大件运输车辆通行高速公路装配式桥梁结构响应特征研究
Research on the Structural Response Characteristic of Prefabricated Bridge for Heavy-cargo Transport Vehicle Passing Through Expressway
万正华1
作者信息
- 1. 中南安全环境技术研究院股份有限公司,湖北 武汉 430071
- 折叠
摘要
文章以预应力T梁为例,对装配式桥梁结构响应特征进行了研究.研究结果表明,当桥跨组合相同时,不同斜交角度桥梁的受力差异较大,且弯矩、剪力极值均随着斜角角度的增加而增大,可选取斜角角度较大的桥梁作为典型控制桥梁;当桥跨组合相同时,主梁片数为奇数的桥梁比主梁片数为偶数的桥梁受力更为不利,可选取主梁片数为奇数且桥宽小的桥梁作为典型控制桥梁;当单跨跨径相同时,不同跨数连续T梁的内力极值基本一致,但与简支T梁有一定区别,可选取简支梁及跨数较少的连续体系桥梁作为典型控制桥梁.
Abstract
Taking the prestressed T-beam as an example,the structural response characteristics of the prefabricated bridge are studied.The results show that when the bridge span combination is the same,the stress of bridges with different skew angles is quite different,the extreme values of bending moment and shear force increase with the increase of the skew angle,and the bridge with larger skew angle can be selected as a typical control bridge.When the bridge span combination is the same,the bridge with odd number of main beam segments is subjected to more unfavorable force than the bridge with even number of main beam segments,and the bridge with odd number of main beam segments and small bridge width can be selected as a typical control bridge.When the single span is the same,the internal force extreme values of continuous T-beams with different spans are basically the same,but there are some differences between continuous T-beams and simply supported T-beams,and simply supported beams and continuous system bridges with fewer spans can be selected as typical control bridges.
关键词
大件运输车辆/高速公路/装配式桥梁/结构响应Key words
heavy-cargo transport vehicle/expressway/prefabricated bridge/structural response引用本文复制引用
出版年
2024
NETL
NSTL
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