High-altitude support-free segmented butt joint installation method for section steel beams
A technology of butt joint installation without brackets, which is applied in the processing of building materials, construction, and building construction. It can solve the problems of time-consuming, uneconomical, and exceeding the capacity of lifting equipment when erecting brackets, so as to shorten the installation time and ensure safety. High reliability and reduced usage cost
Pending Publication Date: 2022-06-28
SCEGC MECHANIZED CONSTR GRP COMPANY
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Problems solved by technology
[0003] Aiming at the problems existing in the prior art, the present invention provides a segmented butt joint installation method of steel girders at high altitude without supports, which effectively solves the problem in the prior art that the overall hoisting exceeds the capacity of the lifting equipment under the condition of limited space. It is time-consuming and uneconomical to assemble with erection brackets
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[0045] 1. Determine the segment size of the steel beam
[0046] The segment size of the steel beam is determined according to the actual situation on site, and priority is given to the bending resistance of the upper steel column (that is, the position close to the upper part when the steel column is placed vertically), the capacity of on-site lifting equipment, and site problems. Generally, it is divided into three sections, namely the cantilevered steel beam section on the left and right sides and the empty steel beam section in the middle. The section length of the steel beam follows the principle of indwelling construction joints, and the section position is set within 1 / 3 of the span on both sides of the steel beam.
[0047] 2. Set the hanging point (that is, the position of the lifting ring)
[0048] The cable used in this embodiment is a chain hoist, and the hanging point of the chain hoist needs to be set on the upper steel column and the free end of the cantilevered ...
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The invention discloses a profile steel beam high-altitude support-free segmented butt joint installation method. A first hanging ring and a second hanging ring are arranged at the positions, close to one ends, of a first cantilever steel beam section and a second cantilever steel beam section correspondingly; a third hoisting ring and a fourth hoisting ring are respectively arranged on a first steel column and a second steel column for fixing the steel beam; after the first cantilever steel beam section is lifted to the installation position, the other end of the first cantilever steel beam section is connected with the first steel column, and the first lifting ring and the third lifting ring are connected through a first inhaul cable; after the second cantilever steel beam section is lifted to the installation position, the other end of the second cantilever steel beam section is connected with a second steel column, and a second lifting ring and a fourth lifting ring are connected through a second inhaul cable; and after the empty filling steel beam section is hoisted to the installation position, one end is connected with one end of the first cantilever steel beam section, and the other end is connected with one end of the second cantilever steel beam section. The problems that in the prior art, under the condition that the site is limited, overall hoisting exceeds the capacity of hoisting equipment, and time is consumed for erecting and assembling a bracket, and the bracket is not economical are effectively solved.
Description
technical field [0001] The invention belongs to the technical field of building construction, and relates to a high-altitude support-free segmented butt installation method for a profiled steel beam. Background technique [0002] In the construction process of some buildings with large-span space requirements, the installation of super-long or super-heavy steel beams is often encountered. Due to the large size of the building, the hoisting machinery is often hoisted with steel beams at the periphery of the building, and the site is limited. , the hoisting radius is far. If the profiled steel beam is assembled on the ground to be lifted as a whole at one time according to the conventional method, the weight will exceed the lifting capacity of conventional equipment, and the profiled steel beam will be longer after being assembled as a whole, and the safety risk of one-time lifting is high. Docking is time-consuming and uneconomical. SUMMARY OF THE INVENTION [0003] Aimin...
Claims
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IPC IPC(8): E04G21/14E04G21/16
CPCE04G21/14E04G21/162
Inventor 韩国定欧保华詹红荀晗孟琪门俊
Owner SCEGC MECHANIZED CONSTR GRP COMPANY
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