As a large country in infrastructure, the number of roads and bridges in our country is particularly large. However, the problem is that most of the bridges are the products of the 1970s and 1980s. There were not many vehicles in that era. And many old bridges are no longer suitable for so much traffic today. So many of the bridges have some hidden danger. Then let’s talk why the bridges have hidden danger and their solutions.
1.Design problem
The common problem of bridges in the seventies and eighties is the lack of steel bars. So the overall bridge is fragile and easy to crack. It is even serious to collapse.
2. Poor craft
The craft of bridge construction then was generally low. The strength of cement and the construction quality are not high. So the bridges are prone to have large cracks or honeycomb surface.
3. Maintenance
The bridges of that era generally lacked maintenance. Or they had never been reinforced or never tested. So some bridges were overloaded for a long period of time, resulting in low bridge carrying capacity.
Solutions:
1. Sticky steel reinforcement method
Pasting steel reinforcement is a more common method of reinforcement. We paste the steel plate on the tension edge or weak parts of the reinforced concrete structure by glue so that it can form an unit with the structure, thereby enhancing the bearing capacity of the beam. Adhesive steel reinforcement has many benefits. The construction method is simple. And it has impact and fatigue resistance, which is suitable for the dynamic load reinforcement of railway and highway bridges.
2. Planting steel bars reinforcement method
The partial load pressure of some bridges is big. We can take the partial planting steel bars reinforcement method, which add cast-in-place concrete beams between the adjacent beams and do the anchorage reinforcement in concrete. Here we need to use good anchorage glue. Planting steel bars reinforcement method has some advantages. For example, acid and alkali resistant, anti-heat and aging, long service time, etc., the service life of one planting can be up to 50 years, which is beneficial for the old bridge without management and operation. Once being reinforced, it can save some hidden danger.
After correct analysis of the causes of bridge problems, mastering different types of bridges and the characteristics of different problems, we can know what kind of reinforcement methods are more actual. And then according to the actual need, we choose to purchase sticky steel glue or anchorage glue. Nanjing Mankate reinforcement company provides you with good sticky steel glue and anchorage glue. It is your better choice of road and bridge reinforcement.
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Editor: Nanjing Mankate
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