Strong end restraint provided by heavy elements, such as footings, can improve the flexural strength of critical column sections. 摘要基础等构件提供的端部强约束能提高柱临界截面的抗弯承载力。
Prestressed concrete pipe piles by post-tensioning method are widely used in harbor engineering because of its high flexural bearing capacity and low cost. 摘要后张法预应力混凝土大管桩由于抗弯承载力高和成本低等诸多优点，在港口工程中得到了广泛的使用。
