水利工程施工监理技术的创新与发展

在我国项目施工的过程中,施工监理是保证施工建设质量的重要因素,因此,在水利工程施工建设的过程中,监理人员为了保证最终的施工质量可以达到最初的设计要求,应当根据实际水利工程施工情况来合理的制定监理技术,但是在实际水利工程施工监理过程中还存在着诸多的问题,因此,监理人员应当加强对水利工程施工监理技术的创新,从而促进水利工程施工可以有序的进行。     

监理控制钻孔灌注桩质量的探讨

介绍了在钻孔灌注桩整个质量形成过程中,监理应该从施工前期质量的监理控制、施工中的质量监理控制和施工后期质量的监理控制三个方面进行监控才能保证钻孔灌注桩的施工质量,对钻孔灌注桩施工控制有一定的实际指导意义.     

土工合成材料施工质量监理探讨

结合工程实践,从施工监理的角度阐述土工合成材料施工质量监理工作内容,提出土工合成材料施工质量监理要点,为保证公路工程的土工合成材料施工质量提供可靠依据。     

犍为船闸工程施工监理方法探讨

作为大型工程项目,船闸工程施工比其他水运工程项目更加复杂,施工技术要求较高,更容易出现问题,所以施工监理工作非常重要。船闸施工监理对保证工程的质量、进度和安全等方面具有重要意义,能够有效地排除施工中的各种隐患,确保船闸施工项目顺利、高效地实施。总结船闸施工监理实践经验,从工程质量、进度、安全等控制方面提出施工监理方案,可供类似工程参考。     

如何实现高速公路施工监理质量、速度、投资控制的统一

针对一些施工监理的实际过程,结合我国实施高速公路施工监理制度,总结了高速公路施工监理中如何实现质量控制、速度控制、投资控制的统一,以供参考。     

公路隧道的施工特点和监理方法浅析

分析了隧道施工的特点及其对施工监理人员的要求,指出监理人员在隧道施工中必须检查的重点工程。同时指出,监理工作必须要了解＂新奥法＂原理并能在施工中灵活运用,并且要重视有实践经验的施工队伍的建议。     

浅议监理会议制度

监理会议是项目监理开展工作的一种重要手段,是体现项目监理部整体工作能力的平台,通过监理会议及时总结施工情况、对工程施工中出现的问题及时进行协调和处理,保证工程顺利施工.监理会议包括第一次工地会议、监理例会、监理专题会议及监理协调会议.     

浅谈长阿公路摇金沟隧道施工监理

结合长阿公路摇金沟隧道工程监理实践,介绍了摇金沟隧道的特点,在进行隧道监理时的监理机构及人员配备、监理实施细则等进行阐述,着重论述了隧道在施工前、施工中及完工后、变更、计量等各施工环节入手以及如何进行现场质量监理的具体方法,以确保隧道工程施工质量。     

里下河地区灾后应急治理工程建设监理蔽端分析

里下河地区灾后应急治理工程建设监理主要是施工过程监理,监理单位接受业主委托后,工程施工即将开工,监理人员对环境和设计图纸并不十分了解,对工程并未深入的掌握和熟悉,需要边干边熟悉情况。而灾后应急治理工程,战线较长且分散,施工环境较差,对施工带来的不利因素很多,对工程监理工作的开展确实有一定的难度。在施工期间,监理人员就如何搞好工程监理,克服不同单位和自身不足等各种因素的影响,提出了较高的要求。     

浅谈船舶建造的监理办法

船舶建造的施工工艺复杂,建造周期长,投资大,因此,对其进行有效施工监理就显得特别重要。但长期以来,船舶的施工监理还没有较全面的方式、方法可参考。通过对横门出海航道整治工程起吊七吨沿海航标工作船的建造施工监理,介绍该船舶的施工监理情况,与同行们互相交流学习。     

An analysis of trends in passenger and freight transport energy consumption in India

This primary objective of this paper is to examine the causes for the change in energy consumption in the transport sector in India. The pattern of energy consumption and their causes for change are benchmarked against select countries. A mathematical model that decomposes changes in energy consumption to various factors has been used. The changes in the energy consumption are attributed to growth in transport volume, structural change or modal shift, and energy intensity. The analysis is conducted for passenger and freight transport separately. Results indicate that the growth in transport volume has been the main cause for increase in energy consumption for both passenger and freight transport in India despite the decline in energy intensity of various transport modes. Though not surprising for a growing economy like India, this poses a challenge for the future. Currently, India is a low carbon economy.     

我国沿海商品车滚装物流发展分析

分析我国沿海商品车滚装物流发展的外部条件,对我国沿海港口商品车滚装物流量进行预测,阐述我国沿海滚装港口、航线、运力的资源条件,针对我国沿海发展商品车滚装物流存在的问题提出了建议。     

基于几何控制法的箱梁短线预制拼装技术

基于几何控制法的箱梁短线预制拼装技术,在我国尚处于起步阶段.文章重点讲述预应力连续梁短线法施工控制技术的计算思路,其中包括箱梁预拱度计算、制造线形计算、安装线形计算.对今后连续梁短线法施工技术预制拼装技术法施工控制,提供了可供参考的计算方法.     

基于TOPSIS的惠州荃湾港区石化码头泊位扩建规模优选

TOPSIS(逼近理想解的排序方法)是求解多属性决策问题的一个典型方法。根据此法,提出了惠州荃湾港区石化码头泊位扩建规模方案及TOPSIS优选模型,得到模型的正、负理想解。根据相似度定义了各方案到正理想解和负理想解的距离,得出各方案的相对贴近度,从而得到该港区石化码头泊位扩建规模最佳方案;为该港区石化码头建设规模决策提供理论参考。     

北方地区沉箱重力式码头冬季施工成套技术

冬季施工成套技术解决了冬季大型沉箱预制、溜放、大规模混凝土现浇施工、以及冬季潜水整平作业所面临的技术难题。文章中概要阐述了寒冷地区沉箱重力式码头冬季施工关键技术措施及其在秦皇岛港煤四期扩容和煤五期码头施工中的应用。     

国、内外港口船舶岸电技术的发展和应用现状

目前,在国家日益重视节能减排和环境保护的大背景下,使用岸上电源系统为靠港船舶供电作为解决我国港口环境污染问题的全新尝试已有成功的范例,并在一些港口开展试点工作。重点介绍国内、外船舶岸电技术的发展和已建连云港港客滚码头59#泊位船舶岸电系统的配置情况,并对天津港现有泊位实施岸电技术改造后能够取得的经济效益和环境效益进行预测评估。根据国内港口的现实情况,提出全面实施港口船舶岸电系统存在的主要问题和相关意见与建议。     

On stress concentration factors for tubular Y- and T-Joints in frame structures

This paper is written as a result of some years experience with fatigue analysis of offshore jacket structures where the connections are made as tubular joints. The hot spot stresses at the tubular joints in such analysis are normally derived based on parametric equations for stress concentration factors. These stress concentration factors are normally related to the axial force in the brace. It is observed that the hot spot stresses at the crown positions of the tubular joint in some cases are significantly affected by the local loading on the chord and the bending moment in the chord. In order to use the existing formulae in these cases some engineering effort is required to derive correct hot spot stress. This work can be avoided by using the nominal stress in the chord as the basis for calculating the hot spot stress at the crown position instead of using the axial force in the brace as basis for the analysis. This also extends the validity of the equations for stress concentration factors for T- and Y- joints in design standards. The proposed modification makes it also simpler to include the effect of joint flexibility in a proper way. The basis for a proposed revision of the equations for stress concentration factors for these joints is presented in this paper. It is considered that this modification leads to minor changes of the computer code, but that it will save analysis work for engineers and reduce the possibility of calculating incorrect fatigue lives in tubular frame structures.     

Using the SKAGEX dataset for evaluation of ocean model skills

Numerical ocean models are now being applied in numerous oceanographic studies. However, the qualities of the model results are often uncertain and there is a great need for standards and procedures for evaluation of the skills of numerical general circulation models. In this paper measurements from repeated hydrographical sections across Skagerrak taken in 1990, the SKAGEX dataset, are used to evaluate the skills of two σ-coordinate ocean models and to study the sensitivity of these models to model parameters. A methodology for quantification of model skills based on observations from repeated hydrographical sections in general is suggested. Area averages of absolute differences are for Skagerrak completely dominated by the discrepancies in the upper few meters of the ocean and may not be used to assess models' abilities to reproduce the fields in the larger and deeper part of the ocean. Therefore, discrepancies between average values in time from the observed fields and time averaged values from model outputs are related to the natural variability of the fields. The numbers produced with the suggested measure are relative numbers that will be specific for each section and for each series of observation. Ideally we would therefore like to see the measures computed for a number of sections for various models and choices of model parameters in order to assess model skills. The value of the SKAGEX dataset as a tool for model improvements is demonstrated. Evidence to support the importance of applying non-oscillatory, gradient preserving advection schemes in areas with sharp density fronts is given. The method is used to identify that the forcing/initial values/boundary values for the temperature field are inferior to the corresponding values for the salinity field. With the present coarse resolution, 11 layers in the vertical, it is shown that it is far from obvious that the quality of the model results improve when replacing simple Richardson number formulations for vertical mixing processes with higher order turbulence closure in the Skagerrak area.     

大深度载人潜水器浮力块的结构设计

依据大深度载人潜水器浮力块的使用条件及主要技术性能指标,提出了浮力块的质量和质心坐标的计算方法、布置和分块原则、强度校核标准,并通过对浮力块密度测试和水压试验,测得了浮力块的主要物理性能参数。上述研究结果为浮力块的结构设计、编制我国大深度载人潜水器入级和建造规范中浮力块的结构设计、以及研制同类大深度水下载人/无人潜水器(HOV,ROV,AUV)提供了依据。     

修船质量管理体系的改进

文章针对中船广州船坞3年来修船质量管理体系运行存在的问题，在文件编制方面针对修船产品特点和生产条件的差异进行完善，在人力资源管理方面落实对年轻管理人员和新施工人员的基本培训，在过程控制方面推行自主质量管理，在测量考核方面加大了约束和激励的力度，在外来工管理方面采取了一系列稳定技术骨干队伍的措施，初步取得了一定的效果，同时提出了今后持续改进的方向。