Designing the Alluvial Riverbeds in Curved Paths

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

Macura, Viliam^1 ; Škrinár, Andrej^1 ; Štefunková, Zuzana^1 ; Muchová, Zlatica^2 ; Majoroová, Martina^1

Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Radlinského 11, Bratislava

810 05, Slovakia^1

Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra, Hospodárska 7, Nitra

949 01, Slovakia^2

关键词: Design practice;    Mountain streams;    Natural sand;    Particle shape;    Regulated river;    River channels;    River restoration;    Settling velocity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/3/032063/pdf
DOI  :  10.1088/1757-899X/245/3/032063

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The paper presents the method of determining the shape of the riverbed in curves of the watercourse, which is based on the method of Ikeda (1975) developed for a slightly curved path in sandy riverbed. Regulated rivers have essentially slightly and smoothly curved paths; therefore, this methodology provides the appropriate basis for river restoration. Based on the research in the experimental reach of the Holeka Brook and several alluvial mountain streams the methodology was adjusted. The method also takes into account other important characteristics of bottom material - the shape and orientation of the particles, settling velocity and drag coefficients. Thus, the method is mainly meant for the natural sand-gravel material, which is heterogeneous and the particle shape of the bottom material is very different from spherical. The calculation of the river channel in the curved path provides the basis for the design of optimal habitat, but also for the design of foundations of armouring of the bankside of the channel. The input data is adapted to the conditions of design practice.