Special bracket for construction of whole bilateral post-poured flange plate and application method thereof

Abstract

The invention provides a special bracket for construction of a whole bilateral post-poured flange plate. A connection beam and a main beam are connected with a supporting column, a long inclined tension brace, a short inclined tension brace and a hanging column respectively; the hanging column is hinged to a reinforcing plate and is connected with a bottom template; a lateral template and a top template are mounted on the bottom template; the bottom template is fixedly connected with the main beam through a long hanging strap; the top template is fixedly connected with the main beam through a short hanging strap to form plane brackets; a stable whole bracket is formed between the plane brackets through the connection and fixation of an upper pull rod and a lower pull rod. The special bracket provided by the invention can be used for guaranteeing the whole walking of the bracket; the counter weight does not need to be balanced in a construction process, and a steel plate does not need to be pre-embedded on a beam surface when a T-shaped beam is prefabricated; the whole body does not need to be detached in a walling process, and the construction of the post-poured flange plate of a single-line railway can be rapidly finished; template closing and template detachment can be finished on the left and right sides at the same time; the special bracket is light in weight, low in cost, simple to machine and convenient to walk. In the cost ruction process, the quantity of matching operators is less and the efficiency is high; the construction duration is effectively shortened, the construction cost is reduced and the construction quality is improved; meanwhile, the special bracket is safe and reliable.

Description

technical field [0001] The invention relates to a post-cast flange plate construction special support and a use method, in particular to a single-track railway sound barrier T-beam integral double-sided post-cast flange plate construction special support and a use method, belonging to the field of bridge construction. Background technique [0002] With the rapid development of railway construction in recent years, many railways need to shuttle between cities and towns with densely populated populations. The noise from the trains seriously affects the normal working and living environment of nearby residents. Faced with this series of problems. In November 2012, the China Railway Consulting Institute released and implemented the construction drawings of Tongqiao (2012) 2109 "Prefabricated Post-tensioning Simply Supported T Beams (with Sound Barriers) for the Passenger and Freight Collinear Railway at a Speed ​​of 200 Km / h". The main difference between Tongqiao (2012) 2109 an...

AI Technical Summary

Problems solved by technology

The main difference between Tongqiao (2012) 2109 and the previous construction of Tongqiao (2012) 2101 is that the post-casting part of the bridge deck is 1350mm longer. If the beam is prefabricated as a whole, there are many construction problems: it is difficult to assemble the formwork; the finished product The center of gravity of the beam is seriously shifted from the web, so it cannot be bundled, hoisted and stored on site; in the transportation link, due to the shift of the center of gravity of the beam, loading, unloading and bundling are extremely difficult, and cause unbalanced loading of the beam transport vehicle, which increases safety. Therefore, it is stipulated in the design that part of the flange bearing the sound barrier (1350mm part) adopts post-cast construction flange, combined with the characteristics of the newly built 200 km / h passenger and freight single-track railway prefabricated post-tensioned T-beam bridge; the width of the beam surface is only 3.2m, the currently used separate unilateral support requires counterweight on the inside of the support or pre-embeds steel plates on the beam surface to balance the support when the T beam is prefabricated. Due to the limited width of the beam surface, a separate unilateral support with heavy weight is used There is a lot of construction interference, a lot of demolition and transfer materials, and the site is messy. The use of pre-embedded steel plate separation single-sided support construction increases the workload. In order to avoid the problem of counterweight and increased workload during construction, and is limited by the construction period, the design has no counterweight. And rapid construction support without pre-embedded steel plates is a technical problem encountered by road and bridge construction personnel

Since the passenger dedicated line has only started to develop in recent years, the construction technology for the post-cast flange plate is not mature enough, especially the single-line post-cast flange plate is relatively rare, although various methods are used for the current construction. construction, but there are still few construction supports that can really achieve low cost, fast construction speed, convenient operation, and safe construction

At present, there is no ideal single-track railway sound barrier T-beam post-cast flange construction method or special auxiliary equipment available for use

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