山区高墩T梁桥桥墩价值工程研究
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摘要
为实现山区高墩T梁桥桥墩的优化设计,引入价值工程理论,采用多元优化法及参数化建模手段对20~100m高度的多种桥墩进行承载能力分析与优化研究,得到了满足二类稳定要求的墩型合理截面尺寸,并进行相应的桥墩抗推刚度规律及经济性能规律分析。在此基础上,以桥墩抗推刚度标准差为性能指标,桥墩总造价为经济指标进行组合,实现厦蓉线贵州境内多座桥梁的桥墩价值评估。研究结果表明:对于分幅的山区高墩T梁桥,桥墩高度为20~40m范围采用双柱实心墩,桥墩高度为40~70m随高度变化采用单柱实心墩或单柱空心墩,桥墩高度为70~100m范围采用单柱空心墩时桥梁结构性能表现最优、经济性能最好,桥墩价值达到最大化。
For the design optimization of high piers of T-beam bridges in mountain areas,value engineering theory,multivariate optimization and parametric modeling method were adopted for the supporting capacity analysis and optimization study for 20 to 100 meters high piers,and pier dimension for secondary stability was got.Anti-push rigidity and economic performance of high piers were studied.Based on the analysis,the value assessment for the piers was proposed and used in design process of some high pier bridges with the combination of anti-push rigidity standard deviation and total cost of the pier in Xiarong Highway,Guizhou Province.The results show when the pier height is from 20 to 40meters,double column solid piers are better;when the pier height is from 40 to 70 meters,single column solid piers and single column hollow piers are better as the height increases;and when the pier height is from 70 to 100 meters,single column hollow piers are better.Under these choices,the bridge structure will be optimal with the best economic performance and maximum value of the pier.
For the design optimization of high piers of T-beam bridges in mountain areas,value engineering theory,multivariate optimization and parametric modeling method were adopted for the supporting capacity analysis and optimization study for 20 to 100 meters high piers,and pier dimension for secondary stability was got.Anti-push rigidity and economic performance of high piers were studied.Based on the analysis,the value assessment for the piers was proposed and used in design process of some high pier bridges with the combination of anti-push rigidity standard deviation and total cost of the pier in Xiarong Highway,Guizhou Province.The results show when the pier height is from 20 to 40meters,double column solid piers are better;when the pier height is from 40 to 70 meters,single column solid piers and single column hollow piers are better as the height increases;and when the pier height is from 70 to 100 meters,single column hollow piers are better.Under these choices,the bridge structure will be optimal with the best economic performance and maximum value of the pier.
引文
[1]王乃静.价值工程概论[M].北京:经济科学出版社,2006.WANG Nai-jing.Introduction to Value Engineering[M].Beijing:Economic Science Press,2006.
[2]马朝霞,陈思甜,龚尚龙.高桥墩墩顶水平位移的计算与分析[J].重庆交通大学学报:自然科学版,2007,26(6):50-54.MA Zhao-xia,CHEN Si-tian,GONG Shang-long.Calculation and Analysis of Lateral Displacement at the Top of Higher Bridge Pier[J].Journal of Chongqing Jiaotong University:Natural Science,2007,26(6):50-54.
[3]何畅,向中富.具有初始缺陷的高桥墩非线性稳定分析[J].重庆交通学院学报,2003,22(3):14-17.HE Chang,XIANG Zhong-Fu.Non-linear Stability Analysis of Tall Piers with Incipient Defect[J].Journal of Chongqing Jiaotong University,2003,22(3):14-17.
[4]李永乐,邸月龙,赵彤,等.大跨高墩城市轨道交通斜拉桥动力特性及抗风性能[J].建筑科学与工程学报,2010,27(4):19-24.LI Yong-le,DI Yue-long,ZHAO Tong,et al.Dynamic Characteristic and Wind Resistance Behavior of Highpier Long-span Cable-stayed Bridge for Urban Rail Transit[J].Journal of Architecture and Civil Engineering,2010,27(4):19-24.
[5]JTG D62—2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].JTG D62—2004,Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts[S].
[6]宋晓东,李建中.山区桥梁的抗震概念设计[J].地震工程与工程振动,2004,24(1):92-96.SONG Xiao-dong,LI Jian-zhong.Seismic Conceptual Design for Mountain Bridges[J].Earthquake Engineering and Engineering Vibration,2004,24(1):92-96.
[7]李睿,宁晓骏,叶燎原,等.高墩梁桥的地震反应分析[J].昆明理工大学学报,2001,26(5):86-89.LI Rui,NING Xiao-jun,YE Liao-yuan,et al.Earthquake Response Analysis of Girder Bridge with High Pier[J].Journal of Kunming University of Science and Technology,2001,26(5):86-89.
[8]程翔云.高桥墩设计计算中的两个问题[J].重庆交通学院学报,2000,19(2):6-10.CHENG Xiang-yun.Two Problems in Design and Calculation of Higher Bridge Piers[J].Journal of Chongqing Jiaotong Institute,2000,19(2):6-10.
[9]JTG TB06-02—2007,公路工程预算定额[S].JTG TB06-02—2007,Budgetary Norm of Highway Project[S].
[2]马朝霞,陈思甜,龚尚龙.高桥墩墩顶水平位移的计算与分析[J].重庆交通大学学报:自然科学版,2007,26(6):50-54.MA Zhao-xia,CHEN Si-tian,GONG Shang-long.Calculation and Analysis of Lateral Displacement at the Top of Higher Bridge Pier[J].Journal of Chongqing Jiaotong University:Natural Science,2007,26(6):50-54.
[3]何畅,向中富.具有初始缺陷的高桥墩非线性稳定分析[J].重庆交通学院学报,2003,22(3):14-17.HE Chang,XIANG Zhong-Fu.Non-linear Stability Analysis of Tall Piers with Incipient Defect[J].Journal of Chongqing Jiaotong University,2003,22(3):14-17.
[4]李永乐,邸月龙,赵彤,等.大跨高墩城市轨道交通斜拉桥动力特性及抗风性能[J].建筑科学与工程学报,2010,27(4):19-24.LI Yong-le,DI Yue-long,ZHAO Tong,et al.Dynamic Characteristic and Wind Resistance Behavior of Highpier Long-span Cable-stayed Bridge for Urban Rail Transit[J].Journal of Architecture and Civil Engineering,2010,27(4):19-24.
[5]JTG D62—2004,公路钢筋混凝土及预应力混凝土桥涵设计规范[S].JTG D62—2004,Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts[S].
[6]宋晓东,李建中.山区桥梁的抗震概念设计[J].地震工程与工程振动,2004,24(1):92-96.SONG Xiao-dong,LI Jian-zhong.Seismic Conceptual Design for Mountain Bridges[J].Earthquake Engineering and Engineering Vibration,2004,24(1):92-96.
[7]李睿,宁晓骏,叶燎原,等.高墩梁桥的地震反应分析[J].昆明理工大学学报,2001,26(5):86-89.LI Rui,NING Xiao-jun,YE Liao-yuan,et al.Earthquake Response Analysis of Girder Bridge with High Pier[J].Journal of Kunming University of Science and Technology,2001,26(5):86-89.
[8]程翔云.高桥墩设计计算中的两个问题[J].重庆交通学院学报,2000,19(2):6-10.CHENG Xiang-yun.Two Problems in Design and Calculation of Higher Bridge Piers[J].Journal of Chongqing Jiaotong Institute,2000,19(2):6-10.
[9]JTG TB06-02—2007,公路工程预算定额[S].JTG TB06-02—2007,Budgetary Norm of Highway Project[S].
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