摘要
目的针对通航水域桥墩防撞问题,对防撞钢套箱的设计与施工展开优化研究,提出大体积防撞钢套箱设计、拼装、整体下放、承台施工重难点工序的技术革新及重难点控制措施.方法通过研究通航水域桥墩防撞钢套箱施工全过程和相似工程的施工经验发现,防撞钢套箱的重负荷、拼装及下放精度有要求高、施工安全风险大等特点,笔者运用有限元软件对防撞钢套箱施工过程中的重难点进行有限元数值分析.结果有限元分析结果内支撑最大组合应力为53.3 MPa,内支撑最大轴力904 kN,拼装平台最大组合应力137 MPa,龙门吊承重梁最大应力为127.2 MPa,承重梁最大剪应力为39.6 MPa,承重梁最大变形为7.9 mm.结论防撞钢套箱施工各关键点均能满足套箱设计、拼装、整体下放的施工设计要求.
Aiming at the problem of anti-collision of bridge piers in navigable waters,the optimization research on the design and construction of anti-collision steel casing is carried out,and the technical innovation and control measures of the design,assembling,overall lowering and construction key and difficult procedures of large-volume anti-collision steel casing are put forward.Through research on navigable waters anti-collision pier steel box construction process and construction of similar engineering experience found anti-collision steel box set of heavy load,assembling and has high precision,great construction safety risk,so the authors using the finite element software to crash on steel box construction difficult point in the process of finite element numerical analysis. The analysis results support that the maximum combined stress is 53.3 MPa,within the maximum axial force 904 kN,assembling platform maximum combined stress is 137 MPa,gantry crane bearing beam bearing beam maximum stress is 127.2 MPa,maximum shear stress is 39.6 MPa,bearing beam maximum deformation is 7.9 mm. The results can meet the design requirements of the design,assembly,and putting down construction. According to the analysis and calculation results,the optimal construction plan is determined to ensure that the design and construction of the anti-collision steel case meet the construction requirements at all the key point.
作者
包龙生
陶天阳
张远宝
赵同宇
BAO Longsheng;TAO Tianyang;ZHANG Yuanbao;ZHAO Tongyu(School of Transportation Engineering,Shenyang Jianzhu University,Shenyang,China,110168;Liaoyang Municipal Facilities Management Office,Liaoyang,China,111000)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第6期1051-1058,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
“十三五”国家重点研发计划重点专项基金项目(2018YFC0809600,2018YFC0809606)
辽宁省重点研发计划指导计划基金项目(2018416028)
沈阳市建委城乡系统科研项目(201804)
关键词
防撞钢套箱
设计
拼装
整体下放
承台施工
anti-collision steel box
design
assemble
putting down
bearing platform construction
作者简介
包龙生(1971-),男,教授,博士,主要从事桥梁及道路工程等方面研究.
