- CSCD核心中文核心科技核心
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8字结形格栅钢架腹筋力学作用试验研究
收稿日期: 2017-11-02
修回日期: 2018-02-07
网络出版日期: 2018-03-19
基金资助
蒙西华中铁路股份有限公司资助项目(ZSKY201601001-1); 国家自然科学基金资助项目(U1434206, 51678497)
Experimental Study of Mechanical Effect of 8shaped Diagonal Bar of Lattice Girders
Received date: 2017-11-02
Revised date: 2018-02-07
Online published: 2018-03-19
王刚 , 马兆飞 , 卢锋 , 仇文革 . 8字结形格栅钢架腹筋力学作用试验研究[J]. 隧道建设, 2018 , 38(2) : 217 -223 . DOI: 10.3973/j.issn.2096-4498.2018.02.009
The lattice girder is widely used in the construction of composite lining of mountaincrossing tunnel. In order to study the mechanical effect of 8shaped diagonal bar of lattice girder, a series of specimens are designed and the mechanical influence of diagonal bar diameter and welding length on lattice girder are studied. The results show that: 1) The capacity of the lattice girder does not reduce with the decrease of the diagonal bar diameter, while the optimization index increases substantially. 2) The diameter of diagonal bar should meet the requirements of fabrication, storage, transportation and installation of lattice girder. 3) The reduction of the welding length, which can reduce the manufacturing cost of lattice girder, affects the capacity of lattice girder little.
Key words: tunnel; lattice girders; diameter of diagonal bar; welding length; experimental test
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