【摘要】 本文简要介绍了北京市西厢工程菜户营立交中独柱支承预应力混凝土弯箱连续梁桥在设计上的一些特点和采用的新技术、新工艺,对工程设计中遇到的一些问题及解决方法进行了较详细的论述。在结构分析方面,探讨了预应力弯箱梁桥的空间计算、力学模型的建立及抗扭刚度的计算方法,提出了平面曲线连续梁桥独柱支承合理偏心的计算方法。更多还原

【Abstract】 A brief introduction of design features and new techniques used in the prestressed continuous curved box beams with single support for Caihu-ying the fly-over in West Wing Project of Beijing is given in this paper.Some problems and their solutions met in the design are discussed in detail.In structure analysis, three-dimensional analysis, formulation of mechanicmodel and evaluation of torsional stiffness for prestressed concrete curvedbox bridge are discussed also. At the same time, calculation for the rea-sonable eccentricity of the single support of the continuous planar curvedbeam bridge is proposed.更多还原