CN103742168B - Cast anchor hole, switch hole independence lining trolley in tunnel - Google Patents
Cast anchor hole, switch hole independence lining trolley in tunnel Download PDFInfo
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Abstract
本发明公开了一种铁路客运专线双线隧道下锚洞/开关洞独立衬砌台车,它包括模板总成(1)、拱架加宽机构(2)、托架总成(3)、中线调节机构(4)、门架总成(5)、机械支撑机构(6)、起升机构(7)、行走机构(8)及其它辅助结构;其中门架总成(5)的左右两侧通过机械支撑机构(6)与模板总成(1)的两侧连接,门架总成(5)的顶部设置有中线调节机构(4),在中线调节机构(4)上方有拱架加宽机构(2),拱架加宽机构(2)上方有托架总成(3),托架总成(3)与模板总成(1)的拱部连接。本发明安装、拆卸方便,混凝土外观质量好,节约成本。
The invention discloses an independent lining trolley for the lower anchor hole/switch hole of a double-track tunnel on a railway passenger dedicated line, which includes a formwork assembly (1), an arch widening mechanism (2), a bracket assembly (3), a central Adjusting mechanism (4), mast assembly (5), mechanical support mechanism (6), lifting mechanism (7), traveling mechanism (8) and other auxiliary structures; the left and right sides of the mast assembly (5) The mechanical support mechanism (6) is connected to both sides of the formwork assembly (1), and the top of the door frame assembly (5) is provided with a centerline adjustment mechanism (4), and there is an arch widening above the centerline adjustment mechanism (4) Mechanism (2), bracket assembly (3) is arranged above the arch frame widening mechanism (2), and bracket assembly (3) is connected with the arch of formwork assembly (1). The invention is convenient to install and disassemble, has good concrete appearance quality and saves cost.
Description
技术领域 technical field
本发明涉及一种在隧道混凝土衬砌施工中,用于特殊的断面净空加宽(可实现线路左、右侧换边)的衬砌,简要的说就是一种下锚洞、开关洞独立衬砌台车。 The invention relates to a kind of lining used in the construction of tunnel concrete lining, which is used for widening the special section headroom (which can realize the left and right sides of the line) .
背景技术 Background technique
目前我国铁路客运专线均为电气化高速铁路,为满足接触网、通信信号等专业技术要求,而设计的特殊衬砌断面的下锚洞和开关洞(较正常衬砌断面分别加宽70cm,130cm)。传统施工过程中,采用满堂支架法,施工工序包括立型钢拱架、拼装钢模板、搭设脚手架、浇筑、拆卸、转场,该施工方法循环时间长、加固困难易跑模,且在施工过程中行车不便,作业面文明施工差、混凝土外观质量无法保证,同时在加固过程中需采用大量的脚手架钢管和扣件,耗费人工,增加了成本;采用衬砌台车上安装内盒模板也存在质量难以保证、操作空间小、工效极低等缺陷,导致拱墙衬砌速度较慢,容易导致隧道安全步距超标。上述工法不能满足客运专线对安全、质量、外观的要求。因此对隧道下锚洞、开关洞衬砌施工工艺的改进势在必行。 At present, my country's railway passenger dedicated lines are all electrified high-speed railways. In order to meet professional technical requirements such as catenary and communication signals, the lower anchor hole and switch hole of the special lining section are designed (70cm and 130cm wider than the normal lining section, respectively). In the traditional construction process, the full house support method is adopted. The construction process includes vertical steel arch frame, assembled steel formwork, erecting scaffolding, pouring, dismantling, and transition. It is inconvenient to drive, the civilized construction of the working surface is poor, and the quality of the concrete appearance cannot be guaranteed. At the same time, a large number of scaffolding steel pipes and fasteners need to be used in the reinforcement process, which consumes labor and increases costs. The inner box formwork installed on the lining trolley also has problems in quality. Defects such as guarantee, small operating space, and extremely low work efficiency lead to slow lining of the arch wall, which easily leads to exceeding the safety step distance of the tunnel. The above-mentioned construction methods cannot meet the safety, quality and appearance requirements of the passenger dedicated line. Therefore, it is imperative to improve the lining construction technology of tunnel anchor holes and switch holes.
发明内容 Contents of the invention
本发明要解决的技术问题是:提供一种安全、高效、质优的下锚洞、开关洞独立衬砌台车,以克服现有技术存在的施工时间长、工效低等不足。 The technical problem to be solved by the present invention is to provide a safe, high-efficiency, and high-quality independent lining trolley for anchor holes and switch holes, so as to overcome the shortcomings of the prior art such as long construction time and low work efficiency.
本发明所采用的技术方案为:它包括模板总成、拱架加宽机构、托架总成、中线调节机构、门架总成、机械支撑机构、起升机构、行走机构及其它辅助结构;其中门架总成的左右两侧通过机械支撑机构与模板总成的两侧连接,门架总成的顶部设置有中线调节机构,在中线调节机构上方有拱架加宽机构,拱架加宽机构上方有托架总成,托架总成与模板总成的拱部连接。 The technical solution adopted in the present invention is: it includes formwork assembly, arch frame widening mechanism, bracket assembly, centerline adjustment mechanism, door frame assembly, mechanical support mechanism, lifting mechanism, walking mechanism and other auxiliary structures; Among them, the left and right sides of the gantry assembly are connected with the two sides of the formwork assembly through a mechanical support mechanism, the top of the gantry assembly is provided with a center line adjustment mechanism, and there is an arch widening mechanism above the center line adjustment mechanism, and the arch frame is widened. There is a bracket assembly above the mechanism, and the bracket assembly is connected with the arch of the formwork assembly.
模板总成由标准模板、非标准模板、开窗模板、注浆模板、下锚洞/开关洞堵头模板共同组成,模板间采用U形卡连接,模板与拱架用螺栓连接。非标准模板用于有堵头模板处,开窗模板间隔一定高度用于提供一个混凝土灌注口,注浆模板安于台车顶部用于混凝土的收尾灌注及注浆;下锚洞堵头模板和标准模板、非标准模板、开窗模板、注浆模板共同组成下锚洞衬砌台车;开关洞堵头模板和标准模板、非标准模板、开窗模板、注浆模板共同组成开关洞衬砌台车。下锚洞堵头模板和开关洞堵头模板不同时存在。 The formwork assembly is composed of standard formwork, non-standard formwork, window formwork, grouting formwork, anchor hole/switch hole plug formwork, the formwork is connected by U-shaped clamps, and the formwork and arch frame are connected by bolts. The non-standard formwork is used at the place where there is a plug formwork, and the window formwork is spaced at a certain height to provide a concrete pouring port. The grouting formwork is installed on the top of the trolley for the final pouring and grouting of the concrete; the lower anchor hole plug formwork and The standard formwork, non-standard formwork, window formwork, and grouting formwork together form the anchor hole lining trolley; the switch hole plug formwork, standard formwork, non-standard formwork, window formwork, and grouting formwork together form the switch hole lining trolley . The anchor hole plug template and the switch hole plug template do not exist at the same time.
门架总成包括立柱、下纵梁、斜支撑、上横梁、中横梁、小纵梁。门架总成为:在两平行下纵梁上装有立柱,在同一下纵梁的共面立柱顶部装有上横梁,中上部装有中横梁,斜支撑连接立柱与中横梁,小纵梁将同一下纵梁上的立柱连接成一体。 The mast assembly includes columns, lower longitudinal beams, oblique supports, upper beams, middle beams, and small longitudinal beams. The gantry assembly is as follows: columns are installed on two parallel lower longitudinal beams, upper beams are installed on the top of the coplanar columns of the same lower longitudinal beams, middle beams are installed on the middle and upper parts, diagonal supports connect the columns and middle beams, and the small longitudinal beams will be the same The uprights on the lower side members are connected into one piece.
托架总成包括模板拱架、模板立柱、模板横梁及上纵梁,它与拱模板连成整体桁架结构,均为工字形梁结构。模板拱架分为边模拱架及顶模拱架,边模拱架与顶模拱架为铰接,模板横梁两端与顶模拱架相连成弓形,模板立柱在竖向将顶模拱架与模板横梁连成一体。 The bracket assembly includes formwork arches, formwork columns, formwork beams and upper longitudinal beams, which are connected with the arch formwork to form an integral truss structure, all of which are I-shaped beam structures. Formwork arches are divided into side formwork arches and top formwork arches. The side formwork arches and top formwork arches are hinged. The two ends of the formwork beams are connected to the top formwork arches to form a bow. Integrate with formwork beams.
行走机构包括四个单轮,分别设置在滑动支柱之下。 The running mechanism includes four single wheels, which are respectively arranged under the sliding pillars.
起升机构包括焊于台车两端立柱侧面的支撑座,在支撑座下有滑动立柱,在支撑座与滑动立柱间上设置机械千斤顶,滑动立柱在滑动套里滑动。 The hoisting mechanism includes support seats welded to the sides of the columns at both ends of the trolley, a sliding column is arranged under the support seat, a mechanical jack is arranged between the support seat and the sliding column, and the sliding column slides in the sliding sleeve.
中线调节机构包括机械千斤顶、安装在上纵梁上的滚轮、焊于上横梁上的滑轨,机械千斤顶安装在支撑座上,支撑座焊于上横梁上。 The center line adjustment mechanism includes a mechanical jack, rollers installed on the upper longitudinal beam, and slide rails welded on the upper beam. The mechanical jack is installed on the support seat, and the support seat is welded on the upper beam.
拱架加宽机构包括模板横梁套管、下锚洞/开关洞模板横梁、滚轮,多个滚轮分别安装在模板横梁套管上及上纵梁上。 The widening mechanism of the arch frame includes the formwork beam casing, the lower anchor hole/switch hole formwork beam, and rollers, and a plurality of rollers are installed on the formwork beam casing and the upper longitudinal beam respectively.
机械支撑系统包括机械螺旋丝杆、机械螺旋丝杆支撑通梁。 The mechanical support system includes a mechanical screw rod, and the mechanical screw rod supports the beam.
其它辅助结构包括工作平台、楼梯。 Other auxiliary structures include working platforms, stairs.
通过更换部分模板支撑拱架总成来实现下锚洞、开关洞变径断面衬砌,通过模板横梁套筒内模板横梁的收回、伸出来实现不拆除拱架换侧加宽衬砌的目的。 By replacing part of the formwork supporting arch assembly, the lower anchor hole and switch hole are realized. The purpose of widening the lining without removing the arch is achieved by retracting and extending the formwork beam in the formwork beam sleeve.
在实际使用中,其具有如下技术优势: In actual use, it has the following technical advantages:
1、独立衬砌台车具有定位简单、拼装速度快,转场方便的特点。台车一次拼装完成(5人7天可完成本独立衬砌台车拼装),混凝土衬砌后只需收回拱架加宽段拆除台车顶部调节段的情况下(一天时间)可实现在正洞衬砌段行走,进行下次台车就位。而采用满堂支架施工工艺时需反复搭拆脚手架,相比之下采用独立衬砌台车在耗费人工较小的情况下大大缩短了循环时间,具有明显的技术和经济效益优势; 1. The independent lining trolley has the characteristics of simple positioning, fast assembly speed and convenient transition. The trolley is assembled once (5 people can complete the independent lining trolley assembly in 7 days), after the concrete lining, only need to retract the widening section of the arch frame and dismantle the top adjustment section of the trolley (one day) can realize the lining in the front hole Walk in one section, and carry out the next time the trolley is in place. However, when using the construction technology of full hall support, it is necessary to repeatedly build and dismantle the scaffolding. In contrast, the use of independent lining trolleys greatly shortens the cycle time while consuming less labor, and has obvious advantages in technical and economic benefits;
2、采用独立衬砌台车施工,通过模板横梁套管内模板横梁的滑动解决了满堂支架法以及衬砌台车外侧安装内盒模板施工中不同侧向加宽所带来的定位、安拆复杂,模板安装、加固困难,易跑模、变形,不易捣固、行车不便等技术难题,确保了下锚洞、开关洞施工的安全质量; 2. The independent lining trolley is used for construction, and the sliding of the formwork beam inside the formwork beam casing solves the complex positioning, installation and disassembly caused by the full-house support method and the installation of the inner box formwork on the outside of the lining trolley. Difficult installation and reinforcement, easy mold run, deformation, difficult tamping, inconvenient driving and other technical problems ensure the safety and quality of the construction of anchor holes and switch holes;
3、独立衬砌台车前后各加装1米的正常段标准模板,可安装下锚洞、开关洞堵头模板,每隔一定距离设有开窗模板,同时预留注浆孔,混凝土浇筑后外观质量美观,整体性较好,结构尺寸满足设计要求; 3. The front and rear of the independent lining trolley are equipped with 1-meter normal section standard templates, which can be installed with lower anchor holes and switch hole plug templates. There are window templates at certain distances, and grouting holes are reserved at the same time. After concrete pouring The appearance quality is beautiful, the integrity is good, and the structural size meets the design requirements;
4、独立衬砌台车在下锚洞、开关洞施工完成后,只需将下锚洞总成更换成开关洞总成后即可进行开关洞混凝土施工,可实现“一车多用”具有较强的适用性和可推广性。 4. After the construction of the lower anchor hole and the switch hole is completed by the independent lining trolley, it only needs to replace the lower anchor hole assembly with the switch hole assembly to carry out the concrete construction of the switch hole, which can realize "one car with multiple purposes" and has a strong Applicability and generalizability.
附图说明 Description of drawings
图1为本发明的结构示意图、主视图; Fig. 1 is structural representation, front view of the present invention;
图2为本发明的结构示意图、侧视图; Fig. 2 is a structural representation and a side view of the present invention;
图3为本发明的结构示意图、立体图; Fig. 3 is a schematic structural view and a perspective view of the present invention;
图4为本发明的部分结构示意图、立体图,该图示意出本发明除了模板总成、拱架加宽机构、托架总成、机械支撑机构以外的结构。 Fig. 4 is a schematic diagram and perspective view of part of the structure of the present invention, which shows the structure of the present invention except the formwork assembly, arch widening mechanism, bracket assembly, and mechanical support mechanism.
图5为本发明中线调节机构详图。 Fig. 5 is a detailed diagram of the midline adjustment mechanism of the present invention.
图6为本发明作业步骤流程图。 Fig. 6 is a flowchart of the working steps of the present invention.
具体实施方式 detailed description
本发明的实施例:它包括模板总成1、拱架加宽机构2、托架总成3、中线调节机构4、门架总成5、机械支撑机构6、起升机构7、行走机构8及其它辅助结构;其中门架总成5的左右两侧通过机械支撑机构6与模板总成1的两侧连接,门架总成5的顶部设置有中线调节机构4,在中线调节机构4上方有拱架加宽机构2,拱架加宽机构2上方有托架总成3,托架总成3与模板总成1的拱部连接。 Embodiment of the present invention: it includes a formwork assembly 1, an arch widening mechanism 2, a bracket assembly 3, a center line adjustment mechanism 4, a door frame assembly 5, a mechanical support mechanism 6, a lifting mechanism 7, and a walking mechanism 8 and other auxiliary structures; wherein the left and right sides of the gantry assembly 5 are connected to both sides of the formwork assembly 1 through a mechanical support mechanism 6, and the top of the gantry assembly 5 is provided with a centerline adjustment mechanism 4, above which the centerline adjustment mechanism 4 There is an arch widening mechanism 2, and a bracket assembly 3 is arranged above the arch widening mechanism 2, and the bracket assembly 3 is connected with the arch of the formwork assembly 1.
模板总成1由标准模板16、非标准模板14、开窗模板13、注浆模板11、下锚洞/开关洞堵头模板15共同组成,模板间采用U形卡连接,模板与拱架用螺栓连接。非标准模板14用于有堵头模板处,开窗模板13间隔一定高度用于提供一个混凝土灌注口,注浆模板11安于台车顶部用于混凝土的收尾灌注及注浆;下锚洞堵头模板和标准模板16、非标准模板14、开窗模板13、注浆模板11共同组成下锚洞衬砌台车;开关洞堵头模板和标准模板16、非标准模板14、开窗模板13、注浆模板11共同组成开关洞衬砌台车。下锚洞堵头模板与开关洞堵头模板不同时存在。 Formwork assembly 1 is composed of standard formwork 16, non-standard formwork 14, window formwork 13, grouting formwork 11, anchor hole/switch hole plug formwork 15, the formwork is connected by U-shaped card, and the formwork and arch are used Bolted. The non-standard formwork 14 is used at the formwork with plugs, the window formwork 13 is spaced at a certain height to provide a concrete pouring port, and the grouting formwork 11 is installed on the top of the trolley for the final pouring and grouting of the concrete; the lower anchor hole plugging The head formwork and standard formwork 16, non-standard formwork 14, window formwork 13, and grouting formwork 11 together form an anchor hole lining trolley; switch hole plug formwork and standard formwork 16, non-standard formwork 14, window formwork 13, The grouting formwork 11 jointly forms the switch hole lining trolley. The anchor hole plug template and the switch hole plug template exist at the same time.
门架总成5包括立柱28、下纵梁23、斜支撑24、上横梁17、中横梁25、小纵梁22,下纵梁23为箱型结构保证足够的刚性及两方向的抗弯性能,其他主梁均为工字钢梁,保证在衬砌施工时混凝土的压力对门架作用时的结构刚性。门架总成为:在两平行下纵梁上装有立柱,在同一下纵梁的共面立柱顶部装有上横梁17,中上部装有中横梁25,斜支撑24连接立柱28与中横梁25,小纵梁22将同一下纵梁23上的立柱连接成一体。 The mast assembly 5 includes uprights 28, lower longitudinal beams 23, oblique supports 24, upper beams 17, middle beams 25, and small longitudinal beams 22. The lower longitudinal beams 23 are box-shaped structures to ensure sufficient rigidity and bending resistance in both directions , the other main beams are I-beams to ensure the structural rigidity when the concrete pressure acts on the portal frame during lining construction. The gantry assembly is as follows: columns are installed on two parallel lower longitudinal beams, upper beams 17 are installed on the top of the coplanar columns of the same lower longitudinal beams, middle beams 25 are installed on the middle and upper parts, diagonal supports 24 connect the columns 28 and middle beams 25, The small longitudinal beam 22 connects the columns on the same lower longitudinal beam 23 into one body.
托架总成3包括正洞模板拱架9、下锚洞/开关洞模板拱架10、模板立柱、模板横梁及上纵梁29,它与拱模板连成整体桁架结构,均为工字形梁结构。正洞模板拱架9分为边模拱架及顶模拱架,边模拱架和顶模拱架为铰接,模板横梁两端与顶模拱架相连成弓形,模板立柱在竖向将顶模拱架与模板横梁连成一体。 Bracket assembly 3 includes front hole formwork arch 9, lower anchor hole/switch hole formwork arch 10, formwork column, formwork beam and upper longitudinal beam 29, which are connected with arch formwork to form an integral truss structure, all of which are I-shaped beams structure. The formwork arch frame 9 of the front hole is divided into a side formwork arch frame and a top formwork arch frame. The side formwork arch frame and the top formwork arch frame are hinged. The mold arch frame is integrated with the template beam.
行走机构8包括四个单轮,分别设置在滑动支柱26之下。行走机构主要由直径300mm的钢轮及轴承组成,需靠外力牵引,可采用装载机等作为牵引,如需要可在下纵梁23处改进安装电机提供动力,齿轮链条传动实现驱动,在钢轨上行走。 The running mechanism 8 includes four single wheels, which are arranged under the sliding pillar 26 respectively. The walking mechanism is mainly composed of steel wheels and bearings with a diameter of 300mm. It needs to be pulled by external force. A loader can be used as traction. If necessary, a motor can be installed at 23 places on the lower longitudinal beam to provide power. The gear chain transmission realizes the drive and walks on the rails. .
起升机构7包括焊于台车两端立柱侧面的支撑座,在支撑座下有滑动立柱,在支撑座与滑动立柱间上设置机械千斤顶,滑动立柱在滑动套里滑动。通过操作机械千斤顶控制台车的升降。 Hoisting mechanism 7 comprises the support base that is welded on the column side at two ends of trolley, slide column is arranged under support base, mechanical jack is set between support base and slide column, and slide column slides in the sliding cover. Control the lifting of the car by operating the mechanical jack.
中线调节机构4,包括机械千斤顶、安装在上纵梁上的滚轮、焊于上横梁上的滑轨,机械千斤顶安装在支撑座上,支撑座焊于上横梁上。操作机械千斤控制模板托架左右移动。 The centerline adjustment mechanism 4 includes a mechanical jack, rollers installed on the upper longitudinal beam, and slide rails welded on the upper beam. The mechanical jack is installed on the support seat, and the support seat is welded on the upper beam. Operate the mechanical jack to control the left and right movement of the template bracket.
拱架加宽机构2包括模板横梁套管、下锚洞/开关洞模板横梁、滚轮,多个滚轮分别安装在模板横梁套管上及上纵梁上。 The arch widening mechanism 2 includes a formwork beam sleeve, a lower anchor hole/switch hole formwork beam, and rollers, and a plurality of rollers are respectively installed on the formwork beam sleeve and the upper longitudinal beam.
机械支撑系统6包括机械螺旋丝杆、机械螺旋丝杆支撑通梁21。 The mechanical support system 6 includes a mechanical screw rod, and the mechanical screw rod supports the beam 21 .
其它辅助结构包括工作平台、楼梯。 Other auxiliary structures include working platforms, stairs.
下锚洞、开关洞独立衬砌台车主要工作原理介绍如下: The main working principle of the independent lining trolley for anchor hole and switch hole is introduced as follows:
1、行走原理 1. Walking principle
下锚洞、开关洞独立衬砌台车只设有4个单轮,无行走驱动机构,主要靠外力牵引在钢轨上行走。 The independent lining trolley for anchor hole and switch hole has only 4 single wheels, no driving mechanism, and mainly relies on external traction to walk on the rail.
2、定位原理 2. Positioning principle
下锚洞、开关洞独立衬砌台车在外力牵引下走到预定位置后,操作起升机构处机械千斤顶使上纵梁带动托架、拱架、模板总成沿隧道横向运动使模板横向移动就位,然后正向操作中线调节处机械千斤顶使台车上升,反向操作机械千斤顶使台车在自身重力条件下下降,到达指定高度。调节机械螺旋丝杆做好支撑固定,防止门架、拱架及模板变形。 After the independent lining trolley for the lower anchor hole and switch hole moves to the predetermined position under the traction of external force, the mechanical jack at the lifting mechanism is operated to make the upper longitudinal beam drive the bracket, arch frame, and formwork assembly to move laterally along the tunnel to make the formwork move laterally. Then operate the mechanical jack at the center line adjustment point forward to make the trolley rise, and operate the mechanical jack in the reverse direction to make the trolley fall under its own gravity and reach the specified height. Adjust the mechanical screw screw to support and fix the door frame, arch frame and formwork to prevent deformation.
3、换侧加宽衬砌原理 3. The principle of side-changing and widening lining
下锚洞、开关洞独立衬砌台车在换侧加宽衬砌时,只需拆除加宽侧各处连接,在外力作用下使该侧下锚洞横梁模板(带动该侧托架、拱架)向外移动,移动到位后用固定销锁定并把连接用螺栓连接,达换侧加宽衬砌的目的。 When the independent lining trolley for the lower anchor hole and the switch hole is changed to widen the lining on the side, it only needs to remove the connections on the widened side, and under the action of external force, the beam formwork of the lower anchor hole on this side (driving the side bracket and arch frame) Move outward, lock with fixed pin after moving in place and connect with bolts to achieve the purpose of changing the side and widening the lining.
台车操作流程如下(参见图5): The trolley operation process is as follows (see Figure 5):
1.台车牵引就位 1. The trolley is pulled in place
衬砌台车在外力牵引下通过4个单轮在钢轨上行驶到指定里程。 Under the traction of external force, the lining trolley travels on the steel rails to a specified mileage through 4 single wheels.
2.下锚洞、开关洞拱架加宽 2. The anchor hole and switch hole arch are widened
根据需要更换下锚洞、开关洞总成。 Replace the lower anchor hole and switch hole assembly as needed.
3.台车定位 3. Trolley positioning
通过调节机械千斤顶使上纵梁带动托架、拱架、模板总成沿隧道横向运动使模板横向就位。然后调节起升机构处的机械千斤顶控制台车升降到位,在外力作用下使需要加宽侧下锚洞横梁模板(带动该侧托架、拱架)向外移动,移动到位后用固定销锁定,调节机械螺旋杆对台车进行加固支撑,防止台车变形。 By adjusting the mechanical jack, the upper longitudinal beam drives the bracket, arch frame and formwork assembly to move laterally along the tunnel to make the formwork in place laterally. Then adjust the mechanical jack at the hoisting mechanism to lift the console car into place. Under the action of external force, the beam formwork of the lower anchor hole on the side that needs to be widened (driving the side bracket and arch frame) moves outward, and locks it with a fixed pin after moving in place. , adjust the mechanical screw rod to reinforce and support the trolley to prevent deformation of the trolley.
4.安装模板总成 4. Install template assembly
模板间用U形卡连接,模板与拱架用螺栓连接,为确保混凝土外观质量,端头模板必须按要求施作。 The templates are connected by U-shaped clips, and the templates and arches are connected by bolts. In order to ensure the appearance quality of the concrete, the end templates must be constructed according to the requirements.
5.拆端头模板脱模 5. Remove the terminal template and demould
旋松螺旋丝杆,取掉销子,取掉螺旋丝杆,拆端头模板脱模。 Unscrew the screw screw, take off the pin, take off the screw screw, and remove the end template for demoulding.
6.台车行走 6. Trolley walking
在外力作用下使需要加宽侧下锚洞横梁模板(带动该侧托架、拱架)向内移动缩回,移动到位后用固定销锁定。然后调节起升机构处的机械千斤顶使台车下降,通过外力牵引至下一处下锚洞(开关洞)。 Under the action of external force, the beam formwork of the lower anchor hole on the side that needs to be widened (driving the side bracket and arch frame) moves inward and retracts, and locks it with a fixed pin after moving in place. Then adjust the mechanical jack at the lifting mechanism to lower the trolley, and pull it to the next anchor hole (switch hole) by external force.
7.转至第2步 7. Go to step 2
至此完成一个工作循环。 At this point, a working cycle is completed.
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