Large-span reinforced concrete building structure
By setting up a buffer device between the inner ends of the truss of a large span building and connecting it with the spine, the problem of easy cracking and welding at the connection between the inner end of the truss and the spine is solved, and the service life of the structure is improved.
Patent Information
- Application Number
- CN202421332864.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-12
AI Technical Summary
In large-span building structures, the trusses under the steel frame are easily subjected to forces from the left and right directions, resulting in cracking and welding at the connection between the inner end and the spine, reducing the service life of the steel structure.
A large-span reinforced concrete building structure is designed. By setting a buffer device between the inner ends of the truss, it buffers the stress in the left and right directions, and connects the buffer device to the lower end of the spine to reduce the stress at the connection between the inner end of the truss and the spine.
Through the compression deformation of the buffer device, the stress in the left and right directions is effectively buffered, which improves the service life of the connection between the inner end of the truss and the spine, and extends the service life of the steel structure.
Smart Images
Figure CN222685863U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of building construction, and in particular to a large-span reinforced concrete building structure. Background Art
[0002] Large-span building structures usually refer to buildings with a span of more than 30m. my country's current steel structure specifications stipulate that structures with a span of more than 60m are large-span structures. Large-span building structural forms and architectural shapes, large-span building types: arch structure, rigid frame structure, truss structure, grid structure, folded plate structure, thin shell structure, cable suspension structure, membrane structure.
[0003] In large-span building structures, in order to meet the mechanical requirements of large spans, trusses are usually set up under the steel frame. The truss is a lattice system composed of chain rods. When the load acts only on the nodes, the rods only bear axial force, and there is only uniformly distributed positive stress on the cross section. It is the most ideal structural form. The two ends of the truss are usually fixed to the steel frame by bolts, and the contact position between the truss and the lower end surface of the steel frame is usually welded.
[0004] During use, the trusses under the steel frame will be subjected to forces in the left and right directions, so the connection between the inner end of the truss and the ridgepole is prone to cracking and welding, reducing the service life of the steel structure. Utility Model Content
[0005] In response to the shortcomings of the prior art, the present application provides a large-span reinforced concrete building structure with advantages such as improving the service life of the truss structure. It solves the problem that during use, the truss below the steel frame will be subjected to forces in the left and right directions, so the connection between the inner end of the truss and the spine beam is prone to cracking and welding.
[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a large-span reinforced concrete building structure, including a steel frame, the steel frame including vertical support columns on both sides and a top beam connecting the top ends of the two support columns together, a spine beam is fixedly arranged in the middle of the lower end surface of the top beam along the front-to-back direction, a side beam is fixedly arranged in the front-to-back direction at the intersection of the top beam and the support columns, two left-right symmetrical trusses are fixedly arranged on the lower end surface of the top beam, the outer ends of the two trusses are respectively hinged to the corresponding side beams, the inner ends of the two trusses are connected to the spine beam, and a buffer device is arranged between the inner ends of the two trusses, and the buffer device buffers the stress of the two trusses in the left-right direction.
[0007] Through the above scheme, when in use, several steel frames are set in the front and rear directions as needed, and then each steel frame is connected together through the spine and side beams, and then the outer ends of the prefabricated trusses are hinged to the side beams, and the positions where the outer ends of the trusses are hinged to the side beams correspond to the steel frames, and then the inner ends of the two trusses are fixed to the buffer devices on the lower end surface of the spine beam by bolts, and then the trusses are welded and fixed to the top beams, and then concrete is poured on the top beams above the spine and side beams to form a ceiling. The pouring of concrete is the existing technology for concrete pouring, which will not be repeated here. During use, the trusses under the two top beams will be subjected to forces in the left and right directions, so the connection between the inner ends of the trusses and the spine beams is prone to cracking and welding, which reduces the service life of the steel structure. In order to solve this problem, the two inner ends of the trusses are connected together by the provided buffer device, and then the buffer device is connected to the lower end surface of the spine beam. When the two trusses are subjected to stress in the left and right directions during use, the stress in the left and right directions is buffered by the compressive deformation of the buffer device, thereby improving the service life of the connection between the inner ends of the two trusses and the spine in the prior art.
[0008] Furthermore, the truss includes a truss beam, and a plurality of diagonal rods and vertical rods fixedly arranged on the upper end surface of the truss beam, the top end of each diagonal rod and vertical rod is fixedly arranged on the top beam, the outer end of the truss beam is hinged to the side beam, and the inner end of the truss beam is connected to the buffer device.
[0009] Through the above scheme, when using, when installing the truss, the outer end of the truss is first hinged to the side beam, and then the inner end of the truss is connected to the buffer device, and then the top end of each diagonal rod and vertical rod is welded to the lower end face of the top beam.
[0010] Furthermore, the buffer device includes two sliders slidably arranged on the lower end surface of the spine, a buffer spring is arranged between the two sliders, and mounting holes are provided on the two sliders, and the center of the mounting hole is concentric with the center of the spring; mounting plates are fixedly arranged at the inner ends of the two trusses, and each mounting plate is provided with a through hole matching the mounting hole.
[0011] Through the above scheme, during installation, the outer ends of the two trusses are hinged to the side beams, and then the inner ends of the two trusses are made to abut against the two sliders through the mounting plate, so that the two sliders compress the buffer spring, and then the through bolts are passed through the through holes of the two mounting plates and the mounting holes of the two sliders, and the through bolts also pass through the inside of the buffer spring, and then the nuts are screwed on. Rotating the nuts can further compress the buffer spring and keep the buffer spring within the set compression range. During use, when the two trusses are subjected to stress in the left and right directions, the inner ends of the two trusses will move slightly closer to each other or away from each other, and then drive the two sliders to move through the mounting plate. The movement of the two sliders compresses or stretches the buffer spring, and the deformation of the buffer spring buffers and blocks the movement of the two sliders, effectively reducing the stress at the connection between the inner ends of the two trusses and the spine beam, thereby improving the service life.
[0012] Furthermore, an inverted trapezoidal groove is provided in the left-right direction on the lower end surface of the spine corresponding to the slider, and a slide plate is slidably connected in the trapezoidal groove. Two symmetrical threaded holes are provided on both sides of the lower end surface of the slide plate, and each threaded hole is threaded with a top screw, and the lower end surface of the slide plate is slidably connected to the two sliders.
[0013] Through the above scheme, during installation, the positions of the two sliders can be adjusted as a whole by moving the slide plate left and right, making it more convenient to connect the two trusses with the sliders through the mounting plate. The overall positions of the two sliders can be adjusted according to the needs of on-site construction. When the position of the slide plate is determined, the position of the slide plate is fixed by turning the knob to make the top of the top screw press against the inner top wall of the trapezoidal groove.
[0014] Furthermore, an auxiliary rod is arranged on the upper end surface of the truss beam, and the top end of the auxiliary rod is hinged to the lower end surface of the backbone beam through a fixing block arranged on the lower end surface of the backbone beam.
[0015] Through the above solution, by providing the auxiliary rod, the connection between the inner end of the truss beam and the backbone beam is made more stable.
[0016] Furthermore, the fixed block is arranged on the lower end surface of the slide for sliding left and right, and a locking structure is also arranged on the fixed block for realizing the switching between the fixed block and the slide for fixing the position and sliding left and right. When the locking structure is opened, the fixed block and the slide are kept in a fixed position to form a whole. When the locking structure is closed, the fixed block and the slide are released from the fixed position to realize sliding left and right.
[0017] Through the above scheme, when installing the truss, after the outer end of the truss is hinged to the side beam, the inner end of the truss is fixed to the slider through the mounting plate by bolts, and then the auxiliary rod is installed. The auxiliary rod is docked with the fixed block so that the hinge holes of the auxiliary rod and the fixed block are aligned, which is convenient for inserting the bolts. Due to the error of the processed components or the error of the construction, there will often be errors during installation here, which will cause the hinge holes of the auxiliary rod and the fixed block to be misaligned. At this time, the locking structure can be closed so that the fixed block can slide relative to the slide, which is convenient for aligning the hinge holes of the fixed block with the hinge holes of the auxiliary rod, and then insert the bolts to fix them. At this time, the locking structure is opened again so that the fixed block and the slide remain in a fixed position. The sliding setting of the fixed block and the slide makes the installation of the auxiliary rod more convenient.
[0018] Furthermore, a sliding groove is provided on the lower end surface of the slide plate in the left-right direction, and a strip slider adapted to the sliding groove is provided on the upper end surface of the fixed block. The fixed block is slidably connected to the slide plate in the left-right direction through the strip slider and the sliding groove, and the strip slider protrudes outward from the side surface of the fixed block. The locking structure includes a locking bolt arranged on the strip slider protruding from the side surface of the fixed block, and the locking bolt is threadedly connected to the strip slider.
[0019] Through the above scheme, when the locking structure needs to be opened, the locking bolt is rotated so that the top end of the locking bolt is pressed against the inner top wall of the slide slot, thereby fixing the position of the fixed block and the slide plate; when the locking structure needs to be closed, the locking bolt is rotated so that the top end of the locking bolt moves downward and disengages from the inner top wall of the slide slot, thereby enabling the fixed block and the slide plate to slide left and right.
[0020] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0021] The invention relates to a large-span reinforced concrete building structure. When the device is installed, the two inner ends of the trusses are connected together by a buffer device, and then the buffer device is connected to the lower end surface of the backbone. When the two trusses are subjected to stress in the left and right directions during use, the stress in the left and right directions is buffered by the compressive deformation of the buffer device, thereby improving the service life of the connection between the inner ends of the two trusses and the backbone in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this application;
[0023] Figure 2 For this application, look at the structural diagram;
[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the steel frame and spine assembly of this application;
[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the truss of this application;
[0026] Figure 5 For this application Figure 4 A schematic diagram of the structure enlargement at point A;
[0027] Figure 6 For this application Figure 4 A schematic diagram of the structure at B in FIG.
[0028] Figure 7 For this application Figure 5 Schematic diagram of the enlarged structure at position C in FIG.
[0029] In the figure:
[0030] 1. Steel frame; 2. Support column; 3. Top beam; 4. Spine beam; 5. Side beam; 6. Truss beam; 7. Diagonal rod; 8. Vertical rod; 9. Slider; 10. Buffer spring; 11. Mounting plate; 12. Auxiliary rod; 13. Fixed block; 14. Trapezoidal groove; 15. Slide plate; 16. Top screw; 17. Slide groove; 18. Strip slider; 19. Locking bolt. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0032] See also Figure 1 - Figure 7 A large-span reinforced concrete building structure in this embodiment includes a steel frame 1, which includes two vertical support columns 2 and a top beam 3 connecting the top ends of the two support columns 2, a spine beam 4 is fixedly arranged in the middle of the lower end surface of the top beam 3 along the front-to-back direction, a side beam 5 is fixedly arranged at the intersection of the top beam 3 and the support column 2 along the front-to-back direction, and two left-right symmetrical trusses are fixedly arranged on the lower end surface of the top beam 3, the outer ends of the two trusses are respectively hinged to the corresponding side beams 5, the inner ends of the two trusses are connected to the spine beam 4, and a buffer device is arranged between the inner ends of the two trusses, which buffers the stress of the two trusses in the left-right direction.
[0033] When in use, several steel frames 1 are arranged in the front and rear directions as needed, and then each steel frame 1 is connected together through the spine 4 and the side beams 5, and then the outer ends of the prefabricated trusses are hinged to the side beams 5, and the positions where the outer ends of the trusses are hinged to the side beams 5 correspond to the steel frames 1, and then the inner ends of the two trusses are fixed to the buffer devices on the lower end surface of the spine 4 by bolts, and then the trusses are welded and fixed to the top beams 3, and then concrete is poured on the top beams 3 above the spine 4 and the side beams 5 to form a ceiling. The pouring of concrete is the existing technology of concrete pouring, which will not be repeated here. During use, the trusses under the two top beams 3 will be subjected to forces in the left and right directions, so the connection between the inner end of the truss and the backbone beam 4 is prone to cracking and welding, which reduces the service life of the steel structure. In order to solve this problem, the two inner ends of the trusses are connected together by a buffer device, and then the buffer device is connected to the lower end surface of the backbone beam 4. When the two trusses are subjected to stress in the left and right directions during use, the stress in the left and right directions is buffered through the compressive deformation of the buffer device, thereby improving the service life of the connection between the inner ends of the two trusses and the backbone beam 4 in the prior art.
[0034] The truss includes a truss beam 6, and a plurality of diagonal rods 7 and vertical rods 8 fixed to the upper end surface of the truss beam 6. The top end of each diagonal rod 7 and vertical rod 8 is fixed to the top beam 3. The outer end of the truss beam 6 is hinged to the side beam 5, and the inner end of the truss beam 6 is connected to the buffer device.
[0035] During use, when installing the truss, the outer end of the truss beam 6 is first hinged to the side beam 5, and then the inner end of the truss beam 6 is connected to the buffer device, and then the top end of each diagonal rod 7 and vertical rod 8 is welded to the lower end surface of the top beam 3.
[0036] The buffer device includes two sliders 9 which are slidably arranged on the lower end surface of the backbone 4, a buffer spring 10 is arranged between the two sliders 9, and mounting holes are provided on the two sliders 9, and the center of the mounting hole is concentric with the center of the spring; the inner ends of the two trusses 6 are fixedly provided with mounting plates 11, and each mounting plate 11 is provided with a through hole adapted to the mounting hole; during installation, the outer ends of the two trusses 6 are hinged to the side beams 5, and then the inner ends of the two trusses 6 are abutted against the two sliders 9 through the mounting plates 11, so that the two sliders 9 compress the buffer springs 10, and then the through bolts are passed through the through holes of the two mounting plates 11 and the mounting holes of the two sliders 9, and the through bolts also pass through the inside of the buffer springs 10, and then the nuts are screwed on, and the rotating nuts can further compress the buffer springs 10, and keep the buffer springs 10 within the set compression range. When in use, when the two trusses 6 are subjected to left and right forces, the two When the stress is applied in the left and right directions, the inner ends of the two trusses 6 will move slightly closer to each other or away from each other, and then the two sliders 9 will be driven to move through the mounting plate 11. The movement of the two sliders 9 compresses or stretches the buffer spring 10. Sometimes, due to the deformation of the steel structure, the two mounting plates 11 may move a distance closer to each other in the original assembly position. At this time, the outer sides of the two mounting plates 11 maintain a distance from the nut. When the two trusses 6 are subjected to stress in the left and right directions, the two sliders 9 will be driven to move through the mounting plate 11. The movement of the two sliders 9 compresses or stretches the buffer spring 10. The buffer spring 10 can be further compressed by rotating the nut, keeping the buffer spring 10 within the set compression range. The movement of the two sliders 9 is buffered and blocked by the deformation of the buffer spring 10, thereby effectively reducing the stress at the connection between the inner ends of the two trusses 6 and the spine beam 4 and improving the service life.
[0037] In order to improve the stability of the connection between the inner end of the truss 6 and the backbone 4, in this embodiment, an auxiliary rod 12 is fixedly provided on the upper end surface of the truss 6, and the top end of the auxiliary rod 12 is hinged to the lower end surface of the backbone 4 through a fixed block 13 fixedly provided on the lower end surface of the backbone 4; by providing the auxiliary rod 12, the connection between the inner end of the truss 6 and the backbone 4 is made more stable.
[0038] In order to make it more convenient to install the inner ends of the two trusses 6 with the two sliders 9, in the present embodiment, an inverted trapezoidal groove 14 is further provided in the left-right direction on the lower end surface of the spine 4 at the position corresponding to the slider 9, and a slide plate 15 is slidably connected in the trapezoidal groove 14, and two symmetrical threaded holes are provided on both sides of the lower end surface of the slide plate 15, and a top screw 16 is threadedly connected in each threaded hole, and the lower end surface of the slide plate 15 is slidably connected to the two sliders 9; during installation, the positions of the two sliders 9 can be adjusted as a whole by moving the slide plate 15 left and right, so that the two trusses 6 are more convenient to connect with the sliders 9 through the mounting plate 11, and the overall position of the two sliders 9 can be adjusted according to the needs of on-site construction. When the position of the slide plate 15 is determined, the top screw 16 is turned by the knob to make the top of the top screw 16 press against the inner top wall of the trapezoidal groove 14 to fix the position of the slide plate 15.
[0039] In order to facilitate the installation of the top end of the auxiliary rod 12 and the hinged connection with the spine 4, in this embodiment, the fixed block 13 is set on the lower end surface of the slide plate 15 for sliding left and right, and the fixed block 13 is also provided with a locking structure for switching the fixed block 13 and the slide plate 15 between a fixed position and sliding left and right. When the locking structure is turned on, the fixed block 13 and the slide plate 15 remain in a fixed position to form a whole. When the locking structure is closed, the fixed block 13 and the slide plate 15 are released from the fixed position to achieve left and right sliding. When installing the truss beam 6, after the outer end of the truss beam 6 is hinged to the side beam 5, the inner end of the truss beam 6 is fixed to the slider 9 through the mounting plate 11 by bolts, and then the auxiliary rod 12 is installed. The auxiliary rod 12 is docked with the fixing block 13 so that the hinge holes of the auxiliary rod 12 and the fixing block 13 are aligned, which is convenient for inserting bolts. Due to the error of the processed components or the error of the construction, there is often an error during installation here, which makes the hinge hole of the auxiliary rod 12 and the hinge hole of the fixing block 13 misaligned. At this time, the locking structure can be closed so that the fixing block 13 can slide relative to the slide plate 15, which is convenient for aligning the hinge hole of the fixing block 13 with the hinge hole of the auxiliary rod 12, and then inserting bolts to fix. At this time, the locking structure is opened again so that the fixing block 13 and the slide plate 15 remain in a fixed position. The sliding setting of the fixing block 13 and the slide plate 15 makes the installation of the auxiliary rod 12 more convenient.
[0040] In this embodiment, a slide groove 17 is provided on the lower end surface of the slide plate 15 along the left and right directions, and a strip slider 18 adapted to the slide groove 17 is provided on the upper end surface of the fixed block 13. The fixed block 13 is slidably connected with the slide plate 15 in the left and right directions through the strip slider 18 and the slide groove 17, and the strip slider 18 protrudes outward from the side surface of the fixed block 13. The locking structure includes a locking bolt 19 arranged on the strip slider 18 protruding from the side surface of the fixed block 13, and the locking bolt 19 is threadedly connected with the strip slider 18; when the locking structure needs to be opened, the locking bolt 19 is rotated so that the top end of the locking bolt 19 is pressed against the inner top wall of the slide groove 17, so that the position of the fixed block 13 and the slide plate 15 is fixed; when the locking structure needs to be closed, the locking bolt 19 is rotated so that the top end of the locking bolt 19 moves downward to disengage the inner top wall of the slide groove 17, so that the fixed block 13 and the slide plate 15 can slide left and right.
[0041] The working principle of the above embodiment is as follows: when constructing a reinforced concrete casting structure, a plurality of steel frames 1 are arranged in the front-to-back direction as needed, and then each steel frame 1 is connected together through the backbone beam 4 and the side beam 5. A plurality of reinforcing beams can be evenly arranged on the upper end surface of each top beam 3 in the front-to-back direction, and then the outer end of the prefabricated truss is hinged to the side beam 5. Specifically, the outer end of the truss beam 6 is hinged to the side beam 5, and the hinge holes of the truss beam 6 and the side beam 5 can be penetrated by bolts. After the outer end of the truss beam 6 is installed, the inner ends of the two truss beams 6 are connected together, so that the inner ends of the two truss beams 6 are abutted against the slider 9 through their respective mounting plates 11, so that the two sliders 9 squeeze the buffer spring 10. When the inner ends of the two truss beams 6 are abutted against the slider 9 through the mounting plates 11, the slide plate 15 can be moved as needed to adjust the overall position of the two sliders 9. After the position of the slide plate 15 is determined, the top screw 16 is screwed so that the top screw 16 is pressed against the inner top wall of the trapezoidal groove 14, so that the position of the slide plate 15 is fixed. Then use bolts to penetrate the through holes of the two mounting plates 11 and the mounting holes of the two sliders 9, and then screw on the nuts. Turning the nuts can further compress the buffer spring 10, keep the buffer spring 10 within the set compression range, and then hinge the top end of the auxiliary rod 12 with the lower end surface of the spine 4 through the fixing block 13. During installation, the fixing block 13 can slide left and right to facilitate the installation of the auxiliary rod 12, and then weld the top ends of each diagonal rod 7 and vertical rod 8 on the truss beam 6 to the lower end surface of the top beam 3 to complete the installation of a truss of the steel frame 1. During use, when the two trusses 6 are subjected to stress in the left and right directions, the inner ends of the two trusses 6 will move slightly closer to each other or away from each other, and then drive the two sliders 9 to move through the mounting plate 11, and the movement of the two sliders 9 is transmitted to the buffer spring 10. The deformation of the buffer spring 10 buffers and blocks the movement of the two sliders 9, effectively reducing the stress at the connection between the inner ends of the two trusses 6 and the spine 4, and improving the service life.
[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" 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 other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0043] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A long-span reinforced concrete building structure, comprising a steel frame (1), wherein the steel frame (1) comprises vertical support columns (2) on both sides and a top beam (3) connecting the top ends of the two support columns (2), characterized in that: A spine beam (4) is fixedly arranged in the middle of the lower end surface of the top beam (3) along the front-to-back direction, a side beam (5) is fixedly arranged in the front-to-back direction at the intersection of the top beam (3) and the support column (2), and two left-right symmetrical trusses are fixedly arranged on the lower end surface of the top beam (3), the outer ends of the two trusses are respectively hinged to the corresponding side beams (5), the inner ends of the two trusses are connected to the spine beam (4), and a buffer device is arranged between the inner ends of the two trusses.
2. A long-span reinforced concrete building structure according to claim 1, characterized in that: The truss comprises a truss beam (6), and a plurality of diagonal rods (7) and vertical rods (8) fixedly arranged on the upper end surface of the truss beam (6), the top end of each of the diagonal rods (7) and vertical rods (8) being fixedly arranged on the top beam (3), the outer end of the truss beam (6) being hinged to the side beam (5), and the inner end of the truss beam (6) being connected to the buffer device.
3. A long-span reinforced concrete building structure according to claim 2, characterized in that: The buffer device comprises two sliders (9) slidably arranged on the lower end surface of the backbone (4) to the left and right, a buffer spring (10) being fixedly arranged between the two sliders (9), and mounting holes being provided on the two sliders (9), the center of the mounting holes being concentric with the center of the spring; mounting plates (11) are fixedly arranged on the inner ends of the two trusses (6), and each mounting plate (11) is provided with a through hole matching the mounting hole.
4. A long-span reinforced concrete building structure according to claim 3, characterized in that: An inverted trapezoidal groove (14) is provided in the left-right direction on the lower end surface of the ridge beam (4) at a position corresponding to the slider (9), a slide plate (15) is slidably connected in the trapezoidal groove (14), two symmetrical threaded holes are provided on both sides of the lower end surface of the slide plate (15), a top screw (16) is threadedly connected in each of the threaded holes, and the lower end surface of the slide plate (15) is slidably connected to the two sliders (9).
5. A long-span reinforced concrete building structure according to claim 4, characterized in that: An auxiliary rod (12) is fixedly arranged on the upper end surface of the truss beam (6), and the top end of the auxiliary rod (12) is hingedly connected to the lower end surface of the backbone beam (4) via a fixing block (13) fixedly arranged on the lower end surface of the backbone beam (4).
6. A long-span reinforced concrete building structure according to claim 5, characterized in that: The fixed block (13) is arranged on the lower end surface of the slide plate (15) for sliding left and right, and the fixed block (13) is also provided with a locking structure for realizing the switching between the fixed block (13) and the slide plate (15) between a fixed position and sliding left and right. When the locking structure is opened, the fixed block (13) and the slide plate (15) are kept in a fixed position to form a whole. When the locking structure is closed, the fixed block (13) and the slide plate (15) are released from the fixed position and can slide left and right.
7. A long-span reinforced concrete building structure according to claim 6, characterized in that: The lower end surface of the slide plate (15) is provided with a slide groove (17) in the left-right direction, and the upper end surface of the fixed block (13) is provided with a strip slider (18) adapted to the slide groove (17). The fixed block (13) is slidably connected to the slide plate (15) in the left-right direction via the strip slider (18) and the slide groove (17). The strip slider (18) protrudes outward from the side surface of the fixed block (13). The locking structure comprises a locking bolt (19) arranged on the strip slider (18) protruding from the side surface of the fixed block (13), and the locking bolt (19) is threadedly connected to the strip slider (18).