一、鋼筋殘余變形測(cè)試儀產(chǎn)品簡(jiǎn)介：
■國(guó)家標(biāo)準(zhǔn)JGJ107-2010《鋼筋機(jī)械連接技術(shù)規(guī)程》規(guī)定，通過(guò)圓柱套筒機(jī)械連接的兩根鋼筋，在單向拉伸試驗(yàn)中，接頭的變形性能等級(jí)是一級(jí)時(shí)要求：殘余變形u0≤0.10mm（鋼筋直徑d≤Φ32mm）和u0≤0.14mm（鋼筋直徑d＞Φ32mm）。實(shí)際工作中測(cè)量到的殘余變形一般在0.030mm至0.080mm之間。殘余變形量很小。
■鋼筋殘余變形測(cè)試儀只有采用雙側(cè)引伸計(jì)測(cè)量得到的數(shù)據(jù)才是A準(zhǔn)確的；
■雙側(cè)引伸計(jì)和鋼筋之間只有采用彈性連接（例如：彈簧和皮筋套），這樣測(cè)量得到的數(shù)據(jù)才是A可靠的。多次實(shí)驗(yàn)證明：采用機(jī)械式剛性連接雖然連接方便，但是測(cè)量的數(shù)據(jù)誤差大，大于1%，重復(fù)性差，數(shù)據(jù)A靠，不能通過(guò)計(jì)量檢定。
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、鋼筋殘余變形測(cè)試儀主要指標(biāo)
■滿足標(biāo)準(zhǔn)：JGJ107-2010《鋼筋機(jī)械連接技術(shù)規(guī)程》（2010.10.01實(shí)施）
■標(biāo)定儀器：GWB-200B高精度引伸計(jì)標(biāo)定器（量程0～25mm，分辨率0.0002mm） 鋼鐵研究總院制造
■測(cè)量鋼筋直徑（mm）：φ5～φ40
■測(cè)量分辨值（mm）：0.001
■精度等級(jí)：1級(jí)
■數(shù)顯表顯示含義：
均值：表示PV1和PV2兩路的平均值
PV1 ：表示A路引伸計(jì)變形測(cè)量值
PV2 ：表示第二路引伸計(jì)變形測(cè)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 to φ40
■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、鋼筋殘余變形測(cè)試儀主要特點(diǎn)
■鋼筋機(jī)械連接殘余變形測(cè)試儀由兩只高精度可變標(biāo)距引伸計(jì)，靈敏度保持一致，組成雙側(cè)引伸計(jì)，直接測(cè)量試樣的兩側(cè)平均變形量，測(cè)量結(jié)果準(zhǔn)確；
■兩只引伸計(jì)測(cè)量標(biāo)距可調(diào)，范圍50～260mm，量程5mm或10mm；
■四位三排兩輸入高精度數(shù)顯表，電路部分采用24位A/D高精度IC芯片設(shè)計(jì)，實(shí)時(shí)顯示兩只引伸計(jì)的真實(shí)變形量，數(shù)值穩(wěn)定可靠；
■數(shù)顯表設(shè)置簡(jiǎn)單，帶有密碼鎖設(shè)定功能，避免誤操作改動(dòng)設(shè)定值；
■雙側(cè)引伸計(jì)和鋼筋之間采用彈性連接（例如：彈簧和皮筋套），試樣夾持方便，使用壽命長(zhǎng)；
■本儀器由專業(yè)人員根據(jù)實(shí)際情況精心設(shè)計(jì)，結(jié)構(gòu)合理，非常適合于建筑質(zhì)檢部門檢測(cè)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、鋼筋殘余變形測(cè)試儀主要配置
■可變標(biāo)距引伸計(jì) 兩只；
■高精度數(shù)顯表 一臺(tái)；
■常用工具附件 一套；
■使用說(shuō)明書(shū) 一份；
■儀器包裝箱 一個(gè)（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).
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