Research on Mechanical Property and Economic Effect of Contractible Concrete Filled Steel Tube Support

Hui Li; Bei Jiang; Bin Yang; Qi Wang; Hong Tao Wang; Zhi Li; Wei Teng Li

doi:10.4028/www.scientific.net/AMM.90-93.722

Paper Titles

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Determining the Contact-Length and Critical-Value for Deformed Foundation with Curvature Variation in Mining Area
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Research on Mechanical Property and Economic Effect of Contractible Concrete Filled Steel Tube Support
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Analysis of Slope Stability for West Project of Side Slope in XiaoLongtan Opencast
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Seepage Analysis for Qianjiangping Landslide Applied Three Gorges Reservoir Water Level and Heavy Rainfall
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93Research on Mechanical Property and Economic...

Research on Mechanical Property and Economic Effect of Contractible Concrete Filled Steel Tube Support

Abstract:

The finite models of U-steel support, grid steel frame, hollow steel tube support and concrete filled steel tube support were established, of which mechanical property and influencing factor such as bearing capacity, support effect etc. was analyzed. Comparative analysis of economic benefit was carried out through research of material dosage and support effect index. The contractible joint for concrete filled steel tube was designed, and their mechanical characteristic was analyzed through test. The results show that the supporting performance of concrete filled steel tube support is related to confinement coefficient. Compared with traditional support, the concrete filled steel tube support has high bearing capacity, intensive later strength, good ductility, various standards and well economic benefits, and in conjunction with contractible joint, it is able to implement functions of quantitatively increasing resistance and yielding. Properly designed through optimization analysis on associated effects, the concrete filled steel tube support can meet supporting demand of deep soft rock and joint broken rock.

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Periodical:

Applied Mechanics and Materials (Volumes 90-93)

Pages:

722-727

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.90-93.722

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Online since:

September 2011

Authors:

Hui Li, Bei Jiang, Bin Yang, Qi Wang, Hong Tao Wang, Zhi Li, Wei Teng Li

Keywords:

Concrete-Filled Steel Tube (CFST), Contractible Joint, Economic Effect, Support

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