【摘 要】
:
In order to resolve the durability problems of the damaged expansion joints and beatings during the service life of simply supported bridges,the idea of The only good joint is no joint was articulated
【机 构】
:
College of Civil Engineering,Fuzhou University,Fuzhou,Fujiang,China
【出 处】
:
The 7th International Conference on Bridge Maintenance, Safe
论文部分内容阅读
In order to resolve the durability problems of the damaged expansion joints and beatings during the service life of simply supported bridges,the idea of The only good joint is no joint was articulated.The concept of lAB could be advantageously used in many situations,not only for the construction of new bridges,but also for the strengthening of existing bridges.
其他文献
通过研究国内外铆接技术现状,创新采用双铆合胎工艺、横梁预装工艺、吊运复合翻转方案、工位叠加方案和贯通式物流方案等,该铆接线通过采用国内外先进技术及创新设计生产效率比设计值提高了41%以上,铆接线性能稳定可靠,生产节奏均衡,使用效果良好,产品质量达到国内领先水平。
本文介绍了利用关节臂测量机测量汽车轮辐厚度的方法,阐述了如何通过关节臂扫描仪扫描点云数据,对汽车轮辐的厚度进行测量和对比分析.本文采用关节臂扫描仪扫描轮辐零件数据,再通过Geomagic Qualify软件进行厚度分析的方法,可以方便快捷地进行所需位置厚度的分析,数据全面可靠,很好地解决了轮辐厚度在测量上所遇到的难题,从而保证了车轮零件的可靠性和安全性,值得推广。
本文应用多体动力学理论建立了动力总成悬置系统模型并对其进行仿真分析.提出了一种悬置系统的振动多属性开发方法,应用该方法可以进行车内振动响应的多属性设计.在动力总成悬置系统开发初期,悬置系统的刚度设计应满足起动工况、怠速工况、加速工况和过减速带等冲击工况的需要.研究表明,悬置系统的振动多属性开发可以在研发初期兼顾各工况下不同的隔振与限位要求.
基于噪声衰减量的隔声理论,通过研究小混响室声场均匀性,本文提出了一种整车隔声性能主观评价方法.该方法将两辆车同时停放在混响室,室内触发白噪声,车内主观评价车辆的整车隔声性能,从而分析空气噪声对车内声品质的影响.同时,本文对车辆的车内噪声进行了客观测试,结果表明白噪声激励下的主观评价结果与客观测试分析结果一致.
模态分析在轻型车开发过程中应用越来越广泛,是轻型车正向设计的一种重要手段.在对发动机激励深入了解的基础上,运用模态分析法,将轻型车转向柱总成模态规划在发动机怠速与常用转速点火激励频率之间,在实车状态下对转向柱总成进行模态、振动试验,试验结果证实了模态规划的合理性.
路面噪声的激励源及传达系统复杂,从路面传递给轮胎的力难以精确测量,因此,定量预测路面噪声非常困难.在工程上,为了定量、定性地预测路面噪声,常使用等价路面粗糙度来描述路面传递给轮胎的激励力.本文通过CAE模型、试验数据相结合的方法,论述等价路面粗糙度的概念,并在此基础上对悬架系统振动和车内噪声进行预测,确认了路面粗糙度的有效性.在悬架系统的设计阶段,使用等价路面粗糙度,通过数值计算和试验相结合的方法
Cracks in concrete are general and ubiquitous defects in bridges.The early age non-structural cracks are usually due to cement hydration and shrinkage deformation (autogenous shrinkage and drying shri
Experimental observations have concluded stress range and mean stress to be the two major load parameters that govern fatigue life of a structure like a bridge.This article discusses the effect of mea
In order to prevent transverse girder falling under intensity area and guarantee the safe of bearing,the common measure is to set up transverse restrainer device,such as block and shear key.Previous b
The Health,safety and environment (HSE) management had been applied in petroleum chemical industry,construction of expressways and bridges and so on in China.During detail design of Hong Kong-ZhuhaiMa