关于地基加基础固处理的几点思考

地基基础是建筑物的重要组成部分,没有坚实的地基基础,即使是再好的建筑物也会出现问题。     

建筑物基础加固技术探索

现今建筑加固技术已广泛应用于建筑工程中,本文通过一接层基础加固设计方案的选择及施工方法的选择对基础加固技术做一些简要的分析.     

基础局部切除工程中基础的加固处理

某厂房内部新增设备的基础与原有基础部分重叠.为了实施对原有基础局部切除,分析比较了多种可行方案,最终采用基底板桩卸荷和外包基础加强处理的方法.设计计算时,对传统的朗金土压力和库仑土压力理论进行了合理的简化.施工过程中,严格监控沉降和位移,确保了施工安全,加固取得了良好的效果.     

重叠板设计在基础加固中的应用

对一栋阳台 生倾斜的住宅楼，采用改变传力途径法进行加固设计，将阳台下增砌墙体的荷载传给已旗子完毕的基础底板，根据计算，在原底板上另浇一钢混板构成重叠板，新旧板之间设隔离层，经过实际工程应用，加固效果良好。     

镍闪速炉缓冷厂房柱基础加固方法

镍冶炼火法厂房的基础,经常受高温和酸水的侵害,基础一旦开裂或腐蚀,失去本身的强度和耐久性后,整个建筑物的安全性就会遭到破坏,甚至会造成人身、设备的伤害。结合工程实例,阐述了镍闪速炉缓冷厂房钢筋混凝土独立基础开裂而对基础进行加固处理的技术问题,分析了基础开裂的原因,介绍了基础加固的设计方案,提出了施工时的注意事项,指出了该加固方法加固工期短、加固质量高、综合效益好;在基础内侧增设通风道和采取耐热混凝土隔热是一个很好的设计理念,可供设计人员和工程技术人员在今后的同类设计和基础加固处理时参考,也可以广泛推广。     

深圳罗湖商业城工程废旧基础的改造及利用

深圳市罗湖商业城工程成功的利用及改造废旧基础,取得很好的经济效益,节约工程费用约350万元,缩短工期约三个月。 一、概述: 随着高层建筑的高速发展,人们对高层建筑的使用功能、平面布置、立面要求日新月异,特别是变更开发商思路更是常见。很多已完成基础施工的工程也全面返工,报废的基础工程及返工凿除报废基础的费用约占工程总投资百分之十,造成很大浪费,同时也影响工期数月。深圳这样的工程例子可以举出不少。     

施工电梯基础的特殊施工方法

在高层建筑施工中,由于地下室、裙房的面积往往较大,施工电梯基础往往不能直接设置在地基上,给施工电梯的使用带来了困难。在西安申煤能源大厦科研楼工程中将施工电梯基础设置在地下室顶板上,并采取了加固地下室顶板的做法,解决了这一问题,本文着重介绍该电梯基础的加固方法．     

高层建筑基础加固实例分析

本工程为较典型基础加固实例。基于结构计算程序并采用加大截面的加固方法。对未达到设计要求的基础混凝土进行了加固改造。     

截桩纠偏与基础托换加固实例分析

以舟山市定海某住宅楼收偏加固为实例，阐述了错杆静压桩基础托换加固技术和截桩纠偏结合基底掏土纠偏技术对水泥搅拌桩复合地基基础沉降不均匀房屋的综合治理，在居民不搬迁的情况下，把住宅楼倾斜扶正、使住宅楼的基础得到加固，达到了加固基础和纠偏房屋的目的。该项目的成功实施对舟山地区以后的房屋纠偏加固具有现实的指导意义。     

Pre-Stressed Rope Reinforced Anti-Sliding Pile

Pre-stressed rope reinforced anti-sliding pile is a composite anti-sliding structure. It is made up of pre-stressed rope and general anti-sliding pile. It can bring traditional anti-sliding pile＇s retaining performance into full play, and to treat with landslide fast and economically. The difference between them is that the pre-stressed rope will transfix the whole anti- sliding pile through a prearranged pipe in this structure. The working mechanics, the design method and economic benefit are studied. The results show that the pre-stressed rope reinforced anti-sliding pile can treat with the small and middle landslides or high slopes well and possess the notable advantage of technology and economic.     

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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