Method for mounting bridge main tower cross beam top steel box girder segment
An installation method and technology of steel box girders, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as difficult installation of steel box girder segments and obstacles in the space position of the main tower, so as to achieve accurate lifting and lowering input effect
Inactive Publication Date: 2008-07-02
CHINA MAJOR BRIDGE ENG
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Problems solved by technology
It is difficult to install the steel box girder section on the beam top of the main tower, and its installation often has the problem of the space position of the main tower
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[0019] The arrangement of the installation equipment of the present invention is shown in Figures 1 to 3, mainly including the bracket 3 next to the pier attached to the lower beam 17, the distribution beam 2, the longitudinal slide 7, the front leg 5, and the rear leg 9 And support truss 4 and walking crane 1 etc. There are also jack 6, through-type jack 11, jack reaction force frame 12, temporary connection 13, guide chain 14, tower column 16 etc. among the figure.
[0020] Other auxiliary facilities and equipment include:
[0021] (1) When the steel box girder is transported ashore by water, supporting wharf facilities and shore transportation equipment are required.
[0022] (2) Water transportation, anchoring and positioning facilities and equipment should be provided for water erection.
[0023] (3) Temporary erection structures and installations such as walking cranes need to be equipped with horizontal transportation and vertical hoisting (tower cranes, etc.) equipme...
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The invention relates to an installation method of a steel box girder segment on girder top of main tower of a bridge, in particular to an installation method of steel box girder segment on crossbeam top of main tower of modern large-span cable-stayed bridge or suspension bridge. The master girder of extra large bridges such as large-span cable-stayed bridge and suspension bridge mainly adopts steel box girder, which is installed by the segment method. The installation method comprises the following steps of (1) installing temporal structures or walking-type hanger; (2) hanging segments of the steel box girder; (3) integrally unloading (1#+0#+1#) the steel box girder (15); and (4) hanging other standard segments of the steel box girder by the walking-type hanger. The invention can sufficiently utilize the loading capacity of the main tower of the bridge. The walking-type girder hanger for installing the standard segments of the box girder is used, as far as possible, for hanging the temporal hanging equipment on the tower pillar of the main tower, thus reducing the investment and lifting the segments of the steel box girder at accurate positions.
Description
technical field [0001] The invention relates to a method for installing a long-span cable-stayed bridge or a suspension bridge on a steel box girder section on the top of a main tower beam. Background technique [0002] If the main tower is in the water, the steel box girder section on the top of the beam of the main tower is generally directly lifted and installed by a large crane. When the main tower is on land, it can be installed by a large crawler crane, or a rotary mast crane (also suitable for use in water). The above conventional installation methods are sometimes difficult to implement due to objective reasons, such as the specification of the gondola or the crane does not meet the requirements, the shallow water depth makes it difficult for the gondola to be in place, the tilt of the main tower column collides with the boom of the crane, etc. [0003] The main girders of super-large bridges such as long-span suspension bridges and cable-stayed bridges mostly use s...
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IPC IPC(8): E01D21/00
Inventor 杜官民艾占祥尹本文郭全心廖云沼陈国祥郑震刘向阳叶李
Owner CHINA MAJOR BRIDGE ENG