A dynamic loading device for model testing of pile-supported towering structures

Abstract

The invention belongs to the technical field of test equipment for construction, and relates to a power loading device for a towering structure model test of a pile bearing. The track-type gear horizontal power loading device includes an active force applying gear, a passive force applying gear, a mass block, a transmission shaft, a transmission gear, Speed-regulating motor loading system, CNC circular track and splint-type pallet, gear vertical power loading device includes force-applying gear pair, mass block, transmission gear, transmission shaft, speed-regulating motor loading system and cylindrical pallet, of which the force-applying gear pair , mass block, transmission gear, transmission shaft, and speed-regulating motor loading system are all the same as the track-type gear horizontal power loading device; the cylindrical tray replaces the splint-type tray and the sliding head and ring track of the CNC ring track; its structure is simple and easy to operate. Convenience, low cost, small footprint, can provide vertical loading and 360-degree real-time variable horizontal cyclic loading, simulate the coupling effect of various loads, and more realistically simulate the load situation of pile-bearing towering structures.

Description

Technical field: [0001] The invention belongs to the technical field of test equipment for construction, and relates to a dynamic loading device for a model test of a pile-bearing towering structure. Background technique: [0002] With the rapid development of engineering technology in our country, various types of towering structures have appeared. Towering structures refer to structures with large heights and relatively small cross-sections. Load, horizontal load is also the main basis for its structural design. The field experiment is to study the pile-supported towering structures, but it is difficult to carry out due to the shortcomings of long period, large test investment, and many influencing factors. Therefore, the indoor model test has become an important technical means to study the mechanical performance of the pile-supported towering structures. . The loading system is an indispensable and important part of the model test, which provides the penetration power ...

AI Technical Summary

Problems solved by technology

Most of the traditional loading methods ignore the spatial variability of the load, concentrate the load on one particle, and only apply cyclic loads in a certain direction alone, which cannot truly simulate the load conditions during the service of the pile foundation, and require counterforce rack provides loading reaction force

The reaction frame is less flexible, has a single loading direction, occupies a large area, and is complicated to operate, which increases the difficulty and reduces the accuracy of the model test.

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