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1、生命繩試驗方案Test Plan of Life Line1. 編制說明Introduction根據鋼結構工程施工安全的需要,確保施工人員在高空作業行走安全,Team A 鋼結構區域2M及2M以上施工區域需搭設生命線。生命線擬定每個節間范圍內設兩名作業人員。每名作業人員按0.7KN計。As per requirements of safety work during installation of steel, life line should be fixed at working areas that is higher than 2 meters (included 2 meters)
2、in Team A to ensure the safety of workmen at height. Designate two workmen in every section of life line. Take each workman for 0.7 KN when calculating.2. 技術要求Technical Requirement利用已有鋼柱、鋼梁,采用捆綁。卡環固定在柱兩端,設置不高于1500M,9.3鋼絲繩。生命線的綁扎不得少于三個鎖扣,同時為了確保生命線處于拉緊狀態,一段必須安裝一個花籃螺絲,用來調節松緊度。為了減少鋼絲繩撓度并編制計算長度,沿線按不大于800
3、0設置一個中間立桿。Use steel columns, beams when binding. Clasp will be fixed at the ends of column. Steel wire of 19.3, which is lower than 1500 meters, will be equipped. In order to ensure the life line is stressed, use at least three turn buckle to adjust the tightness when binding the life line. To decre
4、ase the deflection of steel wire and calculate the length, set an upright pole which is less than 8000.3. 搭設步驟Steps of Fixing1) 生命線:繩扣、花籃螺絲等材料必須用正規廠家并經TOYO檢查合格后的產品。Life line: materials such as cord lock and turn buckle manufactured by qualified manufacturers should get inspected and approved by TOYO
5、.2) 生命線必須由持有有效證件的架子工搭設。Life line should be fixed by scaffold workers who has effective certificate.3) 生命線搭設完畢,必須經TOYO檢驗,并在第一次使用前做沖擊試驗,合格后掛牌使用。When the life line is installed, inspection should be performed by TOYO. Execute impact experiment before initial usage. Hang tag if qualified.4) 在使用周期內,必須經常維
6、護檢查。發現問題及時處理。During using period, regular maintenance and inspection should be carried out. Solve problem timely.5) 對重復搭設使用的生命線必須仔細檢查夾頭、鋼絲繩的磨損情況。如磨損情況超出規定標準,應及時更換。For repeatedly used life line, check the wearing condition of collets, steel wires carefully. If wearing exceeds the allowable range of s
7、pecifications, change should be made for worn parts.4. 計算1) 鋼絲繩計算根據立柱間距,考慮鋼柱頂部1kN的水平荷載,4kN豎向荷載,荷載示意如下圖所示(單位:kN)According to the distance between posts, and 1kN horizontal load and 4kN vertical load on top of post, see below:計算結果 Calculation result:應力比及節點反力分別如下圖所示:Stress ratio and reaction force on c
8、onnection see below: 應力比圖 節點反力圖Stress ratio diagram Reaction force diagram由上圖可知,最大應力比為0.91<1.0,滿足規范要求。From the above figure, we know that the Max. stress ratio is 0.91<1.0,which meets the design requirement.2)焊縫及螺栓驗算 Calculation of weld seams and bolt.焊縫驗算 Calculation of weld seams由節點反力圖,得知最大節
9、點反力X、Z方向分別為3.4kN、3.5kNFrom the reaction force diagram, we know that the Max. force on X and Z direction is 3.4kN、3.5kN.L63×5角鋼與圓鋼柱角焊縫連接,采用雙面角焊縫,焊縫高度4mm,長度50mm,則L63x5 angle is connected to tube post by double side fillet welding with height of 4mm and length of 63mm, so =13.5MPa<160MPa (滿足要求。
10、which meets the design requirement.)螺栓驗算 Calculation of bolt.角鋼另一側加設一連接角鋼,連接角鋼與原角鋼間采用一個普通C級螺栓M12連接,其受剪承載力設計值為14.7kN>,滿足要求。The two angles will be connected by another angle and a common C class bolt M12, the designed bearing shear force is 14.7kN>, which meets the design requirement.生命繩驗算 Calcu
11、lation of life line取生命繩直徑9.3mm,其抗拉強度為1670MPa,則生命繩承受拉力為(3.14×9.32)÷4×1670113384.07N113.384kNThe diameter of life line is 9.3mm, and tensile strength is 1670MPa, with the safety coefficient of 3, so the bearing tensile force is (3.14×9.32)÷4×1670113384.07N113.384kN設懸掉重物時,
12、鋼絲繩與水平方向夾角為3度,則其能承受的豎向重量為113.384×2×sin(3)=32kN,按一個操作工人1.5kN重量,取8倍安全系數,理論上可滿足2人施工安全要求(計算式:2.6,取整數為2)。When lifting a heavy load, and an angle of 3 with horizontal direction, therefore the vertical bearing capacity would be 113.384×2×sin(3)=32kN,suppose 1.5kN for each operator, take
13、 3 as safety coefficient and 1.4 as dynamic load coefficient, the bearing capacity meets the design requirement when 5 workmen operate at the same time (calculation formula: 2.6, 2.6 means 2 operators).5. 完驗方法Inspection Method在現場實地進行試驗。具體方法為:Perform experiment at site. See the method below:1) 準備2個1K
14、N的沙袋,用吊機懸掛在高于3米高的部位(繩子打活結),在重物下方設置生命繩,并將沙袋用安全帶系在生命繩上,如下圖所示:Prepare two sand bags. Use crane hook to hang up the bags at the height of about three meters (tie slipknot for line), set body harness under heavy object. Tie sand bags to life line with body harness. See the illustration below:2) 在進行試驗前,拉好
15、警界繩,人員遠離試驗區域至少6米以上;Before experiment, set warning line. Personnel should be at least 6 meters away from experiment area.3) 試驗時,地面人員牽引繩索,拉開活結,使其墜落,使之產生模擬沖擊力。試驗結果以兩端花籃螺栓不發生明顯變形,鋼絲繩不斷裂為合格。When performing experiment, personnel on ground pull the rope, release the slipknot to cause the sand bags fall from height. This will simulate the Impact force. If the two ends of turn buckle has no obvious defo
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