Analysis of working effect of welded turnout combination system;

In order to establish a model that can reflect the real force of the welded turnout, mechanical models as well as a software based on the finite element method　are established to evaluate the additional longitudinal force and displacement of the welded turnout combination system.

New gas pressure welding technology of high-railway's points;

The familiar diseases and the measures of points in the mine railway;

Design and Manufacturing of Tools and Platforms for Assembly and Inspection of Movable Point Crossing for High Speed Turnout;

Construction technology of speed-raising turnout in jointless railway;

Study on the Dynamical Performance of the Transition Sections around the Ends of the Turnouts on Dedicated Passenger Lines;

Electro-control of the switch during stops;

The construction technology of group switch change prime ballast once-and-for-all;

Analysis for the damage of track switch rocking arm in one launcher and the improved methods;

Reasonable selection of turnouts in station yard design;

When a 20,000-ton heavy-haul train passes alongside the turnouts in Datong-Qinghuangdao Line,the wear on the turnouts is heavy,and adding gaugetie bars is a main measure to reinforce the intersecting turnouts.

The spatial coupling model for railway turnout system is improved in which the vertical and lateral structure irregularities of turnouts and the variation of wheel/rail contact geometry are taken into account.