Reinforcing method of circular culvert

Abstract

The invention discloses a reinforcing method of a circular culvert. The method includes the following steps of arranging a lining pipe in the circular culvert, wherein a plurality of HDPE winding reinforcing pipes are sequentially connected and moved into the circular culvert to form the lining pipe, and an annular cavity is formed between the lining pipe and the circular culvert; arranging a material conveying pipe and an exhaust pipe, wherein the material conveying pipe and the exhaust pipe extend into the annular cavity; closing the annular cavity, wherein a first blocking end wall for closing one end of the annular cavity is constructed at the water inlet of the circular culvert, and a second blocking end wall for closing the other end of the annular cavity is constructed at the water outlet of the circular culvert; arranging an anti-leakage annular steel belt and a steel belt expansion device at the joint of every two adjacent HDPE winding reinforcing pipes, and filling the annular cavity with foamed concrete through the material conveying pipe to form a filling reinforcing layer. By means of the reinforcing method, durability repair of the circular culvert can be achieved; by enlarging the sectional area of a culvert bearing component, the culvert bearing capacity is improved.

Description

technical field [0001] The invention belongs to the technical field of round pipe culvert reinforcement, and in particular relates to a round pipe culvert reinforcement method. Background technique [0002] The number of culvert projects accounts for more than 50% of the total number of highway bridges and culverts. According to statistics, in plain areas, there are 3 to 5 culverts per kilometer; in mountainous and hilly areas, there are an average of 6 to 8 culverts per kilometer. With the increase of the operating life of the culvert, under the influence of factors such as environment and load, some reinforced concrete circular pipe culvert joints will have concrete spalling and cracking to varying degrees; When uniformly deformed, problems such as pipe joint detachment and misaligned teeth often occur, which in turn lead to culvert leakage and erosion, affecting the normal use and long-term performance of the culvert. Due to the humid environment and more or less corros...

AI Technical Summary

Problems solved by technology

However, there is still a lack of feasible repair methods for reinforced concrete circular pipe culverts and corrugated steel pipe culverts

In fact, no matter for reinforced concrete slab concealed culverts, reinforced concrete circular pipe culverts or corrugated steel pipe culverts, if the repair and reinforcement plan is adopted to excavate the subgrade to replace or reinforce damaged components, the normal traffic of the road may be affected for the heavy traffic section. Sometimes it is necessary to build temporary access roads; for culverts with a relatively high fill height, if the culvert top and culvert side roadbed are excavated, the construction will be more difficult and costly

Images