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WO2021098112A1 - Fork-type suspender anchoring structure - Google Patents

Fork-type suspender anchoring structure Download PDF

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Publication number
WO2021098112A1
WO2021098112A1 PCT/CN2020/081603 CN2020081603W WO2021098112A1 WO 2021098112 A1 WO2021098112 A1 WO 2021098112A1 CN 2020081603 W CN2020081603 W CN 2020081603W WO 2021098112 A1 WO2021098112 A1 WO 2021098112A1
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WIPO (PCT)
Prior art keywords
stainless steel
shear
anchoring structure
layer
pull
Prior art date
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Ceased
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PCT/CN2020/081603
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French (fr)
Chinese (zh)
Inventor
姜瑞娟
吴启明
陈宜言
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Municipal Design and Research Institute Co Ltd
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Shenzhen Municipal Design and Research Institute Co Ltd
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Publication of WO2021098112A1 publication Critical patent/WO2021098112A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • 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

Definitions

  • the invention relates to the technical field of boom arch bridge engineering, in particular to a fork lug type boom anchoring structure.
  • the hanger anchor heads used in the existing hanger arch bridges are usually located in the beams under the bridge deck, and routine inspection, maintenance and maintenance are difficult. For this reason, a fork lug type boom design scheme that moves the anchor head of the boom to the bridge surface appears.
  • the anchor on the bridge surface is composed of fork lugs, pins, tie rods or lug plates.
  • the deck system of the existing suspender arch bridge usually adopts a vertical and horizontal beam grid system, in which the cross beam is responsible for transmitting the constant and live load from the bridge deck to the suspender, so it bears the anchoring force of the suspender.
  • the bridge deck is not The waist beam is designed and cannot withstand upward pulling force.
  • the purpose of the present invention is to provide a fork lug type hanger rod anchoring structure, which is a new type of anchor connection structure used for the transformation of the old bridge fork lug type hanger rod to solve the problem of the fork lug type anchor on the bridge deck and the existing beam anchoring area
  • the connection problem improves the reliability and durability of the force transmission path between the boom and the beam.
  • the present invention provides a fork lug type suspension rod anchoring structure, comprising a stainless steel tensile connector and a shear and non-pulling connector, the stainless steel tensile connector includes a bottom set A stainless steel rod with a stainless steel nut, the shear and non-pull-resistant connecting piece includes a shear-resistant and non-pull-resistant stud and a steel backing plate, the steel backing plate has a hole in the middle, and the stainless steel rod is separated from the steel backing plate.
  • the hole extends above the bridge deck; the shear and non-pulling studs uniformly distributed on the bottom surface of the steel backing plate include stainless steel welding nails, a polytetrafluoroethylene layer and a rubber layer, and the stainless steel welding nails are shear resistant
  • the core of the non-pulling stud, the PTFE layer is the middle layer, and the rubber layer is the outer layer.
  • the stainless steel rod has a solid cross-section with a diameter of not less than 10 cm and a length of not less than 6 times the diameter.
  • the length of the stainless steel rod above the steel backing plate is not more than 20 cm.
  • connection between the stainless steel rod and the steel backing plate is welding
  • the top surface of the steel backing plate is also welded with a stiffening steel plate connected to the stainless steel rod, and the stiffening steel plate and the stainless steel plate are also welded connection.
  • the diameter of the stainless steel welding nail core of the shear and non-pull-resistant stud is not less than 25mm, and the length of the stainless steel welding nail is not less than 5 times the diameter.
  • the thickness of the middle layer of the polytetrafluoroethylene layer is 2 mm.
  • the thickness of the rubber layer is 5 mm.
  • the rubber layer and the opened concrete bridge deck are bonded by a structural adhesive.
  • the fork lug type suspension rod anchoring structure of the present invention is a new type of anchor connection structure used for the transformation of the old bridge fork lug type suspension rods to solve the connection problem between the fork lug type anchors on the bridge deck and the existing beam anchoring area , That is, it can separate the horizontal component and vertical force of the suspender, so that it can be borne by different components in the anchoring connection structure, and the vertical force is completely transmitted to the beam, while the horizontal tension of the suspender is borne by the bridge deck.
  • These components are clearly stressed and can make full use of their respective performance advantages, thereby improving the reliability and durability of the force transmission path between the boom and the beam.
  • Figure 1 is a schematic structural diagram of an embodiment of the present invention
  • Figure 2 is a cross-sectional view at A-A in Figure 1;
  • Figure 3 is a cross-sectional view at B-B in Figure 1;
  • Figure 4 is a cross-sectional view of the shear and non-pull-out stud
  • 1 shear and non-pull-resistant studs 1 shear and non-pull-resistant studs; 2 stiffened steel plates; 3 steel backing plates; 4 stainless steel bars; 5 stainless steel nuts; 6 stainless steel welding nails; 7 polytetrafluoroethylene layers; 8 rubber layers.
  • the purpose of the present invention is to provide a fork lug type hanger rod anchoring structure, which is a new type of anchor connection structure used for the transformation of the old bridge fork lug type hanger rod to solve the problem of the fork lug type anchor on the bridge deck and the existing beam anchoring area
  • the connection problem improves the reliability and durability of the force transmission path between the boom and the beam.
  • the present invention provides a fork lug type suspension rod anchoring structure, which includes a stainless steel tensile connector and a shear-resistant non-pulling connector.
  • the stainless steel tensile connector includes a stainless steel with a stainless steel nut 5 at the bottom.
  • Bar 4 anti-shear non-pull-out connection piece includes shear-resistant non-pull-out stud 1 and steel backing plate 3.
  • the steel backing plate 3 has a hole in the middle, and the stainless steel rod 4 extends from the opening of the steel backing plate 3 to the bridge deck Above; the shear non-pulling studs 1 uniformly distributed on the bottom surface of the steel backing plate 3 include stainless steel welding nails 6, a PTFE layer 7 and a rubber layer 8.
  • the stainless steel welding studs 6 are the shear non-pulling studs 1 At the core, the PTFE layer 7 is the middle layer, and the rubber layer 8 is the outer layer.
  • the stainless steel rod 4 is a solid cross section with a diameter of not less than 10 cm and a length of not less than 6 times the diameter; the length of the stainless steel rod 4 above the steel backing plate 3 is not more than 20 cm.
  • the stainless steel rod 4 and the steel backing plate 3 are connected by welding.
  • the steel backing plate 3 has a round hole in the middle, and the size of the round hole allows the stainless steel rod to pass through.
  • the top surface of the steel backing plate 3 is also welded with a stiffening steel plate connected to the stainless steel rod 4 2.
  • the stiffening steel plate 2 and the stainless steel rod 4 are also welded and connected.
  • the diameter of the core of the stainless steel welding nail 6 of the shear and non-pulling stud 1 is not less than 25mm, and the length of the stainless steel welding nail 6 is not less than 5 times the diameter; the thickness of the middle layer of the PTFE layer 7 is 2mm.
  • the thickness of the rubber layer 8 is 5 mm, and the rubber layer 8 is bonded to the opened concrete bridge deck through a structural adhesive.
  • a sleeve made of the rubber layer 8 and the polytetrafluoroethylene layer 7 is made in the factory through adhesive bonding or other processes.
  • apply an adhesive on the wall of the hole and then insert the sleeve formed by the rubber layer 8 and the polytetrafluoroethylene layer 7 into the hole and combine it with Hole wall bonding; according to the relative position of the actual opening, the stainless steel welding nail 6 is welded to the steel backing plate 3; after the adhesive on the hole wall is consolidated and forming strength, a certain amount is applied to the steel backing plate 3
  • the stainless steel rod 4, the steel backing plate 3, and the stiffening steel plate 2 are
  • the horizontal rigidity of the shear and non-uplift connection 1 is much higher than that of the stainless steel rod 4, so the bridge operation almost assumes all the horizontal force components of the suspension rod in the anchoring structure.
  • the friction coefficient between PTFE and stainless steel is very small, it can slide under the action of a small vertical force, so the vertical pulling force of the boom is mainly borne by the stainless steel rod 4.
  • the steel backing plate 3 and the stiffening steel plate 2 are responsible for transmitting the horizontal component force of the boom to the shear and non-uplift connector 1 and the vertical force of the boom to the stainless steel rod 4.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

A fork-type suspender anchoring structure, comprising a stainless steel tensile connecting member and a shear and non-pull-resistant connecting member; the stainless steel tensile connecting member comprises stainless steel rods (4) each of which has a stainless steel nut (5) provided at the bottom thereof; the shear and non-pull-resistant connecting member comprises shear and non-pull-resistant bolts (1) and backing steel plates (3), an opening is provided in the middle of each backing steel plate (3), and the stainless steel rods (4) extend out from the openings of the backing steel plates (3) to above a bridge deck; the shear and non-pull-resistant bolts (1) are uniformly distributed on the bottom surface of each backing steel plate (3); and each shear and non-pull-resistant bolt (1) comprises a stainless steel welding bolt (6), a polytetrafluoroethylene layer (7) and a rubber layer (8), the stainless steel welding bolt (6) being the core of the shear and non-pull-resistant bolt (1), the polytetrafluoroethylene layer (7) being an intermediate layer, and the rubber layer (8) being an outer layer. The fork-type suspender anchoring structure can separate a horizontal component force from a vertical force of a suspender, and completely transfer the vertical force to a cross beam, and a horizontal pulling force of the suspender is borne by a bridge deck, improving the reliability and durability of a force transmission path between the suspender and the cross beam.

Description

一种叉耳式吊杆锚固结构Fork lug type suspension rod anchoring structure 技术领域Technical field

本发明涉及吊杆拱桥工程技术领域，特别是涉及一种叉耳式吊杆锚固结构。The invention relates to the technical field of boom arch bridge engineering, in particular to a fork lug type boom anchoring structure.

背景技术Background technique

既有吊杆拱桥中采用的吊杆锚头，如墩头锚、挤压式锚具等，通常位于桥面系下的横梁中，日常检查维修养护较为困难。为此，出现了将吊杆锚头移至桥面上的叉耳式吊杆设计方案，其桥面上的锚具由叉耳、销轴、拉杆或耳板组成。但既有吊杆拱桥的桥面系通常采用纵横梁格体系，其中横梁负责将桥面板传来的恒、活载再传至吊杆，因此承担了吊杆的锚固力，此外桥面板并非按腰梁来设计，不能承受向上的拉力，因此即使采用了桥面上叉耳式吊杆更换与改造方案，吊杆最终的锚固力仍然应传递至横梁。因此如何对横梁与桥面上锚具构造的连接进行可靠的设计是一个关键。The hanger anchor heads used in the existing hanger arch bridges, such as pier anchors, extrusion anchors, etc., are usually located in the beams under the bridge deck, and routine inspection, maintenance and maintenance are difficult. For this reason, a fork lug type boom design scheme that moves the anchor head of the boom to the bridge surface appears. The anchor on the bridge surface is composed of fork lugs, pins, tie rods or lug plates. However, the deck system of the existing suspender arch bridge usually adopts a vertical and horizontal beam grid system, in which the cross beam is responsible for transmitting the constant and live load from the bridge deck to the suspender, so it bears the anchoring force of the suspender. In addition, the bridge deck is not The waist beam is designed and cannot withstand upward pulling force. Therefore, even if the fork lug type suspender on the bridge is replaced and modified, the final anchoring force of the suspender should still be transmitted to the cross beam. Therefore, how to reliably design the connection between the beam and the anchorage structure on the bridge deck is a key.

发明内容Summary of the invention

本发明的目的是提供一种叉耳式吊杆锚固结构，用于旧桥叉耳式吊杆改造的新型锚固连接构造，以解决桥面系上叉耳式锚具与既有横梁锚固区的连接问题，提高了吊杆与横梁之间传力路径的可靠性和耐久性。The purpose of the present invention is to provide a fork lug type hanger rod anchoring structure, which is a new type of anchor connection structure used for the transformation of the old bridge fork lug type hanger rod to solve the problem of the fork lug type anchor on the bridge deck and the existing beam anchoring area The connection problem improves the reliability and durability of the force transmission path between the boom and the beam.

为实现上述目的，本发明提供了如下方案：本发明提供一种叉耳式吊杆锚固结构，包括不锈钢抗拉连接件和抗剪不抗拔连接件，所述不锈钢抗拉连接件包括底部设置有不锈钢螺母的不锈钢棒，所述抗剪不抗拔连接件包括抗剪不抗拔栓钉和钢垫板，所述钢垫板中间开孔，所述不锈钢棒从所述钢垫板的开孔中伸出到桥面以上；均布在所述钢垫板底面的所述抗剪不抗拔栓钉包括不锈钢焊钉、聚四氟乙烯层和橡胶层，所述不锈钢焊钉为抗剪不抗拔栓钉的核心，聚四氟乙烯层为中间层，橡胶层为外层。In order to achieve the above objective, the present invention provides the following solutions: the present invention provides a fork lug type suspension rod anchoring structure, comprising a stainless steel tensile connector and a shear and non-pulling connector, the stainless steel tensile connector includes a bottom set A stainless steel rod with a stainless steel nut, the shear and non-pull-resistant connecting piece includes a shear-resistant and non-pull-resistant stud and a steel backing plate, the steel backing plate has a hole in the middle, and the stainless steel rod is separated from the steel backing plate. The hole extends above the bridge deck; the shear and non-pulling studs uniformly distributed on the bottom surface of the steel backing plate include stainless steel welding nails, a polytetrafluoroethylene layer and a rubber layer, and the stainless steel welding nails are shear resistant The core of the non-pulling stud, the PTFE layer is the middle layer, and the rubber layer is the outer layer.

优选的，所述不锈钢棒为实心截面，其直径不小于10cm，长度不小于直径的6倍。Preferably, the stainless steel rod has a solid cross-section with a diameter of not less than 10 cm and a length of not less than 6 times the diameter.

优选的，所述不锈钢棒位于所述钢垫板以上的长度不大于20cm。Preferably, the length of the stainless steel rod above the steel backing plate is not more than 20 cm.

优选的，所述不锈钢棒与所述钢垫板的连接为焊接，所述钢垫板顶面还焊接有与所述不锈钢棒连接的加劲钢板，且所述加劲钢板与所述不锈钢板也焊接连接。Preferably, the connection between the stainless steel rod and the steel backing plate is welding, the top surface of the steel backing plate is also welded with a stiffening steel plate connected to the stainless steel rod, and the stiffening steel plate and the stainless steel plate are also welded connection.

优选的，所述抗剪不抗拔栓钉的不锈钢焊钉核心的直径不小于25mm，不锈钢焊钉的长度不小于直径的5倍。Preferably, the diameter of the stainless steel welding nail core of the shear and non-pull-resistant stud is not less than 25mm, and the length of the stainless steel welding nail is not less than 5 times the diameter.

优选的，所述聚四氟乙烯层中间层厚度为2mm。Preferably, the thickness of the middle layer of the polytetrafluoroethylene layer is 2 mm.

优选的，所述橡胶层的厚度为5mm。Preferably, the thickness of the rubber layer is 5 mm.

优选的，所述橡胶层与开孔后的混凝土桥面板通过结构胶黏剂粘结。Preferably, the rubber layer and the opened concrete bridge deck are bonded by a structural adhesive.

本发明相对于现有技术取得了以下技术效果：Compared with the prior art, the present invention has achieved the following technical effects:

本发明的叉耳式吊杆锚固结构，是一种用于旧桥叉耳式吊杆改造的新型锚固连接构造，以解决桥面系上叉耳式锚具与既有横梁锚固区的连接问题，即能够将吊杆水平分力与竖向力分离，使之由锚固连接构造中不同的构件来承担，并将竖向力完全传递至横梁，而吊杆水平拉力则由桥面板承受，每种构件受力明确并能充分利用各自的性能优势，从而提高了吊杆与横梁之间传力路径的可靠性和耐久性。The fork lug type suspension rod anchoring structure of the present invention is a new type of anchor connection structure used for the transformation of the old bridge fork lug type suspension rods to solve the connection problem between the fork lug type anchors on the bridge deck and the existing beam anchoring area , That is, it can separate the horizontal component and vertical force of the suspender, so that it can be borne by different components in the anchoring connection structure, and the vertical force is completely transmitted to the beam, while the horizontal tension of the suspender is borne by the bridge deck. These components are clearly stressed and can make full use of their respective performance advantages, thereby improving the reliability and durability of the force transmission path between the boom and the beam.

附图说明Description of the drawings

为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the embodiments. Obviously, the drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

图1为本发明实施例结构示意图；Figure 1 is a schematic structural diagram of an embodiment of the present invention;

图2为图1中A-A处的剖视图；Figure 2 is a cross-sectional view at A-A in Figure 1;

图3为图1中B-B处的剖视图；Figure 3 is a cross-sectional view at B-B in Figure 1;

图4为抗剪不抗拔栓钉的截面图；Figure 4 is a cross-sectional view of the shear and non-pull-out stud;

其中，1抗剪不抗拔栓钉；2加劲钢板；3钢垫板；4不锈钢棒；5不锈钢螺母；6不锈钢焊钉；7聚四氟乙烯层；8橡胶层。Among them, 1 shear and non-pull-resistant studs; 2 stiffened steel plates; 3 steel backing plates; 4 stainless steel bars; 5 stainless steel nuts; 6 stainless steel welding nails; 7 polytetrafluoroethylene layers; 8 rubber layers.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进 行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

本发明的目的是提供一种叉耳式吊杆锚固结构，用于旧桥叉耳式吊杆改造的新型锚固连接构造，以解决桥面系上叉耳式锚具与既有横梁锚固区的连接问题，提高了吊杆与横梁之间传力路径的可靠性和耐久性。The purpose of the present invention is to provide a fork lug type hanger rod anchoring structure, which is a new type of anchor connection structure used for the transformation of the old bridge fork lug type hanger rod to solve the problem of the fork lug type anchor on the bridge deck and the existing beam anchoring area The connection problem improves the reliability and durability of the force transmission path between the boom and the beam.

为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

如图1-4所示，本发明提供一种叉耳式吊杆锚固结构，包括不锈钢抗拉连接件和抗剪不抗拔连接件，不锈钢抗拉连接件包括底部设置有不锈钢螺母5的不锈钢棒4，抗剪不抗拔连接件包括抗剪不抗拔栓钉1和钢垫板3，钢垫板3中间开孔，不锈钢棒4从钢垫板3的开孔中伸出到桥面以上；均布在钢垫板3底面的抗剪不抗拔栓钉1包括不锈钢焊钉6、聚四氟乙烯层7和橡胶层8，不锈钢焊钉6为抗剪不抗拔栓钉1的核心，聚四氟乙烯层7为中间层，橡胶层8为外层。As shown in Figures 1-4, the present invention provides a fork lug type suspension rod anchoring structure, which includes a stainless steel tensile connector and a shear-resistant non-pulling connector. The stainless steel tensile connector includes a stainless steel with a stainless steel nut 5 at the bottom. Bar 4, anti-shear non-pull-out connection piece includes shear-resistant non-pull-out stud 1 and steel backing plate 3. The steel backing plate 3 has a hole in the middle, and the stainless steel rod 4 extends from the opening of the steel backing plate 3 to the bridge deck Above; the shear non-pulling studs 1 uniformly distributed on the bottom surface of the steel backing plate 3 include stainless steel welding nails 6, a PTFE layer 7 and a rubber layer 8. The stainless steel welding studs 6 are the shear non-pulling studs 1 At the core, the PTFE layer 7 is the middle layer, and the rubber layer 8 is the outer layer.

不锈钢棒4为实心截面，其直径不小于10cm，长度不小于直径的6倍；不锈钢棒4位于钢垫板3以上的长度不大于20cm。The stainless steel rod 4 is a solid cross section with a diameter of not less than 10 cm and a length of not less than 6 times the diameter; the length of the stainless steel rod 4 above the steel backing plate 3 is not more than 20 cm.

不锈钢棒4与钢垫板3的连接为焊接，钢垫板3中间开圆孔，圆孔大小可让不锈钢棒从中穿过，钢垫板3顶面还焊接有与不锈钢棒4连接的加劲钢板2，且加劲钢板2与不锈钢棒4也焊接连接。The stainless steel rod 4 and the steel backing plate 3 are connected by welding. The steel backing plate 3 has a round hole in the middle, and the size of the round hole allows the stainless steel rod to pass through. The top surface of the steel backing plate 3 is also welded with a stiffening steel plate connected to the stainless steel rod 4 2. The stiffening steel plate 2 and the stainless steel rod 4 are also welded and connected.

抗剪不抗拔栓钉1的不锈钢焊钉6核心的直径不小于25mm，不锈钢焊钉6的长度不小于直径的5倍；聚四氟乙烯层7中间层厚度为2mm。橡胶层8的厚度为5mm，橡胶层8与开孔后的混凝土桥面板通过结构胶黏剂粘结。The diameter of the core of the stainless steel welding nail 6 of the shear and non-pulling stud 1 is not less than 25mm, and the length of the stainless steel welding nail 6 is not less than 5 times the diameter; the thickness of the middle layer of the PTFE layer 7 is 2mm. The thickness of the rubber layer 8 is 5 mm, and the rubber layer 8 is bonded to the opened concrete bridge deck through a structural adhesive.

施工前，先在工厂通过胶黏剂粘结或其他工艺制作好橡胶层8与聚四氟乙烯层7复合而成的套筒。施工时，在桥面人行道板垫石上相应位置开孔，开孔后在孔壁上涂粘结剂，然后将橡胶层8与聚四氟乙烯层7复合而成的套筒插入孔中并与孔壁粘结；根据实际开孔的相对位置将不锈钢焊钉6焊接在钢垫板3上；待孔壁上的粘结剂固结并形成强度后，通过在钢垫 板3上施加一定的压力将不锈钢钉插入橡胶层8与聚四氟乙烯层7复合而成的套筒中；将不锈钢棒4插入钢垫板的圆孔及其下的原钢护筒中，并上好不锈钢螺母5；将不锈钢棒4、钢垫板3、加劲钢板2焊接在一起。Before construction, a sleeve made of the rubber layer 8 and the polytetrafluoroethylene layer 7 is made in the factory through adhesive bonding or other processes. During construction, open a hole at the corresponding position on the pavement slab of the bridge deck. After opening the hole, apply an adhesive on the wall of the hole, and then insert the sleeve formed by the rubber layer 8 and the polytetrafluoroethylene layer 7 into the hole and combine it with Hole wall bonding; according to the relative position of the actual opening, the stainless steel welding nail 6 is welded to the steel backing plate 3; after the adhesive on the hole wall is consolidated and forming strength, a certain amount is applied to the steel backing plate 3 Insert the stainless steel nail into the sleeve formed by the rubber layer 8 and the polytetrafluoroethylene layer 7 under pressure; insert the stainless steel rod 4 into the round hole of the steel backing plate and the original steel casing underneath, and install the stainless steel nut 5; The stainless steel rod 4, the steel backing plate 3, and the stiffening steel plate 2 are welded together.

抗剪不抗拔连接件1水平方向的刚度远高于不锈钢棒4，因此桥梁运营中几乎承担了锚固结构内所有的吊杆水平分力作用。同时由于聚四氟乙烯与不锈钢之间的摩擦系数很小，能在较小的竖向力作用下产生滑动，因此吊杆的竖向拉力主要由不锈钢棒4承担。而钢垫板3、加劲钢板2负责将吊杆水平分力传递至抗剪不抗拔连接件1以及将吊杆竖向力传递至不锈钢棒4。The horizontal rigidity of the shear and non-uplift connection 1 is much higher than that of the stainless steel rod 4, so the bridge operation almost assumes all the horizontal force components of the suspension rod in the anchoring structure. At the same time, since the friction coefficient between PTFE and stainless steel is very small, it can slide under the action of a small vertical force, so the vertical pulling force of the boom is mainly borne by the stainless steel rod 4. The steel backing plate 3 and the stiffening steel plate 2 are responsible for transmitting the horizontal component force of the boom to the shear and non-uplift connector 1 and the vertical force of the boom to the stainless steel rod 4.

本发明中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处。综上所述，本说明书内容不应理解为对本发明的限制。In the present invention, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention; at the same time, for those of ordinary skill in the art, according to this The idea of the invention will change in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims (8)

一种叉耳式吊杆锚固结构，其特征在于：包括不锈钢抗拉连接件和抗剪不抗拔连接件，所述不锈钢抗拉连接件包括底部设置有不锈钢螺母的不锈钢棒，所述抗剪不抗拔连接件包括抗剪不抗拔栓钉和钢垫板，所述钢垫板中间开孔，所述不锈钢棒从所述钢垫板的开孔中伸出到桥面以上；均布在所述钢垫板底面的所述抗剪不抗拔栓钉包括不锈钢焊钉、聚四氟乙烯层和橡胶层，所述不锈钢焊钉为抗剪不抗拔栓钉的核心，聚四氟乙烯层为中间层，橡胶层为外层。A fork lug type suspension rod anchoring structure, which is characterized in that it comprises a stainless steel tensile connecting piece and a shear non-pulling connecting piece. The stainless steel tensile connecting piece includes a stainless steel rod with a stainless steel nut at the bottom. The non-pull-out connector includes a shear-resistant and non-pull-resistant stud and a steel backing plate. The steel backing plate has a hole in the middle, and the stainless steel rod extends from the opening of the steel backing plate to above the bridge deck; The shear and non-pulling studs on the bottom surface of the steel backing plate include stainless steel welding nails, a polytetrafluoroethylene layer and a rubber layer. The stainless steel welding studs are the core of the shear non-pulling studs. The vinyl layer is the middle layer, and the rubber layer is the outer layer. 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述不锈钢棒为实心截面，其直径不小于10cm，长度不小于直径的6倍。The fork lug type suspension rod anchoring structure according to claim 1, wherein the stainless steel rod is a solid cross section, the diameter of which is not less than 10 cm, and the length is not less than 6 times the diameter. 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述不锈钢棒位于所述钢垫板以上的长度不大于20cm。The fork lug type suspension rod anchoring structure according to claim 1, wherein the length of the stainless steel rod above the steel backing plate is not more than 20 cm. 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述不锈钢棒与所述钢垫板的连接为焊接，所述钢垫板顶面还焊接有与所述不锈钢棒连接的加劲钢板，且所述加劲钢板与所述不锈钢板也焊接连接。The fork lug type suspension rod anchoring structure according to claim 1, wherein the connection between the stainless steel rod and the steel backing plate is welding, and the top surface of the steel backing plate is also welded to connect with the stainless steel rod. The stiffening steel plate, and the stiffening steel plate and the stainless steel plate are also welded and connected. 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述抗剪不抗拔栓钉的不锈钢焊钉核心的直径不小于25mm，不锈钢焊钉的长度不小于直径的5倍。The fork lug type suspender anchoring structure according to claim 1, characterized in that: the diameter of the stainless steel welding nail core of the shear and non-pull stud is not less than 25mm, and the length of the stainless steel welding nail is not less than 5 times the diameter . 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述聚四氟乙烯层中间层厚度为2mm。The fork-ear type suspension rod anchoring structure according to claim 1, wherein the thickness of the middle layer of the polytetrafluoroethylene layer is 2 mm. 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述橡胶层的厚度为5mm。The fork lug type suspension rod anchoring structure according to claim 1, wherein the thickness of the rubber layer is 5 mm. 根据权利要求1所述的叉耳式吊杆锚固结构，其特征在于：所述橡胶层与开孔后的混凝土桥面板通过结构胶黏剂粘结。The fork lug type suspension rod anchoring structure according to claim 1, wherein the rubber layer and the holed concrete bridge deck are bonded by a structural adhesive.
PCT/CN2020/081603 2019-11-18 2020-03-27 Fork-type suspender anchoring structure Ceased WO2021098112A1 (en)

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