-
1.
梁
C
的主要参数:
其中:梁长
3000mm
,高为
406mm
,上
下部保护层厚度为
38mm
,纵筋端部保护
层厚度为
25mm
抗压强度:
35.1MPa
抗拉强度:
2.721MPa
受拉钢
筋为
2Y16
,受压钢筋为
2Y9.5
,屈服强度均为
440MPa
箍筋:
Y7@102
,屈服强度为
596MP
a
2.
混凝土及钢筋的本构关系
<
/p>
1
、运用陈光明老师的论文
(
Chen et al. 2011
)
来确定混凝土的本构关系:
受压强度:
其中
a
?
E
C
=28020
,
?
?
< br>?
f
c
?
,
?
?
?
0
.002
2
、受压强度与开裂位移的相互关系:
其中
c<
/p>
1
?
3.0,
c
2
?
6.93
3
、损伤因子:
其中
h
c<
/p>
?
e
2
e=10
(选取网格为
10mm
)
4
、钢筋取理想弹塑性
5
、名义应力应变和真实应力及对数应变的转换:
?
true
?
?
nom
(1
?
?
nom
)
?
Pl
?
ln
?
ln(1
?
?
nom
)
?
true
E
6
、混凝土最终输入的本构关系如下:
compressive behavior
tensile behavior
tension
damage
yield stress
inelastic
strain
yield stress
displacement
parameter
displacement
21.50274036
25.56359281
28.88477336
31.43501884
33.24951537
34.40787673
35.01203181
35.16872106
34.97805548
34.52749204
33.88973649
33.17350898
32.38173508
31.54367693
30.68161799
0
2.72247E-05
8.85105E-05
0.000177278
0.000292271
0.000430648
0.000588772
0.000762833
0.000949259
0.001144928
0.001347245
0.001541185
0.001737792
0.001936023
0.002135082
2.721
2.683556882
2.646628319
2.610210508
2.574299562
2.538891515
2.503982327
2.46956789
2.435644029
2.402206512
2.369251048
2.336773294
2.30476886
2.27323331
2.242162167
0
0.0003129
0.0006258
0.0009387
0.0012516
0.0015645
0.0018774
0.0021903
0.0025032
0.0028161
0.003129
0.0034419
0.0037548
0.0040677
0.0043806
0
0.18766492
0.31902609
0.41606933
0.49065237
0.54973463
0.5976698
0.63732097
0.67064827
0.69903885
0.72350194
0.74478941
0.76347284
0.77999451
0.79470205
0
0.0003129
0.0006258
0.0009387
0.0012516
0.0015645
0.0018774
0.0021903
0.0025032
0.0028161
0.003129
0.0034419
0.0037548
0.0040677
0.0043806
29.81223971
28.94780823
28.09715868
27.26649041
26.45999792
25.68036458
24.9291453
24.20706088
23.51422292
0.002334374
0.002533461
0.002732028
0.002929854
0.003126788
0.003322736
0.003517641
0.003711478
0.003904244
2.211550916
2.181395011
2.151689871
2.12243089
2.093613436
2.065232857
1.811529794
1.594228557
1.409074138
0.0046935
0.0050064
0.0053193
0.0056322
0.0059451
0.006258
0.00929484
0.01233168
0.01536852
0.8078724
0.81972898
0.83045397
0.84019745
0.84908413
0.85721852
0.91044231
0.93874748
0.95577145
0.0046935
0.0050064
0.0053193
0.0056322
0.0059451
0.006258
0.00929484
0.01233168
0.01536852
22.85030486
22.21467144
21.60647616
21.02473425
19.46615199
18.09649573
16.88924056
15.82079897
14.87092257
14.0225145
13.26124068
12.57510634
11.95406409
11.38967485
10.8748243
10.40348957
9.970548886
9.571626813
9.202968392
8.861336697
8.543929179
8.248309139
7.972349361
7.714185579
7.472177877
7.244878552
7.03100523
6.829418289
6.639101829
6.459147548
6.28874105
6.127150156
5.973714902
5.827838946
5.688982154
0.004095949
0.004286616
0.004476276
0.004664963
0.005211136
0.005750325
0.006283479
0.006811438
0.007334926
0.007854553
0.008370831
0.008884188
0.009394984
0.009903518
0.010410047
0.010914784
0.011417913
0.01191959
0.01241995
0.012919108
0.013417164
0.013914206
0.01441031
0.014905542
0.015399962
0.015893621
0.016386565
0.016878835
0.017370468
0.017861496
0.018351948
0.018841851
0.019331229
0.019820104
0.020308493
1.251989877
1.119164686
1.007104262
0.912655765
0.83301335
0.76571027
0.70860194
0.659843281
0.617862826
0.581335427
0.549154863
0.520407288
0.494346111
0.470368707
0.447995166
0.426849151
0.406640876
0.387152119
0.368223154
0.349741479
0.331632153
0.313849623
0.296370844
0.279189562
0.262311613
0.245751087
0.229527257
0.21366215
0.19817866
0.183099114
0.168444224
0.154232347
0.140478996
0.127196557
0.11439417
0.01840536
0.0214422
0.02447904
0.02751588
0.03055272
0.03358956
0.0366264
0.03966324
0.04270008
0.04573692
0.04877376
0.0518106
0.05484744
0.05788428
0.06092112
0.06395796
0.0669948
0.07003164
0.07306848
0.07610532
0.07914216
0.082179
0.08521584
0.08825268
0.09128952
0.09432636
0.0973632
0.10040004
0.10343688
0.10647372
0.10951056
0.1125474
0.11558424
0.11862108
0.12165792
0.96680725
0.97433278
0.97965764
0.98353505
0.98642583
0.98862533
0.99032981
0.99167339
0.9927498
0.99362574
0.9943494
0.994956
0.99547154
0.99591542
0.9963022
0.99664288
0.99694586
0.99721757
0.99746298
0.99768595
0.99788954
0.99807615
0.99824773
0.99840586
0.99855185
0.99868678
0.99881158
0.99892706
0.99903393
0.99913281
0.99922427
0.99930883
0.99938695
0.99945909
0.99952564
0.01840536
0.0214422
0.02447904
0.02751588
0.03055272
0.03358956
0.0366264
0.03966324
0.04270008
0.04573692
0.04877376
0.0518106
0.05484744
0.05788428
0.06092112
0.06395796
0.0669948
0.07003164
0.07306848
0.07610532
0.07914216
0.082179
0.08521584
0.08825268
0.09128952
0.09432636
0.0973632
0.10040004
0.10343688
0.10647372
0.10951056
0.1125474
0.11558424
0.11862108
0.12165792
5.556654195
5.430408983
5.309839835
5.194575252
0.020796417
0.021283889
0.021770927
0.022257541
0.102077724
0.09024996
0.078910632
0.068056727
0.057682705
0.047780771
0.038341146
0.02935234
0.12469476
0.1277316
0.13076844
0.13380528
0.13684212
0.13987896
0.1429158
0.14595264
0.999587
0.99964352
0.99969553
0.99974335
0.99978729
0.99982763
0.99986461
0.99989851
0.12469476
0.1277316
0.13076844
0.13380528
0.13684212
0.13987896
0.1429158
0.14595264
3.
建模过程
1
、
Part
梁和垫块选择
shell
,钢筋选择
wire
2
、
Property
混凝土:
density
以及
Elastic
的数值参考老师的论文
Concrete damaged
plasticity
:数值为前面的本构关系值。
粘性参数取
0.0005
截面的定义:
梁及垫块类型选择均质实体,钢筋类型选择桁架
箍筋被赋予截面属性:
3
、
Assembly
4
、
Step
建立名为
Step-1
的分析步
5
、
Interaction
约束有几种情况
a.
对垫块与梁的相互作用,选择
tie
b.
参考点的相互作用,选择
coupling
c.
对钢筋整体与梁的相互作用,选择
embedded
region
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