混凝土设计规范要求.doc

1 1.0.1 1.0.2 .1.0.3 ,.2 2.1 2.1.1 concrete structure2.1.2 plain concrete structure2.1.3 reinforced concrete structure2.1.4 prestressed concrete structure2.1.5 pretensioned prestressed concrete structure2.1.6 post-tensioned prestressed concrete structure2.1.7 cast-in-situ concrete structure2.1.8 prefabricated concrete structure2.1.9 assembled monolithic concrete structure2.1.10 frame structure2.1.11 shearwall structure2.1.12 - frame-shearwall structure2.1.13 deep flexural member52.1.14 deep beam22.52.1.15 ordinary steel bar2.1.16 prestressing tendon2.1.17 degree of reliability2.1.18 safety class2.1.19 design working life2.1.20 load effect2.1.21 load effect combination2.1.22 fundamental combination2.1.23 characteristic combination2.1.24 quasi-permanent combination3 3.1 3.1.1 3.1.2 3.1.3 ()3.1.4 ()1.5GB500113.1.5 910A3.1.6 3.1.7 GB500683.1.8 4 4.1 4.1.1 150mm28d95%4.1.2 C15HRB335 C20HRB400RRB400C20C30 C404.1.3 fck,ftk 4.1.3(N/mm)4.1.3C15C20C25C30C35C40C45C50C55C60C65C70C75C80fck10.013.416.720.123.426.829.632.435.538.541.544.547.450.2ftk1.271.541.782.012.202.392.512.642.742.852.932.993.053.114.1.4 fc,ft 4.1.4(N/mm)4.1.4C15C20C25C30C35C40C45C50C55C60C65C70C75fc7.29.611.914.316.719.121.123.125.327.529.731.833.835.9ft0.911.101.271.431.571.711.801.891.962.042.092.142.182.221 300mm0.8 24.1.5 Ec4.1.5( 10N/mm)4.1.5C15C20C25C30C35C40C45C50C55C60C65C70C75C80Ec2.202.552.803.003.153.253.353.453.553.603.653.703.753.804.1.6 fc,ft4.1.4 c4.1.6cc=c,min/ c,max(4.1.6)c,minc,max- 4.1.6cc0.20.2c0.30.3c0.40.4c0.376.1.9 ltrltr=d(6.1.9)pe-d-B-9.3.1ftk-fcu4.1.3ltr0.25ltr6.1.10 fpy,la9.3.16.1.11 ()(6.1.11)ctftk(6.1.11-1)cc0.8fck(6.1.11-2)ccct=pc+(6.1.11-3)ccct-ftkfck-fcu4.1.3NkMk-W0-6.1.12 ct2ftk(6.1.12-1)cc0.8fck(6.1.12-2)ctcc6.1.116.1.13 1(As+Ap)/A0.2%,Ap,A2ct=2ftkAs/A0.4%;ftkct2ftk0.2%0.4%314mm6.1.14 Np0ep0,(6.1.6-1)(6.1.6-2)p0p0 6.1.57 7.1 7.1.1 7.17.451010.77.1.2 123c0(7.1.2-1)0ccuc=fc(7.1.2-2)(7.1.2-3)(7.1.2-4)(7.1.2-5)c-cfc-4.1.40-fc00.0020.002cu-(7.1.2-5)cu0.00330.00330fcu,k-4.1.1n-n2.02.040.017.1.3 x1C5010.8C8010.74fc1C5011.0C8010.947.1.4 b1(7.1.4-1)(7.1.