斜简支梁桥支点剪力计算方法的研究  

Study on shearing force calculation method for skew simply beam bridge

作　　者：宋娃丽[1] 史帆[1] 王荣霞[1] 

机构地区：[1]河北工业大学土木与交通学院,天津300401

出　　处：《河北工业大学学报》2017年第2期113-118,共6页Journal of Hebei University of Technology

基　　金：2016年廊坊市科技支撑计划(2016013073)

摘　　要：以某斜简支T形梁桥为研究对象,通过建立空间力学模型,分析了不同斜度下斜梁桥的荷载传递机理,并计算和比较了由汽车荷载所引起的正交桥与斜桥的支点剪力,指出杠杆原理法在斜梁桥内力计算中的局限性.为优化斜梁桥在汽车荷载下支点剪力的计算方法,提出混合影响线法并明确了斜梁桥通过混合影响线法计算支点剪力的具体步骤.通过该方法计算得到的斜梁桥内力结果与模型计算结果相符,且该方法理论明确,计算简便,可应用于工程实际.For a skew T-beam supported simply bridge, the space mechanics model established to calculate and compare the shearing force caused by vehicle load, and analyze the load transfer mechanism of skew beam bridge with different an- gles. The limitations of lever principle method is indicated. In order to optimize the traditional calculation method for shearing force, the mixed influence line method is proposed and the procedure of this method is cleared. The results ob- tained with mixed influence line method a^ree with the theoretical model value, and this method is practical.

关 键 词：斜简支梁桥 支点剪力 混合影响线 汽车荷载 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]