Ultimate strength test device and method for very large floating structure under bending load

Abstract

The invention relates to an ultimate strength test device and method for very large floating structure under bending load, and the device comprises a test platform, wherein both ends of the test platform are respectively installed with a first reaction frame and a second reaction frame, the second reaction frame is installed with an axial loading system by combining a cushion stool and a support beam, a test model is installed between the axial loading system by and the first reaction frame, the axial loading system applies compression load to the test model, and a vertical loading system forapplying bending load for the test model is also included; the method comprises the following steps of making a very large floating structure shrinkage ratio test model according to the scale ratio, performing verification by numerical simulation, performing compression and bending on the shrinkage ratio test model and the test under bending combined loading effect on the test device to obtain test data such as strain, deformation, limit load and end displacement, thereby obtaining the ultimate strength condition of prototype by backward reasoning according to the scale ratio. The ultimate strength test device and method for very large floating structure under bending load provided by the invention provide research basis and reliable technical support for the structural design and optimaldesign of the very large floating structure.

Description

technical field [0001] The invention relates to the technical field of safety and reliability of marine engineering structures, in particular to a test device and a test method for the ultimate strength of a super-large floating body under a bending load. Background technique [0002] Because the super-large floating body bears the joint action of multiple loads such as wind, waves and currents, the modules of the floating body are connected end to end through connectors, and the connectors transmit the load force to the main structure of the super-large floating body through the reinforced area of ​​the connector base. , the ultra-large floating body structure will bear the joint action of complex loads, and the compression and bending loads are its main loads. [0003] Under the action of extreme environmental loads, the super-large floating body will bear the load force that exceeds the maximum bearing capacity of its structure, resulting in structural damage, resulting i...

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Problems solved by technology

[0007] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a reasonable ultra-large floating body ultimate strength test device and test method under bending load, which solves the failure mode similarity method under the plastic state of the scaled model, and guarantees similarity. Under the premise of the criterion, the multi-layer deck structure is simplified to facilitate processing and manufacture, and to ensure that the displacement and rotation angle of the structure are not affected by compression and bending loads, so that the ultimate strength test of the super-large floating body test model is carried out, and the analysis of its reliability is realized. , to provide strong technical support for its structural design and optimal design

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