Pad stone and pre-buried bolt hole forming device synchronously constructed with bridge pier caps

Abstract

The invention discloses a pad stone and pre-buried bolt hole forming device synchronously constructed with bridge pier caps. Two pieces of angle steel are arranged on a pier top cap formwork, a support pad stone formwork is arranged on the two pieces of angle steel, adjustable angle steel is arranged on the support pad stone formwork, and the adjustable angle steel is provided with rubber pipes used for forming pre-buried bolt holes. The device is simple in structure, convenient and quick to operate and safe to use. The problem that support pad stone and the pier caps are poured and formed simultaneously is effectively solved. Meanwhile, the problem that support reserved bolt holes are reserved by using PVC pipes and accordingly the precision is not easy to control is solved, and the problems of rework, trimming and the like of support bolt hole reserved channels are avoided; the cycle index of each model can reach 100 or larger, and the pre-buried bolt holes are safer, quicker and more reliable than pad stone poured by common models and reserved bolt holes; materials are saved, the scaffold and machine investment cost is reduced when the pad stone is independently poured, the construction cost is reduced, and the labor productivity is improved.

Description

technical field [0001] The invention relates to a pad stone and pre-embedded bolt hole forming device which is constructed synchronously with bridge pier caps. Background technique [0002] With the continuous increase of the scale of infrastructure construction in our country, the construction of new roads and railways is increasing day by day. At present, the newly added railway and road bridges mainly adopt support structures, and in order to save land, the proportion of bridges in the engineering field is increasing. Large, before the supporting pad stone and pier cap are usually constructed step by step, the bolt holes of the pad stone support are reserved with PVC pipes, the supporting pad stone and pier cap concrete cannot be poured synchronously, the construction efficiency is low, the construction cost is high, and the safety factor is low. At the same time, the construction period is seriously affected, and the precision required by the specification and design can...

AI Technical Summary

Problems solved by technology

[0002] With the continuous increase of the scale of infrastructure construction in our country, the construction of new roads and railways is increasing day by day. At present, the newly added railway and road bridges mainly adopt support structures, and in order to save land, the proportion of bridges in the engineering field is increasing. Large, before the supporting pad stone and pier cap are usually constructed step by step, the bolt holes of the pad stone support are reserved with PVC pipes, the supporting pad stone and pier cap concrete cannot be poured synchronously, the construction efficiency is low, the construction cost is high, and the safety factor is low. At the same time, it seriously affects the construction period, cannot meet the specifications and design requirements, and increases the probability of rework

[0003] In the prior art, when the pier top pier and bolt holes of engineering bridge piers are pre-embedded, due to the small volume and large number of pier top support pad stones, especially on the curve, it is difficult to control the precision of the pre-embedded bolt holes.

Under normal circumstances, the concrete grades of the pad stones and pier caps are inconsistent. Usually, the pad stones are constructed after the construction of the pier caps is completed. Therefore, when constructing the top of the pier, the pre-embedded bolt holes are generally pre-embedded with PVC pipes, and the scaffolding of the pedestrian passageway on the pier body has been removed, and mechanical equipment such as cranes and concrete pump trucks need to be reorganized. The erection of scaffolding will lead to a lot of idle work, repeated work, and low efficiency, and the embedded precision and appearance quality of bolt holes cannot meet the specifications and design requirements, especially on curves, which will lead to a lot of rework and re-drilling of support bolt holes

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