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1.
米佳  袁屹  候智强  文红  韦永金 《城市燃气》2021,560(10):18-21
介绍了某城乡管网天然气工程赤水河穿越水平定向钻穿越工程情况,结合喀斯特地貌地形特征,探讨了工程中的技术难点,并对施工风险点进行分析,提出解决措施,保证了定向钻穿越顺利施工.为山区定向钻穿越河流施工提供借鉴、参考.  相似文献   

2.
长输煤气管道大开挖穿越河流的施工   总被引:1,自引:2,他引:1  
张宏伟  王泽 《煤气与热力》2003,23(3):164-166
介绍了输气管道以大开挖方式穿越河流的施工,探讨了降水计算和施工注意事项。  相似文献   

3.
吴晓燕 《中华民居》2012,(3):121-122
在城镇燃气管网的建设过程中,经常会碰到燃气管道穿越河流时,因受地形、投资等实际因素限制,已不能采取大开挖或定向钻穿越方式。天然气管道随桥敷设,成为综合考虑最佳的穿越方式  相似文献   

4.
以乌海—银川焦炉煤气输气工程中唐徕渠定向钻穿越为例,介绍了在砂土液化这种比较复杂的地质条件下定向钻穿越的解决方法,同时阐述了定向钻穿越砂层的关键环节,指出定向钻技术作为一项非常重要的非开挖技术具有广泛推广应用的价值。  相似文献   

5.
张彬 《上海煤气》2004,(4):18-20,27
随着燃气行业的迅猛发展,水平定向穿越在燃气排管施工的应用日益广泛。文章结合作者的实际工作经验,对水平定向穿越施工中的主要质量控制点进行探讨,以不断提高燃气行业在水平定向穿越方面的施工水平。  相似文献   

6.
燃气套管检漏报警的分析   总被引:1,自引:1,他引:0  
分析了燃气套管检漏报警中可燃气体种类的确定方法。探讨了穿越公路时安装燃气套管的利弊,提出在燃气管道和套管之间填充聚氨酯的方法。  相似文献   

7.
闫喜彬 《居业》2023,(5):10-12
在北京市燃气管道工程中,水平定向钻穿越施工技术以其特有的优势得到广泛的应用。本文通过介绍水平定向钻穿越施工技术的优势和缺陷,研究在燃气管道工程建设中技术应用的成功和失败案例,探讨水平定向钻穿越施工技术的管理方法。  相似文献   

8.
杨文楠 《门窗》2020,(3):209-209,211
燃气管道施工是当前市政工程及相关工程施工中常见的施工内容,传统的燃气管道施工需要将路面凿开,不仅影响了各项工程的重复建设,增加了燃气管道施工成本,还给人们的日常生活带来了较大的负面影响。而选择使用定向穿越控制技术能够较好的克服传统施工技术存在的弊端。本文从燃气管道定向穿越控制技术原理分析入手,研究了燃气管道定向穿越控制技术要点。  相似文献   

9.
定向钻在燃气管道施工中已越来越多的被采用,这项新技术不仅使工程更加高效、快捷,也大大的节约了工程成本。但在长距离穿越岩石地层山体的铺设燃气管道工程中,仍然存在着很多的疑难问题无法解决,导致穿越的成功率很低。本文从作业场地、泥浆配制、导向轨迹施工、焊口防腐等方面分析了穿越的施工难点,并解析了定向钻在长距离穿越岩石山体铺设高压燃气管道工程中的具体应用。分析结果表明,控制定向穿越施工中的难点和关键工序是提高定向穿越的成功率关键因素。本文为今后此类工程的成功实施提供了技术参考。  相似文献   

10.
钢质燃气管道非开挖穿越河流工程实例   总被引:4,自引:4,他引:0  
结合燃气管道非开挖定向钻穿越河流的工程实例,分析了定向钻技术的决定工程成败的技术要点,总结了穿越设计轨迹、导向孔的钻进和扩孔、拉管等方面的实践经验。  相似文献   

11.
The main roof of the ”Haus der Kulturen der Welt“ in Berlin Which is very well‐known on account of its history and striking structural design – was to be inspected by the author to determine its condition and analysed with regard to the durability of the existing liquid synthetic sealant. The roof structure consists of a biaxial, curved area‐covering structural element with circumferential edge beams of pre‐stressed lightweight concrete. This is the result of the reconstruction between 1984 and 1987 following a partial collapse of the then Berlin Congress Hall in 1980. The very thin roof shell is also made of lightweight concrete and, like the edge beams, has a polyurethane‐based spray‐on seal that was specially developed for this purpose as protection against the ingress of moisture. The reason why this, at the time, novel type of seal was chosen was that it should take into account the fact that the roof design urgently needed some kind of protection against moisture that had to compensate the expected changes shape and crack movements of the roof with no damage. The following article reports on the nature, scope and main results of the analysis of the condition of the roof seal, edge beams and abutments. It will also describe the repair recommendations resulting from the investigations, which form the basis of the execution of work at the present point in time. Apart from presenting the technical principles and special features of the building that have to be taken into account during any repairs, the special features of the execution will also be addressed.  相似文献   

12.
Magnetoelastic Measurement of Prestressing Force in Civil Structures The knowledge of the tensile force of prestressing steel elements and its reliable and non‐destructive determination are of essential importance for the assessment of the structural health condition of prestressed concrete structures and tie‐back systems in terms of structural safety, serviceability and durability. For the evaluation of the prestressing force in steel tension members, the measurement technique presented in this contribution is using the magneto‐elastic effect (ME‐effect) of ferromagnetic materials. This effect describes the reverse‐proportional correlation between the mechanical stress and the magnetic properties of ferromagnetic materials. The cylindrical coiled sensors pushed over the tendon and the measuring device developed and practically optimized at the iBMB/MPA of the TU Braunschweig enable a fast and reliable measurement of the prestressing steel force after an initial calibration. In this contribution first the state of the art of prestress measurement techniques for steel tension members is presented. Afterwards, the ME‐measuring method with the basics and merits of magneto‐elastic prestressing force identification is shown. Further recent research results as well as several building applications will be discussed.  相似文献   

13.
王振贵 《山西建筑》2009,35(18):211-212
从母岩的选料、级配控制、石粉和泥土含量控制三个方面阐述了控制机制砂质量的重要性,并提出了可将隧道混凝土机制砂的石粉含量限值放宽到10%的建议,以促进耐久性混凝土的研究。  相似文献   

14.
指出从组织论角度看项目具有临时性组织的性质,对项目的定义进行了思考,从生产功能、代理机构、代理不确定性事务及项目管理者角度论述了作为临时性组织的项目,以促进对项目的理解和研究。  相似文献   

15.
The new bridge over the river Lahn near Limburg as part of BAB 3, Germany – Competition and Design The effort of the responsible engineers and architects at the Lahntalbrücke Limburg always becomes clear when a new well‐designed bridge structure is needed for the representative Lahn valley. To handle the steadily increasing traffic prestressed concrete structures have gained acceptance for both replacement constructions. Both constructions also convince optically through their simplicity while leaving the creative presence of the cathedral in the valley unchanged.  相似文献   

16.
洪斌 《建筑师》2005,(5):24-31
本文从上海城市文化特点的角度出发,以“生活世界”哲学为基础,对现阶段居住小区设计模式进行了分析。认为“现实生活世界”是上海当代居住小区设计的起点和归宿。也只有这样,才能使新时代的空间形态与生活形态再次整合,创造出新时代的美好人居。  相似文献   

17.
浅谈室内色彩设计的方法   总被引:1,自引:1,他引:0  
提出了室内设计中色彩设计的原则,从色彩在室内设计中的作用、功能及使用者的心理等方面进行了探讨,以提高人们对色彩的认识,充分发挥色彩设计的作用,更好地满足消费者的需求.  相似文献   

18.
郑光复 《新建筑》2010,(1):139-140
针对央视新厦之设计弊端及库氏之流所称邪淫形象,提出改扩建设想及相应建议。从造形立意、结构体系、消防安全等分述改善措施,且将变更业主、转换功能及融资渠道等亦考虑其中。反对以重金建造全球史无前例之奥运纪念碑,申明现有奥运场馆即为最佳纪念实物。主张起诉库氏、矶氏,消除恶劣影响,结合改扩建,进而达致“化辱为荣,补损成益”。  相似文献   

19.
为冲破阻碍当前建筑行业发展的人才匮乏瓶颈,工程管理专业BIM 实践教学亟待改革。对标行业需求,将OBE-CDIO理念引入BIM 实践教学改革以培养与行业需求相匹配的能力。基于OBE 理念确定培养目标,指导BIM 实践教学框架设计,并合理分配所需理论知识点进入各相关理论课程;再以CDIO 理念指导实践教学过程,实现对建模能力、专业分析能力、目标控制能力的培养,满足行业对工程管理专业人才BIM 能力的需求。  相似文献   

20.
Loading of the tunnel sealing system due to fresh concrete pressure This report deals with the loading of the geomembrane during the construction phase of the inner shell of a tunnel. In a systematic parameter analysis at the institute for underground construction at FH Münster the geomembrane and the geotextile were tested under different realistic conditions. Laboratory testing showed a dependence on the seal support surface of the shotcrete and on the characteristics of the geotextile. The deformations of the membranes due to fresh concrete pressure are significantly smaller than the permitted values in the technical regulations. The main results of the investigations are described below.  相似文献   

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