水中缺陷桩基处理技术总结

在施工颍河特大桥主墩桩基灌注时混凝土输送泵出现故障造成浇注中断,桩基检测发现缺陷。采用旋喷压浆技术对缺陷桩基进行了处理,处理后检测合格。对旋喷压浆处理桩基缺陷的全过程进行了介绍,并对施工中出现的技术问题进行了分析。     

钻孔灌注桩施工质量控制

就钻孔灌注桩施工的质量通病原因对桩基施工过程中施工工艺的质量控制进行了分析,并对桩基施工过程中出现的问题以及施工后缺陷桩问题,提出了具体的处理措施。     

大直径水下混凝土桩基施工质量控制

文章就影响水下混凝土桩基施工质量的若干因素进行了分析,并提出了其对应的施工质量控制.对指导水下混凝土桩基的施工有一定的借鉴意义.     

桩基施工过程中常见的质量问题和分析

近些年来,随着城市建设的不断发展,城市建筑规模不断扩大。我们对于建筑的质量予以了高度的重视,而桩基工程质量往往关系到整个建筑的质量。因此分析桩基施工过程中常见的质量问题,对于桩基施工工作的运行具有指导性的意义。本文从桩基施工的特点出发,引出施工过程中常见的质量问题,并对其进行深入的分析,对于施工改进提出了相关的建议和看法。     

浅析静压预应力管桩施工

本文以某桩基工程为例,浅述预应力管桩的静压法施工过程及桩基检测,并对静压施工过程中遇到的问题及处理方法进行了分析。     

桥梁桩基复合地层施工中的振动测试分析

本文着力于阐述桥梁桩基复合地层施工中振动测试的必要性以及复合地层桥梁桩基施工振动特性分析,结合某高速公路桥梁桩基施工的具体情况,对桥梁桩基冲击钻孔施工过程产生的振动进行了试验分析,确保施工顺利,为周围建构筑物的破坏评估提供可靠的数据。     

桩基础施工中钢筋笼上浮问题分析与预防措施

在混凝土灌注桩基础施工中，发生钢筋笼上浮是较常见的问题，其对建筑工程桩基施工质量的影响是显著的，本文对桩基施工中钢筋笼上浮问题进行了分析，并提出了相应的预防措施。     

软土地基中桩基施工时的挤压力影响

通过分析实测资料 ,对桩基施工过程中对土的挤压力进行了研究 .讨论了桩端处土压力随桩体贯入深度的变化及其最大影响半径 ,并与理论解进行了对比 .对施工流程的影响进行了探讨 .提出群桩施工过程中的土压力有其最大值和稳定值 ,并从理论上作了说明 .结合孔隙水压力的资料 ,可为桩基施工的影响作进一步的有效应力分析 .     

岩土工程桩基施工与勘察分析

为进一步提高岩土工程勘察深度,针对当前岩土工程桩基施工与勘察中的潜在问题进行分析,并在此基础上,确定岩土工程桩基施工中的要点包括:预制桩施工要点、钻孔灌注施工和断桩施工.为了进一步提高桩基施工质量,针对其勘察方法进行设计研究.通过勘察手段及技术选择、实现现场勘察校验检测,提出一种全新的勘察方法.通过对比分析证明,新的勘...     

公路桥梁桩基工程技术要点

针对公路桥梁实施桩基工程,一方面可以有效地提升公路桥梁桩基的稳定性,另一方面可延长公路的使用寿命。鉴于此,该文结合具体的公路桥梁工程案例,首先阐述了现阶段公路桥梁桩基施工过程中常见的各类问题,其次提出了对应的施工技术控制措施,并对相关的桩基工程施工技术进行了分析和研究。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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