The supervise points of under water concrete pile foundation of bridge;

Prevention of underwater cast-in-situ concrete pile breaking and its processing

By combining with the work experiences,the paper emphasizes on the introduction of the common quality problems of the beating or pressing and grouting concrete piles construction,analyzes the reasons,and sums up some regular treatment methods and the technological measures,so as to avoid or reduce similar quality problems,and to ensure the safety of the buildings.

The engineering practice of plain concrete pile composite foundation;

Application of plain concrete piles to treatment of deep and thick soft soil foundation;

The application of composite foundation of plain concrete pile in chemical equipment reformation;

The development of pre-tensioned prestressed concrete tubular pile in China;

Through an engineering example,a comprehensive treatment technology of wastewater from production of concrete tubular pile is introduced.

The advantages of this processing method of the concrete tubular pile are pollution-free,low noise and moderate cost of construction.

Construction control of high-strength prestressed concrete pipe pile driven by hammer;

Application of high?strength prestressed concrete pipe pile;

in concrete pipe piles under lateral load.

Combined with practical work,in view of the problems encountered in construction processes of manual hole digging pile such as un-derground water,shifting sand,mud and so on corresponding treatment measures are discussed as well as pouring construction of pile concrete.