Spatio-Temporal Dynamic Architecture of Living Brush Mattress: Root System and Soil Shear Strength in Riverbanks

Zhang, Dong; Cheng, Jinhua; Liu, Ying; Zhang, Hong-Jiang; Ma, Lei; Mei, Xuemei; YiHui, Sun

doi:10.3390/f9080493

Cited by 14 publications

(21 citation statements)

References 46 publications

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“…The lateral displacement of the sheet pile on the top reduced to 120 mm. With specialized root distribution models like the [8] and with extensive site experimental data like [13], it has become possible to incorporate the positive effects of vegetation in stream bank retaining structures. The base model presented in this article is based on relatively easy to obtain physical parameters.…”

Section: Resultsmentioning

confidence: 99%

“…There is a relative scarcity of studies focusing on growth of roots in riparian zone with time, when compared to forest or hill slope ecosystems. However the experimental study conducted by [13] could form an excellent base for the implementation of the sheet pile vegetation model developed in this study. [13] reported the spatio-temporal variation of root morphology of Salix alba 'L.Tristis' at a river bank in Liuli river in the Huairou district, China.…”

Section: Model Implementation-illustration Case Studymentioning

confidence: 99%

“…However the experimental study conducted by [13] could form an excellent base for the implementation of the sheet pile vegetation model developed in this study. [13] reported the spatio-temporal variation of root morphology of Salix alba 'L.Tristis' at a river bank in Liuli river in the Huairou district, China. The root biomass was measured after 1, 5 and 7 years after planting the saplings.…”

Section: Model Implementation-illustration Case Studymentioning

confidence: 99%

“…α =0.3, L=0.5, h1=0.8, λ=0.0667, η=0.033. For the growth rates refer to [13] growth with time which enables for calibration and validation of the root distribution model and the time dependent consequences for the design of the sheet pile. Also, the soil conditions suit the use of the root distribution model adopted.…”

Section: Model Implementation-illustration Case Studymentioning

confidence: 99%

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Timber sheet pile-vegetation model for stream bank retaining structure

2019

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Timber sheet piles are widely used to protect canal and stream banks. Quite often, riparian vegetation also grows along these retaining structures. Roots of riparian vegetation mechanically reinforce the soil with their root systems. A timber sheetpile- vegetation model is developed taking into account the mechanical reinforcement of the vegetation roots. The model uses easy to obtain physical parameters, which makes it suitable to have a preliminary estimate of how the forces on the bio engineered structure would evolve.

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Section: Resultsmentioning

confidence: 99%

Section: Model Implementation-illustration Case Studymentioning

confidence: 99%

Section: Model Implementation-illustration Case Studymentioning

confidence: 99%

Section: Model Implementation-illustration Case Studymentioning

confidence: 99%

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Timber sheet pile-vegetation model for stream bank retaining structure

2019

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“…The increase in service life is demonstrated through a case study. The experimental study provided by Zhang et al (2018) is used to determine the mechanical reinforcement provided by the roots, due to the quality of the input data. The damage accumulation model used for the timber components is based on the work by Caulfield (1985), Van der Put (1986, 1989, Foschi and Yao (1986), and Van de Kuilen (1999aKuilen ( , 2007.…”

Section: Introductionmentioning

confidence: 99%

Biodynamic timber sheet pile walls: vegetation retaining structure

2020

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Timber sheet pile walls are widely used for the protection of stream banks in different parts of the world. However, there is a tendency to create more sustainable types of stream banks not only because exploitable wood is more difficult to obtain, but also because of disturbance to the natural habitat of plants and animals due to hard embankments. In the Netherlands alone, about 2500 km of engineered timber sheet pile wall embankments exist, primarily made with tropical hardwood, besides an even much larger amount of ‘non-engineered’ small-size timber-based embankments. As an alternative, the authors propose to use a mixed timber sheet pile-vegetation system, where locally available timber can be applied in combination with natural vegetation. Unlike the usual bioengineering scheme, vegetation is not seen as an element, which could replace the timber sheet piles. Instead, a new perspective is tested, where the vegetation is included as a ‘structural’ element which can even counteract the consequences of time-dependent biological degradation of the timber sheet pile. By doing so, both long-term durability as well as reliability of the stream bank is improved. A comprehensive design strategy was developed based on well-established sub-models from the literature on plant growth, root reinforcement as well as timber damage accumulation. The timber sheet pile wall-vegetation system is illustrated in an example case study. Preliminary analysis including only the mechanical reinforcement of vegetation shows that there is a decrease in moment and shear acting on the timber sheet pile with growth of the vegetation. Consequently, the damage accumulation due to load duration effects on the timber decreases and the service life of the system increases. Thus, using vegetation in combination with highly degradable timber could possibly negate the need for using hardwood timber, or more generally, save resources that are currently used for these structures.

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