单肢空心墩和双肢实心墩在高墩连续刚构主墩方案中的比选研究

Comparison and Study on Single-column Hollow Pier and Double-column Solid Pier in Main Pier Scheme of High-pier Continuous Rigid Frame

对某跨径为55 m+100 m+100 m+55 m的山区连续刚构的主墩截面形式进行方案比选时,以施工便利为前提,选取等截面单肢空心墩和等截面双肢实心墩2种方案,从截面刚度、稳定性、经济性等方面作了比选研究。结果表明:在消耗同等工程量的情况下,单肢空心墩的整体刚度和稳定性要优于双肢实心墩。

This paper compares and studies the schemes of the main pier section form of a continuous rigid frame with the 55+100+100+55-m spans in mountainous area. Taking the construction convenience as the premise and using two schemes of uniform section single-column hollow pier and uniform section double-column solid pier, this paper compares and studies the section rigidities, stabilities and economical efficiencies. The result shows that the integral rigidity and stability of single-column hollow pier is better than the double-column solid pier.