Deduction and use of an analytical expression for the characteristic curve of a support based on yielding steel ribs

Rodríguez-Montañés, R.; Díaz-Aguado, María B.

doi:10.1016/j.tust.2012.07.006

Cited by 43 publications

(13 citation statements)

References 15 publications

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“…The curve DEI denotes the SCC that characterizes the deformation imposed on the support and its ability to withstand the radially converging pressure (point D) that has occurred since the support was installed. There are many studies on SCC that focus on the transient conditions of supports, progressive hardening, time-dependent properties, and non-linearities [5,6,15,19,[22][23][24]. Numerous studies have explored the analytical solutions of SCC and GRC at equilibrium (point E) under different hypotheses [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…2022, 12, x FOR PEER REVIEW 2 of 13 support was installed. There are many studies on SCC that focus on the transient conditions of supports, progressive hardening, time-dependent properties, and non-linearities [5,6,15,19,[22][23][24]. Numerous studies have explored the analytical solutions of SCC and GRC at equilibrium (point E) under different hypotheses [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Verification and Comparison of Direct Calculation Method for the Analysis of Support–Ground Interaction of a Circular Tunnel Excavation

et al. 2022

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A direct algorithmic process can deal with the solution of the support–ground interaction in a circular tunnel excavation through the convergence-confinement method (CCM) with the concept of increment. This process is the so-called direct calculation method (DCM) that can find solutions, the mobilized support pressure and the convergence, in the analysis of CCM. To achieve the solution, using two linear equations in the elastic region and Newton’s recursive method to find the roots in the plastic region are proposed and realized by a calculated spreadsheet. The validity of the algorithmic process for the analytical solutions was investigated and verified by the finite element computation, and compared with the published results, Rocksupport (2004), Oreste (2009), and Gschwandtner-Galler (2012). The results obtained between DCM and related studies show no significant differences.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Verification and Comparison of Direct Calculation Method for the Analysis of Support–Ground Interaction of a Circular Tunnel Excavation

et al. 2022

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“…In fact, a lot of research has revealed the interaction mechanism between bolts and rocks in a roadway [10][11][12][13]. Some work has also discussed the failure mechanism of roadways with supporting arches such as steel set with I-or U-shaped cross sections [5,14,15]. Little effort has been spent on the combined support action supplied by bolts and arches on the surrounding rocks or interactions among the above three objects.…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanism and Optimization of Arch‐Bolt Composite Support for Underground Mining Tunnel

Mei

Yang

et al. 2020

Advances in Civil Engineering

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Numerical simulation tests were performed on the arch-bolt combined supported mining tunnel through an improved numerical simulation approach. The typical soft rock roadway was took as the background, and the influencing factors such as ground stress level, lateral pressure coefficient, and support type and parameters were considered. The failure mechanism of a semicircular roadway with two straight walls was analyzed; results showed that the arch legs’ inward bending deformation and the arch-rock separation are the breakthrough of the global failure of the supporting system, and rock bolts breakage promoted the failure process. The effects of different controlling measures were analyzed including enlarging the bolt diameter, replacing the conventional bolts with energy-absorbing bolts, and setting arch locking bolts on the arch legs. The field test of the concrete-filled steel tube (CFST) arch-bolt composite support scheme was carried out in a high-stress soft rock roadway, and the results indicate the reliability of the main conclusions.

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“…This made it difficult to install an effective support system [16,17]. Although high-strength bolt (and cables) supports were used, under the effect of soft strata, high ground stress, underground water, mining, and even rock burst [18][19][20][21], the tensile-failure problems of support structures are still very common. Some typical cases are shown in Figure 1 (e.g., in the Xiaojiawa mining area in Shanxi, China).…”

Section: Introductionmentioning

confidence: 99%

An Improved Numerical Simulation Approach for the Failure of Rock Bolts Subjected to Tensile Load in Deep Roadway

et al. 2020

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Our goal was to develop an effective research tool for roadways with significant deformations supported by rock bolts. The improved numerical simulation approach is constructed through additional development of FLAC3D. The aim is to modify the shortcoming that the original model in FLAC3D regards the plastic tensile strain of any arbitrary rock bolt element node as the rupture discrimination criterion. The FISH programming language is adopted to conduct the secondary development and to embed the revised model into the main program of FLAC3D. Taking an actual mining roadway as the simulation object, two simulation schemes adopting the newly improved approach and the original method were conducted, respectively. The results show that (1) the PILE element that constitutes the rock bolt-free section with the maximum elongation rate ruptures after modification, while the rock bolt tendon elongation rate reaches beyond the predefined tensile rupture elongation rate; (2) the modified model in which the rock bolt is mainly subjected to tension realises the tensile rupture phenomenon at the end of the rock bolt-free section and the rock bolt at the junction between the free section and the anchoring section; and (3) only four rock bolts that are in the roadway sides showed rupture in the modified model, and all rock bolts showed rupture in the original model. The tensile failure of the rock bolt led that the modified model scheme is closer to the actual. Compared with the modified model, in the original model, deformation of the surrounding rock masses is severe. This is resulted by the rupture of all rock bolts in the original model. The analysis shows that the improved numerical simulation approach is much more reliable for large deformation roadway behavior with rock bolt support.

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Deduction and use of an analytical expression for the characteristic curve of a support based on yielding steel ribs

Cited by 43 publications

References 15 publications

Verification and Comparison of Direct Calculation Method for the Analysis of Support–Ground Interaction of a Circular Tunnel Excavation

Verification and Comparison of Direct Calculation Method for the Analysis of Support–Ground Interaction of a Circular Tunnel Excavation

Failure Mechanism and Optimization of Arch‐Bolt Composite Support for Underground Mining Tunnel

An Improved Numerical Simulation Approach for the Failure of Rock Bolts Subjected to Tensile Load in Deep Roadway

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