Physical model investigation of mid-scale mangrove effects on flow hydrodynamics and pressures and loads in the built environment
Physical model investigation of mid-scale mangrove effects on flow hydrodynamics and pressures and loads in the built environment
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中等规模红树林对建筑环境中水流动力学、压力和载荷影响的物理模型研究
DOI：
10.1016/j.coastaleng.2020.103791
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发表时间：
2020
影响因子：
4.4
通讯作者：
Lynett, Pat
中科院分区：
文献类型：
--
作者：
Tomiczek, Tori;Wargula, Anna;Lomónaco, Pedro;Goodwin, Sabella;Cox, Dan;Kennedy, Andrew;Lynett, Pat
大型（公里级）红树林可在海啸和热带气旋等极端沿海洪灾期间保护海岸线和近海岸结构。然而，对于具有适度跨岸厚度（~10-50米）的红树林对水流动力学的影响以及由此产生的内陆压力和对近岸结构的作用力，人们知之甚少。我们构建了一个1：16的几何比例的物理模型aRhizophora mangle（红红树林）边缘适度的跨岸厚度测量的影响，一个红树林的跨岸厚度波衰减和随后的负载减少近海岸结构，理想化在实验过程中与立方体阵列。三种配置，一个基线与零红树林和两个与红树林跨海岸厚度对应的原型规模的森林宽度为8.2米和19.0米，被认为是在一个阵列的理想化板级住宅楼的前面。考虑了具有不同入射参数（波振幅、波代表时间尺度、水位/红树林出现和背景流的存在）的瞬态波条件。水表面海拔，水的速度，跨岸力，并对建筑阵列附近和压力测量表明，红树林影响内陆流的水动力和力量。红树林的存在与水位升高和红树林与内陆结构之间的峰值流速降低有关。增加红树林的跨岸厚度减少了11%-65%的跨岸力的结构相比，没有红树林的基线情况。力减少的红树林配置随入射波的代表性时间尺度;波与较长的代表性时间尺度需要更大的跨岸厚度，以提供类似的力减少观察到的较短的波。需要对更广泛的红树林跨岸厚度、树干密度和波浪条件进行进一步调查，以告知弹性海岸设计的自然和基于自然的特征的工程性能。
Large (km-scale) mangrove forests can provide protection to shorelines and near-coast structures during extreme coastal flood events, including tsunamis and tropical cyclones. However, little is known about the effects of mangroves with a modest cross-shore thickness (~10–50 m), on flow hydrodynamics and resulting inland pressures and forces on near-coast structures. We constructed a 1:16 geometric-scale physical model of aRhizophora mangle(red mangrove) fringe with modest cross-shore thickness to measure the effects of a mangrove forest's cross-shore thickness on wave attenuation and subsequent load reduction on near-coast structures, idealized during experiments with an array of cubes. Three configurations, one baseline with zero mangroves and two with mangrove cross-shore thicknesses corresponding to prototype-scale forest widths of 8.2 m and 19.0 m, were considered in front of an array of idealized slab-on-grade residential buildings. Transient wave conditions with varying incident parameters (wave amplitude, wave representative time scale, water level/mangrove emergence, and presence of a background current) were considered. Water surface elevations, water velocities, cross-shore forces, and pressures measured near and against the building array indicate that mangroves affected inland flow hydrodynamics and forces. The presence of mangroves was associated with elevated water levels and reduced peak velocities between the mangroves and inland structures. Increasing the mangrove cross-shore thickness reduced the cross-shore force on a structure by 11%–65% compared to the baseline case without mangroves. The force reduction by the mangrove configurations varied with incident wave representative time scale; waves with longer representative time scales required larger cross-shore thicknesses to provide similar force reductions to those observed for shorter waves. Further investigation into a wider range of mangrove cross-shore thicknesses, trunk densities, and wave conditions is needed to inform engineering performance of natural and nature-based features for resilient coastal design.
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红树林的生物系统：东印度尼西亚红树林考察报告，1986
DOI：
--
发表时间：
1988
期刊：
影响因子：
--
作者：
荻野 和彦;千原 光雄
通讯作者：
千原 光雄
DOI：
10.1016/j.apcbee.2013.05.006
发表时间：
2013
期刊：
APCBEE Procedia
影响因子：
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作者：
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通讯作者：
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公路桥梁上部结构波浪力的大型实验室测量
DOI：
--
发表时间：
2009
期刊：
影响因子：
--
作者：
Christopher Bradner;T. Schumacher;D. Cox;C. Higgins
通讯作者：
C. Higgins
影响因子：
2.8
作者：
Xiaofeng Zhang;V. Chua;H. Cheong
通讯作者：
Xiaofeng Zhang;V. Chua;H. Cheong
佛罗里达州最北部森林的红树林结构、凋落物和大型藻类生产力
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
C. Dawes
通讯作者：
C. Dawes