"Smart Card" of China's High Speed Rail
"Optics Valley" daylighting, built an energy harvesting field with a length of 556 meters and a width of 15 meters; fair-faced concrete technology, creating 192 three-dimensional curved "flowering columns"; high-speed railway digital twins, constructing the entire process and professional use of BIM (Building Information Modeling) ) Designed intelligent digital model; fully enclosed sound barrier, built 847.25 meters of "sound-proof tunnel" on high-speed railway; super-large photovoltaic roof, laying 42,000 square meters of photovoltaic building materials, annual average power generation up to 5.8 million kilowatt hours; 5G signal Coverage, interconnection of everything, the future is here.
These bright intelligent designs all come from China's newly opened intelligent high-speed railway-Beijing-Xiong'an New Area Intercity Railway (hereinafter referred to as Jingxiong Intercity Railway).
On December 27, 2020, the new section of the Beijing-Xiong Intercity Railway from Daxing Airport to Xiong'an was opened for operation. Since then, the Beijing-Xiong Intercity Railway has been fully connected and Xiong'an Station has been put into use simultaneously.
The Jingxiong Intercity Railway is 91 kilometers long and has a maximum design speed of 350 kilometers per hour.
Today, starting from Xiong’an Station, it takes only one breakfast to arrive at Daxing Airport.
From Xiong’an to Beijing, the original 2-hour drive takes only 50 minutes to go directly.
High-speed rail is a beautiful business card of China's equipment manufacturing.
As a smart high-speed railway independently developed in China, the Beijing-Xiong Intercity Railway takes digitization and intelligence as the core, and builds around the overall goal of "quality, intelligence, green, and humanity", and extensively applies artificial intelligence, big data, cloud computing, and the Internet of Things , Building information modeling and other cutting-edge technologies, as many as 71 intelligent designs.
Ingenious design to create fine Jingxiong
"As a railway builder, being able to participate in the construction of Xiong'an Station is a fortunate career. We want to build a high-quality project that can withstand the test of history." Wang Xingyun, Party Branch Secretary of the Xiong'an Station Project Department of China Railway Construction Engineering Group said with emotion.
Since the start of construction in 2018, the construction workers of the Jingxiong Intercity Railway have adhered to ingenuity, innovated construction technology, and applied technologies such as fully assembled integration to ensure the efficient construction of the Jingxiong Intercity Railway; uphold the scientific design concept and center on the Xiong'an Station , To build a highly complex and clustered "station-city integration" development model.
Different from the cast-in-situ system used in traditional reinforced concrete projects, the Beijing-Xiong Intercity Railway has realized the fully assembled and integrated structural design and construction from foundation, piers, bridges to deck systems for the first time in the railway field, effectively improving the The construction efficiency of the intercity railway has effectively achieved the effects of energy saving and emission reduction, shortening the construction period and reducing risks.
According to Kang Xuedong, deputy chief engineer of China Railway Design Group Co., Ltd., this kind of prefabricated integrated bridge construction, whether it is the pile foundation, pier body, pier cap, box girder, or bridge deck protective wall, cable trough, etc. It is professionally designed, prefabricated in sections, and then transported to the site to be assembled.
Due to the high process precision requirements, the prefabrication of hundreds of tons of concrete piers, the positioning error of the steel bar needs to be controlled within 2 mm.
In order to achieve "millimeter-level" assembly accuracy, the scientific research team of Jingxiong High-speed Railway independently developed 12 sets of tooling equipment to ensure accurate alignment during assembly.
This kind of bridge construction technology is vividly called "building high-speed rail like building blocks."
The successful practice of integrated bridge assembly technology in the railway field has laid a solid foundation for the construction of the Beijing-Xiong Intercity Railway.
The concept of "Integration of Station and City" at Xiongan Passenger Station has created a win-win situation of "rapid development of public transportation and efficient construction of urban hubs".
Xiong'an Station is the largest newly-built station of the Beijing-Xiong Intercity Railway, with a construction area of 475,200 square meters and a platform scale of 13 stations and 23 lines.
China Railway Group is planning and designing Xiong'an Station in accordance with the concept of station-city integration, implanting diverse composite functions and cross-domain public spaces, integrating the intensive configuration of urban needs, and effectively connecting urban space and other transportation methods.
Entering Xiong'an Station, the flexible and diverse double-decker three-dimensional waiting layout has attracted the attention of many passengers.
Based on the principle of three-dimensional layout and compact layout, Xiong'an Station is mainly on the ground floor and supplemented by the elevated floor. Passengers can freely choose the waiting place according to their needs.
At the same time, an outbound mezzanine is set between the ground floor and the platform level to realize the "layered entry and exit, separation of arrival and departure" for passengers to ensure smooth entry and exit, improve transfer efficiency, and save passengers more time and economic costs.
"The'station and city integration' is a highlight of Xiongan Station. Xiongan Station has achieved the organic integration of the hub area, urban planning, and industrial development, realizing the effective connection and integration of the station urban space with the hub, urban rail, and underground space." Said Du Xiaojun, head of Xiong'an Station.
The new integrated design concept integrates the construction of the Xiongan Intercity Railway and the Xiongan New District.
In the future, Xiongan Station will not only be a transportation hub for urban passenger transport, but also an urban catalyst point for the development of Xiongan New District.
Intelligent technology lights up wisdom Jingxiong
As another smart high-speed railway constructed in China, the Beijing-Xiong Intercity Railway has made new breakthroughs in a number of key technologies. With a smart brain as the core, it depicts smart Jingxiong from three aspects: smart construction, smart equipment, and smart operation. New blueprint.
At Xiong'an Station, the Jingxiong Intercity Railway deployed a smart brain.
It can automatically collect production control and service information to a data platform, carry out data collection and governance, and build a big data resource database for the Jingxiong Intelligent High-speed Railway.
At the same time, it supports the development of multi-dimensional intelligent analysis across disciplines and industries, and provides technical support for intelligent diagnosis, intelligent prediction, and intelligent decision-making.
"The security status of our infrastructure can be detected at any time. This detection is like a heart patient who brings a Holter (Holter). Whether in the hospital or at home, the hospital can detect his condition at any time." Kang Xuedong Describe the "smart brain".
In terms of smart construction, the Beijing-Xiong Intercity Railway adopted the BIM (Building Information Modeling) application for the first time across the entire line, all disciplines, and all design stages to achieve three-dimensional digital intelligent management from design, construction to operation, creating a "digital twin" of intelligent high-speed rail. That is, a physical high-speed rail and a virtual digital high-speed rail are obtained at the same time.
According to Xiao Rui, the overall designer of China Railway Design Group Co., Ltd., in the preliminary design stage, designers use satellite images, aerial photography and UAV data to establish a high-precision BIM model to visualize the completion of the project.
Through full-line and full-specialized parametric modeling, construction workers can simulate the entire railway before construction, and have a detailed understanding of the key and difficult points in the construction process, and the problems in each link can be fully traced.
"For example, if a screw is broken, maintenance personnel can inquire which manufacturer made the screw and how it was installed to ensure proper maintenance. Some important equipment and nodes, equipped with sensing devices, can issue alarms on their own health conditions." China Railway Design Explained Ren Chao, head of the Fourth Electric Power Group, Jingxiong Intercity Project.
Relying on BIM technology, the Beijing-Xiong Intercity Railway has achieved a series of achievements such as intelligent beam yard, automatic steel processing and intelligent plate factory, and the product accuracy has been greatly improved.
In addition, the Beijing-Xiong Intercity Railway integrated the railway BIM model into the CIM (City Information Model) platform of Xiongan New Area, laying a solid foundation for the development of digital Xiongan.
In terms of intelligent equipment, the Beijing-Xiong Intercity Railway uses advanced train control systems, based on technologies such as intelligent control, fault diagnosis and prediction, to achieve a new generation of intelligent traction power supply and communication systems, and form the basis for lines, communication signals and traction power supply. Refined management of the entire life cycle of the facility.
At present, scientific researchers have invested in five types of intelligent equipment, including intelligent arm installation vehicles, automated catenary pole vehicles, and hanging string calibration equipment, to build the first sunken traction substation on the south side of Xiong’an Station. Holographic perception, multi-dimensional integration, reconstruction self-healing, and intelligent operation and maintenance are integrated.
In addition, in the BIM+GIS (Geographic Information System) construction mode of the Beijing-Xiong Intercity Railway, the Beidou system's railway signal construction and measurement technology, information storage management and quality tracking system, mobile communication GSM-R intelligent network optimization technology, etc. Creative achievements play an important role.
In terms of intelligent operation, the Xiongan Intelligent High-speed Railway Station can provide passengers with all-process travel services. From Xiongan to Daxing Airport, boarding passes can be exchanged within 100 meters.
Whether it is precise positioning or path planning, you can quickly query.
In order to keep track of the mobile equipment situation, the station also adopts electronic tag management to realize predictive maintenance.
At the same time, in response to the hidden dangers of equipment failures, driving accidents and uncontrollable natural disasters in driving, the station uses integrated video integration, earthquake warning and other intelligent technologies to achieve advanced prevention and improve the disaster prevention capabilities of the high-speed rail.
"This is a super'smart' high-speed railway!" Zhao Hongwei, chief researcher of the China Academy of Railway Sciences Group Co., Ltd. sighed. On the 91-kilometer high-speed rail line, the Beijing-Xiong Intercity Railway used 71 smart technologies to show the world. China's new business card for high-speed rail sets a new benchmark for the world's smart high-speed rail.
Green technology helps ecological Jingxiong
The Beijing-Xiong Intercity Railway adheres to the concept of "ecology first, green development" in the Xiongan New Area, and incorporates many ingenuities in the design. The engineers combine the latest design concepts and technologies to integrate the concept of green, ecological and sustainable development throughout the railway design And the whole process of construction.
How to combine technological innovation and green development in railway construction?
Jingxiong Intercity Railway handed in a full score.
First of all, in terms of design concepts, the Beijing-Xiong Intercity Railway combines ecological and green concepts at the beginning of the design, organically integrates landscape elements such as mountains, waters, gardens, and green plants inside and outside the station hall to create green railway infrastructure and build mobile Oasis promenade.
The addition of these green elements enhances the travel experience of passengers, and the boring mood of long-distance travel in the past has also been greatly relieved.
In addition to innovations in design concepts, the Beijing-Xiong Intercity Railway has fully implemented the concept of green environmental protection in technology and decoration, and introduced a number of "hard core" technologies to enhance the energy-saving and emission-reduction effects of the station, while reducing the impact of railway construction on surrounding residents. Noise pollution.
The roof of Xiongan Station is covered with 42,000 square meters of photovoltaic materials, which greatly improves the efficiency of power saving.
According to calculations, the average annual power generation of these photovoltaic building materials can reach 5.8 million kilowatt-hours, which is equivalent to reducing carbon dioxide emissions by 4,500 tons and planting 120,000 hectares of trees.
Xiong'an Station adopted a kind of "plain concrete", namely fair-faced concrete.
This special concrete changes the ratio of different raw materials such as stone, sand, cement, etc., so that the surface of the finished building is smooth and flat without secondary processing, showing a natural gray.
More importantly, it is very environmentally friendly, without any pungent smell, and brings passengers a natural and comfortable waiting experience.
"These fair-faced concrete columns are cast in one time, with straight corners, smooth arcs, and tall and beautiful." said Wu Yadong, chief engineer of the Xiong'an Station Project Department of China Railway Construction Engineering Group.
In order to achieve the goal, hundreds of experiments were carried out in each manufacturing process, among which, the experiment of material ratio was carried out thousands of times, and more than 10 patents were finally obtained, bringing a fresh and natural wind to the overall design.
Not only is the interior of the station very environmentally friendly, but also attention to detail settings where the train passes, striving to minimize the impact of high-speed rail operations on the environment.
Lu Guoxi is a villager in Beiluodian Village, Bazhou City. He heard that the Beijing-Xiong Intercity Railway will pass through here. He was worried that the train would make a lot of noise and affect daily life.
When they saw that the noise produced by the train passing by was very small and concentrated only for a few seconds, Lu Guoxi and the other villagers breathed a sigh of relief, "You are not paying attention, you don't even know that the high-speed train has passed!"
This small change is attributed to the application of a fully enclosed sound barrier.
The Beijing-Xiong Intercity Railway uses the world's first fully enclosed sound barrier for high-speed railway bridges with a speed of 350 kilometers per hour. It has a total length of 847.25 meters and can reduce noise to less than 20 decibels.
Kang Xuedong said that the use of fully enclosed sound barrier technology is a major breakthrough in railway design.
The first and third floors of Xiong'an Station are waiting rooms, and trains pass by on the second floor.
When passengers are waiting for the train, how to reduce the "rumbling" noise caused by the passing train?
The engineers of railway design have long considered this.
For the first time in China, Xiongan Station adopted prefabricated platform sound-absorbing wall panels. This wall panel adopts an acoustic design with a lot of 55 mm holes on it, and the interlayer is made of glass wool.
"This kind of wall panel greatly reduces the noise generated by trains. People hear the noise of trains passing by when waiting for the train, which is roughly equivalent to the sound of a car driving across a highway." Xiong'an Station Building Project Department, China Railway 12th Bureau Said Deputy Chief Engineer He Jinhui.
Traditional culture nourishes the humanities
The Beijing-Xiong Intercity Railway strives to create a "high-value" station, incorporating local culture into all aspects of modeling design, interior decoration, etc., making the station a dazzling business card that showcases the regional culture of Xiong'an.
The appearance of Xiong'an Station adopts the design theme of "green lotus dripping dew", which has a drop-shaped oval shape. The outline of the oval roof is like the source of a clear spring, like dew on a petal of green lotus.
The designer cleverly integrated the local "water" culture into the design of Xiong'an Station.
"The source of the clear spring, the wind blows ripples", Zhou Tiezheng, chief expert and chief architect of China Railway Design Group Co., Ltd., explained its meaning: "The station is adjacent to Baiyangdian. This design is to try to fit the water culture of Xiongan New District." The appearance of "Qinglian Dilu" in the station means "Qinglian Dilu, moisturizing Xiong'an" and embodies the meaning of being close to nature and sustainable development.
From Xiong'an Station to Beijing West, one station and one scene are ingenious everywhere.
Kang Xuedong said that the design of Gu'an East Station is mainly based on the large water wave roof and tree-like corridors, which fully reflects the ecological culture of Gu'an's "Chinese hot spring town" and "mineral water town"; Bazhou North Station design It mainly uses the combination of "dragon shape" and "door" to convey the historical culture of Bazhou "the key of the three gates and the key of Jizhong".
When the train leaves the station, the design of the bridge railings along the line is even more unique.
According to Kang Xuedong, the pattern of bridge railings and sidewalk covers on the whole line adopts lotus patterns, and the design concept is derived from the meaning of lotus in Baiyangdian Lake, Xiong'an New District.
The continuous girder arches across the Guangzhou-Guangzhou Expressway are painted in daytime color matching. The inner arch ring adopts a cool color and the outer arch ring adopts a warm color. Looking at the railway bridge from the highway, the colors are gorgeous and rich, showing a rainbow effect, implying colorful beauty life.
Xiong'an Station has set up an inbound unit composed of multiple sets of curtain walls.
The curtain wall shows the twenty-four solar terms in the traditional Chinese farming culture, implying the change of the four seasons, the sequence of the spring and autumn, and the endless life in the Xiongan New Area. It contains the best wishes of the designers to the Xiongan New Area.
The addition of cultural elements adds a bit of rich cultural heritage to Xiong'an Station, subtly providing spiritual nourishment for passengers traveling from the north to the south, and using cultural power to wash them away from the fatigue of the journey.
For the millennium plan, transportation should go first.
In the future, Xiong’an Station will become the new hub of China’s “eight verticals and eight horizontals” high-speed railway network. The Beijing-Xiong Intercity Railway will connect with Beijing-Hong Kong High-speed Railway, Tianjin-Xiong Intercity Railway, Xiongshi Intercity Railway, and Xiongxin High-speed Railway. The Anzhan station meeting will inject new vitality into the long-term development of the Beijing-Tianjin-Hebei region and the construction of the Xiongan National New District.
The Beijing-Xiong Intercity Railway will surely become another model of "China's smart manufacturing", constantly showing the world the acceleration of China's development and the new style in the new era.
(Yan Bing, Jia Xuetong, Huang Jiaying)
"People's Daily Overseas Edition" (version 05 on January 12, 2021)