1、 TIA STANDARD Structural Standards for Steel Gin Poles Used for Installation of Antenna Towers and Antenna Supporting Structures TIA-1019 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA-1019 2004 App
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7、f the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-4860, formulated under the cognizance of the TIA TR-14.7 Subcommittee on Structural Standards for Steel Antenna
8、 Towers and Antenna Supporting Structures.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING P
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22、 i Structural Standards for Steel Gin Poles Used for the Installation of Antenna and Antenna Supporting Structures CONTENTS History.iii OBJECTIVE iii SCOPEiii 1.0 GENERAL 1 1.1 Definitions: 1 1.2 Referenced Standards: . 3 2.0 GIN POLE OPERATION AND USE . 4 2.1 Scope. 4 2.2 Gin Pole .4 3.0 LOADS . 10
23、 3.1 Scope. 10 3.2 Classification of Gin Poles 10 3.3 Combination of Loads 10 4.0 ANALYSIS 15 4.1 Scope. 15 This section defines minimum acceptable analysis methods to be used for gin pole design and load chart development. 15 4.2 Analysis Models . 15 4.3 Displacement Effects 15 5.0 DESIGN . 16 5.1
24、Scope. 16 5.2 Design Method . 16 5.3 Effective Slenderness Ratios for Compression Members 16 5.4 Connections . 17 5.5 Rooster Head . 18 6.0 RIGGING EQUIPMENT 19 6.1 Scope 19 6.2 Rigging Equipment Strength Requirements . 19 6.3 Inspection. 20 6.4 Wire Rope Requirements . 20 6.5 Wire Rope End Connecti
25、ons 20 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-1019 ii6.6 Chains 20 6.7 Hooks and Shackles. 20 7.0 LOAD CHART 21 7.1 Scope. 21 7.2 Standard Gin Pole Chart 21 7.3 Special Engi
26、neered Lift 24 8.0 MANUFACTURING 27 8.1 Scope. 27 8.2 Steel. 27 8.3 Test Reports. 27 8.4 Fabrication . 27 8.5 Straightness . 27 8.6 Finish 27 8.7 Identification . 27 9.0 INSPECTION . 28 9.1 Field Tolerances. 28 9.2 Inspection. 28 10.0 REPAIR AND MODIFICATION . 28 PROCUREMENT AND USER GUIDELINES 29 G
27、UIDE FOR ENGINEERING DESIGN .30 B1.0 SCOPE 30 B2.0 GIN POLE CAPACITY . 30 B2.1 Gin Pole Analytical Response 30 B2.2 Gin Pole Analytical Capacity of Individual Members 31 B2.3 Gin Pole Overall Stability Check 31 B3.0 GIN POLE CRITICAL LOAD CAPACITY . 32 B3.1.1 Considerations for Gin Pole Critical Loa
28、d Capacity 32 B3.1.2 Overall Effective Length Factor Dimensionless Ratio . 33 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-1019 iii History The design and development of steel gin
29、 poles for tower erection has evolved from a combination of sound engineering principles, judgment, and erection experience, but has been without the benefit of uniform design standards. The following two standards, AISC “Guide for the Analysis of Guy and Stiffleg Derricks” 1974, and the “Specificat
30、ion for Offshore Cranes”, API Specification 2C Fifth Edition, April 1995, are specialized standards offering guidelines for design and use of derrick and offshore cranes. Many aspects of these standards and guides are relevant to gin poles but they do not fully address all concerns unique to gin pol
31、e support and loading conditions. In addition to these referenced standards specific research along with lab and field testing were performed to develop this standard. OBJECTIVE The objective of this standard is to provide minimum criteria for design and use of steel gin poles for installation of an
32、tennas and antenna supporting structures. The information contained in this standard was obtained from sources as referenced and noted herein and represents the accepted industry practices for minimum standards for the design of steel gin poles used for the installation of antennas and antenna suppo
33、rting structures. While this standard is believed to be accurate, a licensed professional engineer should not rely upon this information for any specific application without competent professional examination and verification of its accuracy, suitability, and applicability. This standard is not inte
34、nded to cover all conditions which could exist in a particular situation. This standard covers the use of a cantilever gin pole in the vertical position, or in a near vertical position, only. SCOPE This standard describes the requirements for design of steel gin poles that are used for the installat
35、ion of antennas, towers and antenna supporting structures. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Electronic Industries Alliance Provided by IHS under license with EIA
36、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-1019 1 1.0 GENERAL 1.1 Definitions: ASD: (Allowable Stress Design) is a method of analysis in which the design strength of the structure is equivalent to its ultimate strength divided by a specified factor of safe
37、ty. Basket Slings: are slings attached to the bottom of the gin pole, providing vertical support. Bridle: the upper most support point of the gin pole that attaches to the structure. This can also be referenced as the collar. Bridle Support: the upper support that restricts the gin pole from moving
38、in any horizontal direction. Cantilever: the projection of the gin pole above the bridle. Competent Person: one who is capable of identifying existing and predictable hazards, which are hazardous, or dangerous to employees and who has the authorization to take prompt corrective measures to eliminate
39、 them. Engineered Lift: a lift outside the limits specified by a specific load chart prepared by an engineer. Free Body Diagram: (FBD) a representation of an object in equilibrium, showing external forces, moments and support reactions. Gin Pole: a device unique to the telecommunications industry us
40、ed to raise successive sections of tower steel, antennas or equipment into position. This temporary device allows headroom above the highest fixed point of the tower or structure. Gross Load: the total load to be lifted. This includes the weight of the lifted object, headache ball, the load line, ta
41、g line, and any other attachments. Headache Ball: a counterweight attached to the end of the load line to return the load line to the ground. Impact Load: a dynamic condition to account for a momentary vertical acceleration or braking of the load. Jump Line: a wire rope used to raise and lower the g
42、in pole. Load Chart: a chart used to determine the lifting capacities of the gin pole under specified parameters. Load Line: a wire rope used to raise and lower the load. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permit
43、ted without license from IHS-,-,-TIA-1019 2Load Line Restraint: Is a restraint that considers that the load line running down through the middle of the gin pole is restrained from moving in the lateral9horizontal to the ground) direction during the lift and in particular when the top of the gin pole
44、 begins to deflect laterally during a lift. LRFD: (Load it is the responsibility of the user to verify, by an appropriate AISC defined method, bolt torques for the actual application. Size A325 Bolt Torque (Ft.-Lbs.) 3/4” 100 7/8” 175 1” 250 1 1/8” 325 Above 1 1/8” 350 (or, a reasonable physical lim
45、it for field tightening) Note: It is the intent of this standard not to allow reuse of bolts less than inch in diameter. If a bolt smaller than inch is to be reused the engineer must specify an appropriate procedure and test for reuse. 5.4.1 Nut Locking Bolts, unless fully tensioned in accordance wi
46、th AISC requirements, shall be provided with a nut-locking device. 5.4.2 Bearing Type Connections Bolts tightened to a snug-tight condition are permissible for use in bearing-type connections. Bearing-type connections shall not be used with oversize or slotted holes. 5.4.3 Minimum Connection Tension
47、 Capacity The connections at ends of tension or compression members shall have sufficient tensile capacity to develop the force due to the design load, but not be less than 50% of the members compression capacity. 5.4.4 Welding Welded connections shall conform to the design requirements of the “Amer
48、ican Welding Society Structural Welding Code - Steel” AWS D1.1-2000. 5.5 Rooster Head The design for the rooster head assembly shall be for the load combinations specified in 3.3 along with the following system component considerations: a. The strength capacity of the sheave assembly shall equal or
49、exceed the strength capacity of the wire rope to be used with the sheave. The sheave manufacturer shall be consulted for the type of bearing to be used depending on the intended load lift weight and line speed. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitt
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