4000万t/a炼化一体化项目管道登陆栈桥建设方案对比  

Comparison of landing trestle construction schemes of pipelines of 40 million t/a refinery integration project

作　　者：蒋腊梅 冯浩 熊峰 徐春 JIANG La-mei;FENG Hao;XIONG Feng;XU Chun(CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China;Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032 [2]浙江海洋大学,浙江舟山316022

出　　处：《水运工程》2021年第5期102-107,共6页Port & Waterway Engineering

摘　　要：为研究不同建设方案对于管道登陆栈桥的影响,结合4000万t/a炼化一体化项目的工程案例,对比上部结构采用预应力混凝土箱梁结构与大跨钢管系杆拱桥+预制小箱梁结构两种方案,从经济性、工程量以及结构耐久性和后期维护等多方面综合考虑,提出推荐方案及施工技术要点。结果表明:通常采用的预应力混凝土箱梁结构施工方便、桩基数量多、安全性较高,且此结构自防腐效果好,后期维护量较少。综合考虑,当产品管道需要登陆栈桥时,对于栈桥方案上部结构设计宜优先使用预应力混凝土箱梁结构。对预应力混凝土箱梁结构进行设计时,应结合实际工程,合理控制预应力张拉时间,准确分析结构的受力特点,采取适宜的预应力技术能够保证施工作业与实际环境相匹配。To study the influence of different construction schemes on the landing trestle of the pipeline,we combine with the actual engineering case of 40 million t/a refinery integration project,compare the two schemes of the upper structure including the pre-stressed concrete box girder structure and the large-span steel pipe tie-bar arch bridge+prefabricated small box girder structure,carry out the comprehensive consideration from the aspects of economy,the quantity of work,the structural durability,and the late maintenance,and propose the recommended scheme and key points of construction technology.The results show that generally it is convenient to use the pre-stressed concrete box girder structure for construction,and the number of pile foundations is more and safer.Moreover,this structure has a good self-corrosion protection effect and less maintenance in the later period.Considering comprehensively,when the product pipeline needs to land on the trestle,the pre-stressed concrete box girder structure should be preferred for the upper structure design of the trestle scheme.When designing the structure of the pre-stressed concrete box girder,it is necessary to reasonably control the pre-stress tension time,accurately analyze the stress characteristics of the structure and adopt appropriate pre-stress technology to ensure the suitability of construction work and the actual environment.

关 键 词：栈桥建设 预应力混凝土箱梁 大跨钢管系杆拱桥 方案对比 

分 类 号：U653.91[交通运输工程—港口、海岸及近海工程] U658.5[交通运输工程—船舶与海洋工程]