WO2021223443A1 - 一种不利地形处接触网临时定位的施工方法 - Google Patents

一种不利地形处接触网临时定位的施工方法 Download PDF

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WO2021223443A1
WO2021223443A1 PCT/CN2020/136576 CN2020136576W WO2021223443A1 WO 2021223443 A1 WO2021223443 A1 WO 2021223443A1 CN 2020136576 W CN2020136576 W CN 2020136576W WO 2021223443 A1 WO2021223443 A1 WO 2021223443A1
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Prior art keywords
cable
catenary
temporary
auxiliary
wire
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PCT/CN2020/136576
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English (en)
French (fr)
Inventor
吴雄
邱晓杰
赵刚
齐孟星
高希斌
张睿
杨睿
吴伟
冀晓莹
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中铁九局集团电务工程有限公司
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Application filed by 中铁九局集团电务工程有限公司 filed Critical 中铁九局集团电务工程有限公司
Priority to PCT/CN2020/136576 priority Critical patent/WO2021223443A1/zh
Priority to JP2022505195A priority patent/JP7202755B2/ja
Priority to CN202080039504.8A priority patent/CN114945491A/zh
Publication of WO2021223443A1 publication Critical patent/WO2021223443A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60MPOWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00Power supply lines for contact with collector on vehicle
    • B60M1/12Trolley lines; Accessories therefor
    • B60M1/28Manufacturing or repairing trolley lines

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  • the invention belongs to the technical field of electrical railway catenary construction, and particularly relates to a construction method for temporary positioning of the catenary at unfavorable terrain.
  • the catenary is a large system, including pillars and foundations, support devices, contact suspensions, grounding and return devices, etc.
  • the contact suspension includes load-bearing cables, contact wires, hanging strings and related parts.
  • the load-bearing cable is connected, and the lower end of the hanging string is connected with the contact line to play the role of suspending the contact line.
  • the positioning of the catenary specifically refers to the positioning of the load-bearing cable and the contact line.
  • the purpose of the present invention is to provide a construction method for temporary positioning of the catenary in unfavorable terrain, so as to solve or alleviate the above-mentioned problems in the prior art.
  • the present invention provides a construction method for temporary positioning of a catenary in unfavorable terrain.
  • the construction method includes the following steps:
  • Step S1 on-site pile delivery and measurement:
  • Step S2 calculation and prefabrication of auxiliary cables:
  • Step S3 calculation and prefabrication of the horizontal cable:
  • Step S4 excavation and backfilling of the pull pit:
  • Step S5 on-site installation and adjustment:
  • Install lower anchor angle steel and temporary stay wire install lower anchor angle steel and temporary stay wire on two pillars during skylight operation time;
  • step S3 Install one end of the horizontal cable: According to the determined installation position of the horizontal cable in step S3, connect one end of the horizontal cable with the auxiliary cable through a suspension clamp;
  • Installation auxiliary cable the two ends of the auxiliary cable are respectively connected with the lower anchor angles installed on the two pillars;
  • the other end of the horizontal cable is connected to the catenary.
  • the connection point between the horizontal cable and the catenary is the positioning point of the horizontal adjustment of the contact network.
  • An adjustment mechanism is provided on the horizontal cable, which can be adjusted through adjustment. The length of the mechanism controls the pull-out value of the lateral adjustment positioning point of the catenary.
  • the present invention adopts auxiliary cables to fix the lateral cables, and fixes the contact net through the lateral cables, which avoids drilling and implanting anchor bolts and installing steel columns on the existing bridge, and avoids damage to the existing bridge;
  • Figure 1 is a schematic diagram of the circuit layout of the present invention
  • Figure 2 is a detailed view of the structure of the auxiliary cable in Figure 1;
  • Figure 3 is a detailed view of the structure of the horizontal cable in Figure 2;
  • Figure 4 is a detailed view of the structure at the connection point of the horizontal cable and the load-bearing cable in Figure 3;
  • Figure 5 is a construction route diagram of the present invention.
  • Figure 6 is the turnout positioning table
  • FIG. 7 is a schematic diagram of the structure of the double lateral stay cable of Embodiment 2.
  • FIG. 8 is a schematic diagram of the structure of the double auxiliary cable of the second embodiment.
  • the present invention provides a construction method for temporary positioning of catenary crossovers or curves on bridges in unfavorable terrain.
  • This embodiment takes the hard beam section as an example, and the specific construction process is as follows:
  • Step S1 on-site pile delivery and measurement:
  • Step S2 calculation and prefabrication of auxiliary cable 6:
  • Sx is the calculated length of the first adjusting bolt 9 in millimeters (mm);
  • St is the vertical distance between the double ear holes of the lower anchor angle steel 7 and the body of the lower anchor angle steel 7, in millimeters (mm).
  • the above L is the hole distance of the double-ear wedge clamp 8 at both ends of the auxiliary cable 6. After calculating the length L plus the turning back distance of 500mm, the wire is broken, and then the other end of the two-ear wedge clamp 8 is prefabricated so that the prefabricated back length is 500mm. Prefabricated double-ear wedge wire clamp 8 at the other end of the auxiliary cable.
  • the lead of the auxiliary cable 6 is made of 70mm 2 aluminum-zinc-plated steel strand.
  • Step S3 calculation and prefabrication of horizontal cable 1:
  • this embodiment since this embodiment takes the rigid beam section as an example for calculation, equal-diameter round pillars are used, and the slope of the pillars is not considered. (The lattice steel pillars are used in the soft span section, and the slope of the pillars and the taper of the pillars need to be considered).
  • the lateral offset of the auxiliary cable 6 is preset to 100 mm (this value can be an empirical estimate).
  • the prefabricated total length of the horizontal cable 1 is the prefabricated total length of the horizontal cable 1:
  • a is the pull-out value of the catenary horizontal adjustment positioning point, which is the preset value (for example: the value is specified in the design drawing, and the suspension at each positioning point has the designed pull-out value, which is used in railway catenary construction Expressed with a lowercase letter a), the unit is millimeter (mm);
  • Cx is the smaller of Cx1 and Cx2;
  • y1 is the distance from the end of the fork WA to the center of the fork 2, in millimeters (mm);
  • x is the vertical distance from WA to the anchor point, in millimeters (mm).
  • the positioning point here is the installation position of the horizontal cable 1 on the auxiliary cable 6, and x is the vertical distance from the fork WA to the positioning point of the installation of the horizontal cable.
  • the method for determining the value of x is as follows:
  • Train tracks generally use steel rails with a rail type of 60Kg/m.
  • turnouts such as the common No. 12 turnout
  • check the turnout positioning table (as shown in Figure 6).
  • the distance between the corresponding positioning point and the turnout WA is 16.5m, that is, x is 16.5m; when the turnout opening at the turnout post is 350mm, the distance between the corresponding positioning point and the turnout WA is 17.68m, that is, x is 17.68 m.
  • the size of the switch opening at the switch post is generally determined according to the design situation.
  • one end of the lateral stay cable 1 is installed on the auxiliary cable 6 through the first suspension clamp 12.
  • Step S4 excavation and backfilling of the pull pit:
  • two temporary cables 20 are respectively drawn on the outer sides of the two pillars.
  • the cable pit is excavated, and the cable pit is excavated about 8m outside the two pillars.
  • the temporary stay cable 20 is inclined to the outside of the contact net, and the temporary stay cable 20 and the auxiliary cable 6 are on the horizontal plane.
  • the included angle is 6-10°, then the anchor plate and tie rods are installed, and finally the foundation pit is backfilled.
  • Step S5 on-site installation and adjustment:
  • the top end of the temporary stay wire 20 and the top of the column are fixedly connected by the lower anchor angle steel 7, and the bottom end of the temporary stay wire 20 is fixedly connected in the cable pit by the anchor plate and the wire rod. .
  • the temporary pull wire 20 and the lower anchor angle steel 7 are connected by a single-ear wedge-shaped wire clip.
  • the installation height of the lower anchor angle steel 7 is the average value of the height of the load-bearing cable 21 at the positioning point of the lateral adjustment of the catenary and the height of the contact line 22 plus 150 mm.
  • one end of the horizontal cable 1 is connected to the auxiliary cable 6.
  • one end of the lateral cable 1 is connected to the auxiliary cable 6 through the first suspension clamp 12.
  • the two ends of the auxiliary cable 6 are respectively connected with the lower anchor angles 7 installed on the two pillars.
  • double-ear wedge wire clamp 8 is connected to the double-ear of the lower anchor angle steel 7 through the first adjusting bolt 9.
  • the first adjusting bolt 9 is loosened to the maximum length, and the first adjusting bolts 9 at both ends are tightened after the installation is completed.
  • the auxiliary cable 6 is connected to the first suspension cable clamp 12 by means of anti-skid backup cable.
  • the auxiliary cable 6 includes the main cable, the anti-skid backup cable and the parallel groove clamp, and the groove clamp is used for fixing Connect this cable with the anti-skid spare cable, and the anti-skid spare cable connected with the auxiliary cable 6 adopts steel stranded wire of the same material as the auxiliary cable 6.
  • the other end of the horizontal cable 1 is connected to the catenary.
  • the connection point between the horizontal cable 1 and the catenary is the positioning point for the horizontal adjustment of the catenary.
  • An adjustment mechanism is provided on the horizontal cable 1 , By adjusting the length of the adjustment mechanism to control the pull-out value of the horizontal adjustment positioning point of the contact net.
  • the adjusting mechanism is a second adjusting bolt 17, a first connecting section 10 is provided at one end of the second adjusting bolt 17, and a double connecting section 10 is sequentially connected to the other end of the second adjusting bolt 17.
  • the perforated plate 18, the insulator 19 and the second connecting section 11, the first connecting section 10 includes a copper stranded wire 102 and a first wedge-shaped clamp 101 arranged at both ends of the copper-stranded wire 102, and two first wedge-shaped clamps 101 They are used to connect the auxiliary cable 6 and the second adjusting bolt 17 respectively.
  • the second connecting section 11 includes a copper stranded wire 112 and a second wedge-shaped clamp 111 arranged at both ends of the copper-stranded wire 112, and two second wedge-shaped clamps 111 They are used to connect the insulator 19 and the load-bearing cable 21 respectively.
  • the first wedge-shaped clamp 101 at one end of the horizontal cable 1 is connected to the auxiliary cable 6 through the first suspension clamp 12, and the second wedge-shaped clamp 111 at the other end of the horizontal cable 1 passes through
  • the second suspension clamp 13 is connected to the load-bearing cable 21, and an eye-shaped clamp 15 is provided on the copper strand 112 of the second connecting section 11.
  • the contact line 22 is connected, and the positioning clamp of the tubular positioner 14 and the second suspension clamp 13 of the load-bearing cable 21 are arranged up and down along the vertical surface.
  • the load-bearing cable 21 is also connected to the second suspension wire clamp 13 by means of an anti-skid spare line.
  • the load-bearing cable 21 includes the main line 211 and the anti-skid spare line. 212 and the parallel groove clamp 213, and the parallel groove clamp 213 are used to fixly connect the main line 211 and the anti-skid spare line 212, and the anti-skid spare line 212 of the load-bearing cable 21 adopts copper stranded wire.
  • the catenary operation ladder car goes up the road, as shown in Figure 4, install the anti-skid backup line 212 on the load-bearing cable 21, use the inverted chain to connect the load-bearing cable 21 and the horizontal cable 1, tighten the inverted chain, and connect the anti-skid backup cable
  • the second suspension clamp 13 is connected to the second wedge clamp 111 of the horizontal cable; the same method is used to connect the contact line 22 with the positioning clamp of the tubular positioner 14 of the horizontal cable.
  • the catenary laser measuring instrument to measure the pull-out value of the lateral adjustment positioning point of the catenary, and compare it with the above a.
  • Adjust, after adjustment, the pull-out value of the horizontal adjustment positioning point of the catenary is the same as the pull-out value a of the horizontal adjustment positioning point of the catenary required by the temporary switch.
  • the auxiliary cable 6 and the lateral cable 1 in Embodiment 1 are both single leads. According to the actual situation of the site, as shown in Figures 7 and 8, there are two auxiliary cables and lateral cables.
  • the auxiliary cables include an upper auxiliary cable 61 and a lower auxiliary cable 62 arranged up and down.
  • the height of the positioning point for the lateral adjustment of the force cable 21 is 150mm, and the height of the lower auxiliary cable 62 is 500mm higher than the lateral adjustment point of the contact line 22;
  • the two horizontal cables are arranged up and down, and the upper horizontal cable is correspondingly connected with the force-bearing cable 21,
  • the lower transverse cable is correspondingly connected with the contact wire 22 through the tubular positioner 14.
  • the present invention provides a construction method for the temporary positioning of the catenary in unfavorable terrain.
  • Temporary auxiliary cables 6 are used to fix the lateral cables 1, and the lateral cables 1 are used to fix the catenary.
  • Anchor bolts and steel columns are drilled and installed on the bridge to avoid damage to the existing bridge; through preliminary measurement and calculation, the horizontal adjustment positioning point of the catenary above the frame bridge is determined, reducing construction links and increasing horizontal adjustment positioning The accuracy of the point; the method adopted is simple and practical, which improves the construction efficiency; uses the catenary laser measuring instrument to measure the pull-out value of the catenary lateral adjustment positioning point, and it can be adjusted by the adjustment mechanism on the lateral cable 1, Ensure that the technical parameters of the catenary switch on the bridge meet the requirements.

Abstract

一种不利地形处接触网临时定位的施工方法,包括现场交桩及测量,辅助索(6)的计算和预制,横向拉索(1)的计算和预制,拉线坑开挖和回填,现场安装及调整。通过采取临时的辅助索(6)来固定横向拉索(1),通过横向拉索(1)来固定接触网,避免了在既有桥上钻孔植入锚栓和安装钢柱,避免了对既有桥梁的破坏;通过前期测量和计算确定在框构桥上方的接触网横向调节定位点,减少施工环节,增加了横向调节定位点的准确度;采用的方法简便实用、提高了施工效率;使用接触网激光测量仪测量接触网横向调节定位点的拉出值,并且可通过横向拉索(1)上的调节机构对其进行调节,确保桥上接触网线岔的技术参数满足要求。

Description

一种不利地形处接触网临时定位的施工方法 技术领域
本发明属于电气化铁路接触网施工技术领域,特别涉及一种不利地形处接触网临时定位的施工方法。
背景技术
接触网是一个大的系统,包括了支柱及基础、支持装置、接触悬挂、接地与回流装置等,其中接触悬挂包含了承力索,接触线、吊弦及相关零部件,所述吊弦上端与承力索连接,所述吊弦下端与接触线连接,起到悬吊接触线的作用。接触网的定位特指对承力索和接触线的定位。
既有电气化铁路站场改建中,咽喉区的道岔改造较多,且都需要施工天窗进行作业,车站两端咽喉区存在较多既有下穿框构桥,很难避免在桥面插入临时道岔进行过渡施工,此时道岔上方的接触网需要同步过渡施工。
以往的施工中,往往是顺铁道线路方向、跨桥架设一组大跨度特型过渡硬横梁,然后在硬横梁上安装过渡腕臂对接触网进行定位,此方法工作量大、施工周期长、造价高,需要大型吊车作业、且存在只能对最外侧线路接触网进行定位的缺点。
因此,需要提供一种针对上述现有技术不足的改进技术方案。
发明内容
本发明的目的在于提供一种不利地形处接触网临时定位的施工方法,以解决或缓解上述现有技术中存在的问题。
为了实现上述目的,本发明提供如下技术方案:
本发明提供了一种不利地形处接触网临时定位的施工方法,所述施工方法包括以下步骤:
步骤S1,现场交桩及测量:
确认与接触网线路对应的临时道岔位置并进行交桩,其中,所述临时道 岔位置包括:岔首、岔心及岔尾;
分别测量接触网的线路中同侧两个支柱的第一支柱侧面限界和第二支柱侧面限界;
分别测量岔心至两个支柱外缘的第一垂直距离和第二垂直距离;
测量岔首至岔心的距离及岔心至岔尾的距离;
步骤S2,辅助索的计算和预制:
根据步骤S1中第一垂直距离和第二垂直距离计算辅助索的总长;
根据计算的辅助索的总长预制辅助索;
步骤S3,横向拉索的计算和预制:
计算横向拉索的预制总长度,并根据计算结果预制横向拉索;
根据道岔定位表确定横向拉索的安装位置;
步骤S4,拉线坑开挖和回填:
分别在两个支柱的外侧开挖拉线坑;
在拉线坑中安装锚板、拉线棒,回填拉线坑;
步骤S5,现场安装及调整:
安装下锚角钢和临时拉线:在天窗作业时间,分别在两个支柱上安装下锚角钢及临时拉线;
安装横向拉索的一端:根据步骤S3中的确定的横向拉索的安装位置,将横向拉索一端通过悬吊线夹与辅助索连接;
安装辅助索:所述辅助索的两端分别与两个支柱上安装的下锚角钢连接;
安装横向拉索的另一端:横向拉索的另一端与接触网连接,横向拉索与接触网的连接点为接触网的横向调节定位点,在横向拉索上设有调节机构,通过调整调节机构的长度控制接触网的横向调节定位点的拉出值。
与最接近的现有技术相比,本发明实施例的技术方案具有如下有益效果:
1、本发明采取辅助索来固定横向拉索,通过横向拉索来固定接触网,避免了在既有桥上钻孔植入锚栓和安装钢柱,避免了对既有桥梁的破坏;
2、通过前期测量和计算确定在框构桥上方的接触网的横向调节定位点,减少施工环节,提高横向调节定位点的准确度;
3、采用的方法简便实用、提高了施工效率;
4、通过使用接触网激光测量仪测量接触网横向调节定位点的拉出值进行比对,不符合要求时可通过横向拉索上的调节机构进行调节,确保桥上接触网线岔的技术参数满足要求。
附图说明
构成本发明的一部分的说明书附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。其中:
图1为本发明的线路布置示意图;
图2是图1中辅助索的结构详图;
图3是图2中横向拉索的结构详图;
图4是图3中横向拉索与承力索连接点处结构详图;
图5是本发明的施工路线图;
图6是道岔定位表;
图7是实施例2的双横向拉索的结构示意图;
图8是实施例2的双辅助索的结构示意图。
附图标记说明:
1-横向拉索;2-岔心;3-岔尾;4-左侧支柱;5-右侧支柱;6-辅助索;61-上部辅助索;62-下部辅助索;7-下锚角钢;8-双耳楔形线夹;9-第一调节螺栓;10-第一连接段;101-第一楔形线夹;102-第一铜绞线;11-第二连接段;12-第一悬吊线夹;13-第二悬吊线夹;14-定位器;15-眼型线夹;16-第二楔形线夹;17-第二调节螺栓;18-双孔连板;19-绝缘子;20-临时拉线;21-承力索;22-接触线。
具体实施方式
如图1至图8所示,本发明提供一种不利地形处接触网交叉线岔或桥上曲线处临时定位的施工方法。
本实施例以硬横梁区段为例,具体施工工艺如下:
步骤S1,现场交桩及测量:
如图1所示,确认与接触网线路对应的临时道岔位置并进行交桩,其中,所述临时道岔位置包括:岔首WA、岔心2及岔尾3。
使用钢卷尺测量以下数值:
A、测量接触网的线路中同侧的相邻两个支柱的第一支柱侧面限界Cx1和第二支柱侧面限界Cx2;
B、分别测量岔心2至左右两个支柱外缘的第一垂直距离S1和第二垂直距离S2;
C、测量岔首WA至岔心2的距离y1及岔心2至岔尾3的距离y2。
步骤S2,辅助索6的计算和预制:
A、计算辅助索6的长度:
辅助索6预制总长度S的计算:
S=S1+S2
预制辅助索6的线索总长L的计算:
L=S-2Sx-2St
式中:
Sx为第一调节螺栓9的计算长度,单位为毫米(mm);
St为下锚角钢7的双耳孔与下锚角钢7本体之间的垂直距离,单位为毫米(mm)。
B、预制辅助索6:
在辅助索6的线索一端预制双耳楔形线夹8,并将预制好的辅助索6的一端连接在牢固可靠的位置,然后展放线索并使用倒链和紧线器将辅助索6的线索另一端紧固。上述L为辅助索6两端双耳楔形线夹8的孔距,计算长度L加500mm的回头距离后断线,然后预制另一端双耳楔形线夹8,使预制的回头长度为500mm。在辅助索的另一端预制双耳楔形线夹8。
进一步的,辅助索6的线索采用70mm 2镀铝锌钢绞线。
步骤S3,横向拉索1的计算和预制:
A、横向拉索1总长度的计算:
如图3所示,由于本实施例以硬横梁区段为例进行计算,因此采用等径圆支柱,支柱斜率不考虑。(软横跨区段采用格构钢支柱,需要考虑支柱的斜率和支柱本身锥度)。另外,考虑支柱挠度和线索被拉伸情况下,辅助索6的横向偏移量预设为100mm(此值可以为经验估计值)。
横向拉索1的预制总长度:
Lx=Cx+(|Cx2-Cx1|)*(S1+x-y1)/(S1+S2)-a-100
式中:
a为接触网横向调节定位点的拉出值,为预设值(比如:该值为设计图纸规定,每个定位点处的悬挂都有设计规定的拉出值,在铁路接触网施工中习惯用小写字母a表示),单位为毫米(mm);
Cx为Cx1、Cx2中较小者;
B、计算横向拉索1在辅助索6上的安装位置:
横向拉索1距离左侧支柱4的距离:
D1=S1+x-y1
式中:
y1为岔首WA至岔心2的距离,单位为毫米(mm);
x为岔首WA至定位点的垂直距离,单位为毫米(mm)。
此处的定位点为横向拉索1在辅助索6上的安装位置,x为岔首WA至安装横向拉索定位点的垂直距离,x值的确定方法如下:
火车轨道一般采用轨型为60Kg/m的钢轨,对于不同的道岔类型,例如常见的12号道岔,查道岔定位表(如图6所示)可知,道岔柱处的道岔开口大小为300mm时,对应的定位点距离岔首WA的距离是16.5m,即x为16.5m;当道岔柱处的道岔开口大小为350mm时,对应的定位点距离岔首WA的距离是17.68m,即x为17.68m。在查表过程中道岔柱处的道岔开口大小的选 取一般根据设计情况而定。
按照上述计算方法确定横向拉索1距离左侧支柱4的距离D1后,将横向拉索1的一端通过第一悬吊线夹12安装在辅助索6上。
步骤S4,拉线坑开挖和回填:
如图1所示,包括开挖拉线坑、埋设锚板及拉线棒、预制临时拉线20:
为了平衡辅助索6对两个支柱内侧产生的张力,在两个支柱的外侧分别拉设两根临时拉线20,首先进行拉线坑开挖,在两个支柱的外侧约8m处开挖拉线坑。
进一步的,为了平衡横向拉索1在施工过程中通过辅助索6对支柱产生的拉力,以保证支柱的稳定性,临时拉线20向接触网外侧倾斜设置,临时拉线20与辅助索6在水平面上的夹角为6-10°,然后安装锚板及拉线棒,最后进行基坑回填。
步骤S5,现场安装及调整:
A、安装下锚角钢7和临时拉线20:
利用天窗作业时间,分别在两个支柱上安装下锚角钢7,临时拉线20的顶端与支柱顶部通过下锚角钢7固定连接,临时拉线20的底端通过锚板及拉线棒固定连接于拉线坑内。
进一步的,临时拉线20与下锚角钢7之间通过单耳楔形线夹连接。
进一步的,下锚角钢7的安装高度为接触网横向调节定位点处承力索21的高度与接触线22的高度的平均值加150mm。
B、安装横向拉索1的一端:
根据步骤S3中确定的横向拉索1的安装位置,将横向拉索1的一端与辅助索6连接。
进一步的,横向拉索1的一端通过第一悬吊线夹12与辅助索6连接。
C、安装辅助索6:
所述辅助索6的两端分别与两个支柱上安装的下锚角钢7连接。
具体操作如下:将辅助索6一端的双耳楔形线夹8与左侧支柱4上的下锚角钢7连接,辅助索6的另一端的双耳楔形线夹8与右侧支柱5通过倒链连接,慢慢收紧倒链后将辅助索6的另一端的双耳楔形线夹8与右侧支柱5上的下锚角钢7连接。
进一步的,双耳楔形线夹8通过第一调节螺栓9与下锚角钢7的双耳连接。
进一步的,辅助索6的安装过程中,将第一调节螺栓9松到最大长度,安装完毕后再收紧两端的第一调节螺栓9。
为了配合第一悬吊线夹12,辅助索6采用防滑备线的方式与第一悬吊线夹12连接,辅助索6包括本线、防滑备线及并沟线夹,并沟线夹用于固定连接本线和防滑备线,与辅助索6连接的防滑备线采用与辅助索6同材质的钢绞线。
D、安装横向拉索1的另一端:
如图1至图4所示,横向拉索1的另一端与接触网连接,横向拉索1与接触网的连接点为接触网的横向调节定位点,在横向拉索1上设有调节机构,通过调整调节机构的长度控制接触网的横向调节定位点的拉出值。
如图3所示,所述调节机构为第二调节螺栓17,在所述第二调节螺栓17的一端设有第一连接段10,在所述第二调节螺栓17的另一端依次连接有双孔联板18、绝缘子19和第二连接段11,所述第一连接段10包括铜绞线102及设于铜绞线102两端的第一楔形线夹101,两个第一楔形线夹101分别用于连接辅助索6和第二调节螺栓17,所述第二连接段11包括铜绞线112及设于铜绞线112两端的第二楔形线夹111,两个第二楔形线夹111分别用于连接绝缘子19和承力索21。
如图2和图3所示,横向拉索1的一端的第一楔形线夹101通过第一悬吊线夹12与辅助索6连接,横向拉索1的另一端的第二楔形线夹111通过第二悬吊线夹13与承力索21连接,在第二连接段11的铜绞线112上设有眼型线夹15,所述眼型线夹15通过1300型的管型定位器14与接触线22连接, 所述管型定位器14的定位线夹与承力索21的第二悬吊线夹13沿垂直面上下布置。
进一步的,如图4所示,为了配合第二悬吊线夹13,承力索21也采用防滑备线的方式与第二悬吊线夹13连接,承力索21包括本线211、防滑备线212及并沟线夹213,并沟线夹213用于固定连接本线211和防滑备线212,承力索21的防滑备线212采用铜绞线。
具体操作如下:
接触网作业梯车上道,如图4所示,在承力索21上安装防滑备线212,使用倒链连接承力索21与横向拉索1,收紧倒链,连接防滑备线的第二悬吊线夹13与横向拉索的第二楔形线夹111;使用同样的方法连接接触线22与横向拉索的管型定位器14的定位线夹。随后松开倒链,使用接触网激光测量仪测量接触网的横向调节定位点拉出值,并与上述a进行比对,不符合要求时可通过横向拉索1上的第二调节螺栓17进行调节,通过调节后使接触网的横向调节定位点拉出值与该临时道岔要求的接触网横向调节定位点的拉出值a相同即可。
实施例2:
本实施例与实施例1的不同之处在于:
实施例1中的辅助索6和横向拉索1均为单根线索。根据现场实际情况,如图7和图8所示,辅助索和横向拉索均有两根,辅助索包括上下布置的上部辅助索61和下部辅助索62,其中上部辅助索61的高度比承力索21的横向调节定位点高150mm,下部辅助索62的高度比接触线22的横向调节定位点高500mm;两个横向拉索上下布置,上部的横向拉索与承力索21对应连接,下部的横向拉索通过管型定位器14与接触线22对应连接。
综上所述,本发明提供了一种不利地形处接触网临时定位的施工方法,采取临时的辅助索6来固定横向拉索1,通过横向拉索1来固定接触网,避免了在既有桥上钻孔植入锚栓和安装钢柱,避免了对既有桥梁的破坏;通过前期测量和计算确定在框构桥上方的接触网横向调节定位点,减少施工环节, 增加了横向调节定位点的准确度;采用的方法简便实用、提高了施工效率;使用接触网激光测量仪测量接触网横向调节定位点的拉出值,并且可通过横向拉索1上的调节机构对其进行调节,确保桥上接触网线岔的技术参数满足要求。

Claims (10)

  1. 一种不利地形处接触网临时定位的施工方法,其特征在于,所述施工方法包括以下步骤:
    步骤S1,现场交桩及测量:
    确认与接触网线路对应的临时道岔位置并进行交桩,其中,所述临时道岔位置包括:岔首、岔心及岔尾;
    分别测量接触网的线路中同侧两个支柱的第一支柱侧面限界和第二支柱侧面限界;
    分别测量岔心至两个支柱外缘的第一垂直距离和第二垂直距离;
    测量岔首至岔心的距离及岔心至岔尾的距离;
    步骤S2,辅助索的计算和预制:
    根据步骤S1中第一垂直距离和第二垂直距离计算辅助索的总长;
    根据计算的辅助索的总长预制辅助索;
    步骤S3,横向拉索的计算和预制:
    计算横向拉索的预制总长度,并根据计算结果预制横向拉索;
    根据道岔定位表确定横向拉索的安装位置;
    步骤S4,拉线坑开挖和回填:
    分别在两个支柱的外侧开挖拉线坑;
    在拉线坑中安装锚板、拉线棒,回填拉线坑;
    步骤S5,现场安装及调整:
    安装下锚角钢和临时拉线:在天窗作业时间,分别在两个支柱上安装下锚角钢及临时拉线;
    安装横向拉索的一端:根据步骤S3中的确定的横向拉索的安装位置,将横向拉索一端通过悬吊线夹与辅助索连接;
    安装辅助索:所述辅助索的两端分别与两个支柱上安装的下锚角钢连接;
    安装横向拉索的另一端:横向拉索的另一端与接触网连接,横向拉索与接触网的连接点为接触网的横向调节定位点,在横向拉索上设有调节机构,通过调整调节机构的长度控制接触网的横向调节定位点的拉出值。
  2. 根据权利要求1所述的不利地形处接触网临时定位的施工方法,其特征在于,在步骤S5中,所述临时拉线的顶端与支柱顶部通过下锚角钢固定连接,临时拉线的底端通过锚板及拉线棒固定连接于拉线坑内。
  3. 根据权利要求2所述的不利地形处接触网临时定位的施工方法,其特征在于,在步骤S5中,在辅助索的两端预制双耳楔形线夹,双耳楔形线夹通过第一调节螺栓与下锚角钢的双耳连接;
    辅助索的安装过程中将第一调节螺栓松到最大长度,安装完毕后再收紧两端的第一调节螺栓。
  4. 根据权利要求1所述的不利地形处接触网临时定位的施工方法,其特征在于,在步骤S5中,下锚角钢安装高度为接触网横向调节定位点处的承力索高度与接触线高度的平均值加150mm。
  5. 根据权利要求1所述的不利地形处接触网临时定位的施工方法,其特征在于,在调节机构的一端设有第一连接段,在调节机构的另一端依次连接有双孔联板、绝缘子和第二连接段,所述第一连接段包括铜绞线及设于铜绞线两端的第一楔形线夹,两个第一楔形线夹分别用于连接辅助索和调节机构,所述第二连接段包括铜绞线及设于铜绞线两端的第二楔形线夹,两个第二楔形线夹分别用于连接绝缘子和接触网的承力索;
    其中,所述调节机构为第二调节螺栓。
  6. 根据权利要求5所述的不利地形处接触网临时定位的施工方法,其特征在于,在步骤S5中,横向拉索的一端的第一楔形线夹通过第一悬吊线夹与辅助索连接,横向拉索的另一端的第二楔形线夹通过第二悬吊线夹与承力索连接;且在第二连接段的铜绞线上设有眼型线夹,所述眼型线夹通过管型定位器与接触线连接,所述管型定位器的定位线夹与承力索的第二悬吊线夹沿垂直面上下布置。
  7. 根据权利要求6所述的不利地形处接触网临时定位的施工方法,其特 征在于,辅助索及承力索均包括本线、防滑备线及并沟线夹,其中,所述并沟线夹用于固定连接本线和防滑备线,承力索的防滑备线采用铜绞线,辅助索的防滑备线与辅助索均采用同材质的钢绞线。
  8. 根据权利要求2所述的不利地形处接触网临时定位的施工方法,其特征在于,在支柱的外侧8m处开挖拉线坑,所述临时拉线的临时拉线角度向接触网外侧倾斜6-10°;
    临时拉线与下锚角钢之间通过单耳楔形线夹连接。
  9. 根据权利要求1-8任一项所述的不利地形处接触网临时定位的施工方法,其特征在于,辅助索和横向拉索均为单根线索。
  10. 根据权利要求1-8任一项所述的不利地形处接触网临时定位的施工方法,其特征在于,辅助索和横向拉索均有两根,两根辅助索上下布置,两根横向拉索上下布置,上部的横向拉索与承力索对应连接,下部的横向拉索通过管型定位器与接触线对应连接。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114049559A (zh) * 2021-11-17 2022-02-15 西南交通大学 一种铁路接触网整体吊弦载荷非接触测量方法和装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000270455A (ja) * 1999-01-11 2000-09-29 Shin Etsu Chem Co Ltd ケーブル管路止水構造及び止水施工方法
CN101602329A (zh) * 2009-07-01 2009-12-16 中铁七局集团电务工程有限公司 铁路既有线250km/h接触网系统的施工方法
CN206581682U (zh) * 2017-03-02 2017-10-24 中铁六局集团有限公司工程设计院 一种顶进框构桥接触网钢柱基础临时过渡结构
CN107380012A (zh) * 2017-07-31 2017-11-24 中铁电气化局集团有限公司第二工程分公司 既有电气化铁路接触网承、导双线同步更换施工工艺
CN108973781A (zh) * 2018-06-28 2018-12-11 中铁建大桥工程局集团第五工程有限公司 高速接触网腕臂及悬挂精确安装一体化工艺
CN109878380A (zh) * 2019-04-04 2019-06-14 中铁建大桥工程局集团电气化工程有限公司 一种地铁车辆段柔性接触网无轨道施工方法
CN110641319A (zh) * 2019-10-23 2020-01-03 中铁九局集团电务工程有限公司 一种电气化铁路上下行渡线接触网架设的施工方法
CN111469717A (zh) * 2020-05-09 2020-07-31 中铁十二局集团电气化工程有限公司 42#道岔处接触网无交叉布置施工方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937126B1 (zh) * 1970-10-19 1974-10-05
JP4548948B2 (ja) * 2001-02-13 2010-09-22 東日本旅客鉄道株式会社 複線式電車線路の工事方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000270455A (ja) * 1999-01-11 2000-09-29 Shin Etsu Chem Co Ltd ケーブル管路止水構造及び止水施工方法
CN101602329A (zh) * 2009-07-01 2009-12-16 中铁七局集团电务工程有限公司 铁路既有线250km/h接触网系统的施工方法
CN206581682U (zh) * 2017-03-02 2017-10-24 中铁六局集团有限公司工程设计院 一种顶进框构桥接触网钢柱基础临时过渡结构
CN107380012A (zh) * 2017-07-31 2017-11-24 中铁电气化局集团有限公司第二工程分公司 既有电气化铁路接触网承、导双线同步更换施工工艺
CN108973781A (zh) * 2018-06-28 2018-12-11 中铁建大桥工程局集团第五工程有限公司 高速接触网腕臂及悬挂精确安装一体化工艺
CN109878380A (zh) * 2019-04-04 2019-06-14 中铁建大桥工程局集团电气化工程有限公司 一种地铁车辆段柔性接触网无轨道施工方法
CN110641319A (zh) * 2019-10-23 2020-01-03 中铁九局集团电务工程有限公司 一种电气化铁路上下行渡线接触网架设的施工方法
CN111469717A (zh) * 2020-05-09 2020-07-31 中铁十二局集团电气化工程有限公司 42#道岔处接触网无交叉布置施工方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114049559A (zh) * 2021-11-17 2022-02-15 西南交通大学 一种铁路接触网整体吊弦载荷非接触测量方法和装置

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