UHPC (Ultra High Performance Concrete) membrane shell shear wall template

Abstract

The invention relates to the technical field of shear walls, and discloses a UHPC membrane shell shear wall formwork which comprises a first wallboard body, a second wallboard body is arranged on the right side of the first wallboard body, and joint crack prevention mechanisms are arranged in the first wallboard body and the second wallboard body correspondingly. Wall body anti-cracking mechanisms are arranged in the first wall plate body and the second wall plate body, each joint anti-cracking mechanism comprises a wave-shaped occlusion block, and the opposite sides of the first wall plate body and the second wall plate body are provided with the wave-shaped occlusion blocks. According to the method, through the joint design of waveform occlusion stress dispersion and fiber continuous tension transmission and the three-dimensional fiber reinforced plate design, the two core problems that a traditional UHPC permanent formwork is prone to cracking and slurry leakage at the joint and the anti-cracking performance of the plate is limited are solved from the three dimensions of the stress transmission path, the tensile system continuity and crack extension control; and the overall performance improvement from connection construction to material compounding is realized.

Description

Technical Field

[0001] This invention relates to the field of shear wall technology, specifically to a UHPC membrane shell shear wall template. Background Technology

[0002] Shear walls are key vertical components in building structures used to resist horizontal loads (such as wind loads and seismic forces). Their core function is to transfer horizontal forces to the foundation through their own stiffness and strength, thereby ensuring the overall stability and safety of the building.

[0003] Ultra-high performance concrete (UHPC) is widely used as a permanent formwork in construction engineering due to its excellent mechanical properties and durability.

[0004] However, existing UHPC membrane shell formwork faces two major technical challenges in practical applications: First, the joints between adjacent membrane shell panels often use planar rigid connections or simple overlapping structures, resulting in a small contact area. During concrete pouring, stress concentration can easily lead to cracking and grout leakage, affecting the structure's sealing and durability. Second, UHPC panels often use a single fiber reinforcement mode, which makes cracks prone to irregular expansion. In particular, the right-angle design at the edges and corners further exacerbates stress concentration, causing potential structural safety hazards. Existing patents often rely on traditional tie bolts for through-fixation, single-layer fiber reinforcement, or single sealing structures to address the above problems. However, rigid connections can easily lead to increased stress concentration at the joints during use. Single-fiber reinforcement has limited crack resistance. Traditional tie bolts damage the integrity of the sheet material and cannot be recycled. Sealing structures cannot meet both buffering and rigid sealing requirements. Therefore, a UHPC membrane shell shear wall template is proposed to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a UHPC membrane shell shear wall formwork that offers superior performance and solves two core problems of existing UHPC membrane shell permanent formwork: joint cracking and grout leakage, and irregular expansion of cracks in the panels. Technical solution

[0006] The present invention provides the following technical solution: a UHPC membrane shell shear wall template, including a first wall panel body, a second wall panel body is provided on the right side of the first wall panel body, and a joint anti-crack mechanism is provided inside the first wall panel body and the second wall panel body, and a wall anti-crack mechanism is provided inside the first wall panel body and the second wall panel body. The joint crack prevention mechanism includes a corrugated interlocking block, an interlocking groove, a buffer pad, a plug, a slot, a through hole, an expansion screw, a positioning hole, and a prestressed clamping assembly. Corrugated interlocking blocks are provided on opposite sides of the first wall panel body and the second wall panel body. Interlocking grooves are provided inside the first wall panel body and the second wall panel body. Buffer pads are installed inside the interlocking grooves. A plug is fixedly installed on the right side of the first wall panel body. A slot is provided inside the second wall panel body. A through hole is provided inside the plug. An expansion screw is provided on the top of the second wall panel body. Positioning holes are provided on both the front and rear sides of the corrugated interlocking block. A prestressed clamping assembly is provided on the outside of the first wall panel body and the second wall panel body.

[0007] Preferably, the prestressed clamping assembly includes a first clamping plate, a horizontal plate, an extension plate, a slider, a sliding opening, a second clamping plate, an adjusting screw, a locking screw hole, and a tensioning screw. The first clamping plate is provided on the front side of the first wall panel body, and the horizontal plate is connected to the rear side of the first clamping plate. The extension plate is movably installed inside the horizontal plate, and sliders are fixedly installed on both the left and right sides of the extension plate. Two sliding openings are provided inside the horizontal plate. The second clamping plate is installed on the rear side of the extension plate, and an adjusting screw is provided on the top of the extension plate. The locking screw hole is provided inside the extension plate, and a tensioning screw is provided on the front side of the first clamping plate.

[0008] Preferably, the wave-shaped engagement block and the engagement groove are mutually related, and the insertion rod is disposed inside the slot on the side away from the first wall panel body.

[0009] Preferably, the bottom of the expansion screw extends into the interior of the second wall panel body and is threadedly connected to the insertion rod. The first clamping plate and the second clamping plate are both located at the joint between the first wall panel body and the second wall panel body, and the first clamping plate and the second clamping plate are respectively located on the front and rear sides of the first wall panel body.

[0010] Preferably, the opposite sides of the two sliders extend into the interior of the two sliding openings, and the tensioning screw passes through the positioning hole and is threadedly connected to the wave-shaped engagement block.

[0011] Preferably, the wall crack prevention mechanism includes carbon fiber mesh, carbon fiber net, chopped steel fiber felt and basalt fiber net. The interior of the first wall panel body and the second wall panel body are both provided with carbon fiber mesh. The carbon fiber net is provided on the rear side of the carbon fiber mesh, the carbon fiber net chopped steel fiber felt is provided on the rear side of the carbon fiber net, and the carbon fiber net basalt fiber net is provided on the rear side of the chopped steel fiber felt.

[0012] Preferably, the carbon fiber mesh, chopped steel fiber felt, and basalt fiber mesh are bonded to the inner wall of the first wall panel body and the second wall panel body using a silane coupling agent KH-550.

[0013] Preferably, the wave height of the wave-shaped interlocking block is 15mm and the wavelength is 50mm. The carbon fiber mesh fabric has three layers with a spacing of 8mm between each layer and an exposed length of 100mm. The exposed carbon fiber mesh fabrics of the first wall panel body and the second wall panel body are interlocked.

[0014] Preferably, the buffer pad is a polytetrafluoroethylene modified nitrile rubber strip with a thickness of 8mm; the interlocking groove is filled with fast-hardening UHPC sealant; the warp tensile strength of the carbon fiber mesh is ≥3500MPa; the weft tensile strength of the basalt fiber mesh is ≥2800MPa; and the fiber length of the chopped steel fiber felt is 12mm.

[0015] Preferably, the compressive strength of the fast-hardening UHPC sealant is ≥120MPa, and it is filled by high-pressure grouting. The carbon fiber mesh, carbon fiber net, chopped steel fiber felt and basalt fiber net are on the same horizontal line. There are two sets of carbon fiber mesh, and the two sets of carbon fiber mesh are located on the front and rear sides of the corrugated interlocking block, respectively.

[0016] Beneficial effects: Compared with the prior art, the present invention provides a UHPC membrane shell shear wall formwork, which has the following beneficial effects: This UHPC membrane shear wall formwork, through its wave-like interlocking stress dispersion and fiber-continuous tensile force transmission joint design, as well as its three-dimensional fiber-reinforced panel design, solves two core problems of traditional UHPC permanent formwork: easy cracking and grout leakage at joints and limited crack resistance of the panels themselves. It achieves an overall performance improvement from connection structure to material composite. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional schematic diagram of the present invention; Figure 2 This is a partial three-dimensional schematic diagram of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the local joint crack prevention mechanism of the present invention; Figure 6 This is a side view of the prestressed clamping assembly of the present invention; Figure 7 This is a three-dimensional schematic diagram of the prestressed clamping assembly of the present invention; Figure 8 This is a cross-sectional schematic diagram of the prestressed clamping assembly of the present invention; Figure 9 This is a schematic diagram of the wall crack prevention mechanism of the present invention.

[0018] In the diagram: 1 First wall panel body, 2 Second wall panel body, 3 Joint crack prevention mechanism, 301 Wave-shaped interlocking block, 302 Interlocking groove, 303 Buffer pad, 304 Insert rod, 305 Slot, 306 Through hole, 307 Expansion screw, 308 Positioning hole, 309 Prestressed clamping assembly, 3091 First clamping plate, 3092 Horizontal plate, 3093 Extension plate, 3094 Slider, 3095 Sliding mouth, 3096 Second clamping plate, 3097 Adjusting screw, 3098 Locking screw hole, 3099 Tensioning screw, 4 Wall crack prevention mechanism, 401 Carbon fiber mesh, 402 Carbon fiber mesh, 403 Chopped steel fiber felt, 404 Basalt fiber mesh. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-9 A UHPC membrane shell shear wall template includes a first wall panel body 1, a second wall panel body 2 is provided on the right side of the first wall panel body 1, a joint anti-crack mechanism 3 is provided inside the first wall panel body 1 and the second wall panel body 2, and a wall anti-crack mechanism 4 is provided inside the first wall panel body 1 and the second wall panel body 2. The joint crack prevention mechanism 3 includes a corrugated interlocking block 301, an interlocking groove 302, a buffer pad 303, an insert rod 304, a slot 305, a through hole 306, an expansion screw 307, a positioning hole 308, and a prestressed clamping assembly 309. Corrugated interlocking blocks 301 are provided on opposite sides of the first wall panel body 1 and the second wall panel body 2. Interlocking grooves 302 are provided inside the first wall panel body 1 and the second wall panel body 2. Buffer pads 303 are installed inside the interlocking grooves 302. An insert rod 304 is fixedly installed on the right side of the first wall panel body 1. A slot 305 is provided inside the second wall panel body 2. A through hole 306 is provided inside the insert rod 304. An expansion screw 307 is provided on the top of the second wall panel body 2. Positioning holes 308 are provided on both the front and rear sides of the corrugated interlocking block 301. A prestressed clamping assembly 309 is provided on the outside of the first wall panel body 1 and the second wall panel body 2.

[0021] exist Figure 1 and Figure 2 In the first wall panel body 1, the prestressed clamping assembly 309 includes a first clamping plate 3091, a horizontal plate 3092, an extension plate 3093, a slider 3094, a sliding opening 3095, a second clamping plate 3096, an adjusting screw 3097, a locking screw hole 3098, and a tensioning screw 3099. The first clamping plate 3091 is provided on the front side of the first wall panel body 1, and the horizontal plate 3092 is connected to the rear side of the first clamping plate 3091. The horizontal plate 3092 is movably installed inside the horizontal plate 3092. The extension plate 3093 has sliders 3094 fixedly installed on both its left and right sides. The horizontal plate 3092 has two sliding openings 3095 inside. The second clamping plate 3096 is installed on the rear side of the extension plate 3093. The top of the extension plate 3093 is provided with an adjusting screw 3097. The extension plate 3093 has a locking screw hole 3098 inside. The front side of the first clamping plate 3091 is provided with a tensioning screw 3099.

[0022] exist Figure 1 and Figure 3 In the middle, the wave-shaped engagement block 301 and the engagement groove 302 are mutually engaged, and the insertion rod 304 is disposed in the slot 305 on the side away from the first wall panel body 1.

[0023] Specifically, by setting the corrugated interlocking block 301 and the interlocking groove 302, the traditional flat straight seam is changed to a corrugated interlocking with a wave height of 15mm and a wavelength of 50mm. This corrugated interlocking design significantly increases the contact area and interlocking length between the two plates, forming a physical locking effect. This not only greatly improves the shear and bending resistance of the joint, but also effectively disperses and transfers shear stress, fundamentally inhibiting the initiation and propagation of cracks caused by stress concentration at the joint. exist Figure 2 and Figure 3 In the middle, the bottom of the expansion screw 307 extends into the interior of the second wall panel body 2 and is threadedly connected to the insertion rod 304. The first clamping plate 3091 and the second clamping plate 3092 are both located at the joint between the first wall panel body 1 and the second wall panel body 2, and the first clamping plate 3091 and the second clamping plate 3092 are respectively located on the front and rear sides of the first wall panel body 1.

[0024] exist Figure 2 and Figure 4 In the middle, the opposite sides of the two sliders 3094 extend into the interior of the two sliding openings 3095 respectively, and the tensioning screw 3099 passes through the positioning hole 308 and is threadedly connected to the wave engagement block 301.

[0025] Specifically, by setting up a prestressed clamping assembly 309, which is the core of applying active, adjustable and controllable prestress to the joint, the first clamping plate 3091 and the second clamping plate 3096 are located on the front and rear sides of the joint, respectively. By adjusting the screw 3097, the extension plate 3093 is moved within the horizontal plate 3092 to adapt to different plate thicknesses and clamp them.

[0026] Preferably, the wall crack prevention mechanism 4 includes carbon fiber mesh 401, carbon fiber net 402, chopped steel fiber felt 403 and basalt fiber net 404. The interior of the first wall panel body 1 and the second wall panel body 2 is provided with carbon fiber mesh 401. The carbon fiber net 402 is provided on the rear side of the carbon fiber mesh 401. The carbon fiber net chopped steel fiber felt 403 is provided on the rear side of the carbon fiber net 402. The carbon fiber net basalt fiber net 404 is provided on the rear side of the chopped steel fiber felt 403.

[0027] exist Figure 3 and Figure 5 In the process, carbon fiber mesh 402, chopped steel fiber felt 403 and basalt fiber mesh 404 are bonded to the inner walls of the first wall panel body 1 and the second wall panel body 2 through silane coupling agent KH-550.

[0028] exist Figure 5 and Figure 6 In the middle, the wave height of the wave-shaped interlocking block 301 is 15mm and the wavelength is 50mm. There are three layers of carbon fiber mesh cloth 401, with a spacing of 8mm between each layer and an exposed length of 100mm. The exposed carbon fiber mesh cloth 401 of the first wall panel body 1 and the second wall panel body 2 are interlocked.

[0029] exist Figure 5 and Figure 7 In the middle, the buffer pad 302 is a polytetrafluoroethylene modified nitrile rubber strip with a thickness of 8mm; the interlocking groove 302 is filled with fast-hardening UHPC sealant; the warp tensile strength of the carbon fiber mesh 402 is ≥3500MPa; the weft tensile strength of the basalt fiber mesh 404 is ≥2800MPa; and the fiber length of the chopped steel fiber felt 403 is 12mm.

[0030] exist Figure 8 and Figure 9 In the process, the compressive strength of the fast-hardening UHPC sealant is ≥120MPa. It is filled by high-pressure grouting. The carbon fiber mesh 401, carbon fiber mesh 402, chopped steel fiber felt 403 and basalt fiber mesh 404 are on the same horizontal line. There are two sets of carbon fiber mesh 401, which are located on the front and rear sides of the corrugated interlocking block 301 respectively.

[0031] Specifically, the carbon fiber mesh 401 is anchored within the panel, consisting of three layers with an 8mm spacing between each layer. It is built into the template, providing structural reinforcement for the template itself. The exposed mesh 100mm is used for reinforcement. After adjacent templates are assembled, the exposed mesh 401 of the first wall panel body 1 and the second wall panel body 2 overlap each other. This design directly connects the tensile reinforcement of the two adjacent panels, forming a continuous fiber-reinforced skeleton that spans the joint. This achieves fiber integration of the joint at the material level, perfectly complementing the mechanical connection of the corrugated joint and preventing the joint from becoming a structural weakness.

[0032] When using this patent, follow these steps: Step 1: In the factory, the first wall panel body 1 and the second wall panel body 2 are prefabricated using a mold forming process. The composite wall anti-crack mechanism 4 is pre-embedded and installed. The corrugated interlocking block 301 is prefabricated on the side of the panel, and the interlocking groove 302 is cut, etc. Step 2: Transport the first wall panel body 1 and the second wall panel body 2 to the site and place them in place. Use the insertion rod 304 to accurately align and insert it into the slot 305 of the adjacent panel. At this time, the wave-shaped interlocking block 301 is simultaneously inserted into the interlocking groove 302 to achieve preliminary horizontal alignment and connection. Install the expansion screw 306 and tighten it vertically through the second wall panel body 2 into the through hole of the insertion rod 304 to complete the preliminary fastening and vertical fixation of the two panels. Step 3: Install the prestressed clamping assembly 309 at the joint. By rotating the adjusting screw 3097, drive the extension plate 3093 and the second clamping plate 3096 to move, so that the first clamping plate 3091 and the second clamping plate 3096 tightly clamp the template on both sides of the joint. Install and tighten the tensioning screw 3099 so that it passes through the positioning hole 308 on the corrugated interlocking block 301. Apply the pre-tightening force required by the design to the interlocking area of ​​the two plates. Through the reserved grouting hole, inject fast-hardening UHPC sealant into the cavity formed by the corrugated interlocking using high-pressure grouting. After completing all the assembly and connection of the entire template system according to the design requirements, pour the internal cast-in-place concrete.

[0033] In summary, this UHPC membrane shear wall formwork, by setting corrugated interlocking blocks 301 and interlocking grooves 302, transforms the traditional flat direct seam into a corrugated interlocking design with a wave height of 15mm and a wavelength of 50mm. This corrugated interlocking design significantly increases the contact area and interlocking length between the two panels, creating a physical locking effect. This not only greatly improves the shear and bending resistance of the joint but also effectively disperses and transfers shear stress, fundamentally inhibiting the initiation and propagation of cracks caused by stress concentration at the joint. It significantly improves the load-bearing capacity and overall integrity of the joint. The buffer pad 303, made of 8mm thick polytetrafluoroethylene modified nitrile rubber strip, is placed within the interlocking groove 302. Its main function is to provide flexible pre-compression during the initial assembly of the UHPC panels, absorbing manufacturing tolerances and safety factors. The minor impacts during installation ensure a tight fit between the corrugated meshing surfaces. Its elastic properties partially buffer minor deformations during subsequent construction or use, preventing localized crushing caused by hard contact and aiding in initial sealing, laying the foundation for subsequent rigid sealing. A plug-in locking mechanism is formed by setting up a plug rod 304, a slot 305, and an expansion screw 307. The plug rod 304 is inserted into the slot 305, and the expansion screw 307 is screwed into the plug rod 304 from top to bottom through the second wall panel body 2. The through hole 306 prevents the plug rod 304 from breaking due to stress concentration. This structure achieves rapid and precise lateral positioning and vertical fastening, ensuring the two panels are aligned in the horizontal plane without relative displacement. The expansion screw provides strong tension, firmly fixing the two panels, providing the first mechanical guarantee for forming a stable joint.

[0034] Furthermore, by setting up a prestressed clamping assembly 309, which is the core of applying active, adjustable and controllable prestress to the joint, the first clamping plate 3091 and the second clamping plate 3096 are located on the front and rear sides of the joint, respectively. By adjusting the screw 3097, the extension plate 3093 moves within the horizontal plate 3092 to adapt to different plate thicknesses and clamp. The tensioning screw 3099 passes through the positioning hole 308 on the corrugated interlocking block 301 and directly applies tensioning prestress perpendicular to the plate surface along the joint direction to the interlocking area. The actively introduced pressure can significantly offset the tensile stress generated by self-shrinkage, temperature rise and external loads during the UHPC casting process, so that the joint area is in a state of compression or slight tension under working conditions, actively controlling cracking and greatly enhancing the sealing and crack resistance of the joint.

[0035] In addition, by setting up the wall crack prevention mechanism 4, this mechanism aims to improve the mechanical properties and crack resistance of the UHPC membrane shell template itself, ensuring its high durability as part of a permanent structure. The composite fiber reinforcement layer, with the top layer of carbon fiber mesh 402 providing ultra-high tensile strength and the first crack control barrier, mainly resists early shrinkage stress and micro-crack propagation. The middle layer of chopped steel fiber felt 403 forms a three-dimensional randomly distributed micro-reinforcement network, playing an excellent crack bridging role, effectively inhibiting, dispersing and delaying the generation and penetration development of macro-cracks, and significantly improving the ductility and toughness of the material. Absorbing energy, the bottom layer of basalt fiber mesh 404 utilizes its high elastic modulus, alkali resistance, and excellent impact resistance to provide robust mechanical support and durability at the bottom layer, resisting environmental erosion and long-term loads. The silane coupling agent KH-550, a chemical modifier, acts as an interface treatment agent, which greatly enhances the chemical bonding and physical adhesion between the UHPC matrix and each fiber layer. This allows the high-strength fibers to fully exert their reinforcing effect, achieving efficient stress transfer from the UHPC matrix to the fibers, avoiding interface delamination, and ensuring the synergistic work and final strength of the composite material.

[0036] Carbon fiber mesh 401 is anchored within the panel, consisting of three layers with an 8mm spacing between each layer. It is built into the template to provide structural reinforcement for the template itself. The exposed mesh is 100mm. After adjacent templates are assembled, the exposed mesh 401 of the first wall panel body 1 and the second wall panel body 2 overlap each other. This design directly connects the tensile reinforcement of the two adjacent panels, forming a continuous fiber-reinforced skeleton that spans the joint. It achieves fiber integration of the joint at the material level, perfectly complements the mechanical connection of the corrugated joint, and prevents the joint from becoming a structural weakness.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A UHPC membrane shell shear wall formwork, comprising a first wall panel body (1), characterized in that: A second wall panel body (2) is provided on the right side of the first wall panel body (1). Both the first wall panel body (1) and the second wall panel body (2) are provided with a joint crack prevention mechanism (3). Both the first wall panel body (1) and the second wall panel body (2) are provided with a wall crack prevention mechanism (4). The joint crack prevention mechanism (3) includes a corrugated interlocking block (301), an interlocking groove (302), a buffer pad (303), a plug (304), a slot (305), a through hole (306), an expansion screw (307), a positioning hole (308), and a prestressed clamping assembly (309). Corrugated interlocking blocks (301) are provided on opposite sides of both the first wall panel body (1) and the second wall panel body (2). Interlocking grooves (302) are provided inside both the first wall panel body (1) and the second wall panel body (2). The first wall panel body (1) is equipped with a buffer pad (303), and a plug rod (304) is fixedly installed on the right side of the first wall panel body (1). The second wall panel body (2) has a slot (305) inside, and a through hole (306) is opened inside the plug rod (304). An expansion screw (307) is provided on the top of the second wall panel body (2). Positioning holes (308) are opened on both the front and rear sides of the wave-shaped interlocking block (301). A prestressed clamping assembly (309) is provided on the outside of the first wall panel body (1) and the second wall panel body (2).

2. The UHPC membrane shell shear wall formwork according to claim 1, characterized in that: The prestressed clamping assembly (309) includes a first clamping plate (3091), a horizontal plate (3092), an extension plate (3093), a slider (3094), a sliding opening (3095), a second clamping plate (3096), an adjusting screw (3097), a locking screw hole (3098), and a tensioning screw (3099). The first clamping plate (3091) is provided on the front side of the first wall panel body (1), and the horizontal plate (3092) is connected to the rear side of the first clamping plate (3091). An extension plate is movably installed inside the horizontal plate (3092). The extension plate (3093) has sliders (3094) fixedly installed on both the left and right sides. The horizontal plate (3092) has two sliding openings (3095) inside. The extension plate (3093) has a second clamping plate (3096) installed on the rear side. The extension plate (3093) has an adjusting screw (3097) on the top. The extension plate (3093) has a locking screw hole (3098) inside. The first clamping plate (3091) has a tensioning screw (3099) on the front side.

3. The UHPC membrane shell shear wall formwork according to claim 1, characterized in that: The wave-shaped engagement block (301) and the engagement groove (302) are mutually related, and the insertion rod (304) is disposed on the side away from the first wall panel body (1) inside the slot (305).

4. The UHPC membrane shell shear wall formwork according to claim 2, characterized in that: The bottom of the expansion screw (307) extends into the interior of the second wall panel body (2) and is threadedly connected to the insertion rod (304). The first clamping plate (3091) and the second clamping plate (3092) are both located at the joint between the first wall panel body (1) and the second wall panel body (2), and the first clamping plate (3091) and the second clamping plate (3092) are respectively located on the front and rear sides of the first wall panel body (1).

5. A UHPC membrane shell shear wall formwork according to claim 2, characterized in that: The opposite sides of the two sliders (3094) extend into the interior of the two sliding openings (3095), and the tensioning screw (3099) passes through the positioning hole (308) and is threadedly connected to the wave engagement block (301).

6. The UHPC membrane shell shear wall formwork according to claim 1, characterized in that: The wall crack prevention mechanism (4) includes carbon fiber mesh (401), carbon fiber mesh (402), chopped steel fiber felt (403) and basalt fiber mesh (404). The interior of the first wall panel body (1) and the second wall panel body (2) is provided with carbon fiber mesh (401). The carbon fiber mesh (402) is provided on the rear side of the carbon fiber mesh (401). The carbon fiber mesh (403) is provided on the rear side of the carbon fiber mesh (402). The carbon fiber mesh (404) is provided on the rear side of the chopped steel fiber felt (403).

7. A UHPC membrane shell shear wall formwork according to claim 6, characterized in that: The carbon fiber mesh (402), chopped steel fiber felt (403) and basalt fiber mesh (404) are bonded to the inner walls of the first wall panel body (1) and the second wall panel body (2) by means of silane coupling agent KH-550.

8. A UHPC membrane shell shear wall formwork according to claim 6, characterized in that: The wave height of the waveform interlocking block (301) is 15mm and the wavelength is 50mm. The carbon fiber mesh cloth (401) has three layers with a spacing of 8mm between each layer and an exposed length of 100mm. The exposed carbon fiber mesh cloth (401) of the first wall panel body (1) and the second wall panel body (2) overlap each other.

9. A UHPC membrane shell shear wall formwork according to claim 6, characterized in that: The buffer pad (302) is a polytetrafluoroethylene modified nitrile rubber strip with a thickness of 8mm; the interlocking groove (302) is filled with fast-hardening UHPC sealant; the warp tensile strength of the carbon fiber mesh (402) is ≥3500MPa; the weft tensile strength of the basalt fiber mesh (404) is ≥2800MPa; and the fiber length of the chopped steel fiber felt (403) is 12mm.

10. A UHPC membrane shell shear wall formwork according to claim 9, characterized in that: The compressive strength of the fast-hardening UHPC sealant is ≥120MPa. It is filled by high-pressure grouting. The carbon fiber mesh (401), carbon fiber mesh (402), chopped steel fiber felt (403) and basalt fiber mesh (404) are on the same horizontal line. There are two sets of carbon fiber mesh (401). The two sets of carbon fiber mesh (401) are located on the front and rear sides of the corrugated interlocking block (301) respectively.

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