2) crown settlement monitoring
隧道拱顶下沉监测
1.
To ensure the safety of tunnel construction, the establishment of standard benchmarks ,stations and monitoring targets is introduced, the principle of the traditional crown settlement monitoring method with levels and total stations is explained, mainly the application of automatic tunnel deformation monitoring systems is discussed.
为了保障隧道的安全施工,及时掌握隧道整体的稳定情况,需要进行隧道拱顶下沉监测。
3) double-arch tunnel
连拱隧道
1.
Deformation monitoring and numerical simulation of shallowly-buried long-span double-arch tunnel;
浅埋大跨连拱隧道的变形监控及数值模拟
2.
Coupling analysis of surrounding rocks in double-arch tunnel by FE and BP neural networks;
双连拱隧道围岩变形有限元与BP神经网络耦合分析
3.
Excavation scheme and construction sequence of double-arch tunnel under worse geological conditions;
较差地质连拱隧道开挖方案及施工顺序的探索
4) continuous arch tunnel
连拱隧道
1.
On the construction waterproof and drain of partition in continuous arch tunnel;
浅谈连拱隧道中隔墙的施工防排水
2.
The construction technology of accumulated body at the entrance section of Fuxi continuous arch tunnel;
富溪连拱隧道洞口段堆积体施工技术
3.
Composite construction technology of Guixingdi double continuous arch tunnel;
龟型地双连拱隧道综合施工技术
5) multi-arch tunnel
连拱隧道
1.
Study on treatment schemes of an expressway multi-arch tunnel middle wall;
高速公路连拱隧道中墙治理方案研究
2.
Construction of multi-arch tunnel at the V-grade surrounding rock with pilot method;
连拱隧道Ⅴ级围岩导洞施工实践
3.
Numerical analysis and treatment of a collapsed middle drift for shallow multi-arch tunnel under unsymmetrical pressure;
浅埋偏压连拱隧道中导洞坍方数值分析与处治
6) tunnel invert
隧道仰拱
1.
The field test is made about the tunnel invert that combined with precast reinforced concrete slab and dry concrete.
结果表明,由本文设计的隧道仰拱组合结构,能够增强隧道的施工安全和加快施工进度。
2.
In order to increase the construction speed to utilize the non-rail system effectively, a new construction technology of fast construction of tunnel invert using precast-slab has been proposed.
结合金洞隧道采用无轨运输地段的施工,设想在隧道仰拱(铺底)施工时,铺筑坍落度很小的干硬性混凝土,然后将混凝土预制板逐块铺在该混凝土面上。
补充资料：极限拱顶高度试验
极限拱顶高度试验
limit dome height test
j ixian gongding gaodu shiyan极限拱顶高度试验(limit dome height test) 一种评估金属薄板成形性的试验方法，是杯突试验的改进。用以确定金属薄板在各种应变状态下的极限应变值。简称LDH试验。由于成形极限图的精度、重复性和稳定性较差，而一般的双向拉伸试验也只能提供等双向拉伸应变状态的试验参数，因此发展了极限拱顶高度试验。 试验方法类似于双向拉伸试验。工具有半球形凸模、凹模和带压边筋的压边圈。试验时，用球头凸模将金属板压入凹模。试样被压边圈压紧，以便使试样边缘的金属不能向凹模孔内流动。试验前在不同宽度的试样表面印制上网格。试验时在板料发生失稳或断裂的瞬间停机，并测量试徉的横向应变(短轴应变)。:和拱顶高度H，在以。:和H/凸模半径为横纵坐标轴的坐标系中标出不同宽度试样的试验点，把试验点相连即得图示的LDH曲线。LDH曲线与成形极限曲线形状相似，但要比制作成形极限曲线简便，并且在润滑条件相同的情况下，试验结果的重复性和稳定性都大大优于成形极限曲线。LDH曲线在坐标系中的位置越高，说明薄板在不同应变状态下的极限拉伸应变量越大，因此薄板的成形性能越好。 0 .74厂一一一一一一一门—~—一一一-门 0 .70卜一公幸、二乡」{ 哪。“L了场】卜洛」}/月 罗0 .66卜七‘暇.丫，1/} 升“’一{t少翅弓人{/} 旧}、{/1} 泛。62卜、}空_} o‘’8…圣翌eses二… 一10一5 0 5 10 E2 LDH曲线 (唐获)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条