Parametric assessment of soil-nailing retaining structures in cohesive and cohesionless soils

Ghareh, Soheil

doi:10.1016/j.measurement.2015.05.043

Cited by 32 publications

(12 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To offset the shear force F a , F b and moment M a , M b under the load on both ends of the beam, it is assumed at first that there are two pairs of boundary condition forces F A , M A and F B , M B on the outside of both end sections of the beam, and then, the internal force can be solved by equations (10) to (13).…”

Section: Internal Force Analysis Of the Finite-length Beammentioning

confidence: 99%

“…China possesses many mountainous areas, and the safety of people's lives and property is seriously threatened by landslides and slope instability [7,8]. erefore, a large number of experts and scholars are engaged in the study of slope reinforcement technology, and a variety of support forms have emerged successively, such as retaining walls [9], soil-nail retaining structures [10], antislide piles [11], anchors [12], and anchor cable lattice beams [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Internal Force Analysis and Field Test of Lattice Beam Based on Winkler Theory for Elastic Foundation Beam

Zhu

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

As a new flexible supporting structure, prestressed anchor cable lattice beams have been widely used in high-slope support engineering and have achieved good results. However, theoretical research on the internal force analysis of lattice beams is far behind engineering practice. Based on the theory of the Winkler elastic foundation model, a mechanical model of a prestressed anchor cable lattice beam at the tension stage was established. Considering the nonhomogeneous lattice beam materials, a calculation method was given and applied to engineering examples. A calculation method of the measured moment was introduced in the field test conducted in the Zhouqu County “8·8” debris flow disaster reconstruction project. Comparisons between the test results and the theoretical results were performed. The results showed that the theoretical results of the distribution trend of the lattice beam moment were consistent with the test results, which verified the rationality of the proposed calculation method. The inertia moment of the beam section solved by the transformed section method was more realistic. The results of the transformed section method could improve the bending resistance of the lattice beam and reduce the reinforcement ratio. The greater the anchoring force was, the more obvious the lifting effect was. The anchoring force was an important influencing factor of the internal force of the lattice beam. The greater the anchoring force was, the greater the lattice beam moment was, and they showed the same proportional change phenomenon. Compared with the theoretical moment, the measured moment obtained by the test was smaller, which indicated that the lattice beam of the tested slope was safe at the present stage.

show abstract

Section: Internal Force Analysis Of the Finite-length Beammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Internal Force Analysis and Field Test of Lattice Beam Based on Winkler Theory for Elastic Foundation Beam

Zhu

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…In-plane stiffening techniques with nail plates or CFRP strips for timber floors in historical masonry buildings [4] The paper investigates two strengthening techniques for timber floors in historical masonry buildings. These alternative solutions may be used to enhance in-plane stiffness and strength of existing wooden floors.…”

Section: Analysis Of Shallow Instabilities In Soil Slopes Reinforced mentioning

confidence: 99%

A Review of Soil Nailing

2017

IJAERD

View full text Add to dashboard Cite

Foundation failure can cause the building to fall down. Repair of defects in foundations are most difficult and very costly, so it is most significant to understand the types of foundation failure to avoid them by taking required steps before construction starts. The main aim of this research is to bring soil stability in area where landslides might be a problem by inserting carbon rods in place of steel reinforcement bars in yellow type soil. Carbon fiber reinforced polymer, carbon fiber reinforced plastic or carbon fiber reinforced thermoplastic (CFRP, CRP, CFRTP or often simply carbon fiber, or even carbon), is an extremely strong and light fiber-reinforced plastic which contains carbon fibers.

show abstract

“…Soil nailing is a low cost, easy construction and common technique used all over the world for enhancing the stability of retaining walls, slopes, and excavations, and it is usually used for temporary or permanent earth retention (Yuan et al 2003;Holman and Tuozzolo 2009;Ghareh, 2015). Basically, soil nailing is an in situ ground reinforcement technique which consists of introducing a series of reinforcing elements, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to anchors and tiebacks (Ehrlich and Silva 2015), nails are passive elements which are not posttensioned after installation and only mobilize their reinforcing effect when ground movements occur (Sheahan 2000;Sheahan and Ho 2003). Nails are subjected mainly to tension forces but may develop shear forces and resist bending moments when are oriented counterclockwise to the normal direction of the slip surface (Fan and Lou 2008;Ghareh 2015). Reinforcing bars, i.e.…”

Section: Introductionmentioning

confidence: 99%

Designing Soil-Nailed Walls Using the Amherst Wall Considering Problematic Issues during Execution and Service Life

2019

View full text Add to dashboard Cite

Soil nailing is a technique commonly used as temporary or permanent earth retention system in soft soils.Habitually the design of a soil nailing focuses on its performance at failure, computing a safety factor, and thus neglecting ground deformations. In this paper, an analysis and comparison of the convenience of the use of the limit equilibrium method and the finite element method for designing a soil nailing is conducted. The assessment considers both the suitability of an easy and fast design process, and the necessity to take into account issues such as ground deformations to avoid problematic consequences that can arise during their execution phase and service life. For performing the analyses a numerical study of the "Amherst wall", a full-scale soil nailed wall built to be an experimental test in last years of the twentieth century, is carried out.A two-step process for designing soil nailed walls is proposed. The first step involves the use of limit equilibrium methods to define the main parameters. The second step deals with the development of a finite element model to consider ground deformations as well as to determine nail forces. An approach based on the use the Mohr-Coulomb model for simulating materials more similar to granular soils and the Hardening Soil model for simulating materials more similar to cohesive soils is also presented in the paper as an answer to numerically model soil-nailed walls in ground situations where the soil is neither pure cohesive nor pure granular.

show abstract

Parametric assessment of soil-nailing retaining structures in cohesive and cohesionless soils

Cited by 32 publications

References 13 publications

Internal Force Analysis and Field Test of Lattice Beam Based on Winkler Theory for Elastic Foundation Beam

Internal Force Analysis and Field Test of Lattice Beam Based on Winkler Theory for Elastic Foundation Beam

A Review of Soil Nailing

Designing Soil-Nailed Walls Using the Amherst Wall Considering Problematic Issues during Execution and Service Life

Contact Info

Product

Resources

About