The use of computer to calculate internal force in double-hole case culvert;

Not only the special node method for dealing with the different condi- tions of boundary and support is used, but also the method of continuous beam for solving the internal force of multiple opening box-type culvert program is suggested.

Quality control of jacking construction for long-span box culvert with deep overburden soil;

Study on the disease of box culvert in high filling subgrade and treatment measures;

Design method for length of grids inserted in the front of a box culvert surrounded by pipe-roof;

In the project of cross-under the highway with pipe roof and culvert box method,the interspace between culvert box and pipe roof is limited by several factors.

To estimate the resistance of thrust correctly during the process of the culvert box jacking is one of the main factors to construct the project successfully.

At present,during the construction of advancing culvert box at home and abroad,the soil in front of box should be reinforced to retain stability.