WO2016082689A1 - 一种抱轨式磁浮轨道交通箱梁 - Google Patents

一种抱轨式磁浮轨道交通箱梁 Download PDF

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Publication number
WO2016082689A1
WO2016082689A1 PCT/CN2015/094751 CN2015094751W WO2016082689A1 WO 2016082689 A1 WO2016082689 A1 WO 2016082689A1 CN 2015094751 W CN2015094751 W CN 2015094751W WO 2016082689 A1 WO2016082689 A1 WO 2016082689A1
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Prior art keywords
plate
bottom plate
box girder
rail
box beam
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PCT/CN2015/094751
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English (en)
French (fr)
Inventor
罗世东
文望青
耿杰
杨光
杜振华
崔阳华
蔡泽
赵涛
王存国
田芳
陈锋
刘杰
姚岚
樊磊
马春
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中铁第四勘察设计院集团有限公司
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Priority claimed from CN201420736130.7U external-priority patent/CN204282185U/zh
Priority claimed from CN201410712261.6A external-priority patent/CN104594173B/zh
Application filed by 中铁第四勘察设计院集团有限公司 filed Critical 中铁第四勘察设计院集团有限公司
Publication of WO2016082689A1 publication Critical patent/WO2016082689A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type

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  • the invention relates to the technical field of bridge construction, and specifically designs a transportation rail beam for a magnetic rail track.
  • maglev rail traffic and straddle monorail rail beam type schemes There are two main types of existing maglev rail traffic and straddle monorail rail beam type schemes: single-line box girder scheme and two-line box girder scheme.
  • the single-line box girder scheme is the most economical beam type scheme in the unique "holding rail" operation mode such as maglev rail traffic and straddle monorail traffic.
  • the single-line box girder that meets the vehicle limit requirements is the most economical beam type scheme.
  • the beam structure of the scheme is the vehicle running track, and the two-line section is treated by two single-line box girder juxtaposition.
  • the beam type is adopted in the domestically built maglev and straddle monorail traffic track beams.
  • Figure 1 is a cross-sectional view of the Shanghai high-speed maglev traffic rail beam
  • Figure 2 is a cross-sectional view of the Chongqing straddle monorail rail beam
  • Figure 3 is a cross-sectional view of a medium and low-speed maglev traffic test track beam.
  • This treatment method solves the problem of daily line maintenance and emergency evacuation of passengers, but the investment is increased more, and the maintenance work of steel beams is relatively large.
  • the "holding rail” type rail transit belongs to the urban rail transit category, and the landscape requirements for the bridge are relatively high.
  • the single-line box girder adopted in China has not solved the landscape problem of the elevated bridge well.
  • the structure of the beam structure of the double-line box girder is divided into two layers.
  • the lower double-line box girder is the main force-bearing part.
  • Two small-span beam-bearing beams are arranged on the vehicle to form the “beam-on-beam” structure.
  • the double-line box girder has a wide deck surface, which can provide sufficient space for cable laying and maintenance and rescue escape passage settings.
  • the track-bearing beam is used as the vehicle's running track. It basically does not participate in structural stress, material waste, and poor economy.
  • the track-bearing beam needs to be cast-in-place after the completion of the construction of the double-line box girder.
  • the construction period is longer; thirdly, the structural combination of the double-line box girder and the bearing beam is high, and the landscape effect is not good.
  • the general section of elevated bridges is usually constructed by simply supported beams and prefabricated erection methods.
  • Maglev rail transit and straddle monorail traffic are all urban rail transit.
  • the line has many characteristics of small radius curve and continuous beam control nodes.
  • the constructed bridge is used as the transportation passage, and the frame beam is transported to the bridge position by the transport beam.
  • the double-line box girder has a large volume, and the beam-body transport equipment is difficult to pass the small radius curve.
  • the control node may also hinder the passage of the transport beam passage, resulting in multiple transitions of the bridging machine, and the investment is greatly increased, which affects the construction period.
  • the single-line box beam has a small volume, and the beam body can be transported on the ground.
  • the frame beam is adopted by means of a truck crane, a crawler crane, a gantry crane, etc., the beam body transportation and installation is more flexible, and the construction period goal is easier to realize.
  • single-line box girder construction is convenient and economical, but there are shortcomings such as routine maintenance of the line, difficulty in rescue and escape, and poor landscape effect;
  • the wire box beam satisfies the needs of cable laying, maintenance and rescue escape passage setting, the routine maintenance of the line is relatively simple, but there are problems of construction difficulties, long construction period and poor economy.
  • the present invention is directed to the problem of the above-mentioned background art, and provides a holding rail type magnetic levitation rail transportation box beam with simple structure and convenient construction, so that it can meet the functional requirements and has good economy.
  • the technical solution of the present invention is:
  • a holding rail type magnetic floating rail transportation box beam comprising a top plate, a bottom plate, and a web between the top plate and the bottom plate, wherein the top plate, the bottom plate and the web are integrally cast and formed reinforced concrete structures
  • the two sides of the top plate are provided with convex bosses for mounting the maglev track, and the two sides of the bottom plate are provided with wings extending obliquely upward.
  • the height of the flap does not exceed the surface of the top panel.
  • the top end of the wing plate is provided with a mounting platform, and the mounting platform is a boss structure extending horizontally outward.
  • the webs are respectively disposed obliquely on both sides between the top plate and the bottom plate.
  • the webs are vertically disposed on both sides between the top plate and the bottom plate, respectively.
  • the flap is curved.
  • the wing plate and the bottom plate are integrally cast reinforced concrete structures, and the bottom surface of the bottom plate at both ends of the box beam is provided with a horizontal support surface, and the bottom surface of the bottom plate between the two ends of the box beam The outer surface of the wing is curved in communication.
  • the rail-type magnetic levitation rail transportation box girder is provided with wings on both sides of the bottom plate of the box girder and not exceeding the surface of the top plate.
  • the inner side of the wing plate can be used as a cable laying passage, and the wing plate is arranged in an arc shape, which can be convex or The concave curved shape adapts to the needs of different venues and engineering environments.
  • the top of the wing plate is provided with a mounting platform, and the installation platform is arranged as a boss structure extending horizontally to the outside, which can be used for setting human walks and evacuation passages, and allowing passengers to evacuate through evacuation passages in case of an unexpected event of the vehicle, thereby improving the line response.
  • the installation platform can also be used to set up rail transit auxiliary facilities such as access passages, railings, noise barriers, signal planes, and AP antennas, which is beneficial to the daily maintenance of the line.
  • the wing plate of the box girder shields the track on the bridge, the trackside equipment, the cable, etc., and the landscape effect is obviously improved.
  • the bottom plate and the wing plate are curved to make the shape more beautiful.
  • the web can be selectively arranged, and is set as a web or two webs.
  • the two webs can be set as straight webs or inclined webs. Can adapt to different engineering needs.
  • the two ends of the bottom surface of the box girder are respectively provided with horizontal support surfaces for mounting the box girder on the carrier.
  • the invention is suitable for the operation of the "holding rail” type rail transit train, and satisfies the economical, convenient construction and landscape effects under the premise of meeting the structural strength and rigidity requirements and the spatial layout function requirements of the bridge.
  • Figure 1 is a cross-sectional view of the Shanghai high-speed maglev traffic rail beam.
  • Figure 2 is a cross-sectional view of a cross-seat monorail traffic track beam in Chongqing.
  • Figure 3 is a cross-sectional view of a track beam of a medium and low speed maglev traffic test line.
  • Figure 4 is a cross-sectional view of a double-line box girder.
  • Figure 5 is a cross-sectional view showing a unit box beam between two piers according to an embodiment of the present invention
  • FIG. 6 is a cross-sectional view showing the end of a box girder installed at a pier according to an embodiment of the present invention
  • Figure 7 is a cross-sectional view showing a unit box beam between two piers according to an embodiment of the present invention
  • Figure 8 is a cross-sectional view showing the installation of the end of the box girder at the pier of the second embodiment of the present invention
  • FIG. 9 is a schematic structural view of a bridge installed in an embodiment of the present invention.
  • a holding rail type magnetic floating rail transportation box beam includes a top board 1, a bottom board 2, and a web 3 located between the top board 1 and the bottom board 2.
  • two webs 3 are arranged, and two webs 3 are vertically arranged on two sides between the top plate 1 and the bottom plate 2, and the two webs 3 are symmetrically arranged along the central axis between the top plate 1 and the bottom plate 2, two The junction of the web 3 and the top plate 1 is at right angles, and a cubic cavity is formed in the middle of the box beam.
  • the two ends of the top plate 1 are provided with convex bosses 8 for mounting the maglev rails, and the two sides of the bottom plate 2 are provided with wings 4 extending obliquely upward, and the height of the wings 4 does not exceed the surface of the top plate 1.
  • the cross-section of the wing plate 4 is curved, in this embodiment, the outer convex arc shape, the wing plate 4 and the bottom plate 2 are integrally cast and formed reinforced concrete structures, and the bottom surface of the bottom plate 2 at both ends of the box beam is provided with a horizontal support surface 5, which is located at The bottom surface of the bottom plate 2 between the two ends of the box beam and the outer surface of the wing plate 4 are in an arc shape.
  • the wing 4 can also be concave or curved, or straight, but should leave a space for the trackside equipment such as a cable.
  • the top end of the flap 4 is provided with a mounting platform 9, which is a boss 8 structure that projects horizontally outward.
  • the installation platform 9 can be used for setting human walks and evacuation passages, and allowing the passengers to evacuate through the evacuation passages in the event of an emergency of the vehicle, thereby improving the ability of the line to respond to an emergency situation.
  • the installation platform 9 can also be used to set up rail transit auxiliary facilities such as access passages, railings, noise barriers, signal planes, and AP antennas, which is beneficial to the routine maintenance of the line.
  • a reinforcing rib and a reinforcing beam may be disposed between the wing 4 and the web 3 to reinforce the bearing capacity of the wing 4, but the various reinforcing structures should simultaneously leave sufficient space or clearance for accommodating the trackside device.
  • the top plate 1, the bottom plate 2 and the web 3 are integrally cast reinforced concrete structures.
  • the bottom plate of the top plate 1 may also be provided with a cross beam of the top plate 1 and a cross plate of the bottom plate 2 for reinforcing the strength of the top plate 1 and strengthening the bearing capacity and safety factor of the box girder to the rail.
  • the holding rail type magnetic levitation rail transportation box beam of the present embodiment includes two webs 3, which are respectively arranged obliquely on both sides between the top board 1 and the bottom board 2, and two belly portions.
  • the plate 3 is symmetrically disposed along the central axis between the top plate 1 and the bottom plate 2, and the web 3 has an obtuse angle with the top plate 1, and a trapezoidal cavity is formed in the middle of the box girder.
  • Other settings are the same as in the first embodiment.
  • a plurality of box girders are axially butted to form a rail beam which is disposed on the pier 7 by the adjacent two box girders.
  • the bottom surface of the bottom plate 2 at both ends of the box girder is provided with a horizontal support surface 5, and the horizontal support surface 5 at both ends of the box girder passes through the support 6 placed on the pier 7.
  • the beam body of the invention has a small amount and is constructed by a prefabricated erection method, and the beam body is convenient for transportation and erection.
  • the box girder of the present invention satisfies the economical, convenient construction and landscape effects on the premise of satisfying the requirements of structural strength and rigidity and the spatial layout function requirements of the bridge, and adapts to the “holding rail” type rail transit train. The need to run.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
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Abstract

一种抱轨式磁浮轨道交通箱梁，该箱梁包括顶板（1）、底板（2）、以及位于顶板（1）与底板（2）之间的腹板（3），顶板（1）、底板（2）和腹板（3）为整体浇筑成型的钢筋混凝土结构，顶板（1）两侧端设有供安装磁浮轨道用的外凸的凸台，底板（2）两侧设有向斜上方伸出的翼板（4）。翼板（4）顶端设有安装平台（9），安装平台（9）设置为向外侧水平方向伸出的凸台结构，可用于设置人性步道、疏散通道，还可以用于设置检修通道、栏杆、隔音屏障、信号机、AP天线等轨道交通附属设施，有益于线路的日常维护。箱梁的翼板对桥上轨道、轨旁设备、电缆等进行了遮蔽，景观效果明显改善。

Description

一种抱轨式磁浮轨道交通箱梁 技术领域
本发明涉及桥梁建造技术领域，具体设计一种抱轨式磁浮轨道交通箱梁。
背景技术
现有磁浮轨道交通和跨座式单轨交通轨道梁梁型方案主要有两种：单线箱梁方案和双线箱梁方案。
单线箱梁方案，在磁浮轨道交通和跨座式单轨交通等采取独特的“抱轨”运行方式中，满足车辆限界要求的单线箱梁是最经济的梁型方案。该方案梁部结构即为车辆走行轨道，双线地段采取两片单线箱梁并置的方式处理，国内已建的磁浮和跨座式单轨交通轨道梁均采用这种梁型。图1是上海高速磁浮交通轨道梁截面图，图2是重庆市跨座式单轨交通轨道梁截面图，图3是某中低速磁浮交通实验线轨道梁截面图。因车辆“抱轨”运行，单线箱梁桥上可利用空间有限，箱梁顶面只能满足轨道设置需要，供电轨、电缆可外挂于箱梁侧面及底面，线路日常维护以及车辆发生突发事件时乘客紧急疏散所需的通道无法设置，栏杆、隔声屏障等附属设施亦无处安装。为满足线路日常维护以及救援逃生需要，重庆市在建设第二条跨座式单轨交通线—轨道交通3号线时，通过轨道梁旁边架设钢梁完成沿线路的电缆敷设，其上覆盖网格钢板形成检修及救援逃生通道。该处理方式解决了日常线路维护及乘客紧急疏散的通道问题，但是投资增加较多，钢梁后期维护工作量也比较大。“抱轨”式轨道交通属城市轨道交通范畴，对桥梁的景观要求比较高，目前国内采取的单线箱梁均没能很好的解决高架桥梁的景观问题。
双线箱梁方案梁部结构分为两层，下层双线箱梁为主要受力部分，其上设置两道小承轨梁，作为车辆走形的轨道，形成“梁上梁”结构。如图4双线箱梁截面图所示，双线箱梁桥面较宽，能够提供充足的空间进行电缆敷设以及检修、救援逃生通道的设置。但其缺点也比较突出，首先，承轨梁作为车辆走行轨道，基本不参与结构受力，材料浪费，经济性差；其次，承轨梁需在双线箱梁施工完成后现浇施工，工序繁琐，工期更长；第三，双线箱梁与承轨梁的结构组合高度较高，景观效果也不好。
从保证施工质量、缩短工期、降低工程投资等方面考虑，高架桥梁一般地段通常采用简支梁、预制架设方法施工。
磁浮轨道交通和跨座式单轨交通均属城市轨道交通，线路存在小半径曲线多、连续梁控制节点多的特点。双线箱梁在梁场预制完成后，利用已施工的桥梁作为运输通道，用运梁车运至桥位后架梁就位。双线箱梁体量较大，梁体运架设备通过小半径曲线困难，控制节点也可能阻碍运梁通道贯通，造成架桥机多次转场，投资大幅增加，影响工期。单线箱梁体量较小，梁体可地面运输，采用汽车起重机、履带式起重机、龙门吊机等方法架梁，梁体运输架设更加灵活，工期目标更容易实现。
综上所述，目前磁浮轨道交通和跨座式单轨交通已有的梁型方案中，单线箱梁施工方便、经济性好，但存在线路日常维护以及救援逃生困难、景观效果差等缺点；双线箱梁虽然满足了电缆敷设和检修、救援逃生通道设置的需要，线路日常维护比较简单，但存在施工困难、工期较长、经济性差的问题。
所以，寻找一种型式合理、施工方便、经济性良好、景观效果好的“抱轨”式轨道交通轨道梁结构具有十分重要的意义。
发明内容：
本发明要针对上述背景技术存在的问题，提供一种结构简单、施工方便的抱轨式磁浮轨道交通箱梁，使其能满足使用功能要求、具有良好经济性。
为解决上述技术问题，本发明的技术方案为：
一种抱轨式磁浮轨道交通箱梁，该箱梁包括顶板、底板、以及位于所述顶板与所述底板之间的腹板，所述顶板、底板和腹板为整体浇筑成型的钢筋混凝土结构，所述顶板两侧端设有供安装磁浮轨道用的外凸的凸台，所述底板两侧设有向斜上方伸出的翼板。
较佳地，所述翼板的高度不超过顶板表面。
较佳地，所述翼板的顶端设有安装平台，所述安装平台为向外侧水平方向伸出的凸台结构。
较佳地，所述腹板分别倾斜布置在所述顶板与所述底板之间的两侧。
较佳地，所述腹板分别垂直布置在所述顶板与所述底板之间的两侧。
较佳地，所述翼板为弧形。
较佳地，所述翼板和所述底板为整体浇筑成型的钢筋混凝土结构，所述位于箱梁两端的底板底面设有水平支撑面，所述位于箱梁两端之间的底板底面和所述翼板外表面呈连通的弧形。
本发明的有益效果在于：
抱轨式磁浮轨道交通箱梁在箱梁的底板两侧设有外挑且高度不超过顶板表面的翼板，翼板内侧可以作为电缆铺设通道，翼板设置为弧形，可以是外凸或内凹的弧形，适应不同场地和工程环境的需要。
翼板顶端设有安装平台，安装平台设置为向外侧水平方向伸出的凸台结构，可用于设置人性步道、疏散通道，在车辆发生突发事件时让乘客通过疏散通道紧急疏散，提高线路应对紧急突发状况的能力。安装平台还可以用于设置检修通道、栏杆、隔音屏障、信号机、AP天线等轨道交通附属设施，有益于线路的日常维护。箱梁的翼板对桥上轨道、轨旁设备、电缆等进行了遮蔽，景观效果明显改善。
底板与翼板连通呈弧形使造型更美观，腹板可选择性设置，设置为一块腹板，或两块腹板，两块腹板可以设置为直腹板或斜腹板，三种方式可以适应不同的工程需求。箱梁底板底面的两端分别设置有水平支撑面，用以将箱梁安装于载体之上。
本发明为适应“抱轨”式轨道交通列车运行的需要，在满足结构强度和刚度要求以及桥上空间布局功能要求的前提下，兼顾经济性、方便施工、景观效果。
附图说明
图1为上海高速磁浮交通轨道梁截面图，
图2为重庆市跨座式单轨交通轨道梁截面图，
图3为某中低速磁浮交通实验线轨道梁截面图，
图4为双线箱梁截面图，
图5为本发明实施例一两个桥墩之间一个单元箱梁的横截面图，
图6为本发明实施例一箱梁粱端安装于桥墩处的横截面图，
图7为本发明实施例二两个桥墩之间一个单元箱梁的横截面图，
图8为本发明实施例二箱梁粱端安装于桥墩处的横截面图，
图9为本发明实施例一安装于桥梁的结构示意图。
图中：
1、顶板，2、底板，3、腹板，4、翼板，5、水平支撑面，6、支座，7、桥墩，8、凸台，9、安装平台。
具体实施方式
下面结合附图和实施例对本发明做进一步的说明。
实施例一，如图5和图6所示一种抱轨式磁浮轨道交通箱梁，该箱梁包括顶板1、底板2、以及位于顶板1与底板2之间的腹板3。本实施例设置两块腹板3，两块腹板3分别垂直布置在顶板1与底板2之间的两侧，两块腹板3沿顶板1与底板2之间的中轴线对称设置，两块腹板3与顶板1连接处呈直角，在箱梁中部形成一个立方体状的空腔。
顶板1两侧端设有供安装磁浮轨道用的外凸的凸台8，底板2两侧设有向斜上方伸出的翼板4，翼板4的高度不超过顶板1表面。
翼板4的截面为弧形，本实施例中为外凸弧形，翼板4和底板2为整体浇筑成型的钢筋混凝土结构，位于箱梁两端的底板2底面设有水平支撑面5，位于箱梁两端之间的底板2底面和翼板4外表面呈连通的弧形。实践中翼板4还可以是内凹的弧形，或者直线型，但应为容纳电缆等轨旁设备留下容纳空间。
翼板4的顶端设有安装平台9，安装平台9为向外侧水平方向伸出的凸台8结构。这里的安装平台9可用于设置人性步道、疏散通道，在车辆发生突发事件时让乘客通过疏散通道紧急疏散，提高线路应对紧急突发状况的能力。安装平台9还可以用于设置检修通道、栏杆、隔音屏障、信号机、AP天线等轨道交通附属设施，有益于线路的日常维护。
在翼板4和腹板3之间还可以设置加强筋、加强梁，用以加强翼板4的承重能力，但各种加强结构同时应当为容纳轨旁设备留下足够的空间或空隙。顶板1、底板2和腹板3为整体浇筑成型的钢筋混凝土结构。顶板1的底面还可以设置顶板1横梁和底板2横梁，用以加强顶板1的强度，加强箱梁对轨道的承载能力和安全系数。
如图7至图8所示的实施例二，本实施例的抱轨式磁浮轨道交通箱梁包括两块腹板3，分别倾斜布置在顶板1与底板2之间的两侧，两块腹板3沿顶板1与底板2之间的中轴线对称设置，腹板3与顶板1之间呈钝角，在箱梁中部形成一个梯形空腔。其他设置均与实施例一相同。
多个箱梁沿轴向对接形成轨道梁由相邻两箱梁对接处置于桥墩7上，位于箱梁两端的底板2底面设有水平支撑面5，箱梁两端的水平支撑面5通过支座6置于桥墩7上。
本发明的梁体体量较小，采用预制架设方法施工，梁体运输及架设方便。
如图9所示，本发明所述箱梁在满足结构强度和刚度要求以及桥上空间布局功能要求的前提下，兼顾经济性、方便施工、景观效果，适应了“抱轨”式轨道交通列车运行的需要。
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (7)

  1. 一种抱轨式磁浮轨道交通箱梁，该箱梁包括顶板(1)、底板(2)、以及位于所述顶板(1)与所述底板(2)之间的腹板(3)，所述顶板(1)、底板(2)和腹板(3)为整体浇筑成型的钢筋混凝土结构，所述顶板(1)两侧端设有供安装磁浮轨道用的外凸的凸台(8)，其特征在于：所述底板(2)两侧设有向斜上方伸出的翼板(4)。
  2. 根据权利要求1所述的一种抱轨式磁浮轨道交通箱梁，其特征在于：所述翼板(4)的高度不超过顶板(1)表面。
  3. 根据权利要求1所述的一种抱轨式磁浮轨道交通箱梁，其特征在于：所述翼板(4)的顶端设有安装平台(9)，所述安装平台(9)为向外侧水平方向伸出的凸台结构。
  4. 根据权利要求1所述的一种抱轨式磁浮轨道交通箱梁，其特征在于：所述腹板(3)分别倾斜布置在所述顶板(1)与所述底板(2)之间的两侧。
  5. 根据权利要求1所述的一种抱轨式磁浮轨道交通箱梁，其特征在于：所述腹板(3)分别垂直布置在所述顶板(1)与所述底板(2)之间的两侧。
  6. 根据权利要求1-5中任一权利要求所述的一种抱轨式磁浮轨道交通箱梁，其特征在于：所述翼板(4)为弧形。
  7. 根据权利要求6所述的一种抱轨式磁浮轨道交通箱梁，其特征在于：所述翼板(4)和所述底板(2)为整体浇筑成型的钢筋混凝土结构，所述位于箱梁两端的底板(2)底面设有水平支撑面(5)，所述位于箱梁两端之间的底板(2)底面和所述翼板(4)外表面呈连通的弧形。
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