WO2023024687A1 - 一种低噪声桥梁聚合物伸缩装置 - Google Patents

一种低噪声桥梁聚合物伸缩装置 Download PDF

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WO2023024687A1
WO2023024687A1 PCT/CN2022/101460 CN2022101460W WO2023024687A1 WO 2023024687 A1 WO2023024687 A1 WO 2023024687A1 CN 2022101460 W CN2022101460 W CN 2022101460W WO 2023024687 A1 WO2023024687 A1 WO 2023024687A1
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bridge
low
surface layer
layer
expansion device
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PCT/CN2022/101460
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English (en)
French (fr)
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杨锐
桂永全
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杨锐
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Publication of WO2023024687A1 publication Critical patent/WO2023024687A1/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
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • E01D19/065—Joints having sliding plates

Definitions

  • the invention relates to the technical field of bridge expansion devices, in particular to a low-noise bridge polymer expansion device.
  • the bridge expansion device is a freely deformable gap-spanning device installed between the connecting ends of the bridge structure. Its function is to make the bridge structure respond to factors such as temperature changes, concrete or steel shrinkage, creep displacement, and dynamic loads. Under the circumstances, it can maintain free multi-dimensional expansion and contraction to adapt to various deformations of the bridge structure, which is an indispensable structural device to ensure the normal operation of the bridge.
  • the bridge expansion device In addition to the functions of making the car run comfortably, smoothly, low noise, waterproof and anti-infiltration of sundries, the bridge expansion device must also be durable, easy to install and construct, and easy to maintain. Its material performance and device structure design will directly affect the service quality and service life of the bridge, and even threaten the structural safety, driving safety and service life of the bridge.
  • the large-scale expansion devices of urban elevated roads and expressways are all made of pure steel.
  • the position of the expansion joint device presents a hard and rigid transverse direction perpendicular to the driving direction.
  • the discontinuity of the road surface caused by traditional all-steel expansion devices, especially the most widely used modular expansion devices is very prone to serious impact vibration and noise.
  • This disturbing expansion joint impact noise is not only very loud, but can also travel for several kilometers.
  • the impact noise of expansion joints has a greater impact on the lives of residents near urban viaducts and expressways, often causing serious environmental noise pollution problems.
  • the all-steel comb-tooth telescopic device has too high rigidity, poor displacement followability, and low energy damping performance. Under the impact of long-term continuous wheel loads, it is easy to cause damage to the telescopic device and the road surface.
  • the seamless elastic asphalt expansion device and the rubber plate type mainly use elastic materials as the displacement deformation body, which has high requirements on the material.
  • the elastic body material will arch or sink when it is stretched.
  • the service life of the elastic body is short and the deformation is limited. It is only suitable for many Bridges with small spans are gradually being eliminated.
  • the traffic regulations have clearly stipulated that the use of rubber plate expansion devices is prohibited on high-grade highways. It is difficult to balance the rigidity and flexibility of the all-steel expansion device. Increasing the flexibility of the expansion device will not ensure the driving safety of the expansion joint and protect the ends of the bridge components; increasing the rigidity of the expansion device will often lead to the failure of the installation of the expansion device. Broken damage.
  • the present invention proposes a low-noise bridge polymer expansion device.
  • a low-noise bridge polymer expansion device which includes an expansion device composed of a plurality of elastic modules spanning the bridge expansion joints, and the elastic modules are along the length direction of the bridge expansion joints. Arranged and installed; the two sides are provided with a plurality of anchor bolt holes, and the anchor bolt holes are provided with bolts anchored to the end of the bridge plate; the elastic module at least includes a surface layer made of high molecular polymer elastic material and a bottom layer located on the lower surface of the surface layer and made of high molecular polymer elastic material.
  • the surface layer and the bottom layer are made of high molecular polymer elastic materials, which can form a rigid-flexible coupling organizational structure.
  • the flexibility and low frictional resistance of polymer elastic materials can also be used to make the displacement of bridge components easier.
  • the device spans the bridge expansion joint gap to ensure the continuity of the road surface, so that vehicle tires can pass smoothly, which can effectively absorb the impact load generated by driving and reduce the noise of vehicles passing through the expansion device.
  • an intermediate layer made of steel plates or steel grids is arranged between the surface layer and the bottom layer.
  • the material composite structure can be used to ensure the structural rigidity, ensure the driving safety of the bridge expansion joints and protect the end of the bridge slab.
  • the surface layer or/and the bottom layer are provided with a plurality of broken-line grooves to form a spring-type groove structure, and the cross-sectional shape of the broken-line grooves is straight wall, trapezoidal or stepped.
  • a spring-type groove structure is formed by engraving a plurality of folded line grooves on the surface layer or/and bottom layer, and the gap between the folded line grooves has enough space to make the polymer elastic material on the surface layer or bottom layer on both sides produce a larger Displacement, forming spring deformation, and the elastic module of the expansion device will not arch or sink, so as to achieve the use function of multi-directional displacement of the expansion joint; when the cross-sectional shape of the fold line groove is trapezoidal, the side wall slope of the fold line groove It has the effect of shoveling, and can squeeze the sand in the folded line groove out of the groove to play a self-cleaning effect; in actual use, the folded line groove can not be cut through, and a very thin layer is left on the end face of the folded line groove
  • the material on the surface layer or the bottom layer between the fold line grooves constitutes a fold line link flexible hinge
  • the fold line link flexible hinge includes at least two connecting rods arranged staggered in the form of fold lines. connected by flexible hinges.
  • this invention can adapt to a larger range; at the same time, it can realize large-deformation flexible hinge displacement, has a better expansion and contraction function, and can self-adaptively meet the functional requirements of multi-directional displacement of highway bridge expansion joints; in addition, bridges in areas where earthquakes may occur During an earthquake, the bridge slabs on both sides of the expansion joint usually rely on the limit of the special anti-seismic bridge bearing to ensure that the bridge slab will not fall off from the bridge column.
  • the expansion device has an anti-seismic effect that other types of expansion devices do not have.
  • the flexible hinge of the broken line connecting rod has a strong geometric deformation ability, which can effectively weaken the mutual load transfer between the bridge ends, and it is integral across the expansion joint, and the bridges on both sides are connected to each other.
  • the ends are flexibly connected together to form a mechanical load attenuation damper, so it has better anti-seismic function and improves the safety of the bridge.
  • the surface layer, middle layer and bottom layer are split or integral prefabricated parts.
  • the middle layer is located at the bottom of the surface layer and fully covers the surface layer or partially covers the surface layer.
  • the surface layer and the bottom layer are made of polyurethane elastomer, hydrogenated styrene block copolymer elastomer, modified ultra-high molecular weight polyethylene, high-density polyethylene, and synthetic rubber; or polyurethane elastomer, hydrogenated Styrene block copolymer elastomer, two or more blends or/and copolymers in any combination of modified ultra-high molecular weight polyethylene, high-density polyethylene, and synthetic rubber are materials, and the bottom layer can also be Available in polyurea, polyurethane or epoxy resin.
  • a kind of low-noise bridge polymer telescoping device described in the present invention described elastic body flexible articulated integrated road bridge telescoping device, according to composite material structure, broken line connecting rod flexible articulated design, groove space size and material type Selection, to achieve large deformation and variable stiffness flexible hinges, which can be self-adaptive to meet the functional requirements of multi-directional displacement of highway bridge expansion devices, forming an elastic module that spans expansion joints as a whole, balancing rigidity and flexibility, and ensuring the continuity of the road surface Vehicle tires can pass smoothly, with simple structure, less steel consumption, low structural height, good multi-directional deformation coordination, fatigue resistance, high temperature stability and low temperature crack resistance, waterproof and seepage resistance; Comfortable, easy construction, fast installation, no jumping, low noise; it can adapt to the multi-dimensional deformation of expansion joint structures of wide bridges, curved bridges, inclined bridges, etc. When various vehicles pass the bridge, It can evenly distribute the horizontal force and absorb part of the vibration, thus prolonging the life of the bridge.
  • a low-noise bridge polymer expansion device due to the strong geometric deformation capacity of the flexible hinge of the broken line connecting rod, the expansion device has an anti-seismic effect that other types of expansion devices do not have, and can effectively weaken the bridge end.
  • the loads are transferred to each other, and they are integrated across the expansion joints, and the bridge ends on both sides are flexibly connected together to form a mechanical load attenuation damper. Therefore, the expansion device has a better anti-seismic function and improves the safety of the bridge.
  • a low-noise bridge polymer expansion device since the elastic module can be a split or integral prefabricated part, it has light weight, can be quickly paved and constructed at room temperature, and is easy to install and replace, greatly It simplifies the construction method and technical requirements, improves the construction efficiency, and can reach the conditions of opening to traffic in a short time, so it can quickly open to traffic and minimize the impact on the operation of daily traffic facilities; it is suitable for long-span steel bridges and concrete bridges Expansion joints of various specifications are also suitable for rapid installation and maintenance of urban viaducts, high-grade highways, and expressway expansion devices.
  • Fig. 1 is the cross-sectional schematic diagram when elastic module is two-layer composite structure among the present invention
  • Fig. 2 is a schematic cross-sectional view of the elastic module in the present invention when it is a three-layer composite structure
  • Fig. 3 is another schematic cross-sectional view when the elastic module is a three-layer composite structure in the present invention.
  • Fig. 4 is a schematic cross-sectional view of a straight-walled non-penetrating fold line groove on the surface layer and the bottom layer of the elastic module in the present invention
  • Fig. 5 is a schematic cross-sectional view of a trapezoidal non-penetrating fold line groove on the surface layer and the bottom layer of the elastic module in the present invention
  • Fig. 6 is a schematic cross-sectional view of the stepped non-penetrating broken line groove on the surface layer and the bottom layer of the elastic module in the present invention
  • Fig. 7 is a schematic top view of the first type of broken line groove in the present invention.
  • Fig. 8 is a second schematic top view of the broken line groove in the present invention.
  • Fig. 9 is a third schematic top view of the broken line groove in the present invention.
  • Fig. 10 is a top view schematic diagram of the arrangement of broken line grooves and steel plates in the present invention.
  • Fig. 11 is another schematic top view of the arrangement of broken line grooves and steel plates in the present invention.
  • Fig. 12 is another top view schematic diagram of the arrangement of broken line grooves and steel plates in the present invention.
  • Fig. 13 is a schematic diagram of the installation of the low-noise bridge polymer expansion device of the present invention.
  • a low-noise bridge polymer expansion device includes an expansion device 7 composed of a plurality of elastic modules spanning bridge expansion joints 8, and the elastic modules are arranged and installed along the length direction of bridge expansion joints 8
  • the two sides are provided with a plurality of anchor bolt holes 4, and the anchor bolt holes 4 are provided with bolts anchored with the bridge plate end 9;
  • the elastic module at least includes the surface layer and the bottom layer 3 below the surface layer 1,
  • the surface layer 1 and the bottom layer 3 are made of polyurethane elastomer material.
  • an intermediate layer 2 made of steel plates or steel grids is arranged between the surface layer 1 and the bottom layer 3 .
  • the difference is that the surface layer 1 or/and the bottom layer 3 are provided with a plurality of folded line grooves 5 to form a spring-type groove structure, and the cross-sectional shape of the folded line grooves 5 is straight wall, trapezoidal or ladder shape.
  • the middle layer 2 is located at the bottom of the surface layer 1 and partially covers the surface layer 1, wherein, the partial coverage of the surface layer means that the coverage does not include the location of the anchor bolt hole 4 and/or the coverage does not include the fold line groove The location of slot 5.
  • the material on the surface layer or the bottom layer between the fold line grooves constitutes a fold line connecting rod flexible hinge
  • the fold line connecting rod flexible hinge includes at least two connecting rods arranged alternately in the form of fold lines 10.
  • the connecting rods 10 are connected by flexible hinges 11 .
  • the surface layer 1 and the bottom layer 3 are made of hydrogenated styrene block copolymer elastomer.

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

Abstract

一种低噪声桥梁聚合物伸缩装置（7），包括多个跨越桥梁伸缩缝（8）的弹性模块，所述弹性模块沿着桥梁伸缩缝（8）长度方向排列安装，两侧边设置有多个锚固螺栓孔（4），所述锚固螺栓孔（4）内设置有与桥梁板端部（9）锚固的螺栓；所述弹性模块至少包括以高分子聚合物弹性材料制成的表层（1）及位于表层（1）的下端面且以高分子聚合物弹性材料为材质的底层（3）。所述伸缩装置能够平衡兼顾刚性和柔性，保证道路表面的连续性，车辆轮胎能平顺通过，构造简单，用钢量少，结构高度低，具有很好的多方位变形协调性、抗疲劳性能、高温稳定性、低温抗裂性、以及防水防渗性；行车舒适、施工简便易行、安装快速、不跳车、低噪声。

Description

一种低噪声桥梁聚合物伸缩装置
本申请要求于2021年08月24日提交中国专利局、申请号为202110974175.2、申请名称为“一种低噪声桥梁聚合物伸缩装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及桥梁伸缩装置技术领域，具体的说是一种低噪声桥梁聚合物伸缩装置。
背景技术
桥梁伸缩装置，是在桥梁结构物连接端之间设置的能自由变形的跨缝装置，其功能是使桥梁结构物在气温变化及混凝土或钢材收缩、蠕变位移，以及动荷载等因素的作用下，能够保持自由多维方向的伸缩，以适应桥梁结构的各种变形，为一个保障桥梁正常运行中必不可少的结构性装置。
桥梁伸缩装置除了必须具备使汽车行驶舒适、平顺、低噪音、防水防杂物渗入功能之外，还必须经久耐用，安装施工简便易行，维修方便。其材料性能和装置结构设计会直接影响到桥梁的运营服务质量及使用年限，甚至会威胁到桥梁的结构安全、行车安全和桥梁的使用寿命。
目前，城市高架道路和高速公路较大规格伸缩装置，均完全采用单纯钢材制造，相对于比较柔软且富有弹性的沥青道路而言，伸缩缝装置位置处呈现为一个垂直于行车方向的坚硬刚性横向地带，特别是，传统全钢制伸缩装置造成道路表面的不连续，尤其是现应用最多的模数式伸缩装置，非常容易产生严重的冲击振动和噪声。这种令人烦恼的伸缩缝冲击噪声，不但声音强度很大，而且可传播到数公里远处。相比较各种交通噪声源而言，伸缩缝冲击噪声对于城市高架桥和高速公路两旁附近居民生活影响更大，常常造成严重环境噪声污染问题。
全钢制梳齿伸缩装置刚性过大、变位随动性差、能量阻尼性小，在长期连续车轮荷载的冲击下，很容易造成伸缩装置和路面的损坏。无缝式弹性沥青伸缩装置和橡胶板式主要采用弹性材料做位移变形体，对材料要求高，弹 性体材料伸缩时会起拱或下沉，弹性体使用寿命短，变形量有限，仅适用于很小跨径的桥梁，而且逐渐在被淘汰中，交通规范中已明确规定在高等级公路上禁止使用橡胶板式伸缩装置。全钢制伸缩装置刚性和柔性难以达到平衡兼顾，增加伸缩装置的柔性，则不能保证伸缩缝的行车安全和保护桥梁构件的端部；增加伸缩装置的刚性，则常常导致伸缩装置安装锚固件的断裂损坏。
发明内容
为了弥补现有技术的不足，解决现有的全钢制伸缩装置刚性和柔性难以达到平衡兼顾所造成的诸多问题，以及噪声污染大问题，本发明提出一种低噪声桥梁聚合物伸缩装置。
本发明解决其技术问题所采用的技术方案是：一种低噪声桥梁聚合物伸缩装置，包括由多个跨越桥梁伸缩缝的弹性模块构成的伸缩装置，所述弹性模块沿着桥梁伸缩缝长度方向排列安装；所述两侧边设置有多个锚固螺栓孔，所述锚固螺栓孔内设置有与桥梁板端部锚固的螺栓；所述弹性模块至少包括以高分子聚合物弹性材料制成的表层及位于表层的下端面且以高分子聚合物弹性材料为材质的底层。
使用时，通过以高分子聚合物弹性材料制成表层及底层的设置，能够形成刚柔耦合的组织结构，结构刚度较大，同时具有柔性，可承受较大的多维方向变位，使得弹性模块除具有竖向刚度与压缩变形且能承受垂直荷载及适应梁端转动外，还可利用高分子聚合物弹性材料本身的柔韧性和低摩擦阻力，可使桥梁构件的位移较容易，所述伸缩装置作为一个整体弹性模块跨越桥梁伸缩缝间隙，保证道路表面的连续性，使得车辆轮胎能平顺通过，进而可有效吸收行车所产生的冲击荷载，降低车辆通过伸缩装置的噪声。
优选的，所述表层与底层之间设置有由钢板或钢格栅构成的中间层。通过中间层的设置，能够利用材料复合结构保证结构刚性，保证桥梁伸缩缝的行车安全和保护桥梁板端部。
优选的，所述表层或/和底层设置有多个折线沟槽以形成弹簧式沟槽结构，所述折线沟槽的剖面形状为直壁、梯形或阶梯形。通过在表层或/和底层刻有多个折线沟槽以形成弹簧式沟槽结构，利用折线沟槽的间隙有足够空间尺寸，使其两侧表层或底层的高分子聚合物弹性材料产生较大位移，形成弹簧形式变形，且伸缩装置的弹性模块不会起拱或下沉，从而达到伸缩缝多向变位的 使用功能；当折线沟槽的剖面形状为梯形时，折线沟槽侧壁斜面具有铲除效果，可以将折线沟槽中砂土挤压出沟槽外面，起到自我清洁作用；实际使用时，折线沟槽能够不切割通透，并在折线沟槽端面留有很薄的一层膜，因此能够在不影响伸缩位移的同时起到密封效果，不让砂土和雨水渗透到桥梁底下，降低钢板或钢格栅锈蚀的几率。
优选的，所述折线沟槽之间的表层或底层上的材料构成折线连杆柔性铰链，所述折线连杆柔性铰链包括呈折线形式交错布置的至少两个连接杆，所述连接杆之间通过柔性铰连接。通过折线连杆柔性铰链的设置，能够通过连接杆数量的调整来适应从微小型到大型所有应用场景，相较于现有的整体式桥梁伸缩缝仅可用于80-200mm的微小型场景，本发明能够较大的适应范围；同时实现大变形柔性铰接位移，具有更好的伸缩功能，自适应满足公路桥梁伸缩缝多向变位的使用功能要求；另外，有可能发生地震的地区桥梁，在地震时伸缩缝两侧的桥梁板，通常依靠专门抗震桥梁支座的限位，达到确保桥梁板不会从桥柱上震脱落。所述伸缩装置有着其它类型伸缩装置所不具备的抗震作用，折线连杆柔性铰链的几何变形能力强，可有效削弱桥梁端之间荷载互相传递，而且为整体式跨越伸缩缝，把两侧桥梁端柔性连接在一起，构成力学荷载衰减阻尼器，因此具有较好的抗地震功能，提高桥梁的安全性。
优选的，所述表层、中间层及底层为分体式或整体式的预制件。
优选的，所述中间层位于表层的底部且全面覆盖表层或局部覆盖表层。
优选的，所述表层及底层是以聚氨酯弹性体，氢化苯乙烯嵌段共聚物弹性体，改性超高分子量聚乙烯、高密度聚乙烯、合成橡胶为材质；或是以聚氨酯弹性体，氢化苯乙烯嵌段共聚物弹性体，改性超高分子量聚乙烯、高密度聚乙烯、合成橡胶中的两种或多种任意组合的共混物或/和共聚物为材质，所述底层还能够以聚脲、聚氨酯或环氧树脂为材质。
本发明的有益效果如下：
1.本发明所述的一种低噪声桥梁聚合物伸缩装置，所述弹性体柔性铰接整体式公路桥梁伸缩装置，依据复合材料结构、折线连杆柔性铰接设计、沟槽空间尺寸和材料种类的选择,实现大变形变刚度柔性铰接，可自适应满足公路桥梁伸缩装置多向变位的使用功能要求，形成为一整体跨越伸缩缝的弹性模块，平衡兼顾了刚性和柔性，保证道路表面的连续性，车辆轮胎能平顺通过，其构造简单，用钢量少，结构高度低，很好的多方位变形协调性、抗疲 劳性能、高温稳定性和低温抗裂性、防水防渗性；具有行车舒适、施工简便易行、快速安装、不跳车、低噪声的好处；能适应宽桥、曲线桥、斜桥等多种规格伸缩缝结构在多维方位的变形，当各种车辆过桥梁时，能均匀分布水平力，吸收部分振动，从而延长桥梁寿命。
2.本发明所述的一种低噪声桥梁聚合物伸缩装置，由于折线连杆柔性铰链的几何变形能力强，所述伸缩装置有着其它类型伸缩装置所不具备的抗震作用，可有效削弱桥梁端之间荷载互相传递，而且为整体式跨越伸缩缝，把两侧桥梁端柔性连接在一起，构成力学荷载衰减阻尼器，因此所述伸缩装置具有较好的抗地震功能，提高桥梁的安全性。
3.本发明所述的一种低噪声桥梁聚合物伸缩装置，由于弹性模块可以为分体式或整体式的预制件，自重轻，能够在常温下进行快速铺装施工，安装和更换方便，大大简化了施工方法和技术要求，提高施工效率，且能在短时间内达到通车使用条件，因此能够快速开放交通，对日常交通设施运行的影响减到最小程度；适合大跨度钢桥梁和混凝土桥梁的多种规格伸缩缝，也适合城市高架桥梁、高等级公路、高速公路伸缩装置的快速安装和维修工程。
附图说明
下面结合附图对本发明作进一步说明。
图1为本发明中弹性模块为两层复合结构时的断面示意图；
图2为本发明中弹性模块为三层复合结构时的一种断面示意图；
图3为本发明中弹性模块为三层复合结构时的另一种断面示意图；
图4为本发明中弹性模块表层及底层的直壁非贯通折线沟槽断面示意图；
图5为本发明中弹性模块表层及底层的梯形非贯通折线沟槽断面示意图；
图6为本发明中弹性模块表层及底层的阶梯非贯通折线沟槽断面示意图；
图7为本发明中折线沟槽的第一种俯视示意图；
图8为本发明中折线沟槽的第二种俯视示意图；
图9为本发明中折线沟槽的第三种俯视示意图；
图10为本发明中折线沟槽及钢板排列的一种俯视示意图；
图11为本发明中折线沟槽及钢板排列的另一种俯视示意图；
图12为本发明中折线沟槽及钢板排列的另一种俯视示意图；
图13为本发明中低噪声桥梁聚合物伸缩装置安装示意图。
图中：
1、表层；2、中间层；3、底层；4、锚固螺栓孔；5、折线沟槽；6、道路表层；7、伸缩装置；8、桥梁伸缩缝；9、桥梁板端部；10、连接杆；11、柔性铰。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施方式，进一步阐述本发明。
实施例一：
如图1及13所示，一种低噪声桥梁聚合物伸缩装置，包括由多个跨越桥梁伸缩缝8的弹性模块构成的伸缩装置7，所述弹性模块沿着桥梁伸缩缝8长度方向排列安装；所述两侧边设置有多个锚固螺栓孔4，所述锚固螺栓孔4内设置有与桥梁板端部9锚固的螺栓；所述弹性模块，至少包括表层及表层1下方的底层3，所述表层1及底层3是以聚氨酯弹性体材料制成。
实施例二：
与实施例一相同，所不同的是所述表层1与底层3之间设置有由钢板或钢格栅构成的中间层2。
实施例三：
与实施例一相同，所不同的是所述表层1或/和底层3设置有多个折线沟槽5以形成弹簧式沟槽结构，所述折线沟槽5的剖面形状为直壁、梯形或阶梯形。
实施例四：
与实施例一相同，所不同的是所述表层1、中间层2及底层3为分体式或整体式的预制件。
实施例五：
与实施例一相同，所不同的是所述中间层2位于表层1的底部且局部覆盖表层1，其中，局部覆盖表层是指覆盖不包括锚固螺栓孔4所在位置 和/或覆盖不包括折线沟槽5所在位置。
实施例六：
与实施例一相同，所不同的是所述折线沟槽之间的表层或底层上的材料构成折线连杆柔性铰链，所述折线连杆柔性铰链包括呈折线形式交错布置的至少两个连接杆10，所述连接杆10之间通过柔性铰11连接。
实施例六：
与实施例一相同，所不同的是所述表层1及底层3是以氢化苯乙烯嵌段共聚物弹性体为材料。
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (7)

  1. 一种低噪声桥梁聚合物伸缩装置，其特征在于，包括由多个跨越桥梁伸缩缝(8)的弹性模块构成的伸缩装置(7)，所述弹性模块沿着桥梁伸缩缝(8)长度方向排列安装；所述两侧边设置有多个锚固螺栓孔(4)，所述锚固螺栓孔(4)内设置有与桥梁板端部(9)锚固的螺栓；所述弹性模块至少包括以高分子聚合物弹性材料制成的表层(1)及位于表层(1)的下端面且以高分子聚合物弹性材料为材质的底层(3)。
  2. 根据权利要求1所述的一种低噪声桥梁聚合物伸缩装置，其特征在于，所述表层(1)与底层(3)之间设置有由钢板或钢格栅构成的中间层(2)。
  3. 根据权利要求2所述的一种低噪声桥梁聚合物伸缩装置，其特征在于，所述表层(1)或/和底层(3)设置有多个折线沟槽(5)以形成弹簧式沟槽结构，所述折线沟槽(5)的剖面形状为直壁、梯形或阶梯形。
  4. 根据权利要求3所述的一种低噪声桥梁聚合物伸缩装置，其特征在于，所述折线沟槽(5)之间的表层(1)或底层(3)上的材料构成折线连杆柔性铰(11)链，所述折线连杆柔性铰(11)链包括呈折线形式交错布置的至少两个连接杆(10)，所述连接杆(10)之间通过柔性铰(11)连接。
  5. 根据权利要求2所述的一种低噪声桥梁聚合物伸缩装置，其特征在于，所述表层(1)、中间层(2)及底层(3)为分体式或整体式的预制件。
  6. 根据权利要求2所述的一种低噪声桥梁聚合物伸缩装置，其特征在于，所述中间层(2)位于表层(1)的底部且全面覆盖表层(1)或局部覆盖表层(1)。
  7. 根据权利要求1所述的一种低噪声桥梁聚合物伸缩装置，其特征在于，所述表层(1)及底层(3)是以聚氨酯弹性体，氢化苯乙烯嵌段共聚物弹性体，改性超高分子量聚乙烯、高密度聚乙烯、合成橡胶为材质；或是以聚氨酯弹性体，氢化苯乙烯嵌段共聚物弹性体，改性超高分子量聚乙烯、高密度聚乙烯、合成橡胶中的两种或多种任意组合的共混物或/和共聚物为材质，所述底层(3)还能够以聚脲、聚氨酯或环氧树脂为材质。
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