The Fourth Company of China Railway 11th Bureau: Intelligent Construction Makes Life Better

machine independently developed

by Shaoxing Second Ring Intelligent Highway Project

The Intelligent Construction Research Institute of the Fourth Engineering Co., Ltd. of China Railway 11th Bureau Group (hereinafter referred to as the Fourth Company of China Railway 11th Bureau), a https://img7.ccement.com/richtext/img/hu3y5kpr8u51687657212929., has devoted itself to the research of engineering intelligent construction. Innovative research and development of tooling, development of engineering information system, and innovative scheme and implementation of intelligent engineering, and actively explored the industrialization, intellectualization, digitalization and green transformation of the construction industry, and achieved fruitful results.

Intelligent tooling to solve the industry problem

of tunnel pouring concrete, the more to the top is not easy to compact, easy to produce cavities, the phenomenon of cavities above the tunnel is an industry problem, threatening the safety of train operation. In order to reduce the cavities, it is often necessary to eliminate the cavities in the tunnel roof. According to industry estimates, because tunnel renovation consumes a lot of manpower, materials, equipment and so on, the cost of renovation is huge.

"The traditional method is to vibrate through the outer panel after pouring concrete in the tunnel, but the number and size of cavities are still large.". We design openings in the panel and install vibrators to vibrate the concrete to improve the compactness of the concrete and reduce the number and size of cavities. Cao Guangwei, head of the Intelligent Construction Research Institute of the Fourth Company of the 11th Bureau of China Railway, said that in 2019, the Institute began to concentrate on solving the problem of tunnel cavities, and the frequency and amplitude of vibration are the key to solving the above vibration problems. The staff moved the laboratory to the construction site and carried out a large number of tests. "We worked more than ten hours a day, constantly testing the strength, cavity and compactness of concrete, repeatedly testing, and finally determined the frequency of the vibrating device." Cao Guangwei said.

After two years of repeated tests and research, the Institute has developed a tunnel secondary lining intelligent pouring trolley based on the secondary lining intelligent pouring system, which includes nine parts, such as automatic plug-in frequency conversion high-frequency vibrating device and flow sensor.

"Through radar detection, it is found that the second lining intelligent pouring trolley has greatly improved the compactness of concrete, reduced the size and quantity of cavities by 70% or 80%, and reduced the rework rate by 60% or 70%, which can greatly save the cost of tunnel renovation." Cao Guangwei introduced that the equipment effectively solved the key problems of tunnel construction quality, safety, management and work efficiency. At present, the system has been popularized and applied in more than ten high-speed rail lines, such as Guinan, Xishi, Chongqing-Kunming, Chongqing-Guizhou, and has been praised by the State Railway Group and the owner company. In 2022, China Railway Construction appraised the achievements of "Research on Efficient Construction Technology for Improving Tunnel Lining Quality" as the international leader.

From the automatic production line of intelligent pouring second lining trolley, small prefabricated components to the automatic production line of steel arch frame and the production line of intelligent beam yard, on the basis of the above core tooling, the Institute aims at other quality and safety problems in the field of construction engineering. It has also developed a number of intelligent tooling equipment, such as intelligent steel bar factory, automatic vibration leveling manipulator for inverted arch, automatic chiseling machine for tunnel side wall, automatic chiseling machine for bridge flange plate, wet spraying manipulator, and intelligent dust removal and ventilation equipment for extra-long tunnel.

Information support makes construction safer and more efficient

. What should we do when the safety helmet and reflective vest of the construction personnel on the project site are not actively and regularly worn, and the inspectors are difficult to reach or can not supervise them for a long time? How to solve it? In addition, the cost of manpower and management is getting higher and higher, and the construction personnel are becoming more and more difficult to recruit. "How to strengthen information management, realize information replacement, and effectively supervise construction safety, management and progress has become the only way for modern construction enterprises to transform digitally." Li Jun, Secretary of the Party Committee and executive director of the company, introduced that in recent years, the Intelligent Construction Research Institute has continuously strengthened the research and development and application of enterprise management informatization, carried out the research and development, operation and maintenance of the internal informatization platform of the 11th Bureau Group of China Railway, continued to digitalize and replace the landing business, and created the "Digital 11th Bureau, Intelligent 11th Bureau".

"CIS, an integrated information system independently developed by us, has greatly improved the ability of information management and control. As a unified intelligent site management platform at the company level, it is used for the management and control of key links such as project safety, quality, engineering quantity, construction organization and material acceptance." Li Jun introduced that, taking CIS safety management plate as an example, in order to solve the problems of wide range of construction safety risk points, uncompacted terminal safety management and control, and no effective grasp of safety process management and control. The management section builds safety PDCA cycle management through eight sub-modules, such as safety risk classification, safety hazard investigation and management, one person, one file, pre-shift speech, and the person in charge of work, and provides intuitive and timely data for decision-makers through data collection, application analysis and other functions. "Intelligent early warning and analysis function, urge timely elimination of potential safety hazards, further compact the safety responsibilities of the five responsibility systems, and form a comprehensive and effective closed-loop management." Li Jun said.

In addition, the system has played an important role in quality management, intelligent materials, engineering quantity accounting and other sectors, greatly reducing quality risks, reducing material consumption, controlling material costs, engineering measurement, cost control and other aspects. The system has been widely used in 95% of the company's projects.

Intelligent mixing station platform, intelligent beam yard system, intelligent video surveillance system, intelligent site cloud platform.. At present, the Institute has developed a number of scenarios and more than 20 information software, and is gradually realizing the full coverage of information technology in the field of engineering construction from the whole to the point. With the support of the Research Institute, China Railway 11th Bureau has achieved digitalization and intellectualization in management decision-making, resource allocation, production coordination, cost control, risk provention and control, production and operation through continuous digitalization and information upgrading, which promotes the quality and efficiency of enterprise operation and the value chain, and helps enterprises to occupy the leading position in the industry. What will the "future city" look like when

wisdom enables a better

city?

In the Shaoxing South Second Ring Intelligent Transportation Project, the Fourth Company of the 11th Bureau of China Railway described a "future traffic" for us: automatically adjust the traffic light time according to the congestion situation, control the street lighting time.. The project accurately perceives the traffic situation, traffic events, vehicle trajectory and other information of the expressway from an intelligent perspective, providing support for the realization of the whole section, full function and full coverage.

According to the introduction, the Institute uses big data, artificial intelligence, vehicle-road collaboration and other technologies to achieve personalized travel information release and intelligent operation and maintenance of transportation facilities. Through lane-level traffic guidance and artificial intelligence plan assistance, the fine management of expressways is realized. Through the standardization of the underlying "digital road" information construction and the business traction of the top-level digital road platform, the goal of "digitalization of road network and digitalization of traffic management" is achieved, which helps to create an orderly, smooth and orderly urban traffic environment with civilized and safe travel.

In the future, there are more and more smart projects such as smart cities, smart transportation, smart parks, smart buildings and smart water services. Innovative solutions and implementation of smart projects have become an important part for enterprises to develop new industries and the only way for construction enterprises to develop with high quality.

"Our existing orders are full, and we have to continue to rush back to Wuhan to put new products into production." As soon as he returned from the ABO project of urban village reconstruction in the main urban area of Baoding, Dr. Peng Xingxin, chief engineer of the research Institute, went into a new "battle" without stopping. The Institute has built the ABO project of urban village reconstruction in the main urban area of Baoding into a demonstration project of "BIM + smart site" application, improving the efficiency of communication and cooperation, and strengthening the whole process, visualization and systematic management of construction organization, which can be described as "dry goods".

Peng Xingxin introduced that the project used BIM technology to simulate the earthwork, foundation, main body, decoration and other stages, to fully refine the analysis of each stage of the project, to form a model standard drawings, to ensure the uniqueness and practicality of the construction scheme. At the same time, the automatic monitoring system of foundation pit can realize early warning and prevent excessive displacement and deformation. In addition, the application of intelligent environment monitoring, AI video surveillance and group tower anti-collision system in the intelligent construction site will compare and analyze the data collected in the virtual environment and the Internet of Things, so as to achieve the intelligent visual management of the project. The project has actively explored the reduction of construction waste, the creation of intelligent (digital) construction sites, and the consolidation of safety management, which has helped it win many honorary titles such as "the first batch of demonstration projects to create intelligent construction sites in Hebei", "China Railway Construction Youth Civilization", and the silver prize of the National BIM Technology Competition.

At present, a number of smart projects such as Optics Valley Complex Intelligent Health Monitoring, Shaoxing South Second Ring Intelligent Transportation, Baoding Ring Water System Wind Valley Intelligent Park, Baoding Ring Water System Landscape Lighting are being carried out in an orderly manner. The Intelligent Construction Research Institute of the Fourth Company of the 11th Bureau of China Railway is giving more "wisdom" to the project, making the city more intelligent, low-carbon, green and better.