基于精细模型的波形钢腹板斜拉桥收缩徐变效应分析

doi:10.3969/j.issn.1674-0696.2024.11.04

摘要/Abstract

摘要： 为了解决按龄期调整有效模量法计算混凝土徐变时存在卸载后徐变即恢复的缺陷，以及通用计算程序ANSYS等软件没有专用混凝土徐变分析模型的问题，提出了基于按龄期调整的修正模量法以确定蠕变系数的混凝土徐变计算方法，推导了混凝土徐变系数的求解公式，编制了计算程序；结合已有理论与试验数据验证了计算方法的有效性；计算了波形钢腹板箱梁无背索斜拉桥收缩徐变效应。结果表明：在收缩徐变效应影响下，结构内力重分配明显，多数结构响应在成桥1年内充分发展至10年增量值的60%以上；徐变作用下有索跨跨中底板、主梁根部截面底板、主塔有索侧根部位置应力逐步增加，应重点关注其受力安全问题。

关键词: 桥梁工程；收缩徐变；按龄期调整有效模量法；无背索斜拉桥；蠕变本构系数；波形钢腹板梁

Abstract: In order to overcome the defect of creep recovery after unloading in the calculation of concrete creep by using the age-adjusted effective modulus method, and solve the problem of the general calculation program such as ANSYS without a dedicated concrete creep analysis model, the calculation method of concrete creep based on the principle of effective modulus method adjusted by age to determine the creep coefficient was proposed. The formula for calculating the creep coefficient of concrete was derived, and a calculation program was developed. The effectiveness of the proposed calculation method was verified by combining existing theory and experimental data. The shrinkage and creep effects of a corrugated steel web box girder cable-stayed bridge without back cables were calculated. The results show that under the influence of shrinkage and creep effect, the internal force redistribution of the structure is obvious, and most structural responses have been fully developed to more than 60% of the 10-year incremental value within one year of completion of the bridge. Under the action of creep, the stresses gradually increases at the mid span bottom plate of the cable span, the bottom plate of the main beam root section, and the root position of the cable side of the main tower. The force safety issues at these locations should be focused on.

Key words: bridge engineering; shrinkage and creep; method of age-adjusted effective modulus; cable-stayed bridge without back cable; creep constitutive coefficient; corrugated steel webs girder

中图分类号:

U443.3

许世展,马浩凯,马迎港. 基于精细模型的波形钢腹板斜拉桥收缩徐变效应分析[J]. 重庆交通大学学报（自然科学版）, 2024, 43(11): 27-36.

XU Shizhan, MA Haokai, MA Yinggang. Shrinkage and Creep Effect of Corrugated Steel Webs Cable-Stayed Bridge Based on Fine Model[J]. Journal of Chongqing Jiaotong University(Natural Science), 2024, 43(11): 27-36.

参考文献

［1］马牛静, 王荣辉, 李平杰. 预应力混凝土斜拉桥施工过程中的收缩徐变效应［J］. 铁道学报, 2013, 35(4): 90-95.
MA Niujing, WANG Ronghui, LI Pingjie. Shrinkage and creep of prestressed concrete cable-stayed bridge in construction ［J］. Journal of the China Railway Society, 2013, 35(4): 90-95.
［2］韩春秀, 周东华, 姚凯程, 等. 一种计算组合梁徐变和收缩效应的新方法［J］. 华中科技大学学报(自然科学版), 2017, 45(8): 99-104.
HAN Chunxiu, ZHOU Donghua, YAO Kaicheng, et al. A new algorithm for creep and shrinkage effects of composite beams ［J］. Journal of Huazhong University of Science and Technology (Natural Science Edition), 2017, 45(8): 99-104.
［3］何岸, 蔡健, 陈庆军, 等. 钢套管再生混凝土加固柱轴压试验［J］. 西南交通大学学报, 2018, 53(6): 1187-1194.
HE An, CAI Jian, CHEN Qingjun, et al. Axial compressive experiment on steel-jacket retrofitted column with recycled aggregate concrete ［J］. Journal of Southwest Jiaotong University, 2018, 53(6): 1187-1194.
［4］ BAZANT Z P. Prediction of concrete creep effects using age-adjusted effective modulus method ［J］. ACI Journal Proceedings, 1972, 69(4): 212-219.
［5］ TROST H. Auswirkungen des superposition sprinzips auf kriech-und relaxations probleme bei beton und spannbeton ［J］. Beton Und Stahlbetonbau, 1967, 62(10): 230-238.
TROST H. Effects of the superposition principle on creep and relaxation problems in concrete and prestressed concrete ［J］. Concrete and Reinforced Concrete Construction, 1967, 62(10): 230-238.
［6］李立峰, 王芳, 刘志才. 体外预应力波形钢腹板组合箱梁徐变性能研究［J］. 湖南大学学报(自然科学版), 2008, 35(5): 1-5.
LI Lifeng, WANG Fang, LIU Zhicai. Study on the creep behavior of externally prestressed composite beam with corrugated steel webs ［J］. Journal of Hunan University (Natural Sciences), 2008, 35(5): 1-5.
［7］袁卓亚, 李立峰, 刘清, 等. 波形钢腹板组合箱梁横向内力分析及试验研究［J］. 中国公路学报, 2015, 28(11): 73-81.
YUAN Zhuoya, LI Lifeng, LIU Qing, et al. Analysis and experimental study of transverse internal force in composite box-girder with corrugated steel webs ［J］. China Journal of Highway and Transport, 2015, 28(11): 73-81.
［8］王永宝, 贾毅, 廖平, 等. 混凝土收缩徐变预测模型对比分析［J］. 铁道建筑, 2017, 57(8): 146-150.
WANG Yongbao, JIA Yi, LIAO Ping, et al. Comparison and analysis of prediction model of concrete shrinkage and creep ［J］. Railway Engineering, 2017, 57(8): 146-150.
［9］韩伟威, 吕毅刚. 混凝土收缩徐变预测模型试验研究［J］. 中南大学学报(自然科学版), 2016, 47(10): 3515-3522.
HAN Weiwei, LYU Yigang. Experimental research on prediction model of concrete shrinkage and creep ［J］. Journal of Central South University (Science and Technology), 2016, 47(10): 3515-3522.
［10］陈晋, 丁晗, 邓岚青, 等. 欧美最新混凝土收缩徐变理论的数值对比及应用［J］. 建筑结构, 2019, 49(17): 90-97.
CHEN Jin, DING Han,DANE Lanqing, et al. Numerical comparison and application of latest European and American creep and shrinkage theories ［J］. Building Structure, 2019, 49(17): 90-97.
［11］ BAZANT Z P, BAWEJ A S. Creep and shrinkage prediction model for analysis and design of concrete structures-model B3 ［J］. Materials and Structures, 1995, 28(6): 357-365.
［12］刘沐宇, 李倩, 黄岳斌, 等. 港珠澳大桥钢-混组合连续梁桥超长时间收缩徐变效应［J］. 中国公路学报, 2016, 29(12): 60-69.
LIU Muyu, LI Qian, HUANG Yuebin, et al. Ultra-long-time performance of steel-concrete composite continuous beam in Hong Kong-Zhuhai-Macao bridge with creep and shrinkage of concrete slabs ［J］. China Journal of Highway and Transport, 2016, 29(12): 60-69.
［13］杨永清, 李世伟, 李晓斌, 等. 变温度环境下混凝土的三维收缩徐变效应［J］. 西南交通大学学报, 2019, 54(5): 931-936.
YANG Yongqing, LI Shiwei, LI Xiaobin, et al. 3D shrinkage and creep effects of concrete under varying temperature environment ［J］. Journal of Southwest Jiaotong University, 2019, 54(5): 931-936.
［14］肖汝诚. 桥梁结构分析及程序系统［M］. 北京: 人民交通出版社, 2002.
XIAO Rucheng. Bridge Structure Analysis and Program System ［M］. Beijing: China Communications Press, 2002.
［15］王庆贺, 董国明, 谷凡, 等. 非均匀收缩变形对两跨连续钢-混凝土组合板长期性能的影响研究［J］. 建筑结构学报, 2020, 41(增刊1): 179-187.
WANG Qinghe, DONG Guoming, GU Fan, et al. Influence of non-uniform shrinkage on long-term behavior of double-span composite steel-concrete slabs ［J］. Journal of Building Structures, 2020, 41(Sup 1): 179-187.
［16］高岳权, 黄浩良, 王佶, 等. 基于等效模量法与ANSYS计算混凝土徐变［J］. 武汉理工大学学报, 2010, 32(3): 13-15.
GAO Yuequan, HUANG Haoliang, WANG Ji, et al. Calculation of concrete creep based on the equivalent modulus and ANSYS ［J］. Journal of Wuhan University of Technology, 2010, 32(3): 13-15.
［17］胡守旺, 彭建新, 张建仁, 等. 钢管混凝土拱桥核心混凝土徐变效应可靠度分析［J］. 中国公路学报, 2017, 30(3): 183-190.
HU Shouwang, PENG Jianxin, ZHANG Jianren, et al. Reliability analysis of core concrete creep effect on concrete-filled steel tubular arch bridge ［J］. China Journal of Highway and Transport, 2017, 30(3): 183-190.
［18］王龙飞. 桥梁混凝土收缩徐变效应时变过程综合仿真［J］. 公路交通科技, 2021, 38(2): 54-61.
WANG Longfei. Comprehensive simulation on shrinkage and creep effects of concrete in bridges during time-varying process ［J］. Journal of Highway and Transportation Research and Development, 2021, 38(2): 54-61.
［19］樊健生, 聂建国, 王浩. 考虑收缩、徐变及开裂影响的组合梁长期受力性能研究(Ⅰ)——试验及计算［J］. 土木工程学报, 2009, 42(3): 8-15.
FAN Jiansheng, NIE Jianguo, WANG Hao. Long-term behavior of composite beams with shrinkage, creep and cracking (I): experiment and calculation ［J］. China Civil Engineering Journal, 2009, 42(3): 8-15.
［20］樊健生, 聂鑫, 李全旺. 考虑收缩、徐变及开裂影响的组合梁长期受力性能研究(Ⅱ)——理论分析［J］. 土木工程学报, 2009, 42(3): 16-22.
FAN Jiansheng, NIE Xin, LI Quanwang. Long-term behavior of composite beams with shrinkage, creep and cracking (Ⅱ): Theoretical analysis ［J］. China Civil Engineering Journal, 2009, 42(3): 16-22.

[1]	吴丽丽1，安丽佩1,2. 折线板型正交异性钢桥面板受力性能的参数分析[J]. 重庆交通大学学报（自然科学版）, 2020, 39(11): 59-65.
[2]	孙马，周建庭，徐略勤，高鹏，阳珊清. 基于加速锈蚀试验的RC梁抗弯性能劣化研究[J]. 重庆交通大学学报（自然科学版）, 2020, 39(08): 51-58.
[3]	马丽英，李茂其，曹源文,董琴琴. 沥青桥面压实均匀性实时检测方法研究[J]. 重庆交通大学学报（自然科学版）, 2020, 39(02): 69-74.
[4]	鲁邦泽1,2 ，邵旭东1,2 ，邱明红1,2 ，周林云1,2 ，张阳1,2. 密集隔板UHPC箱梁体外预应力束转向构造研究[J]. 重庆交通大学学报（自然科学版）, 2020, 39(01): 51-59.
[5]	李峰. 基于振动法的拉索抗弯刚度及拉力实用估算公式研究[J]. 重庆交通大学学报（自然科学版）, 2019, 38(06): 17-21.
[6]	樊见维1，张峰2，高磊2，王大伟2，高华睿2. 预应力夹片锚钢筋回缩量概率分布模型[J]. 重庆交通大学学报（自然科学版）, 2019, 38(03): 9-13.
[7]	洪华，金肃静，杨勇勇. 悬臂施工箱梁腹板开裂成因研究[J]. 重庆交通大学学报（自然科学版）, 2019, 38(02): 13-18.
[8]	钱骥1,2，杨金川1，李长春1，张俊波1. 基于导波模态转角的钢绞线张拉力计算方法研究[J]. 重庆交通大学学报（自然科学版）, 2018, 37(11): 1-7.
[9]	李嘉1,2，赵昭1，王万鹏1，陈卫1. 模拟自然条件下UHPC-TPO复合构件耐老化性能研究[J]. 重庆交通大学学报（自然科学版）, 2018, 37(07): 46-53.
[10]	渠昱1，2，曾勇1，2，顾安邦1，2，杜柏松1，2. XFEM及其在正交异性钢桥面板疲劳裂纹扩展中的应用[J]. 重庆交通大学学报（自然科学版）, 2018, 37(04): 21-27.
[11]	王玲，王韬，王荣霞. 大跨径连续钢桁梁桥悬臂拼装线形控制方法研究[J]. 重庆交通大学学报（自然科学版）, 2017, 36(11): 11-15.
[12]	刘大洋，何晓琴. 带HDPE外壳钢绞线斜拉索索力测试研究[J]. 重庆交通大学学报（自然科学版）, 2017, 36(9): 12-16.
[13]	李嘉1,2，李杰1,3，陈卫1，李树原1. 钢桥面?超薄UHPC?TPO组合铺装体系[J]. 重庆交通大学学报（自然科学版）, 2017, 36(4): 1-6.
[14]	邵旭东，张松涛,张良，欧阳泽卉. 钢-超薄UHPC层轻型组合桥面性能研究[J]. 重庆交通大学学报（自然科学版）, 2016, 35(1): 22-27.
[15]	章登精. 大跨度钢箱梁复合浇注式沥青钢桥面铺装设计[J]. 重庆交通大学学报（自然科学版）, 2015, 34(5): 5-13.