A new breakthrough has been made in the key technology of prefabricated electric power pipe gallery construction in China

Learned from shandong university of science and technology, by shandong university of science and technology, China railway no.In seven tiger academician of money for the leader of the Chinese society of rock mechanics and engineering historical agree that research results has reached the international advanced level, marked the our country prefabricated power integrated utility tunnel construction is the key technology for the new breakthrough, in the prefabricated production technology and electric power utility tunnel Fang Han components assembling positioning technology reached the international advanced level.

In the past, the problems of "link", "spider network" and pipeline accidents have been criticized. With the continuous progress of China's new urbanization process, innovative solutions are needed to solve the problems of "link" and "spider network".

Prefabricated composite pipe gallery, as a modern and industrialized construction method of composite pipe gallery, ADAPTS to the development trend and requirements of urban infrastructure construction in China.Shandong university of science and technology has made a great breakthrough in the research on the key technology of urban prefabricated power pipe gallery construction.The prefabricated composite pipe gallery has the advantages of good quality, short on-site construction period, small environmental impact, large reduction of formwork and support, labor saving and so on.

In terms of tube corridor construction, people no longer limited to the traditional cast-in-place tube corridor, but invented prefabricated tube corridor.The main structural members of the precast concrete plant in the production, transportation to the site, through mechanization hoisting, assembly molding.Supported by the national natural science foundation of China and the key research and development program of shandong province, the research group led by professor wang qingbiao of shandong university of science and technology carried out in-depth research and made significant innovations and breakthroughs.

The research group developed the formwork of prefabricated pipe gallery members, established the vertical production technology of prefabricated members, and solved the problem of honeycomb pockmark surface of traditional prefabricated culvert bottom plates.The casting and forming technology of prefabricated power pipe gallery members is established, and an air-expelling vibrator device is designed, which solves the problem of gas in prefabricated pipe gallery members and improves the compactness and flatness of concrete.The steam curing technology of prefabricated power pipe gallery components was developed, and the steam curing pipe and curing cover of prefabricated power pipe gallery components were designed, which solved the problems of long curing period and low production efficiency of prefabricated power pipe gallery components.The construction technology system of prefabricated power pipe gallery is established and the new installation and positioning device of prefabricated power pipe gallery is designed.The prestressed connection technology is established to solve the technical problem of connection between pipe joints.The waterproof technology of splice joints between prefabricated power pipe corridors is established, and the tongue-and-groove connection is adopted. The waterproof structure of splice joints of prefabricated power pipe corridors is designed to solve the seepage problem of prefabricated pipe corridors.The waterproof technology of prefabricated power pipe gallery material is established, and the composite waterproof strip used for the joints of prefabricated pipe gallery members is designed to solve the problem of water seepage.

Since 2017, shandong iron and steel group co., LTD., shandong sunlight metallurgical design institute co., LTD., China railway shisiju group second engineering co., LTD and other units to use the technology, the new annual produce nearly one hundred million yuan, has obtained the remarkable economic benefits and social benefits, for future prestressed assembly type underground utility tunnel construction provides a better promotion value.