论文部分内容阅读
1简介某建桥工地拟建一座悬索桥,采用三塔四跨悬索桥、三塔两跨斜拉桥和拱桥三个方案。其效果如图1所示。相关参数介绍:主缆横向布置两根,中心距为36m,主跨矢跨比采用1/9。主缆载边塔靠边跨侧处最大坡度30.5度。吊索间距15m。主塔中心到最近吊索的间距为20m。梁段采用钢-混凝土结合梁,梁高3.0m,由钢横梁和混凝土桥面板组成。其中钢主梁高2.423m(中心线处),横梁高2.735m(跨中),混凝土桥面板厚为20cm,桥面铺装0.065m。主梁标准节段长15m,横向设两片主梁,中心距31.2m。吊索
1 Introduction A bridge site proposed to build a suspension bridge, the use of three towers and four span suspension bridge, three towers and two span cable-stayed bridge and arch bridge three programs. The effect is shown in Figure 1. Relevant parameters: Two main cables are arranged horizontally, the center distance is 36m, the main span-span ratio is 1/9. The maximum slope of 30.5 degrees at the side of the main cable-carrying side tower. Sling spacing 15m. The distance between the center of the main tower and the nearest sling is 20m. Beam section with steel - concrete beams, beam height 3.0m, composed of steel beams and concrete bridge deck. Among them, the height of the steel main beam is 2.423m (at the center line) and the height of the transverse beam is 2.735m (middle span). The concrete slab thickness is 20cm and the deck pavement is 0.065m. The standard section of the main girder is 15m long and two girders are provided transversely with a center distance of 31.2m. Slings