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ijֽֽ¥ǣƽͼ14.5m¥ɱرֵ5kN/m2ϵ1.3¥Ϊ30mmˮĥʯ70mmˮʯҽ20mmʯɰĨC25ֱֽ12mmʱHRB335ֱ֣<12mmHPB235֡ ṹ
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80mm尴طֲ㣬ȡÿmΪ㵥Ԫйسߴ缰ͼͼ2ʾ
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30mmˮĥʯ 0.65kN/ m2 70mmˮཹ 14kN/ m30.07m0.98 kN/ m2 80mmֽ 25kN/ m30.08m2 kN/ m2 20mmʯɰ 17kN/ m30.02m0.34 kN/ m2 رֵ gk3.97 kN/ m2 رֵ qk5.0 kN/ m2 ֵ p1.23.97+1.35.011.26 kN/ m2 ÿװ p11.26 kN/ m 2.
h80mm bh200mm450mm ߿l012600100120+80/22420mm мl0226002002400mm
Ȳ24202400/24000.83<10ʰɰȿ㡣
л
Ʒ ؼ λ ߿ B֧ м мC֧
3.
ϵ 1/11 1/14 1/16 1/16 Mpl02 (kNm) 1/1111.262.422=5.99 1/1411.262.422=4.67 1/1611.262.42=4.05 1/1611.262.42=4.05 b1000mmh80mmh0802060mmfc11.9 N/mm2, ft =1.27 N/mm2, fy =210 N/mm2
ߢ~ܼİã2֧Cֵۼ20%Ϊ˷㣬ƶԸֽۼ20% λ ߿ 5.99 0.140 0.151 513 561mm2 B֧ 4.67 0.109 0.116 394 460 mm2 м ٣ ܣ ڣ4.050.8 л
MkNm ?s?M?1?1?2?s A?fcbh0(mm2) sfyfcbh02ʵֽ 10@140, 8/10@140, 8@140, 4.05 0.095 0.1 340 359 mm2 6/8@140, 0.076 0.079 269 281 mm2 Ʒ мC ֧ ٣ ܣ ڣ 4.05 0.095 0.1 340 8@140, 359 mm2 4.050.8 0.076 0.079 269 6/8@140, 281 mm2
ЦξС0.35طֲ
??f1.27281?0.27% ?0.35%>?min?0.2%45t?45?fy2101000?80ģͼͼͼ3 ĸֽ±
ĸֽ ״ߴ mm mm ֱ ע 1 10 3440 168 30 л