Prestress concrete noise barrier sound absorption inserting plate for high speed railway

Abstract

The invention relates to a prestress concrete noise barrier sound absorption inserting plate for a high speed railway. The prestress concrete noise barrier sound absorption inserting plate for the high speed railway comprises a prefabricated concrete unit inserting plate and a sound absorption panel which are rectangular structural members; the sound absorption panel is connected with the prefabricated concrete unit inserting plate through a bolt; left and right sides of the prefabricated concrete unit inserting plate are provided with thickened rib columns, and the top and the bottom of the prefabricated concrete unit inserting plate are respectively provided with thickened rib beams; a groove is formed on the thickened rib beam at the bottom of the prefabricated concrete unit inserting plate; and horizontal and vertical prestress reinforcing steel bars are arranged in the prefabricated concrete unit inserting plate. The prestress concrete noise barrier sound absorption inserting plate for the high speed railway can effectively resist long-term action of pulse air load and natural typhoon load of the high speed railway of which the highest speed is 380 to 400 kilometers per hour, has good fatigue resistance performance, obvious lasting quality and remarkable noise-reducing effect; and the cost for manufacturing the prestress concrete noise barrier sound absorption inserting plate is low, and the prestress concrete noise barrier sound absorption inserting plate is convenient to install and exchange.

Description

technical field [0001] The invention relates to a component used in railway engineering, in particular to a sound-barrier sound-absorbing board for isolating high-speed railway noise. Background technique [0002] In recent years, China's high-speed railway has developed rapidly. By September 2010, with the opening of the Shanghai-Hangzhou high-speed railway, China's operational mileage of high-speed railways reached 7,055 kilometers, ranking first in the world. In addition, there are about 40 passenger dedicated lines and intercity railway projects that have already started construction, such as the Beijing-Shanghai high-speed railway, and the high-speed railway operation mileage will reach 13,000 km in 2012, exceeding the sum of other countries. At present, China has become the country with the most complete high-speed railway system technology, the strongest integration capability, the longest operating mileage, the highest operating speed and the largest construction sca...

AI Technical Summary

Problems solved by technology

For ordinary concrete sound barriers, they are heavy in weight, poor in crack resistance, poor in fatigue resistance, weak in connection with roadbeds or bridges, inconvenient in construction, and difficult to repair and replace after a disease occurs.

For the prestressed concrete sound barrier, it is also heavy in weight, poor in fatigue resistance, weak in connection with roadbed or bridge, complex in construction, and difficult to repair and replace after a disease occurs.

For the metal column inserting plate sound barrier, the commonly used metal inserting plate cannot adapt to the dynamic and repeated action of the pulsating wind pressure of the 250km / h high-speed train, and is prone to fatigue damage. Developed into wavy fold-like cracking damage

The ribbed glass fiber reinforced plastic unit plate (GRP) developed now has good mechanical properties and elastic deformation capacity, light weight, and good noise reduction effect, but its disadvantage is that it is too expensive to be popularized and used

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