Reinforced skeleton arch bridge encased concrete pouring construction system

Abstract

The utility model provides a stiff skeleton arch bridge encased concrete pouring construction system which comprises a suspension walking system and a hanging basket bottom die system, the suspension walking system is arranged on the periphery of a top plate of a stiff skeleton arch bridge, and the hanging basket bottom die system is arranged below a bottom plate of the hanging basket bottom die system. The hanging basket bottom die system is hoisted below the hanging walking system through a hoisting device; the suspension walking system is of a self-walking structure and can walk along the periphery of a top plate of the stiff skeleton arch bridge. The hanging basket bottom die system comprises a bottom die. According to the utility model, the hanging basket bottom die system is hoisted by the suspension walking system to realize crawling along the arch, the construction mode of pouring the bottom die hanging baskets section by section is adopted to carry out pouring construction on the arch ring of the externally wrapped concrete on the stiff skeleton arch bridge, the number of required bottom dies is small, and the material cost is greatly saved; hoisting along with the stiff framework is not needed, the hoisting weight of the stiff framework is reduced, the cable hoisting cost is reduced, and the hoisting safety is also improved; and after the outer wrapped concrete construction is completed, the hanging basket bottom die system returns to the arch springing position to be dismantled, and the safety risk of high-altitude dismantling is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge engineering, in particular to a kind of stiff skeleton arch bridge concrete pouring construction system. BACKGROUND

[0002] With the continuous construction of domestic mountainous area railway and highway, especially in the valley, river and river area, stiff skeleton concrete arch bridge is widely used in China due to its large structural stiffness, good economy and strong spanning capacity. As the main force part of stiff skeleton arch bridge, the pouring process of arch ring concrete is the most complex construction stage.

[0003] For the arch bridge with stiff skeleton outer concrete arch ring, the construction steps are: ① stiff skeleton installation construction, ② stiff skeleton as force support, arch ring outer concrete pouring construction, in order to reduce the load of stiff skeleton, outer concrete is divided into three rings for construction in turn, three rings are bottom plate ring, web ring and top plate ring.

[0004] The biggest difficulty of the above construction steps is the construction of bottom plate ring, because: ① stiff skeleton is a pure steel structure, installation is relatively simple, ② there is no hanging basket platform on the stiff skeleton during the construction of bottom plate ring, personnel and equipment placement is difficult, ③ bottom plate is used as hanging basket platform during the construction of web and top plate, personnel operation is convenient.

[0005] In order to solve the construction problem of bottom plate, the existing construction technology is: the bottom mold of bottom plate is bundled with stiff skeleton segment as a whole, hoisted together with stiff skeleton, the bottom mold is full-paved and put into the whole bridge, and then the bottom mold is removed piece by piece after the arch ring construction is completed.

[0006] The above technology has some shortcomings: ① because the installation and removal of bottom mold in high altitude is very troublesome and has high safety risk, the bottom mold needs to be put into the whole bridge, hoisted together with stiff skeleton, but the full-paved bottom mold in the whole bridge has high cost; ② the bottom mold hoisted together with stiff skeleton increases the hoisting weight of stiff skeleton and improves the hoisting cost; ③ the risk of removing the bottom mold in high altitude after the arch ring construction is completed is high.

[0007] In view of the above problems, the present application provides a new technical scheme. CONTENT OF THE PRESENT INVENTION

[0008] The present application aims to solve at least one of the technical problems existing in the prior art, and therefore proposes a stiff skeleton arch bridge concrete pouring construction system, which adopts the technical scheme comprising:

[0009] The utility model provides a kind of concrete pouring construction system of outer wrapping of rigid skeleton arch bridge, including suspension walking system and hanging basket bottom mould system, and hoisting device;The suspension walking system is arranged at the top plate periphery of rigid skeleton arch bridge, the hanging basket bottom mould system is arranged below the bottom plate of hanging basket bottom mould system, and the suspension walking system hoists the hanging basket bottom mould system below it by hoisting device;The suspension walking system is self-propelled structure and can walk along the top plate periphery of rigid skeleton arch bridge;The hanging basket bottom mould system includes bottom mould.

[0010] According to the utility model embodiment, the suspension walking system includes a self-propelled trolley.

[0011] According to the utility model embodiment, the suspension walking system further includes a suspension rod arranged on the self-propelled trolley.

[0012] According to the utility model embodiment, the hanging basket bottom mould system includes a hanging basket platform, which is fixedly connected below the bottom mould.

[0013] According to the utility model embodiment, a safety pedestrian passage is arranged above the hanging basket platform.

[0014] According to the utility model embodiment, the hanging basket platform is a double-layer truss structure.

[0015] According to the utility model embodiment, the hoisting device is hinged to the suspension walking system and the hanging basket bottom mould system, respectively.

[0016] According to the utility model embodiment, the hoisting device is a sling.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model provides a kind of stiff skeleton arch bridge outer package concrete pouring construction system, including suspension walking system and hanging basket bottom mould system, the suspension walking system is set to the top plate outer periphery of stiff skeleton arch bridge, the hanging basket bottom mould system is set to the bottom plate below hanging basket bottom mould system, the suspension walking system is hoisted in its below by hoisting device with hanging basket bottom mould system;The suspension walking system is self-walking structure and can walk along the top plate outer periphery of stiff skeleton arch bridge;The hanging basket bottom mould system includes bottom mould.The utility model in, hanging basket bottom mould system realizes along arch crawling under the hoisting of suspension walking system, and stiff skeleton arch bridge is carried out outer package concrete arch ring pouring construction using the construction form of bottom mould hanging basket pouring section by section, and the quantity of required bottom mould is less, material cost is greatly saved;Without along with stiff skeleton hoisting, reduce the hoisting weight of stiff skeleton, reduce cable crane cost, also improve hoisting safety;After outer package concrete construction is completed, hanging basket bottom mould system is withdrawn to arch foot and is removed, reduce high-altitude removal safety risk. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0020] Figure 1 It is stiff skeleton arch bridge structure schematic diagram;

[0021] Figure 2 It is stiff skeleton arch bridge arch ring section view;

[0022] Figure 3 It is the stiff skeleton arch bridge outer package concrete arch ring pouring construction step schematic diagram for the utility model embodiment used Figure 1 ;

[0023] Figure 4 It is the stiff skeleton arch bridge outer package concrete arch ring pouring construction step schematic diagram for the utility model embodiment used Figure 2 ;

[0024] Figure 5 It is the stiff skeleton arch bridge outer package concrete arch ring pouring construction step schematic diagram for the utility model embodiment used Figure 3

[0025] Figure 6 It is the stiff skeleton arch bridge outer package concrete arch ring pouring construction step schematic diagram for the utility model embodiment used Figure 4 ;

[0026] Figure 7 It is the installation schematic diagram of suspension walking system, hanging basket bottom mould system in the utility model application embodiment;

[0027] Figure 8The installation section view of the suspension walking system and the hanging basket bottom die system in the embodiment of the utility model is shown.

[0028] Figure 9 The installation section view of the suspension walking system and the hanging basket bottom die system in the embodiment of the utility model is shown.

[0029] Main element symbol explanation:

[0030] 10, stiff skeleton arch bridge; 11, bottom plate; 12, web plate; 13, top plate; 20, suspension walking system; 21, self walking trolley; 22, suspension rod; 30, hanging basket bottom die system; 31, hanging basket platform; 32, bottom die; 33, safety pedestrian passage; 40, sling. Specific implementation

[0031] This part will describe the specific embodiment of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0032] In the description of the utility model, the meaning of multiple is two or more, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If it is described as first, second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0033] In the description of the utility model, it is understood that the position description is involved, for example, the position or location relationship indicated by up, down, front, back, left, right, etc. is based on the position or location relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, so it cannot be understood as a limitation on the utility model.

[0034] In the utility model, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0035] The utility model provides a kind of stiff skeleton arch bridge outer package concrete pouring construction system, such asFigure 7 、 8 , 9, comprising a suspension walking system 20 and a hanging basket formwork system 30, and a hoisting device; the suspension walking system 20 is arranged on the outer periphery of the top plate 13 of the rigid frame arch bridge 10, the hanging basket formwork system 30 is arranged below the bottom plate of the hanging basket formwork system 30, and the suspension walking system 20 hoists the hanging basket formwork system 30 below it through the hoisting device; the suspension walking system 20 is a self-walking structure and can walk along the outer periphery of the top plate 13 of the rigid frame arch bridge 10; the hanging basket formwork system 30 comprises a formwork 32.

[0036] In the utility model, the formwork 32 for pouring is a split formwork, which is in the form of an independent hanging basket and is not hoisted together with the rigid frame arch bridge 10. The suspension walking system 20 is arranged on the outer periphery of the top plate 13 of the rigid frame arch bridge 10 and is suspended on the top surface of the rigid frame arch bridge 10, and can walk along the outer periphery of the top plate 13 of the rigid frame arch bridge 10. The installation and removal of the suspension walking system 20 and the hanging basket formwork system 30 need to be performed at the arch foot position of the rigid frame arch bridge 10.

[0037] Referring to the drawings Figures 1 to 9 The concrete pouring construction system is used for the following concrete pouring process of the rigid frame arch bridge 10:

[0038] When a certain work section of the rigid frame arch bridge 10 is constructed, the self-walking suspension walking system 20 hoists the hanging basket formwork system 30 from the arch foot of the rigid frame arch bridge 10 and climbs to the bottom (i.e. the starting end) of the work section (as shown in Figure 3 The workers start to pour concrete on the bottom plate 11 of the work section on the hanging basket formwork system 30. With the pouring, the hanging basket formwork system 30 climbs from low to high along the rigid frame arch bridge 10, from the starting end to the terminal end of the work section, until the bottom plate 11 of the rigid frame arch bridge 10 is completely poured (as shown in Figure 9 Then, the hanging basket formwork system 30 retreats to the bottom of the work section (as shown in Figure 4 The workers start to pour concrete on the web plate 12 of the work section on the hanging basket formwork system 30. With the pouring, the hanging basket formwork system 30 climbs from low to high along the rigid frame arch bridge 10, from the starting end to the terminal end of the work section, until the web plate 12 of the rigid frame arch bridge 10 is completely poured. Then, the hanging basket formwork system 30 retreats to the bottom of the work section (as shown in Figure 5As shown, workers begin pouring concrete for the top slab 13 of this work section on the hanging basket bottom formwork system 30. As the pouring progresses, the hanging basket bottom formwork system 30 climbs up the rigid frame arch bridge 10 from low to high, from the beginning of the work section to the end of the work section, until the arch ring of the top slab 13 of the rigid frame arch bridge 10 is poured. At this point, the outer concrete work of this work section in the rigid frame arch bridge 10 is completed.

[0039] Furthermore, in the construction process, the rigid frame arch bridge 10 is divided into multiple work sections. Each work section is equipped with a suspended travel system 20 and a hanging basket bottom formwork system 30. Each suspended travel system 20 and hanging basket bottom formwork system 30 is installed and disassembled from the arch foot of the rigid frame arch bridge 10. After installation, it travels to the beginning of the corresponding work section. After the cyclical pouring of the bottom slab 11—web 12—top slab 13, the entire bridge's external concrete encasing work for all work sections of the rigid frame arch bridge 10 is completed (e.g., Figure 6 As shown in the figure, after the construction work is completed, the suspended walking system 20 lifts the hanging basket bottom formwork system 30 back to the arch foot of the rigid frame arch bridge 10 for dismantling.

[0040] In an embodiment, such as Figure 7 As shown, the suspended walking system 20 includes a self-propelled trolley 21 and a suspension rod 22 mounted on the self-propelled trolley 21.

[0041] In an embodiment, such as Figure 7 , 8 As shown in Figure 9, the hanging basket bottom formwork system 30 includes a hanging basket platform 31, which is fixedly connected to the hanging basket platform 31 below the bottom formwork 32. The hanging basket platform 31 is a double-layer truss structure, also known as a high-altitude operation construction platform, which is a work platform set up for construction personnel. A safe pedestrian passage 33 is provided above the hanging basket platform 31.

[0042] In an embodiment, such as Figure 7 , 8 As shown in Figures 9 and 1, the hoisting device is hinged to the suspended travel system 20 and the hanging basket bottom formwork system 30, respectively. Since the rigid frame arch bridge 10 is arched, the hinged connection between the suspended travel system 20 and the hanging basket bottom formwork system 30 allows for greater flexibility during their movement along the arch, preventing abrupt obstruction and ensuring that both the suspended travel system 20 and the hanging basket bottom formwork system 30 remain parallel to the rigid frame arch bridge 10. Specifically, the hoisting device is a sling 40, with one end hinged to the suspension rod 22 and the other end hinged to the hanging basket platform 31.

[0043] The existing technology is that the concrete operation of the stiff frame arch bridge 10 is full-paved and full-bridge investment mode for the bottom die 32, the bottom die 32 is hoisted together with the stiff frame, the bottom die 32 needs to be removed in the air after the arch ring construction is completed; there is no self-walking mechanism and no suspension system; the outside hanging basket platform 31 of the top plate 13 utilizes the bottom die hanging basket platform 31, the height difference between the top plate 13 and the bottom die 32 is large, and the operation is inconvenient. In the utility model, the suspension walking system 20 is a self-walking system, the hanging basket bottom die system 30 realizes crawling along the arch under the hoisting of the suspension walking system 20, adopts the construction form of pouring in sections by the bottom die hanging basket, the required number of bottom dies 32 is small, only 6 section of bottom dies 32 needs to be put in the embodiment, the material cost is greatly saved; after the stiff frame arch bridge 10 is installed, the suspension walking system 20 and the hanging basket bottom die system 30 are installed on the stiff frame arch bridge 10, do not need to be hoisted together with the stiff frame, the hoisting weight of the stiff frame is reduced, the cable crane cost is reduced, and the hoisting safety is improved; after the concrete construction is completed, the hanging basket bottom die system 30 is withdrawn to the arch foot for removal, the safety risk of high-altitude removal is reduced.

[0044] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications and replacements are all included in the range defined by the claims of the present application.

Claims

1. A construction system for pouring concrete on a reinforced skeleton arch bridge, characterized in that, The invention relates to a construction method for a rigid frame arch bridge (10), which comprises a suspension walking system (20), a hanging basket formwork system (30) and a hoisting device; the suspension walking system (20) is arranged on the outer periphery of the top plate (13) of the rigid frame arch bridge (10), the hanging basket formwork system (30) is arranged below the bottom plate (11) of the hanging basket formwork system (30), and the suspension walking system (20) hoists the hanging basket formwork system (30) below it through the hoisting device. The suspension walking system (20) is a self-walking structure and can walk along the outer periphery of the top plate (13) of the rigid frame arch bridge (10); the hanging basket formwork system (30) comprises a formwork (32).

2. The system according to claim 1, wherein, The suspension walking system (20) comprises a self-walking trolley (21).

3. The system according to claim 2, characterized in that, The suspension walking system (20) further comprises a suspension rod (22) arranged on the self-walking trolley (21).

4. The system according to claim 1, characterized in that, The hanging basket formwork system (30) comprises a hanging basket platform (31) fixedly connected below the formwork (32).

5. The system according to claim 4, characterized in that, A safe pedestrian passage (33) is arranged above the hanging basket platform (31).

6. The system according to claim 4, characterized in that, The hanging basket platform (31) is a double-layer truss structure.

7. The system according to claim 1, characterized in that, The hoisting device is hingedly connected with the suspension walking system (20) and the hanging basket formwork system (30) respectively.

8. The system according to claim 7, characterized in that, The hoisting device is a sling (40).

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