Bridge support pre-pressing structure

Abstract

The utility model discloses a bridge support pre-pressing structure which comprises a full framing, a pre-pressing assembly and a supporting assembly, the pre-pressing assembly is connected with the supporting assembly, and the pre-pressing assembly is erected above the full framing through the supporting assembly so as to pre-press the full framing. And the moving assembly is connected with the supporting assembly, and the moving assembly can drive the supporting assembly to move. The moving assembly is connected to the supporting assembly, so that the supporting assembly can move, and then the pre-pressing assembly is driven to move. After the pre-pressing assembly completes the full framing pre-pressing work of the current span, the whole pre-pressing assembly can be rapidly moved to the next span to continue the pre-pressing work through the moving assembly, disassembly and reassembly are not needed, and the pre-pressing construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a bridge support pre-compression structure. Background Art

[0002] In the engineering practice of bridge construction, the construction of box girders is a crucial link. In order to ensure the construction quality and safety of box girders, according to industry specifications and design requirements, strict pre-stressing tests must be carried out after the bottom formwork and side formwork of bridge box girders are installed. This step is not only a direct test of the bearing capacity of the foundation, the safety of the support and formwork, but also an accurate measurement of the actual deformation. Through pre-stressing, the inelastic deformation in the formwork and support system can be effectively eliminated, thereby ensuring that the box girder can remain linear and straight after pouring concrete, meeting the design requirements and structural safety.

[0003] During the preloading process, one of the key goals is to discover possible problems and hidden dangers in the support structure and formwork system in advance through practical operations. By timely discovering and rectifying these problems, it can be ensured that the safety of the support and formwork meets the project requirements, thereby avoiding unforeseen risks in subsequent construction.

[0004] However, traditional preloading methods, such as sandbag preloading, water bag preloading and prefabricated block preloading, all have certain limitations. Taking sandbag preloading as an example, the filling of sandbags requires manual cooperation with small machinery, which is not only inefficient but also labor-intensive. Secondly, when there are a large number of sandbags, a large amount of construction site will be occupied, and the hoisting time will be long, which will increase the construction period and cost. In addition, if it rains during the loading process, the sandbags will absorb more water if they are not protected in time, which will affect the accuracy of preloading. At the same time, if an alarm is triggered during the loading process and unloading is required, the unloading process will become very cumbersome and time-consuming due to the large number of sandbags. Since the loading weight of different spans may be different, when the sandbags need to be transferred to other spans for loading, they need to be weighed again, which increases the complexity and uncertainty of the work. Finally, after the sandbag preloading is completed, a large amount of sand will be left on site. If it is not handled in time, it will occupy the construction site and affect the subsequent construction progress.

[0005] Although water bag preloading has solved some problems in sand bag preloading to a certain extent, it also has its own unique limitations. Due to the low density of water, in order to achieve the specified weight, it is necessary to pile up higher water bags, which increases the danger of construction. At the same time, water will gather in the lower part due to gravity, resulting in uneven loading area and affecting the accuracy of preloading. In addition, when transferring the loading, the water in the water bag needs to be drained and then refilled, which not only wastes water resources, but also increases the complexity and cost of construction.

[0006] Although the prefabricated block pre-pressing has certain stability and accuracy, when the number of prefabricated blocks is large in actual application, the cost will increase accordingly. Secondly, the transfer speed of prefabricated blocks is slow and the unloading time is long, which will also increase the construction period and cost.

[0007] In summary, although the traditional preloading method can meet the needs of bridge box girder construction to a certain extent, there are still many problems and limitations in actual operation. Utility Model Content

[0008] The utility model provides a bridge support preloading structure to solve the problems of long transfer period and low construction efficiency of traditional preloading devices.

[0009] A bridge support prestressing structure provided in the present application includes: a full-frame, a prestressing assembly and a support assembly, wherein the prestressing assembly is connected to the support assembly, and the prestressing assembly is erected above the full-frame through the support assembly to prestress the full-frame; a moving assembly, wherein the moving assembly is connected to the support assembly, and the moving assembly can drive the support assembly to move.

[0010] According to the above technical means, the utility model connects a moving component to the support component so that the support component can move, thereby driving the preloading component to move. When the preloading component completes the preloading work of the full frame of the current span, the moving component can be quickly moved as a whole to the next span to continue the preloading work without disassembly and reassembly, thereby improving the efficiency of preloading construction.

[0011] Furthermore, the support assembly includes a frame beam and at least two columns, each of the columns is evenly distributed on two sides of the full-frame that are relatively arranged along a first direction, and each of the columns is respectively connected to the frame beam to erect the frame beam above the full-frame along the first direction.

[0012] According to the above technical means, the first direction in the utility model is the extension direction of the cross section of the full-frame. Both ends of the frame beam are supported on the ground by columns, and the frame beam spans the full-frame. During on-site construction, the frame beam needs to be spliced ​​on-site according to the cross-sectional size of the full-frame, which helps to accurately pre-compress the full-frame.

[0013] Furthermore, there are two movable components, which are respectively arranged on two sides of the full-frame that are relatively arranged along the first direction, and the movable component on one side is connected to each of the columns located on this side.

[0014] According to the above technical means, a group of moving components are respectively arranged at both ends of the frame beam to help the movement stability.

[0015] Further, each of the moving components includes a guide member and at least two sliding members, the guide member is adapted to each of the sliding members; the guide members are distributed along the second direction, so that the sliding members can slide on the guide members along the second direction; each of the sliding members is connected to each of the columns located on the side;

[0016] The first direction and the second direction are perpendicular to each other.

[0017] According to the above technical means, the second direction in the utility model is the extension direction of the bridge body. The column can follow the sliding member to slide on the guide member along the second direction, thereby realizing the movement of the preloading assembly, so that the preloading assembly can quickly move along the first direction to the next span to continue the preloading work without disassembly and reassembly, thereby improving the preloading construction efficiency.

[0018] Furthermore, the moving assembly also includes a braking device, and the braking device is connected to the sliding member.

[0019] According to the above technical means, the braking device is used to control the sliding member to be fixed at a predetermined position to prevent the support component from sliding during the pre-stressing construction process and affecting the pre-stressing effect.

[0020] Furthermore, the support assembly also includes a counterweight block, and the counterweight block is installed on the frame beam.

[0021] According to the above technical means, the counterweight block is used to prevent the frame beam from being pushed back during the pre-stressing process and causing accidents such as the frame beam tipping over, which helps to improve the overall stability of the support assembly.

[0022] Furthermore, the prestressing assembly includes a jack, which is connected to the frame beam and is installed above the full frame through the frame beam; the output end of the jack can abut against the top of the full frame to prestress the full frame.

[0023] According to the above technical means, the jack can accurately apply and adjust the required preloading force. Compared with the traditional preloading method, the use of the jack for preloading can be more environmentally friendly and energy-saving. At the same time, it avoids the problem of the traditional preloading method requiring repeated installation and disassembly of the preloading block, thereby improving the preloading efficiency.

[0024] Furthermore, the number of the jacks is not less than two, and the jacks are evenly distributed on the frame beam along the second direction.

[0025] According to the above technical means, since the full frame of the bridge box girder is divided into multiple areas along the first direction, the preload weight of each area is different, and thus the utility model arranges multiple jacks, and each jack controls the weight loaded by the jack in each area through a motor to achieve precise preload.

[0026] Furthermore, the pre-stressing assembly also includes a lifting assembly, the number of which is no less than two, each of which is evenly distributed on the frame beam along the second direction, and each of the jacks is installed on the frame beam through each of the lifting assemblies.

[0027] According to the above technical means, the lifting assembly can drive each of the jacks to move to the preferred height for pre-compression.

[0028] Furthermore, the pre-stressing assembly also includes a lifting assembly and a connecting piece, the lifting assembly is installed on the frame beam, and one end of the lifting assembly is connected to the connecting piece; the plurality of jacks are connected to the lifting assembly via the connecting piece.

[0029] According to the above technical means, the utility model installs multiple jacks on a lifting assembly through the same connecting piece, which helps to improve the preloading efficiency and reduce the cost.

[0030] Beneficial effects achieved by the utility model:

[0031] The utility model connects a moving component to the support component so that the support component can move, thereby driving the preloading component to move. When the preloading component completes the preloading work of the full frame of the current span, the moving component can be quickly moved to the next span as a whole to continue the preloading work without disassembly and reassembly, thereby improving the efficiency of preloading construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 It is a structural schematic diagram of the pre-pressing component, the supporting component and the moving component of the utility model;

[0034] Figure 3 for Figure 2 A schematic diagram of the enlarged local structure of part A;

[0035] Figure 4 It is a side view of the overall structure of the utility model;

[0036] Figure 5 for Figure 4 A schematic diagram of the enlarged local structure of part B;

[0037] Figure 6 It is a schematic diagram of the structure of the pre-pressing component of the utility model.

[0038] Reference numerals:

[0039] 1- Full rack;

[0040] 2-preloading assembly, 21-jack, 22-lifting assembly, 23-connecting piece;

[0041] 3-support assembly, 31-frame beam, 32-column, 33-counterweight, 34-beam support;

[0042] 4-moving assembly, 41-guiding member, 42-sliding member, 43-braking device;

[0043] 5-Wood formwork;

[0044] 6-wooden square;

[0045] 7-I-beam.

[0046] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0049] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0050] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0051] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0052] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0053] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0054] like Figure 1 and Figure 2 As shown, a bridge support prestressing structure includes: a full frame 1, a prestressing component 2 and a support component 3, the prestressing component 2 is connected to the support component 3, the prestressing component 2 is erected above the full frame 1 through the support component 3 to prestress the full frame 1; a moving component 4, the moving component 4 is connected to the support component 3, and the moving component 4 can drive the support component 3 to move.

[0055] In this embodiment, the support assembly 3 is connected with the moving assembly 4 so that the support assembly 3 can move, thereby driving the preloading assembly 2 to move. When the preloading assembly 2 completes the preloading work of the full frame 1 of the current span, the moving assembly 4 can be quickly moved as a whole to the next span to continue the preloading work without disassembly and reassembly, thereby improving the preloading construction efficiency.

[0056] When the full frame 1 of the cast-in-place box girder is erected, the support assembly 3 is assembled on site according to the cross-sectional dimensions of the box girder on site, and the moving assembly 4 is installed on the support assembly 3 to drive the support assembly 3 to move; the preloading assembly 2 is installed on the support assembly 3 according to the length of each span preloading and other conditions to achieve precise control of the preloading weight. During the preloading work, the preloading assembly 2 exerts a downward force on the full frame 1, and the pressure data is observed at any time during the preloading process. Once the observed data is abnormal, the construction personnel can quickly control the preloading assembly 2 to unload the force. After the preloading is completed, the preloading assembly 2 unloads the force and moves to the next span preloading area through the moving assembly 4 to continue the preloading work.

[0057] like Figure 5As shown, in this embodiment, the top of the full-frame 1 is provided with wooden formwork 5, wooden beam 6 and I-beam 7 in sequence from top to bottom. The wooden formwork 5 is the direct contact surface in bridge construction, and is used to bear casting materials such as concrete; the wooden beam 6 is the supporting and bottoming material in bridge construction, and is used to support the wooden formwork to ensure the stability and flatness of the formwork; the I-beam 7 is used to support the wooden beam and the wooden formwork, bear various loads during the construction process, and transfer them to the full-frame 1.

[0058] like Figure 2 and Figure 4 As shown, the support assembly 3 includes a frame beam 31 and at least two columns 32, each column 32 is evenly distributed on two sides of the full frame 1 that are relatively arranged along a first direction, and each column 32 is respectively connected to the frame beam 31 to erect the frame beam 31 above the full frame 1 along the first direction.

[0059] In this embodiment, the first direction is the extension direction of the cross section of the full frame 1. Both ends of the frame beam 31 are supported on the ground by columns 32, and the frame beam 31 spans the full frame 1. During on-site construction, the frame beam 31 needs to be spliced ​​on-site according to the cross-sectional size of the full frame 1, which helps to accurately preload the full frame 1.

[0060] like Figure 2 and Figure 4 As shown, there are two moving assemblies 4, which are respectively arranged on two sides of the full frame 1 opposite to each other along the first direction, wherein the moving assembly 4 on one side is connected to each column 32 located on the side. A set of moving assemblies 4 is respectively arranged at both ends of the frame beam 31 to facilitate movement stability.

[0061] It should be noted that in this embodiment, the moving components 4 on both sides of the frame beam 31 need to ensure that they move simultaneously to ensure that the frame beam 31 remains balanced during the movement, avoiding tilting or instability caused by unilateral movement, thereby ensuring the overall stability of the support component 3.

[0062] like Figure 3 As shown, each moving component 4 includes a guide member 41 and at least two sliding members 42, and the guide member 41 is adapted to each sliding member 42; the guide members 41 are distributed along the second direction, so that the sliding members 42 can slide on the guide members 41 along the second direction; each sliding member 42 is connected to each column 32 located on the side; the first direction and the second direction are perpendicular to each other.

[0063] In this embodiment, the second direction is the extension direction of the bridge body. The column 32 can follow the sliding member 42 to slide on the guide member 41 along the second direction, thereby realizing the movement of the preloading assembly 2, so that the preloading assembly 2 can quickly move along the first direction to the next span to continue the preloading work without disassembly and reassembly, thereby improving the efficiency of preloading construction.

[0064] In this embodiment, the guide member 41 is a guide rail, and the sliding member 42 is a pulley, which can slide on the guide rail. A plurality of receiving grooves are formed on the guide rail along the length direction of the guide rail, and a plurality of pulleys are connected to the bottom end of the column 32, and each pulley can slide in each receiving groove to improve the sliding stability of the support assembly.

[0065] like Figure 3 As shown, the moving assembly 4 further includes a brake device 43, which is connected to the sliding member 42. The brake device 43 is used to control the sliding member 42 to be fixed at a predetermined position to prevent the support assembly 3 from sliding during the preloading construction process and affecting the preloading effect.

[0066] In this embodiment, the braking device 43 can be a locking screw or other types of locking members, which can act directly on the sliding member 42 and fix it in a predetermined position by tightening or locking. The braking device 43 can also use a friction brake to prevent the sliding member 42 from sliding by increasing the friction between the sliding member 42 and the supporting structure. In more complex construction environments, hydraulic or pneumatic principles can also be used to achieve braking. For example, the fixing force on the sliding member 42 is applied or released by controlling the piston of a hydraulic cylinder or a pneumatic cylinder. In particular, in some cases, a safety lock or other types of safety devices can also be used to ensure that the sliding member 42 can remain fixed in extreme cases (such as power outages, control system failures, etc.).

[0067] like Figure 2 and Figure 4 As shown, the support assembly 3 further includes a counterweight 33, which is mounted on the frame beam 31. The counterweight 33 is used to prevent the frame beam 31 from being reversed during the pre-stressing process, causing accidents such as the frame beam 31 tipping over, and helps to improve the overall stability of the support assembly 3.

[0068] Preferably, in this embodiment, guy ropes may be arranged around the frame beam 31 for fixing, thereby further enhancing the stability of the frame beam 31 .

[0069] In this embodiment, the support assembly 3 further includes a beam support 34 , which is supported at the connection between the frame beam 31 and the column 32 to improve the connection stability between the frame beam 31 and the column 32 .

[0070] like Figure 5 and Figure 6 As shown, the pre-stressing assembly 2 includes a jack 21, which is connected to a frame beam 31, and the jack 21 is erected above the full frame 1 through the frame beam 31; the output end of the jack 21 can abut against the top of the full frame 1 to pre-stress the full frame 1.

[0071] The jack 21 can accurately apply and adjust the required preloading force. Compared with the traditional preloading method, the use of the jack for preloading can be more environmentally friendly and energy-saving. At the same time, the problem of the traditional preloading method requiring repeated installation and disassembly of the preloading block is avoided, thereby improving the preloading efficiency.

[0072] like Figure 1 , Figure 2 and Figure 4 As shown, the number of the jacks 21 is not less than two, and the jacks 21 are evenly distributed on the frame beam 31 along the second direction.

[0073] Since the bridge box girder full frame 1 is divided into multiple areas along the first direction, the preload weight of each area is different, and thus multiple jacks 21 are arranged in this embodiment, and each jack 21 controls the weight loaded by the jack in each area through a motor to achieve precise preload.

[0074] like Figure 5 and Figure 6 As shown, the pre-pressing assembly 2 further includes a lifting assembly 22, the number of which is not less than two, each lifting assembly 22 is evenly distributed on the frame beam 31 along the second direction, and each jack 21 is installed on the frame beam 31 through each lifting assembly 22. The lifting assembly 22 can drive each jack 21 to move to a preferred height for pre-pressing.

[0075] In this embodiment, the number of the lifting components 22 is the same as the number of the jacks 21 , and each lifting component 22 can drive each jack 21 to perform lifting motion to achieve precise pre-compression.

[0076] like Figure 5 and Figure 6 As shown, the pre-pressing assembly 2 also includes a lifting assembly 22 and a connecting member 23 . The lifting assembly 22 is installed on the frame beam 31 , and one end of the lifting assembly 22 is connected to the connecting member 23 . A plurality of jacks 21 are connected to the lifting assembly 22 via the connecting member 23 .

[0077] In this embodiment, multiple jacks 21 are installed on a lifting assembly 22 through the same connecting member 23, which helps to improve pre-pressing efficiency and reduce costs.

[0078] In this embodiment, the number of lifting components 22 can be flexibly set according to multiple areas of the bridge box girder full frame 1 along the first direction, and the number of jacks 21 is set according to the prestressing weight required by each area, so that the prestressing work of the full frame 1 can be carried out simultaneously and efficiently.

[0079] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A bridge support pre-compression structure, characterized in that: include: A full frame (1), a pre-pressing component (2) and a supporting component (3), wherein the pre-pressing component (2) is connected to the supporting component (3), and the pre-pressing component (2) is mounted above the full frame (1) through the supporting component (3) to pre-press the full frame (1); A moving component (4), wherein the moving component (4) is connected to the supporting component (3), and the moving component (4) can drive the supporting component (3) to move.

2. A bridge support pre-compression structure according to claim 1, characterized in that: The support assembly (3) comprises a frame beam (31) and at least two columns (32), each of the columns (32) being evenly distributed on two sides of the full-frame (1) that are arranged opposite to each other along a first direction, and each of the columns (32) is respectively connected to the frame beam (31) so as to erect the frame beam (31) above the full-frame (1) along the first direction.

3. A bridge support pre-compression structure according to claim 2, characterized in that: There are two movable assemblies (4), which are respectively arranged on two sides of the full-frame (1) that are arranged opposite to each other along a first direction, wherein the movable assembly (4) on one side is connected to each of the uprights (32) located on that side.

4. A bridge support pre-compression structure according to claim 3, characterized in that: Each of the moving components (4) comprises a guide member (41) and at least two sliding members (42), wherein the guide member (41) is adapted to each of the sliding members (42); the guide members (41) are distributed along the second direction, so that the sliding members (42) can slide on the guide members (41) along the second direction; each of the sliding members (42) is connected to each of the upright posts (32) located on the side; The first direction and the second direction are perpendicular to each other.

5. A bridge support pre-compression structure according to claim 4, characterized in that: The moving assembly (4) further comprises a braking device (43), wherein the braking device (43) is connected to the sliding member (42).

6. A bridge support pre-compression structure according to claim 2, characterized in that: The support assembly (3) further comprises a counterweight block (33), wherein the counterweight block (33) is mounted on the frame beam (31).

7. A bridge support pre-compression structure according to claim 4, characterized in that: The preloading assembly (2) comprises a jack (21), the jack (21) being connected to the frame beam (31), and the jack (21) being mounted above the full frame (1) via the frame beam (31); the output end of the jack (21) can abut against the top of the full frame (1) to preload the full frame (1).

8. A bridge support pre-compression structure according to claim 7, characterized in that: The number of the jacks (21) is no less than two, and the jacks (21) are evenly distributed on the frame beam (31) along the second direction.

9. A bridge support pre-compression structure according to claim 8, characterized in that: The pre-pressing assembly (2) further comprises a lifting assembly (22), the number of the lifting assemblies (22) being no less than two, the lifting assemblies (22) being evenly distributed on the frame beam (31) along the second direction, and the jacks (21) being mounted on the frame beam (31) via the lifting assemblies (22).

10. A bridge support pre-compression structure according to claim 8, characterized in that: The pre-pressing assembly (2) further comprises a lifting assembly (22) and a connecting piece (23); the lifting assembly (22) is mounted on the frame beam (31), and one end of the lifting assembly (22) is connected to the connecting piece (23); and a plurality of jacks (21) are connected to the lifting assembly (22) via the connecting piece (23).

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