Joints and construction method suitable for continuous reinforced concrete pavement structure

Abstract

The invention discloses joints and a construction method suitable for the continuous reinforced concrete pavement structure. The joints include the transverse joints, the pre-cutting joints traversing well lids and the longitudinal construction joints. One transverse joint is arranged every 150 m, the width of the transverse joints ranges from 1.0 cm to 1.5 cm, and each transverse joint is divided into an upper part and a lower part, wherein the depth of the upper part of the transverse joint ranges from 5.0 cm to 8.0 cm, is filled with silicone adhesive, epoxy mortar is poured at the portions, within 8-15 cm, of the two sides of the upper part of the transverse joint, the lower part of the transverse joint is filled with a polyethylene blind-hole foam joint filling plate, and longitudinal reinforcing steel bars transversely penetrate through the joint filling plate. The depth of the pre-cutting joints traversing the well lids ranges from 3 cm to 4 cm, the width ranges from 3 mm to 5 mm, and the pre-cutting joints are filled with silicone adhesive. Transverse reinforcing steel bars at the longitudinal construction joints are connected with direct thread sleeves, and the reservation length of the transverse reinforcing steel bars is 60 cm and 20 cm. By means of the joints, the problem in the arrangement of joint of a continuous reinforced concrete pavement can be solved, and the traffic safety and comfort are improved.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and relates to a joint suitable for a continuously reinforced concrete pavement structure and a construction method. Background technique [0002] A large number of cement concrete pavements were built in my country in the 1990s. The cement concrete pavement generally needs to be provided with joints to solve the problems of thermal expansion and contraction of the cement concrete slab. Seams and slab corners are prone to defects such as emptying, mud pumping, wrong platform, and broken slabs, especially in urban roads and rainy areas, which greatly affect the service life and quality of cement concrete pavement. Since then, asphalt pavement has been mainly built throughout the country, but asphalt pavement also has many early diseases due to the action of water, and even has defects such as rutting deformation caused by high temperature and surface cracking caused by low temperature. Th...

AI Technical Summary

Problems solved by technology

In order to solve the problem of cement concrete pavement structure joints, in recent years, many areas in my country have begun to try to build continuous reinforced concrete pavement. The pavement structure can have fewer or no joints to reduce the problems of water infiltration and joint damage. , but the existing construction practice shows that if there are few or no transverse joints, there will generally be more transverse cracks, basically one every 1.0-2.0m, and the gap width of a few transverse cracks is relatively large, which will cause water seepage problems, and even There will be edge gnawing, chipping and other diseases

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