钢筋残余变形测试仪
钢筋残余变形测试仪
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详情说明 / Details

  腾达试验仪器厂:


  一、钢筋残余变形测试仪产品简介:


  ■国家标准JGJ107-2010《钢筋机械连接技术规程》规定,通过圆柱套筒机械连接的两根钢筋,在单向拉伸试验中,接头的变形性能等级是一级时要求:残余变形u0≤0.10mm(钢筋直径d≤Φ32mm)和u0≤0.14mm(钢筋直径d>Φ32mm)。实际工作中测量到的残余变形一般在0.030mm至0.080mm之间。残余变形量很小。


  ■钢筋残余变形测试仪只有采用双侧引伸计测量得到的数据才是A准确的;


  ■双侧引伸计和钢筋之间只有采用弹性连接(例如:弹簧和皮筋套),这样测量得到的数据才是A可靠的。多次实验证明:采用机械式刚性连接虽然连接方便,但是测量的数据误差大,大于1%,重复性差,数据A靠,不能通过计量检定。


  First,the steel residual deformation tester product introduction:


  ■National Standard JGJ107-2010"Technical Regulations for Reinforcing Steel Connections"stipulates that two steel bars mechanically connected by a cylindrical sleeve,in the uniaxial tensile test,the deformation performance level of the joint is one level:residual deformation u0≤0.10 Mm(rebar diameter d≤Φ32mm)and u0≤0.14mm(rebar diameter d>Φ32mm).The residual deformation measured in actual work is generally between 0.030 mm and 0.080 mm.The amount of residual deformation is small.


  ■Rebar residual deformation tester is only accurate when the data measured by the double-sided extensometer is used;


  ■Only the elastic connection between the double-sided extensometer and the steel bar(for example,spring and rubber sleeve)is such that the measured data is A reliable.Many experiments have proved that although the mechanical rigid connection is convenient,the measured data error is large,more than 1%,the repeatability is poor,the data A depends,and the measurement cannot be passed.


  二、钢筋残余变形测试仪主要指标


  ■满足标准:JGJ107-2010《钢筋机械连接技术规程》(2010.10.01实施)


  ■标定仪器:GWB-200B高精度引伸计标定器(量程0~25mm,分辨率0.0002mm)钢铁研究总院制造


  ■测量钢筋直径(mm):φ5~φ40


  ■测量分辨值(mm):0.001


  ■精度等级:1级


  ■数显表显示含义:


  均值:表示PV1和PV2两路的平均值


  PV1:表示A路引伸计变形测量值


  PV2:表示第二路引伸计变形测量值


  Second,the main indicators of the residual deformation tester


  ■Meet the standard:JGJ107-2010"Technical Regulations for Reinforcing Steel Connections"(implementation of 2010.10.01)


  ■Calibration instrument:GWB-200B high precision extensometer calibrator(range 0~25mm,resolution 0.0002mm)Steel Research Institute manufacturing


  ■Measure the diameter of the steel bar(mm):φ5 toφ40


  ■Measurement resolution(mm):0.001


  ■Accuracy level:Level 1


  ■Digital display shows the meaning:


  Mean:Indicates the average of both PV1 and PV2


  PV1:indicates the deformation measurement value of the A path extensometer


  PV2:indicates the second extensometer deformation measurement value


  三、钢筋残余变形测试仪主要特点


  ■钢筋机械连接残余变形测试仪由两只高精度可变标距引伸计,灵敏度保持一致,组成双侧引伸计,直接测量试样的两侧平均变形量,测量结果准确;


  ■两只引伸计测量标距可调,范围50~260mm,量程5mm或10mm;


  ■四位三排两输入高精度数显表,电路部分采用24位A/D高精度IC芯片设计,实时显示两只引伸计的真实变形量,数值稳定可靠;


  ■数显表设置简单,带有密码锁设定功能,避免误操作改动设定值;


  ■双侧引伸计和钢筋之间采用弹性连接(例如:弹簧和皮筋套),试样夹持方便,使用寿命长;


  ■本仪器由专业人员根据实际情况精心设计,结构合理,非常适合于建筑质检部门检测使用。


  Third,the main characteristics of the steel residual deformation tester


  ■Reinforcement mechanical connection residual deformation tester consists of two high-precision variable gauge extensometers with the same sensitivity,forming a double-sided extensometer,directly measuring the average deformation of both sides of the sample,and the measurement results are accurate;


  ■Two extensometers can measure the gauge length,ranging from 50 to 260mm,with a range of 5mm or 10mm;


  ■Four-position three-row two-input high-precision digital display,the circuit part is designed with 24-bit A/D high-precision IC chip,real-time display of the true deformation of two extensometers,the value is stable and reliable;


  ■The digital display is easy to set up with the password lock setting function to avoid misuse and change the set value;


  ■The elastic connection between the double-sided extensometer and the steel bar(for example:spring and rubber sleeve),the sample is convenient to clamp and the service life is long;


  ■This instrument is designed by professionals according to the actual situation,and the structure is reasonable,which is very suitable for the inspection and use of the building quality inspection department.


  四、钢筋残余变形测试仪主要配置


  ■可变标距引伸计两只;


  ■高精度数显表一台;


  ■常用工具附件一套;


  ■使用说明书一份;


  ■仪器包装箱一个(340×230×110mm)。


  Fourth,the main configuration of the residual deformation tester


  ■Variable gauge length extensometer two;


  ■High-precision digital display


  ■A set of commonly used tools


  ■Instructions for use;one copy;


  ■Instrument packaging box One(340×230×110mm).