铁路桥梁圆端形桥墩与桩基础极限状态设计方法研究
发布时间：2018-07-22 15:43
【摘要】：当前,国际桥梁工程设计的主流方法已经完成了由容许应力法向基于可靠度理论的极限状态法的转变。我国铁路桥梁工程目前仍然采用容许应力法进行设计计算,而日本、欧洲、美国等发达国家均采用基于可靠度理论的极限状态设计方法。为了和国际接轨,目前我国正在进行铁路桥梁设计规范由容许应立法转为极限状态法的工作。 本文在2011年版《铁路桥涵设计规范(极限状态法)》(送审稿)有关研究成果的基础上,借鉴国内外规范的先进技术和研究成果,调研并收集有关资料,编写铁路桥梁重力式墩台截面计算程序,以现行桥规和工程实践经验为依托,对铁路桥梁圆端形空心墩,实体墩可靠度指标进行检算。在可靠度指标计算过程中,进行了作用参数的统计工作,对作用进行了分类计算。为了计算截面受压区面积,编写了圆端形桥墩截面受压区面积计算程序。对圆端形空心墩和实体墩5套标准图176个桥墩进行了正常使用极限状态和承载能力极限状态可靠度指标的检算,并对检算结果进行了分析。 依据2011年版《铁路桥涵设计规范(极限状态法)》(送审稿)关于桩基础的规定编写了桩基础单桩承载力计算程序,程序包括四个计算模块,分别为：打入、震动下沉和桩尖爆扩桩；钻(挖)孔灌注桩；岩石层上的打入、震动下沉桩(包括管柱)；支撑于岩石层上与嵌入岩石层内的钻(挖)孔灌注桩及管柱。对比了我国规范与欧洲规范关于桩基础的的规定。选择了两个算例,依据欧洲规范和我国规范进行了对比计算,并用编写的桩基础单桩承载力计算程序对算例进行了计算。通过对结果的对比,分析我国规范与欧洲规范的桩基础计算结果差异。为将来新规范下桩基础的桩侧抗力分项系数和桩端抗力分项系数的修订提供数据支持。
[Abstract]:At present, the mainstream method of international bridge engineering design has completed the transition from the allowable stress method to the limit state method based on reliability theory. At present, the allowable stress method is still used in the design and calculation of railway bridge engineering in China, while in Japan, Europe, the United States and other developed countries, the limit state design method based on reliability theory is adopted. In order to connect with the international standards, the design code of railway bridges is being changed from the allowable legislation to the limit state method. On the basis of the relevant research results of 2011 edition of Railway Bridge and culvert Design Code (limit State method) (submitted draft), this paper draws lessons from the advanced technology and research results of domestic and foreign norms, investigates and collects relevant data. Based on the existing bridge rules and engineering experience, the calculation program of gravity pier and abutment section of railway bridge is compiled to check and calculate the reliability index of round end hollow pier and solid pier of railway bridge. In the process of calculating the reliability index, the statistical work of the action parameters is carried out, and the action is classified and calculated. In order to calculate the area of the section under pressure, a program is developed for calculating the area of the section of the round end pier. The reliability indexes of the limit state of normal use and the limit state of bearing capacity of 176 piers are checked and calculated for 5 sets of standard figure of round end hollow pier and solid pier, and the results are analyzed. According to the regulations of the 2011 edition of the Code for Design of Railway Bridges and culverts (limit State method) on pile foundation, the calculation program of single pile bearing capacity of pile foundation is compiled. Vibration sinking and pile tip exploding pile; drilling-hole cast-in-place pile; driving on rock stratum, driving pile under vibration (including pipe string); drilling (digging) pile and pipe string supported on and embedded in rock stratum. The regulations on pile foundation of Chinese code and European code are compared. Two calculation examples are selected and calculated according to the European Code and the Chinese Code. The calculation examples are calculated with the program compiled for calculating the bearing capacity of single pile on the pile foundation. By comparing the results, the difference of pile foundation calculation results between Chinese code and European code is analyzed. It provides the data support for the revision of pile side resistance coefficient and pile end resistance coefficient under the new specification.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.13;U442
本文编号：2137949
[Abstract]:At present, the mainstream method of international bridge engineering design has completed the transition from the allowable stress method to the limit state method based on reliability theory. At present, the allowable stress method is still used in the design and calculation of railway bridge engineering in China, while in Japan, Europe, the United States and other developed countries, the limit state design method based on reliability theory is adopted. In order to connect with the international standards, the design code of railway bridges is being changed from the allowable legislation to the limit state method. On the basis of the relevant research results of 2011 edition of Railway Bridge and culvert Design Code (limit State method) (submitted draft), this paper draws lessons from the advanced technology and research results of domestic and foreign norms, investigates and collects relevant data. Based on the existing bridge rules and engineering experience, the calculation program of gravity pier and abutment section of railway bridge is compiled to check and calculate the reliability index of round end hollow pier and solid pier of railway bridge. In the process of calculating the reliability index, the statistical work of the action parameters is carried out, and the action is classified and calculated. In order to calculate the area of the section under pressure, a program is developed for calculating the area of the section of the round end pier. The reliability indexes of the limit state of normal use and the limit state of bearing capacity of 176 piers are checked and calculated for 5 sets of standard figure of round end hollow pier and solid pier, and the results are analyzed. According to the regulations of the 2011 edition of the Code for Design of Railway Bridges and culverts (limit State method) on pile foundation, the calculation program of single pile bearing capacity of pile foundation is compiled. Vibration sinking and pile tip exploding pile; drilling-hole cast-in-place pile; driving on rock stratum, driving pile under vibration (including pipe string); drilling (digging) pile and pipe string supported on and embedded in rock stratum. The regulations on pile foundation of Chinese code and European code are compared. Two calculation examples are selected and calculated according to the European Code and the Chinese Code. The calculation examples are calculated with the program compiled for calculating the bearing capacity of single pile on the pile foundation. By comparing the results, the difference of pile foundation calculation results between Chinese code and European code is analyzed. It provides the data support for the revision of pile side resistance coefficient and pile end resistance coefficient under the new specification.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.13;U442
【参考文献】
相关期刊论文 前10条
1 朱尔玉,许克宾;蒙特卡罗改进法求解可靠度编程中的问题及解决方法[J];北方交通大学学报;1999年04期
2 谢楠;王大力;张弥;朱尔玉;王勇;;隧道复合衬砌运营期可靠性评价方法[J];工程力学;2007年S1期
3 常生福;;圆形截面钢筋混凝土受弯构件正截面承载力的简化计算[J];中国港湾建设;2010年02期
4 肖息桂;唐生福;石宝;;“用二分法求方程的近似解”的教学思考[J];桂林师范高等专科学校学报;2008年03期
5 吕志涛;钢筋混凝土双向偏心受拉构件正截面强度的计算[J];建筑结构学报;1981年05期
6 黄海;林穗华;;几种修正拟牛顿法的比较[J];广西民族师范学院学报;2011年03期
7 朱旭东;;工程结构可靠度计算方法的比较研究[J];中国水运(学术版);2007年04期
8 朱尔玉,李廷春;矩形和圆形截面重力式桥墩台双向偏心受压下截面极限承载力实用计算方法[J];铁道标准设计;2004年03期
9 高策;薛吉岗;;铁路桥梁结构设计规范由容许应力法转换为极限状态法的思考[J];铁道标准设计;2012年02期
10 朱尔玉;刘磊;海潮;;双向偏心受压下圆端形重力式桥墩台极限承载力的计算[J];铁道工程学报;2005年06期
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