Under the vigorous promotion of the Ministry of housing and urban rural development, the new type of building industrialization represented by prefabricated buildings has been rapidly promoted nationwide in recent years
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China Railway 14th bureau closely follows the requirements of national policies, combines the advantages of professional prefabrication, seizes the opportunity, improves the quality through transformation, explores a new construction industrialization road with high technology content, low resource consumption and less environmental pollution, cultivates new energy for enterprise development, and becomes one of the key factors for the development of China Railway Construction Xinxing plate
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As a pioneer, participant and promoter in the field of prefabricated building, China Railway fourteenth Bureau housing and Bridge Co., Ltd
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takes green development as the purpose, insists on developing high-quality products, with the blessing of big data and information construction, develops, designs and puts into operation a number of automatic intelligent production lines which are the first in China and the first in the industry, so as to promote the continuous upgrading of domestic prefabricated building manufacturing level and become an international leader Make a column
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During the Spring Festival, the Hechi Project Department of the housing and Bridge Company of China Railway 14th Bureau was in full swing
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After “one click Start”, the production line of double block sleepers operated automatically according to the set program under the monitoring of four systems
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The mechanical arm cleaned the mold automatically, extracted and placed the truss bars
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The inspection robot at the end of the workshop carried out 360 degree non dead angle infrared detection with 16 sensors The automation station operates in an orderly way There are only a few operation and maintenance workers walking in the 5000 square meter workshop, and the clean workshop has almost no noise except the sound of mechanical operation
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“I didn’t expect that concrete enterprises could achieve this level” “beyond imagination” In Beijing headquarters base, the intelligent and efficient production line, high-quality and exquisite products, clean and tidy workshop, advanced and perfect equipment attract the praise of the students
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Fangqiao company, 67 years old, is an important concrete prefabrication enterprise in Fangshan, Beijing in the early days of the founding of new China
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It has participated in the research and development of dozens of new railway beams, and has trial produced the first 24m, 32m double track full hole simply supported box girder and 40m high-speed railway double track full hole box girder in China, becoming the “prefabrication test pioneer” to promote railway development
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With the continuous influx of private enterprises, the homogenization competition of concrete prefabrication industry is becoming increasingly fierce, and the development of enterprises has entered a low ebb period
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Aware of the crisis behind the economic indicators, the leading group of the company actively studied policies, conducted field investigation, and searched for “solutions” to revitalize the old factories
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“First of all, we must emancipate our minds and open up our thinking so as to create a new situation.” In 2014, a consensus was reached at the beginning of the new leadership
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On the one hand, they put pressure on the domestic enterprises step by step and emancipate their minds
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On the other hand, they re examined the enterprise positioning and development mode, focusing on the road of “deep cultivation of specialties, national multi-point layout, and maximizing the advantages of the whole industrial chain”
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Time is opportunity
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Combined with their own advantages, they specialize in precast concrete components, and take the opportunity of expanding the sleeper and segment market to horizontally adjust the industrial structure, vertically lay out the national market, design the development blueprint, formulate the 13th five year plan, and lead the staff on the road of building industrialization development
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In 2015, the prefabricated construction market is still in its infancy, and the prospect of the industry is not clear
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Following the general trend of green development in the construction market, combined with the national incentive policies, the company quickly entered the high-end construction market, established the industrialization mode of standardized design, factory production and assembly construction from the factory construction at the beginning of the year to the product offline, and opened the first “experimental field” of building industrialization manufacturing in China’s railway construction system in only 49 days
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At the same time, they actively explore the win-win cooperation mode of the upstream and downstream industries
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The first batch of prefabricated components made a perfect debut in the residential project in Daxing Jiugong area developed by China Railway Real estate
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They successfully opened the Beijing market, and a large number of orders such as Miyun Shilipu and TongZhou Xiji poured in
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In order to speed up the pace of seizing the prefabricated construction market, they pondered over the equipment, improved the technology, expanded the market with excellent projects under construction, and selected talents to go out for training
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They trained a group of prefabricated construction professionals who can design and understand the technology, which laid the foundation for the enterprises to further expand the integrated advantages of R & D, design and production, and even form a complete industrial chain
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After three years of cultivation, as China Railway Construction’s first prefabricated building production base and national prefabricated building demonstration base, the housing industrialization branch has saturated tasks and considerable benefits, firmly standing in Beijing and surrounding markets
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Their prefabricated parts are used in many residential projects in Beijing such as Daxing, Changping, Tongzhou, Miyun and Fangshan, as well as key and difficult projects such as 500kV substation of Chengde State Grid and staff turnover room of Beijing Urban sub center
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Adhere to innovation and build a smart engine for industry development
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Under the policy background of vigorously promoting “new urban construction”, the company insists on strengthening scientific and technological support, promoting the integration of information technology, and cultivating a green building system
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In order to cultivate a scientific and technological innovation base, in the autumn of 2018, they set up the first R & D Center for prefabricated buildings of China Railway Construction Corporation, formed a scientific research alliance with China Architectural Design and Research Institute, Tsinghua architectural design and Research Institute, Beijing Jiaotong University, Southwest Jiaotong University and other scientific research institutions, and established 7 sub centers, including R & D Center for prefabricated structures, R & D Center for intelligent manufacturing equipment, and R & D Center for shield segments The center focuses on new product development, new material development, production equipment automation, intelligent upgrading and transformation, and big data analysis platform construction
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In order to build “unmanned chemical plant” as the endogenous driving force, after several years of practice and exploration, they put into operation the first automatic production line of heavy haul railway bearing block in China, the first automatic production line of the world’s largest diameter segment built by public rail, the first high intelligent CRTs III track slab production line with flow unit method, and the original “independent maintenance” control system and the workshop “digital chemical plant” network management system And so on, become the national concrete products industry benchmark
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Walking into these production bases built with green, intelligent and efficient concepts, almost all of them are “high-tech” sites
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In the 136 meter long and 21 meter wide assembly residential intelligent production workshop, the brush of the automatic mold cleaning machine on the left production line moves slowly against the model
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The light can be seen from the place where it passes
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The mechanical arm automatically lifts the model frame to lay the mold, which is accurately installed around the model through the positioning chip
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The automatic distributor distributes the cloth through accurate weighing without error
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The new type of texturing machine multi-directional mechanical texturing replaces people The level of roughing has reached the leading position in the industry The whole production line is more green and environmentally friendly
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In the segment intelligent production workshop separated by a road, with a site engineering technician pressing the red button decisively, the concrete distribution and vibration system slowly began to automatically and accurately distribute
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The domestic shield segment intelligent production line with the largest diameter of 15.4 meters was under construction, and the intelligent control system was adopted to realize the intelligent linkage management of the whole process from mold cleaning, concrete pouring to steam curing
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More than that, they also add chips to products, realize automatic inspection and receiving through scanning, and provide reliable information for subsequent operation and maintenance
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In production, they fully implemented the management and control mode of shield segment manufacturing process, monitored the production data of reinforcement cage production, concrete pouring, maintenance, storage and other main processes in segment production process, and jointly developed segment intelligent management system app with science and technology companies, realizing the “intelligent” dynamic pipe management system of the whole process, all-round, full coverage and all-weather of segment production in Beijing East Sixth Ring Road Control, with “big data” to help the quality manufacturing
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In 2020, they were assessed by Beijing Municipal Commission of housing and urban rural development as the first in the quality evaluation system of prefabricated components enterprises, which laid a solid foundation for further strengthening and optimizing the prefabricated construction market
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Adhering to the ingenuity of “Industrial Park” to optimize enterprise assets, prefabricated building as the “base” unit of infrastructure construction is one of the important determinants of quality engineering.
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