Simply supported girder bridge floor continuous new construction and construction method

Abstract

The invention relates to simply supported girder bridge floor continuous new construction. The construction comprises multiple girders of a simply supported girder bridge and bridge floor plates arranged on the girders, ultra-high performance concrete connecting plates are arranged and connected between the bridge floor plates on the adjacent girders, arc-shaped steel supporting pieces located at the same height are embedded in end faces of the adjacent girders, steel tube ultra-high performance concrete segments are arranged between the arc-shaped steel supporting pieces, two ends of each steel tube ultra-high performance concrete segment are connected with end faces of the girder at corresponding side respectively, and the invention further relates to two construction methods applied to new-built simply supported girder bridge and existing simply supported girder bridge. By utilizing the ultra-high performance concrete connecting plates arranged in the simply supported girder bridge floor continuous new construction, tensile deformation in longitudinal direction of a bridge at continuous construction on bridge floor caused by girder deformation of the adjacent girders is achieved, and corrosion resistant performance is improved; and by utilizing compression resistance performances of the ultra-high performance concrete connecting plates and the steel tube ultra-high performance concrete segments, compression deformation in longitudinal direction of the bridge at the continuous construction on the bridge floor caused by the girder deformation of the adjacent girders is achieved.

Description

technical field [0001] The invention relates to a new continuous structure and construction method of a simply supported beam bridge deck, which belongs to the field of bridges. Background technique [0002] The jumping caused by the bridge expansion joints and the secondary adverse effects caused by the damage of the expansion joints (such as the additional internal force of the structure, the corrosion of the structure by water leakage, etc.) are often encountered in the actual operation of bridges at home and abroad. Tricky question. The jumping caused by the telescopic device not only has a great impact on the bridge, but also reduces the driving comfort of the driver and passengers. In addition, as the traffic flow increases day by day, the maintenance and replacement of the expansion joint device will often cause serious traffic interruptions, resulting in huge economic losses. It can be seen that it is imperative to solve a series of problems caused by bridge expans...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing technical deficiencies, the present invention provides a new continuous structure and construction method of simply supported beam bridge deck, by using the tensile properties and toughness of the ultra-high performance concrete connecting plate to realize the temperature drop load, the concrete shrinkage slow Under the effect of variable load, the deformation of the adjacent main girder will cause longitudinal bridge tensile deformation at the continuous structure of the bridge deck; the low void ratio of the ultra-high performance concrete connecting plate is used to improve its anti-corrosion performance and prolong its service life

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