摘要;本次设计围绕着贵阳轻轨2号线森龙区间右线暗挖隧道进行，森林公园站～龙洞堡站区间位于贵阳市南明区，线路出森林公园站后，采用高架桥跨越鱼梁河，之后进入山体，采用暗挖隧道下穿居民区及在建龙水路，直至龙洞堡站。暗挖隧道区间为：YCK42+380～YCK43+051。5，隧道区间里程长671。5m，区间暗挖段采用台阶法施工。隧道埋深8。8m，所处土层以杂填土为主，衬砌采用复合式衬砌，断面形式为马蹄型断面。二次衬砌选用C35防水混凝土和HRB400钢筋，受力钢筋保护层厚度为30mm。本次设计主要内容为隧道结构主体设计与主要尺寸拟定，并进行详细的荷载计算、内力计算与隧道结构受力计算，同时要对衬砌结构所采用钢筋进行配置，且进行裂缝宽度检算并需要绘制8张设计相关图纸。通过以上设计，经验算后，确定本次设计合理，方案可行。72606

毕业论文关键词： 隧道；衬砌；配筋；暗挖法

Structural design of the left line tunnel in Guiyang light rail line 2

Abstract: This design is around the Guiyang Light Rail Line 2 Senlong section of the right line under the tunnel, the Forest Park Station ~ Longdongbao station interval is located in Guiyang City Nanming District, the line out of the Forest Park Station, the use of viaduct across the fish beam river, After entering the mountain, using the tunnel under the tunnel and in the construction of Long waterway, until the Longdong Fort station。 The tunneling interval is: YCK42 + 380 ~ YCK43 + 051。5, the tunnel interval is 671。5m, and the interval excavation is constructed by step method。 Tunnel buried depth of 8。8m, where the soil layer to miscellaneous fill mainly lining the use of composite lining, cross-section for the horseshoe-type section。 The main structure and its associated important components, the safety level for the first level, the other components of the security level of two, support the security level of not less than two。 Secondary lining selection of C35 waterproof concrete and HRB400 steel, reinforced steel protective layer thickness of 30mm。 The main contents of this design are the main design and main dimensions of the tunnel structure, and the detailed load calculation, internal force calculation and the calculation of the tunnel structure force are carried out。 At the same time, the steel bars used in the lining structure are arranged, and eight design drawings The Through the above design, experience, to determine the design is reasonable, the program feasible。

KeyWords: The tunnel; Lining; Reinforcement; Dark digging method

目录

1 绪论 1

1。1 课题的目的和意义 1

1。2 国内外研究现状与水平 1

1。3 发展趋势 1

1。4 文献综述 2

2 概述 2

2。1 设计依据 2

2。2 设计范围 3

2。3。1 设计原则 3

2。3。2 设计标准 3

2。3。3 结构耐久性要求 4

3 地质概况 5

3。1 气象、水文 5

3。2 地形地貌 5

3。3 地层岩性 6

3。3。1 第四系覆盖层 6

3。3。2 基岩 6

3。4 地质构造及地震烈度