Protecting and self-supporting integrated device for flange plate of steel bridge

Abstract

The utility model discloses a steel bridge flange plate protecting and self-supporting integrated device which comprises an upper connecting point, a lower connecting point, a lower connecting point, an upper connecting point and a lower connecting point. The lower connecting point is arranged on one side of the steel box girder and located under the upper connecting point; the main truss girder comprises an installation beam, a supporting beam and an inclined supporting beam, the installation beam is connected with the upper connecting point and the lower connecting point, the supporting beam is horizontally arranged and supports a formwork above through a batten, the formwork is flush with the flange plate to form an extending face, and the inclined supporting beam is connected with the installation beam and the supporting beam. According to the utility model, the construction difficulty of the bridge cantilever formwork can be reduced, the operation influence surface is very small, the adjustment precision can be accurately and stably controlled, the operation is simple, the control is facilitated, the safety construction of personnel is ensured, the engineering quality can be effectively ensured, and the adaptability, the stability and the practicability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to municipal engineering technical field more specifically, the utility model relates to a kind of steel bridge flange plate protection self-supporting integrated device. BACKGROUND

[0002] With the increasing infrastructure construction of each city, the city is constantly expanding outward, and the urban expressway becomes an important component, thus increasing many bridge projects. Due to the requirements of aesthetics, bridge construction height, traffic under the bridge or river flow and construction season, etc., the current bridge design generally has the characteristics of fewer piers, smaller cross section, larger span and more cantilever parts. Bridge cantilever formwork generally refers to the construction technology of formwork support for the cantilever part of the bridge deck, i.e., the part of the flange plate that exceeds the main beam. During this part of the construction, due to its cantilever characteristics, formwork is difficult to install, and a special support system is needed to ensure the stability of the formwork and construction safety. The cantilever formwork part and method of different types of bridges may vary depending on the bridge structure design. In the construction and maintenance process of steel bridges, the protection of flange plates is crucial. As an important part of the bridge structure, flange plates directly bear the load of vehicles, natural environment and other factors, and the quality of their protection directly affects the overall safety and durability of the bridge.

[0003] The traditional steel bridge flange plate protection support method has many problems. In the past, when performing flange plate protection construction, some relatively simple support structures were commonly used. For example, some constructions used a temporarily erected scaffold support system. In actual operation, this method requires a large amount of manpower and time to erect and dismantle the scaffold. Moreover, the erection process of the scaffold is relatively complex and needs to be strictly operated according to the specifications. Once the erection is not standardized, there will be serious safety hazards, and accidents such as collapse may occur during construction. At the same time, the traditional support structure performs poorly in stability. Due to the special location of the flange plate, the stress environment it is in is complex, as it not only bears its own weight but also bears the vibration and impact force generated during vehicle travel. The traditional simple support structure is difficult to provide sufficient stable support, and in the long-term use process, it is prone to deformation, loosening, etc., which not only affects the protection effect but also may cause the protection facilities to fall off, posing a threat to the safety of traffic and pedestrians under the bridge.

[0004] Combining the actual situation of the construction site, the research group decided to optimize and innovate the existing construction technology. The research direction of bridge cantilever formwork was placed on the innovation of bridge cantilever support system, and detailed technical control was conducted. The problems of low installation efficiency, difficulty in overall adjustment, conflict with the function of the road and river under the bridge, etc. were solved, and the difficulty of bridge cantilever formwork was reduced. SUMMARY

[0005] The utility model provides a kind of steel bridge flange plate protection self-supporting integrated device, it can reduce the construction difficulty of bridge cantilever formwork, and operation influence surface is very small, can be accurately and stably controlled adjustment precision, both simple operation, and it is beneficial to control, personnel safety construction is guaranteed, can effectively guarantee engineering quality, improve adaptability, stability and practicality.

[0006] To achieve these purposes and other advantages according to the utility model, a kind of steel bridge flange plate protection self-supporting integrated device is provided, comprising:

[0007] upper connecting point, which is arranged on one side of the steel box girder;

[0008] lower connecting point, which is arranged on one side of the steel box girder and located directly below the upper connecting point;

[0009] main truss, including mounting beam, support beam, inclined strut beam, the mounting beam is connected with the upper connecting point and lower connecting point, the support beam is horizontally arranged, and the upper formwork is supported by batten, the formwork is flush with the flange plate, forming an extension surface, the inclined strut beam is connected with the mounting beam and support beam.

[0010] Preferably, the upper connecting point is a steel box girder lug plate, the mounting beam is provided with a main truss lug plate, the steel box girder lug plate and the main truss lug plate are connected by a pin shaft, and the lower connecting point is an adjustable support.

[0011] Preferably, the adjustable support comprises a seat plate, a lead screw and a lead screw nut, the seat plate is connected with the steel box girder, the lead screw is horizontally mounted on the seat plate, and the mounting beam is rotatably connected with the lead screw nut.

[0012] Preferably, the edge of the support beam is provided with a protective railing, and the protective railing comprises a vertical rod, an upper horizontal rod, a lower horizontal rod and an inclined support rod.

[0013] Preferably, a footboard is arranged at the lower horizontal rod.

[0014] Preferably, a plurality of reinforcing rods are arranged between the support beam and the inclined strut beam, and the plurality of reinforcing rods form a support structure with the first end adjacent to the second end.

[0015] The utility model at least includes following beneficial effects:

[0016] First, compared with the traditional construction process, the construction cost is saved by 50%-60% under the same engineering quantity, the construction period is saved by 40%, the problems of low installation efficiency of full-support method, function conflict with the road and river under the bridge and the like are overcome in the aspect of overhanging, the problems of overall adjustment difficulty, complex adjustment mode and poor adjustment precision are overcome in the aspect of adjustment, the problems of high price, low application and low universality of wood form and steel form are overcome in the aspect of formwork, the construction difficulty of the bridge cantilever formwork is reduced, the operation influence is small, unlike the traditional construction method, a large amount of materials and site support are needed, and meanwhile, the adjustment precision can be accurately and stably controlled, the operation is simple, control is facilitated, and the engineering quality can be effectively ensured.

[0017] Second, the upper connecting point, the lower connecting point and the main truss are arranged on one side of the steel box girder, the problems of complex construction, poor stability and difficulty in ensuring that the formwork and the flange plate are flush are solved, the structure is reasonable, installation is convenient, the formwork can be stably supported and installation precision is ensured.

[0018] Third, the upper connecting point is arranged as a steel box girder lug plate, and the lower connecting point is arranged as an adjustable support, the angle and position can be easily adjusted according to actual conditions, the adaptability and stability of the device are greatly enhanced, accurate adjustment of the installation beam is realized, and different construction requirements can be met.

[0019] Fourth, the guardrails and the accessory components are arranged, construction safety is effectively ensured, falling risk is reduced, a safe operation environment is created, construction tools and materials and the like are prevented from falling from below the guardrails, and safety threats to traffic and pedestrians under the bridge are avoided.

[0020] Fifth, a plurality of reinforcing rods are arranged between the support beam and the inclined support beam, a stable support structure with the head and tail adjacent to each other is formed, the connection strength and stability between the two are greatly enhanced, the whole device can bear greater load and external force, and the service life of the device is prolonged.

[0021] Other advantages, objects and features of the utility model will be embodied in part through the following description, and will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a side view of one of the technical solutions of the utility model;

[0023] Fig. 2 It is a front view of one of the technical solutions of the utility model. DETAILED DESCRIPTION

[0024] The utility model makes further detailed description in combination with the drawings, so that the person skilled in the art can implement according to the description.

[0025] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0026] It should be noted that the experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "set" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The orientation or positional relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] As shown in Figs. 1-2 The utility model provides a kind of steel bridge flange plate protection self-supporting integrated device, comprising:

[0028] Upper connecting point 1 is arranged on one side of steel box girder 12;

[0029] Lower connecting point 2 is arranged on one side of steel box girder 12, and is located directly below the upper connecting point 1;

[0030] Main truss, it includes mounting beam 3, support beam 4, inclined strut beam 5, the mounting beam 3 connects the upper connecting point 1 with lower connecting point 2, the support beam 4 is horizontally arranged, and is supported by wood square 13 upper formwork 14, the formwork 14 is flush with the flange plate, forms extension surface, the inclined strut beam 5 connects the mounting beam 3, support beam 4.

[0031] In the above technical scheme, by setting the upper connecting point 1, the lower connecting point 2 and the main truss on one side of the steel box girder 12, the problems of complex construction, poor stability and difficulty in ensuring that the formwork 14 is flush with the flange plate of the traditional protective support structure are solved, the structure is reasonable and convenient to install, the complex construction process is not needed, and the formwork 14 installation precision can be stably supported and ensured. The structure of the main truss can stably support the formwork 14, ensure that the formwork 14 is flush with the flange plate, form a good extension surface, provide a reliable foundation for subsequent protective construction, and improve the quality and efficiency of protective construction. It is especially suitable for the formwork of a bridge cantilever with few piers, small cross section, large span and many cantilever parts.

[0032] In actual construction, first, the positions of the upper connecting point 1 and the lower connecting point 2 are determined according to the size of the steel box girder 12 and the position of the flange plate. The upper connecting point 1 and the lower connecting point 2 are respectively installed on one side of the steel box girder 12, and the lower connecting point 2 is located directly below the upper connecting point 1. Then, the mounting beam 3 of the main truss is connected with the upper connecting point 1 and the lower connecting point 2. After the mounting beam 3 is connected, the support beam 4 is installed horizontally, the wood bar 13 is laid on the support beam 4, and then the formwork 14 is placed on the wood bar 13. The position of the formwork 14 is adjusted to make it flush with the flange plate, forming an extension surface. Finally, the inclined support beam 5 is installed, and the two ends of the inclined support beam 5 are respectively connected with the mounting beam 3 and the support beam 4 to ensure the stability of the main truss structure.

[0033] In another technical scheme, the upper connecting point 1 is a steel box girder lug plate, the mounting beam 3 is provided with a main truss lug plate, the steel box girder lug plate and the main truss lug plate are connected through a pin shaft, the lower connecting point 2 is an adjustable support, and the mounting beam 3 is rotationally connected with the adjustable support. Through the specific lug plate pin shaft connection and adjustable support rotation connection, the device is stably connected and can be adjusted according to the actual situation. Optionally, the pin shaft adopts the form of end semicircle and tail protrusion, and a pin shaft chain can also be provided. After the position of the upper connecting point 1 is determined, the steel box girder lug plate is installed at the corresponding position of the steel box girder 12. The main truss lug plate is provided at the corresponding position of the mounting beam 3, and the steel box girder lug plate and the main truss lug plate are connected through the pin shaft to ensure firm connection and flexible rotation of the pin shaft. For the lower connecting point 2, first, the seat plate of the adjustable support is installed on the steel box girder 12, then the lead screw is installed horizontally on the seat plate, and then the mounting beam 3 is rotationally connected with the lead screw nut. By adjusting the position of the lead screw nut on the lead screw, the angle and height of the mounting beam 3 can be adjusted. The steel box girder lug plate and the main truss lug plate are connected through the pin shaft, the connection is stable and has a certain flexibility, and the adjustable support enables the mounting beam 3 to be rotationally connected, which facilitates the angle and position fine adjustment according to the actual situation, and enhances the adaptability and stability.

[0034] In another technical solution, the adjustable support includes a seat plate, a lead screw, and a lead screw nut. The seat plate is connected to the steel box girder 12. The lead screw is horizontally installed on the seat plate. The mounting beam 3 is rotationally connected to the lead screw nut. When installing the adjustable support, first, the seat plate is firmly fixed on the steel box girder 12. A lead screw of appropriate specification is selected and horizontally installed on the seat plate to ensure that the lead screw is firmly installed and can freely rotate. The lead screw nut is installed to cooperate well with the lead screw. The mounting beam 3 is rotationally connected to the lead screw nut. By rotating the lead screw, the position of the lead screw nut can be accurately adjusted, thereby fine-tuning the position of the mounting beam 3 and meeting the installation requirements under different construction conditions. The adjustable support forms an adjustable connection support point, enabling the mounting beam 3, the support beam 4, and the diagonal bracing beam 5 to form a right triangle stable structure, enabling the support beam 4 to extend horizontally and stably. Through the cooperation of the lead screw and the lead screw nut, the position and angle of the mounting beam 3 can be accurately adjusted, solving the problem of difficult flexible adjustment of the lower connection point 2, achieving precise adjustment of the mounting beam 3, meeting the installation requirements under different construction conditions, and improving the practicality and universality.

[0035] In another technical solution, the edge of the support beam 4 is provided with a protective rail, which includes an upper horizontal rod 7, a lower horizontal rod 8, and a diagonal support rod 9. After the installation of the support beam 4 is completed, the protective rail is installed on the edge of the support beam 4. According to the length of the support beam 4 and actual requirements, the length and spacing of the protective rail are determined. The vertical rod 6 is installed first, then the lower horizontal rod 8 and the upper horizontal rod 7 are installed, and finally the diagonal support rod 9 is installed to form a complete protective rail structure. By setting the protective rail and the attached components, the construction safety is effectively guaranteed, the falling risk is reduced, and a safe working environment is created.

[0036] In another technical solution, a foot guard 10 is provided at the lower horizontal rod 8 of the protective rail. After the installation of the lower horizontal rod 8 of the protective rail is completed, a suitable foot guard 10 is selected according to the length and size of the lower horizontal rod 8. The height and material of the foot guard 10 should be selected according to the actual construction environment and requirements. The foot guard 10 prevents construction tools and materials from falling from below the protective rail, avoiding safety threats to traffic and pedestrians under the bridge.

[0037] In another technical solution, a plurality of reinforcing rods 11 are arranged between the support beam 4 and the inclined support beam 5, and the plurality of reinforcing rods 11 form a support structure in end-to-end connection. According to the structure and stress condition of the support beam 4 and the inclined support beam 5, the number and position of the reinforcing rods 11 are determined. The reinforcing rods 11 of appropriate specifications are selected, and the two ends of the reinforcing rods 11 are connected with the support beam 4 and the inclined support beam 5, respectively. The plurality of reinforcing rods 11 are sequentially connected in end-to-end connection, preferably in the staggered form of inclined arrangement, vertical arrangement, inclined arrangement, vertical arrangement, and so on. Here, the end-to-end connection refers to that, in order to facilitate the connection of the reinforcing rods 11 with the support beam 4 or the inclined support beam 5, one connection site is arranged, and then the next connection site is arranged, so as to form a stable support structure and enhance the connection strength and stability between the support beam 4 and the inclined support beam 5. The connection strength and stability between the support beam 4 and the inclined support beam 5 are greatly enhanced, so that the entire device can withstand greater load and external force, and the service life of the device is prolonged.

[0038] The number of devices and the scale of processing described herein are used to simplify the description of the present application. It is obvious to those skilled in the art that the application, modification and change of the present application are obvious.

[0039] Although the embodiments of the present application have been disclosed as above, it is not limited to the application and the embodiments listed in the specification, and it can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. Steel bridge flange plate protection self-supporting integrated device, characterized in that, The utility model relates to a steel box girder formwork support structure, which comprises: an upper connecting point arranged on one side of the steel box girder; a lower connecting point arranged on one side of the steel box girder and directly below the upper connecting point; a main truss comprising a mounting beam, a support beam and an inclined support beam, wherein the mounting beam connects the upper connecting point and the lower connecting point, the support beam is arranged horizontally and supports an upper formwork through a wooden square, the formwork is flush with the flange plate to form an extension surface, and the inclined support beam connects the mounting beam and the support beam.

2. The steel bridge flange protection self-supporting integrated device according to claim 1, characterized in that, The upper connecting point is a steel box girder lug plate, the mounting beam is provided with a main truss lug plate, the steel box girder lug plate and the main truss lug plate are connected through a pin shaft, and the lower connecting point is an adjustable support.

3. The steel bridge flange protection self-supporting integrated device as claimed in claim 2, wherein, The adjustable support comprises a seat plate, a lead screw and a lead screw nut, the seat plate is connected with the steel box girder, the lead screw is horizontally arranged on the seat plate, and the mounting beam is rotationally connected with the lead screw nut.

4. The steel bridge flange protection self-supporting integrated device as claimed in claim 1, wherein, The edge of the support beam is provided with a guardrail, and the guardrail comprises a vertical rod, an upper horizontal rod, a lower horizontal rod and an inclined support rod.

5. The steel bridge flange protection self-supporting integrated device as claimed in claim 4, wherein, A foot guard is arranged at the lower horizontal rod.

6. The steel bridge flange guard self-supporting integrated device as claimed in claim 1, wherein, A plurality of reinforcing rods are arranged between the support beam and the inclined support beam, and the reinforcing rods form a support structure in which the first end is connected with the last end.

Images