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1、Calculation Sheet for Canopy of Undergroud Lobby-Doha High Rise Office BuildingKing Glass Engineering GroupCalculated by： Checked by： Approved by：Architectural: Structural:This calculation sheets should be read in conjunction with the related drawings.2 / 301. Calculation of Perforated Al SheetThe p
2、erforated Al sheet at the outermost of the canopy is the most critical one in press bearing and calculation is required. Relevant sketches are as follows: Figure 1-1 Perforated Al Sheet Plan Figure 1-2 Section A-AFigure 1-3 Section B-B Figure 1-4 Sample CFigure 1-5 Sample D Figure 1-6 Sample E1.1 Ca
3、lculation of Supporting Frame and Rinforcement Bar of Al Sheet1.1.1 Design Sketch Figure 1-6 Supporting Frame and Reiforcement BarThe in the sketch symbolizes hinged connection.Section of frame is as follows:Figure 1-7 Frame SectionSection data of reinforcement bar is as follows:Figure 1-8 Sectional
4、 Data of Reinforcement Bar1.1.2 Standard Load1.1.2.1 Standard WindloadThis project is 100m from the coastline, which ground surface roughness is sorted as “Village”.Building-type factor: Kb=2。（BS6399 part2-1.6.1 table 1）Building height: H=1.3m300m,Cr0.25,( BS6399 part2-1.6.1 table 1)Effective height
5、: He=1.3m According to Section 2.2.2, part 5 of tender document for Doha High Rise Office Building, the basic wind speed Vb is 25m/s.Site windspeed: Vs=VbSaSdSsSp (BS6399-part 2-2.2.2)Sa=1+0.001s (BS6399-part 2-3.2.2) In which：In which：Vb Basic wind speed.Sa Height factorSd Direction factor (Ref. BS
6、6399, Clause2.2.2.3, Volume 2.)Ss Season factor (Ref. BS6399, Clause2.2.2.4, Volume 2.)Sp Propability factor (Ref. BS6399, Clause2.2.2.5, Volume 2.)s is the altitude of site ground surface.s=2m, So, Sa=1+0.001x2=1.002Sd =1.0，Ss =1.0 ，Sp =1.0 Vs=VbSaSdSsSp=25x1.002x1.0x1.0x1.0x1.0=25.05m/sEquivalent
7、wind speed is：Ve=VsSb (BS6399 Part-3.2.3.1, Division 2)Sb= Sc1+（gtxSt）+Sh (BS6399 Part-3.2.3.2.2, Division 2)In which：Sb Factor of topography and building. Sc Wind field factor (Ref. BS6399 table 22, Division 2)St Onflow adjustment factor(Ref. BS6399 table 22, Division 2)gt Gust peak factor (Ref. BS
8、6399 clause 3.2.3.3, Division 2)Sh Topography increment (Ref. BS6399 clause 3.2.3.4, Division 2):Sc=0.873（effective height He=1.3m）; St=0.203（effective height He=1.3m）;gt =3.44; Sh=0：Sb= Sc1+（gtxSt）+Sh= 0.873x1+（3.44x0.203）+0=1.483Effective wind speed at 1.3m:Ve=VsSb=25.05x 1.483=37.15m/s Dynamic pr
9、ess is：q=0.613Ve2=0.613x(37.15)2=846N/m2=0.846KN/m2 (BS6399, Part-3.1.2.1,Division 2)static press p ：p=qeCp （3.1.3.1.3 b ） qe is dynamic press susdained by canopy or building members under effective wind speed. See 3.1.2；Cp is the coefficient of static press on members. See 2.7.qe =q=846N/m2Cp=2.0p=
10、 qeCp=846X（2.0）=1692 N/m2Punching ratio of perforated Al sheet is 32.1%.So the standard effective windload on Al sheet is:(1-0.321)x1692=1149 N/m2（Attraction）1.1.2.2 Standard Deadload（1），Deadload of Perforated Al SheetThickness of Al sheet is 3mm with punching ratio 32.1%. For the strength of materi
11、al is decided by youngs modulus and moment of inertia,ie rigidness：EI, in which E is youngs modulus and I is moment of inertia. In this design, the sheet is uniform with holes laid out uniformly. So we can assume that the moment of inertia of the perforated sheet equals with Al sheet with the same d
12、imension multiply (1-0.321). Again, for El is a fixed value, so we can use a equivalent mock-up, ie: Decrease E without changing I, the youngs modulus of the original sheet E=0.7x105N/mm2.So equivalent youngs modulus of perforated sheet E1 =0.7 x105 x(1-0.321)=0.4573 x105N/mm2.The same，the equilaven
13、t compensation density of perforated sheet is:2.8 x10-6x(1-0.321)=1.9 x10-6 kg/mm3Deadload of perforated Al sheet is auto-calculated by ANSYS with gravity acceleration 9.8m/s2.（2），Al Frame and Reinforcement BarYoungs modulus of frame and reinforcement bar E=0.7 x105 N/mm2。Density: 2.8 x10-6 kg/mm3De
14、adload of perforated Al sheet is auto-calculated by ANSYS with overall gravity acceleration 9.8m/s2.1.1.3 Load CombinationStrength calculation：1.0deadload+1.2windloadDeflection calculation：1.0deadload+1.0windload（BS8118-1 3.2.3Table 3.1）1.1.4 Strength Calculation1.1.4.1 Design LoadIn this design, un
15、ifromly distributed windload on the Al sheet is: 1.2x1.149x10-3=1.379 x10-3 N/mm2Deadload of perforated Al sheet is auto-calculated by ANSYS with overall gravity acceleration 9.8m/s2.Simulate frame and reinforcement bar with beam 188 of ANSYS, simulate perforated Al sheet with shell 163. Confine the
16、 movement of each support in Figure 1-5 in direction x, y and z. Calculate with the throry of minimum deflection. 1.1.4.2 Mock-up for CalculationMock-up for calculation is as follows:Figure 1-9 Mock-up for Frame and Reiforcement Bar (Front View)Figure 1-10 Mock-up for Frame and Reiforcement Bar (Bac
17、k View)1.1.4.3 Results of Strength CalculationStress bearing calculation is as bellows:Figure 1-11 Stress bearing of Frame and Reiforcement Bar-Under Design LoadGrade of Al frame and reinforcement is 6063A-T5 with yield strength160 N/mm2.Maximum stress is: 82.117N/mm2160/m160/1.2=133.3N/mm2(m materi
18、al coefficient, see BS8118-part1-3.3.3 Table3.3)Meet the requirement !1.1.5 Deflection Calculation 1.0deadload+1.0windloadDeflection is as follows:Figure 1-12 Deflection of Al Frame and Reinforcement Bar-Under Standard LoadMax.deflection is ：6.455mm1355/100=13.55mm （BS8118part13.4.1table 3.4）Meet th
19、e rquirements !1.2 Calculation of Perforated Al Sheet1.2.1 Design SketchInterval between two Al welding bolts should not less than 350mm. So design sketch of perforated Al sheet is: Figure 1-13 Design Sketch of Al Sheet1.2.2 Standard Load1.2.2.1 Standard WindloadStandard effective windload on perfor
20、ated Al sheet is:(1-0.321)x1692=1149 N/m2（suction）1.2.2.2 Standard DeadloadThickness of Al sheet is 3mm with punching ratio 32.1%. For the strength of material is decided by youngs modulus and moment of inertia,ie rigidness：EI, in which E is youngs modulus and I is moment of inertia. In this design,
21、 the sheet is uniform with holes laid out uniformly. So we can assume that the moment of inertia of the perforated sheet equals with Al sheet with the same dimension multiply (1-0.321). Again, for El is a fixed value, so we can use a equivalent mock-up, ie: Decrease E without changing I, the youngs
22、modulus of the original sheet E=0.7x105N/mm2.So equivalent youngs modulus of perforated sheet E1 =0.7 x105 x(1-0.321)=0.4573 x105N/mm2.The same，the equilavent compensation density of perforated sheet is:2.8 x10-6x(1-0.321)=1.9 x10-6 kg/mm3Deadload of perforated Al sheet is auto-calculated by ANSYS w
23、ith overall acceleration 9.8m/s2.1.2.3 Load CombinationStrength calculation：1.0deadload+1.2windloadDeflection calculation：1.0 deadload+1.0windload（BS8118-1 3.2.3Table 3.1）1.2.4 Strength Calculation1.2.4.1 Design LoadIn this design, uniformly distributed windload on Al sheet is:1.2x1.149x10-3=1.379 x
24、10-3 N/mm2Deadload of perforated Al sheet is auto-calculated by ANSYS with overall acceleration 1.0x9.8m/s2.Simulate perforated Al sheet with shell 163. Confine the movement of each support in Figure 1-13 in direction x, y and z. Calculate with the throry of minimum deflection. 1.2.4.2 Mock-up for C
25、alculationMock-up for calculation is as follows:Figure 1-14 Perforated Al Sheet Mock-up1.2.4.3 Strength Calculation ResultStress bearing calculation is as followsFigure 1-15 Stres Bearing of Al Sheet-Under Design LoadGrade of Al sheet is 1200-H14 with yield strength 115 N/mm2.Max. strength bearing i
26、s 80.551N/mm2115/m115/1.2=95.8N/mm2(m is material coefficient, see BS8118-part1-3.3.3 Table3.3)Meet the requirements!1.2.5 Deflection CalculationDeflection calculation is 1.0deadload+1.0 windload.Deflection calculation is as follows:Figure 1-16 Deflection under Standard Design LoadMaximum deflection of Al sheet, frame and reinforcement bar is6.4555.88212.337mm12.337mm1355/100=13.55mm （BS8118part13.4.1table 3.4）Meet the requirements！ 友情提示：方案范本是经验性极强的领域，本范文无法思考和涵盖全面，供参考!最好找专业人士起草或审核后使用。