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带刚性环耳座的计算 |
项目号 ITEM NO. |
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| Calculation of Support Lugs with Rings |
文件号 DOC. NO. |
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注： |
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| 计算依据： |
HG20582-2011 |
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1 |
黄色的背景是需要输入的项，蓝色字体为结果。如果出现红色文字，则说明计算不通过或超过适用范围。 |
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This calculation is prepared referring to HG20582-2011 |
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容器计算外径如果有护笼需要手动输入。 |
Do‘=Do+400 |
5100 |
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3 |
“圆筒壳体壁厚扣除壁厚附加量后的厚度”当压力较高时，应当考虑内压与支座应力的叠加 |
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此时建议取0或者取“圆筒壳体壁厚扣除设计厚度” |
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| 1.设计条件 Design Condition |
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| 圆筒壳体的名义厚度 Nominal thickness of shell |
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δ= |
20 |
mm |
| 垫板的名义厚度 Nominal thickness of pad |
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δ1=
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10 |
mm |
| 扣除因内压或外压计算需要厚度（计算厚度）及扣除厚度附加量（腐蚀余量及厚度负偏差）后圆筒富余厚度 Efective thickness of shell |
δ0=
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3 |
mm |
| 垫板壁厚扣除壁厚附加量后的厚度 Effective thickness of pad |
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δ01=
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9.7 |
mm |
| 筋板的厚度扣除壁厚附加量后的厚度 Effective thickness of gusset |
δ4=
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19.7 |
mm |
| 刚性环的有效厚度 Effective thickness of rings |
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T= |
30 |
mm |
| 刚性环的宽度 Width of rings |
B= |
250 |
mm |
| 垫板加强宽度 The Strengthen width of pad |
C= |
100 |
mm |
| 圆筒壳体外径 Outside diameter of shell |
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D0=
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4500 |
mm |
| 垫板的外径 Outside diameter of pad |
D01=
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4520 |
mm |
| 支座外直径The diameter of support plate |
Dob=
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5300 |
mm |
| 地震影响系数 Seismic coefficient |
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α= |
0.12 |
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| 基本风压 Basic wind pressure |
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qo=
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550 |
Pa |
| 地面粗糙度类别 Ground roughness category (输入A、B、C 或 D) |
A |
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| 保温厚度 Thickness of insulation |
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tk= |
100 |
mm |
| 筒体有效当量直径 Equivalent diameter of shell |
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De=
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4700 |
mm |
| 设备高度 Height of equipment |
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H= |
14000 |
mm |
| 耳座底板下表面到设备重心的距离 Distance from bottom of lower ring to centroid of equipment |
h1=
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2260 |
mm |
| 设备质心离地面高度 Height from ground to centroid of equipment |
Z= |
20000 |
mm |
| 耳式支座数目 Number of lug supports |
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n= |
8 |
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| 耳式支座的高度 Height of lug supports |
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h= |
500 |
mm |
| 设备操作时质量 Operating mass of equipment |
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mo=
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300000 |
kg |
| 设备试验时质量 Hydro test mass of equipment |
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mt=
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500000 |
kg |
| 偏心载荷 Eccentric load |
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Ge= |
10000 |
N |
| 偏心距离 Eccentric length |
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Se= |
4000 |
mm |
| 附加水平推力 Additional Horizontal load |
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FL=
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2000 |
N |
| 水平推力距支座底板的距离 Distance of FL to bottom plate of support |
h2= |
3000 |
mm |
| 地脚螺栓中心圆直径 Anchor bolt circle diameter |
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Db=
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5000 |
mm |
反力Fb至壳体外壁的距离
Distance from reaction force Fb to outer surface of shell |
b= |
250 |
mm |
| 筋板材料的设计温度下许用应力 Allowable stress of gusset material at design temperature |
[σr]=
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117 |
MPa |
| 刚性环材料设计温度下的许用应力 Allowable stress of ring material at design temperature |
[σ]= |
117 |
Mpa |
刚性环材料常温下的许用应力
Allowable stress of ring material at room temperature |
[σ]0=
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147 |
Mpa |
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| 2.载荷计算 Load Calculation |
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| 风压高度变化系数f Wind pressure coefficient f |
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| 地面粗糙度类别 Ground roughness category |
A |
f=0.794Z0.24 |
(Z≤5m时，f=1.17) |
1.63 |
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| B |
f=0.479Z0.32 |
(Z≤10m时，f=1.00) |
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| C |
f=0.2244Z0.44 |
(Z≤15m时，f=0.74) |
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| D |
f=0.0798Z0.60 |
(Z≤30m时，f=0.62) |
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| 水平地震力 Horizontal seismic load |
操作时Operation |
Pe=α×mo×g= |
352800 |
N |
| 水压试验时Hydro test: |
Pe'= |
0 |
N |
| 水平风载荷 Horizontal wind load |
操作时Operation |
Fw=1.2×f×qo×H×De×10-6= |
70768.10 |
N |
| 水压试验时Hydro test: |
Fw'=0.3Fw= |
21230.43 |
N |
| 作用于设备的水平力 Horizontal load acting on the vessel |
操作时Operation |
Fh=max(Fw，Pe+0.25Fw) |
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370492.025 |
N |
| 水压试验时Hydro test: |
Fh'=Fw'= |
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21230.43 |
N |
| 作用于设备耳座上的弯矩Overturning moment acting on lug |
操作时Operation |
M=Fh×h1= |
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837311976 |
N.mm |
| 水压试验时Hydro test: |
M'=Fh'×h1= |
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47980771 |
N.mm |
| 支座处反力 Reaction force at lug support |
操作时Operation |
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457456.198 |
N |
| 水压试验时Hydro test: |
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623798.077 |
N |
支座处等效反力
The effect reaction force at lug support |
Fbe=max(Fb, Fb'[σ]/[σ]0)= |
496492.347 |
N |
| 支座处作用于刚性环上的力 Radial force on rings |
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248246.174 |
N |
| 耳座间夹角的一半 Half of included angle of adjacent two supports |
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θ＝π/n |
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0.3927 |
弧度 rad |
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| 3.惯性矩、形心计算 Calculation of Moment of Inertia and Centroid |
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| 圆筒体上有效加强宽度 Effective width of shell |
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127.81 |
mm |
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| 垫板圆筒上有效加强宽度 Effective width of cylindrical pad |
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230.33 |
mm |
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| 垫板圆筒上计算取用有效加强宽度 Effective cal. width of pad |
Lsi=min(Lsi',C+Lsi'/2,h/2+min(C,Lsi'/2))= |
215.16 |
mm |
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| 组合截面的面积 Area of composite cross section |
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9970.52 |
mm2 |
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| 刚性环外缘至惯性轴的距离 Distance from outer peripherence to inertia axis |
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157.42 |
mm |
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Ds＝Do+2×（δ1+B-a） |
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4705.16 |
mm |
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Rs＝0.5×Ds |
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2352.58 |
mm |
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a1=a-0.5×B |
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32.42 |
mm |
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a2=B＋0.5×δ1-a |
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97.58 |
mm |
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a3=B+δ1+0.5×δ0-a |
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104.08 |
mm |
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4.69E+07 |
mm4 |
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1.99E+07 |
mm4 |
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4.15E+06 |
mm4 |
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| 组合截面的惯性矩 Moment of inertia of composite cross section |
I=I1+I2+I3 |
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7.10E+07 |
mm4 |
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| 4.应力校核 Check of stresses |
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| 筋板高度The height of gussets |
hg=h-T= |
470.00 |
mm |
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| 筋板角度 The angle of gussets |
β=atan(hg/((Dob-D01)/2-B))= |
1.28 |
rad |
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| 筋板长度 The length of gussets |
L2=hg/sinβ= |
490.41 |
mm |
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| 惯性半径 radius of inertia |
r=0.289δ4= |
5.69 |
mm |
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| 筋板材料的压缩许用应力 The allowance compress stress of gussets |
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80.52 |
MPa |
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| 每个支座的筋板数The NO. of gussets for one lug |
k= |
2.00 |
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| 筋板材料的最大压缩应力 The max. compress stress of gussets |
FR=Fbe/(ksinβ)= |
2.59E+05 |
N |
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| 基础板下表面到支耳装配焊缝中心长度The length from bottom plate to the weld center of lug |
L1=(Dob-D01)sinβ/2= |
373.77 |
mm |
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| 支座中性轴与底板下表面交点至容器外壁的距离The distance from neutral axis to outside of shell |
b= |
250.00 |
mm |
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| 偏心距 eccentric distance |
e=(b-(Dob-D01)/4)sinβ= |
52.71 |
mm |
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| 筋板最大压缩应力The max. compress stress of gussets |
σc,max=FR/L1δ4+6eFR/L12δ4= |
64.94 |
MPa |
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| 筋板应力校核 check stability of gussets |
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σc,max |
≤ |
[σc] |
So it's OK |
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| 支座处和两支座中间处刚性环组合截面上的应力校核 Check of stress in rings |
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| 支座处 At lug support |
内力矩 Internal moment |
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-3.86E+07 |
N·mm |
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| 周向力 Circumferential force |
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3.00E+05 |
N |
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| 应力 Stress |
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115.70 |
MPa |
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σ1 |
≤ |
[σ] |
So it's OK |
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| 两支座中间处 At middle of two supports |
内力矩 Internal moment |
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1.95E+07 |
N·mm |
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| 周向力 Circumferential force |
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3.24E+05 |
N |
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| 应力 Stress |
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75.69 |
MPa |
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σ2 |
≤ |
[σ] |
So it's OK |
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5. 当支座用于弹簧支撑时，支座底板计算.
When the support supported by spring, the bottom plate calculation |
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底板厚度 The thickness of bottom plate |
T3=
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100 |
mm |
| 支座处相邻两筋板间距The distance between ribs |
L3=
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400 |
mm |
| 底板螺栓孔径The diameter of setting bolt hole |
d= |
93 |
mm |
| 底板设计温度下许用应力Allowable stress of bottom plate at design temperature |
[σ]Z=
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117 |
MPa |
| 底板长度The length of bottom plate |
L2=(Dob-D01-2B)/2= |
140.00 |
mm |
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| 底板最大应力The max. stress of bottom plate |
σZ=FL3/((l2-d)T32)= |
211.27 |
Mpa |
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σZ |
≥ |
[σ]Z |
底板应力校核不合格It is not safe. |
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