海底取排水工程玻璃钢管受力特性试验研究  

Experimental study on the mechanical characteristics of FRP pipes in seabed water intake and drainage engineering

作　　者：戈龙仔[1] 刘针[1] 陈汉宝[1] GE Long-zai;LIU Zhen;CHEN Han-bao(Tianjin Research Institute for Water Transport Engineering,National Engineering Laboratory for Port Hydraulic Construction Technology,Key Laboratory of Engineering Sediment of Ministry of Communications,Tianjin 300456,China)

机构地区：[1]交通运输部天津水运工程科学研究所港口水工建筑技术国家工程实验室工程泥沙交通行业重点实验室

出　　处：《中国港湾建设》2020年第1期26-31,共6页China Harbour Engineering

基　　金：天津市科技服务业科技重大专项(16ZXFWGX00050);对发展中国家科技援助项目(KY201601001);中央级科研院所基本科研业务费专项(TKS160205,TKS160302)

摘　　要：利用物理模型试验手段,结合越南沿海二期2×660 MW燃煤电厂取排水工程,开展了新型玻璃钢管材质的管道受力特性试验研究。通过在试验室配置不同密度泥水混合物的组合方式,验证玻璃钢管处于自由静载状态疏浚物回填施工期和运营期密实固定状态下,受力、上浮过程等内容。试验揭示了不同密度回填土中管道上浮由初期缓慢阶段、中期快速阶段、最终震荡动态平衡阶段的规律,得到各上浮阶段的受力结果,并推导出利于实际工程应用的经验公式。结果可为海底管道的安全施工和运行稳定性提供重要的技术保障,以及为同类工程应用提供参考。By means of physical model test method, combined with the water extraction and drainage project of 2 ×660 MW coal-fired power plant in the second phase of the coastal area of Vietnam, the experimental study on the force characteristics of the new FRP pipe was carried out. By configuring different density mud-water mixtures in the laboratory, it was verified that the pipeline was in the free static load state during the dredging backfill construction period and the operation period under the state of dense fixation, and the force and floating process for the FRP pipe. The test result reveals the rule of initial slow,medium-term rapid and final dynamic balance of pipelines in different density backfill soils, and obtains the stress results of each floating stage, and deduces the empirical formulas for engineering application. The test result can provide important technical support for the safety construction and operation stability of submarine pipelines, as well as reference for similar engineering applications.

关 键 词：玻璃钢管 不同密度泥水混合物 上浮规律 波浪力 试验手段 

分 类 号：P756.2[天文地球—海洋科学] TU447[建筑科学—岩土工程]