海口城市地下综合管廊BIM技术的应用实践

结合海口城市地下综合管廊第一批试点项目中的BIM技术应用实践,从软件与协同应用、模型深度、交付成果等方面展开了介绍,重点阐述了相关模型的建立、可视化、管廊防水方案的模拟、管廊施工工期的模拟、管廊施工的进度报告等,该项目在BIM技术的运用中强调了设计与施工环节的衔接,提高了效率,也是推进设计向施工深化的很好尝试.因此,该项目的应用成果具有一定的代表性,可为BIM设计向施工环节延伸提供很好的示范,所得结果也可为今后的类似工程提供技术参考.     

BIM技术在铁路客运站房的运用实践

以海南西环线铁路东方站为例,分析BIM技术在铁路客运站整个建筑全生命周期的运用实践。从可视化、协调性和模拟性三个方面探讨BIM技术相对于传统二维设计的优势。总结在铁路客运站设计阶段运用BIM技术的经验,并为BIM技术在后期的施工和运营维护阶段的运用提出了方向。     

BIM技术在建筑装修工程中的应用研究

本文研究了装修工程设计与施工全过程BIM管理模式,在设计阶段根据客户需求,基于BIM技术建立装修初步设计和水暖电设计方案,实现客户可视化展现与交流,及模型调整与方案修正。在施工阶段,应用BIM三维模型,实现施工模拟,消除装修施工的管线与建筑结构碰撞问题。     

BIM技术在工程建设节约成本方面的应用

以长沙太平洋人寿南方基地建设项目为例,阐述了BIM技术在绿色施工、建设标准化、建筑后期运营维护等建筑全生命周期的运用,分析了利用BIM技术进行碰撞检查、施工进度模拟后所带来的经济效益,展示了BIM技术在节约成本方面的应用.BIM技术在长沙太平洋人寿南方基地建设项目项目的应用,节约了建筑成本、缩短了施工进度、确保了施工安全、提高了工程质量.     

BIM技术在洋县汉江特大桥施工管理中的应用

近年来,随着信息技术的发展,运用BIM技术已成为铁路桥梁工程领域未来发展的潮流与趋势,并日益成为施工企业转型升级的重要手段之一。为更好的实现工程项目精细化管理,基于洋县汉江特大桥项目,建立了与施工现场数据相吻合的桥梁BIM精细化模型、符合施工工艺工法的模型库。通过数字信息化模拟仿真技术,进行了基于BIM技术在洋县汉江特大桥节段梁拼装施工、连续梁悬灌转体施工、预应力管道安装施工及预应力钢束张拉施工的仿真模拟,从而更好地指导桥梁复杂工艺的施工。并基于C#技术,进行了洋县汉江特大桥BIM施工管理的二次开发,提高项目参与方的协同工作效率。实践证明,通过BIM技术的应用,大大提高了铁路桥梁各参与方的协同工作效率,并取得了良好的管理效果和经济效益。     

BIM辅助施工管理的模式及流程

BIM(building information modeling)技术为工程建设行业注入了新的活力,但行业对BIM的应用集中于项目规划设计阶段,较少应用于施工阶段且相关研究主要关注BIM技术的实现,较少考虑BIM实施的管理和组织过程。为了有效拓展BIM在施工阶段的应用,该文通过分析传统工程管理流程存在的问题以及BIM辅助施工管理的优势和价值,提出了施工阶段的BIM应用模式,构建了由模拟BIM系统和实时BIM系统组成的施工管理平台架构,并设计了2个系统的实施流程。结果表明:该文可为施工阶段BIM的深化应用提供参考,也能够为施工阶段的综合信息化管理提供思路。     

BIM技术在城市地下空间开发中的应用

针对BIM技术在中国建筑行业的应用和发展状况,从规划、设计、施工、维护管理4个方面探讨了BIM技术在中国城市地下空间开发中的应用,得出以下结论:运用BIM技术不仅可以从宏观和微观两方面论证规划方案的可行性,而且可以对比分析设计阶段不同的设计方案并进行精细深化设计、碰撞检测等工作,为后期的高质量施工提供保障;运用BIM技术还可以在施工前期进行施工方案预演、综合调整等工作,有效提高施工效率,节约成本。利用该技术所集成的建筑全生命周期所有信息,有助于建筑后期的维护管理工作,也能够为突发情况下的应急处理提供良好的应急措施。此外,初步分析了城市地下空间开发利用中运用BIM技术应当注意的信息安全问题。     

BIM技术在城市桥梁工程中的应用：现状与前景

BIM(建筑信息模型)技术蓬勃发展,它具有高度的信息化、集成化、可视化等特征,使得BIM技术在工程领域得到迅速的推广应用。但目前BIM技术在桥梁工程领域的应用仍不成熟,且在很大程度上局限于设计、施工阶段。本文以城市桥梁为例,阐述了BIM技术在桥梁工程设计、施工阶段的应用现状和已有成果。对城市桥梁在运营维护阶段所面临的问题和困难进行阐述,介绍了城市桥梁管理系统的发展进程。最后展望了新兴技术条件下城市桥梁管理系统信息化、智能化转型的前景。即,促进BIM技术在桥梁工程建养一体化平台的应用,为城市桥梁管理者提供了一个新的桥梁运营维护思路。     

港口码头施工模拟BIM技术应用研究

本文分析了港口码头施工技术现状,以实际工程Ashdod港口码头项目板桩施工作为案例,应用BIM技术对港口码头板桩施工过程进行了研究,建立了板桩构件模型,对施工过程进行了BIM模拟。根据施工组织设计与现场施工工况,编制了板桩构件BIM代码,为港口码头可视化施工及工期规划提供了技术支持,研究成果在配合板桩施工及BIM信息管理应用中效果显著,具有重要的推广价值。     

基于BIM的地铁车站深化设计应用研究

依托长沙轨道交通4号线工程,开展基于BIM技术的汉王陵公园站深化设计研究,探索工程应用的实际效果.研究发现,建立达到施工精度要求的BIM模型是开展基于BIM技术的地铁车站深化设计的前提,Revit、Navisworks、Fuzor及Lumion等系列BIM平台集成软件为地铁车站深化设计提供了有力的技术支撑.通过应用BIM技术,促进了项目参与人员可视化协同设计,推动了精确工程信息数据资源的创建,促进了项目精准设计、精益建造与精细管理的有效融合.     

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.     

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.     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

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

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.