Case Study State-Of-The-Art Noise Reduction for Riyadh Metro

Case Study State-of-the-art Noise Reduction for Riyadh Metro

Protection of structures

Better quality of life and working conditions

Long term performance and characteristics Highly efficient noise and vibration mitigation

Project Description

The Riyadh Metro rail network Twice as much urban traffic has led to severe traffic congestion, embodies the backbone of the expected by 2030 especially during peak hours. public transportation system. The network connects public The metro project is part of A sophisticated public facilities with local residents and Riyadh’s Public Transport Project transportation system commuters as well as educational, (RPTP) plan that was approved by commercial and medical the Council of Ministers in 2012. In order to meet the growing institutions. It is connected to The project is also known as 'King challenge of rapid urban growth, a King Khalid International Airport, Abdulaziz Public Transportation sustainable public transportation King Abdullah Financial District, Project'. The current daily traffic system was carried out as a main universities, downtown and demand is 7.4 million traffic trips, cornerstone with the aim of reducing the public transport center. whereof almost 90 percent is met automobile dependence and by private automobiles. The daily significantly improving the service Due to previous references demand is expected to exceed level of the transportation system. in the region, as well as the 12 million traffic trips by the year To guarantee the high standard and very good relationship to 2030. This huge increase in traffic availability as well as longer service consultants and contractors, linked with high dependence on cars life for the six metro lines, Getzner Getzner was commissioned in 2016 for its excellent products and solutions to protect people living close to railway lines against vibrations and noise. Advantages

he Riyadh Metro Project is the — Highly effective protection Tbiggest metro project in GCC against vibrations and (Gulf Cooperation Council) and is ex- structure-borne noise ecuted by the Riyadh Development — Cost-optimised solutions Authority (RDA) in Saudi Arabia. The achieved by selecting project involves the construction of a project-specific materials metro rail network across various lo- — Improved quality of life cations in Riyadh. The metro has six and working conditions main routes covering a total length for residents of approximately 177 km with 85 sta- — Minimisation of loads tions in total, including underground, on the rail seat ground level and elevated stations. — Smoothing of rail deflection More than 73 km of the metro in — Quick and simple the capital is underground, which is installation about 40 percent of the total length. — Increased safety and travelling comfort Tunnel ready for installtion Baseplate pads for VAE turnouts

provides appropriate products and strip bearing system including shear and components in order to increase solutions to minimise downtime, keys isolation and filler material travelling comfort and reduce life to reduce maintenance costs and serving as lost formwork. cycle costs of train carriages. to increase lifetime. Furthermore, Mass-spring systems are used in these measures effectively reduce applications with extremely stringent Impressive use of material vibrations and noise in urban areas requirements for protection against that are caused by metro traffic vibration and structure-borne noise. The total quantities for all applica- and protect track structures and These demanding vibration and tions are approximately 95,000 m2 rail vehicles enabling smooth metro acoustic isolation requirements mass-spring systems and 21,000 operation. are successfully met by Getzner baseplate pads. solutions. Getzner offered specialized service The Getzner solution Baseplate pads for elasticity in the and support for this project, such track as technical, commercial and design Elastic components against support, material supply, installation disruptive vibrations Turnouts are critical components supervision on site and installation of any railway track. The Riyadh training. Furthermore, many special or the Riyadh Metro Project metro lines were equipped with heat- tests were performed to prove stated F5 dB insertion loss was to be treated premium rails, turnout and characteristics of the material. A achieved in the first section. In the signaling technology. To reduce the Factory Acceptance Test (FAT) was other section, a natural frequency high levels of wear on the turnouts performed under supervision of of 8.4 Hz was desired. Getzner and the other superstructure the customer for every delivery. tailored a dedicated solution for components, Getzner baseplate pads the different Riyadh Metro track for over 320 turnouts were installed The main advantages of the Getzner lines varying between full surface in different sections of the six metro solutions are the proven long-term and strip bearing isolation for lines. Elastic baseplate pads maintain performance in all environmental the viaduct, at-grade, tunnel the load-distribution qualities of the conditions and bespoke system sections, as well as 12 elevated rail and reduce vibrations caused by design according to project stations (Stations Mezzanine). irregularities in the wheels and track. requirements. By properly distributing the stiffness Better quality of life and working of the baseplate, it is also possible conditions to adjust the level of rail deflection caused by the rolling stock. Two types of mass-spring systems were implemented due to the Floor bearing in coaches to different requirements at each increase the comfort of the journey section. The first system consisted of full surface single type of vibration For this project, Getzner has mitigation material with side mats. developed special solutions for the The second solution considered a mounting of floating floor bearings AUSTRIA JAPAN pnn: 2021 7.4 million traffic trips Daily traffic demand: Opening: Photo credits: Getzner Werkstoffe 93 % Berlin (DE),MunichStuttgart (DE),Lyon (FR), Ratio of exports: Bürs (AT) Railway, construction, industry 490 (360 inBürs) EUR100.3 million Locations: Headquarters: 1969 (as asubsidiary of Business areas: 2017 turnover: Employees: Ing.Jürgen Rainalter Chief Executive Officer: Foundation: Getzner Werkstoffe GmbH Riyadh Development Authority (RDA) 95,000 m 35 kilometers of mass-spring systems used: Material Operator: Track length: Facts andfigures 3 Line Tunnel — Tokyo — — Bürs —Bürs

INDIA —Pune INDIA GERMANY — Berlin — Munich —Stuttgart —Munich —Berlin Kunshan (CN), Charlotte (US), Decatur (US) Amman (JO), Tokyo (JP), Pune(IN),Beijing (CN),

CHINA —Beijing CHINA 2 mass-spring systems and21,000 base plate pads

USA —Charlotte USA

Getzner FRANCE , Mutter &Cie) — Lyon —

JORDAN JORDAN ww w.getzner — Amman .com .com