锦城花园B1～B4座基坑支护工程设计与施工

锦城花园B1～B4座位于广州市东山区东风东路南侧,占地9800m^2,是由4栋48层楼组成的豪华商住楼,总建筑面积24万m^2,地下3层,地上45层,主体总高度135．2m。本工程基坑深度-11．4m,基坑底平面近似矩形,东西长200m,南北宽49m。     

隧道基坑支护设计与施工

隧道基坑支护与设计是施工的关键,本文结合南海神庙段隧道基坑实体工程的成功实践,详细阐述了该隧道基坑的支护设计与施工,可供同类工程设计施工参考。     

高层建筑基坑支护工程结构设计与施工

本文结合工程实例和工程地质情况,详细介绍了建筑基坑工程支护施工方案的比选和基坑支护工程设计,并在施工技术方案分析的基础上,对其SMW工法连续墙及整个基坑施工技术进行了详细阐述,对施工监测进行了评价。     

基坑支护形式与基坑支护结构选型

本文解释了基坑支护的定义,对常用基坑支护形式进行了介绍,并对基坑支护结构的合理选型做了简要介绍,最后对基坑工程设计施工中要注意的经济、安全问题进行了简要阐述。     

腾昌花园基坑支护施工优化设计

本文介绍了腾昌花园基坑支护原设计和优化设计,优化后支护施工方便,加快施工进度,节约投资。     

深基坑工程设计施工中的现状问题与对策

综述了国内基坑工程设计、施工方面的现状,以及基坑工程支护结构计算方法、破坏模式和变形控制设计原理,总结了易于引发基坑工程事故的各种原因,指出了应在深基坑工程设计、施工中采取的防范措施,并探讨了今后深基坑工程发展中应重点研究和解决的一些问题。     

联合支护方案在武汉某基坑工程中的应用

联合支护方案是根据基坑周边环境条件、地层及开挖深度等的不同,采用多种支护形式联合使用的方案。这种支护方案可以充分发挥各支护类型的优势,使基坑工程设计与施工更加安全、经济、合理,介绍了这种联合支护方案在武汉某基坑工程中的应用。     

软土地区某深基坑工程变形控制措施的有限元分析

软土地区深基坑开挖过程中对周边环境保护的要求越来越高,目前在实际工程设计施工中已有很多基坑加强加固措施用于控制深基坑的变形,但变形控制效果差异较大,且不同工程之间由于支护条件和环境情况差异较大,没有严格的可比性.结合某基坑工程的基坑支护设计、施工、监测情况,对比该基坑不同位置设置被动区土体裙边加固、加厚支护挡墙对基坑工程变形控制的效果,通过采用有限元数值模拟方法对这些基坑工程加强加固措施进行研究分析,得出这些措施能有效控制基坑工程变形量,得出了一些有利于指导深基坑工程设计及施工的建议和结论.     

拉锚式单壁钢板桩在淤泥质土基坑围堰支护中的应用

结合某桥梁土基坑围堰支护实体工程,详细阐述了拉锚式单壁钢板桩围堰支护方案与施工工艺,施工检测及跟踪观测结果表明,该土基坑围堰支护是成功的,可供同类工程设计施工参考。     

土钉支护在宝佳·丽景花园综合楼工程中的应用

简述了在宝佳.丽景花园施工中,应用土钉墙进行基坑支护的过程,包括基坑监测分析以及监测结果的分析处理。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that