升船机塔柱钢筋混凝土横梁裂缝开展的非线性分析

doi:10.3969/j.issn.1001-5485.2013.12.020

院报 ›› 2013, Vol. 30 ›› Issue (12): 107-111.DOI: 10.3969/j.issn.1001-5485.2013.12.020

升船机塔柱钢筋混凝土横梁裂缝开展的非线性分析

谢小玲^a，b，陈琴^a，b，苏海东^a，b，龚亚琦^a，b

a.材料与结构研究所；b.水利部水工程安全与病害防治工程技术研究中心,武汉430010

收稿日期:2013-05-24 修回日期:2013-12-10 出版日期:2013-12-10 发布日期:2013-12-10
作者简介:谢小玲(1959-),女,广东潮汕人,高级工程师,主要从事水工结构的研究工作,(电话)027-82829754(电子信箱)xiexiaoling01@163.com。

Nonlinear Analysis of Crack Development in Reinforced ConcreteCrossbeam on Ship Lift Tower

XIE Xiao-ling^1,2,CHEN Qin^1,2,SU Hai-dong^1,2,GONG Ya-qi^1,2

1.Material and Engineering Structure Department,Yangtze River Scientific Research Institute,Wuhan 430010,China;
2.Research Center on Water Engineering Safety and Disaster Prevention of the Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China

Received:2013-05-24 Revised:2013-12-10 Online:2013-12-10 Published:2013-12-10

摘要/Abstract

摘要： 某升船机塔柱的顶部横向联系梁的梁系结构复杂,跨度大,所受荷载大,其横梁的主拉应力远超过混凝土的抗拉强度标准值,不可避免地会出现开裂现象。针对该塔柱顶部横梁的宽槽施工方案,采用钢筋混凝土开裂的材料非线性有限元方法以及子模型技术,分析横梁裂缝的分布、发展、变化规律,复核最不利工况下的裂缝宽度是否满足设计要求。计算中按照横梁一端先简支后固支的施工顺序,模拟宽槽回填施工过程,考虑宽槽回填前横梁与牛腿之间的接触滑移。根据分析结果提出了钢筋布置优化措施,以及施工缝布置改进措施,研究成果可供类似工程参考。

关键词: 升船机塔柱, 横梁, 钢筋混凝土, 开裂非线性, 有限元分析

Abstract: The crossbeams on top of a ship lift tower are long span structures under complex loads,and the principal tensile stress far exceeds the standard value of concrete tensile strength. Cracks inevitably develop in the beams. According to the wide joint construction scheme,nonlinear finite element method and sub-model technique are adopted to analyze the crack distribution and development and to calculate the width of crack under the worst condition. The wide joint construction process is simulated in the sequence of simple support before clamp support in one end of crossbeam. Sliding contact between crossbeams and brackets before wide joint backfilling is also considered in the model. Optimization measures are put forward such as the layout of steel bars and arrangement of construction joint. The research result could be a reference for similar projects.

Key words: ship lift tower, crossbeam, reinforced concrete, crack nonlinear analysis, finite element method

中图分类号:

TV332.12

谢小玲，陈琴，苏海东，龚亚琦. 升船机塔柱钢筋混凝土横梁裂缝开展的非线性分析[J]. 院报, 2013, 30(12): 107-111.

XIE Xiao-ling,CHEN Qin,SU Hai-dong,GONG Ya-qi. Nonlinear Analysis of Crack Development in Reinforced ConcreteCrossbeam on Ship Lift Tower[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2013, 30(12): 107-111.

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升船机塔柱钢筋混凝土横梁裂缝开展的非线性分析

Nonlinear Analysis of Crack Development in Reinforced ConcreteCrossbeam on Ship Lift Tower

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