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Xiong B.,China Railway Eryuan Engineer Group Co.
Journal of Railway Engineering Society | Year: 2014

Research purposes: There are widely distributing of rocky heaps along the highway in weiyuan, a typical Sichuan Basin red beds landform. If handled improperly, the safety and investment of the highway will bring great risk. Through the analysis of the influencing factors , such as the form, the composition and the mechanical properties of the rocky heaps, as well as groundwater, the stability and the engineering measures were studied. Research conclusions: (1)The single-slop is the mostly type of the rocky heap in the projection, anchor pile is the main reinforcement measure of the unstable rocky heaps caused by the subgrade engineering; (2)There is a layer of low liquid limit clay folder gravel on top of the rocky heap, and lower stone soil folder low liquid limit clay on the bottom, it has obvious layered characteristics, the interface of the soil-rock and the different soil layer are the mostly potential sliding surface; (3)The groundwater is well developed, the drainage of slop and underground water of the rock heaps should be strengthened; (4) The research results can provide references for the similar projects.

Jin S.-A.,Xian High Voltage Apparatus Research Institute | Liu C.-F.,Xian High Voltage Apparatus Research Institute | Wu S.-B.,Xian High Voltage Apparatus Research Institute | Chen G.,China Railway Eryuan Engineer Group Co. | And 3 more authors.
Gaoya Dianqi/High Voltage Apparatus | Year: 2013

As a key component of power transmission and distribution systems, disconnector have suffered serious damage in previous earthquakes. Generally, typical destruction feature of disconnector during earthquakes appears as the breaking at bottom of insulator porcelain posts. In this paper, taking a typical 252 kV disconnector as an example, study the seismic behavior of 3 km-altitude disconnector on finite element and compare with low-altitude disconnector. The two kind of disconnector can't be satisfy earthquake-resistent design of AG5.

Liu W.,China Railway Eryuan Engineer Group Co. | Chen K.-J.,China Railway Eryuan Engineer Group Co. | You L.-H.,China Railway Eryuan Engineer Group Co.
Journal of Railway Engineering Society | Year: 2013

Research purposes: The Hutiaoxia Jinsha River Bridge is the key project of Lijiang-Xianggelila Railway and is located in the sensitive environmental and high seismic intensity region with the active fault. The reasonable bridge site and type should be selected for this bridge on consideration of the railway alignment, environment protection, topography, geological condition and the plan of hydraulic engineering on the midstream of the river. Research conclusions: (1) Using the deck type steel braced arch at the No. 8 bridge site (416 m) of the Hutaioxia Jinsha River Bridge is the best engineering plan. Using the steel truss suspension bridge at No. 27 bridge site (98+660+98 m) can remain the condition for the hydroelectric plan of river and can get the better economic and social benefits. (2) The deck type steel braced arch has features of the good load bearing capacity, good rigidity and nice looking and is suitable for the high mountain and deep valley area, but it produces the impact on the water storage and shipping under bridge because the arch rib is installed on bottom of the structure. (3) The steel truss suspension bridge has the features of the fine anti-seismic performance and good rigidity to meet the train requirement. (4) The research result can provide the reference to the type selection of the large span railway bridge in mountain and deep valley area.

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