Ultrahigh transition section prefabricated bent cap formwork system, bent cap prefabricating method and mounting method

Abstract

The invention discloses an ultrahigh transition section prefabricated bent cap formwork system, a bent cap prefabricating method and a mounting method. The system comprises a side formwork and a bottom formwork. A structural form of clamping the bottom formwork by the side formwork is adopted between the side formwork and the bottom formwork; the bottom formwork comprises a fixed bottom formwork and a movable bottom formwork which are connected left and right; the movable bottom formwork corresponds to the connecting position of the bottom of the bent cap and the pier stud, the inclination angle can be correspondingly adjusted according to changes of a cross slope on the top of the bent cap, and a wedge-shaped boss which is consistent with the designed cross slope of the bent cap in anglebut opposite to the pier stud in direction is formed at the connecting position of the bent cap and the pier stud. When the bent cap is connected with the pier stud, the wedge-shaped bosses are reversely adjusted to enable the cross slope of the top face of the bent cap to be consistent with a design value, and the bent cap and the pier stud are simply and quickly assembled on site. Wedge-shaped bosses with different grades are formed at the bottom of the bent cap by adjusting the gradient of the movable bottom formwork so that the system can complete prefabrication of the bent cap with various cross slope angles. The fixed bottom formwork is designed according to the standard cross slope of the bent cap so that the bent cap reinforcement cage jig frame and the positioning tool can be shared with the standard cross slope bent cap, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a prefabricated cover beam formwork, in particular to a prefabricated cover beam formwork system with a super-high gradient section, a prefabricated method and an installation method for the cover beam. Background technique [0002] At this stage, my country's road and bridge construction is developing very rapidly. In the past, the common bridge construction method was on-site pouring. With the continuous development of cities, the cast-in-place construction of bridge components in urban areas has become more and more restricted by the surrounding environmental requirements and construction conditions. Therefore, the fully prefabricated production mode of bridge component factories has been more and more widely used. The prefabricated cap beam is a main prefabricated component in the fully prefabricated assembled bridge. In road design, in order to offset the centrifugal force generated by vehicles running on curved road sect...

AI Technical Summary

Problems solved by technology

The superelevation gradient section cover beams are divided into different types because of the different top cross slopes, and there is only one superelevation transition section or even the same road on each non-standard cross slope. Therefore, the superelevation transition section cover beam formwork needs to be The cross slope of each type of cap beam is matched. If the formwork is processed separately for each type of cap beam cross slope, the construction cost will be greatly increased and a large amount of formwork storage space will be occupied, which does not meet the requirements of factory and batch prefabrication of bridge components.

However, if the prefabricated cover beams with strict quality requirements are prefabricated using low-cost simple formwork, it will be difficult to guarantee the quality of the finished product

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