Seamless bridge deck expansion joint structure for road engineering

Abstract

The invention discloses a seamless bridge deck expansion joint structure for road engineering and a construction process of the seamless bridge deck expansion joint structure. The seamless bridge deck expansion joint structure for the road engineering comprises a bridge body and an expansion join, wherein concrete paving layers are arranged on the bridge body; a preserved notch is formed between two adjacent concrete paving layers; a clearance is reserved between two adjacent bridge bodies or between the bridge body and a bridge abutment; the seamless bridge deck expansion joint structure further comprises an elastic-plastic body and a backing plate; the backing plate is positioned on the bottom surface of the preserved notch for closing the clearance; the backing plate is arranged below the elastic-plastic body; the elastic-plastic body is positioned in the preserved notch for forming an elastic-plastic body expansion joint; and asphalt concrete layers are paved on the concrete paving layers and the elastic-plastic body expansion joint in a penetrating way. According to the seamless bridge deck expansion joint structure disclosed by the invention, a real seamless bridge deck can be formed; and the seamless bridge deck expansion joint structure has the advantages of higher structural safety, greater convenience in construction and convenience in replacement.

Description

Technical field [0001] The invention belongs to the technical field of expansion joints in road engineering, and in particular relates to a seamless bridge deck expansion joint structure and construction technology for road engineering, and is mainly suitable for forming seamless bridge decks in road engineering. Background technique [0002] Expansion joint device is an indispensable part of highway bridge structure, and the problem of expansion device has always been a major problem in highway traffic. According to a related statistics in the United States, although the cost of support and expansion joint only accounts for 5 percent of the total bridge cost %, but improper design, poor installation quality and lack of maintenance can cause problems in 95% of bridges. Therefore, the issue of expansion joints should arouse sufficient attention. [0003] In the prior art, the commonly used bridge expansion devices are generally installed on the bridge last, and are exposed to the a...

AI Technical Summary

Problems solved by technology

[0002] The expansion joint device is an indispensable part of the highway bridge structure, and the expansion device problem has always been a major problem in road traffic. According to a related statistics in the United States, although the cost of supports and expansion joints only accounts for 50% of the total cost of the bridge %, but can cause problems in 95% of bridges if improperly designed, poorly installed and lack of maintenance

[0005] However, the expansion joint structure in the prior art still has the following disadvantages: 1. The expansion joints are steel expansion joints and modular expansion joints. The expansion and contraction displacement of the bridge, but there is a relatively obvious phenomenon of jumping when passing, which has a greater impact on driving comfort

2. The application of seamless expansion joint (elastic-plastic expansion joint) technology is mostly limited to the reconstruction and reinforcement of old bridges with small and medium spans, and the expansion joint structure is located on the bridge deck, and the use of this type of expansion joint structure has not formed a real Although the seamless bridge deck has greatly improved the driving comfort, due to the difference in performance between the elastic-plastic structure and other bridge deck structures, it also has a certain impact on the driving comfort, and the difference in color has a negative impact on the appearance. certain influence

Images