作者：胡翔, 周谊东

作者单位：湖北省计量测试技术研究院, 湖北武汉, 430071

关键词：液压千斤顶; 压力表; 检定; 测量范围; 分辨力; 不确定度

摘要：

压力表作为液压千斤顶的关键性指示计量器具,其计量性能的优劣,直接影响到建设工程桩基承载力和工程结构预应力的力值测量结果的准确性。为解决这一问题,本文重点探讨了压力表测量范围、准确度等级、分辩力和配套检定等对液压千斤顶检定结果的影响,澄清了生产厂家和施工单位在液压千斤顶使用中的一些习惯误区,并在试验验证基础上给出了不确定度分析和合理化建议。

Analysis of pressure gauge influence to indication in verification of hydraulic ram

HU Xiang, ZHOU Yi-dong

Hubei Institute of Measurement and Testing Technology, Wuhan 430071, China

Abstract: Pressure gauge was used as a key indication measuring instrument of the hydraulic ram.Whether measuring performance was good or bad,it will inevitably affect the force measuring result accuracy of the building founding pile's load-bearing capacity and engineering structure preload.In order to solve this problem,this article discussed the influence of the measuring range,accuracy grade,resolution of pressure gauge in verification of hydraulic ram.It also pointed out some misusing methods of the hydraulic ram by production factory and construction unit.Finally the authors have come up with the uncertainty analysis and rationalization proposal on according to test and experiment.

Keywords: Hydraulic ram; Pressure gauge; Verification; Measuring range; Resolution; Uncertainty

2006, 6(32): 42-43,120  收稿日期: 2006-7-10;收到修改稿日期: 2006-9-5

基金项目: 

作者简介: 胡翔(1970-),男,高级工程师,工学硕士,主要从事力学计量工作。

参考文献

[1] 胡翔,等.JJG621-2005,液压千斤顶检定规程[S].北京:中国计量出版社,2005.
[2] 宣家荣,等.JJG52-1999,弹簧管式一般压力表、压力真空表和真空表检定规程[S].北京:中国计量出版社,1999.
[3] 宣家荣,等.JJG49-1999,弹簧管式精密压力表和真空表检定规程[S].北京:中国计量出版社,1999.
[4] 徐有邻,等.GB50204-2002,混凝土结构工程施工质量验收规范[S].北京:中国建筑工业出版社,2002.
[5] 李明顺,等.GB50010-2002,混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[6] 平复强.千斤顶标定误差分析及标定要点[J].铁道标准设计,1998,6:8-9.