預(yù)應(yīng)力張拉伸長量計算書

1、、鋼絞線伸長量計算1. 計算依據(jù) 公路橋涵施工技術(shù)規(guī)范中公式（12.8.3-1）; 公路橋涵施工技術(shù)規(guī)范中附錄G-8預(yù)應(yīng)力筋平均張拉力的計算； 海濱大道北段二期（疏港三線立交蟶頭沽）設(shè)計圖紙。2計算公式：PpLApEp(12.8.3-1)PpP(1e(kx)kx(附錄G-8)conAp其中：x從張拉端至計算截面的孔道長度（m）,取張拉端到跨中孔道長度;連續(xù)端非連續(xù)端N1N117.325N2N217.315N3N317.300N4N417.300N5N517.275從張拉端至計算截面曲線孔道部分切線的夾角之和（rad）,取o即k孔道每米局部偏差對摩擦的影響系數(shù)，本工程采用塑料波紋管，取;s預(yù)應(yīng)力

2、筋與孔道壁的摩擦系數(shù)，本工程采用15.2mm高強低松弛鋼絞線及塑料波紋管孔道，根據(jù)圖紙??；P預(yù)應(yīng)力筋張拉端的張拉力（N）;Ap預(yù)應(yīng)力筋的截面面積（mm）;con張拉控制應(yīng)力（MPa,根據(jù)圖紙取0.73fpk；Pp預(yù)應(yīng)力筋平均張拉力（N）;L預(yù)應(yīng)力筋的長度（mr）,取張拉端到跨中鋼絞線長度;中跨邊跨N117165N117325N217205N217315N317240N317300N417270N417300N517305N517275Ep鋼絞線彈性模量，本工程采用s15.2mm高強低松弛鋼絞線，根據(jù)試驗取51.9110MPa（鋼絞線彈性模量檢測報告附后）L理論伸長值（mr）3伸長值計算 連續(xù)端

3、N1conAp0.73fpkApkAp0.7318601404760368NPpP(1e(kxkx)(0.001517.1650.170.148353)760368(1e()0.001517.1650.170.148353741316.02NPpLApEp741316。217165119.0mm14041.91105連續(xù)端N2conAp°.73fpkApkAp0.7318601404760368NPpP(1e(kxkx)(0.001517.2050.170.148353)、丿)760368(1e)0.1483530.001517.2050.17741293.97NPpLApEpPpc

4、onAp0.73fpkAp0.7318601404760368NP(1e(kx)760368(1e(0.001517.24kx0.170.148353)741274.68N7412939717205119.2mm14041.91105連續(xù)端N3PpLApEp7412746817240119.5mm14041.91105連續(xù)端N4conAp0.73fpkApkAp0.7318601404760368NPp(kx)(0.001517.270.170.148353)P(1e(丿)760368(1e(3kx)0.001517.270.170.148353741258.14NPpLApEp741258&

5、quot;仃鎮(zhèn)119.7mm14041.91105連續(xù)端N5conAp0.73fpkApkAp0.7318601404760368NPpP(1e(kx)760368(1ekx(0.001517.3050.170.148353)0.001517.3050.170.148353741238.85NPpLApEp7412388517305119.9mm14041.91105非連續(xù)端N1Aconp0.73fpkAp0.7318601404760368NPpP(1ekx(kx)(0.001517.3250.170.148353)760368(1e()0.001517.3250.170.148353741

6、227.83NPpLApEp74122783I：?5120.1mm14041.91105非連續(xù)端N2Aconp0.73fpkAp0.7318601404760368NPpP(1ekx(kx)(0.001517.3150.170.148353)、(丿)760368(1e(丿)0.1483530.001517.3150.17741233.34NApEp7412333417315120.0mm14041.91105非連續(xù)端N3conAp0.73fpkAp0.7318601404760368NPp0.170.148353)0.001517.30.170.148353P(1e(kx)760368(1e(

7、0.001517.3kx741241.61NPpLApEp741241.611730014041.91105119.9mmN4119.7119.9239.6mmN5119.9119.7239.6mm非連續(xù)端N4PconAp0.73fpkAp0.7318601405950460NPp926552.01NP(1e(kx)950460(1e0015173148353)kx0.001517.30.170.148353PpLApEp926552011730014051.91105119.9mm非連續(xù)端N5PconAp0.73fpkAp0.7318601405950460NPp(kx)(0.001517.

8、2750.170.148353)、P(1e丿)950460(1e(丿)kx0.001517.2750.170.148353926569.24NPpL926569.241727514051.91105119.7mm由以上計算結(jié)果得出：中跨箱梁理論伸長值如下N1119.02238.0mmN2119.22238.4mmN3119.52239.0mmN4119.72239.4mmN5119.92239.8mm邊跨箱梁理論伸長值如下N1119.0120.1239.1mmN2119.2120.0239.2mmN3119.5119.9239.4mm、壓力表讀數(shù)計算1. 計算依據(jù) 海濱大道北段二期（疏港三線立

9、交蟶頭沽）設(shè)計圖紙； 千斤頂標(biāo)定報告09-JZ163178；（報告附后）2. 計算公式千斤頂力與壓力表讀數(shù)對應(yīng)關(guān)系如下式：yaxb其中：y千斤頂力（KN;x壓力表讀數(shù)（MPa；a,b常系數(shù)。力與應(yīng)力關(guān)系如下式：Aconp各項代表意義同伸長值計算。3. 油表讀數(shù)計算1#油泵，千斤頂編號090201,壓力表編號1269;由上圖可知：y19.19x6.4689，則壓力表讀數(shù)計算如下:4束鋼絞線:0.7318601404760368N760.368KN15%空制應(yīng)力時:y0.15P0.15760.368114.06KN89114-066.46895.6Mpa19.1919.19y0.3P0.3760.

10、368228.11KNx30%空制應(yīng)力時:連228.116.4689n.5Mpa19.1919.19100%空制應(yīng)力時:yP760.368KNy6.4689760.3686.4689門x39.3Mpa19.1919.195束鋼絞線：P0.7318601405950460N950.46KN15%空制應(yīng)力時：y0.15P0.15950.46142.57KNy6.4689142.576.4689x7.1Mpa19.1919.1930%空制應(yīng)力時：y0.3P0.3950.46285.14KNy6.4689285.146.4689一廠一x14.5Mpa19.1919.19100%空制應(yīng)力時:yP950.

11、46KNy6.4689950.466.4689x49.2Mpa19.1919.192#油泵，千斤頂編號090202,壓力表編號9023;由上圖可知：y19.065X2.2376，則壓力表讀數(shù)計算如下:15%空制應(yīng)力時:y0.15P0.15760.368114.06KNy2.2376114°62.23765.9Mpa19.06519.06530%空制應(yīng)力時:y0.3Py2.2376x19.065100%空制應(yīng)力時：yy2.2376x19.0655束鋼絞線：P0.73186015%空制應(yīng)力時：y0.15Py2.2376x19.06530%空制應(yīng)力時：0.3760.368228.11KN2

12、28.112.237611.8Mpa19.065P760.368KN760.3682.237639.8Mpa19.0651405950460N950.46KN0.15950.46142.57KN142.572.23767.4Mpa19.065y0.3P0.3950.46285.14KNx100%空制應(yīng)力時：y2.237619.065285.142.237619.06514.8MpayP950.46KN95°.462237649.7Mpa19.06519.065 3#油泵，千斤頂編號090302,壓力表編號1259;由上圖可知：y19.193x1.3431，則壓力表讀數(shù)計算如下:4束鋼

13、絞線:P0.7318601404760368N760.368KN15%空制應(yīng)力時:30%空制應(yīng)力時:y0.15P0.15760.368114.06KN19.193y1.3431114°61.34315.9Mpa19.193y1.343119.193228.111.343119.19311.8Mpa100%空制應(yīng)力時:P760.368KN5束鋼絞線:15%空制應(yīng)力時:30%空制應(yīng)力時:y1.343119.1930.7318600.15P760.3681.343119.1931405950460N39.5Mpa950.46KN0.15950.46142.57KN1.3431142.571

14、.3431y19.19319.1937.4Mpay0.3P0.3950.46285.14KNy1.343119.193285"41.343114.8Mpa19.193y0.3P0.3760.368228.11KN100%空制應(yīng)力時:P950.46KN950.461.343149.5Mpa19.193口y1.343119.1934#油泵，千斤頂編號090303,壓力表編號8823；由上圖可知：y19.047x2.1925，則壓力表讀數(shù)計算如下:15%空制應(yīng)力時:y0.15P0.15760.368114.06KN19.047-2.1925114.062.19255.9Mpa30%空制應(yīng)力

15、時:y0.3P0.3760.368228.11KNy21925228.112192511.9Mpa19.04719.047100%空制應(yīng)力時:P760.368KNy2.192519.04776°.3682192539.8Mpa19.0475束鋼絞線:P0.7318601405950460N950.46KN15%空制應(yīng)力時:y0.15P0.15950.46142.57KN19.047x19.0475142.5721925了叫19.04730%空制應(yīng)力時:y2.192519.047y0.3P0.3950.46285.14KN285142192514.9Mpa19.047100%空制應(yīng)力時

16、:P950.46KNy2.192519.047950462"92549.8Mpa19.0475#油泵，千斤頂編號090304,壓力表編號1199;由上圖可知：y19.071x0.6931，則壓力表讀數(shù)計算如下:4束鋼絞線：0.73I8601404760368N760.368KN15%空制應(yīng)力時:y0.15P0.15760.368114.06KN19.071431114.°6°69316.0Mpa19.07130%空制應(yīng)力時:y0.3P0.3760.368228.11KNy0.693119.071228.110.693119.07112.0Mpax19.071100

17、%空制應(yīng)力時:100%空制應(yīng)力時:P760.368KNy0.693119.071760.3680.693119.07139.9Mpa5束鋼絞線:0.7318601405950460N950.46KN15%空制應(yīng)力時:0.15P0.15950.46142.57KN0.6931142.570.6931y19.07119.0717.5Mpa30%空制應(yīng)力時:y0.3P0.3950.46285.14KNy0.693128514°693115.0Mpa19.0716#油泵，千斤頂編號yP950.46KNy0.6931950.460.693119.07119.07149.9Mpa090305,壓

18、力表編號9523;由上圖可知：y19.311X1.4319，則壓力表讀數(shù)計算如下：4束鋼絞線：P0.7318601404760368N760.368KN15%空制應(yīng)力時：y0.15P0.15760.368114.06KNy1.4319114.061.4319x5.8Mpa19.31119.31130%空制應(yīng)力時：y0.3P0.3760.368228.11KNy1.4319228.111.4319x11.7Mpa19.31119.311100%空制應(yīng)力時:yP760.368KNy1.4319760.3681.4319x39.3Mpa19.31119.3115束鋼絞線：P0.73186014059

19、50460N950.46KN15%空制應(yīng)力時：y0.15P0.15950.46142.57KNy1.4319142.571.4319x7.3Mpa19.31119.31130%空制應(yīng)力時：y0.3P0.3950.46285.14KNy1.4319285.141.4319x14.7Mpa19.31119.311yP950.46KNy1.4319950.461.4319門x49.1Mpa19.31119.3117#油泵，千斤頂編號090306,壓力表編號1089；由上圖可知：y19.351X3.5574，則壓力表讀數(shù)計算如下:4束鋼絞線:0.7318601404760368N760.368KN15

20、%空制應(yīng)力時:y0.15P0.15760.368114.06KN19.351y3557411406彳55745.7Mpa19.35130%空制應(yīng)力時:y0.3P0.3760.368228.11KNy3.557419.351228.113.557419.35111.6Mpay3.557x100%空制應(yīng)力時:100%空制應(yīng)力時:P760.368KNy3.557419.351760.3683.557419.35139.1Mpa5束鋼絞線:0.7318601405950460N950.46KN15%空制應(yīng)力時:0.15P0.15950.46142.57KN3.5574142573.5574y19.35119.3517.2Mpa30%空制應(yīng)力時:y0.3P0.3950.46285.14KN19.351285J43557414.6Mpa19.351yP950.46KN彳557495。46冊448.9Mpa19.35119.3518#油泵，千斤頂編號090309,壓力表編號3