Construction method of large-scale arc-shaped inclined wall

Abstract

The application discloses a construction method of an arc-shaped inclined wall of a large venue, and belongs to the technical field of building construction. The method comprises the following steps: fixing steel plate embedded parts on a bottom plate and a top beam between structural columns; installing and welding a I-shaped steel main keel positioned according to a designed arc line and an angle; pouring waterproof concrete ridge platforms to wrap the root of the keel; installing ALC plates with mortise-and-tenon connections between the keels from bottom to top, and positioning the ALC plates by translation and rotation; welding angle steel fixing parts and the main keel at plate joints; sealing top gaps by foaming glue; spraying an inorganic fiber heat preservation layer on the inner side of the wall; and finally, installing a decorative layer composed of square steel pipes and cement fiber plates. The application adopts assembly type construction, reduces on-site wet work, improves efficiency and quality, avoids the problems of misalignment and mortar joints in the traditional masonry method, and realizes efficient, high-quality and environmentally-friendly construction of the arc-shaped inclined wall.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically a construction method for a curved sloping wall in a large stadium. Background Technology

[0002] In the construction of modern large-scale stadiums, the architectural shapes are becoming increasingly complex in order to realize unique and innovative design concepts. For example, some stadium projects are designed with distinctive shapes, like a "sports flower" opening towards the sky. This requires the outer enclosure walls to form a specific outward effect, and they are often designed as composite walls with arcs and outward tilt angles.

[0003] Currently, the construction of such walls commonly employs the method of stacking autoclaved aerated concrete (AAC) blocks. However, this method has many drawbacks. To meet the wall's curvature requirements, the blocks must be cut into smaller pieces for installation. This process is not only time-consuming and labor-intensive but also prone to quality defects such as excessively large mortar joints on the outside and no mortar joints on the inside, demanding extremely high skill levels from the construction workers. To meet the tilt angle requirements, the blocks must be laid out in a staggered manner, resulting in numerous misalignments across the wall surface. This severely affects the subsequent flatness of the wall, necessitating plastering reinforcement and crack-resistant measures, while also consuming a large amount of mortar. Therefore, the existing construction method is neither economical nor can it guarantee construction quality. Thus, the development of an efficient, high-quality, and environmentally friendly construction method for large-scale stadium curved and outwardly tilted composite geometric wall structures is urgently needed. Summary of the Invention

[0004] The present invention aims to solve the above problems, thereby providing a construction method for large venues with curved inclined walls that improves construction efficiency, ensures construction quality, and reduces construction costs.

[0005] The technical solution adopted by the present invention to solve the aforementioned problem is as follows:

[0006] A construction method for a curved sloping wall in a large venue is carried out according to the following steps:

[0007] Step 1: Fix steel plate embedded parts at intervals on the top surface of the bottom slab and the bottom surface of the top beam between two adjacent concrete structural columns;

[0008] Step 2: Install the I-beam main keel in place according to the designed arc and tilt angle, and weld the upper and lower ends of the I-beam main keel to the steel plate embedded parts respectively;

[0009] Step 3: Pour a waterproof concrete sill on the top surface of the base slab, with the root of the I-beam main keel inside the waterproof concrete sill.

[0010] Step 4: Between adjacent I-beam main keels, starting from the waterproof concrete sill, install ALC panels layer by layer upwards until the bottom elevation of the beam; the ALC panel includes a bottom panel, an intermediate panel, and a top panel; the bottom panel has a mortise at the top, the top panel has a tenon at the bottom, and the intermediate panel has a mortise at the top and a tenon at the bottom; during installation, the tenons of adjacent panels are inserted into the mortises;

[0011] Step 5: Install angle steel fasteners at the joints between adjacent ALC boards, and weld the angle steel fasteners to the I-beam main keel for fixation;

[0012] Step Six: Seal the gap between the top slab and the bottom of the top beam with expanding foam.

[0013] Step 7: Apply inorganic fiber spraying to the inner side of the wall assembled from ALC panels to form an insulation layer. The insulation layer and the inner side of the I-beam steel column form a plane.

[0014] Step 8: Install a decorative layer on the surface of the insulation layer. The decorative layer includes square steel pipes arranged in a longitudinal and transverse manner and cement fiberboard fixed to the outside of the square steel pipes.

[0015] Furthermore, the adjacent two I-beam main keels are arranged with a spacing of ≤1000mm; the smaller spacing facilitates the installation of ALC panels and allows the entire wall to be closer to the designed curve.

[0016] Furthermore, the web height of the I-beam main keel is ≥ twice the thickness of the ALC plate; this facilitates the installation of the ALC plate.

[0017] Furthermore, when installing the ALC panel, first slide the ALC panel diagonally between the adjacent main steel keel, then rotate and adjust it to a position parallel to the designed wall surface. The two sides of the ALC panel overlap with the flange plates of the I-beam main steel keel on both sides.

[0018] Furthermore, when the wall height is greater than 4000mm, an I-beam steel wainscoting is added in the middle of the wall height; this effectively disperses the load on the upper part of the wall, transfers part of the load to the main keel, avoids structural deformation of the wall due to load concentration, thereby enhancing the overall load-bearing capacity of the wall and improving the safety of the wall structure.

[0019] Furthermore, the specifications of the I-beam wainscoting are the same as those of the I-beam main keel; this ensures the coordination of force transmission between the wainscoting and the main keel, and ensures that the wainscoting can fully exert its due supporting function.

[0020] Furthermore, when the wall has windows, the spacing of the I-beam main keel and the module of the ALC plate are adjusted according to the size of the wall between the windows.

[0021] Furthermore, the angle steel fastener is welded to the web of the I-beam main keel.

[0022] Furthermore, the longitudinal arrangement of the square steel tubes corresponds to the I-beam main keel, with a transverse spacing of 600mm; this ensures a good stress response between the decorative layer and the main structure of the wall. The longitudinally corresponding arrangement can more effectively transfer the load of the decorative layer to the main keel, while the reasonable transverse spacing ensures the structural stability of the decorative layer itself and helps to extend the service life of the decorative layer.

[0023] Furthermore, the cement fiberboard is fixed to the square steel pipe with self-tapping screws; the operation is simple and the connection is reliable. The self-tapping screws can firmly fix the cement fiberboard to the square steel pipe, reducing the risk of the board loosening or falling off. At the same time, it is convenient for subsequent maintenance and replacement, ensuring the overall appearance and performance of the decorative layer.

[0024] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art:

[0025] The combination of steel main keel and ALC panels enables rapid assembly of curved sloping walls, reducing on-site masonry and wet work, and improving construction efficiency. The ALC panels are connected by mortise and tenon joints to enhance overall integrity and avoid misalignment and uneven mortar joints. Inorganic fiber spray insulation is used to form a flat inner surface with the steel frame, eliminating the need for plastering. The decorative layer is directly fixed to the outside of the insulation layer, which is simple in structure, beautiful and durable. The overall construction method is energy-saving and environmentally friendly, with controllable quality, and is suitable for venue enclosure structures with large height and large span. Attached Figure Description

[0026] Figure 1 This is a top view of the main building structure according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the unfolded facade structure of one section of the main building in an embodiment of the present invention;

[0028] Figure 3 This is an embodiment of the present invention. Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0029] Figure 4 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of a single floor in the middle;

[0030] Figure 5 This is an embodiment of the present invention. Figure 2 Schematic diagram of the cross-sectional structure of BB;

[0031] Figure 6 This is a schematic diagram of the root connection structure of the I-beam steel main keel according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the top connection structure of the I-beam main keel according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the ALC board assembly structure according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the ALC board installation process according to an embodiment of the present invention;

[0035] The following are marked in the diagram: 1. Main building structure; 2. Concrete structural column; 3. Top beam; 4. Base slab; 5. I-beam main keel; 6. Waterproof concrete sill; 7. Bottom slab; 8. Intermediate slab; 9. Top slab; 10. Window; 11. Steel plate embedded part; 12. Angle steel fastener; 13. Cement fiberboard; 14. Square steel pipe; 15. Second square steel; 16. Expansion bolt; 17. Tenon; 18. Mortise. Detailed Implementation

[0036] The present invention will be further described below with reference to embodiments, which are intended only to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0037] See Figures 1-9 A construction method for a curved sloping wall in a large venue, comprising the following steps:

[0038] Step 1: The main building 1 is constructed in sections. Select one section and fix steel plate embedded parts 11 at intervals on the top surface of the bottom plate 4 and the bottom surface of the top beam 3 between two adjacent concrete structural columns 2 in that section; the steel plate embedded parts 11 are fixedly connected to the concrete structure by expansion bolts 16.

[0039] Step 2: Install the I-beam main keel 5 according to the designed arc and tilt angle. The interval between two adjacent I-beam main keels 5 should be ≤1000mm, and the web height of the I-beam main keel 5 should be ≥ twice the thickness of the ALC plate. The upper and lower ends of the I-beam main keel 5 are welded and fixed to the steel plate embedded parts 11 respectively. The I-beam main keel 5 near the concrete structural column 2 is sealed with weather-resistant sealant.

[0040] Step 3: Pour a waterproof concrete sill 6 on the top surface of the base plate 4, with the base of the I-beam main keel 5 cast inside the waterproof concrete sill 6.

[0041] Step 4: Between adjacent I-beam main keels 5, starting from the waterproof concrete sill 6, install ALC panels layer by layer upwards until the bottom elevation of the beam; when installing ALC panels, first slide the ALC panels diagonally between the adjacent main keels, then rotate and adjust them to a position parallel to the designed wall surface. The two sides of the ALC panels overlap with the flange plates of the I-beam main keels 5 on both sides; the ALC panels include a bottom layer 7, an intermediate layer 8, and a top layer 9; the bottom layer 7 has a mortise 18 at the top, the top layer 9 has a tenon 17 at the bottom, and the intermediate layer 8 has a mortise 18 at the top and a tenon 17 at the bottom; during installation, the tenons 17 of adjacent layers are inserted into the mortise 18; when the wall height is greater than 4000mm, add an I-beam wainscoting of the same specifications as the I-beam main keel 5 in the middle of the wall height; when the wall has a window 10 At that time, the spacing of the I-beam main keel 5 and the module of the ALC plate are adjusted according to the size of the window wall; the second square steel 15 is welded to the middle of the web of the I-beam main keel 5 on both sides of the window 10 position, and the ends of the two second square steel 15 are welded with horizontal steel to form a rectangular frame for the installation of the window frame.

[0042] Step 5: Install angle steel fasteners 12 at the joint between adjacent ALC plates, and weld angle steel fasteners 12 to the web of the I-beam main keel 5.

[0043] Step 6: Seal the gap between the top panel 9 and the bottom surface of the top beam 3 with expanding foam.

[0044] Step 7: Apply inorganic fiber spraying to the inner side of the wall assembled from ALC panels to form an insulation layer. The insulation layer and the inner side of the I-beam steel column form a plane.

[0045] Step 8: Install a decorative layer on the surface of the insulation layer. The decorative layer includes square steel pipes 14 arranged longitudinally and transversely and cement fiberboard 13 fixed to the outside of the square steel pipes 14. The longitudinal arrangement of the square steel pipes 14 corresponds to the I-beam main keel 5, and the transverse spacing is 600mm. The cement fiberboard 13 is fixed to the square steel pipes 14 with self-tapping screws. If there is a suspended ceiling inside, the cement fiberboard 13 extends 100mm into the suspended ceiling, eliminating the need for subsequent plastering.

[0046] The two adjacent I-beam main keels are arranged with a spacing of ≤1000mm; the smaller spacing facilitates the installation of ALC panels and makes the entire wall closer to the designed curve.

[0047] The web height of the I-beam main keel 5 is ≥ twice the thickness of the ALC plate; this facilitates the installation of the ALC plate.

[0048] When the wall height is greater than 4000mm, an I-beam steel wainscoting is added in the middle of the wall height; this effectively disperses the load on the upper part of the wall, transfers part of the load to the main keel, avoids structural deformation of the wall due to load concentration, thereby enhancing the overall load-bearing capacity of the wall and improving the safety of the wall structure.

[0049] The specifications of the I-beam steel wainscoting are the same as those of the I-beam steel main keel 5; this ensures the coordination of force transmission between the wainscoting and the main keel, and ensures that the wainscoting can fully play its due supporting role.

[0050] The longitudinal arrangement of the square steel tube 14 corresponds to the I-beam main keel 5, with a transverse spacing of 600mm. This ensures that the decorative layer and the main structure of the wall form a good stress response. The longitudinally corresponding arrangement can more effectively transfer the load of the decorative layer to the main keel, while the reasonable transverse spacing ensures the structural stability of the decorative layer itself and helps to extend the service life of the decorative layer.

[0051] The combination of steel main keel and ALC panels enables rapid assembly of curved sloping walls, reducing on-site masonry and wet work, and improving construction efficiency. The ALC panels are connected by mortise and tenon joints to enhance overall integrity and avoid misalignment and uneven mortar joints. Inorganic fiber spray insulation is used to form a flat inner surface with the steel frame, eliminating the need for plastering. The decorative layer is directly fixed to the outside of the insulation layer, which is simple in structure, beautiful and durable. The overall construction method is energy-saving and environmentally friendly, with controllable quality, and is suitable for venue enclosure structures with large height and large span.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A construction method for a curved sloping wall in a large stadium, characterized in that, Follow these steps: Step 1: Fix steel plate embedded parts at intervals on the top surface of the bottom slab and the bottom surface of the top beam between two adjacent concrete structural columns; Step 2: Install the I-beam main keel in place according to the designed arc and tilt angle, and weld the upper and lower ends of the I-beam main keel to the steel plate embedded parts respectively; Step 3: Pour a waterproof concrete sill on the top surface of the base slab, with the root of the I-beam main keel inside the waterproof concrete sill. Step 4: Between adjacent I-beam main keels, starting from the waterproof concrete sill, install ALC panels layer by layer upwards until the bottom elevation of the beam. When installing the ALC panels, first slide the ALC panels diagonally between the adjacent main keels, then rotate and adjust them to a position parallel to the designed wall surface. The two sides of the ALC panels overlap with the flange plates of the I-beam main keels on both sides. The ALC panels include a bottom panel, an intermediate panel, and a top panel. The bottom panel has a mortise at the top, the top panel has a tenon at the bottom, and the intermediate panel has a mortise at the top and a tenon at the bottom. During installation, the tenons of adjacent panels are inserted into the mortise. Step 5: Install angle steel fasteners at the joints between adjacent ALC boards, and weld the angle steel fasteners to the I-beam main keel for fixation; Step Six: Seal the gap between the top slab and the bottom of the top beam with expanding foam. Step 7: Apply inorganic fiber spraying to the inner side of the wall assembled from ALC panels to form an insulation layer. The insulation layer and the inner side of the I-beam steel column form a plane. Step 8: Install a decorative layer on the surface of the insulation layer. The decorative layer includes square steel pipes arranged in a longitudinal and transverse manner and cement fiberboard fixed to the outside of the square steel pipes.

2. The construction method for the curved inclined wall of a large stadium according to claim 1, characterized in that: The two adjacent I-beam main keels are arranged with a spacing of ≤1000mm.

3. The construction method for the curved inclined wall of a large stadium according to claim 2, characterized in that: The web height of the I-beam main keel is ≥ twice the thickness of the ALC plate.

4. The construction method for the curved inclined wall of a large stadium according to claim 1, characterized in that: When the height of the wall exceeds 4000mm, an I-beam steel wainscoting is added in the middle of the wall height.

5. The construction method for the curved inclined wall of a large stadium according to claim 4, characterized in that: The specifications of the I-beam wainscoting are the same as those of the I-beam main keel.

6. The construction method for the curved inclined wall of a large stadium according to claim 1, characterized in that: When the wall has windows, adjust the spacing of the I-beam main keel and the module of the ALC plate according to the size of the wall between the windows.

7. The construction method for the curved inclined wall of a large stadium according to claim 1, characterized in that: The angle steel fastener is welded to the web of the I-beam main keel.

8. The construction method for the curved inclined wall of a large stadium according to claim 1, characterized in that: The longitudinal arrangement of the square steel pipes corresponds to the main keel of the I-beam, and the transverse spacing is 600mm.

9. The construction method for the curved inclined wall of a large stadium according to claim 1, characterized in that: The cement fiberboard is fixed to the square steel pipe with self-tapping screws.

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