摘要
随着桥梁施工工艺的发展,顶推技术已经普遍应用于各类桥梁的建造。顶推施工过程中,桥梁受力体系的转换相对更为复杂,对误差的控制也更加严格,但在某些特殊条件下,仍存在落梁后支座脱空的可能。文章结合某实际工程,研究其在支座脱空时的钢梁受力并验算桥墩的承载能力,检验这种工况下桥梁的安全性,为落梁的管控与实施提供技术分析。
With the development of bridge construction technology,incremental launching technology has been widely used in the construction of various bridges.In the process of incremental launching construction,the transformation of bridge stress system is relatively more complex,and the error control is stricter.However,under some special conditions,there is still the possibility of the falling of the back bearing of falling beam.Combined with a practical project,the steel beam stress during the bearing falling is studied,and the bearing capability of the bridge is checked by calculation to check the security of the bridge under this condition,so as to provide technology analysis for the manage,control and implementation of the falling beam.
作者
蔡洁
陈佳欢
Cai Jie;Chen Jiahuan(Hubei University of Technology,Wuhan 430000,China)
出处
《江苏科技信息》
2021年第6期48-50,共3页
Jiangsu Science and Technology Information
关键词
顶推
落梁
支座脱空
incremental launching
falling beam
the falling of the bearing