混凝土本构数据.docx
《混凝土本构数据.docx》由会员分享，可在线阅读，更多相关《混凝土本构数据.docx（29页珍藏版）》请在冰点文库上搜索。
混凝土本构数据
附录一
动力弹塑性分析的材料非线性参数取值
一混凝土材料:
混凝土材料采用塑性损伤模型（Plastic-DamagedModel）
（1）.
根据GB50010-2002混凝土强度分类如下:
C25,C30,C35,C40,C45,C50,C55,C60,C65,C70,C75,C80
（1）弹性模量:
按
（2）表4.1.5,单位kN/m2
表1弹性模量
C25
C30
C35
C40
C45
C50
2.8E7
3E7
3.15E7
3.25E7
3.35E7
3.25E7
C55
C60
C65
C70
C75
C80
3.55E7
3.6E7
3.65E7
3.7E7
3.75E7
3.8E7
（2）泊松比,统一取0.2（参阅
（2）的4.1.8）
（3）剪切模量:
按
（2）表4.1.5中的0.4倍采用（参阅
（2）的4.1.8）.
（4）密度
（2）:
2.5T/m3
（5）单轴应力-应变关系
混凝土材料轴心抗压和轴心抗拉强度标准值按
（2）表4.1.3采用.
A:
单轴受压,其应力-应变关系方程如下（参阅
（2）C.2.1,P206）:
当
时
当
时
在0–0.7fc的应力范围为线弹性,其弹性模量按表1.大于0.7fc为塑性范围,应力-塑性应变关系如下:
B:
单轴受拉,其应力-应变关系方程如下（参阅
（2）C.2.2,P208）:
当
时
当
时
在0–ft的应力范围为线弹性,其弹性模量按表1.大于ft为塑性范围,应力-塑性应变关系如下:
据此得到下列各等级混凝土材料在拉和压屈服后的应力（kN/m2）-塑性应变关系:
*Material,Name=C25
*Concretecompressionhardening
应力（kN/m2）塑性应变
11690.,0
16700.,0.000808693
13239.8,0.00233739
9841.27,0.00386389
7674.36,0.0053464
6248.49,0.00680245
5255.01,0.00824305
4527.98,0.00967414
3974.73,0.011099
3540.4,0.0125197
*Concretetensionstiffening
1797.8,0
1780.,0.000025515
1191.06,0.000135635
859.483,0.000236563
684.527,0.000331898
576.455,0.000424844
502.469,0.000516573
448.233,0.000607596
406.519,0.000698173
373.278,0.000788446
131.57,0.00355876
*Material,Name=C30
*Concretecompressionhardening
14070.,0
20100.,0.000801898
14636.6,0.00245591
10073.3,0.00407992
7500.85,0.00563756
5931.13,0.00716179
4889.86,0.00866839
4153.49,0.0101648
3607.,0.011655
3186.09,0.0131409
*Concretetensionstiffening
2030.1,0
2010.,0.0000282563
1232.19,0.00014944
849.073,0.000257466
660.524,0.000359008
548.371,0.000458002
473.404,0.000555757
419.357,0.000652815
378.298,0.00074944
345.892,0.000845777
118.271,0.00380631
*Material,Name=C35
*Concretecompressionhardening
16380.,0
23400.,0.000789431
15814.6,0.00256253
10267.4,0.00427092
7408.77,0.00589395
5749.74,0.00747891
4682.74,0.00904507
3943.69,0.0106008
3403.29,0.0121503
2991.69,0.0136956
*Concretetensionstiffening
2222.,0
2200.,0.0000301427
1253.05,0.000160189
834.315,0.000273466
638.442,0.000379668
524.938,0.000483255
450.278,0.000585609
397.041,0.000687284
356.924,0.000788541
325.457,0.000889524
109.188,0.00399589
*Material,Name=C40
*Concretecompressionhardening
18760.,0
26800.,0.000764814
16909.7,0.00265856
10469.9,0.00444614
7378.84,0.00613068
5650.07,0.0077733
4562.41,0.0093962
3819.83,0.0110085
3282.34,0.0126144
2876.02,0.0142164
*Concretetensionstiffening
2413.9,0
2390.,0.0000309422
1263.67,0.000170079
815.537,0.000288349
615.229,0.000398993
501.733,0.000506966
428.08,0.000613712
376.039,0.000719794
337.082,0.000825474
306.681,0.00093089
101.338,0.00417611
*Material,Name=C45
*Concretecompressionhardening
20720.,0
29600.,0.00075015
17743.1,0.00273782
10639.8,0.00458359
7386.84,0.00631443
5609.46,0.00800122
4506.18,0.00966788
3759.48,0.0113239
3222.27,0.0129737
2817.97,0.0146195
*Concretetensionstiffening
2535.1,0
2510.,0.0000323044
1265.87,0.000176673
802.219,0.000297743
600.343,0.000410999
487.385,0.0005216
414.624,0.000631002
363.47,0.000739759
325.314,0.000848128
295.619,0.000956244
96.8983,0.0042863
*Material,Name=C50
*Concretecompressionhardening
22680.,0
32400.,0.000739885
18515.2,0.00282136
10800.8,0.00472398
7406.35,0.00650139
5586.72,0.00823314
4469.4,0.00994455
3718.4,0.0116453
3180.69,0.0133399
2777.43,0.0150306
*Concretetensionstiffening
2666.4,0
2640.,0.0000336591
1264.64,0.000183705
786.735,0.000307738
584.088,0.000423793
472.094,0.00053722
400.477,0.000649477
350.37,0.00076111
313.124,0.00087237
284.214,0.000983389
92.4472,0.00440455
*Material,Name=C55
*Concretecompressionhardening
24850.,0
35500.,0.00072745
19297.,0.00291132
10959.8,0.00487362
7429.12,0.00670053
5569.63,0.00848036
4439.05,0.0102397
3683.89,0.0119884
3145.52,0.013731
2743.03,0.0154698
*Concretetensionstiffening
2767.4,0
2740.,0.0000352217
1261.67,0.00018927
774.457,0.000315399
571.752,0.000433514
460.697,0.000549047
390.039,0.000663442
340.767,0.000777235
304.231,0.000890669
275.923,0.00100387
89.2809,0.00449368
*Material,Name=C60
*Concretecompressionhardening
26950.,0
38500.,0.000700606
19978.3,0.00298515
11087.9,0.00500215
7444.03,0.00687342
5552.82,0.008696
4412.21,0.0104977
3654.2,0.0122888
3115.66,0.0140739
2714.07,0.0158551
*Concretetensionstiffening
2878.5,0
2850.,0.0000356383
1256.67,0.000194702
760.756,0.000323283
558.434,0.000443708
448.564,0.000561565
379.016,0.000678302
330.681,0.000794449
294.926,0.000910248
267.272,0.00102582
86.0337,0.00458981
*Material,Name=C65
*Concretecompressionhardening
29050.,0
41500.,0.000671154
20635.5,0.00305092
11227.6,0.00511681
7477.58,0.00702769
5554.81,0.00888851
4402.81,0.0107282
3640.4,0.0125572
3100.27,0.0143802
2698.31,0.0161993
*Concretetensionstiffening
2959.3,0
2930.,0.0000362462
1252.05,0.000198738
750.74,0.000328992
548.949,0.000451041
440.021,0.000570546
371.305,0.000688948
323.655,0.000806774
288.463,0.000924259
261.278,0.00104152
83.8153,0.00465851
*Material,Name=C70
*Concretecompressionhardening
31150.,0
44500.,0.000641177
21274.9,0.00311276
11377.9,0.00522413
7526.44,0.0071721
5571.79,0.00906881
4407.16,0.0109442
3639.02,0.0128088
3096.11,0.0146674
2692.74,0.0165221
*Concretetensionstiffening
3019.9,0
2990.,0.000036979
1248.1,0.000201847
743.23,0.000333282
541.959,0.000456512
433.772,0.000577225
365.689,0.000696855
318.553,0.000815919
283.779,0.000934649
256.941,0.00105316
82.2252,0.00470937
*Material,Name=C75
*Concretecompressionhardening
33180.,0
47400.,0.000619583
21842.2,0.00318471
11504.1,0.00534398
7565.26,0.00733259
5583.9,0.00926901
4408.93,0.0111839
3636.25,0.0130881
3091.21,0.0149862
2686.84,0.0168806
*Concretetensionstiffening
3080.5,0
3050.,0.0000377117
1243.9,0.000204919
735.834,0.000337513
535.156,0.000461909
427.722,0.000583819
360.269,0.000704663
313.639,0.000824951
279.275,0.000944913
252.774,0.00106466
80.7083,0.00475965
*Material,Name=C80
*Concretecompressionhardening
35140.,0
50200.,0.000601539
22358.2,0.00325681
11618.5,0.00546203
7601.82,0.00749032
5596.63,0.00946568
4412.34,0.0114194
3635.46,0.0133625
3088.38,0.0152995
2683.,0.0172327
*Concretetensionstiffening
3141.1,0
3110.,0.0000384437
1239.38,0.000207956
728.476,0.000341687
528.471,0.000467236
421.811,0.000590329
354.989,0.000712373
308.862,0.000833873
274.904,0.000955052
248.735,0.00107603
79.2484,0.00480935
（6）损伤系数:
混凝土材料进入塑性状态伴随着刚度的降低,如下图示
（1）:
受拉
受压
文献（3）Fig4.（a）,（b）给出了混凝土材料单轴拉压的滞回曲线.该曲线已被实验和计算验证.通过线性插值,可以得到混凝土材料各塑性应变所对应的损伤系数如下:
*Material,Name=C25
*Concretecompressiondamage
损伤系数（dc）塑性应变
0,0
0.01,0.000808693
0.207199,0.00233739
0.410702,0.00386389
0.540458,0.0053464
0.69718,0.00680245
0.78611,0.00824305
0.84114,0.00967414
0.877465,0.011099
0.902661,0.0125197
*Concretetensiondamage
损伤系数（dt）塑性应变
0,0
0.01,0.000025515
0.330864,0.000135635
0.517144,0.000236563
0.615434,0.000331898
0.747045,0.000424844
0.834016,0.000516573
0.888637,0.000607596
0.919064,0.000698173
0.937999,0.000788446
0.998225,0.00355876
*Material,Name=C30
*Concretecompressiondamage
0,0
0.01,0.000801898
0.271809,0.00245591
0.498841,0.00407992
0.626823,0.00563756
0.758068,0.00716179
0.830984,0.00866839
0.875447,0.0101648
0.904483,0.011655
0.924462,0.0131409
*Concretetensiondamage
0,0
0.01,0.0000282563
0.386973,0.00014944
0.577576,0.000257466
0.671381,0.000359008
0.78758,0.000458002
0.862336,0.000555757
0.908476,0.000652815
0.933922,0.00074944
0.949638,0.000845777
0.998607,0.00380631
*Material,Name=C35
*Concretecompressiondamage
0,0
0.01,0.000789431
0.324164,0.00256253
0.561223,0.00427092
0.683386,0.00589395
0.796302,0.00747891
0.858328,0.00904507
0.89589,0.0106008
0.92031,0.0121503
0.937062,0.0136956
*Concretetensiondamage
0,0
0.01,0.0000301427
0.430433,0.000160189
0.620766,0.000273466
0.709799,0.000379668
0.814503,0.000483255
0.880713,0.000585609
0.921137,0.000687284
0.943295,0.000788541
0.956917,0.000889524
0.998833,0.00399589
*Material,Name=C40
*Concretecompressiondamage
0,0
0.01,0.000764814
0.369042,0.00265856
0.609331,0.00444614
0.72467,0.00613068
0.823245,0.0077733
0.877128,0.0093962
0.90969,0.0110085
0.930844,0.0126144
0.945352,0.0142164
*Concretetensiondamage
0,0
0.01,0.0000309422
0.471266,0.000170079
0.658771,0.000288349
0.742582,0.000398993
0.836523,0.000506966
0.895279,0.000613712
0.930952,0.000719794
0.95046,0.000825474
0.962428,0.00093089
0.998995,0.00417611
*Material,Name=C45
*Concretecompressiondamage
0,0
0.01,0.00075015
0.40057,0.00273782
0.640546,0.00458359
0.750445,0.00631443
0.840063,0.00800122
0.888862,0.00966788
0.918306,0.0113239
0.937422,0.0129737
0.950532,0.0146195
*Concretetensiondamage
0,0
0.01,0.0000323044
0.495671,0.000176673
0.680391,0.000297743
0.760819,0.000410999
0.849034,0.0005216
0.903712,0.000631002
0.936711,0.000739759
0.954691,0.000848128
0.965692,0.000956244
0.999092,0.0042863
*Material,Name=C50
*Concretecompressiondamage
0,0
0.01,0.000739885
0.428544,0.00282136
0.666642,0.00472398
0.771409,0.00650139
0.853722,0.00823314
0.898389,0.00994455
0.9253,0.0116453
0.942763,0.0133399
0.954738,0.0150306
*Concretetensiondamage
0
升级会员 