摘要
以20 m T梁为对象,使用MIDAS建立直桥与弯桥模型,通过进行对比分析。研究弯桥直做法主梁的内力和相同跨径直桥主梁内力之间的差异。结果表明对二级公路中设计速度为60 km/h平曲线半径介于125 m和200 m之间的弯桥直做法的简支梁桥设计中,控制应力可在等跨径直桥的相应设计值基础上增大12%。
Through analysis of models of straight bridge and curved bridge,research on the difference of the internal force on the T-beams between the straight fabrication of curved bridge and the straight bridge of same span.The conclusions are as below:in the design of simple supported beam bridge,in the second-class highway with the design speed of 60 km/h,and the plane curve radius between 125 m and 200 m,control force can be 12% more than the design value of the straight bridge with same span.
出处
《科学技术与工程》
2011年第8期1859-1862,1867,共5页
Science Technology and Engineering
关键词
弯桥直做
20mT梁
内力影响
the straight fabruication of curved bridge 20 m T-beam internal force influence