Abstract
The passenger transportation special line is by the passenger
transportation primarily fast railroad. At present in our country, the rail road rank except I, II, III level outside increased \passenger transportation special line\350km/h railroad as the passenger transportation special line, the curve radius generally above 2200m. This design is the Xiamen - Shenzhen railway transportation special line crag foot tunnel (single track electrification) the preliminary design, the speed of the design is 250km/h. The course is DK112+744 - DK114+225.
This design mainly contains: choosing the entrance and outlet position and the portal form; plane and longitudinal section design , tectonics design; structural design , calculate for the fifth level surrounding rock and check out the result; design for organizing the construction and calculation of volume.
Choosing the entrance, outlet position and the portal form mainly based
on topographic condition and considering waterproof and drainage requirement, abidance the principle of “the earlier entrance, the late outlet”.Choose a reasonable portal form based on the amount of earth pressure.
Plane and longitudinal section design, tectonics design mainly contains designing the plane alignment, grade form and gradient. Plane and longitudinal section design include straight lines and curve lines(R=7000m，L=1426.22m，T=714.63m，l=220m)，the grade form is unidirectional, and gradient is 3.5‰， At the same time, this paper make a detailed declaration on determination of building line.
The structure design and calculate for tunnel lining is the focal point. According to the requirement of specification, define the form of cross section and each size. Calculate loads on the tunnel and convert it into
concentrated force. Make out the internal force and diagram by ANSYS, draw the internal force and deformation diagram.
The design for organizing the construction mainly contains the choosing of job practice, measures of job practice, construction schedule program, and calculation of volume, and so on.
Keywords: passenger dedicated railway line; tunnel; One-lane; preliminary design
目 录
第1章 绪 论 ....................................................... 1 1.1 设计依据与原则 ................................................. 1
1.1.1 设计依据 .................................................. 1 1.1.2 主要设计原则 .............................................. 1 1.2 工程地质及水文地质 ............................................. 2
1.2.1 概况 ..................................................... 2 1.2.2 地层岩性 ................................................. 2 1.2.3 地质构造及地震动参数 ..................................... 3 1.2.4 水文地质条件 ............................................. 3 1.2.5 环境工程地质 .............................................. 3 1.2.6 隧道工程地质条件 ......................................... 4 第2章 隧道平、纵断面设计 ......................................... 7 2.1 隧道平面设计 ................................................... 7 2.2 隧道纵断面设计 ................................................. 7
2.2.1 隧道内纵坡形式确定 ........................................ 7 2.2.2 隧道内纵坡坡率的确定 ...................................... 7 2.3 隧道净空的确定 ................................................ 8
2.3.1 限界 ...................................................... 8 第3章 隧道洞口位置和洞门的确定 ................................... 11 3.1 隧道洞口位置确定的要求： ..................................... 11 3.2 隧道洞口位置的比选： ......................................... 11
3.2.1 方案的拟定 ............................................... 11 3.2.2 方案的比选： ............................................ 12 3.3 隧道洞门的设计 .............................................. 13
3.3.1 隧道洞门的设计原则: ..................................... 13 3.3.2 隧道洞门形式的选择： .................................... 13 3.3.3 洞门构造及基础设置应遵循下列规定： ...................... 14 第4章 V级围岩衬砌结构计算及检算 ................................. 15 4.1 衬砌形式确定 ................................................. 15 4.2 衬砌设计规定 ................................................. 15 4.3 复合式衬砌 .................................................... 15 4.4 模型理想化 .................................................... 17
4.4.1 支护结构的理想化 ......................................... 17 4.4.2 围岩的理想化 ............................................. 17 4.4.3 外荷载理想化——等效节点荷载 ............................. 17 4.4.4单元和节点编号，边界条件 ................................. 18 4.5 荷载计算及二次衬砌计算 ........................................ 18
4.5.1 深浅埋段的确定 ........................................... 18 4.5.2 V级围岩衬砌结构计算： ................................... 18 第5章 其他洞内附属设施设计 ....................................... 23 5.1 防排水设计 .................................................... 23
5.1.1 一般规定 ................................................. 23 5.1.2 防水 ..................................................... 24 5.1.3 排水 ..................................................... 24 5.1.4 洞口防排水 ............................................... 25 5.2 运营通风和照明 ............................................... 25
5.2.1 运营通风 ................................................. 25 5.2.2 照明 ..................................................... 25 5.3 其它设施 ...................................................... 26
5.3.1消防设施 ................................................. 26 第6章 施工组织设计 ............................................... 26 6.1 概述 .......................................................... 26
6.1.1 编制原则 ................................................. 26 6.1.2 施工原则 ................................................. 27 6.2 施工方法的选择 ................................................ 28 6.3 各种施工工艺 .................................................. 30
6.3.1 砂浆锚杆施工工艺和方法 .................................. 30 6.3.2湿喷砼施工工艺和方法 ..................................... 30 6.3.3 隧道防排水板施工工艺和方法 .............................. 31 6.4 二次衬砌施工工艺和方法 ........................................ 32
6.4.1 施工工艺 ................................................. 32 6.4.2 施工方法 ................................................. 33 6.5 施工进度计划 ................................................ 35
6.5.1 施工进度计划概述 ........................................ 35 6.5.2 施工进度计划的编制原则和内容 ............................ 36 第7章 工程量的计算 ........................................... 38 7.1 进口洞口及洞门工程量计算 ..................................... 38
7.1.1 挖方量计算 .............................................. 38 7.1.1.2 圬工量计算 ............................................ 39 7.2 出口洞口及洞门工程量计算 ..................................... 40
7.2.1 挖方量计算 .............................................. 40 7.2.2 圬工量计算 ............................................... 41 设计总结 .......................................................... 43 致谢 .............................................................. 44 参 考 文 献 ....................................................... 45 附录1 ANSYS 各节点坐标应力表 ..................................... 46 附录2 ANSYS 计算隧道二次衬砌内力表 ............................... 49
第1章 绪 论
1.1 设计依据与原则
1.1.1 设计依据
1． 由设计院提供的厦门－深圳铁路客运专线岩脚隧道平、纵断面和横断面图； 2． 《铁路隧道设计规范》
行车速度：250km/h；
隧道内设整体道床、钢轨60kg/m。
1.1.2 主要设计原则
1.1.2.1 设计原则
1 在地形、地貌、地质、气象、社会人文和环境等调查的基础上，综合比选隧道各轴线方案的走向、平纵线形、洞口位置等，提出推荐方案。
2 地质条件很差时，特长隧道的位置应控制路线走向，以避开不良地质地段；长隧道的位置亦应尽可能避开不良地质地段，并与路线走向综合考虑；中、短隧道可服从路线走向。
3 根据铁路等级和设计速度确建筑限界。在满足隧道功能和结构受力良好的前提下，确定经济合理的断面内轮廓。
4 隧道内外平、纵线形应协调，以满足行车的安全、舒适要求。
5 根据隧道长度、交通量及其构成、交通方向以及环保要求等，选择合理的通风方式，确定通风、照明、交通监控等机电设施的设置规模。必要时特长隧道应作防灾专项设计。
6 应结合铁路等级、隧道长度、施工方法、工期和营运要求，对隧道内外防排
铁路隧道毕业设计 - 图文
