[4], rfOrder=3, authorNames=李学志, journalName=计算机辅助设计与绘图, refType=null, unstructuredReference=李学志.
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2007:22., articleTitle=null, refAbstract=null), Reference(id=1207748673690247817, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, doi=null, pmid=null, pmcid=null, year=2009, volume=null, issue=6, pageStart=10, pageEnd=14, url=null, language=null, rfNumber=[5], rfOrder=4, authorNames=卢章平, 张艳, journalName=机械设计与研究, refType=null, unstructuredReference=卢章平,张艳. 不同有限元分析网格的转换[J].
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2009(6):10-14., articleTitle=不同有限元分析网格的转换, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1207748668648694092, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, xref=null, ext=[AuthorCompanyExt(id=1207748668657082703, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, companyId=1207748668648694092, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=State Nuclear Power Plant Severice Company, Shanghai 200233, China), AuthorCompanyExt(id=1207748668665471312, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, companyId=1207748668648694092, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=国核电站运行服务技术有限公司,上海 200233)])], figs=[ArticleFig(id=1207748670498382302, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, language=EN, label=Fig.1, caption=
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误差与伸长量的百分比, figureFileSmall=DyeQhe2pDWsd06WgfOJtrg==, figureFileBig=l8Zrt8xTLy+dYnmiV9r/dQ==, tableContent=null), ArticleFig(id=1207748671471460912, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, language=EN, label=Fig.5, caption=
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| C型钢规格:S2535H,材质:SS400(代替unistrut P3000HG) |
|---|
| 计算项目 | 计算内容 | 计算结果 |
|---|
| 截面的宽度、高度、截面面积 | b=41.27 mm,h=3.5 mm,As=322.58 mm2 | |
| 最小截面惯性矩、最小抗弯矩 | Is=49 947.77 mm4,Ws=2 621.93 mm3 | |
| 截面自重(均布载荷q) | q=2 kg/m | |
| 假设悬臂梁最大允许长度 | Ls=1.5 m | |
| 传感器自重 | Wm=0.909 kg×9.8 | 8.91 N |
| 钢丝绳的张力 | T=3.5 N±20% | T=4 N |
| 剪力Fs | Fs=W+T=8.91+4 | Fs=12.91 N |
| 总重(生根梁、支撑臂) | Wtotal=2 q•Ls+ Fs | Wtotal=43.24 N |
| 3 048 mm简支梁允许载荷① | L=1.2 kN | |
| 比较总重和允许载荷 | 43.24 N<1.2 kN | Wtotal < L |
| 结论:CHUANGBUILD S2535H是可以接受的。 |
| 拉线的最大张力载荷 | F=T=4 N | |
| 钢的弹性模量(查资料)Elastic Modulus | | Es=2.06×105 MPa |
| 支架最大挠度② |  | Wmax=-0.46 mm |
| 结论:最大挠度满足小于1.587 5 mm的要求 |
), ArticleFig(id=1207748672977216082, tenantId=1146029695717560320, journalId=1205116883411038211, articleId=1207658080398054126, language=CN, label=表1, caption=
计算结果汇总表
, figureFileSmall=null, figureFileBig=null, tableContent=
| C型钢规格:S2535H,材质:SS400(代替unistrut P3000HG) |
|---|
| 计算项目 | 计算内容 | 计算结果 |
|---|
| 截面的宽度、高度、截面面积 | b=41.27 mm,h=3.5 mm,As=322.58 mm2 | |
| 最小截面惯性矩、最小抗弯矩 | Is=49 947.77 mm4,Ws=2 621.93 mm3 | |
| 截面自重(均布载荷q) | q=2 kg/m | |
| 假设悬臂梁最大允许长度 | Ls=1.5 m | |
| 传感器自重 | Wm=0.909 kg×9.8 | 8.91 N |
| 钢丝绳的张力 | T=3.5 N±20% | T=4 N |
| 剪力Fs | Fs=W+T=8.91+4 | Fs=12.91 N |
| 总重(生根梁、支撑臂) | Wtotal=2 q•Ls+ Fs | Wtotal=43.24 N |
| 3 048 mm简支梁允许载荷① | L=1.2 kN | |
| 比较总重和允许载荷 | 43.24 N<1.2 kN | Wtotal < L |
| 结论:CHUANGBUILD S2535H是可以接受的。 |
| 拉线的最大张力载荷 | F=T=4 N | |
| 钢的弹性模量(查资料)Elastic Modulus | | Es=2.06×105 MPa |
| 支架最大挠度② |  | Wmax=-0.46 mm |
| 结论:最大挠度满足小于1.587 5 mm的要求 |
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