内置碳钢不锈钢管海洋混凝土柱轴压试验及承载力计算

doi:10.11896/cldb.22100018

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Abstract To investigate the axial compressive behavior of marine concrete filled stainless steel tube column and built-in carbon steel marine concrete filled stainless steel tube columns, a total of 10 specimens were tested under axial loads. The mechanical failure process and morphology of the specimens were observed, and the axial load-displacement curve and the strain curve of each steel were obtained. Based on the test data, the influence of various variation parameters on the ultimate bearing capacity, axial ductility, energy dissipation capacity and damage development of kinds of specimen was analyzed. The results show that the failure modes of specimens are local buckling and wrinkle of stainless steel tube and oblique shear failure of concrete. The built-in carbon steel can improve the ultimate bearing capacity, axial ductility and energy dissipation capacity of the specimen, and inhibit the damage development of the specimen. Under the condition of increasing the same weight of steel, with the increase of content of circular steel tube, the axial compression performance improved most; the calculated value of bearing capacity based on the calculation formula of ‘composite constraint superposition method' is in good agreement with the experimental value.

Key words： stainless steel tubular ocean concrete built-in carbon steel axial compression bearing capacity calculation

Published: 25 June 2024 Online: 2024-07-17

CLC number:

TU398.9

Fund:National Natural Science Foundation of China (51578163), Special Fund Project for ‘Bagui'Scholars([2019]No.79), the Guangxi Science and Technology Base and Talent Project (Guike AD21075031), the Central Project Guide Local Science and Technology for Development (Guike ZY21195010), the Guangxi Key R & D Program Project (Guike AB21220012), Innovation Project of Guangxi Graduate Education (YCBZ2022026).

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	CHEN Zongping
	LI Jiancheng
	ZHOU Ji

Cite this article:

CHEN Zongping,LI Jiancheng,ZHOU Ji. Axial Compressive Behavior and Bearing Capacity Calculation of Marine Concrete Filled Stainless Steel Tube Columns with Built-in Carbon Steel Under Axial Compression[J]. Materials Reports, 2024, 38(12): 22100018-9.

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http://www.mater-rep.com/EN/10.11896/cldb.22100018 OR http://www.mater-rep.com/EN/Y2024/V38/I12/22100018

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