基于静载试验的预应力混凝土连续梁桥承载能力研究
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摘要
检验桥梁的实际承载能力、结构变形及抗裂性能是否满足有关技术规范要求,通常需要对成桥进行静载荷载实验;而科学合理的静载试验方法是桥梁静载试验结果评定的保证。在简要阐述桥梁静载试验方法及静载试验存在问题的基础上,基于某五跨连续梁实际工程案例,从静载试验理论计算、测点布置、荷载布置、工况设计、承载能力评定等方面进行详细阐述并提出一些建议,为科学合理的桥梁静载试验方法提供有价值的参考。
Static load test is usually needed to check whether the actual bearing capacity,structural deformation and crack resistance of bridges meet the requirements of relevant technical specifications,and scientific and reasonable static load test method is the guarantee of static load test results evaluation of bridges. On the basis of expatiating on the method of bridge static load test and the problems existing in the static load test,this paper,based on a five-span continuous beam as a practical engineering case,expounds in detail the theoretical calculation of static load test,the arrangement of measuring points,the arrangement of loads,the design of working conditions and the evaluation of bearing capacity,and puts forward some constructions. It provides a valuable reference for the scientific and reasonable static load test method of bridges.
Static load test is usually needed to check whether the actual bearing capacity,structural deformation and crack resistance of bridges meet the requirements of relevant technical specifications,and scientific and reasonable static load test method is the guarantee of static load test results evaluation of bridges. On the basis of expatiating on the method of bridge static load test and the problems existing in the static load test,this paper,based on a five-span continuous beam as a practical engineering case,expounds in detail the theoretical calculation of static load test,the arrangement of measuring points,the arrangement of loads,the design of working conditions and the evaluation of bearing capacity,and puts forward some constructions. It provides a valuable reference for the scientific and reasonable static load test method of bridges.
引文
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[2]张俊平,周建宾,桥梁检测及维修加固[M].北京:人民交通出版社. 2006(4):211-214.
[3]谌润水,胡钊芳.公路桥梁荷栽试验[M].北京:人民交通出版社. 2002.
[4]李晓元,陈晨,王金川.浅谈桥梁检测技术的应用、研究和发展[J].科协论坛(下半月),2010(10):01-02.
[5]韩雨,杨伟.声波透射法在桥梁桩基检测中的案例分析[J].科学技术与工程,2011(07):1617-1619.
[6]尹彬彬,李金涛.荷载试验检测技术在桥梁技术状态评估中的应用[J].中国建材科技,2011(05):10-14.
[7]谢开仲,曾倬信,王晓燕.桥梁工程检测技术研究[J].广西大学学报(自然科学版),2003(01). 45-49.
[8]谢中尧.论公路桥梁的检测及技术应用[J].建材与装饰(中旬刊),2008(04):23-29.
[8]黄侨,李忠龙,吴红林,等.哈尔滨四方台斜拉桥成桥静动载试验研究[J].桥梁建设,2006(1):16. 18.
[9]马伟斌,韩自力,朱忠林.高速铁路路桥过渡段振动特性试验研究[J].岩土工程学报,2009(1):124. 128.
[10]邱法维,潘鹏.结构拟静力加载实验方法及控制[J].土木工程学报,2002,35(1):1—5.
[11]张献民,金喜莎,李少波,等.基于动静参数联合反演技术快速评定桥梁承载能力[J].公路交通科技,2015.