Vibration table model test device capable of simulating interaction between grouting anchor rod and tunnel lining

Abstract

The invention discloses a vibration table model test device capable of simulating interaction between a grouting anchor rod and a tunnel lining. The device comprises a tunnel lining template and a segment combined type grouting anchor rod, the tunnel lining template comprises a lining inner template, a lining outer template, a model bottom plate and a model top plate, and grouting anchor rod spaceorientation holes are formed in the lining inner template and the lining outer template such that specific preformed holes can be formed after the pouring and maintenance of the tunnel lining model are completed; the segment combined type grouting anchor rod is formed by splicing grouting anchor rod segment components, after the pouring and maintenance of the tunnel lining model is completed andthe tunnel lining model is placed in a model stratum, the anchor rod segment components are connected with the tunnel lining model through the specific preformed holes in the tunnel lining model, andfinally, an overall structure is formed. The standardized manufacturing of the tunnel lining model and the grouting anchor rod can be achieved, the flexible arrangement of the grouting anchor rod is achieved, different anchoring requirements are met, the two working states of drilling and grouting of the grouting anchor rod in the model stratum are simulated, and finally, the purpose of simulatingthe interaction of the grouting anchor rod and the model stratum under earthquake loads is achieved.

Description

technical field [0001] The invention belongs to the field of tunnel engineering tests, in particular to a shaking table model test device capable of simulating the interaction between a grouting anchor rod and a tunnel lining, and is particularly suitable for simulating the interaction between a grouting anchor rod and a tunnel lining in a shaking table model test. Background technique [0002] With the frequent occurrence of tunnel earthquake damage, people pay more and more attention to the study of its seismic performance. The shaking table model test is to make a tunnel model through the similarity theory, including the tunnel lining model and the surrounding rock model of the formation, apply seismic waves to the shaking table surface, simulate the dynamic response of the tunnel model under the seismic load, and measure the test data at the same time, such as formation acceleration and dynamic earth pressure , lining dynamic strain, etc., to observe the damage status of...

AI Technical Summary

Problems solved by technology

The traditional tunnel shaking table model test only realizes the simple combination of the tunnel lining and the surrounding rock of the formation, and simulates the interaction and final failure of the two under the seismic load, which cannot reflect the role of the grouting bolt in improving the seismic performance of the tunnel.

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