High-strain detection super-large hammer self-beating device and application method

Abstract

The invention relates to the technical field of engineering technology detection, in particular to a high-strain detection super-large hammer self-beating device and an application method. The high-strain detection super-large hammer self-beating device comprises a hammer frame, and is characterized in that the hammer frame is provided with a hydraulic lifting device, and the hammer frame is internally provided with a pulley assembly connected with the hydraulic lifting device, an inner unhooking device arranged on the pulley assembly, and an outer unhooking device arranged on the outer side of the hammer frame and connected with the inner unhooking device; hammer body ascending and descending are achieved through the pulley assembly via the hydraulic lifting device, and the inner unhooking device and the outer unhooking device achieve automatic unhooking and automatic heavy hammer hoisting through ascending and descending of a hammer body. The high-strain detection super-large hammer self-beating device and the application method have the beneficial effects that the using cost is low, convenience and rapidness are achieved, and practicability is high.

Description

technical field [0001] The invention relates to the technical field of engineering technology detection, and more specifically, to a self-striking device for a super sledgehammer for high strain detection and a method for using it. Background technique [0002] High-strain detection is a detection method that uses a heavy hammer to impact the pile top, measures the velocity and force time-history curves of the pile top, and analyzes the vertical compressive bearing capacity of a single pile and the integrity of the pile body through wave theory analysis. At the present stage, when the high-strain detection method detects foundation piles, in order to generate a certain relative displacement between the pile and the soil, a large amount of energy needs to act on the pile, so the top of the pile must be hammered with a heavy hammer, which produces a large impact The force needs to be raised to a certain height. [0003] At the present stage, most of the heavy hammers are in t...

AI Technical Summary

Problems solved by technology

[0003] At the present stage, most of the heavy hammers are in the tens of tons level, and a large crane is required to lift the heavy hammers during the test. However, because the heavy hammers are decoupled in an instant, the load of the cranes changes drastically, which has a large impact on the cranes and will affect the cranes. structural damage

At the same time, because the crane does not have a limiting structure to limit the hammer body during the lifting process, it may cause the central axis of the hammer body to not coincide with the central axis of the pile foundation to be tested, and the test will cause uneven force on the pile foundation to be tested, affecting high strain Test Accuracy

At the same time, due to the high cost of using the crane, it will have a certain impact on the benefit and affect the practicability

Images