Prefabricated assembled UHPC side anti-collision guardrail grouting connecting structure

Abstract

The invention discloses a prefabricated assembled UHPC side anti-collision guardrail grouting connecting structure. The structure comprises a main beam wing plate with a connecting reinforcement and aUHPC anti-collision guardrail, a grouting sleeve is pre-buried inside the bottom of the UHPC anti-collision guardrail, and at least three interior shear connectors are longitudinally distributed on the inner wall of the grouting sleeve at intervals; external shear connectors corresponding to the interior shear connectors are longitudinally distributed on the outer wall of the grouting sleeve at intervals, an opening used for the connecting reinforcement to be inserted into a pouring cavity chamber is formed in the grouting sleeve, and a grouting opening located at the lower side and a pulp outlet located at the upper side are formed in the grouting sleeve; grouting materials are poured in the pouring cavity chamber to make the UHPC anti-collision guardrail connected with the main beam wing plate, by arranging the external shear connectors, the connection between the grouting sleeve and the UHPC anti-collision guardrail is achieved, through the cooperative effect among the interior shear connectors, the connecting reinforcement and the grouting materials, the grouting sleeve is integrally connected with the main beam wing plate, it is avoided that reinforcements are pre-buried inside the UHPC anti-collision guardrail, prefabrication of the UHPC anti-collision guardrail is convenient, and the structure is more applicable to industrial flow line production.

Description

Technical field [0001] The invention relates to the technical field of bridge construction structures, in particular to a prefabricated UHPC side impact guardrail grouting connection structure. Background technique [0002] In recent years, my country has actively explored and enriched green construction methods that are fast, low road interference, and quiet, vigorously advocate prefabricated construction, and actively explore the application of new materials in prefabricated buildings. The crash barrier is an important part of the bridge. The UHPC crash barrier has a simple structure, which is about 65% lighter than the traditional solid reinforced concrete crash barrier. The structure is super tough and has obvious advantages. However, the existing assembled UHPC crash barrier The connection is realized by the bottom plate bolts and the connecting steel bars embedded in the wing plate. During construction, workers need to climb behind the crash barrier to tighten the bolts. Th...

AI Technical Summary

Problems solved by technology

The crash barrier is an important part of the bridge. The structure of the UHPC crash barrier is simple, which is about 65% lighter than the traditional solid reinforced concrete crash barrier, and the structure has super toughness, which has obvious advantages. The connection is realized through the bottom plate bolts and the connecting steel bars pre-buried in the wing plate. During construction, workers need to climb over to the rear of the crash barrier to tighten the bolts. The operation is complicated and dangerous. Therefore, the development of a new connection suitable for UHPC crash barriers is very necessary

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