MIDAS120跨径下承式钢管混凝土系杆拱桥设计(2)

For the construction method of the bridge construction of arch ribs is assembled method, full framing the upper structure construction. Suitable for flat the quay construction. But the downside is arch rib docking precision is difficult to control in the air, the arch axis control has certain difficulty, segmentation, the more its construction period and quality control, the greater the difficulty, the construction cost is higher, to adopt new technology and new technology in the construction. Perfusion steel pipe concrete pumping jack-up method.

Summarizes the study achievement of the university through the design, and a brief outlook for the future development. In this paper, in the last attached CAD drawings for the size of the whole structure, vertical section, steel beam layout shape for further instructions and added.

1 绪论 1

1.1 设计的目的与要求 2

1.2 钢管混凝土拱桥的特点 2

1.3 钢管混凝土拱桥的优势 3

1.4 梁拱组合的特点 3

2 设计依据 4

2.1 设计依据 4

2.2 技术标准 4

2.3 地质资料 4

2.4 主要材料 5

2.5 采用规范 5

3 桥型方案比选 6

3.1 构思宗旨 6

3.2 比选标准 6

3.3 比选方案 6

3.4 方案点评 7

3.5 方案确定 8

4 总体布置及主要尺寸 9

4.1 结构总体布置拟定 9

4.2 截面尺寸拟定 11

4.2.1 拱肋 11

4.2.2 吊杆 13

4.2.3 横梁 13

4.2.4 系梁 15

5 建立模型 16

5.1 作用 16

5.1.1 永久作用 16

5.1.2 汽车荷载 16

5.1.3 温度作用 16

5.2 计算方法概述 17

5.3 模型建立 17

5.3.1 建立坐标系 18

5.3.3 结构边界条件 19

5.4 拱桥冲击系数计算 19

6 整体静力分析 20

6.1 内力计算 20

6.1.1 恒载内力计算 20

5.1.2 活载内力计算 23

6.1.3 温度荷载内力计算 26

6.2 作用组合 30

6.2.1 承载能力极限状态组合 30

6.2.2 正常使用极限状态组合 31

6.2.3 主桥在组合作用下的内力图 32

7 配筋计算及预应力布置 36

7.1 预应力钢束估算 MIDAS120跨径下承式钢管混凝土系杆拱桥设计(2):http://www.751com.cn/gongcheng/lunwen_44815.html