The special hanger for the construction of the post-cast flange plate of the sound barrier T-beam and its application method

Abstract

The invention discloses a special hanging frame for construction of a post-casting flange plate of a sound barrier T beam and a using method thereof. The right side of a lower beam is provided with a column; a long inclined beam and a short inclined beam are arranged on the bilateral sides of the column respectively to be fixed at two ends of the lower beam respectively; the right end of the lower beam is provided with a short turnbuckle; the left end of the lower beam is provided with a long turnbuckle; a left adjusting screw and a right adjusting screw are arranged at the lower beam positions which are located on the bilateral sides of the column respectively. During usage, the special hanging frame is placed on a prefabricated steel rod to be fixed on a beam body reserved steel plate through the short turnbuckle and connected with an operating platform through the long turnbuckle; the left adjusting screw is connected with a left supporting truss and a left adjusting rod, a right adjusting rod is fixed on a right supporting truss, a supporting beam is laid between the left adjusting rod and the right adjusting rod, and a formwork is laid on the supporting beam; concrete placing is performed through a C55 high performance pump. According to the special hanging frame for the construction of the post-casting flange plate of the sound barrier T beam and the using method thereof, the normal operation of a bridge girder erection machine can be ensured, flange plate concrete can be poured after the construction, and accordingly construction matching operators are less, the efficiency is high, the construction period is effectively shortened, and the cost is reduced.

Description

technical field [0001] The invention relates to a special hanger for a post-cast flange plate and a use method thereof, in particular to a special hanger for the construction of a sound barrier T-beam post-cast flange plate and a use method thereof, belonging to the field of bridge construction. Background technique [0002] With the rapid development of railway speed and urban light rail train construction, many railways shuttle between urban areas and towns with densely populated populations, and some light rail trains even pass directly through urban residential areas. The noise from the trains has seriously affected the normal working and living environment of nearby residents. Faced with this series of problems. In November 2012, China Railway Consulting Institute released and implemented the construction drawings of Tongqiao (2012) 2109 "Prefabricated Post-tensioning Simply Supported T-beam Sound Barrier for Passenger and Freight Collinear Railway with a Speed ​​of 16...

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 girder 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. Hidden dangers; in the erection process, no matter whether it is the 165 railway bridge erecting machine, the 168 or 180 road-rail dual-purpose bridge erecting machine, due to the restrictions of the rear legs and the inverted gantry, it is impossible to realize the inverted installation and erection Bridge crane beam feeding operation

Therefore, it is stipulated in the design that part of the flange bearing the sound barrier (1350mm part) adopts post-casting construction flange. At the same time, due to the limitation of the construction period, how to consider not affecting the normal operation of the bridge erecting machine, and how to construct the unprefabricated flange beyond the limit plate, it is particularly important. At present, there is no ideal post-cast flange plate construction method or special auxiliary equipment for construction.

Images