For shunting combination mold with small-size,thin-wall,complex cross section and large extruding coefficient,the design project and principle,design key points and its applicable range are introduced.

The concept of road segment congestion quotiety was introduced based on the information of travel time and segment length,and the traffic state matrix of the region was built.

On practice of enlarged compaction pile by tamping;

By adopting pile soil interaction of analogue compaction pile of round hole expansion theory,this article analyses the stress and strain of pile soil,builds calculated formula of dry density of pile soil,and proves the accuracy and practicability of calculate method through case study.

Combined with the construction practice,the paper introduced the principle,performance and design method of the liquefaction of vibrating sand compaction pile.

The experimental results show that the stitch length of glass fiber knitted fabrics is determined mainly by the stitch size,and the courses density has linear relationship with tightness factor of fabrics,and also the yarn linear density is the only factor which effects the fabric thickness.

Aiming at theories of the mix design of concrete,a kind of new method of concrete mix design named infilled coefficient mix design of concrete is provided based on the concept of infilled aggregate coefficient.