The deformation and stresses of soil by pipe-jacking are calculated with 2d and 3d finite element methods.
通过二维和三维有限元计算了顶管施工产生的土体变形和土体应力。
The deformation of ground surface during the construction of curved pipe-jacking is studied with 3d finite element methods.
通过建立三维有限元模型，研究了曲线顶管施工过程中地表的变形规律。
According to an engineering case, the paper introduces the design and key points of construction of pipe-jacking techniques.
文中结合实际工程，介绍了人工挖土顶管方法的设计与施工及关键施工技术要点。
As a trenchless technology for laying pipeline, pipe-jacking tunnel technology is increasingly displaying the enormous superiority in pipeline reconstruction.
微型顶管隧道作为一种非开挖地下管线敷设技术，在城市地下管线改造中日益显示出巨大的优越性。
In order to control the subsidence of the interval tunnel and guarantee the safety of operation strictly, pipe-jacking is used as pre-support for the first time.
为了严格控制既有环线区间隧道的沉降，确保环线地铁运营安全，首次采用了顶管作超前预支护。
According to the complication of pipe-jacking crossing the Yellow River some techniques such as twin-pipe joined without hinging, relay ring, slurry damper are applied.
针对济南市引黄供水穿黄顶管的复杂工况，详细介绍了以二段无铰式工具管为头部的顶管施工工艺及中继环、泥浆减阻等先进技术的使用。
In order to ensure the safety of the Yangtze levee, safety monitoring during pipe jacking and afterwards is necessary.
为了确保大堤安全，必须开展顶管施工期间和工后的长江大堤安全监测。
In construction of pipe jacking, the wall of working shaft and soil body behind the sidewall offers enormous supporting force to a lift.
在顶管施工中，千斤顶的支座需要巨大的反力支持，这些反力是由工作井的侧壁以及壁后土体提供的。
It is shown that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
分析表明，水平平行顶管施工时由于中间区域受到双重扰动，会产生较大的地面沉降。
The construction of Pipe Jacking is beset with difficulty due to the large propulsive force for several years.
大口径长距离顶管施工顶进推力过大是困扰顶管施工多年的技术难题。
It shows that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
研究结果表明，水平平行顶管施工时中间区域受到双重扰动，产生的地面沉降较大。
Because of the advantages and application fields, curved pipe jacking technology is paid more and more attention.
曲线顶管施工技术以其特有的优势和应用领域，越来越受到重视。
From the technology of reducing friction slurry and the relay jacks, the jacking force of long pipe jacking has been analyzed.
从触变泥浆减摩技术和中继接力技术两个方面对超长距离顶管施工中的顶推力进行了研究。
Glass fibre reinforced plastic mortar pipe(Centrifugal casting process)is introduced to be as jacking pipe material used in the design and construction of one jack engineering project.
玻璃纤维增强塑料夹砂管（离心浇铸工艺）作为顶管管材运用于顶管工程中的设计、施工介绍。
This paper introduces the epicyclic reduction arrangement applied in cutting drive mechanism in pipe jacking, analyses the construction and characteristics of epicyclic reduction arrangement.
介绍顶管掘进机截割传动装置所采用的行星齿轮减速器，论述行星齿轮减速器的结构特点。
Polyethylene wall pipe with winding structure used in pipe jacking technology without slot is a specific material which can be applied to pipe jacking without slot on the ground.
不开槽顶管埋设技术聚乙烯缠绕结构壁管材专用料是一种可适用于地面不开槽，进行顶管施工的管材原料的专用料。
With the environment getting more attention, the use of not-dig pipe jacking technology has become more extensive.
随着环境问题越来越受到重视，作为非开挖的顶管施工技术应用也越来越广泛。
The neighborhood buried pipelines will be damaged by movements of soil around the pipes induced by pipe jacking.
顶管施工引起的管道周围土体移动会对相邻地下管线造成危害。
The interaction of two level parallel pipe jacking is analyzed; and the calculation of lateral disturbance scope is advanced.
对水平平行双线顶管之间的相互作用进行了分析，提出了横向扰动区范围的计算公式。
At present the large diameter slurry pipe jacking is the preferred construction method in project of urban water supply and drainage pipe and electric power pipe.
目前，大直径泥水平衡顶管掘进已成为城市给排水水管、电力管线工程等首选的施工方法。
With a practical project, authors state application status of the pipe jacking method in construction of contact tunnels of a subway shield zone tunnel.
从工程实例出发介绍顶管法在地铁盾构区间隧道联络通道施工中的应用情况。
Both theoretical analyses and field observations have shown that pipe jacking in such a kind of soft soil ground as in Shanghai area, movements of soils around the pipes is of three-dimension.
理论分析和现场实测都显示，在类似于上海等地的软土地层中顶管施工，顶管周围土的运动问题是三维的。
This paper introduced the pipe jacking technique in the water drainage pipe jacking project for Beijing North West No. 4 Ring Road-University Road Flyover. It has achieved good results.
介绍北京市西北四环路-学院路立交桥排水顶管工程施工技术措施和工艺，施工取得了良好效果。
When steel pipe is vertically jacking from underground, its counteraction requires more on the strengthening of bearing support.
在地下向上进行竖向钢管顶升，其顶升反力对支座加强提出了较高的要求，出土、止水也是难题。
By making use of the semi analytical element method, the three dimensional soil movements problem of pipe jacking is transfered to a one dimensional numerical calculation.
利用半解析单元法将顶管施工中三维土运动问题转化成一维数值计算。
Pipe jacking construction disturbs soil inevitably, which would results in soil deformation and does harm to its surroundings.
顶管施工对土体扰动是不可避免的，土体变形是土体受扰动的结果，而土体变形则会对周围环境造成危害。
Field data were analyzed. It showed that axis force increased along with pipe jacking at the very start, and it maintained stated basically when jacking to a certain distance.
实测数据分析表明，管节开始顶进时轴力随顶进距离增大而增大，顶进到一定距离后，基本维持在一定范围内。
Finally, several control measures are proposed to avoid failure for long-distance linear and curvilinear pipe jacking construction.
提出了长距离直线和曲线顶管施工防止管道失稳的控制措施。
The pipe-soil interaction in the traditional curved pipe jacking is analyzed. The soil counterforce distribution model and load bearing model for the heading and the latter pipelines are set up.
分析了传统曲线顶管施工中管土之间的相互作用，建立了首节管道和后续管节的受力模型及土体反力分布模式。
The pipe-soil interaction in the traditional curved pipe jacking is analyzed. The soil counterforce distribution model and load bearing model for the heading and the latter pipelines are set up.
分析了传统曲线顶管施工中管土之间的相互作用，建立了首节管道和后续管节的受力模型及土体反力分布模式。
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