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).