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24-story residential building cantilevered design of steel tubular scaffold


With double scaffolding,Beats By Dre Headphones, within the exclusive subject, calculated by considering a two-step frame construction load of Pt,vibram five fingers outlet, steel and bamboo to climb fence to take the load of 1.5 times the original (Ps). That P-P + Ps determine steps that can be high for the erection of 34 steps. So choose 2LI2,MBTシューズ 販売店, erection of up to 22 steps, according to project the actual situation,Beats By Dre Studio, pick from five layers, each layer lO pick, pick twice. Fourth, the amount of checking to determine the erection stupid stand up after a few steps, the beams,herve leger skirts, cantilever beam. Oblique stem for checking 261. Checking beam beam must save at least Phoenix will use to vend all and sleep, in order to effectively stop to frame questions to load, due to resistance from the _ one side and the next checking Meng 1) bending strength checking a-M ... / vW a 133N / mm0 <(o] = 17On/mra., bending strength to meet the requirements of which: Y a cross-section plastic development coefficient, 2) the overall stability checking: d curse M Qin / 4, bW = 12N/mm <(a] a 170N/ram., overall stability to meet the requirements of which: e an overall stability of the factor 3) deflection checking Cw) = scratch. 44emWmax-ftq-f I + chips = 0.535cm <CA, the actual deflection is less than the allowable deflection, which; f generates a uniform load deflection, f a concentrated load produces scratch cliff. 4) The shear stress checking Tf ... = q ... / (I / S · t, a 54.5N/mUt: <[f] = l25N/Iqlm shear stress to meet the requirements of its moment of inertia of a beam rI, t an abdominal thickness, S - area of ​​the neutral axis of the moment. 5) calculation of local pressure bearing llIP] / 'tL257N/mm = <(0] l70N/min., meet the requirements, one of the concentrated load factor increased , L the length of a seat.!. checking a cantilever beam) bending strength checking a = W / A + M / rW a child 5N, Illm <(Ding) bending strength to meet the requirements. Of which: W an axial force, A cross-sectional area of ​​a steel cantilever beam. 2) weld checking 7 a Q / o. 7hEZL a l1TN/m1 refuse the West region large concrete buildings in winter plum construction difficulties, this paper illustrates in detail the specific projects-speed race down the steps about funeral issues, side residue. . China's tower construction project should be the method of winter day outdoors in the minimum cylinder wall temperature is below 0 ℃, the palm into the winter construction, low hair shall not be 5 ℃ tube wall construction. But I work in Mao Fu bottle cooling tower power plant two projects, due to start later that year, when half the height of the cylinder wall construction to the cold when it has broken the boundaries of the provisions of this winter but because of Fuxin region a long time, if this When cessation, duration chu t be adversely affected by the construction unit, construction unit will bring no small loss. We carefully research and analysis on the basis of certain experimental structure that overcomes the concrete in winter as long as the spin work in the emerging technical problems, the cooling tower wall construction can continue until the ceiling. End station of this construction, we talk about that experience, hyperbolic cooling tower engineering and construction in winter and should address several issues applied methods and measures to be introduced in winter, hoping to improve the level of concrete construction in winter helpful. I. Project Overview Fuxin Power Plant two-ling tower project is designed by the Institute of natural ventilation in Fuxin hyperbolic cooling towers, tower 40m, of which the cylinder wall for the in-situ reinforced concrete structures, pipe welding strength to meet a l2ON/mm requirements. Where f a fillet size, ΣL a weld length. 3) Shear checking f = Q / (Tls · t,) io7N/mm <If,: 126Nlmm shear to meet the requirements. 3. : Diagonal checking. , Q) is difficult stress checking a N, A-i8N/mm <(o]. Normal stress to meet the requirements, including. N an axial force, A a cross-sectional area, 2) checking the stability 'o-N ~ A a 54N / m more. <3) weld checking Tf-Nto. 7h, ~ L a 41N / m floor. <(FI '] weld strength to meet the requirements summary selection 2LI, puts up 22 steps to meet the construction requirements. V. Conclusion Jian language cantilevered scaffold has been successfully applied to 24-story residential building, the scaffolding can be reused, save money, save construction space, ideal for high-rise building construction.
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