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627 results about "Arch supports" patented technology

Arch supports are devices that are placed into one’s shoes to support the arch and diminish or eliminate pain.

Method for dismantling arch bridge for protection

The invention provides a protective method for removing an arch bridge, which belongs to the technology field of bridge removal. The method aims to provide a protective bridge removal method with safety, high efficiency and no pollution. The technical points include: building up a new trestle, erecting a gantry crane, carrying out the bridge removal in a reverse order of the bridge building including bridge decking, coping, column, beam, arch rib and arch support in sequence. The removal stage of the arch rib especially includes removing by adopting methods of top-supporting under the arch, arch box transverse stop and horizontal restraining rope, which better solves the difficult problem of the protective bridge removal with safety, high efficiency and no pollution in a complex construction environment of guaranteeing under-arch navigation, high security level, short construction period and various unpredictable elements, manages to meet the design requirements of the removal safety factor in the protective bridge removal process and the limit control under various removal working conditions and guarantees the removal quality and the construction safety. The removal method has low cost and remarkable social benefit reflected in the direct economic analysis, which is a protective removal method of large-span bridges with safety, high efficiency and practicability.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD +1

Large-span steel truss arch construction method

The invention relates to a large-span steel truss arch construction method. The invention is characterized in that the method comprises the following steps: 1) based on the alignment design of an main arch ring of a reinforced concrete arch bridge, if a main arch span of the reinforced concrete arch bridge is not more than 100m, an arc line is adopted as the line shape of a arch axis line of the steel truss arch; if the main arch span of the reinforced concrete arch bridge is more than 100m, a catenary line or a parabola curve is adopted as the line shape of the arch axis line of the steel truss arch; big samples of a first unit truss segment and a second unit truss segment are produced for steel truss arch ribs on a sample platform according to the scale of 1:1; 2) the inner side of a first main arch support is widened to form a first base of the steel truss arch, the inner side of a second main arch support is widened to form a second base of the steel truss arch; 3) the erection sequence of the unit truss segments is that: first arranging steel truss arch ribs on the upper course of a river, then arranging steel truss arch ribs in sequence to the lower course of the river; 4) the back arch elevation of the steel truss arch is adjusted to the level of the arch soffit elevation of the main arc ring. The construction method is not limited by the terrain condition and site condition of bridge location and is simple and easy to install and remove.
Owner:CHINA FIRST METALLURGICAL GROUP
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