Method for installing and precontrolling high-strength bolts with complicated space structure
A technology of high-strength bolts and spatial structures, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of low construction efficiency, poor interchangeability of connecting plates, and large number of hole groups, so as to reduce construction costs and safety risks. , to ensure accuracy and efficiency, the effect of simple operation methods
Inactive Publication Date: 2013-11-27
CHINA 22MCC GROUP CORP
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Problems solved by technology
The disadvantages of this mode of operation are: 1. There are many spare parts, high-altitude workload, low construction efficiency, and great safety hazards; 2. Due to the complex space structure, large number of hole groups and high installation accuracy requirements, high-strength bolts pass through holes. 3. Due to too many connecting plates, the machining accuracy of the bolt holes is low, the interchangeability of the connecting plates is poor, and the installation efficiency is low
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[0018] The present invention will be further described below in conjunction with the accompanying drawings.
[0019] The invention discloses a method for pre-controlling the installation of high-strength bolts with complex spatial structures. The installation technology is suitable for the overall installation of the steel structure of the CDQ body and other high-strength bolts with porous groups. The parts used in this method are: connecting plate 5, high-strength bolt 11. The specific steps are:
[0020] Selecting the connecting plate: select the connecting plate with the same specification and model, and carry out a set of centering drilling on the connecting plate with the same specification and model with a fixed abrasive tool. The drilling 6 holes on the connecting plate 5 are equally spaced. The connecting plate 5 that does not have a complete set of matching drills needs to be drilled with imported hollow drills to ensure the accuracy and efficiency of drilling.
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The invention relates to a method for installing and precontrolling high-strength bolts with a complicated space structure. The method comprises the steps of: selecting connecting plates with the same specification and model, and carrying out alignment drilling on the connecting plates with the same specification and model in a complete set by a fixed mould; assembling a plurality of connecting elements into a mounting unit on the ground by the connecting plates and temporary installation bolts on the ground, lifting the whole mounting unit in position, adjusting and welding; after welding, sequentially replacing the temporary installation bolts by the high-strength bolts, and screwing and fixing the high-strength bolts. A method of firstly welding and then installing the elements in a traditional mode is changed; the method provided by the invention is simple in operation, reduces the times of overhead installation and hoisting, improves the construction efficiency, and reduces the construction cost and safety risk. The connecting plates are cut in a precise or semi-automatic way, and the alignment drilling is carried out on the connecting plates with the same specification and model in the complete set by the fixed mould, so that drilling accuracy and efficiency are guaranteed, the hole passing rate of the high-strength bolts can be further increased, and the connecting plates with the same specification and model have interchangeability.
Description
technical field [0001] The invention relates to a method for pre-installation control of high-strength bolts for CDQ body steel structures and other complex space structures. Background technique [0002] The steel structure of the CDQ body is mostly connected by high-strength bolts, and the methods used in the past are: according to the actual drilling method, assembly and assembly drilling method, and pre-installation method. The mode of these operation methods is: firstly weld components such as connecting short beams and columns together, drill bolt holes one by one on the connecting plates, and then work at heights to connect the short beams and long beams through connecting plates and high-strength bolts. The disadvantages of this mode of operation are: 1. There are many spare parts, high-altitude workload, low construction efficiency, and great safety hazards; 2. Due to the complex space structure, large number of hole groups and high installation accuracy requirement...
Claims
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IPC IPC(8): B23P11/00
Inventor 王明秀于国印
Owner CHINA 22MCC GROUP CORP