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Although the road noise barrier has significant advantages in noise reduction, there are still two problems to be discussed.
More and more highways (especially those built early) have been repeatedly complained or visited by residents along the route due to the increasing traffic noise, which has brought great difficulties to the maintenance and management of roads. In order to implement the guiding spirit of “building a harmonious societyâ€, managers have tried every means to explore the solution to the problem of traffic noise and disturbance. Through many aspects of argumentation, the choice to build a road sound barrier is an effective way to solve traffic noise and disturb people. Its significant advantages are:
(1) Has a certain noise reduction effect (generally 5dB-10dB);
(2) There is a psychological suggestion of residents along the line;
(3) There is no problem of land acquisition for relocation;
(4) One-time investment, quick effect and low maintenance cost.
Many customers pay attention to the quality of the sound barrier when purchasing the sound barrier, so as to avoid a series of follow-up problems caused by the quality of the product in the future, which brings unnecessary trouble. However, paying attention to product quality when purchasing a sound barrier is an important aspect, but if you want the product to be durable and extend the life of the sound barrier, it is also important to maintain the sound barrier in the daily process.
Generally, the sound barrier should be cleaned on its surface during initial installation to keep its surface dry. When the sound barrier is installed, periodically clean the surface. After cleaning, dry the surface with a dry, clean cloth or other tool. Especially in places where the pollution is serious or the corrosion is severe, the sound barrier must be maintained frequently, so that the service life of the sound barrier can be prolonged.
The construction of sound barrier foundation construction is related to the application of sound barrier. It is used in highways, railways or in viaducts, bridges, culverts and passages. It is divided into subgrades because of different geological structures. The foundation of the sound barrier and the foundation of the sound barrier of the bridge section; however, it has nothing to do with the appearance of the sound barrier, regardless of whether the installation of the upright sound barrier or the installed arc sound barrier is irrelevant, and the sound barrier material has nothing to do with it. Let's explore two road sound barrier problems:
1. How to increase the overall sealing effect of road sound barrier
(1) Bridge (channel) section
The sound barrier screen of the bridge section is hung on the outside of the guardrail, and there is a 2 - 3cm axial gap between the sound barrier screen and the top of the guardrail. In order to improve the sealing performance, the designed sound barrier screen has a 5cm overlap with the top of the guardrail. At the same time, the metal buckle is used for sealing. The channel section is sealed directly with a strip.
(2) Embankment section
The embankment section is mainly caused by serious leakage in the drainage ditch, because the drainage ditch is basically connected with the water stop belt, and the roadbed slope is about 10cm higher. When the foundation beam body is not treated, there will be a large leak point, so the design is Here, the PVC pipe is pre-buried, the pipe is bent into a right-angled "Z" shape, and a slag net is set to minimize the direct projection of sound.
2. How to improve the safety of road sound barriers
(1) In the bridge section, the sound barrier is placed outside the smashing wall. When the vehicle is impacted, the smashing wall can protect the screen body. At the same time, the detachable rod is designed to be connected integrally to increase the performance of the group.
(2) Embankment section, the sound barrier is set at 0.95m from the edge of the shoulder, and the position of the wave plate guardrail is 1.1m, which is 10% more than the requirements of the Highway Environmental Protection Design Code (JTJ/T006-1998). In order to ensure that the corrugated board anti-collision guardrail has greater anti-collision deformation space, try to protect the sound barrier from damage. The basic design adopts the structural form of the beam body embedded in the pile foundation to enhance its overall connection.
(3) The channel section, because the channel section can only be arranged correctly with the corrugated board guardrail, the anti-collision design is adopted, and the fall prevention design method is adopted as a whole, and the 3 rows of drawbars are designed in the rear part of 2m high range, even if the board is impacted. The deformation will not fall and hurt people.