摘要
以一座半径120 m,宽15.5 m的现浇连续箱梁桥为例,采用慧加软件建立单梁、折面梁格计算模型,通过计算对比,指出该桥的曲线内侧腹板与曲线外侧腹板受力的差异,同时指出以单梁模型为基础的钢束设置存在应力不满足规范的情况,折面梁格模型可以准确反应各道腹板剪力的分配,更好地指导预应力钢束的设置。
Taking a radius of 120 m,15. 5m wide situ continuous box girder bridge for example,single-beam and fold-surface beam-grid calculating model were established using WISEPLUS in article. By calculating contrast,the stress differences of the inside curve of web and the outside curve of web were pointed out. The stress of prestressed tendons setting basing on single-beam calculating model did not meet specification requirements. The more accurately reflecting the shear distribution of each web and the better guidance of prestressed tendons setting can be achieved in the fold-surface calculating model.
出处
《河南城建学院学报》
CAS
2015年第5期16-21,45,共7页
Journal of Henan University of Urban Construction
关键词
小半径
弯桥
单箱多室
折面梁格
small radius
curved-bridge
multi-room single box
fold-surface beam-grid
