CN105586832A - Suspension type catwalk surface net mounting system - Google Patents
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
Description
技术领域 technical field
本发明涉及建筑设备领域,尤其是涉及一种悬挂式猫道面网安装系统。 The invention relates to the field of construction equipment, in particular to a hanging catwalk surface net installation system.
背景技术 Background technique
悬索桥,又名吊桥(suspensionbridge),指的是以通过索塔悬挂并锚固于两岸(或桥两端)的缆索(或钢链)作为上部结构主要承重构件的桥梁。其缆索几何形状由力的平衡条件决定,一般接近抛物线。从缆索垂下许多吊杆,把桥面吊住,在桥面和吊杆之间常设置加劲梁,同缆索形成组合体系,以减小活载所引起的挠度变形。 Suspension bridge, also known as suspension bridge, refers to a bridge with cables (or steel chains) suspended through towers and anchored on both banks (or both ends of the bridge) as the main load-bearing member of the upper structure. Its cable geometry is determined by the balance of forces and is generally close to a parabola. Many suspenders hang from the cables to hang the bridge deck. Stiffening beams are often set between the bridge deck and the suspenders to form a combined system with the cables to reduce the deflection deformation caused by the live load.
悬索桥主要由悬索、索塔、锚碇、吊杆、桥面系等部分组成。悬索桥的主要承重构件是悬索,它主要承受拉力,一般用抗拉强度高的钢材(钢丝、钢缆等)制作。一般在桥的两侧分别设置一根缆索,两端固定于岸边锚锭上,通过这两根主缆承受重量,在河面上设置两个间隔一定距离的高耸索塔,用于支撑主缆。两个索塔之间一般称之为主跨,两个索塔到岸边的距离一般称之为边跨。 Suspension bridges are mainly composed of suspension cables, cable towers, anchorages, suspenders, bridge deck systems and other parts. The main load-bearing component of the suspension bridge is the suspension cable, which mainly bears the tensile force, and is generally made of steel with high tensile strength (steel wire, steel cable, etc.). Generally, a cable is set on both sides of the bridge, and the two ends are fixed on the anchors on the bank. The two main cables bear the weight, and two towering cable towers are set on the river surface at a certain distance to support the main cable. . The distance between the two cable towers is generally called the main span, and the distance between the two cable towers and the shore is generally called the side span.
猫道是悬索桥施工时架设在主缆之下、平行于主缆的线形临时施工便道。它是施工人员进行施工作业的高空脚手架,是主缆系统乃至悬索桥整个上部结构的施工平台。施工人员在其上完成诸如索股牵引、调股、整形入鞍、紧缆、索夹及吊索安装、箱梁吊装及工地连接、主缆缠丝、防护涂装等重要任务。上下游各一条,断面通常呈U型,狭长且有一些摇晃,故称"猫道",英文为catway。它是悬索桥施工中极其重要的临时设施,大桥竣工后将被拆除。 The catwalk is a linear temporary construction access road that is erected under the main cable and parallel to the main cable during the construction of the suspension bridge. It is a high-altitude scaffold for construction workers to carry out construction work, and a construction platform for the main cable system and even the entire upper structure of the suspension bridge. On it, construction personnel complete important tasks such as cable strand traction, strand adjustment, saddle shaping, cable tightening, cable clamp and sling installation, box girder hoisting and site connection, main cable winding, protective coating and other important tasks. There is one upstream and one downstream, and the cross-section is usually U-shaped, long and narrow with some wobbling, so it is called "catway", and the English is catway. It is an extremely important temporary facility in the construction of the suspension bridge and will be demolished after the bridge is completed.
猫道系统一般由承重索(包括索端长度调节装置)、面层、栏杆和扶手、横向通道、抗风系统等组成。 The catwalk system is generally composed of load-bearing cables (including cable end length adjustment devices), surface layers, railings and handrails, transverse passages, and wind resistance systems.
承重索是为猫道结构的主要受力构件,通常是采用捻制的钢丝绳来制作。根据施工要求和国外的设计施工经验,一般按猫道成形后承重索的中心线低于主缆架设中心线1.5m左右设置。该距离的选用,除应充分考虑主缆架设时施工人员的操作方便外,更重要的是必须考虑索股的牵引、主缆的箍紧及涂装时使用特殊机械(如:紧缆机、缠丝机)的操作空间要求。 The load-bearing cable is the main force-bearing member of the catwalk structure, and it is usually made of twisted steel wire rope. According to construction requirements and foreign design and construction experience, it is generally set that the centerline of the load-bearing cable after the catwalk is formed is about 1.5m lower than the centerline of the main cable erection. In the selection of this distance, in addition to fully considering the convenience of the construction personnel during the erection of the main cable, more importantly, the traction of the strands, the tightening of the main cable and the use of special machinery (such as: cable tightening machine, Winding machine) operating space requirements.
猫道面层包括钢制网结构,分为上下两层,一粗一细,成为猫道面网。猫道面层的布置不仅应具有便于安全作业的结构构造,还应在选材时考虑满足猫道整体具有足够的刚度。对于作业空间的要求,猫道的设计宽度一般是取4.0m左右。同时设计猫道中心线与主缆中心线在竖向保持一致,这样在主缆成型、放松猫道承重索等一系列作业后,将猫道挂到主缆上易于保持平衡。 The catwalk surface layer includes a steel mesh structure, which is divided into upper and lower layers, one thick and one thin, and becomes the catwalk surface mesh. The layout of the catwalk surface should not only have a structural structure that is convenient for safe operation, but also should be considered to meet the overall rigidity of the catwalk when selecting materials. For the requirements of the working space, the design width of the catwalk is generally about 4.0m. At the same time, the centerline of the catwalk is designed to be vertically consistent with the centerline of the main cable, so that after a series of operations such as forming the main cable and loosening the load-bearing cables of the catwalk, it is easy to maintain balance when hanging the catwalk on the main cable.
猫道每隔几米设置栏杆立柱,在全长范围每侧栏杆上用钢丝绳设一根扶手索和一至二根防护索,扶手索主要作为工人行走的扶手,防护索主要用于固定侧面防护网,以策安全。侧面防护网采用高1.0m左右的大眼钢丝网。 The catwalk is equipped with railing posts every few meters, and a handrail cable and one or two protective cables are installed on each side of the railing in the full length range. The handrail cable is mainly used as a handrail for workers to walk, and the protective cable is mainly used to fix the side protection net. For safety. The side protective net adopts a large eye wire mesh with a height of about 1.0m.
猫道的横向通道可以满足上下游之间的猫道联系,方便施工人员和设备及材料的转移,并提高猫道自身的整体稳定性,增强其抗风能力,与主缆呈垂直。为降低恒载质量,横向天桥考虑采用钢管或方钢的桁架结构,并应进行结构强度验算。横向通道的面层及栏杆防护可与猫道面层布置相同。 The horizontal channel of the catwalk can meet the catwalk connection between the upstream and downstream, facilitate the transfer of construction personnel, equipment and materials, improve the overall stability of the catwalk itself, enhance its wind resistance, and be perpendicular to the main cable. In order to reduce the dead load mass, the horizontal overpass is considered to adopt a steel pipe or square steel truss structure, and the structural strength check calculation should be carried out. The surface layer and railing protection of the transverse passage can be arranged in the same way as the surface layer of the catwalk.
猫道的抗风系统,由于主缆的施工属高空作业,而且现在处于强风地带的跨海大桥的建设增多,所以风的影响变得尤为突出。为了施工期间猫道的抗风稳定性、足够的刚度及调整线形的需要,通常在猫道下方设抗风缆系统和横向天桥通道)来保证。由于种种原因不能设置抗风缆的,可增加横向天桥的密度或采用其他措施增强猫道的稳定性和刚度。猫道的总体刚度和稳定性与承重索的跨度、抗风缆的预张力和猫道的质量有关。猫道虽是施工过程的临时结构,但在使用过程中也有可能遭受强风和台风的袭击。为了保证猫道使用过程中的安全性,验证所设猫道的抗风能力,一般悬索桥的猫道结构也应做风洞试验和抗风稳定性分析和计算。另外在猫道上还应设置照明和警示设备,应该由施工单位根据使用和通航需要布设。 The wind resistance system of the catwalk, because the construction of the main cable is a high-altitude operation, and the construction of cross-sea bridges in strong wind areas is increasing, the impact of wind has become particularly prominent. In order to ensure the catwalk's wind resistance stability, sufficient rigidity and alignment adjustment during construction, a wind-resistant cable system and a horizontal overpass) are usually installed under the catwalk. If the wind-resistant cables cannot be installed due to various reasons, the density of the horizontal overpass can be increased or other measures can be used to enhance the stability and rigidity of the catwalk. The overall stiffness and stability of the catwalk are related to the span of the load-bearing cables, the pretension of the wind-resistant cables and the quality of the catwalk. Although the catwalk is a temporary structure during the construction process, it may also be attacked by strong winds and typhoons during use. In order to ensure the safety of the catwalk during use and verify the wind resistance of the catwalk, the catwalk structure of the general suspension bridge should also be subjected to wind tunnel tests and wind stability analysis and calculation. In addition, lighting and warning equipment should be installed on the catwalk, which should be arranged by the construction unit according to the needs of use and navigation.
在现有技术中,猫道的施工一般采用人工铺设,施工人员踩在猫道承重索上逐片铺设猫道面网以及栏杆立柱等,在高空作业,十分的危险,铺设效率底下,铺设工时长,铺设成本较高。 In the prior art, the construction of catwalks generally adopts manual laying. The construction personnel step on the load-bearing cables of catwalks to lay catwalk surface nets and railing columns one by one. Working at high altitudes is very dangerous, and the laying efficiency is low. The time is long and the laying cost is high.
基于此,本发明提供了一种悬挂式猫道面网安装系统以解决上述的技术问题。 Based on this, the present invention provides a suspended catwalk surface net installation system to solve the above technical problems.
发明内容 Contents of the invention
本发明的目的在于提供一种悬挂式猫道面网安装系统,以解决现有技术中铺设猫道面层工时长、成本高、效率低的技术问题。 The purpose of the present invention is to provide a suspended catwalk surface net installation system to solve the technical problems of long man-hours, high cost and low efficiency in laying the catwalk surface in the prior art.
在本发明的实施例中提供了一种悬挂式猫道面网安装系统,所述悬挂式猫道面网安装系统包括两个卷扬机、两个拽拉器、多条猫道承重索和多条横向通道; In an embodiment of the present invention, a suspended catwalk surface net installation system is provided, and the suspended catwalk surface net installation system includes two hoists, two pullers, multiple catwalk load-bearing cables and multiple horizontal channel;
所述多条猫道承重索与悬索桥的主缆平行安置;所述多条猫道承重索的位于同一平面上; The multiple catwalk load-bearing cables are placed in parallel with the main cable of the suspension bridge; the multiple catwalk load-bearing cables are located on the same plane;
多条所述横向通道与所述多条猫道承重索滑动连接;在所述多条猫道承重索上方,每条所述横向通道的一侧通过猫道面网连接多条横梁,多条所述横梁并行排列,并与所述横向通道平行;多条所述横梁与所述多条猫道承重索滑动连接,所述猫道面网与所述多条猫道承重索滑动连接; A plurality of said transverse passages are slidingly connected with said plurality of catwalk load-bearing cables; above said plurality of catwalk load-bearing cables, one side of each said transverse passage is connected with a plurality of crossbeams through a catwalk surface net, and a plurality of The crossbeams are arranged in parallel and parallel to the transverse channel; multiple crossbeams are slidably connected to the multiple catwalk load-bearing cables, and the catwalk surface net is slidably connected to the multiple catwalk load-bearing cables;
每条所述横梁下方悬挂有吊机负荷检验袋; A crane load inspection bag is hung below each beam;
两个所述拽拉器分别位于悬索桥的两个索塔顶,用于反向拉动多条所述横向通道; The two pullers are respectively located at the top of the two cable towers of the suspension bridge, and are used to reversely pull a plurality of the transverse passages;
两个所述卷扬机分别位于悬索桥的两个索塔顶,通过钢丝绳与多条所述横向通道连接。 The two hoists are respectively located at the top of the two cable towers of the suspension bridge, and are connected to multiple transverse passages through steel wire ropes.
可选的,每条所述横向通道和每条所述横梁下方均设置滑轮。 Optionally, pulleys are provided under each of the transverse passages and each of the beams.
可选的,多条所述横梁和所述猫道面网分别通过U型螺栓与所述多条猫道承重索卡接。 Optionally, the plurality of beams and the catwalk surface net are clamped to the plurality of catwalk load-bearing cables through U-shaped bolts respectively.
可选的,所述U型螺栓的螺母外侧的销空插装有开口销。 Optionally, cotter pins are inserted into the pin spaces outside the nuts of the U-shaped bolts.
可选的,多条所述横梁均采用型钢制成。 Optionally, the multiple beams are all made of section steel.
可选的,所述吊机负荷检验袋采用水袋或者沙袋。 Optionally, the crane load inspection bag is a water bag or a sandbag.
可选的,所述吊机负荷检验袋的体积为3—4m3。 Optionally, the crane load inspection bag has a volume of 3-4m3.
可选的,所述横向通道为钢管或方刚的桁架结构。 Optionally, the transverse channel is a steel pipe or square rigid truss structure.
可选的,所述多条猫道承重索的采用钢制材料。 Optionally, the multiple catwalk load-bearing cables are made of steel.
可选的,所述多条猫道承重索的数量设置为8条。 Optionally, the number of the multiple catwalk load-bearing cables is set to 8.
本发明提供的所述悬挂式猫道面网安装系统,在铺设时,先设计位置将多条猫道承重索两端固定在两岸,中部固定在索塔顶。 The suspended catwalk surface net installation system provided by the present invention, when laying, first design the position to fix the two ends of a plurality of catwalk load-bearing cables on both banks, and fix the middle part on the top of the cable tower.
首先在地面将组成猫道面层的各种材料,如防滑木条,面层网、角钢等,按设计位置绑扎好,用塔吊将面层吊至塔顶工作平台上的面层临时存放台架上。然后将需要的横梁等吊放到变位下拉系统面侧安装工作平台上。将多条所述横向通道在两岸边拼装,由主塔塔吊提升,分别提升至两个索塔的顶部,然后与多根猫道承重索安装在一起,然后将多条横梁通过猫道面网连接在一起,多个横梁下方挂上吊机负荷检验袋作为配重,然后将多条横梁以及猫道面网与多条猫道承重索连接在一起。在所述横向通道、吊机负荷检验袋、和多条横梁的重力下,开始下滑。在施工过程中,可以同时有向两个索塔的两侧同时进行横向通道的下滑。由于索塔顶两侧坡度较陡,面网等依靠自重便能下滑,为防止面网下滑速度太快,在索塔顶门架上布设卷扬机反拉,控制下滑速度,反拉卷扬机钢绳依次连结在面层网横梁上。当中跨最先下滑的两个横向通道及面网下滑至坡度平缓地段,利用自重不能下滑时,利用拽拉器牵拉绳头对横向通道进行牵拉,使中跨的两个横向通道合拢。然后逐一下滑横向通道,最终与横向通道连接的所有猫道面网连接在一起,组成一个连接的通道,然后再逐一进行固定。边跨的横向通道下滑到位以后,由锚碇处再人工向上逐片铺设面网与横向通道接拢,铺装时先底网后侧网,直至铺完整个边跨猫道。猫道面网下滑铺设时,可同时组装上栏杆、侧面网,并向内倒置在面网上,同面网一起下滑,然后再竖立并固定在面网上。 Firstly, on the ground, bind the various materials that make up the surface of the catwalk, such as non-slip wooden strips, surface mesh, angle steel, etc., according to the designed position, and use the tower crane to lift the surface to the temporary storage platform for the surface on the working platform on the top of the tower on the shelf. Then hoist the required beams etc. onto the working platform where the displacement pull-down system is installed on the face side. Assemble a plurality of the above-mentioned transverse channels on both sides of the bank, lift them up by the tower crane of the main tower, and lift them to the top of the two cable towers respectively, and then install them together with a plurality of catwalk load-bearing cables, and then pass a plurality of crossbeams through the catwalk surface net Connect together, hang the crane load inspection bag under the multiple beams as a counterweight, and then connect multiple beams and catwalk surface nets with multiple catwalk load-bearing cables. Under the weight of the transverse channel, the crane load inspection bag, and the plurality of beams, the slide begins. During the construction process, the horizontal channel can be simultaneously descended to both sides of the two cable towers. Due to the steep slope on both sides of the cable tower top, the surface net can slide down by its own weight. In order to prevent the surface net from falling too fast, a winch is installed on the top of the cable tower to control the sliding speed, and the steel ropes of the reverse pull hoist are connected in turn. On the surface mesh beams. The first two horizontal passages and surface nets in the midspan slide down to a gentle slope. When the self-weight cannot slide down, use the puller to pull the rope head to pull the horizontal passages, so that the two horizontal passages in the midspan are closed. Then slide down the horizontal channel one by one, and finally connect all the catwalk surface nets connected with the horizontal channel to form a connected channel, and then fix them one by one. After the lateral channel of the side span is slid down into place, the surface netting is manually laid piece by piece from the anchorage to connect with the transverse channel. When the catwalk surface net is laid down, the upper railing and the side net can be assembled at the same time, and turned inward on the surface net, slide down together with the surface net, and then erected and fixed on the surface net.
本申请的所述悬挂式猫道面网安装系统,不再需要人工逐片铺设猫道面网,通过增设相对于猫道承重索能够滑动的横梁,并增加配重,将横向通道也设为可滑动。通过自身重量带动猫道面网滑动,直至铺满整个猫道承重索,消耗时间短,效率高,铺设成本较低。 The suspended catwalk surface net installation system of the present application no longer needs to manually lay catwalk surface nets piece by piece, by adding beams that can slide relative to the catwalk load-bearing cables, and increasing the counterweight, the transverse passage is also set as Can slide. The catwalk surface net is driven to slide by its own weight until the entire catwalk is covered with load-bearing cables, which consumes less time, is more efficient, and lowers the laying cost.
基于此,本发明较之原有技术,具有消耗时间短,效率高,铺设成本较低的优点。 Based on this, compared with the prior art, the present invention has the advantages of short consumption time, high efficiency and low laying cost.
附图说明 Description of drawings
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图作简单的介绍,显而易见的,下面描述中的附图是本发明的一些实施方式,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 more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.
图1为实施例一结构示意图; Fig. 1 is the structural representation of embodiment one;
图2为实施例一俯视图; Fig. 2 is a top view of Embodiment 1;
图3为横向通道主视图; Fig. 3 is a front view of the transverse channel;
图4为横梁与猫道面网的连接示意图。 Figure 4 is a schematic diagram of the connection between the beam and the catwalk surface net.
附图标记: Reference signs:
1-猫道承重索;2-横向通道;3-猫道面网; 1- catwalk load-bearing cable; 2- horizontal passage; 3- catwalk surface net;
4-横梁;5-索塔。 4- beam; 5- tower.
具体实施方式 detailed description
下面将结合附图对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例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 technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。 In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体的连接;可以是机械连接,也可以是电焊连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。 In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be mechanical connection or electric welding connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
实施例一 Embodiment one
如图1-4所示,在本实施例中提供了一种悬挂式猫道面网安装系统,所述悬挂式猫道面网安装系统包括两个卷扬机、两个拽拉器、多条猫道承重索1和多条横向通道2; As shown in Figures 1-4, a suspended catwalk surface net installation system is provided in this embodiment, and the suspended catway surface net installation system includes two hoists, two pullers, multiple catwalk A load-bearing cable 1 and a plurality of transverse passages 2;
所述多条猫道承重索1与悬索桥的主缆平行安置;所述多条猫道承重索1的位于同一平面上; The multiple catwalk load-bearing cables 1 are placed in parallel with the main cable of the suspension bridge; the multiple catwalk load-bearing cables 1 are located on the same plane;
多条所述横向通道2与所述多条猫道承重索1滑动连接;在所述多条猫道承重索1上方,每条所述横向通道2的一侧通过猫道面网3连接多条横梁4,多条所述横梁4并行排列,并与所述横向通道2平行;多条所述横梁4与所述多条猫道承重索1滑动连接,所述猫道面网3与所述多条猫道承重索1滑动连接; A plurality of said transverse channels 2 are slidably connected with said plurality of catwalk load-bearing cables 1; above said plurality of catwalk load-bearing cables 1, one side of each said transverse channel 2 is connected to multiple catwalk surface nets 3 A crossbeam 4, a plurality of crossbeams 4 are arranged in parallel, and are parallel to the transverse channel 2; a plurality of crossbeams 4 are slidably connected with the plurality of catwalk load-bearing cables 1, and the catwalk surface net 3 is connected to the The multiple catwalk load-bearing cables 1 are slidingly connected;
每条所述横梁4下方悬挂有吊机负荷检验袋; A crane load inspection bag is suspended below each beam 4;
两个所述拽拉器分别位于悬索桥的两个索塔5塔顶,用于反向拉动多条所述横向通道2; The two pullers are respectively located at the top of the two cable towers 5 of the suspension bridge, and are used to reversely pull a plurality of the transverse passages 2;
两个所述卷扬机分别位于悬索桥的两个索塔5塔顶,通过钢丝绳与多条所述横向通道2连接。 The two winches are respectively located at the tops of the two cable towers 5 of the suspension bridge, and are connected to a plurality of the transverse passages 2 by wire ropes.
本发明提供的所述悬挂式猫道面网4安装装置,在铺设时,先设计位置将多条猫道承重索1两端固定在两岸,中部固定在索塔顶。 The installation device of the suspended catwalk surface net 4 provided by the present invention, when laying, first design the position to fix the two ends of a plurality of catwalk load-bearing cables 1 on both sides, and the middle part is fixed on the cable tower top.
首先在地面将组成猫道面层的各种材料,如防滑木条,面层网、角钢等,按设计位置绑扎好,用塔吊将面层吊至塔顶工作平台上的面层临时存放台架上。然后将需要的横梁4等吊放到变位下拉系统面侧安装工作平台上。将多条所述横向通道2在两岸边拼装,由主塔塔吊提升,分别提升至两个索塔5的顶部,然后与多根猫道承重索1安装在一起,然后将多条横梁4通过猫道面网3连接在一起,多个横梁4下方挂上吊机负荷检验袋作为配重,然后将多条横梁4以及猫道面网3与多条猫道承重索1连接在一起。在所述横向通道2、吊机负荷检验袋、和多条横梁4的重力下,开始下滑。在施工过程中,可以同时有向两个索塔5的两侧同时进行横向通道2的下滑。由于塔顶两侧坡度较陡,面网等依靠自重便能下滑,为防止面网下滑速度太快,在塔顶门架上布设卷扬机反拉,控制下滑速度,反拉卷扬机钢绳依次连结在面层网横梁4上。当中跨最先下滑的两个横向通道2及面网下滑至坡度平缓地段,利用自重不能下滑时,利用拽拉器牵拉绳头对横向通道2进行牵拉,使中跨的两个横向通道2合拢。然后逐一下滑横向通道2,最终与横向通道2连接的所有猫道面网3连接在一起,组成一个连接的通道,然后再逐一进行固定。边跨的横向通道2下滑到位以后,由锚碇处再人工向上逐片铺设面网与横向通道2接拢,铺装时先底网后侧网,直至铺完整个边跨猫道。猫道面网3下滑铺设时,可同时组装上栏杆、侧面网,并向内倒置在面网上,同面网一起下滑,然后再竖立并固定在面网上。 Firstly, on the ground, bind the various materials that make up the surface of the catwalk, such as non-slip wooden strips, surface mesh, angle steel, etc., according to the designed position, and use the tower crane to lift the surface to the temporary storage platform for the surface on the working platform on the top of the tower on the shelf. Then the required beams 4 etc. are hoisted onto the installation work platform on the face side of the displacement pull-down system. A plurality of said transverse passages 2 are assembled on both banks, lifted by the tower crane of the main tower, respectively lifted to the tops of the two cable towers 5, and then installed together with a plurality of catwalk load-bearing cables 1, and then a plurality of beams 4 are passed through The catwalk surface net 3 is connected together, and the load inspection bag of the crane is hung on the bottom of the plurality of crossbeams 4 as a counterweight, and then the plurality of crossbeams 4 and the catwalk surface net 3 are connected with a plurality of catwalk load-bearing cables 1 . Under the gravity of the transverse channel 2, the load inspection bag of the crane, and a plurality of beams 4, it begins to slide down. During the construction process, the transverse channel 2 can be slid down to both sides of the two cable towers 5 at the same time. Due to the steep slope on both sides of the top of the tower, the surface net can slide down by its own weight. In order to prevent the surface net from falling too fast, a hoist is installed on the tower top gantry to control the speed of the slide. The steel ropes of the reverse hoist are connected to the surface in turn Lay net beam 4 on. The two transverse passages 2 that slide down first in the midspan and the surface net slide down to a gentle slope. When the self-weight cannot slide down, use the puller to pull the rope to pull the transverse passage 2, so that the two transverse passages in the midspan 2 close. Then slide down the transverse channel 2 one by one, and finally connect all the catwalk surface nets 3 connected with the transverse channel 2 to form a connected channel, and then fix them one by one. After the lateral channel 2 of the side span slides into place, the surface netting is manually laid up piece by piece from the anchorage to connect with the lateral channel 2. When paving, the bottom net is first followed by the side net until the entire side span catwalk is paved. When the catwalk surface net 3 slides and lays, the upper railing and the side net can be assembled at the same time, and turned inward on the surface net, slide down together with the surface net, then erect and fix on the surface net.
本申请的所述悬挂式猫道面网3安装装置,不再需要人工逐片铺设猫道面网3,通过增设相对于猫道承重索1能够滑动的横梁4,并增加配重,将横向通道2也设为可滑动。通过自身重量带动猫道面网3滑动,直至铺满整个猫道承重索1,消耗时间短,效率高,铺设成本较低。 The installation device of the suspended catwalk surface net 3 of the present application no longer needs to manually lay the catwalk surface net 3 one by one. Channel 2 is also set to slide. The catwalk surface net 3 is driven to slide by its own weight until the entire catwalk load-bearing cable 1 is covered, the time consumption is short, the efficiency is high, and the laying cost is low.
基于此,本发明较之原有技术,具有消耗时间短,效率高,铺设成本较低的优点。 Based on this, compared with the prior art, the present invention has the advantages of short consumption time, high efficiency and low laying cost.
如图……,本实施例的可选方案中,每条所述横向通道2和每条所述横梁4下方均设置滑轮。 As shown in the figure..., in the optional solution of this embodiment, pulleys are arranged under each of the transverse passages 2 and each of the beams 4 .
通过滑轮使所述横向通道2与所述横梁4与所述猫道承重索1滑动连接,成本较低,装置简单,使用方便。 The transverse channel 2 is slidably connected with the crossbeam 4 and the catwalk load-bearing cable 1 through a pulley, which has low cost, simple device and convenient use.
本实施例的可选方案中,多条所述横梁4和所述猫道面网3分别通过U型螺栓与所述多条猫道承重索1卡接。 In an optional solution of this embodiment, the plurality of crossbeams 4 and the catwalk surface net 3 are clamped to the plurality of catwalk load-bearing cables 1 through U-shaped bolts, respectively.
U型螺栓,即骑马螺栓,是非标准件,形状为U形所以也称为U型螺栓,两头有螺纹可与螺帽结合,主要用于固定管状物如水管或片状物如汽车的板簧,由于其固定物件的方式像人骑在马上一样,故称为骑马螺栓。用U型螺栓将猫道面网3与横梁4卡在猫道承重索1上,螺栓不宜过紧,以确保面层能在承重索上自由滑动。 U-shaped bolts, that is, saddle bolts, are non-standard parts. They are U-shaped, so they are also called U-shaped bolts. There are threads at both ends that can be combined with nuts. They are mainly used to fix tubular objects such as water pipes or sheet objects such as automobile leaf springs. , because the way of fixing objects is like a person riding on a horse, so it is called a riding bolt. Use U-shaped bolts to clamp the catwalk surface net 3 and the beam 4 on the catwalk load-bearing cable 1. The bolts should not be too tight to ensure that the surface layer can slide freely on the load-bearing cable.
进一步的,所述U型螺栓的螺母外侧的销空插装有开口销。 Further, cotter pins are inserted into the pin holes outside the nuts of the U-shaped bolts.
对U型螺栓的螺母外侧的销孔插上开口销,防止在面层滑动过程中螺母脱落 Insert a cotter pin into the pin hole outside the nut of the U-shaped bolt to prevent the nut from falling off during the sliding process of the surface layer
进一步的,多条所述横梁4均采用型钢制成。 Further, the multiple beams 4 are all made of section steel.
型钢是一种有一定截面形状和尺寸的条型钢材。强度较高,且加工方便,有标准件。 Sectional steel is a bar-shaped steel with a certain cross-sectional shape and size. High strength, easy processing, and standard parts.
进一步的,所述吊机负荷检验袋采用水袋或者沙袋。 Further, the crane load inspection bag adopts a water bag or a sandbag.
水袋或者沙袋取材容易,使用方便,节省时间。 Water bags or sandbags are easy to obtain materials, convenient to use, and save time.
进一步的,所述吊机负荷检验袋的体积为3—4m3。 Further, the volume of the crane load inspection bag is 3-4m 3 .
过重的吊机负荷检验袋滑动时速度过快,难以控制。 Overweight crane load inspection bags slide too fast and are difficult to control.
本实施例的可选方案中,所述横向通道2为钢管或方刚的桁架结构。 In an optional solution of this embodiment, the transverse channel 2 is a steel pipe or a square rigid truss structure.
采用现有的衍架结构,技术成熟,成本较低。 Using the existing truss structure, the technology is mature and the cost is low.
本实施例的可选方案中,所述多条猫道承重索1的采用钢制材料。 In an optional solution of this embodiment, the multiple catwalk load-bearing cables 1 are made of steel.
钢制材料承重能力强,能够承载足够的重量。 The steel material has strong load-bearing capacity and can carry enough weight.
进一步的,所述多条猫道承重索1的数量设置为8条。 Further, the number of the multiple catwalk load-bearing cables 1 is set to 8.
设置8根猫道承重索1,保证其承载能力,提供足够的支撑。 Set 8 catwalk load-bearing cables 1 to ensure its bearing capacity and provide sufficient support.
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。 Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.
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CN110593125A (en) * | 2019-10-11 | 2019-12-20 | 中交二公局第五工程有限公司 | Suspension bridge catwalk system |
CN110939069A (en) * | 2019-12-11 | 2020-03-31 | 湖北省路桥集团有限公司 | Construction method of suspension bridge catwalk |
CN114108480A (en) * | 2021-12-01 | 2022-03-01 | 中交第二航务工程局有限公司 | Full-section downward-sliding erection structure of suspension bridge catwalk and construction method thereof |
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CN107476208A (en) * | 2017-08-28 | 2017-12-15 | 中交公局第三工程有限公司 | A kind of end bay cat road changes lifting rope and removes device and method |
CN107476208B (en) * | 2017-08-28 | 2023-07-07 | 中交一公局第三工程有限公司 | Device and method for dismantling hoisting ropes changed from side-span catwalk |
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CN110593125A (en) * | 2019-10-11 | 2019-12-20 | 中交二公局第五工程有限公司 | Suspension bridge catwalk system |
CN110939069A (en) * | 2019-12-11 | 2020-03-31 | 湖北省路桥集团有限公司 | Construction method of suspension bridge catwalk |
CN110939069B (en) * | 2019-12-11 | 2022-02-08 | 湖北省路桥集团有限公司 | Construction method of suspension bridge catwalk |
CN114108480A (en) * | 2021-12-01 | 2022-03-01 | 中交第二航务工程局有限公司 | Full-section downward-sliding erection structure of suspension bridge catwalk and construction method thereof |
CN114108480B (en) * | 2021-12-01 | 2023-05-26 | 中交第二航务工程局有限公司 | Suspension bridge catwalk full-section lower sliding frame arrangement structure and construction method thereof |
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