Secondly,based on theoretical analysis,the paper statistics and analysis the data of the static load test results of 15 typical jacked-in pipe pile in Songhua river floodplain areas.

According to the data analysis of static load tests,geological exploration reports and construction records of jacked-in PHC pipe pile of the representative projects in the Songhua River floodplain areas,and based on the actual ultimate vertical bearing capacity of a single pile calculated by Q~s curve,the increase coefficients of ultimate tip resistance standard value are obtained,which is 1.

The relation between ground bearing-capacity and the standard penetration experiment of floodplain area;

Review on the evaluation of water resources quality in Songhuajiang basin;

Study on the relationship between flooding and the infection of schistosoma in the river beach area;

Though a study of working days per year of the workers in major vocations in Songjiang of the early nineteenth century,the author has found that the majority of them worked around 300 days or more a year.