Rigid connection device and assembly method for pile and cap for pile foundation model test

Abstract

The invention discloses a rigid connection device and an assembling method of a pile and a bearing platform used for a pile foundation model test, comprising a precession device and a measurement system; the measurement system includes a core-through pressure sensor and a data acquisition system; the The screw-in device includes a casing, a plug, a connecting plate, a nut and a base; the connecting plate is used as a bearing platform, and a through hole is opened on it, and the casing is used as a test pile, and its upper and lower parts are respectively provided with threads , the upper part of the sleeve is matched with the lower part of the plug, the lower part of the sleeve is matched with the base, the upper part of the plug is inserted into the hole of the connecting plate after passing through the core through pressure sensor, and the top part is matched with the nut. The bushing is fixed on the connecting plate; the through-core pressure sensor is connected with the data acquisition system. The invention studies the bearing characteristics of the pile group in the model test of the pile foundation, and solves the technical problem of how the pile and the bearing platform are rigidly connected.

Description

technical field [0001] The invention relates to a rigid connection device for piles and caps used for pile foundation model tests and an assembly method thereof. Background technique [0002] The pile foundation model test refers to the actual working state of the pile foundation, establishes a model with a certain similarity to the prototype, relies on sophisticated scientific instruments and equipment, artificially controls the test conditions, and studies the behavior of the pile foundation under certain or certain specific conditions. Test of load bearing properties. [0003] The model pile material should meet the following requirements: it can better reflect the stiffness difference between the pile body and the soil around the pile, and can properly reflect the roughness of the pile-soil contact surface; it is easy to process and arrange test components. When the model pile is large, the reinforced concrete pile or steel sheet pile with the same elevation as the prot...

AI Technical Summary

Problems solved by technology

At present, many scholars use the casing as the test pile body, and the connecting plate as the cap. However, the rigid connection method between the pile and the cap is a problem that the testers need to consider. If it is not considered properly, it is easy to deviate from the prototype, and it is difficult to draw a similar rule. , in order to ensure the smooth progress of the test process, it is urgent to invent a rigid connection device for piles and caps used in pile foundation model tests

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