摘要
总结和分析多个“一带一路”涉外工程,在波高大、周期长的恶劣水文条件下,且无法准确预报波浪资料的情况下,抛石斜坡式防波堤在施工过程中所遭遇破坏经历,以及破坏后采取修复措施的成功经验。针对印度尼西亚新建的某火电项目斜坡式抛石防波堤工程施工期前,开展了施工期防波堤断面物理模型试验验证,结果表明:10~500 kg堤心石断面,波浪作用1 h后,断面产生破坏即块石高程由设计的3.5 m冲至0.8 m,继续作用至24 h后,高程冲至约-2.5 m;完成800~1600 kg垫层石后的断面,波浪作用0.5 h后,水面线以上800~1600 kg块石被冲至港内,堤心石暴露破坏,最终破坏形式类似堤心石断面。根据试验结果,结合现场施工能力和条件,提出了相应的改善措施,结果可为设计施工提供基础数据,也为项目上减少不必要的经济损失提供技术参考。同时也再次验证物理模型试验在设计、施工和优化方面的必要性。
In this paper,a number of'Belt and Road'foreign related projects were summarized and analyzed.Under the severe hydrological conditions with large wave heights and long periods,and the wave data couldn′t be accurately predicted,the damage experience of the riprap slope breakwater during construction and the damage successful experience after be taken remedial measures.Therefore,before the construction period of a sloped riprap breakwater project for a newly built thermal power project in Indonesia,a physical model test verification of the breakwater section during the construction period was carried out.The results showed that:10~500 kg section of the rubble rock,after 1 hour of wave action,The section is damaged,that is,the section elevation is rushed from the designed 3.5 m to 0.8 m.After 24 hours,the section elevation is rushed to about-2.5 m.After completing the section of 800~1600 kg cushion rock,the wave continued to act for 0.5 hours,and 800~1600 kg of rock above the still water level is washed into the port,and the rubble rock is exposed and damaged,and the final damage is similar to the rubble rock section.According to the test results and the construction site′s construction capacity and conditions,corresponding improvement measures are proposed.The results can provide basic data for design and construction,and provide a technical reference for reducing unnecessary economic losses on the project.At the same time,the necessity of design,construction and optimization of the physical model test is verified again.
作者
高梅
戈龙仔
彭程
GAO Mei;GE Long-zai;PENG Cheng(Tianjin Port Petrochemical Terminal Co.Ltd., Tianjin 300452, China;Tianjin Research Institute for Water Transport Engineering, National Engineering Laboratory for Port Hydraulic Construction Technology, Key Laboratory of Engineering Sediment, Ministry of Transport, Tianjin 300456, China)
出处
《水道港口》
2020年第3期291-295,共5页
Journal of Waterway and Harbor
基金
国家重点研发计划专项资助(2016YFC0802204,2018YFC0809604)
天津市应用基础与前沿技术研究计划(17JCYBJC21900)
中央级公益性科研院所基本科研业务费专项(TKS190201,TKS190503)。
关键词
恶劣水文条件
施工期
抛石斜坡堤
稳定性
优化措施
harsh hydrological conditions
construction period
riprap slope breakwater
stability
optimization measures
