發(fā)布時(shí)間：2019-06-12 09:34

【摘要】：通過波浪斷面物理模型試驗(yàn),對(duì)混凝土鉸鏈排護(hù)坡式海堤排體在不同水深、波高、波周期、波浪類型及壓載塊體間距等條件下的穩(wěn)定性展開研究,揭示了排體不同部位的失穩(wěn)特點(diǎn)。試驗(yàn)結(jié)果表明:當(dāng)水深一定時(shí),波高或波周期越大,排體穩(wěn)定性越差;不規(guī)則波作用對(duì)排體穩(wěn)定性的影響顯著大于規(guī)則波作用;排體失穩(wěn)主要發(fā)生在首尾邊緣部分,而內(nèi)部穩(wěn)定性較好,當(dāng)排體采用首尾邊緣壓載塊體厚度大、內(nèi)部壓載塊體厚度小的結(jié)構(gòu)形式時(shí),仍具有良好的穩(wěn)定效果;壓載塊體間距對(duì)排體穩(wěn)定性、抗沖、變形和保護(hù)岸灘能力及墊層碎石質(zhì)量的選取均具有一定影響,在實(shí)際工程中應(yīng)綜合考慮各因素合理確定。
[Abstract]:Through the physical model test of wave section, the stability of concrete hinged slope protection seawall under different water depth, wave height, wave period, wave type and ballast block spacing is studied, and the instability characteristics of different parts of row body are revealed. The experimental results show that when the water depth is certain, the larger the wave height or wave period is, the worse the stability of the row body is, and the influence of irregular wave action on the stability of the row body is significantly greater than that of the regular wave action. The instability of the row body mainly occurs at the edge of the head and tail, but the internal stability is better. When the thickness of the ballast block at the head and tail edge is large and the thickness of the internal ballast block is small, it still has a good stability effect. The distance between ballast blocks has certain influence on the stability of row body, impact resistance, deformation, beach protection capacity and the selection of cushion gravel quality, which should be reasonably determined by comprehensive consideration in practical engineering.
【作者單位】： 寧波中交水運(yùn)設(shè)計(jì)研究有限公司;河海大學(xué)港口海岸與近海工程學(xué)院;濱海縣水利局;
【基金】：國家自然科學(xué)基金重點(diǎn)項(xiàng)目(51339005) 江蘇省水利廳科技項(xiàng)目(2013-55)
【分類號(hào)】：U656.314
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本文編號(hào)：2497914