Pile foundation module loading device under action of complicated loads

Abstract

The invention discloses a pile foundation module loading device under action of complicated loads. The device comprises a main framework; two sets of vertical loading devices which are for loading module structures and two sets of horizontal loading devices which are for loading the module structures are arranged on the main framework; the vertical loading devices are controlled via a hand wheel system, the horizontal loading devices are controlled via a speed regulation motor, and the vertical loading devices are matched with the horizontal loading devices in a noninterference mode; load sensors and forcemeters are arranged on the loading devices; the load sensors are used for measuring the magnitude of loading force of the hand wheel system which is servo-loaded; the forcemeters are usedfor measuring horizontal circulation loading values; a transparent glass panel is arranged on the front part of a main trough body, and experimental process data is collected by a digital camera to detect damage and development trends of a soil mass shear zone; water drainage separation plates are arranged on one side of the main trough body so hydraulic pressure in the gaps of deep soil mass canbe conveniently dissipated; and pulleys are arranged at the bottom of the main trough body so the entire device can be conveniently moved.

Description

technical field [0001] The invention belongs to the field of bridge pile foundation engineering, in particular to a pile foundation model loading device under complex load. Background technique [0002] With the development of my country's economy, a large number of super high-rise buildings are built, and there are a large number of soft soil areas in coastal areas, which have high requirements for the settlement and stability of high-rise buildings. Therefore, a new foundation form is needed as an optimal solution to this engineering problem. Due to the low bearing capacity of shallow soil in coastal areas of my country, the advantages of raft foundation and pile foundation are fully utilized in the construction of high-rise buildings, and a new form of pile-raft foundation is proposed, which can be used as a solution to the problem of high-rise building settlement and insufficient bearing capacity. However, the current research work on the mechanical properties and failur...

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Problems solved by technology

However, the current research work on the mechanical properties and failure modes of the new piled raft foundation under horizontal, vertical and cyclic loads is still shallow, and there is no effective test instrument to test the compressive and uplift bearing characteristics of the piled raft foundation. There is no effective monitoring method for pile-soil failure shear zone

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