WO2022156109A1 - 一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法 - Google Patents

一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法 Download PDF

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Publication number
WO2022156109A1
WO2022156109A1 PCT/CN2021/096699 CN2021096699W WO2022156109A1 WO 2022156109 A1 WO2022156109 A1 WO 2022156109A1 CN 2021096699 W CN2021096699 W CN 2021096699W WO 2022156109 A1 WO2022156109 A1 WO 2022156109A1
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Prior art keywords
main body
small
longitudinal beam
beam structure
steel plate
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PCT/CN2021/096699
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English (en)
French (fr)
Inventor
陈康明
吴庆雄
袁辉辉
杨益伦
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福州大学
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Publication of WO2022156109A1 publication Critical patent/WO2022156109A1/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
    • E01D11/00—Suspension or cable-stayed bridges
    • E01D11/02—Suspension bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D4/00—Arch-type bridges

Definitions

  • the invention belongs to the technical field of bridge engineering, and in particular relates to a stiffened longitudinal beam structure and a construction method for enhancing the robustness of a mid-supported arch bridge suspension bridge track system.
  • the design of the suspension bridge system of mid-support arch bridges in my country is not based on stiffening the longitudinal beams, but on the beams.
  • the suspension rods are also anchored at both ends of the beams, and then the bridge decks are laid on the beams. There are no stiffening stringers between the beams.
  • its suspension bridge road system has many diseases, such as excessive bridge deck vibration, serious bridge deck damage, falling off of supports, etc., which have occurred one after another in recent years. There have been many serious accidents in which the bridge deck collapsed due to the accidental rupture of the boom, and even the entire bridge collapsed, resulting in irreparable economic losses.
  • the patent publication number is CN111945541A, and the Chinese invention patent with the publication date of 2020.11.17 discloses a middle-supported tied arch bridge, including piers, supports, the first steel box main arch rib, the second steel box main arch rib, The first steel box auxiliary arch rib, the second steel box auxiliary arch rib, the arch beam joint, the balance arch, the main beam, the main arch, the arch rib connecting piece and the transverse connecting piece, two are symmetrically arranged on the pier column, and the main arch is symmetrical Set on the pier column, one end of the main arch rib of the first steel box is connected with one of the main arches on one of the pier columns, and the other end of the main arch rib of the first steel box is connected with the corresponding main arch on the other pier column.
  • the two ends of the secondary arch rib of the first steel box are correspondingly arranged at both ends of the main arch rib of the first steel box, and the secondary arch rib of the first steel box and the main arch rib of the first steel box are connected by an arch rib connecting piece,
  • the main arch ribs of the two steel boxes are connected to the corresponding main arch on one of the piers.
  • the mid-support tie-rod arch bridge in this invention patent has the problems of unreasonable structural stress and poor overall durability.
  • the purpose of the present invention is to provide a stiffened longitudinal beam structure and a construction method for enhancing the robustness of the suspension bridge system of a mid-support arch bridge.
  • the method of anchoring the steel plate unit realizes the effect of installing a stiffened longitudinal beam structure between the two beams.
  • the invention has the advantages of light weight, high rigidity and easy connection of the steel structure stiffened longitudinal beam, the overall stiffness and stability of the suspension bridge track system are greatly improved, the inconsistent deformation of the bridge deck and the stiffened longitudinal beam due to temperature changes can be fully released, and the length of the suspension bridge can be fully released. It can withstand the impact force generated by the breakage of the suspension rod and enhance the robustness of the suspension bridge system, which can effectively avoid the occurrence of major accidents and has good economic value and social effect.
  • a stiffened longitudinal beam structure for enhancing the robustness of the suspension bridge system of a mid-support arch bridge, comprising large pipe units and small pipe units that are sleeved with each other, and The unit and the outer end of the small tube unit are used to connect the two anchoring steel plate units of the beam.
  • the large pipe unit includes a large pipe main body, and a baffle plate disposed at one end of the large pipe main body and used to fit the small pipe unit;
  • the small pipe unit includes one end inserted into the large pipe main body And the small tube body with the outer ring surface attached to the baffle plate, and the anti-dropping steel plate arranged on the insertion end of the small tube body and attached to the inner ring surface of the large tube body.
  • the large pipe unit further includes an outer annular stiffening plate arranged on the outer side of the baffle plate and the outer annular surface of the large pipe main body, and a plurality of outer annular stiffening plates arranged on the outer annular stiffening plate.
  • the small tube unit further includes an inner annular stiffening plate arranged on the inner annular surface of the small tube main body, and the inner annular To the inner longitudinal stiffening plate between the stiffening plate and the anti-shedding steel plate.
  • a further preferred technical solution is that: the inner annular surface of the main body of the large tube and the outer annular surface of the main body of the small tube are provided with a coating for friction during insertion.
  • a further preferred technical solution is that: a support pipe unit is further provided inside the large pipe main body and outside the small pipe main body and between the baffle plate and the anti-falling-off steel plate.
  • the support pipe unit includes an elastic ring sleeved between the large pipe main body and the small pipe main body, two support pipe main bodies disposed on both sides of the elastic ring respectively, and two support pipe main bodies disposed on both sides of the elastic ring.
  • the opposite outer sides of the two support tube bodies are respectively used to push up the support tube bodies on the baffle plate and the compression springs of the support tube bodies from the anti-falling steel plate.
  • the thickness of the support pipe body is 90-95% of the distance between the inner ring surface of the large pipe body and the outer ring surface of the small pipe body, and the length of the support pipe body is the 35-48% of the insertion length of the large pipe body and the small pipe body.
  • a further preferred technical solution is that the insertion length of the large pipe main body and the small pipe main body is greater than twice the outer diameter of the large pipe main body.
  • the anchoring steel plate unit includes an anchoring steel plate main body arranged on the relatively remote end of the large pipe main body or the small pipe main body, which is arranged on the anchoring steel plate main body and is used for connecting the large pipe main body Or the stiffening steel plate on the outer annular surface of the main body of the small tube, and the screw holes provided on the main body of the anchoring steel plate and used for inserting the threaded steel bars of the beams or the screws of the beams.
  • a construction method for a stiffened longitudinal beam structure for enhancing the robustness of a suspension bridge track system of a mid-support arch bridge comprising the following steps in sequence:
  • the invention realizes the effect of installing a stiffened longitudinal beam structure between the two beams by splicing the large pipe unit and the small pipe unit with each other, inserting the supporting pipe unit, and installing the anchoring steel plate unit.
  • the invention has the advantages of light weight, high rigidity and easy connection of the steel structure stiffened longitudinal beam, the overall stiffness and stability of the suspension bridge track system are greatly improved, the inconsistent deformation of the bridge deck and the stiffened longitudinal beam due to temperature changes can be fully released, and the length of the suspension bridge can be fully released. It can withstand the impact force generated by the breakage of the suspension rod and enhance the robustness of the suspension bridge system, which can effectively avoid the occurrence of major accidents and has good economic value and social effect.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • FIG. 2 is a schematic structural diagram of the socketed position of the large pipe unit and the small pipe unit in the present invention.
  • FIG. 3 is a schematic diagram of the position structure of the anchoring steel plate unit in the present invention.
  • FIG. 4 is a schematic diagram of the use of the stiffened longitudinal beam structure in the present invention.
  • hanger rods 13 are installed at both ends of the beam 11 according to the prior art to support the bridge deck 12 , and the stiffening longitudinal beam structure is arranged between the beams 11 for supporting the bridge deck 12 . It ensures that the entire suspension bridge track system has greater robustness, and has the advantages of high rigidity and high stability.
  • the large tube unit 1 and the small tube unit 2 are sleeved with each other and are the main body of the stiffening longitudinal beam structure, so that the stiffening longitudinal beam structure: first, has sufficient longitudinal strength; second, allows proper
  • the longitudinal deformation of the suspension bridge finally increases the bending stiffness of the bridge system, and can withstand the impact force generated by the breakage of the suspension rod 13 at a certain length, and enhances the robustness of the suspension bridge system, while the anchoring steel plate unit 3 is to strengthen
  • the installation position between the longitudinal beam structure and the cross beam 11 ensures that the two ends of the stiffening longitudinal beam structure are installed stably and are not easy to fall off.
  • the large pipe unit 1 includes a large pipe main body 101 and a baffle plate 102 disposed at one end of the large pipe main body 101 and used to fit the small pipe unit 2; the small pipe unit 2 includes one end inserted into the large pipe main body 101
  • the small tube body 201 with the outer ring surface attached to the baffle 102 , and the anti-falling steel plate 202 disposed on the insertion end of the small tube body 201 and attached to the inner ring surface of the large tube body 101 .
  • the anti-shedding steel plate 202 is pre-welded with the large pipe body 101 as a whole, and then inserted into the large pipe main body 101 , and finally the baffle plate 102 is welded and fixed on the large pipe main body 101 In this way, an overall structure of "large inside and small outside" is formed to achieve the above-mentioned anti-shedding effect.
  • the baffle 102 can be an entire ring, or can be an arc-shaped block with inner and outer arc surfaces, to ensure that the small tube body 201 and the anti-falling steel plate 202 as a whole will not pass through the large tube body 101. Just drop it.
  • the large pipe body 101 and the small pipe body 201 may be round steel pipes, square steel pipes or triangular steel pipes.
  • the large pipe unit 1 further includes an outer annular stiffening plate 103 disposed on the outer side of the baffle 102 and the outer annular surface of the large pipe main body 101 , and disposed between a plurality of the outer annular stiffening plates 103 .
  • the outer longitudinal stiffening plate 104; the small tube unit 2 also includes an inner circumferential stiffening plate 203 arranged on the inner annular surface of the small tube body 201, and a plurality of inner circumferential stiffening plates 203, all The inner longitudinal stiffening plate 204 between the inner annular stiffening plate 203 and the anti-falling-off steel plate 202 is formed.
  • the structures formed by the outer annular stiffening plate 103 and the outer longitudinal stiffening plate 104, and the inner annular stiffening plate 203 and the inner longitudinal stiffening plate 204 are all for the same purpose, all of which are to improve the
  • the circumferential structural strength and longitudinal structural strength of the nozzles of the large pipe main body 101 and the small pipe main body 201 make it difficult for the two nozzle positions to be deformed when the socket position is subjected to force and bends downward, ensuring the rigidity of the stiffening longitudinal beam structure.
  • the inner ring surface of the large pipe body 101 and the outer ring surface of the small pipe body 201 are provided with a coating 4 for friction during insertion.
  • the material of the coating 4 is the existing anti-rust, wear-resistant and lubricating coating to ensure that the steel structure stiffened longitudinal beam can freely expand and contract longitudinally under the influence of temperature changes.
  • a support pipe unit 5 is also provided on the inner side of the large pipe main body 101 and the outer side of the small pipe main body 201 and between the baffle plate 102 and the anti-falling steel plate 202 .
  • the support tube unit 5 includes an elastic ring 501 sleeved between the large tube main body 101 and the small tube main body 201, two support tube main bodies 502 disposed on both sides of the elastic ring 501 respectively, and two support tube main bodies 502 disposed on the two sides. Two opposite outer sides of the support tube body 502 and are respectively used to push up the support tube body 502 on the baffle 102 and the compression springs that push the support tube body 502 from the anti-falling steel plate 202 503.
  • the thickness of the support tube body 502 is 90-95% of the distance between the inner ring surface of the large tube body 101 and the outer ring surface of the small tube body 201 , and the length of the support tube body 502 is the length of the large tube body 101 is 35-48% of the length of plugging with the small tube body 201 .
  • the stiffened longitudinal beam structure will have two deformation situations, the first is the overall expansion and contraction with the change of temperature, and the second is the downward bending deformation due to the pressure, the latter is described in the deformation
  • the "hollow section" between the baffle 102 and the anti-falling steel plate 202 will appear insufficient in strength, so the support pipe unit 5 is introduced to ensure the insertion of the large pipe main body 101 and the small pipe main body 201.
  • the connecting structure can have a sufficient allowable range of downward bending deformation, and will not bend and break.
  • the steel pipe supporting the main body 502, the elastic ring 501 are made of existing high-strength engineering plastics, and the compression spring 503 is an existing high-strength steel spring.
  • the insertion length of the large pipe main body 101 and the small pipe main body 201 is greater than twice the outer diameter of the large pipe main body 101 .
  • the insertion length is sufficient and suitable, and the stability of the insertion structure and sufficient bending allowance can be ensured in combination with the anti-dropping steel plate 202 of suitable size.
  • the anchoring steel plate unit 3 includes an anchoring steel plate main body 301 arranged on the relatively distant end of the large pipe main body 101 or the small pipe main body 201, which is arranged on the anchoring steel plate main body 301 and is used to connect the large pipe main body 101 or the small pipe main body 201.
  • the beam threaded steel bar can be fixed on the beam 11 made of concrete, or can be inserted into the reserved holes of the beam 11, and finally cooperate with a tightening nut to ensure the anchoring steel plate body 301 High-strength fixation on the beam 11 .
  • a construction method for a stiffened longitudinal beam structure for enhancing the robustness of a suspension bridge track system of a mid-support arch bridge comprising the following steps in sequence:
  • the unmentioned parts in the construction method of the stiffened longitudinal beam structure are all carried out in the manner of the prior art, so as to ensure that the stiffened longitudinal beam structure is finally obtained.

Abstract

一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法。通过将大管单元（1）和小管单元（2）相互套接，并插入支撑管单元（5）、安装锚固钢板单元（3）的方式，实现两个横梁（11）之间安装加劲纵梁结构的效果。其具有钢结构加劲纵梁重量轻、刚度大、易连接，悬吊桥道系整体刚度和稳定性大大提高，可以充分释放桥面与加劲纵梁因温度变化产生的不一致变形，可以在一定长度上承受吊杆断裂产生的冲击力，以及增强悬吊桥道系强健性的优点，可有效避免重大事故的发生，具有良好的经济价值和社会效应。

Description

一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法 技术领域
本发明属于桥梁工程技术领域，尤其涉及一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法。
 背景技术
目前我国的中承式拱桥悬吊桥道系的设计并不是以加劲纵梁受力为主，而是以横梁受力为主，吊杆也是锚固在横梁两端，然后在横梁上铺设桥面板，大多数横梁之间没有设置加劲纵梁。已建的中承式拱桥经过数年的运营使用后，其悬吊桥道系出现较多的病害，如桥面振动过大、桥面破损严重、支座脱落等，且近几年来已相继发生了多起因吊杆意外断裂而导致桥面坍塌，甚至整座桥梁垮塌的严重事故，造成了无可挽回的经济损失。
自新疆库尔勒孔雀河、宜宾小南门大桥等发生吊杆断裂出现落梁事故以来，许多学者就如何提高悬吊桥道系的安全系数这一课题展开了深入研究，研究大多集中在吊杆安全性能上，提出改善吊杆布置形式，以确保吊杆的安全工作。但是由于悬吊桥道系本身缺乏足够刚度、吊杆的施工问题以及超载现象严重等原因，悬吊桥道系中的吊杆仍然存在严重的安全隐患，如锚头变形与锈蚀、护套开裂、索体锈蚀、应力腐蚀等，以致吊杆突然断裂的可能性还是存在的。
因此，有必要设计一种自重较轻、结构受力合理、施工便捷、耐久性能优良、经济实用性强的增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法，能有效解决中承式拱桥悬吊式桥道系整体刚度不足和稳定性较差的问题，且在一定长度可以承受吊杆断裂产生的冲击力，能增强悬吊桥道系的强健性。
专利公开号为CN111945541A，公开日为2020.11.17的中国发明专利公开了一种中承式系杆拱桥，包括墩柱、支座、第一钢箱主拱肋、第二钢箱主拱肋、第一钢箱副拱肋、第二钢箱副拱肋、拱梁结合件、平衡拱、主梁、主拱、拱肋连接件和横向连接件，墩柱对称设有两个，主拱对称设置在墩柱上，第一钢箱主拱肋的一端和其中一个墩柱上的其中一个主拱连接，第一钢箱主拱肋的另一端和另一个墩柱上的对应的主拱连接，第一钢箱副拱肋的两端对应设置在第一钢箱主拱肋的两端，第一钢箱副拱肋和第一钢箱主拱肋之间通过拱肋连接件连接，第二钢箱主拱肋和其中一个墩柱上的对应的主拱连接。
但是该发明专利中的中承式系杆拱桥，存在结构受力不合理，以及整体耐久性差的问题。
 技术解决方案
本发明的目的是提供一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法，其能通过将大管单元和小管单元相互套接，并插入支撑管单元、安装锚固钢板单元的方式，实现两个横梁之间安装加劲纵梁结构的效果。本发明具有钢结构加劲纵梁重量轻、刚度大、易连接，悬吊桥道系整体刚度和稳定性大大提高，可以充分释放桥面与加劲纵梁因温度变化产生的不一致变形，可以在一定长度上承受吊杆断裂产生的冲击力，以及增强悬吊桥道系强健性的优点，可有效避免重大事故的发生，具有良好的经济价值和社会效应。
本发明解决上述问题采用的技术方案是：一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，包括相互套接的大管单元，小管单元，以及分别设置在所述大管单元和所述小管单元的外侧端上并用于连接横梁的两个锚固钢板单元。
进一步优选的技术方案在于：所述大管单元包括大管主体，以及设置在所述大管主体一端并用于贴合所述小管单元的挡板；所述小管单元包括一端插入所述大管主体且外环面与所述挡板贴合的小管主体，以及设置在所述小管主体插入端上并贴合所述大管主体内环面的防脱落钢板。
进一步优选的技术方案在于：所述大管单元还包括设置在所述挡板外侧、所述大管主体外环面上的外环向加劲板，以及设置在若干个所述外环向加劲板之间的外纵向加劲板；所述小管单元还包括设置在所述小管主体内环面上的内环向加劲板，以及设置在若干个所述内环向加劲板之间、所述内环向加劲板和所述防脱落钢板之间的内纵向加劲板。
进一步优选的技术方案在于：所述大管主体内环面以及小管主体外环面上设有用于插接时摩擦的涂层。
进一步优选的技术方案在于：所述大管主体内侧、所述小管主体外侧且位于所述挡板和所述防脱落钢板之间还设有支撑管单元。
进一步优选的技术方案在于：所述支撑管单元包括套在所述大管主体和所述小管主体之间的弹性环，分别设置在所述弹性环两侧的两个支撑管主体，以及设置在两个所述支撑管主体的相对外侧并分别用于在所述挡板上顶起所述支撑管主体、在所述防脱落钢板上顶起所述支撑管主体的受压弹簧。
进一步优选的技术方案在于：所述支撑管主体的厚度为所述大管主体内环面与所述小管主体外环面之间距离的90-95%，所述支撑管主体的长度为所述大管主体与所述小管主体插接长度的35-48%。
进一步优选的技术方案在于：所述大管主体与所述小管主体的插接长度大于所述大管主体外径的2倍。
进一步优选的技术方案在于：所述锚固钢板单元包括设置在所述大管主体或所述小管主体相对远离端上的锚固钢板主体，设置在所述锚固钢板主体上并用于连接所述大管主体或所述小管主体外环面的加劲钢板，以及设置在所述锚固钢板主体上并用于插入横梁螺纹钢筋或横梁螺杆的螺孔。
一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构的施工方法，依次包括以下步骤：
S1、将所述小管主体、防脱落钢板、内环向加劲板以及内纵向加劲板焊接成整体，并在所述小管主体内环面涂覆所述涂层，得到所述小管单元；
S2、在所述大管主体内环面先涂覆所述涂层，再依次插入所述小管单元和所述支撑管单元，得到加劲纵梁结构基体；
S3、在所述大管主体上焊接所述挡板、外环向加劲板以及外纵向加劲板，得到加劲纵梁结构主体；
S4、在所述小管主体和大管主体的两端分别焊接所述锚固钢板单元，得到最终的所述加劲纵梁结构，
S5、将所述加劲纵梁结构与所述横梁通过栓焊组合的方式连接安装，完成整个施工操作。
 有益效果
本发明通过将大管单元和小管单元相互套接，并插入支撑管单元、安装锚固钢板单元的方式，实现两个横梁之间安装加劲纵梁结构的效果。本发明具有钢结构加劲纵梁重量轻、刚度大、易连接，悬吊桥道系整体刚度和稳定性大大提高，可以充分释放桥面与加劲纵梁因温度变化产生的不一致变形，可以在一定长度上承受吊杆断裂产生的冲击力，以及增强悬吊桥道系强健性的优点，可有效避免重大事故的发生，具有良好的经济价值和社会效应。
 附图说明
图1为本发明的结构示意图。
图2为本发明中大管单元和小管单元套接位置的结构示意图。
图3为本发明中锚固钢板单元的位置结构示意图。
图4为本发明中加劲纵梁结构的使用示意图。
 本发明的实施方式
以下所述仅为本发明的较佳实施例，并非对本发明的范围进行限定。
实施例：如附图1、2、3以及附图4所示，一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，包括相互套接的大管单元1，小管单元2，以及分别设置在所述大管单元1和所述小管单元2的外侧端上并用于连接横梁11的两个锚固钢板单元3。
在本实施例中，所述横梁11按照现有技术的方式两端安装吊杆13，用于支持桥面板12，而所述加劲纵梁结构设置在两两所述横梁11之间，用于保证整个悬吊桥道系具有较大的强健性，具有刚度大、稳定性高的优点。
其中，所述大管单元1和所述小管单元2相互套接，是所述加劲纵梁结构的主体，使得所述加劲纵梁结构：第一，具有足够的纵向强度；第二，允许适当的纵向形变，最终增大桥道系的抗弯刚度，并在一定长度可承受所述吊杆13断裂产生的冲击力，增强悬吊桥道系的强健性，而所述锚固钢板单元3则是加劲纵梁结构与所述横梁11之间的安装部位，保证所述加劲纵梁结构两端安装稳固、不易脱落。
所述大管单元1包括大管主体101，以及设置在所述大管主体101一端并用于贴合所述小管单元2的挡板102；所述小管单元2包括一端插入所述大管主体101且外环面与所述挡板102贴合的小管主体201，以及设置在所述小管主体201插入端上并贴合所述大管主体101内环面的防脱落钢板202。
在本实施例中，所述防脱落钢板202预先与所述大管主体101焊接成整体，再插入所述大管主体101，最后是所述挡板102焊接固定在所述大管主体101上，这样形成“内大外小”的整体结构，以实现上述防脱落效果。
其中，所述挡板102可以为一整个圆环，也可以是具有内外弧形面的弧形块，保证所述小管主体201、防脱落钢板202这个整体不会从所述大管主体101内掉落即可。
此外，所述大管主体101以及小管主体201可以是圆形钢管、方形钢管或者三角形钢管。
所述大管单元1还包括设置在所述挡板102外侧、所述大管主体101外环面上的外环向加劲板103，以及设置在若干个所述外环向加劲板103之间的外纵向加劲板104；所述小管单元2还包括设置在所述小管主体201内环面上的内环向加劲板203，以及设置在若干个所述内环向加劲板203之间、所述内环向加劲板203和所述防脱落钢板202之间的内纵向加劲板204。
在本实施例中，所述外环向加劲板103与外纵向加劲板104、内环向加劲板203与内纵向加劲板204各自组成的结构，目的都是相同的，都是为了提高所述大管主体101、小管主体201管口的环向结构强度和纵向结构强度，使得该套接位置受力而向下弯曲时，两个管口位置都不易变形，保证所述加劲纵梁结构的整体结构刚度。
所述大管主体101内环面以及小管主体201外环面上设有用于插接时摩擦的涂层4。
在本实施例中，所述涂层4的材质为现有防锈、耐磨、润滑涂层，确保钢结构加劲纵梁在温度变化影响下纵向自由伸缩。
所述大管主体101内侧、所述小管主体201外侧且位于所述挡板102和所述防脱落钢板202之间还设有支撑管单元5。所述支撑管单元5包括套在所述大管主体101和所述小管主体201之间的弹性环501，分别设置在所述弹性环501两侧的两个支撑管主体502，以及设置在两个所述支撑管主体502的相对外侧并分别用于在所述挡板102上顶起所述支撑管主体502、在所述防脱落钢板202上顶起所述支撑管主体502的受压弹簧503。所述支撑管主体502的厚度为所述大管主体101内环面与所述小管主体201外环面之间距离的90-95%，所述支撑管主体502的长度为所述大管主体101与所述小管主体201插接长度的35-48%。
在本实施例中，所述加劲纵梁结构会有两种变形情况，第一是随温度的变化而发生整体伸缩，第二是因为受压而向下弯曲变形，后者在变形时所述挡板102和所述防脱落钢板202之间的这段“中空段”就会显得强度不足，因此引入所述支撑管单元5，保证所述大管主体101和所述小管主体201的这个插接结构可以具有足够的向下弯曲形变允许范围，而且也不至于弯曲断裂。
其中，所述支撑管主体502的钢管，所述弹性环501的材质为现有高强度工程塑料，所述受压弹簧503为现有高强度钢制弹簧。
所述大管主体101与所述小管主体201的插接长度大于所述大管主体101外径的2倍。
在本实施例中，所述插接长度足够且适宜，配合适宜尺寸的所述防脱落钢板202，可以保证上述插接结构的稳定性和足够的弯曲余量。
所述锚固钢板单元3包括设置在所述大管主体101或所述小管主体201相对远离端上的锚固钢板主体301，设置在所述锚固钢板主体301上并用于连接所述大管主体101或所述小管主体201外环面的加劲钢板302，以及设置在所述锚固钢板主体301上并用于插入横梁螺纹钢筋或横梁螺杆的螺孔303。
在本实施例中，所述横梁螺纹钢筋可以固定在混凝土材质的所述横梁11上，也可以插入所述横梁11的预留孔中，最后配合紧固螺母，可以保证所述锚固钢板主体301在所述横梁11上高强度固定。
一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构的施工方法，依次包括以下步骤：
S1、将所述小管主体201、防脱落钢板202、内环向加劲板203以及内纵向加劲板204焊接成整体，并在所述小管主体201内环面涂覆所述涂层4，得到所述小管单元2；
S2、在所述大管主体101内环面先涂覆所述涂层4，再依次插入所述小管单元2和所述支撑管单元5，得到加劲纵梁结构基体；
S3、在所述大管主体101上焊接所述挡板102、外环向加劲板103以及外纵向加劲板104，得到加劲纵梁结构主体；
S4、在所述小管主体201和大管主体101的两端分别焊接所述锚固钢板单元3，得到最终的所述加劲纵梁结构，
S5、将所述加劲纵梁结构与所述横梁11通过栓焊组合的方式连接安装，完成整个施工操作。
在本实施例中，所述加劲纵梁结构施工方法中的未提及部分，均按现有技术的方式进行，保证最终得到所述加劲纵梁结构即可。
上面结合附图对本发明的实施方式作了详细说明，但是本发明不限于上述实施方式，在所述技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下做出各种修改。这些都是不具有创造性的修改，只要在本发明的权利要求范围内都受到专利法的保护。

Claims (10)

  1. 一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：包括相互套接的大管单元（1），小管单元（2），以及分别设置在所述大管单元（1）和所述小管单元（2）的外侧端上并用于连接横梁（11）的两个锚固钢板单元（3）。
  2. 根据权利要求1所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述大管单元（1）包括大管主体（101），以及设置在所述大管主体（101）一端并用于贴合所述小管单元（2）的挡板（102）；所述小管单元（2）包括一端插入所述大管主体（101）且外环面与所述挡板（102）贴合的小管主体（201），以及设置在所述小管主体（201）插入端上并贴合所述大管主体（101）内环面的防脱落钢板（202）。
  3. 根据权利要求2所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述大管单元（1）还包括设置在所述挡板（102）外侧、所述大管主体（101）外环面上的外环向加劲板（103），以及设置在若干个所述外环向加劲板（103）之间的外纵向加劲板（104）；所述小管单元（2）还包括设置在所述小管主体（201）内环面上的内环向加劲板（203），以及设置在若干个所述内环向加劲板（203）之间、所述内环向加劲板（203）和所述防脱落钢板（202）之间的内纵向加劲板（204）。
  4. 根据权利要求2所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述大管主体（101）内环面以及小管主体（201）外环面上设有用于插接时摩擦的涂层（4）。
  5. 根据权利要求2所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述大管主体（101）内侧、所述小管主体（201）外侧且位于所述挡板（102）和所述防脱落钢板（202）之间还设有支撑管单元（5）。
  6. 根据权利要求5所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述支撑管单元（5）包括套在所述大管主体（101）和所述小管主体（201）之间的弹性环（501），分别设置在所述弹性环（501）两侧的两个支撑管主体（502），以及设置在两个所述支撑管主体（502）的相对外侧并分别用于在所述挡板（102）上顶起所述支撑管主体（502）、在所述防脱落钢板（202）上顶起所述支撑管主体（502）的受压弹簧（503）。
  7. 根据权利要求6所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述支撑管主体（502）的厚度为所述大管主体（101）内环面与所述小管主体（201）外环面之间距离的90-95%，所述支撑管主体（502）的长度为所述大管主体（101）与所述小管主体（201）插接长度的35-48%。
  8. 根据权利要求2所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述大管主体（101）与所述小管主体（201）的插接长度大于所述大管主体（101）外径的2倍。
  9. 根据权利要求2所述的一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构，其特征在于：所述锚固钢板单元（3）包括设置在所述大管主体（101）或所述小管主体（201）相对远离端上的锚固钢板主体（301），设置在所述锚固钢板主体（301）上并用于连接所述大管主体（101）或所述小管主体（201）外环面的加劲钢板（302），以及设置在所述锚固钢板主体（301）上并用于插入横梁螺纹钢筋或横梁螺杆的螺孔（303）。
  10. 一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构的施工方法，其特征在于依次包括以下步骤：
    S1、将所述小管主体（201）、防脱落钢板（202）、内环向加劲板（203）以及内纵向加劲板（204）焊接成整体，并在所述小管主体（201）内环面涂覆所述涂层（4），得到所述小管单元（2）；
    S2、在所述大管主体（101）内环面先涂覆所述涂层（4），再依次插入所述小管单元（2）和所述支撑管单元（5），得到加劲纵梁结构基体；
    S3、在所述大管主体（101）上焊接所述挡板（102）、外环向加劲板（103）以及外纵向加劲板（104），得到加劲纵梁结构主体；
    S4、在所述小管主体（201）和大管主体（101）的两端分别焊接所述锚固钢板单元（3），得到最终的所述加劲纵梁结构，
    S5、将所述加劲纵梁结构与所述横梁（11）通过栓焊组合的方式连接安装，完成整个施工操作。
PCT/CN2021/096699 2021-01-21 2021-05-28 一种增强中承式拱桥悬吊桥道系强健性的加劲纵梁结构及其施工方法 WO2022156109A1 (zh)

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