Spiral Anchor Pullout Testing Device for Submarine Slope Sites
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Solution Overview
Problem
Current anchor plate foundation tests are inadequate for simulating the complex pullout resistance and failure modes of spiral anchors in submarine slope sites due to their two-dimensional nature, which does not accurately represent the complex marine geological environment and varying pulling angles.
Innovation Solution
A pullout resistance measuring device and method that simulates the pulling of a spiral anchor at any space angle in a submarine slope site, utilizing a support, moving beam, hoisting mechanism, cylinder device, pulley assembly, soil sample, and force measuring device to accurately assess the pullout bearing capacity and failure mechanisms of spiral anchors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a two-dimensional anchor plate test device is used, then the test structure is simple, but it cannot accurately simulate the complex pullout resistance and failure modes of spiral anchors in submarine slope sites
Solution Approach 1:
The patent transitions from a two-dimensional test platform to a three-dimensional test device that can simulate submarine slope sites. The device includes a movable beam system that can position test samples at different heights and angles, enabling three-dimensional spatial arrangement to accurately replicate the complex pullout resistance and failure modes of spiral anchors in submarine environments.
2Measurement precision
If a three-dimensional test device is developed to simulate submarine slope sites, then the measurement accuracy is improved, but the device complexity increases
Solution Approach 1:
The three-dimensional test device is divided into multiple independent functional modules: a support structure, a movable beam system with two degrees of freedom, a hoisting mechanism, a cylinder device, a pulley assembly, and a force measuring device. Each module performs a specific function, making the complex system manageable and easier to operate while maintaining high measurement accuracy.
Solution Approach 2:
The test device incorporates dynamic elements including a movable beam that can shift position along horizontal directions, a hoisting mechanism that can adjust vertical positions, and a pulley assembly that can change angles. These dynamic components enable the device to adapt to different test configurations and simulate various pulling angles and soil layer conditions in submarine slope sites.
3Ease of manufacture
If indoor model tests using spiral anchor foundations are conducted, then the pullout bearing characteristics can be analyzed, but the test results cannot be directly applied to actual submarine slope sites due to differences in stress states
Solution Approach 1:
The test device allows systematic variation of critical parameters including pulling angles, soil layer thickness, and sample positioning to match different submarine slope site conditions. By adjusting these parameters, the indoor model tests can replicate the complex stress states and failure modes occurring in actual marine environments, making the test results reliable and directly applicable to project design and construction.
Data Source
AI summary
The present invention discloses a pullout resistance measuring device and method based on an anchor plate foundation of a submarine slope site. The measuring device includes a support, a moving beam, a hoisting mechanism, a cylinder device, a pulley assembly, a soil sample, a spiral anchor, a traction rope and a force measuring device, where the moving beam is movably mounted on the support; the hoisting mechanism is movably mounted on the moving beam; the cylinder device includes a cylinder; the pulley assembly is movably mounted on the cylinder corresponding to the vertical slit; the soil sample is filled in the cylinder; the spiral anchor is buried in the soil sample; one end of the traction rope is connected to the hoisting mechanism, and the other end is directly connected to the spiral anchor; and the force measuring device is arranged on the traction rope.