Distributed load applying device and method for tunnel lining

Abstract

The invention discloses a distributed load applying device and method for a tunnel lining. The device comprises load distribution systems, a load transmission system and a load control system. The number of the load distribution systems is multiple, the load distribution systems are connected with a tunnel lining model through reaction frames, the load distribution systems are communicated with the load transmission system through connecting pipes, the load transmission system is provided with balancing weights, and the balancing weights are connected with the load control system. According to the device, pressure generated by the balancing weights on the liquid serves as a load source, cosine-form load application is achieved by controlling the distribution of the balancing weights, and local loading and load shedding can be completed at the same time. The device is suitable for tunnel lining small structure model tests, and can apply cosine distribution load to a lining structure; and the system is simple and the experiment accuracy is high.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction monitoring, and relates to an indoor structural model test of tunnel lining, in particular to a device and method for applying distributed load to tunnel lining, which can be used for small-scale structural model tests of tunnel linings constructed by mining method or shield method. Loading provides technical support. Background technique [0002] In the process of tunnel construction and operation, the bearing performance and safety status of the tunnel lining structure has always been the core content of the traffic construction and management departments, especially in complex conditions such as long-span, deep-buried, and underwater tunnels across rivers and seas. The occurrence of diseases and disasters such as cracking of the tunnel lining structure, water leakage, partial block loss, and overall collapse during operation has greatly promoted the tunnel and undergroun...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a distributed load application device and method for tunnel lining. The pressure generated by the counterweight on the liquid is used as the load source of the small tunnel lining model and the counterweight around the tunnel lining model is controlled. The application of cosine form load is realized by block distribution, which is suitable for the small structure model test of tunnel lining, and the cosine form distribution load can be applied to the lining structure, which solves the problems of complex loading system and low utilization rate of experimental equipment in the prior art

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