A method for detecting the overall preload of hanging basket

Abstract

The invention discloses an integral preloading system for a hanging basket. A first layer of shaped steel is laid on the square wood, a second layer of shaped steel is laid on the first layer of shaped steel, a third layer of shaped steel is laid on the second layer of shaped steel, and a third layer of shaped steel is laid on the third layer of shaped steel. The fourth layer of profiled steel, the fifth layer of profiled steel transfer beam is laid on the fourth layer of profiled steel, the heightening profiled steel is laid on the inner box square timber of No. Lay the second layer of steel on the first layer of steel in the inner box of the beam section, lay a beam on the fifth layer of steel transfer beams on the left and right sides, and lay a beam on the second layer of steel in the inner box of the beam section, and install a jack on the beam. Its detection methods include assembling, stacking preloading section steel system, setting up preloading observation points, installing strain gauges, grading, synchronizing, preloading, inspection, and sorting out data. The invention does not need any embedded parts, disperses the pre-pressure, has simple construction, short construction period, high safety factor, and can be tested by simulating the hanging basket system.

Description

technical field [0001] The invention belongs to the technical field of bridges, and in particular relates to a method for detecting an integral preload of a hanging basket. Background technique [0002] The continuous beam (steel structure) bridge is generally constructed by the cantilever pouring method. The main equipment of the cantilever pouring method is a pair of walking hanging baskets. Stress is carried out on it. After the hanging basket system is assembled on the No. 0 beam section, it is necessary to carry out a pre-compression test on the hanging basket system to test its quality, verify its safety, eliminate its inelastic deformation, and measure the elastic deformation value of the hanging basket system for subsequent construction. Provide evidence. At present, the commonly used methods of preloading hanging baskets include sand bag preloading method, water tank preloading method, steel strand tensioning preloading method, jack reaction frame preloading metho...

AI Technical Summary

Problems solved by technology

This method can only perform preload detection on the main truss of the hanging basket, but not on the bottom blue of the hanging basket; it cannot consider the influence of the hanging basket's own weight, and cannot fully simulate the stress state of the hanging basket

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