Firstly , the author has researches on basic engineering properties of soil layers in tunneling construction , especially in the relationship between the changes of matric suction ( negative pore water pressure ) and soil strength data . the results have obviously shown on the control of soil strength to matric suction in the different suction 首先对地铁隧道施工中环境土层基本工程性质进行了研究，着重研究了基质吸力(负孔隙水压力)的变化和土的强度参数的关系，研究结果表明：在不同的吸力状态下，土的强度都不同，土的强度明显地受吸力控制。
With the development of the manufacturing industry and the need of the refrigerated containers in the world market , research on the thermal engineering property experiment system for refrigerated container has more instruction . the research works in this paper focus mainly on the following aspects : the design characteristics , main structures and preliminary operation situation of refrigeration unit control system are described 冷藏集装箱属运输制冷装置，是“冷藏链”重要的一环，是最灵活和最有发展前途的“门对门”运输工具，近年来已发展成为国际贸易中一项新型的重要运输方式，也将是21世纪重要的冷藏运输工具。
Cemented soil has been extensively used to ground treatment , however , engineering experiences suggest that low strength and large deformation has restricted its further application in the engineering . to improve engineering properties , many additives have been added to cemented soil 水泥土工程应用广泛，然而工程实践表明，水泥土强度不够高、形成的复合地基后期变形较大等问题制约了水泥土的进一步应用，选择适宜的外掺剂改善水泥土性能是解决这些问题的重要途径。
Therefore , tension tests of geogrids , pull - out tests between geogrids and expansive soils or sands , the related geotechical tests of soil " s properties , and model tests of soft ground improvement , were carried out for obtaining the engineering properties , quality index of geogrids , interaction parameters of friction characteristics between reinforcement and soils , and the affecting degree of factors influencing the lateral displacement ( pile ) rate during the construction of embankment filling with ( residual ) settlement considered restrictively 本文以国内外大量研究成果为基础，集中力量开展控制变形的特种土作填料的物理改良技术和加筋垫层在控制沉降软基处理的作用研究，其核心是筋土界面相互作用关系。为此，进行了为确定土工格栅工程特性和寻找质量控制指标的拉伸试验、筋土界面设计参数合理获取的拉拔试验及其配套土工试验、软基上路堤填筑过程中坡脚的侧向位移及其速率的影响因素的室内模拟试验。
A systematic study is conducted on engineering behaviors of residual soil , failure mechanism of residual soil slope and mechanism of natural flow slides triggered by rainstorm in jiang jia drainage area . to investigate engineering properties of disturbed soils , a series of tests , including grain - size analyses , permeability tests , direct shear tests and dynamic iriaxial lest is performed on specimens 本文在总结热带坡残积土地区暴雨滑坡转化成泥石流的研究现状和进展的基础上，对云南东川市蒋家沟地区坡残积土的工程特性、暴雨条件下斜坡土体的破坏机理、暴雨滑坡转化成泥石流的形成机理和形成过程进行了较为系统的研究。
The concrete should have good and durable engineering property under the ideal condition , but due to the environmental or working reasons , the surface is easily corroded , and even cracked to expedite the neutralization by the co2 and speed the corrosion on steels , and finally to cause the durability problem 摘要在理想状态下，混凝土应具有良好且耐久的工程性质，然受到外在环境或施工等因素影响，混凝土表面易受侵蚀而破坏，甚至于当表面发生龟裂后，二氧化碳使得中性化的现象加速，造成钢筋的腐蚀速度增快，易引起混凝土耐久性的问题。
On systematic analysis of engineering property of the aeolian sand , we choose cement stabilized aeolian sand , cement stabilized mixture of aeolian sand and soil , lime - fly ash stabilized aeolian sand , lime stabilized mixture of aeolian sand and soil and lime - cement stabilized mixture of aeolian sand and soil as object of research . on the base of the determination and analysis of temperature contraction property , aridity resistance property and strength of the stabilized aeolian sand mixture , this paper mainly analyses influential factors and inherent law of property about the stabilized aeolian sand mixture , and provides scientific foundation for the using of aeolian sand as paving material 本文在系统分析风积沙工程特性的前提下，以水泥稳定风积沙、水泥稳定混合沙土、石灰稳定混合沙土、石灰粉煤灰稳定风积沙和水泥石灰稳定混合沙土作为底基层材料研究对象，在对其温缩、干缩以及强度和模量等性能指标的测试、分析的基础上，研究分析了这些稳定风积沙混合料各性能的影响因素和内在规律，为风积沙用作沙漠地区公路路面材料提供了科学依据。
Five factors of effecting specify the bearing capacity of drilled grouting pile ( engineering properties of soil , structural dimension of pile , stiffness of pile , time ) have been concluded through introducing the transmission of load mechanism of drilled grouting pile . at the same time , the effecting parameter has been collected . the paper build the ann model in predicting ultimate bearing capacity of drilled grouting pile and discuss in detail the extraction of inputting nodes information when quoting the fundamental principle of ann model and introducing research process of the improved bnn 本文简要介绍了桩基承载力的研究现状并指出将神经网络引入桩基工程的意义，从介绍单桩荷载传递机理出发总结了影响单桩极限承载力的五种因素(桩周土的工程性质、桩身结构尺寸、桩的刚度、时间以及施工工艺)并提取了相应的参数；引用神经网络基本原理，详细介绍了改进bp神经网络的研究过程，从而建立了预测钻孔灌注桩极限承载力的神经网络模型；并详细讨论了本模型的神经网络输入结点信息的提取，在工程实例的基础上进行了数值计算。
Analyzing quantitatively the structural features of soft soil from marine accumulation around vacuum preloading by means of x - ray , scanning electronic microscope and computer image processing technique , together with the experiment and comparing the changes of soft soil in microstructure and engineering properties , the authors studied the consolidation mechanism of vacuum preloading 摘要借助x -射线、扫描电镜及计算机图像处理等技术，对海积软土真空预压加固前后的结构特征进行定量分析，并结合室内试验，对比研究土体微观结构和工程性质的变化，探讨真空预压加固的机理。
