节段预制波形钢腹板组合箱梁桥节段存放及吊装方案的优化设计被引量：1

Optimal design of segment storage and hoisting of segmental prefabricated corrugated steel web composite box girder

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摘要为了优化节段预制波形钢腹板组合箱梁桥节段划分、存放及吊装方案,以南京长江五桥引桥——立新路跨线桥为研究背景,采用数值模拟方法对波形钢腹板组合箱梁桥节段进行合理划分长度,分析标准节段梁存放及吊装期的应力变化及变形特征,并提出合理的控制措施.结果表明:节段长度为240~400 cm时,对梁体抗弯承载力影响较小,波形钢腹板组合箱梁桥节段长度的合理划分取决于吊装及运输条件;节段梁存放层数不宜超过2层,如采用双层存放,需在波形钢腹板节段梁混凝土顶板与底板之间设置临时刚性支撑;节段梁吊装宜采用四吊点方案,即在靠近腹板处设置4个吊点,且起吊时在顶板与底板之间设置临时刚性支撑,以避免顶板变形过大,增加现场拼装控制的难度. To optimize the segmental division,storage and hoisting scheme of segmental prefabricated corrugated steel web composite box girder bridge,taking the approach bridge of Nanjing Yangtze River Fifth Bridge-Lixin Road Crossing Bridge as research background,the numerical simulation was used to verify the reasonable partition length of composite beams with corrugated steel webs.The stress and deformation characteristics of standard beams during storage and hoisting period were analyzed,and the reasonable control measures were proposed.The results show that when the segment length is from 240 cm to 400 cm,it has little influence on the flexural capacity of beam,and the reasonable segment length of composite beams with corrugated steel webs depends on hoisting and transportation conditions.The number of storage layers of section beams should not exceed 2 layers.If double layers are used for storage,the temporary rigid bracing should be set between the concrete top and bottom plates of section beams with corrugated steel webs.Four hoisting points should be adopted for section beam hoisting with four hoisting points set near the web,and the temporary rigid bracing should be set between the top and bottom plates during hoisting to avoid the excessive deformation of roof and the increasing difficulty of on-site assembly control.

作者邓文琴宋启港刘朵彭宗卿张建东 DENG Wenqin;SONG Qigang;LIU Duo;PENG Zongqing;ZHANG Jiandong(College of Civil Engineering,Nanjing Tech University,Nanjing,Jiangsu 211816,China;China Design Group Co.,Ltd.,Nanjing,Jiangsu 210014,China;JSTI GROUP,Nanjing,Jiangsu 211112,China)

机构地区南京工业大学土木工程学院华设设计集团股份有限公司苏交科集团股份有限公司

出处《江苏大学学报（自然科学版）》 CAS 北大核心 2025年第1期113-119,共7页 Journal of Jiangsu University：Natural Science Edition

基金国家自然科学基金资助项目(51908282,52378160) 江苏省青年基金资助项目(BK20190681) 江苏省高等学校自然科学研究面上项目(19KJB580002) 山东省交通运输厅科技计划项目(2020B47)。

关键词波形钢腹板节段预制节段长度存放阶段吊装阶段临时刚性支撑有限元模型 corrugated steel web segment prefabricated segment length storage stage hoisting stage temporary rigid bracing finite element model