拱-斜柱结构研究及其在斜坡上的应用  

Research on Arch-Inclined Column Structure and Its Application on Slope

作　　者：刘向刚 陈剑峰 LIU Xianggang;CHEN Jianfeng(College of Civil Engineering,Chongqing University,Chongqing 400045,China;CMCU Engineering Co.,Ltd.,Chongqing 400039,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]中机中联工程有限公司,重庆400039

出　　处：《结构工程师》2025年第1期55-65,共11页Structural Engineers

摘　　要：位于陡峭斜坡上的异形建筑,用常规的掉层结构或吊脚结构难以实现。针对这种地形下的异形建筑,提出并设计了一种拱-斜柱结构,该结构既能较好地适应建筑造型,又能解决基础设置的难题。针对这种结构,利用参数化分析方法,详细分析了拱轴线形状、拱矢跨比、拱倾斜角度和柱倾斜角度等关键参数对结构受力性能和拱翘曲效应的影响。分析结果表明:拱的矢跨比对拱截面弯矩影响较小,对拱截面轴力影响较大,同时矢跨比对结构的稳定性也有较大影响;综合考虑建筑效果、结构受力和结构稳定性,拱的矢跨比宜控制在0.2~0.3之间;当拱矢跨比在0.2~0.3之间时,拱轴线形状对结构受力的影响可以忽略;拱倾斜角度的增加使得拱的扭矩快速增加,拱脚和拱顶的翘曲效应明显,箱型截面强度验算时,应考虑扭转翘曲效应;柱倾斜角度的增加使得拱的内力减小,有利于拱受力,可以通过调整柱倾斜角度来改善结构受力。The special-shaped building located on the steep slope is difficult to be realized with the conventional structure supported by foundations with different elevations or stilted building structure.Aiming at the special-shaped building under this terrain,a arch with inclined column structure was proposed and designed,which can not only better adapt to the architectural shape,but also solve the problem of foundation setting.Aiming at this structure,the influence of key parameters such as arch axis shape,arch rise-span ratio,arch tilted angle and column tilted angle on the mechanical performance and arch warping effect were analyzed in detail by using parametric analysis method.The results show that rise-span ratio has little influence on the bending moment of the arch and great influence on the axial force of the arch.Meanwhile,rise-span ratio also has great influence on the stability of the structure.Considering the architectural effect,structural force and structural stability,the rise-span ratio of the arch should be controlled between 0.2 and 0.3.When the rise-span ratio of arch is between 0.2 and 0.3,the influence of arch axis shape on structural stress can be ignored.With the increase of arch tilted angle,the section torque of arch increases rapidly,and the warping effect of arch foot and vault is obvious.When checking the strength of steel box section,the warping effect should be considered.The increase of column tilted angle reduces the internal force of arch,which is conducive to the stress of arch,and the stress of the structure can be improved by adjusting the tilted angle of the column.

关 键 词：拱 斜柱 矢跨比 结构稳定 计算长度系数 扭转翘曲效应 

分 类 号：TU391[建筑科学—结构工程]