A method of installing prefabricated beams in a restricted height area
A prefabricated beam and equipment installation technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., can solve the problems of insufficient safety distance between the boom and high-voltage lines, inconvenient installation of prefabricated beams, etc., and achieve the effect of insufficient installation headroom
Active Publication Date: 2021-08-24
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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Problems solved by technology
However, for some bridge construction locations, there are 220KV overhead high-voltage lines above the top of the bridge pier. Usually, the height of the high-voltage line is about 20m from the ground, and the minimum distance between the top of the beam and the high-voltage line is 12.56m. The operating space is less than 5m, forming a height-limited area. When the prefabricated girder adopts conventional lifting operations, the safety distance between the boom and the high-voltage line is seriously insufficient due to the limitation of the height-limited area, which makes the installation of the prefabricated beam inconvenient.
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or t...
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The invention provides a method for installing prefabricated beams in a height-limited area, which includes the steps of equipment installation, hoisting of prefabricated beams, longitudinal transportation of prefabricated beams, horizontal transportation of prefabricated beams and beam dropping. In this method of installing prefabricated beams in the height-limited area, the longitudinal running track of the temporary support and the transverse slideway on the pier are set as the prefabricated beam transportation channel, so that the hoisting area can be set at a certain distance from the height-limited area, and then pass through the track The three-way movement of the flat car longitudinal movement, dragging lateral movement, and vertical movement of the falling beam realizes the installation of prefabricated beams in the height limit area, and successfully solves the problem of insufficient clearance height for prefabricated beam installation.
Description
technical field [0001] The invention relates to a method for installing a prefabricated beam, in particular to a method for installing a prefabricated beam in a height-limited area. Background technique [0002] In the installation of prefabricated beams in the prior art, a crane is usually used to hoist the prefabricated beams to the top of the pier for assembly. However, for some bridge construction locations, there are 220KV overhead high-voltage lines above the top of the bridge pier. Usually, the height of the high-voltage line is about 20m from the ground, and the minimum distance between the top of the beam and the high-voltage line is 12.56m. The operating space is less than 5m, forming a height-limited area. When prefabricated beams are hoisted conventionally, due to the limitation of the height-limited area, the safety distance between the boom and the high-voltage line is seriously insufficient, resulting in inconvenient installation of prefabricated beams. Cont...
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IPC IPC(8): E01D21/06
CPCE01D21/06
Inventor 李莘哲周妤莲李家柱卢垚潘邦群魏华吕中玉李雪芬王振琦曹杨
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD