Construction method of tire type gantry hanger beam
A gantry hanger and tire-type technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., can solve the problems that cannot meet the sequential erection requirements of bridge erecting machines, and the construction progress of bridge piers is different, so as to achieve fast construction speed and ensure construction progress , Improve the effect of efficiency and accuracy
Active Publication Date: 2017-01-11
CHINA RAILWAY SIXTH GRP CO LTD
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Problems solved by technology
However, in the urban transportation system, it involves the occupation of existing traffic roads and the demolition of existing buildings, resulting in different construction progress of bridge piers in different sections of the whole line, which cannot meet the sequential erection requirements of bridge erecting machines
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[0058] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific steps and effects of the construction method of the tire-type gantry hanger proposed according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. The description is as follows.
[0059] Please refer to shown in Fig. 1-4, the simply supported box girder tire-type gantry hanger construction method of preferred embodiment of the present invention, it mainly comprises the following steps:
[0060] Step 1: Construction preparations include:
[0061] 1) Measurement preparation
[0062] The elevation of the pier top pad 5, the position of the bolt holes of the support and the bolt holes of the upper and lower seat plates, the actual span of the pier column and the length of the box girder 2 shall be measured and checked in advance. Measure and place ...
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The invention discloses a construction method of a tire type gantry crane frame beam. The method comprises the steps that firstly, pier top padstone is cast, and support bolt holes are reserved; before erecting is carried out, temporary supporting jacking blocks are placed on the two sides of the pier top padstone, and the top face elevation of the jacking blocks is adjusted to meet the design position of supports; after the supports are mounted on a girder field in advance, box girders are discharged out of the girder field, and when the box girders are transported to the site, gantry cranes are in place in advance; the box girders are transported to the site by a girder transporting vehicle, the box girders are lifted to the corresponding positions by two tire type gantry cranes to be in place, after the two box girders of a hole are erected, reserved reinforcing steel bars of the two box girders are temporarily connected, and stability and safety of the box girders are ensured; then, the gravity type grouting manner is adopted, gaps between the lower portions of the supports and bolts are grouted, after mortar reaches the strength, accessory components like support connecting plate are dismounted, support surrounding plates are mounted, the temporary supporting jacking blocks are dismounted, and the box girders of the hole are erected. The method can meet erection of the box girders of any span, and skip erection can be achieved according to the construction progress; and the method is high in construction speed, high in safety, high in efficiency, low in cost and good in economical performance.
Description
technical field [0001] The invention relates to a construction method for erecting box girders in the field of bridges, in particular to a construction method for tire-type gantry hanger beams. Background technique [0002] Bridge erection is an important step in bridge construction. Existing box girder erection generally adopts bridge-building machines and bridge-erecting machine methods in addition to the erection method and suspension irrigation method. Bridge-building machines are commonly used in Europe, America, Japan and other countries. In my country, bridge erecting machines and truck cranes are mainly used for box girder erection. However, in the urban transportation system, it involves the occupation of existing traffic roads and the demolition of existing buildings, resulting in different construction progress of bridge piers in different sections of the whole line, which cannot meet the sequential erection requirements of bridge erecting machines. [0003] In vi...
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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 史振云唐刚余江刘伟韩金明李小虎于怀旺黄秀
Owner CHINA RAILWAY SIXTH GRP CO LTD