Based on the construction experiences of the intercepting sewer main engineering in the urban area of Zhangjiakou City and the Yangfang ewer main engineering of Xuanhua City, this paper sums up the construction quality diseases in the flexible joints of drainage pipelines system, analyzes the reasons of these quality diseases, and puts forward some preventive measures.

This article describes the concrete and reinforced concrete drain pipes with spigot and socket, rebated socket or steel-collar socket flexible joints, and the process for their fabrication.

This paper researches the mechanical property of the ductile interface,and analyzes the seismic performance of the UPVC underground water pipeline covered with soil through the experiment analysis of the flexible joint of the UPVC underground water pipelines covered with soil.

Research on low modulus silicon rubber formula and interface adhesion technology for flexible joints;

Study on ultrasonic detection for interface detection of flexible joint;

Nonlinear analysis on flexible joint with non-uniform elastomer;

This review will outline the recent progress in flexible docking and focus on the molecular dynamics simulation techniques.

By using “tabu search” algorithm and Gehlhaar potential function, a new approach is presented for flexible docking of protein and its “drug like” ligand has been developed.