概念加固思想及工程应用

提出了工程结构加固中新的思路——概念加固。概念加固是运用人的思维和判断，从宏观上决定工程加固中的基本问题、基本概念及基本原则，并阐述了基于“概念加固”思想指导下的整体预应力加固技术，介绍了在工程加固中的应用实例。     

用碳纤维加固桥梁的现场试验研究

既有桥梁由于各种原因需要加固，而碳纤维加固结构技术由于其施工便 捷，且又不影响原结构的外观，加固效果又优于传统的结构加固技术，因此正被广泛应用于桥梁加固中，对某桥梁加固前后的现场动静载试验数据进行了分析研究，发现桥梁经过碳纤维加固后，其承载能力与延性均得到了很大的增强。其成果比试验室中模型试验结论更具研究推广价值。     

碳纤维布在砼柱中的施工技术及工艺

碳纤维布补强砼结构是一种新兴的科技含量较高甜加固手段，主要应用于补强混凝土梁与板，它具有不破坏原结构，施工方法简便，加固后能使结构满足设计要求，虽然这种加固方法其材料价格相对较高，但与其他加固方法相比，可节约施工费用，并且加固完成后，结构在使用过程中无需再投入维护费用，使用寿命长，这种加固方法具有长远的综合效益。本文重点介绍碳纤维布加固砼柱的施工工艺及施工验收。     

公路桥梁体外预应力加固设计与施工方法研究

提出了体外预应力加固体系的设计理论与构造要求，结合实际加固工程进行静载试验，比较加固前后桥梁在试验荷载作用下实际工作状态，测定结构的强度，刚度及抗裂性能，从而确认其加固效果，总结出体外索加固桥的具体施工步骤以及关键技术，可应用于工程设计。     

碳纤维布和玻璃纤维布加固柱的特性分析

通过实验对比，分析了玻璃纤维布加固柱和碳纤维布加固柱的受压性能。实验结果表明，经纤维布包裹加固后，柱的承载力和极限压应变均有提高，提高的量值随纤维布约束能力的增加而增大；碳纤维布的加固效果优于玻璃纤维布的加固效果，但在承载力提高相同的条件下，采用碳纤维布加固所需的费用高，性价比相对较低。     

浅谈外包柱施工的措施与实例

随着建筑业的发展，加固工程越来越多。目前加固方面的规范主要有《混凝土加固技术规范》CECS25：90。对于上部结构荷载增加而对柱子的加固方法有：加大截面加固法、外包钢加固法、粘钢加固法等，其中加大柱子截面法俗称外包柱施工，该方法施工方便且承载力提高效果明显。     

粘贴钢板在旧桥加固中的应用

介绍了粘贴钢板法加固桥梁的原理以及加固特点，阐述了粘贴钢板法的加固设计方法和影响粘贴钢板加固强度的各种因素，并对粘贴钢板法的加固施工技术进行了详细论述，以供类似工程参考。     

混凝土结构加固技术研究及应用综述

混凝土结构加固业已成为我国建筑业中一个新的发展热点，与之相应的混凝土结构加固技术也成为结构工程中重点研究的领域之一．笔者讨论混凝土加固结构的受力特点，介绍混凝土结构加固常用方法的特点及应用范围，重点介绍体外粘贴FRP这一新的结构加固技术在我国的研究及应用状况，分析我国混凝土结构加固技术有待解决的问题．与其他加固技术相比，体外粘贴FRP加固技术有很多优点，是一项具有广阔应用前景的混凝土结构加固技术．     

对混凝土结构工程加固施工方案的思考

随着钢筋混凝土结构加固理论研究方面的不断深入，各种新型建筑材料不断涌现，建筑物改造与病害处理应用越来越广泛，其加固施工及加固方案的制定尤为重要，对于需要加固的构筑物，应根据构筑物的不同情况制定不同的加固方案.     

某中学教学楼抗震加固中粘钢加固技术探讨

结构的粘钢加固是一种民用建筑工程的加固新技术。目前，钢板贴合加固技术已经是一项成熟的加固技术，在房屋、道路、桥梁及电力、水利工程等混凝土结构维护改造加固材料及施工中已有所应用，其中以民用建筑行业应用的最为广泛。本文结合工程实例，对粘钢加固技术的施工进行探讨。     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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