WO2018028087A1 - 具有周向钝角连接的箱型管道 - Google Patents

具有周向钝角连接的箱型管道 Download PDF

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Publication number
WO2018028087A1
WO2018028087A1 PCT/CN2016/107897 CN2016107897W WO2018028087A1 WO 2018028087 A1 WO2018028087 A1 WO 2018028087A1 CN 2016107897 W CN2016107897 W CN 2016107897W WO 2018028087 A1 WO2018028087 A1 WO 2018028087A1
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Prior art keywords
circumferential
box
unit
plate
pipe
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PCT/CN2016/107897
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English (en)
French (fr)
Inventor
战福军
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南京联众建设工程技术有限公司
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Application filed by 南京联众建设工程技术有限公司 filed Critical 南京联众建设工程技术有限公司
Priority to AU2016419240A priority Critical patent/AU2016419240B2/en
Priority to EP16912541.6A priority patent/EP3434951B1/en
Priority to US16/083,447 priority patent/US10648152B2/en
Priority to JP2017546760A priority patent/JP6538184B2/ja
Publication of WO2018028087A1 publication Critical patent/WO2018028087A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/003—Rigid pipes with a rectangular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/006—Rigid pipes specially profiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal
    • F16L9/06—Corrugated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/22—Pipes composed of a plurality of segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/12—Geometrical or physical properties corrugated
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1628—Shapes rectangular
    • E02D2200/1642—Shapes rectangular made from multiple elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals
    • E02D2300/0029—Steel; Iron
    • E02D2300/0032—Steel; Iron in sheet form, i.e. bent or deformed plate-material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

Definitions

  • the invention discloses a box-shaped pipe, in particular to a box type pipe with a circumferential obtuse angle connection.
  • the steel corrugated steel pipe for highways generally has a circular shape, an elliptical shape, a horseshoe shape or an arch shape, and all adopts a circular arc plate structure, so that the structural force of the pipe and soil is utilized when the structure is stressed, so as to ensure
  • the strength of the overall structure, regardless of the unit cores of the unit tube sections, is the same center, the same radius, or multiple centers, multiple radii, and the circumferential connection of the unit plates adopts a circular arc transition instead of the passing plate.
  • the sheet is connected to the sheet at an obtuse angle. As shown in Fig. 16 to Fig. 18, the cross-sectional shape is generally circular, elliptical, horseshoe-shaped or arched, etc.
  • the ordinary arc-transition tube culvert has low internal clearance utilization, large waste space, and the top chord height is large. , thereby increasing the amount of earthwork excavation.
  • the clearance of the internal clearance of the pipeline such as the corridor structure of the urban underground integrated pipe gallery and the culvert of the vehicle that needs to pass through the interior, it is necessary to make the cross section an approximately rectangular box shape to ensure the clearance of the pipeline.
  • utilization rate it is necessary to use the common force principle of pipe and soil to ensure the overall strength, but also to facilitate construction and speed up the construction progress.
  • the traditional cross-section and connection method cannot meet the requirements.
  • the object of the present invention is to provide a box-type pipe having a circumferential obtuse angle connection in which the internal clearance of the pipe and the utilization of the section are maximized, the strength of the pipe wall is high, and the pipe splicing can be quickly realized and the production process is simplified.
  • the box-shaped pipe with circumferential obtuse angle connection of the present invention comprises: unit-unit pieces which are respectively arranged on the upper, lower and two side sides are assembled in the circumferential direction to form a unit pipe joint, and the unit pipe joints are assembled in the axial direction to form a box type. a pipe; wherein the unit plate is an arc-shaped corrugated plate arched to the outside of the box-shaped pipe, and adjacent unit plates form an obtuse angle of circumferential connection.
  • the contact ends of the adjacent unit plates are provided with connecting flanges, and the adjacent connecting flanges are splicing connecting faces.
  • the circumferential connection portion of the adjacent unit plates adopts a non-arc transitional connection form and a non-orthogonal connection form, but is connected by an obtuse angle connection between the unit plate and the unit plate.
  • the connecting flange is a flat flange or an angle steel flange.
  • angle steel flange includes a pair of L-shaped plates, one side of which is in contact with each other, and the other side is respectively connected to an adjacent unit plate.
  • the adjacent connecting flanges are connected by a circumferential connecting structure
  • the circumferential connecting structure comprises a connecting plate bent by itself at an angle
  • the reinforcing ribs are arranged inside the connecting plate a triangular inner cavity is formed between the reinforcing rib and the connecting plate.
  • the connecting plate has an acute angle of bending. It utilizes the superior pressure bearing capacity of the combination of acute angle connecting plates and ribs, which can reduce manufacturing costs, achieve standardized production, and further enhance the strength of the overall structure.
  • a connecting hole for circumferential connection is formed on the connecting plate, and the connecting plate and the connecting flange are connected to each other by bolts to realize connection between adjacent unit plates.
  • the circumferential connection structure can play a certain positioning role, which facilitates the circumferential connection of adjacent unit plates during the installation process, and achieves quick installation.
  • a flow hole for pouring concrete is opened on the connecting plate.
  • a circulation hole is opened at the corresponding position of the connecting plate to realize the circulation of the concrete to form a continuous hollow cavity structure. Assembled to form pipe joints, further enhancing the vertical pressure bearing capacity of the pipeline.
  • the unit sheet has at least one curvature.
  • the corrugated plate is composed of a metal plate which is bent to form a protrusion itself; or the metal plate is bent to form a convex shape, and the plate or tube is combined with the protrusion to form a hollow cavity structure; or The plate and the metal pipe are spliced together; or the C-shaped steel, the channel steel, the I-beam, the curved steel, the angle steel or the corrugated plate are buckled with the metal plate to form a hollow cavity structure.
  • the hollow cavity is filled with concrete, or steel bars are arranged in the hollow cavity and filled with concrete.
  • reinforcing bars, embedded parts or hooks for arranging lines or hoses are provided on the inner wall of the unit pipe joint.
  • a rigid connection structure spanning adjacent tube segments is provided at the axial edges of the adjacent unit tube segments, the rigid connection structure including a pair of relative fastenings A fixing plate at the edge of the unit tube.
  • the rigid connecting structure can effectively prevent the deformation or pull-off of the adjacent units when they are axially spliced in actual engineering.
  • the section of the pipeline is a box shape with a nearly rectangular shape, and the utilization ratio of the pipeline is high; and the unit plate adopts a circular arc structure, and the strength and bearing capacity of the overall structure are maximized by utilizing the principle of common force of the pipe and soil;
  • the curvature of the unit plate of the present invention can be independent of the diameter and span of the pipe. Unlike the assembled steel bellows with a circular cross section, the curvature of the unit plate is completely related to the diameter of the pipe, and affects the unit plate. Slice wave height And the choice of the pitch;
  • the four obtuse angle connection structures of the unit pipe joints of the invention solve the problem that the diameter of the coil circle cannot be too small when the wave height of the corrugated plate is high, and the four connection angles are not arc transitions, and the wave height can be used very high.
  • the corrugated plate greatly increases the moment of inertia of the corrugated plate, so that the diameter of the pipe joint can be made large;
  • the box type pipe is connected by flat flange or angle steel flange in the circumferential direction.
  • the length of each section can be more than 10 meters.
  • the overall construction progress is greatly accelerated, especially when angle steel flange connection is used.
  • the force condition of the area is greatly improved, avoiding the phenomenon that the joint of the connecting flange and the unit plate is in a single welded joint under the dynamic load condition, and the structure of the pipe body is broken;
  • the circumferential connection structure is used as a limit when installing the pipeline to prevent the top plate from sliding left and right to ensure the safety of the installation process;
  • Figure 1 is a schematic view of a circumferential joint structure of the present invention without pouring concrete
  • FIG. 2 is a schematic view showing a circumferential joint structure of a concrete to be poured according to the present invention
  • Figure 3 is a schematic view showing the structure of a flat flange in the present invention.
  • FIG. 4 is a schematic structural view of a unit plate with a circumferential connection structure according to the present invention.
  • Figure 5 is a schematic cross-sectional view of a box-type pipe with a circumferential connection structure according to the present invention
  • Figure 6 is a schematic view showing the structure of a box type pipe with a circumferential connecting structure in the present invention.
  • Figure 7 is a schematic view showing the structure of a unit plate which is connected by a straight flange in the present invention.
  • Figure 8 is a schematic view showing the structure of a box type pipe connected by a straight flange in the present invention.
  • Figure 9 is a schematic cross-sectional view of Figure 8.
  • Figure 10 is a partial schematic view of the corner portion when the flat flange is connected
  • Figure 11 is a partial schematic view of the corner portion of the angle steel flange connection
  • FIG. 12 is a schematic structural view of a circular arc transition connection form in the prior art
  • FIG. 13 is a schematic structural view of a right angle transition connection form in the prior art
  • Figure 14 is a schematic view showing the force of the obtuse angle connection form of the present invention.
  • Figure 15 is a schematic view showing the structure of the unit pipe joint in the axial direction of the present invention.
  • Figure 16 is a schematic view showing the structure of the internal clearance of the arched pipe in the prior art
  • 17 is a schematic structural view of the internal clearance of a circular pipe in the prior art.
  • Figure 18 is a schematic view showing the structure of the internal clearance of the elliptical pipe in the prior art.
  • a box type pipe having a circumferential obtuse angle connection includes assembling unit pipe segments 102 in a circumferential direction by unit plates 101 respectively located on the upper, lower and both sides, the unit The pipe joint 102 is assembled in the axial direction to form a box-shaped pipe; the unit plate piece 101 is an arc-shaped corrugated plate arched to the outside of the box-type pipe, and the corrugated road is perpendicular to the axis of the box-shaped pipe, and the adjacent unit plate 101 Forming an obtuse angle of the circumferential connection therebetween; wherein, when the unit plate piece 101 is spliced in the circumferential direction, the contact end portion of the adjacent unit plate piece 101 is provided with the connection flange 103, and the adjacent connection flange 103 is a spliced connection As shown in FIG.
  • the connecting flange 103 is a flat flange or an angle steel flange
  • a circumferential connecting hole is formed on the circumferential joint surface of the unit plate 101 and the connecting flange 103, and is realized by bolts.
  • the flange surface of the flat flange is at an angle to the arc surface of the unit plate.
  • the angle steel flange is an L-shaped plate, and one side of the L-shaped plate and the unit plate 101 are connected to each other by bolts; wherein, when the unit plate 101 is spliced in the circumferential direction, the adjacent L-shaped plates are connected to each other by bolts.
  • the box type pipe is connected by flat flange or angle steel flange in the circumferential direction, and the overall construction progress is greatly accelerated. Especially when the angle steel flange connection is used, the stress in the corner stress concentration area is greatly improved, and the connection method is avoided.
  • the form of single welding connection between the blue plate and the unit plate is caused by cracking of the weld seam under dynamic load conditions and causing damage to the pipe structure.
  • the unit sheets 101 respectively located on the upper, lower and both sides have at least one curvature, and the four unit sheets may be sheets of the same curvature, or may be two, three or four different degrees of curvature.
  • Piece composition the corrugated plate is composed of a metal plate which is bent to form a protrusion; or the metal plate is bent to form a convex shape, and the plate or tube is combined with the protrusion to form a hollow cavity structure; or a metal plate and a metal The tube is spliced together; or the C-shaped steel, the channel steel, the I-beam, the curved steel, the angle steel or the corrugated plate are buckled with the metal plate to form a hollow cavity structure.
  • the hollow cavity may be filled with concrete, or steel bars may be arranged in the hollow cavity and filled with concrete.
  • the corrugation height value and the section moment of inertia of the corrugated plate of the pipe of the invention can be very high, and the difficulty of bending into the required curvature is avoided when the pipe diameter is small or the radius of the arc transition section is small, thereby also making the curvature of the plate It is no longer limited by the diameter and span of the pipeline, which facilitates manufacturing.
  • the circumferential connection part of adjacent unit plates adopts a non-arc transitional connection form, a non-orthogonal connection form, but a pass
  • the unit plate is connected to the unit plate at an obtuse angle.
  • the traditional arc transition connection form has higher requirements for the manufacturing process, and the arc uniformity of the adjacent unit plates is required to be high, otherwise it is difficult to install, and more importantly: when the corrugation height is high, When the diameter of the pipe is small or the radius of the arc transition section is small, it is difficult to bend into the required arc, thereby limiting the use of the corrugated plate with large wave height and large moment of inertia. And the direction of the force of the pipe in the arc transition connection form is the circumferential direction of the plate. As shown in Fig. 13, the right angle connection form cannot utilize the principle of common force of the pipe and soil, and the transmission of the upper load through the joint is completely absorbed by the two side columns, and the bearing capacity of the opposite column is extremely high.
  • the direction of the force of each plate is also the direction of the ring direction of the plate, but since it is an obtuse angle connection, the non-circular arc is connected, and the direction of the force of the connecting corner is as shown in FIG. 14 .
  • the side backfill presses the top plate so that the side plates at the joint corners have a larger upward force on the top plate, reducing the upper load pressure on the top plate.
  • the vertical pressure of the top plate makes the top plate have a large lateral thrust on the side plate at the connecting corner, which reduces the lateral load pressure on the side plate, and the side plate load and the top load are visible in this connection structure. Underneath, some of the loads can be offset each other, making the overall structure more reasonable.
  • the pipe section is an approximately rectangular box shape, and the pipeline clearance utilization rate is high, as shown by the broken line in FIG. 5 and FIG. 9; wherein the unit plate adopts an arc-shaped corrugated plate with a circular arc structure, and backfills in the corridor body. After that, the surrounding backfill can form a good wrapping effect on the gallery.
  • the surrounding soil and the pipe structure form a whole, because the plate is circular in the circumferential direction, using the principle of common force of pipe and soil. The strength and endurance of the overall structure is maximized.
  • the adjacent connecting flanges 103 are connected by a circumferential connecting structure
  • the circumferential connecting structure includes a connecting plate bent by itself at an angle. 104, the bending angle is an acute angle, a reinforcing rib 105 is disposed on the inner side of the connecting plate 104, and a triangular inner cavity is formed between the reinforcing rib 105 and the connecting plate 104.
  • the ribs make the overall structure more stable, and the connecting plate can also play a certain positioning role, which facilitates the circumferential connection of adjacent unit plates during the installation process, and achieves quick installation.
  • the invention utilizes the superior pressure bearing capacity of the acute angle connecting plate and the rib combination, can reduce the manufacturing cost, realize the standardized production, and further enhance the stress intensity of the overall structure.
  • the contact end portion of the unit plate 101 is provided with a connecting flange 103.
  • the connecting flange 103 is a flat flange, and the flange surface is perpendicular to the corrugated surface of the unit plate, that is, The flange face is located on the axis of the curved unit plate, as shown in Figure 5.
  • the present invention has a connection hole 106 for circumferential connection on the connecting plate 104, and a circumferential connecting hole is formed on the circumferential surface of the unit plate 101 and the connecting flange 103.
  • the connection between the adjacent unit sheets is achieved by bolts to the connection holes 106 and the connection holes 106 on the connection plate 103.
  • a flow hole 107 for pouring concrete is opened on the connecting plate 104.
  • a circulation hole is opened at the corresponding position of the connecting plate to realize the circulation of the concrete to form a continuous hollow cavity structure.
  • the assembly forms a pipe joint to further enhance the vertical pressure bearing capacity of the pipe gallery.
  • the present invention provides reinforcing steel, embedded parts or hooks on the inner wall of the unit pipe joint 102 to arrange the pipeline or hose internally.
  • a rigid joint structure spanning adjacent unit pipe joints is provided at the axial edges of the adjacent unit pipe joints, and the rigid joint structure includes A pair of fastening plates 108 that are relatively fastened to the edges of the unit tube segments.
  • the rigid connecting structure can effectively prevent the deformation or pull-off of the adjacent units when they are axially spliced in actual engineering.
  • the invention has the following uses: urban underground integrated pipe gallery, culvert, subway tunnel, underground water collection pipe, water supply pipe or drainage pipe, seawater pipeline or other pipeline for conveying special medium.

Abstract

一种具有周向钝角连接的箱型管道，包括由分别位于上、下和两侧面的单元板片（101）沿周向拼装形成单元管节（102），单元管节（102）沿轴向拼装形成箱型管道；单元板片（101）为向箱型管道外侧起拱的弧形波纹板，相邻单元板片（101）之间形成周向连接的钝角；该箱型管道截面近似矩形，且单元板片（101）采用圆弧形结构，箱型管道周向采用平直状法兰或角钢法兰（103）连接。

Description

具有周向钝角连接的箱型管道 技术领域
本发明公开了一种箱形管道，尤其涉及一种具有周向钝角连接的箱型管道。
背景技术
公路用钢质波形钢管道，截面形状一般是圆形、椭圆形、马蹄形或拱形等等，均采用圆弧形板片结构，从而在结构受力时利用管土共同受力原理，以保证整体结构的强度，无论组成单元管节的各单元板片是同一圆心，同一半径，还是有多个圆心、多种半径，其单元板片周向连接均采用圆弧过渡，而非采用通过板片与板片之间成钝角的连接方式连接。如图16～图18所示，截面形状一般是圆形、椭圆形、马蹄形或拱形等等的普通管道中普通圆弧过渡管涵内部净空利用率低，浪费空间大，并且其顶部弦高大，从而增加土方开挖量。然而在某些对管道内部净空利用率有特定要求的情况下，如城市地下综合管廊的廊体结构以及内部需通行车辆的涵洞，需使得截面为近似矩形的箱形，以保证管道的净空利用率，又要利用管土共同受力原理保证整体强度，还要施工便捷，加快施工进度，传统的截面形式以及连接方式就无法满足要求。
因此，亟待解决上述技术难题。
专利内容
专利目的：本发明的目的是提供管道内部净空及截面利用率最大化、管壁强度高、且可快速实现管道拼接、简化生产工序的具有周向钝角连接的箱型管道。
技术方案：本发明的具有周向钝角连接的箱型管道，包括由分别位于上、下和两侧面的单元板片沿周向拼装形成单元管节，该单元管节沿轴向拼装形成箱型管道；其中，所述单元板片为向箱型管道外侧起拱的弧形波纹板，相邻单元板片之间形成周向连接的钝角。
其中，所述单元板片沿周向拼接时，相邻单元板片的接触端部设有连接法兰，且相邻连接法兰为拼接连接面。相邻单元板片的周向连接部位采用非圆弧过渡连接形式、非直角连接形式，而是通过单元板片与单元板片之间成钝角的连接方式连接。
优选的，所述连接法兰为平直状法兰或角钢法兰。
进一步，所述角钢法兰包括一对L型板，该对L型板的一侧面相接触，另一侧面分别与相邻的单元板片相连接。
进一步，所述单元板片沿周向拼接时，相邻连接法兰之间通过周向连接结构连接，该周向连接结构包括自身弯折成一定角度的连接板，该连接板内侧设置加强筋，该加强筋与连接板之间形成三角式内腔。
再者，所述连接板弯折角为锐角。其利用了锐角连接板和加强筋组合所具有的优越承压能力，可以减少制造成本、实现标准化生产，并进一步增强整体结构的受力强度。
优选的，在所述连接板上开设用于周向连接的连接孔，该连接板与连接法兰通过螺栓相互连接，实现相邻单元板片之间的连接。在拼接过程中，周向连接结构能起到一定的定位作用，便于安装过程中相邻单元板片的周向连接，实现快速安装。
进一步，在所述连接板上开设用于灌注混凝土的流通孔。在该拼装式管道拼装完成后需浇筑混凝土时，为了实现各板片间的贯通以及混凝土的整体性，在连接板相应位置开设流通孔，以实现混凝土的流通以形成连续的空心腔体结构，拼装形成管节，进一步增强管道的竖向承压能力。
优选的，所述单元板片具有至少一种弧度。
再者，所述波纹板由金属板构成，该金属板自身弯折形成凸起；或金属板弯折形成凸起形状，用板材或管材与该凸起组合形成空心腔体结构；或由金属板和金属管拼接而成；或者由C型钢、槽钢、工字钢、弧形钢、角钢或波纹板与金属板扣合形成带有空心腔体结构。
进一步，在所述空心腔体内充填混凝土，或者在所述空心腔体内布置钢筋并充填混凝土。
优选的，在所述单元管节内壁设置用于布置管线或软管的钢筋、预埋件或挂钩。
再者，所述单元管节沿轴向拼接时，在相邻单元管节的轴向棱边处设有横跨相邻单元管节的刚性连接结构，该刚性连接结构包括一对相对扣合在单元管节棱边处的固定板。
该刚性连接结构可有效防止在实际工程中相邻单元轴向拼接时被拉变形或拉脱。
有益效果：与现有技术相比，本发明具有以下优点：
(1)该管道截面为近似矩形的箱形，管道净空利用率高；且单元板片采用圆弧形结构，利用管土共同受力原理，整体结构的强度与承受力最大化；
(2)本发明的单元板片的弧度，可以不受管道口径和跨度的限制，不同于圆形截面的拼装式钢波纹管，单元板片的弧度完全与管道的直径相关，而影响单元板片的波高 和波距的选择；
(3)本发明单元管节的四个钝角连接结构，解决了波纹板的波高较高时，卷圆直径不能太小的问题，四个连接角非圆弧过渡，则可以使用波高非常高的波纹板，大大提高了波纹板的惯性矩，使得管节的口径可以做得很大；
(4)该箱型管道周向采用平直状法兰或角钢法兰连接，每节长度可以做至10米以上，整体施工进度极大加快，尤其采用角钢法兰连接时，角部应力集中区受力情况得到极大的改善，避免连接法兰与单元板片单一焊接连接的形式在动载工况下焊缝开裂而造成管体结构破坏等现象；
(5)通过周向连接结构在安装管道时作为限位使用，防止顶板左右滑动，保证安装过程的安全性；
(6)在保障相同净空利用率及荷载条件下，板片与板片间无需通过圆弧过渡板连接，该管道的钢材厚度及截面弧长均可减少，节约成本，更有利于加快施工现场的施工进度，带来巨大的经济效益及社会效益。
附图说明
图1为本发明无需浇筑混凝土的周向连接结构的示意图；
图2为本发明需浇筑混凝土的周向连接结构的示意图；
图3为本发明中平直状法兰的结构示意图；
图4为本发明带周向连接结构的单元板片的结构示意图；
图5为本发明中带周向连接结构的箱型管道的截面示意图；
图6为本发明中带周向连接结构的箱型管道的结构示意图；
图7本发明中采用平直状法兰连接的单元板片的结构示意图；
图8为本发明中采用平直状法兰连接的箱型管道的结构示意图；
图9为图8的横截面示意图；
图10为平直状法兰连接时角部局部示意图；
图11为角钢法兰连接时角部局部示意图；
图12为现有技术中圆弧过渡连接形式的结构示意图；
图13为现有技术中直角过渡连接形式的结构示意图；
图14为本发明中钝角连接形式的受力示意图；
图15为本发明中单元管节轴向拼接时的结构示意图；
图16为现有技术中拱形管道的内部净空的结构示意图；
图17为现有技术中圆形管道的内部净空的结构示意图；
图18为现有技术中椭圆形管道的内部净空的结构示意图。
具体实施方式
下面结合附图对本发明的技术方案作进一步说明。
如图6和图8所示，本发明一种具有周向钝角连接的箱型管道，包括由分别位于上、下和两侧面的单元板片101沿周向拼装形成单元管节102，该单元管节102沿轴向拼装形成箱型管道；所述单元板片101为向箱型管道外侧起拱的弧形波纹板，其波纹纹路与箱型管道轴心相垂直，相邻单元板片101之间形成周向连接的钝角；其中，所述单元板片101沿周向拼接时，相邻单元板片101的接触端部设有连接法兰103，且相邻连接法兰103为拼接连接面，如图3所示，其中连接法兰103为平直状法兰或角钢法兰，在单元板片101和连接法兰103的周向拼接面上开设周向连接孔，并通过螺栓实现快速连接，安装便捷，极大提升施工进度，如图10所示。其中，如图7和图10所示，平直状法兰的法兰面与单元板片的弧面成一定角度。其中角钢法兰为L型板，该L型板的一侧面与单元板片101通过螺栓相互连接；其中，所述单元板片101沿周向拼接时，相邻L型板通过螺栓相互连接，如图11所示。该箱型管道周向采用平直状法兰或角钢法兰连接，整体施工进度极大加快，尤其采用角钢法兰连接时，角部应力集中区受力情况得到极大的改善，避免连接法兰与单元板片单一焊接连接的形式在动载工况下焊缝开裂而造成管体结构破坏等现象。
本发明中分别位于上、下和两侧面的单元板片101具有至少一种弧度，四块单元板片可为同一弧度的板片，亦可以为两种、三种或四种不同弧度的板片构成。其中，波纹板由金属板构成，该金属板自身弯折形成凸起；或金属板弯折形成凸起形状，用板材或管材与该凸起组合形成空心腔体结构；或由金属板和金属管拼接而成；或者由C型钢、槽钢、工字钢、弧形钢、角钢或波纹板与金属板扣合形成带有空心腔体结构。本发明可在上述空心腔体内充填混凝土，或者在所述空心腔体内布置钢筋并充填混凝土。本发明管道的波纹板的波纹高度值及截面惯性矩可以很高，避免了管道直径较小或圆弧过渡段的半径较小时，难以弯曲成所要求弧度的难题，从而也使得板片的弧度不再受管道口径和跨度的限制，为生产制造提供了了便利。
相邻单元板片的周向连接部位采用非圆弧过渡连接形式、非直角连接形式，而是通 过单元板片与单元板片之间成钝角的连接方式连接。
如图12所示，传统圆弧过渡连接形式对于制作加工工艺要求较高，且对相邻单元板片的圆弧一致性要求高，否则难以安装，更重要的是：当波纹高度较高，管道口径较小或圆弧过渡段的半径较小时，就难以弯曲成所要求的弧度，从而限制了大波高、大惯性矩波纹板的使用。并且圆弧过渡连接形式中管道受力方向为板片环向方向。如图13所示，直角连接形式无法运用管土共同受力原理，并且上部载荷通过连接处的传递全部由两侧立柱来承受，对立柱承载能力要求极高。
如图14所示，本发明的角度连接形式中各板片受力方向也为板片环向方向，但由于是钝角连接，非圆弧过渡连接，连接角部的受力方向，如图14所示，侧部回填土对顶板的挤压，使得连接角部处的侧板对顶板有较大的向上托举的分力，减轻顶部板片所受上部荷载压力。同样顶部板片的竖向压力，使得顶板在连接角部对侧板有较大侧向推力，减轻侧部板片所受侧部荷载压力，可见侧板荷载与顶部荷载在此种连接结构形式下，可相互抵消部分荷载，从而使得整体结构更趋于合理。
该管道截面为近似矩形的箱形，其管道净空利用率高，如图5和图9中虚线部分所示；其中单元板片采用圆弧形结构的拱状波纹板，在廊体土体回填后，周围回填土对廊体能形成很好的包裹作用，在整体结构受力上，周围土体与管道结构构成一个整体，因为板片在周向是圆弧形，利用管土共同受力原理，整体结构的强度与承受力最大化。
如图5和图6所示，上述单元板片101沿周向拼接时，相邻连接法兰103之间通过周向连接结构连接，该周向连接结构包括自身弯折成一定角度的连接板104，弯折角度为锐角，该连接板104内侧设置加强筋105，该加强筋105与连接板104之间形成三角式内腔。加强筋使得整体结构更加稳固，同时连接板还能起到一定的定位作用，便于安装过程中相邻单元板片的周向连接，实现快速安装。本发明利用了锐角连接板和加强筋组合所具有的优越承压能力，可以减少制造成本、实现标准化生产，并进一步增强整体结构的受力强度。如图4所示，上述单元板片101的的接触端部设有连接法兰103，该连接法兰103的为平直状法兰，且法兰面与单元板片的波纹面相垂直，即法兰面位于弧形单元板片的轴心线上，如图5所示。
如图1所示，本发明在连接板104上开设用于周向连接的连接孔106，同时在单元板片101和连接法兰103的周向拼接面上开设有周向连接孔，该周向连接孔与连接板103上的连接孔106通过螺栓实现相邻单元板片之间的连接。
如图2所示，在连接板104上开设用于灌注混凝土的流通孔107。在该拼装式管廊拼装完成后需浇筑混凝土时，为了实现各板片间的贯通以及混凝土的整体性，在连接板相应位置开设流通孔，以实现混凝土的流通以形成连续的空心腔体结构，拼装形成管节，进一步增强管廊的竖向承压能力。
本发明在所述单元管节102内壁设置钢筋、预埋件或挂钩，以便后期内部排布管线或软管。
如图15所示，本发明中单元管节102沿轴向拼接时，在相邻单元管节的轴向棱边处设有横跨相邻单元管节的刚性连接结构，该刚性连接结构包括一对相对扣合在单元管节棱边处的固定板108。该刚性连接结构可有效防止在实际工程中相邻单元轴向拼接时被拉变形或拉脱。
本发明有以下用途：城市地下综合管廊、涵洞、地铁隧道、地下集水管、供水管或排水管、海水管道或其他输送特殊介质的管道。

Claims (13)

  1. 一种具有周向钝角连接的箱型管道，其特征在于：包括由分别位于上、下和两侧面的单元板片(101)沿周向拼装形成单元管节(102)，该单元管节(102)沿轴向拼装形成箱型管道；其中，所述单元板片(101)为向箱型管道外侧起拱的弧形波纹板，相邻单元板片(101)之间形成周向连接的钝角。
  2. 根据权利要求1所述的具有周向钝角连接的箱型管道，其特征在于：所述单元板片(101)沿周向拼接时，相邻单元板片(101)的接触端部设有连接法兰(103)，且相邻连接法兰(103)为拼接连接面。
  3. 根据权利要求2所述的具有周向钝角连接的箱型管道，其特征在于：所述连接法兰(103)为平直状法兰或角钢法兰。
  4. 根据权利要求3所述的具有周向钝角连接的箱型管道，其特征在于：所述角钢法兰包括一对L型板，该对L型板的一侧面相接触，另一侧面分别与相邻的单元板片(101)相连接。
  5. 根据权利要求2所述的具有周向钝角连接的箱型管道，其特征在于：所述单元板片(101)沿周向拼接时，相邻连接法兰(103)之间通过周向连接结构连接，该周向连接结构包括自身弯折成一定角度的连接板(104)，该连接板(104)内侧设置加强筋(105)，该加强筋(105)与连接板(104)之间形成三角式内腔。
  6. 根据权利要求5所述的具有周向钝角连接的箱型管道，其特征在于：所述连接板(104)弯折角为锐角。
  7. 根据权利要求5所述的具有周向钝角连接的箱型管道，其特征在于：在所述连接板(104)上开设用于周向连接的连接孔(106)，该连接板(103)与连接法兰(103)相互连接。
  8. 根据权利要求5所述的具有周向钝角连接的箱型管道，其特征在于：在所述连接板(104)上开设用于灌注混凝土的流通孔(107)。
  9. 根据权利要求1所述的具有周向钝角连接的箱型管道，其特征在于：所述单元板片(101)具有至少一种弧度。
  10. 根据权利要求1所述的具有周向钝角连接的箱型管道，其特征在于：所述波纹板由金属板构成，该金属板自身弯折形成凸起；或金属板弯折形成凸起形状，用板材或管材与该凸起组合形成空心腔体结构；或由金属板和金属管拼接而成；或者由C型钢、槽钢、工字钢、弧形钢、角钢或波纹板与金属板扣合形成带有空心腔体结构。
  11. 根据权利要求10所述的具有周向钝角连接的箱型管道，其特征在于：在所述空心腔体内充填混凝土，或者在所述空心腔体内布置钢筋并充填混凝土。
  12. 根据权利要求1所述的具有周向钝角连接的箱型管道，其特征在于：在所述单元管节(102)内壁设置用于布置管线或软管的钢筋、预埋件或挂钩。
  13. 根据权利要求1所述的具有周向钝角连接的箱型管道，其特征在于：所述单元管节(102)沿轴向拼接时，在相邻单元管节(102)的轴向棱边处设有横跨相邻单元管节的刚性连接结构，该刚性连接结构包括一对相对扣合在单元管节棱边处的固定板(108)。
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