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摘要: 应用《公路圬工桥涵设计规范》 (JTG D61—2005) 中的砌体柱和素混凝土柱承载力计算方法以及《公路钢筋混凝土及预应力混凝土桥涵设计规范》 (JTG D62—2004) 中的钢筋混凝土柱承载力计算方法, 分别对3座跨径为70、160、420m的钢筋混凝土拱桥进行了主拱承载力验算。考虑长细比、偏心率、配筋率等参数, 研究了钢筋混凝土柱的承载力变化规律, 分析了混凝土拱等效梁柱的参数范围以及砌体柱、素混凝土柱、钢筋混凝土柱的极限承载力。分析结果表明: 配筋率较小的钢筋混凝土拱等效成梁柱后, 按JTG D61—2005计算的承载力大于按JTG D62—2004计算的结果。对配筋率较小而长细比、偏心率较大的钢筋混凝土柱, 按钢筋混凝土柱计算的承载力反而小于砌体柱或素混凝土柱的承载力。可见, 2种规范中混凝土偏压柱承载力计算方法存在不合理之处, 需进一步改进。Abstract: By the application of the calculation methods of masonry columns and plain concrete columns in Codes for Design of Highway Masonry Bridges and Culverts (JTG D61—2005) and the calculation methods of reinforced concrete columns in Codefor Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts (JTG D62—2004), the loadcarrying capacities of 3 reinforced concrete arch bridges with the spans of 70, 160, 420 m were calculated respectively. The change rules of the bearing capacities of reinforced concrete columns were studied considering slenderness ratio, eccentricity, reinforcement ratio, and etc. The parameter ranges of the equivalent beam-column of concrete arches and the ultimate bearing capacities of masonry columns, plain concrete columns and reinforced concrete columns were analyzed. Analysis result shows that the bearing capacities calculated by JTG D61—2005 are greater than those calculated by JTG D62—2004 when reinforced concrete arches with low reinforcement ratio are treated as equivalent beam-column. For reinforced concrete columns with low reinforcement ratios and high slenderness ratios and eccentricities, the bearing capacities calculated by the formulas of reinforced concrete columns are smaller than those calculated by the formulas of masonry columns or plain concrete columns. Thus it can be seen that there areunreasonable factors in the calculation methods of eccentrically loaded concrete columns in two codes, which should be improved.
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图 4 柱算例1承载力与长细比关系
Figure 4. Relationship between bearing capacities and slenderness ratios of columns in example 1
图 5 柱算例2承载力与长细比关系
Figure 5. Relationship between bearing capacities and slenderness ratios of columns in example 2
图 6 柱算例2承载力与偏心率关系
Figure 6. Relationship between bearing capacities and eccentricities of columns in example 2
图 7 钢筋混凝土偏压柱试验数据统计
Figure 7. Statistics of test data of eccentrically loaded reinforced concrete columns
表 2 钢筋混凝土柱试验结果与规范计算结果对比
Table 2. Comparison of test result of reinforced concrete column with calculation results by codes
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表 3 素混凝土柱试验结果与规范计算结果对比
Table 3. Comparison of test results of plain concrete column and calculation results using codes
下载: 导出CSV
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[1] 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]. (in Chinese). [2] JTG D61—2005, 公路圬工桥涵设计规范[S].JTG D61—2005, code for design of highway masonry bridges and culverts[S]. (in Chinese). [3] 杨稚华. 万县长江大桥的设计[C]∥中国公路学会. 中国公路学会2001年学术交流论文集. 北京: 中国公路学会, 2001: 208-221.YANG Zhi-hua. Design of Wanxian Yangtze River Bridge[C]∥China Highway and Transportation Society. 2001Academic Symposium of China Highway and Transportation Society. Beijing: China Highway and Transportation Society, 2001: 208-221. (in Chinese). [4] 王国鼎, 钟圣斌. 拱桥[M]. 第二版. 北京: 人民交通出版社, 2000.WANG Guo-ding, ZHONG Sheng-bin. Arch Bridge[M]. 2nd Edition. Beijing: China Communications Press, 2000. (in Chinese). [5] 胡江顺, 陈四德, 苏明星. 双潭大桥——一座钢筋混凝土拱桥设计[J]. 中外公路, 2008, 28 (4): 156-159. https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200804046.htmHU Jiang-shun, CHEN Si-de, SU Ming-xing. Shuangtan Bridge—design on a reinforced concrete arch bridge[J]. Journal of China and Foreign Highway, 2008, 28 (4): 156-159. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200804046.htm [6] 尹超. 大跨度上承式钢筋混凝土箱肋拱桥设计[J]. 华北水利水电学院学报, 2010, 31 (1): 41-44. https://www.cnki.com.cn/Article/CJFDTOTAL-HBSL201001011.htmYIN Chao. Design on steel reinforced concrete-deck bowstring of large span arch bridge[J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2010, 31 (1): 41-44. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HBSL201001011.htm [7] ZHANG Jie, LIU Hai-qing. Research on closure scheme of long-span box arch bridge[C]∥RADIC J, CHEN Bao-chun. Proceedings of Chinese-Croatian Joint Colloquium on Long Arch Bridges. Brijuni Islands: Croatian University of Zagred, 2008: 261-268. [8] 过镇海, 时旭东. 钢筋混凝土原理和分析[M]. 北京: 清华大学出版社, 2011.GUO Zhen-hai, SHI Xu-dong. Reinforced Concrete Theory and Analyses[M]. Beijing: Tsinghua University Press, 2011. (in Chinese). [9] 陈家夔, 崔锦. 钢筋混凝土偏心受压中长柱的纵向弯曲[J]. 西南交通大学学报, 1980, 15 (3): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT198003000.htmCHEN Jia-kui, CUI Jin. Secondary bending of eccentricallly loaded medium slender reinforced concrete columns[J]. Journal of Southwest Jiaotong University, 1980, 15 (3): 1-8. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT198003000.htm [10] VENKATASUBRAMANI G S, YOHANNAN J C, PARAMESWARAN P. Analytical and experimental investigation on eccentrically loaded slender reinforced concrete columns[J]. Journal of Structural Engineering, 2007, 33 (5): 391-400. [11] 魏巍, 刘毅, 白绍良. 钢筋混凝土偏压杆件非弹性稳定的极限承载力分析[J]. 重庆建筑大学学报, 2000, 22 (增): 80-86. https://www.cnki.com.cn/Article/CJFDTOTAL-JIAN2000S1012.htmWEI Wei, LIU Yi, BAI Shao-liang. Ultimate load analysis of non-elastic stability of RC eccentrically compressed member[J]. Journal of Chongqing Jianzhu University, 2000, 22 (S): 80-86. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-JIAN2000S1012.htm [12] CHUANG P H, KONG F K. Large-scale tests of hinged slender reinforced concrete columns under eccentric loading[R]. Singapore: Nanyang Technological University, 1994. [13] 陈家夔, 崔锦. 关于修改我国钢筋混凝土结构设计规范(TJ10—74) 中偏心距增大系数η值的建议[J]. 西南交通大学学报, 1982, 17 (3): 13-28. https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT198203001.htmCHEN Jia-kui, CUI Jin. A proposed method of estimating the eccentricity magnification factorηspecified in TJ10—74code[J]. Journal of Southwest Jiaotong University, 1982, 17 (3): 13-28. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT198203001.htm [14] 国家建委建筑科学研究院. 钢筋混凝土结构研究报告选集[M]. 北京: 中国建筑工业出版社, 1977.Construction Academy Building Research Institute. Collections of the Research on the Reinforced Concrete Structure[M]. Beijing: China Architecture and Building Press, 1977. (in Chinese). [15] 中国建筑科学研究院. 钢筋混凝土结构研究报告选集2[M]. 北京: 中国建筑工业出版社, 1981.China Academy of Buiding Research. Collections of the Research on the Reinforced Concrete Structure 2[M]. Beijing: China Architecture and Building Press, 1981. (in Chinese). [16] 陈宝春, 叶琳. 我国混凝土拱桥现状调查与发展方向分析[J]. 中外公路, 2008, 28 (2): 89-96. https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200802027.htmCHEN Bao-chun, YE Lin. The present situation and development of the concrete arch bridges in China[J]. Journal of China and Foreign Highway, 2008, 28 (2): 89-96. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200802027.htm [17] 韦建刚, 陈宝春. 国外大跨度混凝土拱桥的应用与研究进展[J]. 世界桥梁, 2009 (2): 4-8. https://www.cnki.com.cn/Article/CJFDTOTAL-GWQL200902002.htmWEI Jian-gang, CHEN Bao-chun. Application and research advancement of long span concrete arch bridges abroad[J]. World Bridges, 2009 (2): 4-8. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GWQL200902002.htm [18] 叶琳. 平钢腹板-混凝土组合拱试设计研究[D]. 福州: 福州大学, 2007.YE Lin. Trial design of the flat steel web-concrete members[D]. Fuzhou: Fuzhou University, 2007. (in Chinese). [19] 杨卫忠, 刘伟. 砌体受压承载力计算[J]. 郑州大学学报: 工学版, 2003, 24 (4): 50-54. https://www.cnki.com.cn/Article/CJFDTOTAL-ZZGY200304012.htmYANG Wei-zhong, LIU Wei. Evaluation of load carrying capacity of masonry under compressive loading[J]. Journal of Zhengzhou University: Engineering Science, 2003, 24 (4): 50-54. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZZGY200304012.htm [20] 贾圣明, 全学友, 秦士洪, 等. 蒸压粉煤灰砖砌体轴心受压长柱受力性能试验研究[J]. 建筑砌块与砌块建筑, 2008 (6): 27-29. https://www.cnki.com.cn/Article/CJFDTOTAL-QKQK200806012.htmJIA Sheng-ming, QUAN Xue-you, QIN Shi-hong, et al. Experimental research on the properties of axial compression long columns of autoclaved flyash-lime brick masonry[J]. Building Block and Block Construction, 2008 (6): 27-29. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-QKQK200806012.htm [21] 杨伟军, 祝晓庆, 马丽慧. 多功能混凝土空心砌块砌体受压承载力试验研究[J]. 长沙交通学院学报, 2006, 22 (1): 32-35. https://www.cnki.com.cn/Article/CJFDTOTAL-CSJX200601006.htmYANG Wei-jun, ZHU Xiao-qing, MA Li-hui. Experimental study on the compressive capacity of multi-functional concrete hollow block masonry[J]. Journal of Changsha Communications University, 2006, 22 (1): 32-35. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-CSJX200601006.htm [22] 徐春一. 蒸压粉煤灰砖砌体受力性能试验与理论研究[D]. 大连: 大连理工大学, 2011.XU Chun-yi. Experimental and theoretical research on the mechanics behavior of autoclaverd fly ash brick masonry[D]. Dalian: Dalian University of Technology, 2011. (in Chinese). [23] 杨国胜, 邵联银. 浅谈钢筋混凝土系杆拱桥的施工工艺控制[J]. 筑路机械与施工机械化, 2012, 29 (5): 70-73. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201205047.htmYANG Guo-sheng, SHAO Lian-yin. Discussion on control of construction technology of steel concrete tied-arch bridge[J]. Road Machinery and Construction Mechanization, 2012, 29 (5): 70-73. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201205047.htm [24] 张华. 兰新铁路大跨度系杆拱桥施工[J]. 筑路机械与施工机械化, 2012, 29 (3): 67-69. https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201203028.htmZHANG Hua. Construction of long-span tied arch bridge of lanxin railway[J]. Road Machinery and Construction Mechanization, 2012, 29 (3): 67-69. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZLJX201203028.htm [25] 王引富, 刘汉夫. 铁路圬工桥墩临界荷载的非线性分析[J]. 石家庄铁道学院学报, 1996, 9 (3): 69-73. https://www.cnki.com.cn/Article/CJFDTOTAL-SJZT199603011.htmWANG Yin-fu, LIU Han-fu. The non-linear analysis of the longitudinal bending critical load of concrete and masonry piers[J]. Journal of Shjiazhuang Railway Institute, 1996, 9 (3): 69-73. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-SJZT199603011.htm -
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