装配式空心板的横向预应力加固机理
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摘要
为了研究装配式空心板在施加横向预应力后结构横向整体受力情况,基于铰接板法和刚接板法相关理论,以某装配式空心板桥加固工程为研究对象,开展了加固桥梁铰缝处传力机理的研究。结果表明:装配式空心板在施加横向预应力后,其横向联系介于铰接和刚接之间。通过对实测数据进行定量分析,构建典型方程,计算出不同比例系数对应的各板影响线值,并采用相对误差最小原则,确定结构横向受力情况,研究成果可为该类桥梁的加固分析提供参考。
In order to study the lateral overall force of the assembled hollow slab after applying lateral prestress,the theory of hinged plate method and rigid plate method was adopted,force transfer mechanism at the articulated joints of the reinforced bridge was studied taking the reinforcement project of an assembled hollow slab bridge as the research object.The results show that after applying lateral prestressing force,the transverse connection of assembled hollow slab is between hinged and rigid joints.Through the quantitative analysis of the measured data,the typical equation is constructed,and the influence line values of each plate corresponding to different proportional coefficients are calculated.The principle of minimum relative error is adopted to determine the lateral force of the structure.The research results can provide reference for the reinforcement analysis of this kind of bridge.
In order to study the lateral overall force of the assembled hollow slab after applying lateral prestress,the theory of hinged plate method and rigid plate method was adopted,force transfer mechanism at the articulated joints of the reinforced bridge was studied taking the reinforcement project of an assembled hollow slab bridge as the research object.The results show that after applying lateral prestressing force,the transverse connection of assembled hollow slab is between hinged and rigid joints.Through the quantitative analysis of the measured data,the typical equation is constructed,and the influence line values of each plate corresponding to different proportional coefficients are calculated.The principle of minimum relative error is adopted to determine the lateral force of the structure.The research results can provide reference for the reinforcement analysis of this kind of bridge.
引文
[1]项贻强,邢骋,邵林海.铰接预应力混凝土空心板梁桥的空间受力行为及加固分析[J].东南大学学报(自然科学版),2012,42(7):734-738.
[2]陈淮,张云娜.施加横向预应力加固装配式空心板桥研究[J].公路交通科技,2008,25(10):58-62.
[3]ROSCHKE P N,INOUE M.Effects of Banded Post-tensioning in Prestressed Concrete Flat Slab[J].Journal of Structural Engineering,1991,117(2):563-583.
[4]张云娜.施加横向体外预应力加固装配式空心板桥的研究[D].郑州:郑州大学,2007.
[5]王砚桐.高等级公路中“单板受力”现象及原因分析[J].公路交通技术,2004(4):29-32.
[6]李友好,赵豫生.某病害桥横向体外预应力加固实践[J].重庆交通学院学报,2005,24(2):18-21.
[7]赵卓,蒋晓东,霍达.基于破坏荷载试验的预应力混凝土空心板单板受力分析[J].北京工业大学学报,2007,33(5):498-501,523.
[8]俞博,叶见曙,张剑,等.装配式混凝土铰接板桥铰缝剪力计算[J].深圳大学学报(理工版),2011,28(1):60-64.
[9]种永峰.空心板梁铰接缝模型试验研究[D].西安:长安大学,2008.
[10]吕长荣,周世军.装配式简支空心板梁纵向裂缝分析[J].交通标准化,2007(4):167-171.
[11]黄民水,朱宏平.空心板梁桥"单板受力"病害机理及其加固处治研究[J].华中科技大学学报(自然科学版),2008,36(2):118-121.
[12]赵华庆,史卫滨.空心板梁底板纵向裂缝成因分析及加固对策[J].铁道建筑,2011(3):4-5.
[13]魏明光,李国平.预制装配式空心板梁桥横向连接方式的比较[J].结构工程师,2012,28(5):25-30.
[14]冷艳玲,张劲泉,程寿山,等.装配式混凝土空心板梁桥单板受力问题的数值解析[J].公路交通科技,2013,30(5):63-73.
[15]杨敏,靳欣华.混凝土空心板梁桥典型病害成因分析及防治策略[J].城市道桥与防洪,2008(8):112-115.
[16]刘明选.空心板梁桥铰缝病害分析和维修方法研究[J].四川理工学院学报(自然科学版),2014,27(4):65-68.
[2]陈淮,张云娜.施加横向预应力加固装配式空心板桥研究[J].公路交通科技,2008,25(10):58-62.
[3]ROSCHKE P N,INOUE M.Effects of Banded Post-tensioning in Prestressed Concrete Flat Slab[J].Journal of Structural Engineering,1991,117(2):563-583.
[4]张云娜.施加横向体外预应力加固装配式空心板桥的研究[D].郑州:郑州大学,2007.
[5]王砚桐.高等级公路中“单板受力”现象及原因分析[J].公路交通技术,2004(4):29-32.
[6]李友好,赵豫生.某病害桥横向体外预应力加固实践[J].重庆交通学院学报,2005,24(2):18-21.
[7]赵卓,蒋晓东,霍达.基于破坏荷载试验的预应力混凝土空心板单板受力分析[J].北京工业大学学报,2007,33(5):498-501,523.
[8]俞博,叶见曙,张剑,等.装配式混凝土铰接板桥铰缝剪力计算[J].深圳大学学报(理工版),2011,28(1):60-64.
[9]种永峰.空心板梁铰接缝模型试验研究[D].西安:长安大学,2008.
[10]吕长荣,周世军.装配式简支空心板梁纵向裂缝分析[J].交通标准化,2007(4):167-171.
[11]黄民水,朱宏平.空心板梁桥"单板受力"病害机理及其加固处治研究[J].华中科技大学学报(自然科学版),2008,36(2):118-121.
[12]赵华庆,史卫滨.空心板梁底板纵向裂缝成因分析及加固对策[J].铁道建筑,2011(3):4-5.
[13]魏明光,李国平.预制装配式空心板梁桥横向连接方式的比较[J].结构工程师,2012,28(5):25-30.
[14]冷艳玲,张劲泉,程寿山,等.装配式混凝土空心板梁桥单板受力问题的数值解析[J].公路交通科技,2013,30(5):63-73.
[15]杨敏,靳欣华.混凝土空心板梁桥典型病害成因分析及防治策略[J].城市道桥与防洪,2008(8):112-115.
[16]刘明选.空心板梁桥铰缝病害分析和维修方法研究[J].四川理工学院学报(自然科学版),2014,27(4):65-68.