支护结构

The theory and the implementation of the genetic algorithms are discussed in detail. The question on how to choose the crossover probability, the mutation probability, the scale of population and the numbers of the generation is discussed. Then, the mathematics model of the optimal design is established. Exerting the finite element of elastic base beam and using FORTRAN to write the GAFORTRAN program. The program includes the common genetic algorithms and the modified genetic algorithms.

详细介绍了遗传算法的理论和实现技术，探讨了交叉概率、变异概率、群体规模、进化代数等变量的选取问题，建立起了基于遗传算法的深基坑支护结构设计的优化模型，结合弹性地基梁有限元法，利用FORTRAN语言编制了GAFORTRAN优化程序，程序中包括普通遗传算法和改进遗传算法。

The work presented herein can be used as the reference in the soil nailing design and the engineering applications.

本文工作可为土钉支护结构的设计和工程应用提供参考。

This structure of soil nailing wall of this kind was successfully used in one foundation pit in Beijing.

通过北京某实际工程的成功应用，对钢管小桩复合土钉墙支护结构的应用加以总结。

The stress and displacement of each other lay can be clearly showed in the digital graph through computations of different ways in the model, avoiding formerly reading results through nephogram.

分别对围岩和支护结构进行了分析，摒弃了以往通过云图看结果的模式，而从模型的不同分析路径入手，对于各个层面的围岩应力及位移都有清楚的数值曲线表示。

This paper studies on the ground settlement due to the deformation of the supporting structure. The normal distribution and parabola function are used to fit the curve of ground settlement and the estimating formula is deduced gradually.

本文主要对由于支护结构变位而引起的地表沉降进行了相关研究，利用正态分布及抛物线函数拟合了地表沉降曲线，并推导出沉降的估算公式。

Finally, the effect of seepage is discussed, which can significantly influence the earth pressure in some cases.

分析了地下水的渗流对作用在支护结构上的土压力的影响，研究表明渗流作用对土压力的影响是明显的。

In order to study the stability of stratified rock slope in Zhu-Cheng road and its reinforcement method, the potential deformation and slipping mechanism of slope were analyzed using insitu-investigation and stereographic projection analysis method. The numerical calculation model for stratified rock slope was founded with UDEC software. The deformation of rock mass was analyzed in the excavation procedure, and the long-short compound bolt reinforcement structure was proposed according to the deformation failure mode of stratified rock slope.

摘 要：为了研究竹城公路层状岩质边坡的稳定性及防治措施，通过现场调查和赤平投影分析边坡潜在变形滑动机理；利用UDEC软件建立层状边坡数值计算模型，分析开挖过程中岩土体的变形情况；根据变形破坏模式提出层状岩质边坡的长短锚杆交替复合支护结构。

The influence of site surroundings to the form of strutting structure should be considered.

支护结构具体形式应考虑基坑周边环境和场地空间条件的影响。

The method in the article can be a try to solve problems about the touch of wall rock and support structures.

对于围岩和支护结构共同作用下界面的接触也是一种尝试。

The distortion and destroy form of coved laneway in complicated stress condition are diversity,and it is relative with rock character,crustal stress and shoring structure.

中文摘要：拱形巷道在复杂应力条件下的变形以及破坏形式呈多样化，与围岩性质、地应力和支护结构相关。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。