A device for installing small radius curved steel-concrete beams

Abstract

The utility model proposes a device for installing a steel-concrete beam with a small radius curve, and relates to the technical field of steel-concrete beam construction. A first bracket and a second bracket are set up to set up a translation base surface on the existing cap beam with different horizontal heights and the cap beam to be installed, so as to ensure that the bearing support can move on a straight horizontal plane when bearing the steel-concrete beam, thereby improving the installation accuracy of the steel-concrete beam, and the setting adjustment component controls the lateral movement or longitudinal movement of the bearing support, and the installation angle and translation direction of the steel-concrete beam can be adjusted according to the actual situation, thereby improving the installation accuracy of the steel-concrete beam; the above structure has strong adaptability to the on-site terrain; high safety and stability; can meet the construction of steel-concrete beams for small radius curve bridges; can meet the construction of steel-concrete beams for curve bridges with large longitudinal slopes and large transverse slopes; the bracket erection and dismantling are simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steel-concrete beam construction, in particular to a device for installing a small-radius curved steel-concrete beam. Background Art

[0002] There are three main methods for the construction and installation of steel box girders: cantilever assembly, bracket installation and jacking installation. Among them, the jacking method of steel box girders refers to the construction method of using professional jacking equipment to push the steel box girder from the assembly position to the installation position through temporary piers or longitudinal tracks. This method is suitable for continuous bridges with large spans and equal cross-sections, especially for projects with complex environments under bridges such as valleys, rivers, and cross-line traffic requirements. The existing steel box girder cumulative sliding jacking construction can be roughly divided into two types of construction methods, namely, overall cumulative sliding construction and segmented cumulative sliding construction. Overall cumulative jacking construction refers to the use of sliding devices to push the steel box girder to the predetermined position after the overall welding is completed on the assembly bracket; segmented cumulative sliding construction refers to the steel box girder being affected by the site or other construction factors. First, some segments are welded on the assembly bracket and then pushed. After reaching the predetermined position, the next segment of the steel box girder is hoisted for welding, and then jacking construction is carried out. This cycle is repeated until the steel box girder reaches the predetermined position. Regardless of which of the above-mentioned pushing methods is used, the process is to first weld the sliding shoe to the bottom of the steel box girder, and then use the pushing equipment to apply horizontal force to the sliding shoe to drive the steel box girder to move horizontally. After the steel box girder is pushed to the specified position, the jack is arranged and the sliding shoe is removed, and finally the beam is dropped to the permanent pier.

[0003] The above-mentioned jacking method has limitations when applied to complex mountainous terrain. When the construction environment has unfavorable conditions such as a small radius or a large longitudinal slope or a large transverse slope, it is difficult to adjust the angle of the steel-concrete beam of the curved bridge. As a result, the difficulties in the construction of the steel-concrete beam of the curved bridge are difficult to solve. In addition, the existing jacking method often cannot push the steel box beam to the appropriate position, which prolongs the construction time and the installation accuracy cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a device for installing a small-radius curved steel-concrete beam, which can solve the problems raised by the above-mentioned background technology in view of the deficiencies of the prior art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The utility model provides a device for installing a small-radius curved steel-concrete beam, comprising a first bracket installed on an existing cap beam, a second bracket installed on a cap beam to be installed, and a bearing support, wherein the top of the first bracket is flush with the top of the second bracket to form a translation base surface, the bearing support is installed on the translation base surface, and an adjustment component for controlling the lateral or longitudinal movement of the bearing support is provided between the bearing support and the translation base surface.

[0007] In some technical solutions of the present invention, the second bracket includes a plurality of support members arranged in an array, and one end of the support member is fixedly connected to the top of the cap beam to be installed.

[0008] In some technical solutions of the utility model, a stabilizing structure is provided between any two adjacent support members.

[0009] In some technical solutions of the present invention, the first bracket and the second bracket have the same structure.

[0010] In some technical solutions of the present invention, the adjustment component includes a plurality of longitudinal guide beams installed on the top of the first bracket or the second bracket, a transverse fixed beam is installed on the top of the plurality of longitudinal guide beams, and the bearing support is slidably arranged on the top of the transverse fixed beam.

[0011] In some technical solutions of the utility model, the bearing support includes a plurality of bearing platforms arranged in sequence along the extension direction of the transverse fixed beam, any two adjacent bearing platforms are detachably connected by a connecting piece, and the bearing platforms are each provided with a plurality of sliding components slidably connected to the transverse fixed beam.

[0012] In some technical schemes of the present invention, the sliding assembly includes a positioning plate connected to the supporting platform, a skateboard support is provided on the side wall of the positioning plate opposite to the transverse fixed beam, a skateboard in contact with the transverse fixed beam is provided on the skateboard support, guide frames are provided on both sides of the supporting platform, and a guide block is provided on the side of the guide frame in contact with the transverse fixed beam.

[0013] In some technical solutions of the present utility model, a lifting mechanism is provided between the bearing platform and the transverse fixed beam.

[0014] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0015] A translation base surface is constructed by arranging a first bracket and a second bracket on the existing cap beam with different horizontal heights and the cap beam to be installed, so as to ensure that the bearing support can move on a straight horizontal plane when bearing the steel-concrete beam, thereby improving the installation accuracy of the steel-concrete beam, and the arranged adjustment component controls the lateral movement or longitudinal movement of the bearing support, and the installation angle and translation direction of the steel-concrete beam can be adjusted according to actual conditions, thereby improving the installation accuracy of the steel-concrete beam; the above structure has strong adaptability to on-site terrain; high safety and stability; can meet the construction of steel-concrete beams for small-radius curved bridges; can meet the construction of steel-concrete beams for curved bridges with large longitudinal slopes and large transverse slopes; the erection and dismantling of the brackets are simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the construction structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 It is a side view assembly schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the sliding component in the utility model;

[0021] Figure 5 It is a schematic diagram of the unfolded structure of the sliding assembly in the utility model;

[0022] Figure 6 It is a schematic diagram of the combined structure of the carrying platform in the utility model.

[0023] Icons: 1. Existing cap beam; 2. Cap beam to be installed; 3. Support member; 4. Stabilizing structure; 5. Longitudinal guide beam; 6. Transverse fixed beam; 7. Steel box beam; 8. Load-bearing platform; 9. Lifting mechanism; 10. Guide frame; 11. Rib plate; 12. Positioning plate; 13. Skateboard support; 14. Skateboard; 16. Connecting parts. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] Please refer to Figure 1-Figure 6 shown.

[0028] The utility model provides a device for installing a small radius curved steel-concrete beam, such as Figure 1 , Figure 2 As shown, the utility model provides a device for installing a small-radius curved steel-concrete beam, comprising a first bracket installed on an existing cap beam, a second bracket installed on a cap beam 2 to be installed, and a bearing support, wherein the top of the first bracket is flush with the top of the second bracket to form a translation base surface, the bearing support is installed on the translation base surface, and an adjustment component for controlling the lateral or longitudinal movement of the bearing support is provided between the bearing support and the translation base surface. In order to solve the problem that the angle adjustment of the steel-concrete beam for curved bridge construction is difficult under unfavorable conditions such as small radius or large longitudinal slope or large transverse slope in complex environments such as mountainous areas, the existing jacking method often cannot push the steel box beam 7 to a suitable position, which prolongs the construction time and the installation accuracy cannot be guaranteed; in order to solve the above problems, the present technical solution sets up a translation base surface on the existing cap beam with different horizontal heights and the cap beam 2 to be installed by setting a first bracket and a second bracket to ensure that the bearing support can move on a straight horizontal plane when bearing the steel-concrete beam, thereby improving the installation accuracy of the steel-concrete beam, and the adjustment component set controls the lateral or longitudinal movement of the bearing support, and can adjust the installation angle and translation direction of the steel-concrete beam according to actual conditions, thereby improving the installation accuracy of the steel-concrete beam; the above structure has strong adaptability to the on-site terrain; high safety and stability; can meet the construction of steel-concrete beams for curved bridges with small radius; can meet the construction of steel-concrete beams for curved bridges with large longitudinal slopes and large transverse slopes; the bracket erection and dismantling are simple and convenient.

[0029] Preferably, the specific structure of the first bracket provided in the technical solution is: a box beam assembly frame consisting of steel pipe columns with a size of 530*12mm is set on the existing cap beam, and supports are provided at both ends of the steel pipe columns to facilitate later installation, and slurry is poured into the supports. The first bracket is provided with at least 4 steel pipe columns in the width direction of the cap beam.

[0030] In some technical solutions of the present invention, the second bracket includes a plurality of support members 3 arranged in an array, one end of which is fixedly connected to the top of the cap beam 2 to be installed. The support member 3 is also a box beam assembly frame composed of a plurality of steel pipe columns with a size of 530*12mm spliced ​​together; it is used to make up for the height difference between the existing cap beam and the cap beam 2 to be installed, and improve the stability of the steel-concrete beam during translation.

[0031] In some technical solutions of the utility model, a stabilizing structure 4 is provided between any two adjacent support members 3. The provided stabilizing structure 4 includes a channel steel connector 16, and a large number of channel steel connectors 16 are fixed between any two adjacent support members 3 by bolt connection to stabilize the structural strength of the second bracket composed of steel pipe columns, thereby ensuring the stability of the bracket system during operation.

[0032] In some technical solutions of the utility model, the structures of the first bracket and the second bracket are the same in the erection method. The first bracket or the second bracket can be formed by different numbers of steel pipe columns according to actual conditions. The difficulty of obtaining materials can reduce the time for material preparation and it is also convenient for later construction personnel to install the above structure.

[0033] In some technical solutions of the present invention, the adjustment component includes a plurality of longitudinal guide beams 5 installed on the top of the first bracket or the second bracket, a transverse fixed beam 6 is installed on the top of the plurality of longitudinal guide beams 5, and the bearing support is slidably arranged on the top of the transverse fixed beam 6. The longitudinal guide beam 5 is provided with two H-shaped steels spliced ​​to each other, and ribs 11 are added on both sides of the web of the H-shaped steel by welding, so as to strengthen the structural strength of the H-shaped steel, and the two ribs 11 located between the H-shaped steels spliced ​​to each other are placed in the H-shaped steels corresponding thereto, which can further strengthen the structural strength of the longitudinal guide beam 5 and improve its own bearing capacity; the transverse fixed beam 6 is also composed of two H-shaped steels spliced ​​to each other, and ribs 11 are added on both sides of the web of the H-shaped steel by welding, so as to strengthen the structural strength of the H-shaped steel; and the transverse fixed beam 6 is fixed to the longitudinal guide beam 5 by bolts or welding, and the installation positions of the transverse fixed beam 6 and the longitudinal guide beam 5 can be adjusted according to actual conditions, so as to ensure that the steel box beam 7 in the jacking moves in the slide rail system formed by the above structure, thereby improving the installation accuracy of the steel box beam 7.

[0034] In some technical solutions of the utility model, the bearing support includes at least 4 bearing platforms 8 arranged in sequence along the extension direction of the transverse fixed beam 6, and a group of two bearing platforms 8 are respectively on the same transverse fixed beam 6, and any two adjacent bearing platforms 8 are detachably connected through a connecting member 16 (88 hinge), and the bearing platforms 8 are provided with a plurality of sliding components slidably connected to the transverse fixed beam 6. By forming a plurality of bearing platforms 8 into independent bearing bodies and realizing the detachable connection of any two bearing platforms 8 through the 88 hinge, the connection status of any two adjacent bearing platforms 8 can be adjusted according to actual conditions to ensure smooth installation of the steel box beam 7.

[0035] In some technical solutions of the utility model, the sliding assembly includes a positioning plate 12 connected to the bearing platform 8, a skateboard support 13 is provided on the side wall of the positioning plate 12 opposite to the transverse fixed beam 6, a skateboard 14 in contact with the transverse fixed beam 6 is provided on the skateboard support 13, and a guide frame 10 is provided on both sides of the bearing platform 8, and a guide block is provided on the side of the guide frame 10 in contact with the transverse fixed beam 6. The sliding assembly is also called a rowing structure. The bearing platform 8 is also called a rowing boat.

[0036] The slide plate support 13 is a PTFE slide plate 14 rubber support, the positioning steel plate is a stainless steel plate, and the movable distribution beam guide frame 10 is added on both sides of the bearing platform 8 to limit the longitudinal sliding of the movable distribution beam. A PTFE slide plate 14 guide block is set at the contact position between the lower part of the guide frame 10 and the transverse fixed distribution beam to ensure that when the bearing platform 8 carries the steel box beam 7 to move, the above structure can move along the predetermined route on the transverse fixed beam 6 without causing damage to the steel structure and affecting the normal operation of the equipment.

[0037] In some technical solutions of the utility model, a jacking mechanism 9 is provided between the bearing platform 8 and the transverse fixed beam 6. The jacking mechanism 9 is a synchronous 200T jack, which is used to buffer and support the steel box beam 7 to avoid the problem that the equipment cannot operate normally when the gravity exerted by the steel box beam 7 on the bearing platform 8 acts completely on the sliding component.

[0038] In the actual installation process, after the first bracket and the second bracket are respectively installed on the existing cap beam and the cap beam 2 to be installed, the slide rail system is installed; and the two transverse fixed beams 6 are ensured to be parallel to each other on the longitudinal guide beam 5; when the rowing boat passes through the first bracket on the existing cap beam to reach the second bracket on the cap beam 2 to be installed, the lower part of the rowing boat is suspended, so the rowing boat of the corresponding section is disconnected in the middle of the rowing boat; when the left and right webs of the steel box beam 7 pass through the suspended area, the rowing boat is disconnected to make the single rowing boat bear force;

[0039] When the assembled steel box girder 7 is in the process of transverse movement, when its whole structure is completely located on the existing cap beam bridge deck and moves, the pulleys 1-1, 2-1, 3-1 and 4-1 are all subjected to force;

[0040] When the boat is about to leave the existing cap beam bridge deck and the boat 2-1 is empty, the connecting hinge of the boat 2-1 is disconnected to minimize the influence on the deformation of the bracket during the movement of the boat;

[0041] When the boats 2-1 and 4-1 are about to reach the second bracket on the cap beam 2 to be installed, the hinge connecting the boat 2-1 and the boat 1-1 are about to be vacated, and the link hinge of the boat 1-1 is disconnected;

[0042] When the pulley 4-1 is about to be emptied, disconnect the connecting hinge of the pulley 4-1;

[0043] The steel box girder 7 has been moved horizontally and is ready for subsequent beam dropping operations;

[0044] After the steel box girder 7 is pushed to the designated position, jacks are arranged and the first support and the second support are gradually removed, and finally the beam is lowered to the permanent pier.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for installing a small radius curved steel-concrete beam, characterized in that: It includes a first bracket installed on an existing cap beam, a second bracket installed on a cap beam to be installed, and a bearing support. The top of the first bracket is flush with the top of the second bracket to form a translation base surface. The bearing support is installed on the translation base surface. An adjustment component for controlling the lateral or longitudinal movement of the bearing support is provided between the bearing support and the translation base surface.

2. The device for installing a small radius curved steel-concrete beam according to claim 1, characterized in that: The second bracket includes a plurality of support members arranged in an array, and one end of the support member is fixedly connected to the top of the cap beam to be installed.

3. The device for installing a small radius curved steel-concrete beam according to claim 2, characterized in that: A stabilizing structure is provided between any two adjacent support members.

4. The device for installing a small radius curved steel-concrete beam according to claim 1 or 2, characterized in that: The first bracket has the same structure as the second bracket.

5. The device for installing a small radius curved steel-concrete beam according to claim 1, characterized in that: The adjustment assembly includes a plurality of longitudinal guide beams installed on the top of the first bracket or the second bracket, a transverse fixed beam is installed on the top of the plurality of longitudinal guide beams, and the bearing support is slidably arranged on the top of the transverse fixed beam.

6. The device for installing a small radius curved steel-concrete beam according to claim 4, characterized in that: The bearing support includes a plurality of bearing platforms sequentially arranged along the extension direction of the transverse fixed beam, any two adjacent bearing platforms are detachably connected via a connecting piece, and a plurality of sliding components slidably connected to the transverse fixed beam are disposed on the bearing platforms.

7. The device for installing a small radius curved steel-concrete beam according to claim 6, characterized in that: The sliding assembly includes a positioning plate connected to the supporting platform, a skateboard support is provided on the side wall of the positioning plate opposite to the transverse fixed beam, a skateboard in contact with the transverse fixed beam is provided on the skateboard support, guide frames are provided on both sides of the supporting platform, and a guide block is provided on the side of the guide frame in contact with the transverse fixed beam.

8. The device for installing a small radius curved steel-concrete beam according to claim 6, characterized in that: A lifting mechanism is provided between the bearing platform and the transverse fixed beam.

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