Mechanil Test Of Prefabricated Joint Of Wind-resistant Open Cut Tunnel Of Second Lanzhou-xinjiang Railway

In recent years,with the rapid development of China’s western development strategy,high-speed railway planning is becoming more and more intensive.The Long-term railway development plan proposed to focus on the western region,the construction of the western development of new railway lines,improve the western region’s transport system,accelerate the development of the western economy,focusing on Sichuan,Chongqing,Guangxi,Gansu,Shaanxi,Xinjiang And other provinces to carry out the planning of the railway network.The original Lanzhou-Xinjiang Railway operation ability and operation quality has lagged behind,second Lanzhou-Xinjiang railway came into being,it will be built in the Xinjiang region links with the mainland bond,playing an important effect on promoting economic growth and social development in Xinjiang As second Lanzhou-Xinjiang railway through a number of amazing speed along the wind area,It is essential to take wind measures.To ensure traffic safety,a comprehensive study using prefabricated concrete wind-resistant open cut tunnel to isolate sand is used in high-speed rail of the world wind wind-resistant open cut tunnel performed first.In this paper,wind-resistant open cut tunnel of second Lanzhou-Xinjiang railway engineering-based,open cut tunnel prefabricated joints mechanical test methods for the study,the main research content and results are as follows:(1)Through wind tunnel structure in the form of theoretical analysis and comparison of different situations under construction open cut-tunnel advantages and disadvantages,The form of wind tunnel structure,construction methods and prefabricated joint connection.are determined.(2)To determine the optimal form of prefabricated rigid couplings,Different types of rigid joints between prefabricated conduct tensile,compression,shear and other mechanical properties test data and comparative analysis.(3)The optimal head member indirect connection is determined through mechanical testing comparative analysis from wind between open cut-tunnel prefabricated three different headers way.