A construction method for rapid frame change of 900t concrete box girder of high-speed railway
A technology of concrete box girders and construction methods, applied in bridges, bridge maintenance, bridge reinforcement, etc., can solve many technically difficult problems, and achieve the effect of good adaptability and low comprehensive cost
Active Publication Date: 2017-12-29
CHINA RAILWAYS CORPORATION +1
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Problems solved by technology
However, if it is a high-speed railway concrete box girder, the situation is quite different. The weight of the girder body is nearly 900 tons. Considering the limited clearance of key points for interrupting traffic, the speed of changing the girder frame should be fast, regardless of equipment requirements and site Requirements, on-site hoisting and installation requirements, etc., are quite different from the above-mentioned existing ordinary railway bridge construction, and the technical difficulty is much greater
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[0029] Attached below Figure 1-7 The invention is described in further detail with specific embodiments:
[0030] as attached Figure 1-7 A quick frame change construction method for a 900t concrete box girder of a high-speed railway is shown, which includes the following construction steps:
[0031] Step 1: Carry out the installation and layout of the construction structure and equipment for on-site replacement;
[0032] Set up the support structure of the cast-in-place concrete box girder 09 on the side of the temporary repair steel beam 07 of the frame hole to be replaced and parallel to the longitudinal axis of the bridge; the support structure of the cast-in-place concrete box girder 09 includes Two cast-in-place beam side buttresses 05 and cast-in-place beam support beams 06 erected on the two cast-in-place beam side buttresses 05;
[0033] Two trestle beams 03 crossing the left and right sides of the bridge hole are set up vertically to the longitudinal axis of th...
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The invention relates to a rapid beam-replacing construction method for a high speed railway 900 t concrete box beam. The construction method comprises the steps that an on-site beam-replacing construction structure and equipment are installed and arranged; 900 t cast-in-place concrete box beam is poured on the beam-replacing construction structure; after a new 900 t concrete box beam is manufactured on a cast-in-place support on the bridge hole side, beam-placing construction for a steel beam repaired temporarily and urgently is started to be carried out on the beam and a bridge hole, a transverse moving trolley moves on an erected trestle beam, and therefore replacement for the cast-in-place concrete box beam and the steel beam repaired temporarily and urgently is achieved. The rapid beam-replacing construction method for the high speed railway 900 t concrete box beam can well adapt to the on-site terrain environment, operation can be carried out on multiple hole bridges at the same time, the phenomenon that 900 t hoisting equipment is adopted on the construction site is effectively avoided, the beam-replacing construction can be achieved in a short time safely and reliably, and the comprehensive cost is low.
Description
technical field [0001] The invention relates to a construction method for fast frame replacement of concrete box girders, in particular to a construction method suitable for use next to a bridge hole when a 900t concrete box girder of a high-speed railway in my country is damaged by a disaster and collapsed, and the steel girder is used for emergency repair to ensure that the line is temporarily opened to traffic. After the new concrete box girder is manufactured, the rapid replacement of the repaired steel girder is a rapid construction technology to achieve permanent repair of the bridge. Background technique [0002] The concrete simply supported beams of existing ordinary railways are mostly standardized T beams, and the weight of a 32-meter beam is about 150 tons. In the construction of replacing the old railway beams, the new beams are mostly prefabricated by the bridge factory and passed through the railway. Or road transport to the beam replacement site, and then use ...
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IPC IPC(8): E01D22/00
Inventor 张耀辉王海林陈士通徐光兴孙志星赵存宝彭兴山
Owner CHINA RAILWAYS CORPORATION