预应力张拉伸长量计算书文档格式.docx
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预应力张拉伸长量计算书文档格式.docx
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L—预应力筋的长度(mm),取张拉端到跨中钢绞线长度;
中跨
边跨
17165
17325
17205
17315
17240
17300
17270
17305
17275
Ep—钢绞线弹性模量,本工程采用s15.2mm高强低松弛钢绞线,根据试验取
1.91105MPa;
(钢绞线弹性模量检测报告附后)L—理论伸长值(mm)。
3.伸长值计算
1连续端N1
PconAp0.73fpkAp0.7318601404760368N
741316.0217165
14041.91105
2连续端N2
3连续端N3
PP
P(1e(kx))760368(1e(0.001517.240.170.148353))0.148353
kx
0.001517.240.17
741274.68N
LAPppELp
741274.68172450119.5mm
④连续端N4
conAp0.73fpkA
pkAp0.7318601404
760368N
0.170.148353))
0.001517.270.170.148353
P(1e(kx))760368(1e(0.001517.27kx
741258.14N
PpL
ApEp
741258.1417270
14041.91105119.7mm
⑤连续端N5
conAp0.73fpkAp0.7318601404760368N
P(1e(kx))760368(1ekx
(0.001517.3050.170.148353))
0.001517.3050.170.148353
741238.85N
ApEp
741238.85173055119.9mm
⑥非连续端
0.73fpkAp0.7318601404760368N
P(1e(kx))760368(1e(0.001517.3250.170.148353)
)
0.001517.3250.170.148353
741227.83N
741227.83173255120.1mm
⑦非连续端
conAp
P(1e
(kx)(0.001517.3150.170.148353)
(kx))760368(1e(0.001517.3150.170.148353)
0.001517.3150.170.148353
741233.34N
741233.34173155120.0mm
⑧非连续端N3
P(1e(kx))kx
760368(1
(0.001517.30.170.148353)
e)
0.001517.30.170.148353
741241.61N
741241.6117300
5
119.9mm
⑨非连续端N4
PconAp0.73fpkAp0.7318601405950460N
(kx)(0.001517.30.170.148353)
P(1e(kx))950460(1e(0.001517.30.170.148353))
kx0.001517.30.170.148353
926552.01N
926552.0117300
14051.91105
⑩非连续端N5
950460(1
(0.001517.2750.170.148353)
0.001517.2750.170.148353
926569.2417275
119.7mm
926569.24N
由以上计算结果得出:
①中跨箱梁理论伸长值如下N1119.02238.0mmN2119.22238.4mmN3119.52239.0mmN4119.72239.4mmN5119.92239.8mm②边跨箱梁理论伸长值如下
N1119.0120.1239.1mm
N2119.2120.0239.2mm
N3119.5119.9239.4mm
N4119.7119.9239.6mm
N5119.9119.7239.6mm
、压力表读数计算
1.计算依据
①《海滨大道北段二期(疏港三线立交~蛏头沽)设计图纸》;
②《千斤顶标定报告09-JZ163~178》;
(报告附后)
2.计算公式
①千斤顶力与压力表读数对应关系如下式:
yaxb
y—千斤顶力(KN);
x—压力表读数(MPa);
a,b—常系数。
3
力与应力关系如下式:
各项代表意义同伸长值计算。
3.油表读数计算
①1#油泵,千斤顶编号090201,压力表编号1269;
由上图可知:
y19.19x6.4689,则压力表读数计算如下:
4束钢绞线:
P0.7318601404760368N760.368KN
15%控制应力时:
y0.15P0.15760.368114.06KN
30%控制应力时:
100%控制应力时:
5束钢绞线:
y0.3P0.3760.368228.11KN
P760.368KN
P950.46KN
y6.4689
19.19
950.466.468949.2Mpa
②2#油泵,千斤顶编号090202,压力表编号9023;
y
19.065x2.2376,则压力表读数计算如下:
y2.2376114.062.2376
x5.9Mpa19.06519.065
y2.2376228.112.2376
x11.8Mpa
19.06519.065
yP760.368KN
y2.2376760.3682.2376
x39.8Mpa
P0.7318601405950460N950.46KN
y0.15P0.15950.46142.57KN
y2.2376142.572.2376
x7.4Mpa19.06519.065
y0.3P0.3950.46285.14KN
y2.2376285.142.2376
x14.8Mpa
y2.2376950.462.237649.7Mpa
43#油泵,千斤顶编号090302,压力表编号1259;
19.193x1.3431,则压力表读数计算如下:
y1.3431114.061.3431
x5.9Mpa
19.19319.193
y1.3431228.111.3431
y1.3431760.3681.3431
x39.5Mpa
y1.3431142.571.3431
x7.4Mpa
y1.3431285.141.3431
x14.8Mpa
yP950.46KN
49.5Mpa
y1.3431950.461.3431
19.193
19.047x2.1925,则压力表读数计算如下:
y2.1925114.062.1925
x5.9Mpa19.04719.047
y2.1925228.112.1925
x11.9Mpa
19.04719.047
y2.1925760.3682.1925
x39.8Mpa19.04719.047
y2.1925142.572.1925
y2.1925285.142.1925
x14.9Mpa
y2.1925
x
19.047
950.462.1925
49.8Mpa
⑤5#油泵,千斤顶编号090304,压力表编号1199;
y19.071x0.6931,则压力表读数计算如下:
P0.7318601404760368N760.368KN15%控制应力时:
y0.6931114.060.6931
6.0Mpa19.07119.071
y0.6931
19.071
228.110.693112.0Mpa
yy0.693119.071
760.3680.693139.9Mpa
y0.15P
0.15950.46142.57KN
142.570.6931
7.5Mpa
y0.3P
0.3950.46285.14KN
285.140.6931
15.0Mpa
y
950.460.6931
49.9Mpa
⑥6#油泵,千斤顶编号
090305,
压力表编号9523;
y19.311x1.4319,则压力表读数计算如下:
y1.4319142.571.4319
x7.3Mpa
19.31119.311
y1.4319285.141.431914.7Mpa
⑦7#油泵,千斤顶编号090306,压力表编号1089;
y19.351x3.5574,则压力表读数计算如下:
y3.5574114.063.5574
x5.7Mpa
19.35119.351
y0.3P0.3760.368228.11KNy3.5574228.113.557411.6Mpa
y3.5574760.3683.5574
x39.1Mpa
y3.5574142.573.5574
x7.2Mpa
y3.557285.143.5574
x14.6Mpa
y3.5574950.463.5574
x48.9Mpa
⑧8#油泵,千斤顶编号090309,压力表编号3239;
y19.079x0.3843,则压力表读数计算如下:
y0.3843114.060.38436.0Mpa
19.079
y0.3843
228.110.3843
12.0Mpa
760.3680.3843
39.9Mpa
0.73
1860
1405950460N
950.46KN
0.15P
0.3843142.570.3843
0.3P0.3950.46285.14KN
285.140.3843
根据以上计算,将千斤顶张拉力与压力表读数对应关系汇总如下:
千斤顶张拉力与压力表读数对应关系表
钢绞线
张拉力
(KN)
1#千斤顶
2#千斤顶
3#千斤顶
4#千斤顶
5#千斤顶
6#千斤顶
7#千斤顶
8#千斤顶
压力表1269
压力表9023
压力表1259
压力表8823
压力表1199
压力表9523
压力表1089
压力表3239
4束
15%
30%
100%
5束
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