A construction method for an exterior decorative wall with an ultra-large cavity

Abstract

This application relates to a construction method for an exterior decorative wall with a large cavity, comprising the following steps: S1, constructing multiple reinforced concrete cantilever slabs arranged vertically on the side of the main building; S2, constructing vertical joists between adjacent reinforced concrete cantilever slabs, with the bottom of the vertical joists connected to the reinforced concrete cantilever slabs and the top of the vertical joists connected to the main building via longitudinal cantilever rods; S3, installing vertical tie bars, arranging multiple vertical tie bars horizontally; S4, installing shale bricks sequentially from bottom to top, ensuring that each shale brick is penetrated by a vertical tie bar; S5, installing horizontal angle steel after every N shale bricks installed vertically; the horizontal angle steel includes a first leg and a second leg perpendicular to each other, the first leg connecting to the vertical joist, and the second leg having multiple through holes through which each vertical tie bar passes. This invention can improve the safety, seismic resistance, and installation accuracy of the exterior decorative wall.

Description

Technical Field

[0001] This application relates to the field of exterior decorative wall construction technology, and in particular to a construction method for an ultra-large cavity exterior decorative wall. Background Technology

[0002] A sandwich wall refers to a wall structure where a continuous cavity is pre-formed within the wall and filled with thermal insulation material. The inner and outer lobes of the wall are connected by rust-resistant metal tie-fitters. Typically, the thickness of the sandwich layer between the inner and outer lobes does not exceed 120mm. In some special venues (such as museums and libraries), for visual artistic purposes, the outer lobes are used as decorative walls, requiring the formation of a large cavity with a thickness exceeding 120mm (e.g., 370mm-720mm) between the inner and outer lobes. This structural form far exceeds the requirements of design specifications and drawings. If metal tie-fitters are continued to connect the inner and outer lobes, structural safety and seismic resistance requirements cannot be met. Therefore, improvements to the construction of the decorative wall are necessary. Summary of the Invention

[0003] Therefore, it is necessary to provide a construction method for an external decorative wall with an ultra-large cavity, and the specific technical solution is as follows.

[0004] A construction method for an exterior decorative wall with an ultra-large cavity includes the following steps:

[0005] S1. Construct multiple reinforced concrete cantilever slabs arranged vertically on the side of the main building.

[0006] S2. Construct vertical joists between adjacent reinforced concrete cantilever slabs, connecting the bottom of the vertical joists to the reinforced concrete cantilever slabs, and connecting the top of the vertical joists to the main building structure through longitudinal cantilever rods.

[0007] S3. Install vertical tie bars so that multiple vertical tie bars are arranged in the horizontal direction;

[0008] S4. Install shale bricks from bottom to top, ensuring that each shale brick is connected by vertical tie bars.

[0009] S5. After installing N shale bricks in the vertical direction, install horizontal angle steel; the horizontal angle steel includes a first limb and a second limb that are perpendicular to each other. The first limb is connected to the vertical keel, and the second limb is provided with multiple through holes so that each vertical tie bar passes through the through holes on the second limb.

[0010] Furthermore, it also includes a tie bar positioning assembly, which includes a horizontal positioning rod, a locking device, a rebar clamping plate, and a limiting plate. The horizontal positioning rod is connected to the vertical keel through the locking device. When the locking device is locked, the horizontal positioning rod is fixed to the vertical keel. When the locking device is unlocked, the horizontal positioning rod slides relative to the vertical keel. One end of the rebar clamping plate is hinged to the horizontal positioning rod through a torsion spring hinge, and the other end is provided with a semi-circular groove that abuts against the vertical tie bar. The torsion spring hinge has a torque that causes the rebar clamping plate to rotate in a horizontal state. The limiting plate is connected to the horizontal positioning rod and is used to prevent the rebar clamping plate from continuing to rotate upward after reaching a horizontal state.

[0011] When installing shale bricks, use tie bar positioning components to position the vertical tie bars:

[0012] Install at least two tie bar positioning components above the horizontal angle steel to be installed;

[0013] Place the shale brick downwards from the end of the vertical tie bar. During the placement process, the shale brick presses down on the steel bar clamp. After the shale brick passes, the steel bar clamp springs back to a horizontal state and presses against the vertical tie bar again.

[0014] After installing N shale bricks vertically, move the tie bar positioning assembly upwards, and then install the horizontal angle steel.

[0015] Furthermore, the steel bar clamps correspond one-to-one with the vertical tie bars.

[0016] Furthermore, the tie bar positioning assembly also includes a movable clip; the movable clip includes a top plate, and a partially bent plate is connected to the side of the top plate, so that a part of the side of the top plate forms a slot and the other part forms a non-slotted part; the rebar clamping plate includes a first plate and a second plate, the first plate is hinged to the transverse positioning rod by a torsion spring hinge, and the second plate is connected to the first plate and extends toward the semi-circular slot; the movable clip is movably connected to the limiting plate, when the movable clip moves to the slot and aligns with the second plate, the second plate is engaged in the slot to lock the limiting plate and the rebar clamping plate, when the movable clip moves to the slot and aligns with the first plate, the second plate disengages from the slot to unlock the limiting plate and the rebar clamping plate.

[0017] Furthermore, the second plate includes a body, a fastener, and a first spring; the side of the body is provided with a blind hole, the fastener is movably connected in the blind hole, and the first spring is connected between the body and the fastener and has an elastic force that drives the body to move away from the fastener; the end of the fastener away from the body forms a first transition slope, and the side of the bent plate away from the plate forms a second transition slope; the first transition slope and the second transition slope cooperate, and during the process of the steel bar plate flipping towards a horizontal state, the bent plate squeezes the fastener, causing the fastener to gradually move into the blind hole.

[0018] Furthermore, the top plate of the movable card is provided with a third transition slope at one end facing the vertical tie bar, and the other side is connected to the horizontal positioning rod through a second spring; the second spring has an elastic force that causes the movable card to move toward the vertical tie bar; when the shale brick is placed downward, the shale brick presses against the third transition slope, causing the movable card to move toward the horizontal positioning rod.

[0019] Furthermore, the locking device includes connecting rods, wedge pins, and clamping rods arranged opposite to each other on both sides of the vertical keel; one end of the connecting rod is connected to the transverse positioning rod, and the other end is provided with a pin hole; the clamping rod is placed above the two connecting rods; the wedge pin is inserted into the insertion hole and abuts against the clamping rod, so that the clamping rod abuts against the vertical keel.

[0020] Furthermore, during the construction of the reinforced concrete cantilever slab, the extension length of the reinforced concrete cantilever slab is determined according to the design position of the vertical tie bars, so that the end face of the reinforced concrete cantilever slab abuts against the vertical tie bars; after the shale bricks are constructed, the end face of the reinforced concrete cantilever slab is filled with filler and the vertical tie bars are pressed tightly.

[0021] Beneficial effects: The construction method of the ultra-large cavity exterior decorative wall provided by this invention uses reinforced concrete cantilever slabs and longitudinal cantilever rods to fix the vertical keel, and uses horizontal angle steel as the horizontal keel and sleeves vertical tie bars to fix the vertical tie bars. Each decorative shale brick is effectively tied by the vertical tie bars, ensuring the installation accuracy of the vertical tie bars and shale bricks, forming a stable force system, improving the overall safety and seismic resistance of the structure, and effectively avoiding the phenomenon of decorative shale brick masonry falling off and overturning during subsequent use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A flowchart of the construction method;

[0024] Figure 2 This is a side view of the exterior decorative wall and the main structure.

[0025] Figure 3 This is a schematic diagram illustrating the positioning of vertical tie bars using a tie bar positioning assembly.

[0026] Figure 4 A schematic diagram of the tie bar positioning assembly;

[0027] Figure 5 This is an exploded view of the movable card and the reinforcing bar plate.

[0028] Explanation of reference numerals in the attached drawings: 1. Main building structure; 2. Reinforced concrete cantilever slab; 3. Vertical joists; 4. Longitudinal cantilever rods; 5. Vertical tie bars; 6. Shale bricks; 7. Horizontal angle steel; 8. Tie bar positioning components; 9. Filler components;

[0029] 11. First embedded part; 12. Second embedded part;

[0030] 81. Lateral positioning rod; 82. Locking device; 83. Rebar clamp; 84. Limiting plate; 85. Torsion spring hinge; 86. Movable latch; 87. Second spring;

[0031] 821. Connecting rod; 822. Wedge pin; 823. Clamping rod;

[0032] 831. First plate; 832. Second plate; 833. Main body; 834. Fastener; 835. First transition slope;

[0033] 861. Top plate; 862. Bending plate; 863. Slotted part; 864. Non-slotted part; 865. Second transition slope; 866. Third transition slope. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms "first" and "second" 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" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Example

[0041] Reference Figure 1 As shown in the figure, this embodiment provides a construction method for an exterior decorative wall with an ultra-large cavity, which includes the following steps:

[0042] S1. Construct multiple reinforced concrete cantilever slabs 2 arranged vertically on the side of the main building 1;

[0043] S2. Construct vertical keel 3 between adjacent reinforced concrete cantilever slabs 2, so that the bottom of the vertical keel 3 is connected to the reinforced concrete cantilever slab 2, and the top of the vertical keel 3 is connected to the main building 1 through longitudinal cantilever rod 4.

[0044] S3. Install vertical tie bars 5 so that multiple vertical tie bars 5 are arranged in the horizontal direction;

[0045] S4. Install shale bricks 6 from bottom to top, so that each shale brick 6 is penetrated by vertical tie bars 5;

[0046] S5. After installing N shale bricks 6 in the vertical direction, install horizontal angle steel 7; the horizontal angle steel 7 includes a first limb and a second limb that are perpendicular to each other. The first limb is connected to the vertical keel 3, and the second limb is provided with multiple through holes so that each vertical tie bar 5 passes through the through holes on the second limb respectively.

[0047] This embodiment provides a construction method for an ultra-large cavity exterior decorative wall. It utilizes a reinforced concrete cantilever slab 2 and longitudinal cantilever rods 4 to fix the vertical keel 3, and uses transverse angle steel 7 as the transverse keel, connecting it to vertical tie bars 5 for fixation. Each decorative shale brick 6 is effectively tied together by the vertical tie bars 5, ensuring the installation accuracy of the vertical tie bars 5 and the shale brick 6, forming a stable force-bearing system, improving the overall structural safety and seismic resistance, and effectively preventing the decorative shale brick 6 masonry from falling off and overturning during subsequent use.

[0048] Specifically, refer to Figure 2 As shown, the reinforced concrete cantilever slab 2 can be set according to the floor height, and a first embedded part 11 is pre-embedded in the reinforced concrete cantilever slab 2, and a second embedded part 12 is pre-embedded in the main building 1, so that the bottom of the vertical keel 3 is connected to the first embedded part 11, and the reinforced concrete cantilever slab 2 is connected to the second embedded part 12.

[0049] Specifically, in this embodiment, the thickness of the extra-large cavity between the exterior decorative wall and the main building 1 reaches 370mm-720mm.

[0050] Specifically, refer to Figure 3 As shown, during the installation of each shale brick 6, the tie bar positioning assembly 8 is used to position the vertical reinforcing bars, thereby achieving precise positioning of the shale brick 6 during installation. (Refer to...) Figure 4As shown, the tie bar positioning assembly 8 includes a horizontal positioning rod 81, a locking device 82, a rebar clamping plate 83, and a limiting plate 84. The horizontal positioning rod 81 is connected to the vertical keel 3 via the locking device 82. When the locking device 82 is locked, the horizontal positioning rod 81 is fixed to the vertical keel 3. When the locking device 82 is unlocked, the horizontal positioning rod 81 slides relative to the vertical keel 3. One end of the rebar clamping plate 83 is hinged to the horizontal positioning rod 81 via a torsion spring hinge 85, and the other end is provided with a semi-circular groove that abuts against the vertical tie bar 5. The torsion spring hinge 85 has a torque that causes the rebar clamping plate 83 to rotate in a horizontal state. The limiting plate 84 is connected to the horizontal positioning rod 81 and is used to prevent the rebar clamping plate 83 from continuing to rotate upward after reaching a horizontal state.

[0051] When laying shale bricks 6, horizontal angle steel 7 is installed after every 8 shale bricks 6, thus enabling segmented installation. Specifically, in each segment of shale brick 6 installation, the vertical keel 3 is used as a reference, and the installed horizontal angle steel 7 and the tie bar positioning component 8 located above the horizontal angle steel 7 are used to position the vertical tie bar 5, preventing the corresponding vertical tie bar 5 in that segment from shifting, thereby ensuring the installation accuracy of the shale bricks 6.

[0052] The process of positioning the vertical tie bar 5 using the tie bar positioning component 8 when installing shale brick 6 includes:

[0053] Install at least two tie bar positioning components 8 above the horizontal angle steel 7 to be installed;

[0054] Shale brick 6 is placed downward from the end of vertical tie bar 5. During the placement process, shale brick 6 presses down on steel bar clamp 83, causing steel bar clamp 83 to reverse downward. After shale brick 6 passes, steel bar clamp 83 springs back to a horizontal state and presses against vertical tie bar 5 again.

[0055] After installing 8 shale bricks 6 vertically, the tie bar positioning assembly 8 is moved upward, and then the horizontal angle steel 7 is installed, thereby installing the next segment of shale bricks 6.

[0056] Specifically, the steel bar clamp 83 corresponds one-to-one with the vertical tie bar 5.

[0057] Specifically, refer to Figure 5As shown, the tie bar positioning assembly 8 further includes a movable clip 86; the movable clip 86 includes a top plate 861, and a partially bent plate 862 is connected to the side of the top plate 861, so that a portion of the side of the top plate 861 forms a slot 863 and another portion forms a non-slotted portion 864; the rebar clamping plate 83 includes a first plate 831 and a second plate 832, the first plate 831 is hinged to the transverse positioning rod 81 by a torsion spring hinge 85, and the second plate 832... The movable card 86 is connected to the first plate 831 and extends toward the semi-circular slot; the movable card 86 is movably connected to the limiting plate 84. When the movable card 86 moves to the slot 863 and aligns with the second plate 832, the second plate 832 is engaged in the slot 863 to lock the limiting plate 84 and the rebar clamping plate 83. When the movable card 86 moves to the slot 863 and aligns with the first plate 831, the second plate 832 is disengaged from the slot 863 to unlock the limiting plate 84 and the rebar clamping plate 83.

[0058] Reference Figure 5 As shown, the second plate 832 includes a body 833, a fastener 834, and a first spring. A blind hole is provided on the side of the body 833, and the fastener 834 is movably connected within the blind hole. The first spring connects the body 833 and the fastener 834 and has an elastic force that drives the body 833 to move away from the fastener 834. A first transition slope 835 is formed at the end of the fastener 834 away from the body 833, and a second transition slope 865 is formed on the side of the bent plate 862 away from the plate. The first transition slope 835 and the second transition slope 865 cooperate, and during the process of the steel bar plate 83 flipping towards a horizontal state, the bent plate 862 presses against the fastener 834, causing the fastener 834 to gradually move into the blind hole.

[0059] Continue to refer to Figure 5 As shown, the top plate 861 of the movable card 86 has a third transition slope 866 at one end facing the vertical tie bar 5, and the other side is connected to the horizontal positioning rod 81 through a second spring 87; the second spring 87 has an elastic force that causes the movable card 86 to move toward the vertical tie bar 5; when the shale brick 6 is placed downward, the shale brick 6 presses the third transition slope 866 to make the movable card 86 move toward the horizontal positioning rod 81.

[0060] When stacking shale bricks 6, the shale bricks 6 are moved downwards after being passed through by the vertical tie bars 5. When the shale bricks 6 reach contact with the third transition slope 866, the movable clip 86 automatically moves away from the vertical tie bars 5 under the guidance of the third transition slope 866, compressing the second spring 87. This causes the slot 863 to disengage from the second plate 832, unlocking the steel bar clip 83 from the movable clip 86. This allows the shale bricks 6 to continue moving downwards, causing the steel bar clip 83 to reverse downwards, allowing the shale bricks 6 to pass through the tie bar positioning assembly 8. No other operations are required from construction personnel, making it simple and convenient. After the shale brick 6 passes through, the movable clip 86 moves towards the vertical tie bar 5 due to the elastic force of the second spring 87, while the rebar clamp 83 rotates to a horizontal state under the action of the torsion spring hinge 85. During the rotation of the torsion spring hinge 85, the fastener 834 is compressed under the cooperation of the first transition slope 835 and the second transition slope 865 until the fastener 834 is engaged in the slot 863 and then extends into the slot 863 under the action of the first spring, so that the movable clip 86 is locked with the rebar clamp 83, and the rebar clamp 83 keeps pressing against the vertical tie bar 5, continuously positioning the vertical tie bar 5. During the process of stacking shale bricks 6, the construction personnel use the rebar clamp 83 as a reference to keep the vertical tie bar 5 in a state of keeping it pressed against the rebar clamp 83.

[0061] Specifically, continue to refer to Figure 4 As shown, the locking device 82 includes connecting rods 821, wedge-shaped pins 822, and clamping rods 823 arranged opposite to each other on both sides of the vertical keel 3. One end of the connecting rod 821 is connected to the transverse positioning rod 81, and the other end is provided with a pin hole. The clamping rod 823 is placed above the two connecting rods 821. The wedge-shaped pins 822 are inserted into the insertion holes and press against the clamping rod 823, so that the clamping rod 823 presses against the vertical keel 3. After removing the wedge-shaped pins 822, the tie rod positioning assembly 8 can be moved to facilitate adjustment of the position of the tie rod positioning assembly 8.

[0062] Specifically, refer to Figure 2 As shown, during the construction of the reinforced concrete cantilever slab 2, the extension length of the reinforced concrete cantilever slab 2 is determined according to the design position of the vertical tie bar 5, so that the end face of the reinforced concrete cantilever slab 2 abuts against the vertical tie bar 5. After the shale bricks 6 are constructed, the end face of the reinforced concrete cantilever slab 2 is filled with filler 9 and the vertical tie bar 5 is pressed tightly. The filler 9 can be made of shale bricks 6 of suitable size to improve the integrity of the exterior decorative wall, or it can be made of stone strips to improve the aesthetics of the exterior decorative wall. During construction, steel bars are pre-embedded in the end face of the reinforced concrete cantilever slab 2, and non-penetrating installation holes are opened in the end face of the filler 9 so that the pre-embedded steel bars are inserted into the installation holes and reinforced with cement mortar.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A construction method for an exterior decorative wall with an ultra-large cavity, characterized in that, Includes the following steps: S1. Construct multiple reinforced concrete cantilever slabs arranged vertically on the side of the main building. S2. Construct vertical joists between adjacent reinforced concrete cantilever slabs, connecting the bottom of the vertical joists to the reinforced concrete cantilever slabs, and connecting the top of the vertical joists to the main building structure through longitudinal cantilever rods. S3. Install vertical tie bars so that multiple vertical tie bars are arranged in the horizontal direction; S4. Install shale bricks from bottom to top, ensuring that each shale brick is connected by vertical tie bars. S5. After installing N shale bricks in the vertical direction, install horizontal angle steel; the horizontal angle steel includes a first leg and a second leg that are perpendicular to each other. The first leg is connected to the vertical keel, and the second leg is provided with multiple through holes so that each vertical tie bar passes through the through holes on the second leg respectively. It also includes a tie bar positioning assembly, which comprises a horizontal positioning rod, a locking device, a rebar clamping plate, and a limiting plate. The horizontal positioning rod is connected to the vertical keel via the locking device. When the locking device is locked, the horizontal positioning rod is fixed to the vertical keel. When the locking device is unlocked, the horizontal positioning rod slides relative to the vertical keel. One end of the rebar clamping plate is hinged to the horizontal positioning rod via a torsion spring hinge, and the other end is provided with a semi-circular groove for pressing against the vertical tie bar. The torsion spring hinge has a torque that causes the rebar clamping plate to rotate in a horizontal state. The limiting plate is connected to the horizontal positioning rod and is used to prevent the rebar clamping plate from continuing to rotate upward after reaching a horizontal state. When installing shale bricks, use tie bar positioning components to position the vertical tie bars: Install at least two tie bar positioning components above the horizontal angle steel to be installed; Place the shale brick downwards from the end of the vertical tie bar. During the placement process, the shale brick presses down on the steel bar clamp. After the shale brick passes, the steel bar clamp springs back to a horizontal state and presses against the vertical tie bar again. After installing N shale bricks vertically, move the tie bar positioning assembly upwards, and then install the horizontal angle steel.

2. The construction method for an exterior decorative wall with an ultra-large cavity according to claim 1, characterized in that, The steel reinforcement plates correspond one-to-one with the vertical tie bars.

3. The construction method for an ultra-large cavity exterior decorative wall according to claim 2, characterized in that, The tie bar positioning assembly also includes a movable clip; the movable clip includes a top plate, and a partially bent plate is connected to the side of the top plate, so that a part of the side of the top plate forms a slot and the other part forms a non-slotted part; the rebar clamping plate includes a first plate and a second plate, the first plate is hinged to the transverse positioning rod by a torsion spring hinge, and the second plate is connected to the first plate and extends toward the semi-circular slot; the movable clip is movably connected to the limiting plate, when the movable clip moves to the slot and aligns with the second plate, the second plate is engaged in the slot to lock the limiting plate and the rebar clamping plate, when the movable clip moves to the slot and aligns with the first plate, the second plate disengages from the slot to unlock the limiting plate and the rebar clamping plate.

4. The construction method for an external decorative wall with an ultra-large cavity according to claim 3, characterized in that, The second plate includes a body, a fastener, and a first spring; the side of the body is provided with a blind hole, the fastener is movably connected in the blind hole, and the first spring is connected between the body and the fastener and has an elastic force that drives the body to move away from the fastener; the end of the fastener away from the body forms a first transition slope, and the side of the bent plate away from the plate forms a second transition slope; the first transition slope and the second transition slope cooperate, and during the process of the steel bar clamp plate flipping towards a horizontal state, the bent plate squeezes the fastener, causing the fastener to gradually move into the blind hole.

5. The construction method for an ultra-large cavity exterior decorative wall according to claim 4, characterized in that, The top plate of the movable card has a third transition slope at one end facing the vertical tie bar, and the other side is connected to the horizontal positioning rod through a second spring; the second spring has an elastic force that causes the movable card to move toward the vertical tie bar; when the shale brick is placed downward, the shale brick presses against the third transition slope, causing the movable card to move toward the horizontal positioning rod.

6. The construction method for an exterior decorative wall with an ultra-large cavity according to claim 1, characterized in that, The locking device includes connecting rods, wedge pins, and clamping rods arranged opposite each other on both sides of the vertical keel; one end of the connecting rod is connected to the horizontal positioning rod, and the other end is provided with a pin hole; the clamping rod is placed above the two connecting rods; the wedge pin is inserted into the insertion hole and abuts against the clamping rod, so that the clamping rod abuts against the vertical keel.

7. The construction method for an ultra-large cavity exterior decorative wall according to claim 1, characterized in that, When constructing a reinforced concrete cantilever slab, the extension length of the reinforced concrete cantilever slab is determined according to the design position of the vertical tie bars, so that the end face of the reinforced concrete cantilever slab abuts against the vertical tie bars; after the shale bricks are constructed, the end face of the reinforced concrete cantilever slab is filled with filler and the vertical tie bars are pressed tightly.

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