A construction method for pouring concrete on a rigid skeleton arch bridge using a hanging basket

Abstract

The present invention provides a construction method for pouring concrete on a hanging basket for a rigid skeleton arch bridge. A suspension and walking system and a hanging basket bottom formwork system are installed at the arch foot position of the rigid skeleton arch bridge. The suspension and walking system is a self-propelled system that can walk along the rigid skeleton arch bridge. The hanging basket bottom formwork system is suspended below the suspension and walking system. The bottom formwork for pouring concrete on the outside adopts a separated bottom formwork in the form of an independent hanging basket and is not bundled with the rigid skeleton arch bridge for hoisting. The suspension and walking system is suspended on the top surface of the rigid skeleton arch bridge. The hanging basket bottom formwork system is installed on the rigid skeleton arch bridge. The supporting suspension and walking system can crawl along the arch, and the external concrete pouring construction of the entire bridge adopts the construction method of pouring the bottom formwork hanging basket in sections. The number of bottom formworks required is small, which greatly saves material costs. After the installation of the rigid frame arch bridge is completed, the hanging basket bottom formwork system is installed separately to reduce the hoisting weight of the rigid frame, reduce the cable crane cost, and improve the hoisting safety. After the external concrete construction is completed, the dismantling of the suspension and walking system and the hanging basket bottom formwork system is also returned to the arch foot position of the rigid frame arch bridge to reduce the safety risk of high-altitude demolition.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to a method for pouring concrete using a hanging basket for a rigid skeleton arch bridge. Background Art

[0002] With the continuous construction of railways and highways in mountainous areas across my country, particularly across canyons, mountains, and rivers, rigid-frame concrete arch bridges are becoming increasingly popular due to their high structural rigidity, economic efficiency, and strong spanning capacity. As the primary load-bearing component of a rigid-frame arch bridge, the pouring of the arch ring concrete is the most complex construction phase.

[0003] For arch bridges that use a rigid frame wrapped with concrete arch rings, the construction steps are: ① Installation of the rigid frame, ② Using the rigid frame as a load-bearing support, pouring the concrete wrapped around the arch ring. To reduce the load on the rigid frame, the concrete wrapped around the arch ring is divided into three rings and constructed in sequence. The three rings are the bottom plate ring, the web ring, and the top plate ring.

[0004] The biggest difficulty in the above construction steps is the construction of the bottom plate ring. The reasons are: ① The rigid frame is a pure steel structure and is relatively simple to install. ② When constructing the bottom plate ring, there is no hanging basket platform on the rigid frame, which makes it difficult to place personnel and equipment. ③ When constructing the web and top plates, the bottom plate serves as a hanging basket platform, which makes it convenient for personnel to operate.

[0005] In order to solve the problem of base plate construction, the existing construction technology is: the bottom formwork of the base plate is bundled with the rigid frame segment as a whole, hoisted together with the rigid frame, and the bottom formwork is fully laid on the entire bridge. After the arch ring construction is completed, the bottom formwork is removed piece by piece through the dismantling platform.

[0006] The above technology has some disadvantages: ① Because the installation and dismantling of the bottom formwork at high altitude is very troublesome and the safety risk is very high, the bottom formwork needs to be invested in the entire bridge and hoisted together with the rigid frame, but the investment of the entire bridge is high; ② The bottom formwork is hoisted together with the rigid frame, which increases the hoisting weight of the rigid frame and increases the hoisting cost; ③ After the arch ring construction is completed, there is a high risk of dismantling the bottom formwork at high altitude.

[0007] In view of the above problems, the present invention provides a construction method with high safety and good economy. Summary of the Invention

[0008] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a construction method for pouring concrete on a rigid skeleton arch bridge using a hanging basket. The technical solution adopted includes:

[0009] A method for pouring concrete using a hanging basket for a rigid skeleton arch bridge comprises the following steps:

[0010] S1. Installing a suspension and traveling system and a hanging basket bottom formwork system at the arch foot of the rigid skeleton arch bridge. The suspension and traveling system can travel along the rigid skeleton arch bridge, and the hanging basket bottom formwork system is suspended below the suspension and traveling system and is located below the bottom plate of the rigid skeleton arch bridge.

[0011] S2, the suspension and travel system hoisting basket bottom formwork system moves to the working section on the rigid skeleton arch bridge;

[0012] S3. The hanging and traveling system hoisting basket bottom formwork system travels from the beginning to the end of the working section, and concrete is poured during the travel process until the bottom plate arch ring pouring construction of the rigid skeleton arch bridge is completed;

[0013] S4. The suspension and travel system hoisting basket bottom formwork system returns to the beginning of the working section, and then travels from the beginning to the end of the working section, and pours concrete during the travel process until the web arch ring pouring construction of the rigid skeleton arch bridge is completed;

[0014] S5. The suspension and travel system hoisting basket bottom formwork system returns to the beginning of the working section, and then travels from the beginning to the end of the working section, and pours concrete during the travel process until the top plate arch ring pouring construction of the rigid skeleton arch bridge is completed;

[0015] S6. The hanging basket bottom formwork system of the suspension and traveling system is hoisted back to the arch foot position of the rigid skeleton arch bridge. The hanging basket bottom formwork system is first dismantled, and then the suspension and traveling system is dismantled.

[0016] According to an embodiment of the present invention, a method for pouring concrete using a hanging basket for a rigid skeleton arch bridge is provided, in which the rigid skeleton arch bridge is divided into a plurality of working sections, and a suspension and walking system and a hanging basket bottom formwork system are allocated to each working section. After being installed at the arch foot position of the rigid skeleton arch bridge, each suspension and walking system and hanging basket bottom formwork system moves to a corresponding position, and each suspension and walking system and hanging basket bottom formwork system returns to the arch foot position of the rigid skeleton arch bridge for dismantling.

[0017] According to a method for pouring concrete using a hanging basket for a rigid skeleton arch bridge according to an embodiment of the present invention, the suspension and travel system is hinged to the hanging basket bottom formwork system.

[0018] According to an embodiment of the present invention, a method for pouring concrete using a hanging basket for a rigid skeleton arch bridge is provided, wherein a sling is connected between the suspension and travel system and the hanging basket bottom formwork system, and the two ends of the sling are respectively hinged to the hanging basket suspension and travel system and the hanging basket bottom formwork system.

[0019] According to a method for pouring concrete using a hanging basket for a rigid skeleton arch bridge according to an embodiment of the present invention, the suspension and travel system includes an arch climbing travel trolley.

[0020] According to an embodiment of the present invention, a construction method for pouring concrete using a hanging basket for a rigid skeleton arch bridge is provided, wherein the hanging basket bottom formwork system includes a hanging basket platform and a bottom formwork.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides a construction method for pouring concrete out of a rigid skeleton arch bridge using a hanging basket. The bottom formwork used for pouring the outsourced concrete adopts a separated bottom formwork in the form of an independent hanging basket and is not bundled with the rigid skeleton arch bridge for hoisting. The suspension and walking system is suspended on the top surface of the rigid skeleton arch bridge. The suspension and walking system is a self-propelled system and can walk along the rigid skeleton arch bridge. The hanging basket bottom formwork system relies on the suspension and walking system to crawl along the arch. The outsourced concrete pouring construction of the entire bridge adopts a construction form of pouring the bottom formwork hanging basket in sections. The required number of bottom formworks is small, which greatly saves material costs. After the rigid skeleton arch bridge is installed, the hanging basket bottom formwork system is installed separately to reduce the hoisting weight of the rigid skeleton, reduce the cable hoisting cost, and improve the hoisting safety. After the outsourced concrete construction is completed, the suspension and walking system and the hanging basket bottom formwork system are also dismantled back to the arch foot position of the rigid skeleton arch bridge to reduce the safety risk of high-altitude dismantling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of a rigid skeleton arch bridge structure;

[0025] Figure 2 This is the cross-section of the arch ring of a rigid skeleton arch bridge;

[0026] Figure 3 Schematic diagram of the concrete pouring construction method for the rigid skeleton arch bridge in the embodiment of the present invention Figure 1 ;

[0027] Figure 4 Schematic diagram of the concrete pouring construction method for the rigid skeleton arch bridge in the embodiment of the present invention Figure 1 ;;

[0028] Figure 5 Schematic diagram of the concrete hanging basket pouring construction method for the rigid skeleton arch bridge in the embodiment of the present invention Figure 1 ;;

[0029] Figure 6 Schematic diagram of the concrete hanging basket pouring construction method for the rigid skeleton arch bridge in the embodiment of the present invention Figure 1 ;

[0030] Figure 7This is a schematic diagram of the installation of the suspension and walking system and the hanging basket bottom mold system in the embodiment of the present invention;

[0031] Figure 8 This is a cross-sectional view of the installation of the suspension and travel system and the hanging basket bottom mold system in the embodiment of the present invention;

[0032] Figure 9 This is a cross-sectional view of the suspension and walking system and the hanging basket bottom formwork system in the bottom plate casting state in the embodiment of the present invention.

[0033] Description of main component symbols:

[0034] 10. Rigid skeleton arch bridge; 11. Bottom plate; 12. Web plate; 13. Top plate; 20. Suspension and travel system; 21. Arch climbing trolley; 30. Hanging basket bottom formwork system; 31. Hanging basket platform; 32. Bottom formwork; 40. Suspension straps. DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0036] In the description of this invention, "above," "below," and "within" are understood to be exclusive of the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the present invention, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection; and internal communication between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in the present invention based on the specific content of the technical solution.

[0039] Example

[0040] The present invention provides a method for pouring concrete using a hanging basket on a rigid skeleton arch bridge. Figures 3 to 9 As shown, the following steps are included:

[0041] S1. Installing a suspension and traveling system 20 and a hanging basket bottom formwork system 30 at the arch foot of the rigid skeleton arch bridge 10. The suspension and traveling system 20 includes an arch climbing traveling trolley 21, and the hanging basket bottom formwork system 30 includes a hanging basket platform 31 and a bottom formwork 32. The suspension and traveling system 20 can travel along the rigid skeleton arch bridge 10, and the hanging basket bottom formwork system 30 is suspended below the suspension and traveling system 20 and is located below the bottom plate 11 of the rigid skeleton arch bridge 10.

[0042] S2, the suspension and travel system 20 hoists the hanging basket bottom formwork system 30 and travels to the working section on the rigid skeleton arch bridge 10;

[0043] S3, the suspension and travel system 20 hoisting basket bottom formwork system 30 travels from the beginning to the end of the working section, and pours concrete during the travel process until the arch ring pouring construction of the bottom plate 11 of the rigid skeleton arch bridge 10 is completed;

[0044] S4, the suspension and travel system 20 hoists the hanging basket bottom formwork system 30 back to the beginning of the working section, and then travels from the beginning to the end of the working section, and pours concrete during the travel process until the web 12 arch ring pouring construction of the rigid skeleton arch bridge 10 is completed;

[0045] S5, the suspension and travel system 20 hoists the hanging basket bottom formwork system 30 back to the beginning of the working section, and then travels from the beginning to the end of the working section, and pours concrete during the travel process until the arch ring pouring construction of the top plate 13 of the rigid skeleton arch bridge 10 is completed;

[0046] S6. The hanging basket bottom formwork system 30 hoisted by the suspension and traveling system 20 is returned to the arch foot position of the rigid skeleton arch bridge 10. The hanging basket bottom formwork system 30 is first dismantled, and then the suspension and traveling system 20 is dismantled.

[0047] The casting bottom formwork 32 of the present invention adopts a separate bottom formwork in the form of an independent hanging basket, which is not tied to the rigid skeleton arch bridge 10 for hoisting. The suspension and walking system 20 is suspended on the top surface of the rigid skeleton arch bridge 10 and can walk along the rigid skeleton arch bridge 10. The installation and removal of the suspension and walking system 20 and the hanging basket bottom formwork system 30 are also carried out at the arch foot position of the rigid skeleton arch bridge 10. When constructing a certain working section of the rigid skeleton arch bridge 10, first climb to the bottom (i.e., the starting end) of the working section (such as Figure 3As shown in FIG5 , workers begin pouring concrete on the bottom plate 11 of this working section on the hanging basket bottom formwork system 30. As the pouring progresses, the hanging basket bottom formwork system 30 climbs from low to high along the rigid skeleton arch bridge 10, from the beginning of the working section to the end of the working section, until the arch ring pouring construction of the bottom plate 11 of the rigid skeleton arch bridge 10 is completed (as shown in FIG5 ). Figure 9 Then, the bottom mold system 30 of the hanging basket is retracted to the bottom of the working section (as shown in FIG. Figure 4 As shown in FIG5 , workers begin pouring concrete for the web 12 of this working section on the hanging basket bottom formwork system 30. As the pouring progresses, the hanging basket bottom formwork system 30 climbs from low to high along the rigid skeleton arch bridge 10, from the beginning of the working section to the end of the working section, until the arch ring pouring construction of the web 12 of the rigid skeleton arch bridge 10 is completed; then, the hanging basket bottom formwork system 30 retreats to the bottom of the working section (as shown in FIG5 ). Figure 5 As shown in the figure, workers begin to pour concrete for the top plate 13 of this working section on the hanging basket bottom formwork system 30. As the pouring progresses, the hanging basket bottom formwork system 30 climbs from low to high along the rigid skeleton arch bridge 10, from the beginning of the working section to the end of the working section, until the arch ring pouring construction of the top plate 13 of the rigid skeleton arch bridge 10 is completed. At this point, the outsourcing concrete work of this working section in the rigid skeleton arch bridge 10 is completed.

[0048] In addition, in the present invention, the rigid skeleton arch bridge 10 is divided into a plurality of working sections, and each working section is allocated with a suspension and walking system 20 and a hanging basket bottom formwork system 30. Each suspension and walking system 20 and a hanging basket bottom formwork system 30 are installed from the arch foot position of the rigid skeleton arch bridge 10 and then walked to the beginning of the corresponding working section. After the bottom plate 11 - web plate 12 - top plate 13 are poured in a cycle, the full bridge outsourcing concrete construction work of the entire working section of the rigid skeleton arch bridge 10 is completed (such as Figure 6 As shown), then, each suspension and walking system 20 and the hanging basket bottom formwork system 30 are returned to the arch foot position of the rigid skeleton arch bridge 10 for removal.

[0049] In some other embodiments of the present invention, Figure 7 、 8 As shown in Figures 9 and 9, the suspension and travel system 20 is hingedly connected to the basket base formwork system 30. Because the rigid skeleton arch bridge 10 is arched, the hinged connection between the suspension and travel system 20 and the basket base formwork system 30 allows for greater flexibility and avoids stiffness and stagnation during the process of crawling along the arch. Specifically, a sling 40 is connected between the suspension and travel system 20 and the basket base formwork system 30. The ends of the sling 40 are hingedly connected to the basket suspension and travel system 20 and the basket base formwork system 30, respectively.

[0050] In the prior art, the concrete outsourcing operation of the rigid skeleton arch bridge 10 is a full-bottom-formwork-and-bridge-investment method. The bottom formwork is hoisted together with the rigid skeleton. After the arch ring construction is completed, the bottom formwork needs to be dismantled at high altitude. There is no self-propelled mechanism and no suspension system. The outer side hanging basket platform of the top plate 13 utilizes the bottom formwork hanging basket platform. The height difference between the top plate 13 and the bottom formwork is large, which makes the operation inconvenient. The present invention provides a construction method for pouring concrete using a hanging basket for an externally wrapped rigid skeleton arch bridge. The suspension and walking system 20 is a self-propelled system. The hanging basket bottom formwork system 30 relies on the suspension and walking system 20 to crawl along the arch. The construction method of pouring the bottom formwork hanging basket in sections is adopted. A small number of bottom formworks 32 are required. In the embodiment, only 6 sections of the bottom formwork 32 are required, which greatly saves material costs. After the rigid skeleton arch bridge 10 is installed, the hanging basket bottom formwork system 30 is installed separately, which reduces the hoisting weight of the rigid skeleton, reduces the cable hoisting cost, and improves the hoisting safety. After the externally wrapped concrete construction is completed, the hanging basket bottom formwork system 30 is returned to the arch foot for dismantling, which reduces the safety risk of high-altitude dismantling.

[0051] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A method for pouring concrete using a hanging basket for a rigid skeleton arch bridge, characterized in that: The following steps are included: S1, installing a suspension and walking system (20) and a hanging basket bottom formwork system (30) at the arch foot position of the rigid skeleton arch bridge (10), wherein the suspension and walking system (20) can walk along the rigid skeleton arch bridge (10), and the hanging basket bottom formwork system (30) is suspended below the suspension and walking system (20) and is located below the bottom plate (11) of the rigid skeleton arch bridge (10); S2, the suspension and travel system (20) hoists the hanging basket bottom formwork system (30) and travels to the working section on the rigid skeleton arch bridge (10); S3, the hanging and traveling system (20) hoisting the hanging basket bottom formwork system (30) travels from the beginning to the end of the operation section, and concrete is poured during the walking process until the arch ring pouring construction of the bottom plate (11) of the rigid skeleton arch bridge (10) is completed; S4, the suspension and walking system (20) hoists the hanging basket bottom formwork system (30) back to the beginning of the working section, and then walks from the beginning to the end of the working section, and pours concrete during the walking process until the web (12) and arch ring pouring construction of the rigid skeleton arch bridge (10) are completed; S5, the suspension and walking system (20) hoists the hanging basket bottom formwork system (30) back to the beginning of the working section, and then walks from the beginning to the end of the working section, and pours concrete during the walking process until the arch ring pouring construction of the top plate (13) of the rigid skeleton arch bridge (10) is completed; S6, the suspension and travel system (20) hoists the hanging basket bottom formwork system (30) back to the arch foot position of the rigid skeleton arch bridge (10), first removes the hanging basket bottom formwork system (30), and then removes the suspension and travel system (20); The rigid skeleton arch bridge (10) is divided into a plurality of operation sections, and a suspension and travel system (20) and a hanging basket bottom formwork system (30) are allocated to each operation section. Each suspension and travel system (20) and the hanging basket bottom formwork system (30) are installed from the arch foot position of the rigid skeleton arch bridge (10) and then travel to the corresponding position. Each suspension and travel system (20) and the hanging basket bottom formwork system (30) are returned to the arch foot position of the rigid skeleton arch bridge (10) for removal.

2. The method for pouring concrete using a hanging basket for a rigid skeleton arch bridge according to claim 1 is characterized in that: The suspension and travel system (20) is hinged to the hanging basket bottom mold system (30).

3. The method for pouring concrete using a hanging basket for a rigid skeleton arch bridge according to claim 2 is characterized in that: A sling (40) is connected between the suspension and travel system (20) and the hanging basket bottom mold system (30), and two ends of the sling (40) are respectively hinged to the hanging basket suspension and travel system (20) and the hanging basket bottom mold system (30).

4. The method for pouring concrete using a hanging basket for a rigid skeleton arch bridge according to claim 1 is characterized in that: The suspension and travel system (20) includes a climbing arch travel trolley (21).

5. The method for pouring concrete using a hanging basket for a rigid skeleton arch bridge according to claim 1 is characterized in that: The hanging basket bottom mold system (30) comprises a hanging basket platform (31) and a bottom mold (32).

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