【摘要】 介绍了 4片部分预应力混凝土 (PPC)箱形变截面连续梁的主要试验结果 ,研究了其静力全过程的特点 ,并讨论了PPC连续梁弯矩重分布的情况。此外 ,还对截面塑性极限强度问题进行了探讨 ,提出了大跨PPC变截面连续梁极限强度设计的建议。更多还原

【Abstract】 The main static test results of 4 pieces of Partially Prestressed Concrete(PPC) continuous box girder bridge with variable cross section are introduced, and the whole static test process is investigated. Meanwhile, the moment rearrangement of PPC continuous box girder is discussed. In addition, the plastic ultimate strength of cross section and some proposals concerning the ultimate strength design of long span PPC continuous box girder with variable cross section are discussed and suggested.更多还原