泥石流接近形状对试验中开放式萨博大坝冲击负荷的影响

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-04-08 DOI:10.1177/20414196241245124

T. Horiguchi, Yuta Miyahara, Yoshiharu Komatsu

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引用次数: 0

摘要

最近，日本因暴雨和台风引发的山体滑坡越来越严重。这种高强度的降雨灾害会导致钢管开敞式 Sabo 大坝出现一些结构性故障。因此，目前正在考虑静态设计荷载和冲击荷载。为了防止大坝结构性溃坝，有必要对超过现有设计荷载的严重荷载采用新的设计理念。然而，泥石流冲击荷载对钢管开敞式 Sabo 大坝的影响尚不明确，无法确定设计荷载。本研究通过实验，在比较楔形接近形状和前方巨石集中形状的基础上，确定了垂直荷载分布形状及其时间历史。前方巨石集中形状泥石流的荷载和力矩作用大于楔形接近形状。通过对冲击荷载垂直细节测量的观察，可以清楚地了解造成这种差异的机理。

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Influence of approach shape of debris flow on impact load to open Sabo dam in experiment

Recently, the magnitude of landslide caused by torrential rain and typhoons is increasing in Japan. This high intensity rainfall disaster induces some structural failure of steel pipe open Sabo dams. Thus, current static design loads and impact loads are being considered. To prevent some structural failure of the dam, a new design concept is necessary at the severe load that is exceeding the present design load. However, the influence of debris flow impact load on steel pipe open Sabo dam is not clear to make a design load. The study experimentally approaches a vertical load distribution shape and its time history based on a comparison with a wedge approach shape and a front boulder concentrated shape. The load and moment action of a front boulder concentrated shape debris flow is greater than that of a wedge approach shape. Mechanism making the difference is made clear by observation of vertical detail measurement of impact load.

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.