支护结构

Stress, bending moment of the supporting structure during different excavation stages.

的应力及弯矩，在基坑支护结构设计中具有重要应用价值。

Based on the reliability theory, the stability of braced excavation is analyzed in detail.

本文又应用可靠度理论对支护结构的稳定性作出了详细的分析。

The design concept and feasibility condition of the scheme is introduced, and the pressure on the claybank is discussed, A practical design method using reduced "m" value for structure computation and Rankine passive earth pressure for claybank calculation is developed, which is proved to be feasible and safe by practice.

着重介绍方案的设计思路、成立条件，并对作用在平衡土体上的土压力大小进行讨论，并提出了按折减m值进行支护结构计算、按朗肯被动土压力进行平衡土体验算的实用设计方法。工程实践表明，采用中心岛法具有突出的综合效益，所提设计方法安全可行。

And the excavation of tunnels and underground engineering which continuously changes in time and space is a dynamic process. Therefore, research on the structural stability of country rock and support is meaningful and of practical significance to highway tunnel excavation.

隧道和地下工程的开挖是一个在时间和空间上不断变化的动态过程，因此对围岩与支护结构稳定性问题的研究具有一定的理论及实际意义。

Considering different factors, for example ,the variation of the length and the separation of the soil nails, and the diametric of the mixing piles on the strut frame made of composed soil nails is how to affect the stability and deformation of the strut frame made of composed soil nails.

考虑不同的参数，比如土钉长度变化、土钉间距变化、搅拌桩桩径变化等对复合土钉支护结构稳定性以及变形的影响。

According to the research on the displacement in Y direction, shear stress, plastic zone and vector of displacement of tunnel without lining after excavation of the tunnel, the characteristics and failure mechanism of tunnel are summarized in the state of the interface with one side is strong and the other is weak.

通过对开挖后的无衬砌隧道进行竖向位移、剪切应力、塑性区及围岩达到屈服状态时的位移矢量分析研究，总结出结构面两侧岩体上强下弱或下弱上强的状况下，围岩的力学特性和破坏模式；对隧道的选址、支护结构的设计和施工具有广泛的借鉴意义与指导作用。

By adopting the calculating analysis method of elastic-plastic three-dimensional FEM numeric simulation, this paper makes a simulation analysis on the structure stability of the shallow cover and unsymmetrically loaded parts in Tongyoushan tunnel, mainly simulates the effects caused by different construction orders on surroundings and supporting structure stability, and it centers on the analysis on the weak part, the midwall in the lining of the connecting-arch tunnel.

采用弹塑性三维有限元数值模拟计算分析的方法，对桐油山隧道浅埋、偏压地段结构稳定性进行了模拟分析，主要模拟了不同施工顺序对围岩及支护结构稳定性的影响，重点对连拱隧道整体衬砌中的薄弱环节－中墙进行了分析。

With plain strain finite element method,the characteristic of double-row pile of excavation of foundation pit in soil clay is studied.

双排桩支护结构是基坑围护结构的一种形式，但目前的分析方法无法考虑其与土体的共同作用。

Based on the characteristics of staged-construction of foundation pit and the interaction of diaphragm walls-bracing-soil, a FEM method is provided in this paper to analyze the moment and deformation of the diaphragm walls in whole process of foundation construction, taking consideration of all the possible construction stages from the beginning of excavation to the end of foundation, and the influence of cap beam, pre-load of steel bracing, removal and change of bracing, and the corresponding computer program is composed.

本文首先基于杆系有限元计算原理、基坑工程分工况施工以及围护体、支撑、土体协同工作的特点，提出了一种基坑支护结构全过程内力及变形分析方法，编制了相应的计算程序。该法可考虑第一阶段挖土至±0.000结构楼层施工结束期间的所有工况，可考虑压顶梁对围护体变形的制约作用，以及钢支撑预加轴力、拆撑、换撑等因素的影响。

In the rock-soil engineering, the soil pressure caused by slope excavation is very complicate .It not only withes pays to the reinforced structure displacement, stiffness and geological condition, but also related with the excavation method.

岩土工程中，边坡因开挖坡脚岩土体所产生的作用于支挡结构上的土压力情况复杂，它不仅与支护结构位移、刚度和岩土体地质条件相关，而且还在很大程度上取决于施工方法。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。