独塔部分斜拉桥结构设计研究  

Study on Structural Design of Single-pylon Partial Cable-stayed Bridge

作　　者：刘世明[1] 李晓克[1] 赵顺波[1] 

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《河南大学学报（自然科学版）》2016年第6期724-731,共8页Journal of Henan University:Natural Science

基　　金：国家自然科学基金项目(51508189);长安大学实验室开放基金项目(2014G1502007);河南省教育厅科学技术研究重点项目(14A560004);河南省科技攻关计划项目(162102210234)

摘　　要：为研究独塔部分结构构造和设计方法,在广泛收集国内外已建独塔部分斜拉桥设计资料的基础上,列表给出了典型独塔斜拉桥的跨径布置、结构体系,主梁截面形式、高度、宽度及宽跨比,主塔布置形状、截面形式、塔高及高跨比,拉索索面数、形状、材料,在塔身、主梁上的间距等信息,对独塔部分斜拉桥的结构布置方法、主梁、主塔和拉索的结构构造及设计方法等进行了分析和总结.结果表明：独塔部分斜拉桥双跨布置时,副跨占主跨的比例为0.6-1.0,多跨布置时,副跨占主跨的比例为0.4-0.9;适用跨径范围为35-170m.主梁等高度布置时,梁高取主跨跨径的1/40-1/25;变高度布置时,塔根部主梁高度取主跨跨径的1/35-1/20,桥台处主梁为桥墩处主梁的1/1.8-1/1.5.主塔高跨比主要集中在1/5-1/2范围内.独塔部分斜拉桥索面可采用单索面、双索面和三索面形式;梁上的索距为4-6m,塔上索距大小与结构自重、斜拉索索面形状有关.In order to obtain the structural construction and design method of single-pylon partial cable-stayed bridge, based on the design information of domestic and foreign single pylon partial cable-stayed bridge collection, the list gave the typical single-pylon partial cable-stayed bridge＇s information such as span arrangement, structure system, section types, height, width and width-span ratio of the beam, arrangement form, section form, height, height-span ratio of the pylon, number of cable plane, shape, material, space in the pylon and beam of the cable, and the design and construction of pylon, beam and cable of single-pylon partial cable stayed bridge were analyzed and concluded. The results show that the side-main span ratio is 0.6- 1.0 when the two span arrangements are adopted, and the side-main span ratio is 0.4--0.9 when the muhiplane arrangement is adopted. It is suitable for the span in the range of 35--170 m. When the beam keeps the same height, the height of the beam and main span ratio is 1/40--1/25% when the beam uses variable cross-section form, the height of beam in supported sections is 1/35-- 1/20 of the length of main span, and the height of beam in abatement sections is 1/1.8--1/1.5 of the length of supported sections. Height-span ratio of the pylon is mainly applied to 1/5-- 1/2. The cable plane could be divided in single cable plane, double cable plane and three cable plane~ The cable spacing in the beam ordinary is 4--6 m, and the cable spacing in the tower is related to self-weight and cable plane shape.

关 键 词：桥梁工程 独塔 部分斜拉桥 跨径布置 结构设计 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]