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1.设计基本参数:
2. 罐壁分段及假设壁厚:
3. 罐壁计算:
4. 罐顶计算:
5.罐顶与罐壁的连接计算:
6. 风载荷及地震载荷计算
7. 地脚螺栓(锚栓)计算
储罐设计计算书
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1.设计基本参数:
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设计规范:
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GB50341-2003《立式圆筒形钢制焊接油罐设计规范》
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设计压力:
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P
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2000
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Pa
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-500
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Pa
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设计温度:
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T
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50
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°C
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设计风压:
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ω0
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540
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Pa
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设计雪压
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Px
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300
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Pa
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附加荷载:
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Ph
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1200
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Pa
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地震烈度:
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8
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度
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0.2g
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Ⅱ类第一组
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罐壁内径:
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D
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24
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m
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罐壁高度:
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H1
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13
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m
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充液高度:
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H
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13
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m
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液体比重:
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ρ
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1.5
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罐顶半径:
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Rs
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24
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m
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焊缝系数:
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Φ
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0.9
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腐蚀裕量:
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C2
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0
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mm
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钢板负偏差:
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C1
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0.8
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mm
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2. 罐壁分段及假设壁厚:
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罐壁尺寸、材料及许用应力如下:
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从下至上 分段号
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高度(m)
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厚度(mm)
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材料
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设计[σ]d(MPa)
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σs(MPa)
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σb(MPa)
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水压试验[σ]t(MPa)
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重量(kg)
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1
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2
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24
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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28438.5
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2
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2
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22
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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26066.4
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3
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2
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20
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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23694.8
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4
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2
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16
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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18952.7
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5
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2
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14
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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16582.2
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6
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1.5
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10
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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8881.8
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7
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1.5
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8
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00Cr17Ni14Mo2
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110
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165
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455.6
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110
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7104.9
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总重:
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mt
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129721.2
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3. 罐壁计算:
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1)设计厚度计算(储存介质):
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计算结果:
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从下至上分段数
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计算液位高度H(m)
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计算壁厚td(mm)
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名义厚度tn(mm)
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1
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13
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23.4
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24
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2
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11.5
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20.8
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22
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3
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10
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18.1
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20
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4
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8
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14.5
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16
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5
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6
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11.0
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14
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6
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4
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7.4
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10
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7
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2
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3.8
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8
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2)水压试验厚度计算:
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Pict
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计算结果:
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从下至上分段数
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计算液位高度H(m)
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计算壁厚tt(mm)
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1
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13
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15.09
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2
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11.5
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13.30
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3
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10
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11.52
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4
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8
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9.15
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5
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6
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6.77
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6
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4
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4.40
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7
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2
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2.02
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4. 罐顶计算:
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4.1光面球壳顶板的计算厚度:
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(如果不加肋板拱顶所需厚度)
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ths=0.42RsPower(Pw/2.2,0.5)+C2+C1
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11.90
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mm
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设计外载荷
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Pw=Ph+Px+Pa
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2.67
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KPa
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注:按保守计算加上雪压值。
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实际罐顶取用厚度为
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th=
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8
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mm
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本设计按加肋板结构
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顶板及加强筋(含保温层)总质量 md=
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53863
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kg
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罐顶固定载荷
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Pa
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1166.82
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N/m2
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4.2顶板计算
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4.2.1 拱顶的许用外压
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4.2.1 带肋拱顶的许用外压
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Pict
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4245
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Pa
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式中:
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[Po]——带肋拱顶许用外压
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Et——设计温度下材料的弹性模量
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199875
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MPa
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Rs——拱顶球面半径;
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24000
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mm
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te——顶板有效厚度
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7.2
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mm
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tm——带肋顶板的折算厚度
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12.76
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mm
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3783.1
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mm
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h1——纬向肋宽度
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50
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mm
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b1——纬向肋厚度
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10
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mm
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L1——纬向肋在经向的间距
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1500
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mm
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e1——纬向肋与顶板在经向的组合截面形心到顶板中面的距离
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2.77
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mm
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L1S——顶板有效参与筋板组合矩的宽度
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L1S=1.1(2Rste)0.5=
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646.67
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mm
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1.05
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δ2m——经向肋与顶板的折算厚度
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3783.1
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mm
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h2——经向肋宽度
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50
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mm
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b2——经向肋厚度
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10
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mm
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L2——经向肋在经向的间距
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1500
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mm
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Pict
e2——经向肋与顶板在经向的组合截面形心到顶板中面的距离
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2.77
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mm
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L2S——顶板有效参与筋板组合矩的宽度
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L2S=1.1(2Rste)0.5=
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646.67
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mm
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1.05
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4.2.2 带肋拱顶的稳定性验算
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拱顶载荷 P=Pw
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2667
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N/m2
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拱顶许用外压 [P0]:
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4245
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N/m2
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∵ [P0]>P,故满足稳定性要求,合格
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5.罐顶与罐壁的连接计算:
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5.1. 几何参数计算(如图)
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角钢规格:
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∠
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140
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×
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140
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×
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10
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罐顶与角钢连接位置
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B
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30
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mm
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罐外半径
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Rc
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12008
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mm
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罐壁连接有效宽度
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Wc=0.6(Rcte)0.5
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176.36
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mm
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罐顶连接有效宽度
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Wh=Min[0.3(R2te)
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124.55
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mm
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罐顶与罐壁连接处,罐顶切线与水平面夹角
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θ=arcsin((Rc+B)/Rs)=
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30.10
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°
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罐顶与罐壁连接处到罐中心线垂直距离
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R2=Rc/sinθ
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23940.19
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mm
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5.2. 罐顶与罐壁连接
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罐顶与罐壁连接处的有效截面积(按A.3.2)
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1805.77
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mm2
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注:此处的设计压力应为设计内压,不可等同于按液柱所确定的设计压力。
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罐顶与罐壁连接处的有效截面积(按7.5.3)
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A2=4.6DR2
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2643.00
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mm2
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罐顶与罐壁连接处的实际截面积(按图7.1.5确定)
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Aa=
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6277.50
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mm2
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实际截面积大于所需有效截面积,满足设计要求
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注:如果Aa≥mtg/(1415tgθ)=
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1551.14
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mm2
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顶部 应设置通气装置
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罐顶与罐壁连接处发生屈曲破坏压力(按设计压力P计算)
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PQ=1.6P-0.047th=
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3.20
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KPa
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其中:
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g=
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9.81
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m/s2
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满足连接要求
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6. 风载荷及地震载荷计算
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GB50341储罐设计计算 开云平台官方入口 搜集.xls(110.5 KB, 下载次数: 680)
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