仰拱

针对TBM施工隧道仰拱预制块的特殊结构，采用围岩-结构模式，进行了模拟施工动态的受力影响计算分析。

According to the special structure of precast block of inverted arch for TBM construction tunnel , the dynamic construction state is modeled by FEM with surrounding rock - structure calculating model .

隧道仰拱对列车振动衰减影响的研究

Effects of Inverted Arch of Tunnels on the Attenuation of Traffic Vibration

秦岭隧道仰拱TBM浆体技术的研究

Study on the Technology of TBM Casting Paste Under Invert in Qinling Tunnel

TBM施工隧道仰拱预制块的受力分析

Mechanic Analysis of Invert Prefabricate in TBM Construction Tunnel

运用计算软件ANSYS，采用围岩&结构模式，对TBM施工隧道仰拱预制块进行模拟动态施工的受力计算研究。

A simulation of dynamic forces acting on invert prefabricates in TBM construction tunnel is made with surrounding rock-structure model by using ANSYS software .

最后，用试验数据验证计算的正确性，其结论可供TBM施工隧道仰拱预制块的优化设计参考。

And the calculation result is verified with the experimental data . So the conclusions can be for reference for the similar TBM construction tunnel engineering .

本文通过使用ANSYS有限元软件建立实体模型，对无仰拱和有仰拱两种工况下整体道床应力进行了计算和分析，得出整体道床的受力特点。

In this paper , the stress of the track slab with and without inverted arch is calculated and analyzed using a solid model established by Finite Element software-ANSYS , and the mechanics characteristic of the track slab is educed .

对适合隧道地质条件和TBM施工的施工方法、工艺参数、围岩分级标准、支护参数、圆形衬砌结构及仰拱预制块设计进行研究，TBM掘进最高速度达531m·月-1。

The construction means , the characteristics , the grade standard of surrounding rock , the characteristics of supporting structure and the design of circular liner structure and prefabricated arch components adapted to TBM are studied and the machine bored per month 531 m.

隧道仰拱施工防干扰作业平台的设计及应用

Design and application of interference-free working platform for tunnel invert construction

隧洞混凝土衬砌先边顶拱后仰拱的施工方案

Study on construction scheme for concrete lining of tunnel construction

秦岭Ⅰ线隧道仰拱预制块施工技术

Construction Technology of Prefabricated Invert Segment for Qinling No.1 Tunnel

隧道仰拱的力学行为研究

Study on the Mechanic Behaviour of Tunnel Invert

仰拱型式对隧道结构的影响

Influence of Invert Pattern on Tunnel Structure

关于临时仰拱形式问题的探讨

Discussion on the shape of temporary inverts

秦岭Ⅰ线隧道进口仰拱预制块生产工艺的确定

Production Technology of Prefabricated Invert Segment for the Entrance Section of Qinling No. 1 Tunnel

大跨公路隧道仰拱优化设计研究

A Study of the Optimized Design of the Convert of the Large - span Highway Tunnel

其中防干扰仰拱作业桥已于2003年取得国家专利。

Through which the face upward work bridge which is anti-interfere get the national patent in 2003.5 .

仰拱处承受了最大负弯矩，这两处是容易发生破坏的部位。

Invert the maximum negative moment at the bear , both of which are prone to damage the site .

仰拱必须超前施作，尽早形成闭合结构。

The inverted arch shall be constructed in advance so as to form enclosed structure as soon as possible .

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。

The field test is made about the tunnel invert that combined with precast reinforced concrete slab and dry concrete .

为控制隧道结构变形过大这一问题，施工中根据经验采用锁脚锚管和仰拱注浆。

Countermeasures including setting locking anchor pipes and grouting in inverted arch have been taken in field to control the settlement .

仰拱应紧跟下台阶施作，及时闭合构成稳固的支护体系。

The inverted arch shall be provided closely following the lower bench and be closed in time to form a stable support system .

每开挖一部均及时施作初期支护、中隔壁及临时仰拱。

The temporary preliminary support , center diaphragm and temporary inverted arch shall be provided in time after the excavation of each part .

结果表明：突水位置发生在仰拱或墙脚位置时，对衬砌结构的受力影响显著；

The results show that mechanical behavior of lining structure change evidently when suddenly effluent water happen at inverted arch or foot of wall .

研究结果表明：列车振动荷载影响最大的位置为仰拱，边墙次之，拱顶较小。

The results show that : the train vibration load has the greatest impact on invert arch and followed by side wall and vault .

结合陕西省宁棋公路棋盘关隧道仰拱的施工实例，从技术、安全、质量、工期、效益5个方面进行综合分析比较，提出了在隧道内架设便桥的技术方案，取得了良好的效果。

Combined with the construction practice , from five aspects , the paper analyzed the technical plan of erecting auxiliary bridge in the tunnel for reference .

为此，自行设计制造成本低、结构简单、移动快捷、轻便的片式仰拱栈桥在隧道施工现场愈来愈普遍。

To this end , sheet-type invert trestle of low cost , simple structure , convenient mobility and light weight is becoming increasingly popular at tunnelling .

隧道片式仰拱栈桥动载作用下强度及刚度校核装载机管片式散热器流动与传热特性数值分析

Strength and Rigidity Checking of Sheet-type Invert Trestle of Tunnel under Dynamic Load Numerical simulation study on wheel loader tube-fin radiator air flow and heat transfer character

物理模型实验方法分析了隧道仰拱处不同典型深度（4组模型）开挖对隧道围岩稳定性的影响。

Physical model of experimental methods the different typical depth ( 4 models ) excavation at the inverted arch of the tunnel impacting the stability of the tune .

加荷载开挖后，最大主应力σ1为竖向应力，出现于拱顶或者仰拱部位，该部位应该重点加强支护。

Hou-loading after excavation , the maximum principal stress is vertical stress , generally appear in the vault or invert parts of the site should focus on strengthening support .