非全形圆桩抗弯性能及抗震性能分析.pdfVIP

ABSTRACT The flexural behavior and shear behavior of prestressed concrete pipe pile are poor in practical engineering experience. The number of stories of the civil architecture using prestressed concrete pipe pile can not exceed 18, which is regulated in Technical code for prestressed concrete pipe pile, which greatly limits the application of prestressed concrete pipe pile in practical engineering. In order to obtain enough seismic performance, it is necessary to improve the prestressed concrete pipe pile. This is very important to generalizing precast pile and ensuring the safety of the engineering. A new kind of pile (non-holomorphic circular pile ）is designed, according to national building standard design atlas: prestressed concrete pipe pile (10 SG409) . Characteristics of soft clay and seismic fortification intensity of Tianjin are considered in the designing process of this new pile. The non-holomorphic circular pile is a special-shaped pile, in which the pretensioning method is used. The vertical bearing capacity of non-holomorphic circular pile is high,and The non-holomorphic circular pile can meet the requirements of some region on the property of pile foundation. Based on finite element method, finite element models of non-holomorphic circular pile are set up with ABAQUS to study the flexural behavior and Seismic Behavior of non holomorphic circular in this paper. Finite element models of cylindrical pile are set up to study the difference between non-holomorphic circular pile and cylindrical pile. The main conclusions of this paper are as follows: The ultimate bearing capacities of non-holomorphic circular