摘要
为了得到大件运输车载下斜交T梁桥的响应特征,基于大件运输车载数据,提出了4种大件运输车辆的加载模型;研究了简支斜交T梁桥的跨径和斜交角度对大件运输车载效应的响应规律。研究发现:随着斜交角的增大其弯矩极值、位移极值和扭矩极值均增大,而剪力极值先减小后增大;随着跨径的增大其弯矩极值、剪力极值和位移极值均增大,而扭矩极值随着跨径的增加呈现波动变化但总变化仍呈增加趋势;斜交角度对预应力简支斜交T梁桥响应结果影响较大,其决定着响应的变化趋势,而跨径几乎不影响其变化趋势仅对响应的变化幅度有影响。
In order to obtain the response characteristics of skew T-beam bridge under heavy cargo transportation vehicle,four loading models of heavy cargo transportation vehicles are proposed based on the data of heavy cargo transportation vehicle;The response law of span and skew angle of simply supported skew T-beam bridge to vehicle effect of heavy cargo transportation is studied.It is found that with the increase of skew angle,the extreme value of bending moment,displacement and torque increase,while the extreme value of shear decreases first and then increases;With the increase of span,the extreme value of bending moment,shear force and displacement increase,while the extreme value of torque fluctuates with the increase of span,but the total change still increases;Skew angle has a great influence on the response results of prestressed simply supported skew T-beam bridge,which determines the change trend of response,while span has little influence,and its change trend only affects the change range of response.
作者
刘韬
陈鹏涛
LIU Tao;CHEN Peng-tao(Jiangxi Communications Investment Group Co.Ltd.,Nanchang 330025,China;School of Highway Chang'an University,Xi'an 710064,China)
出处
《工程建设与设计》
2022年第23期86-89,共4页
Construction & Design for Engineering
基金
江西省交通运输厅科技项目(2022H0013)。
关键词
桥梁工程
斜交T梁桥
大件运输车辆
bridge engineering
skew T-beam bridge
heavy cargo transport vehicle
