Pier-side bracket for movable formwork

Abstract

The invention discloses a pier-side bracket for a movable formwork. The pier-side bracket comprises cross beams, straining beams, stand columns and inter-column tying pieces. The two cross beams are oppositely arranged on the two sides of the pier column and horizontally extend in the construction advancing direction roughly perpendicular to the bridge. The cross beam comprises at least two sub-cross beams, and every two adjacent sub-cross beams are connected through bolts in the axial direction. A plurality of straining beams are connected between the two cross beams; two ends of the straining beam are in bolted connection with the crossbeams. The at least two beams and the two cross beams jointly enclose the pier column so as to form a pier embracing limiting structure. The vertical column is vertically supported on the top surface of the pier bearing platform, and the top end is in bolted connection with the bottom of the cross beam; the at least two stand columns are arranged at intervals in the length direction of the cross beam. The stand column comprises a plurality of standard column sections which are in butt joint in the axial direction. And two adjacent standard column sections are connected along the vertical bolts. Every two adjacent stand columns are laterally connected through an inter-column tying piece. The pier-side bracket has the advantages of high efficiency, safety, lossless installation, high engineering adaptability, stable supporting and the like, and the construction benefit of the movable formwork is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction equipment, in particular to a pier-side bracket for mobile formwork. BACKGROUND

[0002] With the extension of highways in China to complex terrains such as mountainous areas and across rivers, the proportion of bridges has increased dramatically, and the construction environment has become increasingly severe. Such projects generally face challenges such as large differences in pier height, an increase in special pier types, and tight time pressure. At the same time, there are increasing requirements for structural durability (especially in marine environments), environmental protection, and economy, and there is an urgent need for pier-side brackets to have high adaptability, non-destructive installation, and efficient and safe construction capabilities.

[0003] The current mainstream technology mainly uses scaffold-type support frames set up on site and bracket brackets partially embedded in the pier body. Although widely used, the existing mainstream brackets have the following defects and cannot meet the needs of the development of bridge construction: (1) poor support height adjustment and low engineering applicability. Fixed structures cannot adapt to dramatic changes in pier height and need to be customized or cut and modified on site, which is time-consuming, material-consuming, and costly. In particular, special pier types cannot be effectively supported, which restricts the feasibility of construction. (2) Pier body structure is damaged by invasive installation. Pre-embedded brackets need to be drilled and welded, forming a structural weak point that accelerates the corrosion of steel reinforcement in a corrosive environment, threatening durability. This approach is increasingly restricted in modern bridge specifications due to the destruction of structural integrity and aesthetics. (3) Low construction efficiency and high safety risks. Relies on long-term high-altitude erection or welding; high accident rate for scattered parts assembly (accounting for 35% of bridge accidents); and high dependence on large hoisting equipment, further increasing risks and costs. (4) In addition, on-site construction is greatly affected by uncertain factors, making precision control difficult, standardization low, and bracket quality fluctuating; structural turnover is difficult, and material loss is large, undoubtedly increasing cost investment; and a large amount of cutting and welding also causes environmental pollution.

[0004] Therefore, there is an urgent need to develop a new type of bracket system to effectively solve the problems of poor adaptability, structural damage, low construction efficiency, and quality risks, and to meet the needs of efficient, safe, and green construction of complex bridges. SUMMARY

[0005] The main technical problem to be solved by the present application is to provide a pier-side bracket for mobile formwork, which has a structure that can bring higher construction efficiency.

[0006] To solve the above technical problems, the present application provides a pier-side bracket for mobile formwork, comprising a cross beam, a tie beam, a stand column and a column interconnecting member.

[0007] Two of the cross beams are oppositely arranged on two sides of the pier column and extend horizontally in a direction substantially perpendicular to the construction advancing direction of the bridge; a plurality of the tie beams are connected between the two cross beams; the two ends of the tie beam are bolted to the cross beams; at least two of the tie beams and two of the cross beams jointly enclose the pier column to form a pier-holding limiting structure;

[0008] The vertical column is vertically supported on the top surface of the pier cap; the top end of the vertical column is bolted to the bottom of the cross beam; at least two of the vertical columns are arranged along the length direction of each cross beam; the vertical column comprises a plurality of standard column segments which are axially connected; two adjacent standard column segments are bolted along the vertical direction;

[0009] Two adjacent vertical columns are laterally connected by the inter-column tie members.

[0010] In a preferred embodiment, the cross beam comprises at least two sub-cross beams; two adjacent sub-cross beams are bolted along the axial direction.

[0011] In a preferred embodiment, two adjacent standard column segments each extend out a flange plate at the joint; the upper and lower flange plates are bolted.

[0012] In a preferred embodiment, the standard column segments are configured with different heights, and the height is configured in the range of 0.1m to 5m.

[0013] In a preferred embodiment, the tie beam comprises a center tie beam and a peripheral tie beam; at least two of the center tie beams enclose the pier column; compared with the center tie beam, the peripheral tie beam is arranged at a position closer to the end of the cross beam.

[0014] In a preferred embodiment, at least two of the peripheral tie beams are respectively arranged at the ends of two cross beams.

[0015] In a preferred embodiment, at least four vertical columns are respectively supported at the four corner portions of the cap.

[0016] In a preferred embodiment, the cross beam is a steel box beam.

[0017] In a preferred embodiment, a plurality of inter-column tie members are arranged along the height direction.

[0018] In a preferred embodiment, the inter-column tie member is a precision rolled threaded steel.

[0019] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0020] The pier-side bracket is directly supported on the bearing platform, and the opening of the pier column does not need to be pre-buried with a connecting support, which not only saves a large amount of high-altitude operation on site, simplifies the installation process, improves construction safety, but also avoids structural damage to the pier column and reduces the risk of seawater corrosion of the pier column.

[0021] The standard column segments are increased or decreased to precisely adjust the support height, which not only improves the adaptability to uneven terrain, but also improves the recyclability and versatility between different projects, further reducing material loss and cost investment.

[0022] The pier-side bracket is a modular structure, and the modules are connected by bolts, which facilitates hoisting, assembly and disassembly, reduces construction difficulty and improves construction efficiency.

[0023] The pier-side bracket is connected by a plurality of tie beams and inter-column tie members, has high structural integrity and rigidity, stable stress, and high supporting capacity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a perspective view of the pier-side bracket in the embodiment of the present application;

[0025] Fig. 2 is a top view of the tie beam in the embodiment of the present application;

[0026] Fig. 3 is a front view of the pier-side bracket in the embodiment of the present application.

[0027] In the figure, 1 is a cross beam, 11 is a sub-cross beam, 12 is a flange bolt, 2 is a tie beam, 21 is a central tie beam, 22 is a peripheral tie beam, 23 is a pier-holding limiting structure, 3 is a column, 31 is a standard column segment, 311 is a flange plate, 4 is an inter-column tie member, 5 is a pier column, and 6 is a bearing platform. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be wall-mounted connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements, and for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As shown in Figs. 1-3 , the embodiment of the present application provides a pier-side bracket for a mobile formwork, which comprises a cross beam 1, a tie beam 2, a plurality of columns 3 and a column interconnecting member 4.

[0032] As shown in Fig. 1 , Fig. 2As shown, two beams 1 are oppositely arranged on both sides of the pier 5 and extend horizontally in a direction substantially perpendicular to the construction advancing direction of the bridge. In this embodiment, the beams 1 are steel box beams. The beams 1 are of a multi-section structure, i.e. each beam 1 includes at least two sub-beams 11. Adjacent two sub-beams 11 are connected by a first bolt assembly in the axial direction. It is understood that the axial direction is horizontal. The first bolt assembly is preferably a flange bolt 12 in the horizontal direction. The tie beams 2 are arranged between the two beams 1 to form a laterally stable transverse force system. In this embodiment, the tie beams 2 include central tie beams 21, and at least two central tie beams 21 are oppositely arranged on both sides of the pier 5 in a direction perpendicular to the beams 1. The two ends of the central tie beams 21 are connected to the sides of the beams 1 by a second bolt assembly. Preferably, the beams 1 and the at least two central tie beams 21 are arranged at a distance of 1.0 meters from the outer periphery of the pier 5 to form a hug pier limiting structure 23 by enclosing the pier 5. The hug pier limiting structure 23 is limited in the horizontal direction by the pier 5. Specifically, the pier 5 not only limits the shift of the hug pier limiting structure 23 in the length and width directions, but also limits the deflection of the hug pier limiting structure 23 in the horizontal plane due to its rectangular or rounded rectangular cross-section, thereby improving the structural stability of the beams 1. The tie beams 2 also include a plurality of peripheral tie beams 22. Compared with the central tie beams 21, the peripheral tie beams 22 are arranged closer to the ends of the beams 1 and laterally connect the two beams 1, further improving the planar rigidity of the entire transverse force system. The peripheral tie beams 22 are connected to the beams 1 by a second bolt assembly. Preferably, in this embodiment, the at least two peripheral tie beams 22 are respectively arranged across the ends of the two beams 1; the peripheral tie beams 22 are perpendicular to the beams 1 or are connected to the beams 1 in an "X" shaped cross structure. The specific structural form of the central tie beams 21 and the peripheral tie beams 22 is a truss beam, and in another similar embodiment, it can be an I-beam, a small box beam, etc.

[0033] As Fig. 1 , Fig. 3As shown, the column 3 is vertically supported on the top surface of the pier cap 6, and the top thereof is connected to the bottom of the beam 1 by a third bolt assembly. For each beam 1, at least two columns 3 are arranged at intervals along the length direction of the beam 1. Preferably, at least four columns 3 are respectively supported on the four corner portions of the cap 6 to stably support the two upper beams 1. To improve the stability of the support, the bottom of the column 3 is provided with a reinforcing structure: the bottom end of the column 3 extends outwardly by a ring of flange plates to increase the supporting surface; or, a plurality of angle steels are attached to the four bottom edges of the column 3 and are fixed to the cap 6 by expansion bolts to horizontally position the column 3; or further, a pre-embedded plate is arranged at the designed position on the top of the cap 6, and the bottom of the column 3 is bolted to the pre-embedded plate. The two adjacent columns 3 are laterally connected by a column-to-column tie 4 to provide the integrity of the longitudinal force system. In the embodiment, the column-to-column tie 4 is preferably a finished threaded steel. The finished threaded steel extends horizontally and is provided with a row every 3 meters in the height direction.

[0034] The column 3 adopts a multi-section structure and includes a plurality of axially butted standard column sections 31. The two adjacent standard column sections 31 are connected in the vertical direction by a fourth bolt assembly. Preferably, the connection manner is that the two adjacent standard column sections 31 each horizontally extend outwardly by a ring of flange plates at the joint, and the upper and lower flange plates are arranged with a plurality of screw holes in alignment to be vertically fastened by the fourth bolt assembly. In the embodiment, the height configuration of the standard column sections 31 of one column 3 is as follows: including one 5-meter section, one 3-meter section, two 1-meter sections, one 0.5-meter section, two 0.2-meter sections, and two 0.1-meter sections. With the above-mentioned fine size configuration, the column 3 can realize the accurate adjustment of the supporting height by increasing or decreasing a specific one or more standard column sections 31, which not only improves the adaptability to uneven terrain in a single project, but also meets the different requirements of supporting height in different projects, thereby having better turnover and versatility.

[0035] Compared with the traditional pier-side bracket, the pier-side bracket has the following advantages: (1) directly supported on the bearing platform 6, without opening and pre-burying the connecting support in the pier column 5, which not only saves a large amount of high-altitude operation on site, simplifies the installation process, improves the construction safety, but also avoids the structural damage to the pier column 5 and reduces the seawater corrosion risk of the pier column 5; (2) the column 3 realizes the precise adjustment of the supporting height by increasing or decreasing the standard column segment 31, which not only improves the adaptability to uneven terrain, but also improves the recyclability and versatility between different projects, further reduces the material loss and cost investment; (3) the whole is a modular structure, and the modules are connected by bolts, which is convenient for lifting, assembling and disassembling, reduces the construction difficulty, and improves the construction efficiency; (4) the pier-side bracket is connected by a plurality of beams 2 and column-interconnecting members 4, has high structural integrity and rigidity, stable stress, and high supporting capacity.

[0036] The above description is only the preferred specific embodiment of the present application, not the limitation of the patent range of the present application, and any equivalent transformation of the technical content in the specification of the present application belongs to the protection range of the present application.

Claims

1. A pier-side bracket for a mobile formwork, characterized by: Including beams, tie beams, columns and column anchors; The two cross beams are arranged on both sides of the pier column and extend horizontally in a direction substantially perpendicular to the construction advancement direction of the bridge; a plurality of tie beams are connected between the two cross beams; both ends of the tie beams are bolted to the cross beams; at least two tie beams and the two cross beams jointly enclose the pier column to form a pier-holding and limiting structure; The columns are vertically supported on the top surface of the pier cap; the top of the columns is bolted to the bottom of the beam; at least two columns are spaced apart along the length of each beam; the columns include a plurality of axially connected standard column segments; two adjacent standard column segments are connected by vertical bolts; Two adjacent columns are laterally connected via the inter-column tie members.

2. A pier-side bracket for a movable formwork according to claim 1, characterized in that: The crossbeam includes at least two sub-crossbeams; two adjacent sub-crossbeams are connected by bolts along the axial direction.

3. The pier-side bracket for a movable formwork according to claim 1, characterized in that: A circle of flange plates is extended outwards at the intersection of two adjacent standard column sections, and the upper and lower layers of the flange plates are connected by bolts.

4. The pier-side bracket for a movable formwork according to claim 1, characterized in that: The standard column sections are configured with different heights, and the heights are configured within a range of 0.1 meters to 5 meters.

5. The pier-side bracket for a movable formwork according to claim 1, characterized in that: The tie beams include a central tie beam and a peripheral tie beam; at least two central tie beams enclose the pier column; compared with the central tie beams, the peripheral tie beams are arranged at a position closer to the end of the beam.

6. The pier-side bracket for a movable formwork according to claim 5, characterized in that: At least two of the peripheral tie beams are respectively arranged across the ends of the two cross beams.

7. The pier-side bracket for a movable formwork according to claim 1, characterized in that: At least four of the columns are respectively supported on the four corners of the base.

8. The pier-side bracket for a movable formwork according to claim 1, characterized in that: The cross beam is a steel box beam.

9. The pier-side bracket for a movable formwork according to claim 1, characterized in that: A plurality of the inter-column anchors are arranged at intervals along the height direction.

10. The pier-side bracket for a movable formwork according to claim 1, characterized in that: The inter-column anchors are made of precision-rolled threaded steel bars.

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