5results about How to "Reduce field work time" patented technology

The utility model relates to a prefabricated middle partition wall structure of a tunnel ventilation inclined shaft. The prefabricated middle partition wall structure at least comprises a bottom supporting structure, a steel supporting assembly and a prefabricated modular wallboard. A positioning groove is formed in the top face of the bottom supporting structure, and the bottom of the steel supporting assembly is embedded into the positioning groove and fixed. The prefabricated modular wallboard is formed by splicing a plurality of prefabricated slabs, the adjacent prefabricated slabs are connected through tongue-and-groove structures which are matched in a concave-convex mode, and the tongue-and-groove joints are filled with sealing materials. The steel supporting assemblies are longitudinally arranged at intervals, and the tops of the steel supporting assemblies are fixed to a tunnel lining to form a steel-concrete combined structure for supporting the prefabricated modular wallboard. The steel supporting assembly and the prefabricated modular wall plate form a steel-concrete prefabricated structure, and the stability of the whole structure is enhanced. By adopting the autoclaved aerated concrete precast block material and the concave-convex groove embedded modular structure, the problems that the construction quality is difficult to control, the construction period is long, the on-way resistance of air flow is large and the like in the existing reinforced concrete mid-partition wall are solved.

This invention discloses a method and system for joint advanced prediction and detection of tunnel face and borehole ground-penetrating radar. It mainly includes: developing an integrated host for tunnel face and borehole ground-penetrating radar, achieving joint data acquisition from both; utilizing the tunnel face ground-penetrating radar to emit electromagnetic waves, with one antenna of the borehole radar emitting electromagnetic waves, and the other antenna of the borehole radar and the tunnel face ground-penetrating radar receiving the electromagnetic waves. This application designs a joint observation system for tunnel face ground-penetrating radar and borehole radar, achieving omnidirectional, multi-angle ray coverage and increasing the amount of observation data; deriving calculation formulas for tunnel ground-penetrating radar forward modeling, the adjoint state method, the objective function, and the inverse error function, achieving full waveform inversion of tunnel ground-penetrating radar; and enabling near-three-dimensional fine detection and imaging of adverse geological bodies such as karst caves and fractured bodies in front of the tunnel face.

This invention discloses a method for corrosion protection of reinforced composite piles, relating to the field of composite pile corrosion protection. The method includes the following steps: designing a steel mold system, including an upper mold, a lower mold, and a retaining structure; forming a composite pile comprising a reinforcing cage and a pile head disc; placing the reinforcing cage inside the lower mold, with pile head discs connected to both ends of the reinforcing cage, the ends of the reinforcing cage passing through the pile head discs and secured with fasteners; spraying an anti-corrosion coating on the inner walls of the upper and lower molds, and after inspection and acceptance, closing the mold using the retaining structure; installing spherical clamping fittings in the central holes of the pile head discs on both sides of the formed composite pile, and casting to form the pipe pile body; transporting the formed composite pile with the steel mold to a steam curing chamber for curing; upon reaching the curing age, testing the strength of the formed composite pile, and after passing the test, removing the mold and transporting it to the site for use. The purpose of this invention is to address the aforementioned problems of traditional pipe piles, aiming to achieve corrosion protection during casting.

The utility model relates to a truss assembly jig frame, belongs to the technical field of building construction, and particularly relates to an adjustable assembly type truss assembly jig frame which comprises a base transverse rod and a truss and further comprises a base transverse rod. The supporting vertical rods are installed at the bottom of the base transverse rod through bolts in a threaded mode, and a pair of supporting vertical rods are installed on the base transverse rod in a threaded mode; the number of the lug plates is multiple, and the lug plates are arranged on the surface of the base cross rod and one side of the supporting vertical rod; the T-shaped steel plate is welded on one side of the cross rod of the base; according to the utility model, the effects of no need of welding and repeated use are achieved, and the problems that the existing jig frame design is suitable for a conventional truss, but the requirement for supporting a special-shaped structure or an ultra-large span is possibly insufficient, the adjustment depends on a gear rack system, and the locking mechanism is possibly abraded and the risk of loosening is generated due to long-term use or frequent adjustment are solved.

The utility model discloses an overhead transmission line steel pipe pole structure with a top sealing plate with a line hanging function, which comprises a pole body, a plurality of cross arm structures are symmetrically arranged on the pole body, a ladder stand is arranged on the pole body, and an anti-climbing device is arranged at the bottom of the ladder stand. Compared with the prior art, the utility model has the advantages that the structure is simple, and the use is convenient; wire hanging is integrated, wire hanging holes are directly formed in the top sealing plate, the welding procedure is omitted, cost is reduced, and reliability is improved; the anti-load capacity is high, the variable cross-section rod body and the flange base are designed, and through experimental verification, 34.329 kN transverse wind load and 25.186 kN longitudinal wire tension can be borne; the cross arm and the pole body are in modular connection, and the crawling ladder is inserted and mounted, so that the field operation time is shortened; the safety is high, and the service life is prolonged due to dual protection of climbing thorn prevention and a hot-dip galvanizing process.