As for hydraulic tunnel lining concrete, thermal stress is one of important factors that cause concrete cracks, due to the heat of hydration of cement in the construction period.
对于水工隧洞衬砌混凝土，在施工期由于水泥水化热作用，温度应力影响显著，是产生混凝土结构裂缝的重要原因之一。
The reason and control of cracks in mechanized lining concrete are also discussed in this paper.
同时，对机械化衬砌混凝土裂缝产生的原因及预防和控制措施进行了探讨。
In the mountain tunnel construction, the secondary lining concrete crack is a certain universal quality problem.
在山岭隧道施工中，二次衬砌混凝土裂缝成为带有一定普遍性的质量问题。
The superposition between fracturing and explosive spalling plays a key role in the multi-layer damages of the lining concrete.
裂隙的扩展和爆裂作用的叠加是衬砌混凝土发生多层剥落的重要原因。
Abstract: the environmental effects are analyzed and the secondary lining concrete durability is studied in the design for Qingdao Metro Line 3.
摘要：分析了青岛地铁3号线所在地域的环境作用，并对地铁二次衬砌混凝土的耐久性进行研究。
The main studying contents of this thesis are optimization-design of the mixture ratio of tunnel's secondary lining concrete and internal structural analysis.
本文的主要研究内容为隧道二次衬砌混凝土配合比优化设计及其结构内力分析。
The authors introduce the technique parameters, construction flow and operation points on construction equipment of mechanized lining concrete on largescale canal.
介绍了大型渠道机械化衬砌用混凝土的技术参数、衬砌机械化施工工艺流程及施工时设备操作使用要点等。
It is concluded that the damage features of the lining concrete are related to fire source, fuel supplying mode, landscape and ventilation condition of the conflagration.
衬砌混凝土的局部损伤特征受火灾发生时的火源、燃料供给、受火区段的地形、通风等因素的影响。
In view of the lining concrete engineering of Xiluodu hydropower station, 3-dimensional finite element method is used to analyze thermal stress sensitivity of the surrounding rock deformation modulus.
针对溪洛渡水电站导流洞衬砌混凝土工程，采用三维有限元法分析了围岩变形模量变化对温度应力影响的敏感性。
Steel lining, concrete lining and surrounding rock can work together to share internal water pressure.
在内水压力下，钢衬、混凝土衬砌和围岩可共同承载。
It is difficult to analyze combined work of underground penstock due to the gap among steel lining, concrete lining and rock.
埋藏式压力钢管设计中，钢衬、混凝土衬圈和围岩之间普遍存在着不连续的缝隙，致使设计计算时难以进行联合受力分析。
It is difficult to analyze combined work of underground penstock due to the gap among steel lining, concrete lining and rock.
埋藏式压力钢管设计中，钢衬、混凝土衬圈和围岩之间普遍存在着不连续的缝隙，致使设计计算时难以进行联合受力分析。
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