2 results about "Arch height" patented technology

This utility model discloses a corner support device for the arched formwork of the secondary lining of a mined tunnel, comprising: an upper support component including a U-shaped top support with a screw rod below it and an adjustable support rod rotatably mounted on the screw rod; a lower support component including a diagonal support rod, which is tubular, with its upper end set as a horizontal plane and its lower end set as a slope; and a vertical connecting fastener with a vertical rod inside. The adjustable support rod of this utility model is rotatably mounted on the screw rod through its internal threaded connecting part, achieving precise adjustment of the support height, adapting to the construction needs of different arch heights, and reducing the risk and difficulty of repeated high-altitude adjustments.

This invention discloses a rapid installation method for a large-span, double-limb combined tensioned beam structure, belonging to the field of steel structure installation and construction technology. The invention involves processing the tensioned beam as a whole in the workshop and then segmenting it at 1 / 3 and 2 / 3 of its length before transporting it to the construction site. One of the steel columns is cut into a column head and a column body below the column top. The column head and the tensioned beam's ear plate unit are then assembled on the ground using pins. The beam is assembled into a whole according to the designed arch height, and an infrared monitoring system is used to control the assembly accuracy in real time. Temporary fixing measures, such as positioning baffles, are set at the joint between the column head and the column body. After the tensioned beam is hoisted into place, the pins are connected, and then the column head and column body are welded together. This invention, through ground assembly, precise infrared monitoring, temporary positioning, and delayed ear plate welding, effectively eliminates hoisting deformation and installation deviations, increases the first-pass perforation rate of the pins, avoids the risk of enlarged holes, and significantly improves installation efficiency and structural safety.