Nanjing Mankate has a very rich experience in the subway tunnel reinforcement. For example, Nanjing Metro Line 3, Shenzhen Metro Line 11, Hefei Metro Line 1, etc., These are all the domestic excellent project cases in the industry. The difference between subway tunnel reinforcement and general engineering reinforcement is very large. The project is much more difficult than the general ones. The ground above the metro is complex and flexible. Due to the top of the leakage or the overload, the subway tunnel often appears cracks, seepage, slab staggering and other issues, which threaten the safe operation of the subway. And the subway tunnel needs normal operation during the day. So we can only conduct the construction in the night outage for 3 to 4 hours. The technology of the construction team must be excellent and the materials must be appropriate. Because there is no repeated rework condition. Now let’s talk about some information about the subway tunnel reinforcement cases.
Generally speaking, if we find water leakage in the tunnel, we must check whether there are some cracks timely. If there are some cracks,
We should inject the epoxy resin glue and fill the tunnel’s cracks. Without any mistake, we clean up the site waste. If the internal cracks are serious, it is necessary to strengthen them with the sticky steel. The sticky steel reinforcement must be combined with stainless steel anchor bolts. Here we recommend Nanjing Mankate after reamed mechanical bolt. This kind of bolt is anti-fatigue and not loose. And it has cracked concrete applicable report! It is a mechanical anchor especially used for underground tunnels. The steel plate is fixed with an anchor bolt. The bolt hole is required to be staked on the segment before the installation of the annular steel plate.
At the same time, according to the corresponding position of the bolt, we need to reserve the hole positions on the steel material. Before the installation of the steel ring, we should use the epoxy resin that is the same strength as the segment concrete to strengthen the segment. We recommend Nanjing Mankate repair adhesive. After welding the steel rings, we should immediately conduct the epoxy resin glue injection and filling between the steel plate and the segment. Here we recommend Mankate sticky steel glue MKT-GSS. This kind of sticky steel glue has been applied to 204 National Road, Shanghai-Nanjing high-speed, Nanjing Golden Eagle, Shanghai East China University of Science and Technology and other projects. It has advantages of high strength, high compatibility with the substrate and corrosion-resistant. When we choose this sticky steel glue, we should consider the following factors. ① the material has high adhesion stress to the concrete surface; ②it has high strength after curing; ③the material has a certain tensile and it can reduce the possible follow-up stress change.
Finally, in the completion of the subway tunnel reinforcement projects, we must take into account the operation of the subway. After the construction of the night reinforcement, it needs to return to the normal operation the second day. So we need to do prevention work for all kinds of accidents. At the same time, a large number of experienced personnel are required to carry out construction. Once the subway is in outage, it will cause a very bad impact. During the construction period, we should implement the workload strictly in accordance with the plan to ensure the quality and quantity to complete the task, and then achieve the desired results.
If you have met the above questions, please come to consult us. We also welcome you to purchase Mankate sticky steel glue, mechanical anchor bolt and other materials in the project. We will be happy to serve you.
Hotline: 400-894-5118.
Editor: Nanjing Mankate
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