A bundled steel construction installation structure for a cross beam

Abstract

The utility model discloses a kind of for beam's bao steel construction installation structure, including U-shaped steel frame and two lifting mechanisms;Two the lifting mechanisms are equipped in the lower side of beam, the two sides of the U-shaped steel frame are placed respectively in the driving end of two lifting mechanisms, the lifting mechanism is used to drive the U-shaped steel frame lifting;The U-shaped steel frame is installed in the outer side of the beam, and is covered in the two side walls and bottom wall of the beam. By the cooperation design of U-shaped steel frame and lifting mechanism, the support structure that can be synchronous lifting is set in the two sides of beam, ensure that U-shaped steel frame keeps horizontal stable in the process of lifting, it is convenient and the outer surface of beam is closely combined, the three-dimensional structure of U-shaped steel frame naturally forms the wrapping state to beam in the process of lifting, simplifies the positioning adjustment step, improves construction efficiency and installation accuracy, simultaneously reduces the risk of high-altitude operation.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a steel-encased construction and installation structure for crossbeams. Background Technology

[0002] In the field of building construction, as buildings age, some early-built structures may gradually experience structural performance degradation due to limitations in construction techniques, insufficient material properties, long-term environmental erosion, and excessive loads. Load-bearing beams, as key structural components, directly affect the overall structural safety. Professional testing and evaluation have revealed that a significant number of older buildings have load-bearing beams with insufficient strength and reduced load-bearing capacity, primarily manifested in actual load-bearing capacity falling below current safety standards or design expectations. This reduction in load-bearing capacity constitutes a serious safety hazard, significantly increasing the risk of partial or even complete structural collapse.

[0003] To effectively address the aforementioned safety hazards, extend the service life of buildings, and ensure the safety of people and property, the "steel-wrapping reinforcement method" has become a common and important technical means to repair and enhance the load-bearing capacity of such old load-bearing beams. The core of this technology lies in wrapping a closed or semi-closed frame structure formed by welding or connecting high-strength steel plates around the load-bearing beam to be reinforced (mainly referring to the bottom and sides), thereby significantly improving the beam's bending and shear resistance.

[0004] However, in the actual construction of steel reinforcement, especially when precisely setting and installing this steel plate frame structure at the bottom and sides of the load-bearing beams, construction workers face the problem of limited operating space at the bottom of the beams and extreme difficulty in positioning, adjusting, and fixing large components. This directly affects the reliability of the reinforcement effect and the construction efficiency. Utility Model Content

[0005] In response to the problems raised in the background art, the purpose of this utility model is to propose a steel-encased construction and installation structure for crossbeams, which solves the problems of limited operating space at the bottom of the crossbeam and difficulty in positioning and adjusting the U-shaped steel frame in traditional steel-encased reinforcement construction.

[0006] To achieve this objective, the present invention adopts the following technical solution: A steel-clad construction and installation structure for crossbeams includes a U-shaped steel frame and two lifting mechanisms; The two lifting mechanisms are located on both sides below the crossbeam, and the two sides of the U-shaped steel frame are respectively placed at the drive ends of the two lifting mechanisms. The lifting mechanisms are used to drive the U-shaped steel frame to lift. The U-shaped steel frame is installed on the outside of the crossbeam and covers the side walls and bottom wall of the crossbeam.

[0007] Preferably, the lifting mechanism includes a base, a lifting drive unit, and a support platform; The support platform is located above the base via the lifting drive unit, and the lifting drive unit drives the support platform to rise and fall. The U-shaped steel frame is placed on the top surface of the support platform.

[0008] Preferably, it also includes an electromagnet, which is mounted on the bottom surface of the support platform.

[0009] Preferably, the U-shaped steel frame includes two first horizontal steel beams, a second horizontal steel beam, and several U-shaped steel supports; The two first horizontal steel beams are fixedly connected by a plurality of U-shaped steel brackets. The two first horizontal steel beams are parallel to each other and are respectively located on both sides of the top of the U-shaped steel brackets. The plurality of U-shaped steel brackets are spaced apart along the length of the first horizontal steel beams and are parallel to each other. The second horizontal steel beam is located at the bottom of the U-shaped steel brackets and is respectively connected to the plurality of U-shaped steel brackets. The two first horizontal steel beams are connected to the ceiling by fasteners, and several U-shaped steel supports and the second horizontal steel beams are connected to the beams by the fasteners.

[0010] Preferably, the U-shaped steel support includes a left vertical beam, a right vertical beam, and a connecting beam; The connecting beam is horizontally arranged, with one end connected to the bottom of the left vertical beam and the other end connected to the bottom of the right vertical beam. The top of the left vertical beam is connected to a first horizontal steel beam, and the top of the right vertical beam is connected to another first horizontal steel beam. The second horizontal steel beam is connected to the connecting beam.

[0011] Preferably, the U-shaped steel frame further includes at least two third horizontal steel beams, which extend along the length of the first horizontal steel beams; One of the third horizontal steel beams is connected to the left vertical beam of one of the U-shaped steel supports, and the other of the third horizontal steel beams is connected to the right vertical beam of one of the U-shaped steel supports.

[0012] Preferably, the fastener is an expansion bolt, and the outer walls of the crossbeam and the ceiling are provided with drilled holes. The expansion end of the expansion bolt is fixed in the drilled hole, and the nut end of the expansion bolt is welded to the first crossbeam, the second crossbeam, the third crossbeam, or the U-shaped steel bracket.

[0013] Preferably, an epoxy resin layer is provided between the U-shaped steel frame and the crossbeam.

[0014] Preferably, the edges of the U-shaped steel frame and the surface of the crossbeam are provided with an edge sealing structure.

[0015] Compared with the prior art, one of the above technical solutions has the following beneficial effects: Through the coordinated design of the U-shaped steel frame and the lifting mechanism, support structures that can be raised and lowered synchronously are set on both sides of the crossbeam to ensure that the U-shaped steel frame remains horizontal and stable during the lifting process, which facilitates a tight fit with the outer surface of the crossbeam. The three-sided integrated structure of the U-shaped steel frame naturally forms a wrapping state around the crossbeam during the lifting process, which simplifies the positioning and adjustment steps, improves construction efficiency and installation accuracy, and reduces the risk of high-altitude operations. Attached Figure Description

[0016] Figure 1 This is a structural diagram showing the crossbeams before steel encasing was implemented. Figure 2 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 3 This is a structural schematic diagram of one embodiment of the U-shaped steel frame of this utility model.

[0017] The components include: crossbeam 01, ceiling 02, ground 03, U-shaped steel frame 1, first horizontal steel beam 11, second horizontal steel beam 12, U-shaped steel bracket 13, left vertical beam 131, right vertical beam 132, connecting beam 133, third horizontal steel beam 14, lifting mechanism 2, base 21, lifting drive unit 22, support platform 23, electromagnet 24, and fasteners 3. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0021] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following is in conjunction with the appendix Figures 1 to 3 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0023] A steel-clad construction and installation structure for crossbeams includes a U-shaped steel frame 1 and two lifting mechanisms 2; The two lifting mechanisms 2 are located on both sides below the crossbeam 01, and the two sides of the U-shaped steel frame 1 are respectively placed at the driving ends of the two lifting mechanisms 2. The lifting mechanisms 2 are used to drive the U-shaped steel frame 1 to lift. The U-shaped steel frame 1 is installed on the outside of the crossbeam 01 and covers the two side walls and the bottom wall of the crossbeam 01.

[0024] The U-shaped steel frame 1 refers to a three-sided enclosure structure made of steel, with a U-shaped open cross-section. This structure can cover the two lateral surfaces and the bottom surface of the crossbeam 01. The lifting mechanism 2 refers to a mechanical device with vertical lifting function. By synchronously controlling the lifting stroke of the two lifting mechanisms 2, the U-shaped steel frame 1 is ensured to remain horizontal during the lifting process.

[0025] Specifically, when the lifting mechanism 2 is activated, the two drive ends rise synchronously, causing the U-shaped steel frame 1 to move vertically. During the ascent, the opening of the U-shaped steel frame 1 gradually approaches the bottom of the crossbeam 01 until the entire U-shaped steel frame 1 completely encloses the side and bottom walls of the crossbeam 01. Because the movement trajectory of the lifting mechanism 2 is vertical, the operation of pushing the frame laterally required in traditional construction is avoided, thus eliminating the operational obstacles caused by the narrow space at the bottom of the crossbeam 01. The contact surface between the U-shaped steel frame 1 and the crossbeam 01 forms a stable support through three-sided positioning. After completing the lifting, the lifting mechanism 2 remains fixed, providing a stable working platform for the subsequent installation and connection of the U-shaped steel frame 1 and the crossbeam 01.

[0026] Compared to existing technologies, traditional methods require construction workers to perform horizontal adjustments and temporary fixation of the frame within a confined space at the bottom of the beam, resulting in high operational risks and poor positioning accuracy. This solution transforms the installation of the U-shaped steel frame 1 into a controllable mechanical movement process through the vertical drive of the lifting mechanism 2, eliminating the need for manual intervention in the bottom space. Simultaneously, the three-sided covering shape of the U-shaped steel frame 1 automatically aligns with and positions itself against the beam 01 during the lifting process, significantly reducing adjustment steps compared to the separate steel plate splicing installation. Through this technical solution, this invention effectively solves the problem of difficult component positioning caused by limited installation space at the bottom of the beam. By replacing manual operation with mechanical lifting, the installation process of the U-shaped steel frame becomes controllable and stable. The three-sided integrated structure of the U-shaped steel frame 1 naturally forms a wrapping state around the beam during the lifting process, simplifying the positioning and adjustment steps, improving construction efficiency and installation accuracy, and reducing the risks of working at height.

[0027] Furthermore, the lifting mechanism 2 includes a base 21, a lifting drive unit 22, and a support platform 23; The support platform 23 is located above the base 21 via the lifting drive unit 22, and the lifting drive unit 22 drives the support platform 23 to rise and fall. The U-shaped steel frame 1 is placed on the top surface of the support platform 23.

[0028] Specifically, the base 21 is a base structure used to support the lifting drive unit 22 and the support platform 23, and can be made of steel plate or precast concrete block with anti-slip texture. The lifting drive unit 22 refers to the power device that drives the vertical movement of the support platform 23, and can be made of hydraulic cylinder, electric push rod or screw mechanism, and the height of the support platform 23 is adjusted by controlling the stroke accuracy. The support platform 23 is a flat plate structure used to directly support the U-shaped steel frame 1, and can be made of steel plate with anti-slip rubber layer on the surface, and its edge is provided with positioning baffles to prevent the U-shaped steel frame 1 from shifting laterally.

[0029] Specifically, the base 21 is anchored to the ground 03 below the crossbeam 01, forming a stable support foundation. The lifting drive unit 22 is installed on the top surface of the base 21, and the support platform 23 is rigidly connected to the output end of the lifting drive unit 22. The support platform 23 remains horizontal during the lifting process. When the U-shaped steel frame 1 is placed on the surface of the support platform 23, the lifting drive unit 22 gradually raises the support platform 23, so that the U-shaped steel frame 1 fits against the bottom of the crossbeam 01 and reaches the preset installation height.

[0030] Furthermore, the bottom of the base 21 is symmetrically provided with multiple movable wheels with locking function, so as to move the lifting mechanism 2 as a whole and ensure that the base 21 does not shift during the lifting process.

[0031] Furthermore, it also includes an electromagnet 24, which is mounted on the bottom surface of the support platform 23.

[0032] The electromagnet 24 can be installed on the bottom surface of the support platform 23 by bolt connection, and generate magnetism through current to magnetically attract the U-shaped steel frame 1 placed on the top surface of the support platform 23, effectively preventing the U-shaped steel frame 1 from shifting due to mechanical vibration or external interference during the lifting process.

[0033] Furthermore, the U-shaped steel frame 1 includes two first horizontal steel beams 11, a second horizontal steel beam 12, and several U-shaped steel supports 13; Two first horizontal steel beams 11 are fixedly connected by a plurality of U-shaped steel supports 13. The two first horizontal steel beams 11 are parallel to each other and are respectively located on both sides of the top of the U-shaped steel supports 13. The plurality of U-shaped steel supports 13 are arranged at intervals along the length direction of the first horizontal steel beams 11 and are parallel to each other. The second horizontal steel beam 12 is located at the bottom of the U-shaped steel supports 13 and is respectively connected to the plurality of U-shaped steel supports 13. The two first horizontal steel beams 11 are connected to the ceiling 02 by fasteners 3, and the several U-shaped steel brackets 13 and the second horizontal steel beams 12 are connected to the horizontal beams 01 by the fasteners 3.

[0034] The top two ends of the U-shaped steel bracket 13 are connected to two parallel first horizontal steel beams 11, forming a grid-like structure covering the sides and bottom of the horizontal beam 01. The bottom of the U-shaped steel bracket 13 forms a continuous support plane through the second horizontal steel beam 12. During installation, the first horizontal steel beam 11 is anchored to the ceiling 02 by fasteners 3 to form a constraint fixation. The U-shaped steel bracket 13 and the second horizontal steel beam 12 are fixed to the side walls and bottom surface of the horizontal beam 01 by fasteners 3 to form a constraint fixation. The structure of the U-shaped steel frame 1 connects several U-shaped steel brackets 13 through the top double beams (first horizontal steel beams 11) and the bottom single beam (second horizontal steel beam 12), forming a reinforced frame around the horizontal beam 01. The spaced U-shaped steel brackets 13 ensure structural rigidity while reducing the self-weight of the components.

[0035] Furthermore, the U-shaped steel support 13 includes a left vertical beam 131, a right vertical beam 132, and a connecting beam 133; The connecting beam 133 is horizontally arranged. One end of the connecting beam 133 is connected to the bottom of the left vertical beam 131, and the other end of the connecting beam 133 is connected to the bottom of the right vertical beam 132. The top of the left vertical beam 131 is connected to a first horizontal steel beam 11, and the top of the right vertical beam 132 is connected to another first horizontal steel beam 11. The second horizontal steel beam 12 is connected to the connecting beam 133.

[0036] The U-shaped steel bracket 13 is a U-shaped support unit composed of a left vertical beam 131, a right vertical beam 132, and a bottom connecting beam 133. The tops of the left vertical beam 131 and the right vertical beam 132 are respectively connected to two parallel first horizontal steel beams 11. By adjusting the distance between them, different widths of horizontal beams 01 can be accommodated. The connecting beam 133 connects the left vertical beam 131 and the right vertical beam 132 laterally at the bottom, and the second horizontal steel beam 12 is connected to the connecting beams 133 of several U-shaped steel brackets, forming a continuous bottom force transmission path, thereby constituting a frame system that covers the horizontal beams 01.

[0037] Furthermore, the U-shaped steel frame 1 also includes at least two third horizontal steel beams 14, which extend along the length direction of the first horizontal steel beam 11; One of the third horizontal steel beams 14 is connected to the left vertical beams 131 of several of the U-shaped steel supports, and the other third horizontal steel beam 14 is connected to the right vertical beams 132 of several of the U-shaped steel supports.

[0038] The third horizontal steel beam 14 is a transverse reinforcing member arranged along the length of the first horizontal steel beam 11. Its function is to provide continuous transverse support for the left vertical beam 131 and the right vertical beam 132, forming a double-sided constraint. The connection points of the third horizontal steel beam 14 with the left vertical beam 131 and the right vertical beam 132 form a spatial grid structure, which disperses the local stress generated by the construction load and provides a stable reference positioning surface for the subsequent installation of the fasteners 3.

[0039] Furthermore, the fastener 3 is an expansion bolt, and the outer walls of the crossbeam 01 and the ceiling 02 are provided with drilled holes. The expansion end of the expansion bolt is fixed in the drilled hole, and the nut end of the expansion bolt is welded to the first crossbeam 11, the second crossbeam 12, the third crossbeam 14 or the U-shaped steel bracket 13.

[0040] Specifically, after pre-drilling holes in the outer walls of beam 01 and ceiling 02, the expansion ends of the expansion bolts are embedded in the holes and expanded to form a reliable anchoring foundation. Subsequently, the nut ends of the expansion bolts are welded to the corresponding positions of the first horizontal steel beam 11, the second horizontal steel beam 12, the third horizontal steel beam 14, or the U-shaped steel bracket 13 in the U-shaped steel frame 1, so that the U-shaped steel frame 1 forms a rigid connection with the building structure. This dual fixing mechanism utilizes the strong anchoring ability of expansion bolts to the concrete structure, and eliminates the vibration loosening that may occur with traditional bolt connections through welding.

[0041] Furthermore, an epoxy resin layer is provided between the U-shaped steel frame 1 and the crossbeam 01.

[0042] The epoxy resin layer refers to a polymer material layer with high adhesion and flowability. Specifically, it can be formed by mixing two-component epoxy resin adhesive and then coating and curing it. The epoxy resin adhesive fills the space between the U-shaped steel frame 1 and the crossbeam 01. In its liquid state, the material can penetrate into the micropores on the surfaces of the U-shaped steel frame 1 and the crossbeam 01. After curing, it forms a rigid interface layer, thereby eliminating the assembly gap between the two and preventing voids.

[0043] Furthermore, the edges of the U-shaped steel frame 1 and the surface of the crossbeam 01 are provided with sealing structures.

[0044] The edge sealing structure refers to the sealing component covering the contact edges between the U-shaped steel frame 1 and the crossbeam 01. This can be achieved using rubber sealing strips or structural adhesive, filling the transition gap between the U-shaped steel frame 1 and the crossbeam 01 to form a continuous, closed, and smoothly transitioned boundary. Specifically, the edge sealing structure at each edge of the U-shaped steel frame 1 prevents the epoxy resin layer from overflowing in the vertical direction and also blocks external contaminants from penetrating the mating surface.

[0045] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A construction installation structure for a bundle of steel for a cross beam, characterized by: Includes a U-shaped steel frame and two lifting mechanisms; The two lifting mechanisms are located on both sides below the crossbeam, and the two sides of the U-shaped steel frame are respectively placed at the drive ends of the two lifting mechanisms. The lifting mechanisms are used to drive the U-shaped steel frame to lift. The U-shaped steel frame is installed on the outside of the crossbeam and covers the side walls and bottom wall of the crossbeam.

2. The steel-encased construction and installation structure for a crossbeam according to claim 1, characterized in that: The lifting mechanism includes a base, a lifting drive unit, and a support platform; The support platform is located above the base via the lifting drive unit, and the lifting drive unit drives the support platform to rise and fall. The U-shaped steel frame is placed on the top surface of the support platform.

3. A construction and installation structure for a cross beam according to claim 2, characterized in that: It also includes an electromagnet, which is mounted on the bottom surface of the support platform.

4. A construction and installation structure for a cross beam according to claim 1, characterized in that: The U-shaped steel frame includes two first horizontal steel beams, a second horizontal steel beam, and several U-shaped steel supports; The two first horizontal steel beams are fixedly connected by a plurality of U-shaped steel brackets. The two first horizontal steel beams are parallel to each other and are respectively located on both sides of the top of the U-shaped steel brackets. The plurality of U-shaped steel brackets are spaced apart along the length of the first horizontal steel beams and are parallel to each other. The second horizontal steel beam is located at the bottom of the U-shaped steel brackets and is respectively connected to the plurality of U-shaped steel brackets. The two first horizontal steel beams are connected to the ceiling by fasteners, and several U-shaped steel supports and the second horizontal steel beams are connected to the beams by the fasteners.

5. A construction and installation structure for a cross beam according to claim 4, characterized in that: The U-shaped steel support includes a left vertical beam, a right vertical beam, and a connecting beam; The connecting beam is horizontally arranged, with one end connected to the bottom of the left vertical beam and the other end connected to the bottom of the right vertical beam. The top of the left vertical beam is connected to a first horizontal steel beam, and the top of the right vertical beam is connected to another first horizontal steel beam. The second horizontal steel beam is connected to the connecting beam.

6. A construction installation structure for a cross beam according to claim 5, characterized in that: The U-shaped steel frame also includes at least two third horizontal steel beams, which extend along the length of the first horizontal steel beams. One of the third horizontal steel beams is connected to the left vertical beam of one of the U-shaped steel supports, and the other of the third horizontal steel beams is connected to the right vertical beam of one of the U-shaped steel supports.

7. A construction and installation structure for a cross beam according to claim 6, characterized in that: The fastener is an expansion bolt. The outer walls of the crossbeam and the ceiling are provided with drilled holes. The expansion end of the expansion bolt is fixed in the drilled hole. The nut end of the expansion bolt is welded to the first crossbeam, the second crossbeam, the third crossbeam, or the U-shaped steel bracket.

8. A construction installation structure for a cross beam according to claim 7, characterized in that: An epoxy resin layer is provided between the U-shaped steel frame and the crossbeam.

9. A construction installation structure for a cross beam according to claim 8, characterized in that: The edges of the U-shaped steel frame and the surface of the crossbeam are provided with sealing structures.

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