HD 1004-1992 Mobile Access and Working Towers Made of Prefabricated Elements - Materials Dimensions Design Loads and Safety Requirements《预制组件制的移动通道和工作塔 材料 尺寸 设计.pdf
《HD 1004-1992 Mobile Access and Working Towers Made of Prefabricated Elements - Materials Dimensions Design Loads and Safety Requirements《预制组件制的移动通道和工作塔 材料 尺寸 设计.pdf》由会员分享,可在线阅读,更多相关《HD 1004-1992 Mobile Access and Working Towers Made of Prefabricated Elements - Materials Dimensions Design Loads and Safety Requirements《预制组件制的移动通道和工作塔 材料 尺寸 设计.pdf(29页珍藏版)》请在麦多课文档分享上搜索。
1、HARMONIZATION DOCUMENT DOCUMENT DHARMONISATION HARMONISIERUNGSOOKUMENT 3404583 0040694 3 HD 1004:1992 June 1992 UDC 69.057.68:621.869.352:614.8 Descriptors : Site equipment, mobile equipment, scaffolding, prefabricated elements, mechanical strength, loads, forces, design, dimensions, specifications,
2、 safety, tests English version Mobile access andworking towers made of prefabricated elements - Mater ia 1s , dinens ions, design loads and safety requirements Echafaudages roulants de service en Fahrbare Arbeitsbhnen (Fahrgerste) BlBments prefabriques - MatBriaux, aus vorgefertigten Eauteilen, dime
3、nsions, charges de calcul et Werkstoffe, Gerstebauteile, Masse, exigences de securite Lastannnahmen und sicherheitstechnische Anforderungen This Harmon CEN members which stipu Document on Up-to-date implementat tation Document was approved by CEN on 1992-05-22. are bound to comply with the CENICENEL
4、EC Internal Regulations ate the conditions for the implementation of this Harmonization national level. lists and bibliographical references concerning national on may be obtained on application to the Central Secretariat or to any CEN member. This Harmonization Document exists in the official versi
5、ons (English, French, German). CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization C
6、omit EuropQen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 6-1050 Brussels - - (cl CEN 1992 Copyright reserved to all CEN members Ref. No. HD 1004:1992 E W 3404583 0040675 5 Contents page page . 3 Tab1 es 4,O m the topmost platform 0,3 kN 2 x 0,3 kN ) Thes
7、e class numbers HD 1000:1988, table are in accordance with 1. 6.2.5.3 Selfwelght as glven (see 6.2.1) . 6.2.5.2 Vertical service load as given (see 6.2.2) 6.3 Strength of cqlete tower structure A tower structure shall be strong enou h to resi st the combination of loads, takin one ilne from each com
8、b1 nat Ion. Eccentrlclties of castor wheels have to be taken into account. A tower shall withstand all loads induced in it during erection and dismantl ing In accordance with the manufacturers i nstructlons. It shall be possible to fix platforms for erection and di smantll ng purposes wl th vertical
9、 di stances between platforms not exceeding 2,lO rn. of the five groups glven In tab 9 e I, in Its worst 6.4 Platform 6.4.1 Platforms shall be assessed with respect to selfwelght and the most unfavourable service load according to table 2. 6.4.2 When subjected to the concentrated load spec- fled in
10、table 2 line 1.2 the maximum deflection of any decking component shall not exceed 1/100th of the span of that decking component. In addltlon, In the case of decklng components with spans of 2 m or greater, the maximum deflectlon difference of loaded and unloaded decking compo- nents shall not exceed
11、 20 mn. 6.5 Guardral 1 s A guardrail, regardless of its span, shall with- stand separately (see table 2): a) a polnt load of 0.3 kN with an elastic deflec- b) a polnt load of 1,25 kN wlthout breaking or dis- ., tion of not more than 35 mn and connecting and without belng displaced from Its original
12、llne by more than 200 M at any point. Both the above loads shall be applied In the most unfavourable posltlons and at any horlzontal or downward angle. 6.6 Lateral movement The base of the tower shall be stiff In the horlzontal plane to allow relocation. This shall include outriggers and stabilizers
13、 where appro- priate. Page 6 HD 1004:1992 2.1 2.1.1 2.1.2 2.2 3404583 0040699 2 verti cal servi ce 1 oad uniformly distributed for class 2 for class 3 minimum vertical service load on structure Table 1: 3.1 3.2 Design loads on the whole structure 1 5 4,O m 1 4.0 m Group 1 2 3 4 5 Line I Kind of load
14、 sel fweight including bal 1 ast if I appl icabl e horizontal service load on level of the uppermost pl atform horizontal design load to simulate wind 1 oads resul ti ng from an inclined position of 1 %: where: 1 length of the platform Value for load as given 15 kN/mz 2, O kN/m2 5.0 kNl4 legs 0.3 kN
15、 2 x 0,3 kN O, 1 kNlm Subclause 6.2.1 6.2.2.1 6.2.2.1 6.2.2.3 6.2.3.1 6.2.3.2 6.2.4 -. 6.2.5 7 Conrpofleflts 7.1 Castor wheels 7.1.1 General Castor wheels shall be fixed to the tower in such a way that they cannot be accidentally detached. 7.1.2 Brakes Al 1 castors shall have wheel brakes. They shal
16、l have swivel brakes unless by their design they are not eccentric when locked. The brake mechanism shall be designed in such a way that it can only be unlocked by a delberate action. The brake mechanism must effectively pre- vent any rotatlon of the wheel when a horizontal force of 0,30 kN is appll
17、ed through the vertical swivel axis of the castor as close as possible above the castor housing and in the rol 1 ing direc- tion of the castor. The full value of the specified service load Is to be taken Into account when testing the castor brakes. 7.1.3 Oesign load The maximum design load of castor
18、s given by the manufacturer shall be verified by a minimum of 5 control tests. The test load shall be 3 times the maximum design load derived from table 1. One line is taken from each of the five groups In table 1 to establish the maximum design load. The brakes being locked, an Initial vertical loa
19、d of 0,50 kN Is to be applied, the plate of the fork beln taken as the origin for measurements of vertjcal displacement b) toe board at the bottom to prevent objects rolling or being pushed off the platform; c) sufficient obstruction of the space between these to mlnlmize the risk of people and larg
20、e objects falling through. NOTE : A fencing Structure can be provided capable of preventing objects as small as brlcks from falling and may be combined with guardrail and toe board or can be an additional and separate component. 7.5.2.2 Handrail It shall be possible to flx a handrail in such a posit
21、lon that its top surface is 1000 t 50 nun above the level of the platform (see figure-5). 7.5.2.3 Intermodlate guardrail It shall be possible to fix a second guardrail, such that neither the space above and between it and the underside of the principal guardrail nor the space below and between it an
22、d the top of the toe board exceed 470 nun. 7.5.2.4 Toe board It shall be possible to flx a solid toe board such that its top edge Is at least 150 mi above the ad- jacent pl atform 1 eve1 . 7.5.2.5 Fencing structures When a fencing structure Is provided, the aperture size shall not exceed 100 mm x 10
23、0 mm. 8 Assessment 8.1 General The assessment shall be made by tests andlor by calculations in accordance with EUROCOOE 3. Pendlng the publication of EUROCOOE 3 and other re1 evant European Standards, calculations shall be carried out In accordance wi th National Standards given in the Natlonal Anne
24、xes. 8.2 Assessment of stresses For the assessment of stresses in the materials of the tower, the service loads are working loads and design shall be in accordance with National Standards given in the Natlonal Annexes using calculation methods with permissible stress or load factors. 8.3 Resistance
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