Precast concrete trough plate externally-hung wallboard

Abstract

The invention provides a prefabricated concrete trough plate externally-hung wall plate. The prefabricated concrete trough plate externally-hung wall plate comprises a heat preservation material, a prefabricated concrete trough plate, a keel connecting piece and a sleeve connecting piece. An embedding groove for embedding the thermal insulation material in a matching manner is formed in the prefabricated concrete groove-shaped plate; a plurality of keel connecting pieces are pre-buried in the prefabricated concrete trough plate, and the decorative panel is mounted on the prefabricated concrete trough plate through a keel system; a plurality of sleeve connecting pieces are pre-buried in the precast concrete trough plate, and the precast concrete trough plate externally-hung wall plate is fixedly connected with the main body structure through the sleeve connecting pieces and the pre-buried connecting pieces; rabbets are formed in the tops and the bottoms of the prefabricated concrete trough plates, so that the two prefabricated concrete trough plate externally-hung wall plates are vertically spliced through the rabbets which are high inside and low outside, and the multiple prefabricated concrete trough plate externally-hung wall plates are upwards spliced to a parapet wall from the bottom layer of the main body structure. The invention relates to the technical field of prefabricated buildings, and can solve the problem that a prefabricated wallboard in the prior art is difficult to realize light weight, modularization and reconfiguration at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of assembled buildings, and in particular to a prefabricated concrete grooved plate external wall panel. Background Art

[0002] Traditional precast concrete exterior walls include the following types:

[0003] Fully prefabricated wall: Fully prefabricated wall is a prefabricated wall with full thickness. This practice usually reserves cast-in-place sections for connection, so the cast-in-place sections of the prefabricated components need to be plastered and external scaffolding needs to be set up for construction. External decoration and external insulation can be reversed on the prefabricated components in the factory to achieve decoration and insulation integration. The full prefabricated wall is generally 200mm thick and weighs 3 to 5 tons. The full prefabricated wall needs to be split according to the layout of the building and structure, and the degree of standardization is poor.

[0004] Prefabricated sandwich insulation exterior wall formwork: The outer leaf wall panel is used as the outer formwork on the outside, and the sandwich insulation layer is prefabricated in the middle together with the outer leaf wall panel, and stainless steel connectors or FRP (Fiber Reinforced Polymer / Plastics, i.e. fiber reinforced composite materials) connectors are reserved to be cast together with the cast-in-place concrete of the inner leaf panel to form a whole. This wall structure has good thermal insulation performance and can effectively reduce building energy consumption. This approach solves the problem of external insulation falling off and cracking. Prefabricated sandwich insulation walls can reduce the plastering of the exterior wall, but cannot reduce the plastering of the inside of the prefabricated sandwich insulation exterior wall. For exterior decoration, the decoration can be integrated by counter-punching on the prefabricated components in the factory, but it is impossible to prefabricate the interior decoration and the exterior enclosure in an integrated manner. The thickness of the prefabricated part of the prefabricated sandwich insulation exterior wall formwork is generally more than 130mm, and the total thickness of the wall is generally more than 330mm after adding the cast-in-place section. The prefabricated sandwich insulation exterior wall formwork needs to be split according to the appearance of the building, and the degree of standardization is poor.

[0005] Prefabricated sandwich insulation wall: Based on the prefabricated sandwich insulation exterior wall formwork, the inner leaf plate is also prefabricated together with the outer side. In this way, plastering can be saved on the wall. However, this method still has some inner leaf walls that are not cast in place, and additional plastering is required there, and the inner wall needs to be decorated with an additional surface layer. For exterior decoration, the decoration can be integrated by counter-pressing on the prefabricated components in the factory, but it is impossible to prefabricate the interior decoration and the exterior enclosure as a whole. The thickness of the prefabricated sandwich insulation wall is generally more than 250mm, and the prefabricated sandwich insulation exterior wall formwork needs to be split according to the appearance of the building, and the degree of standardization is poor.

[0006] Double-sided composite wall: Double-sided composite wall is a prefabricated building structure system, which consists of two prefabricated concrete slabs (panels) and a cast-in-place concrete layer in the middle. This wall structure combines the high efficiency of prefabricated concrete with the flexibility and structural performance of on-site concrete. It consists of a double-sided prefabricated panel and a cast-in-place layer in the middle. The double-sided prefabricated panel is usually made of reinforced concrete. The two panels are prefabricated in the factory, with a flat surface and reserved steel bars to connect with the cast-in-place concrete layer in the middle. The cast-in-place layer in the middle is a concrete layer cast on site between the two prefabricated panels, forming the core part of the wall. After the prefabricated panels are transported to the construction site, they are installed to the designated location by hoisting equipment. The connection between the panels is usually achieved by embedded connectors or protruding steel bars. After the installation is completed, concrete is poured between the two prefabricated panels to form a complete wall structure. The double-sided composite wall can achieve the prefabricated positions on the inner and outer sides without plastering, but because of the cast-in-place strip, some positions still need to be plastered. External decoration can be integrated by reverse punching on prefabricated components in the factory, but it is impossible to prefabricate the interior decoration and the external enclosure in an integrated manner. The prefabricated thickness of the double-sided composite wall is generally 120mm, and the total thickness of the wall after adding the cavity is more than 200mm.

[0007] Standardized board: Standardized board is a board with uniform size, shape and performance produced according to certain national standards, industry standards or enterprise standards. Take autoclaved aerated concrete board as an example. It is made of siliceous materials and calcium materials as the main raw materials, mixed with gas-generating agents and other regulating materials, and equipped with steel mesh cages or steel meshes treated with rust prevention. It is a porous lightweight silicate prefabricated board made through processes such as batching, pouring, gasification, static stopping, cutting, autoclaving and curing. It is referred to as AAC board. This wall panel has the characteristics of light weight, heat preservation, heat insulation, fire prevention and sound absorption. It is widely used in the interior and exterior wall partitions, thermal insulation layers and other parts of the building. It is composed of autoclaved aerated concrete exterior wall panels, exterior facings, connection nodes and related supporting materials, placed outside the main structure of the building, and is a non-load-bearing enclosure system integrating decoration, heat preservation, fire prevention, sound insulation and waterproofing. It is referred to as AAC exterior wall panel system. After adopting the autoclaved aerated concrete board system, the interior and exterior decoration still needs to be installed after the autoclaved aerated concrete board is installed. Because it is a finished board, it can achieve thin plastering on the surface (some high-quality finished products can be free of plastering), but it is impossible to achieve the integration of decoration, insulation and finished boards. The thickness of the standardized board used for external protection is generally 200mm to 250mm. It is difficult to achieve the purpose of reusability of this wall panel.

[0008] In summary, the common disadvantages of existing prefabricated exterior walls are that they are thick, heavy, poorly standardized and versatile, and it is difficult for prefabricated wall panels to simultaneously achieve lightweight, modular, and reconfigurable, and it is difficult to give full play to the advantages of factory production of prefabricated components. Therefore, it is necessary to provide a prefabricated concrete trough-shaped plate exterior wall panel that can solve the problem that it is difficult for prefabricated wall panels in the prior art to simultaneously achieve lightweight, modular, and reconfigurable. Summary of the invention

[0009] The object of the present invention is to provide a prefabricated concrete trough plate external wall panel, which can solve the problem that it is difficult for prefabricated wall panels in the prior art to achieve lightweight, modularization and reconfigurability at the same time.

[0010] In order to achieve the above object, the technical solution of the present invention is:

[0011] A precast concrete trough plate external wall panel comprises: a thermal insulation material, a precast concrete trough plate, a keel connector and a sleeve connector; one or more embedding grooves matching the thermal insulation material are formed on the inner wall of the precast concrete trough plate; a plurality of keel connectors are pre-embedded in the inner wall of the precast concrete trough plate, so that a decorative panel is installed on the inner wall of the precast concrete trough plate through a keel system; a plurality of sleeve connectors are pre-embedded in the precast concrete trough plate, so that the precast concrete trough plate external wall panel is fixedly connected to a main structure through the sleeve connector and the pre-embedded connector; matching tongues and grooves are formed on the top and bottom of the precast concrete trough plate, so that two precast concrete trough plate external wall panels are vertically spliced ​​through the tongues and grooves with the inner side higher and the outer side lower, and a plurality of precast concrete trough plate external wall panels are spliced ​​upward from the bottom layer of the main structure to the parapet.

[0012] The prefabricated concrete trough-shaped plate is formed with a window hole; a pre-buried window frame or a pre-buried auxiliary frame is embedded in the window hole.

[0013] At the connection node between the precast concrete trough plate external wall panel and the bottom layer of the main structure, a resting point is arranged on the outside of the beam of the bottom layer of the main structure, and a concave portion matching the tongue and groove is formed on the outside of the top surface of the resting point, so that a horizontal wall seam is formed between the bottom of the precast concrete trough plate external wall panel and the resting point; the sleeve connecting piece includes a connecting embedded bolt sleeve embedded in the bottom of the precast concrete trough plate, so that the precast concrete trough plate external wall panel is connected to the beam of the bottom layer of the main structure through the connecting embedded bolt sleeve and the embedded connecting piece.

[0014] At the connection node between the precast concrete trough plate external wall panel and the main structure layer, the tongue-and-groove top surface of the precast concrete trough plate external wall panel located on the next layer is flush with the top surface of the beam between the main structure layers, and the precast concrete trough plate external wall panel located on the previous layer is spliced ​​on the top of the precast concrete trough plate external wall panel located on the next layer through the tongue-and-groove, and a horizontal wall seam is formed between the two adjacent layers of precast concrete trough plate external wall panels; the sleeve connecting piece includes a connecting embedded bolt sleeve pre-embedded in the bottom and top of the precast concrete trough plate, so that the precast concrete trough plate external wall panel located on the previous layer is connected to the top surface of the beam between the main structure layers through the connecting embedded bolt sleeve at the bottom via the embedded connecting piece, and the precast concrete trough plate external wall panel located on the next layer is connected to the bottom surface of the beam between the main structure layers through the connecting embedded bolt sleeve at the top via the embedded connecting piece.

[0015] At the connection node between the precast concrete trough plate external wall panel and the parapet of the main structure, the tongue and groove at the top of the precast concrete trough plate external wall panel is higher than the top surface of the parapet, and a cover plate is installed between the tongue and groove at the top of the precast concrete trough plate external wall panel and the top surface of the parapet; the sleeve connecting piece includes a connecting embedded bolt sleeve embedded in the top of the precast concrete trough plate, so that the precast concrete trough plate external wall panel is connected to the parapet through the connecting embedded bolt sleeve and the embedded connecting piece.

[0016] At the connection node between the precast concrete trough panel external wall panel and the decorative panel of the main structure, the keel system includes an interior decoration horizontal keel and an interior decoration vertical keel, and a plurality of interior decoration horizontal keels arranged horizontally are connected with a plurality of interior decoration vertical keels arranged vertically to form a keel system; the decorative panel is installed on the indoor side of the keel system, and the outdoor side of the keel system is connected to the keel connector embedded in the precast concrete trough panel through the indoor decoration horizontal keel.

[0017] The precast concrete trough-shaped plates are provided with vertical wall grooves at both side edges, and the vertical wall grooves are arranged throughout the length of the precast concrete trough-shaped plates; when two precast concrete trough-shaped plates are horizontally spliced, the vertical wall grooves of the two precast concrete trough-shaped plates are spliced ​​to form a vertical drainage cavity; and a vertical wall seam is formed between the two horizontally spliced ​​precast concrete trough-shaped plates.

[0018] The vertical seam of the wall is connected with the horizontal seam of the wall through a drainage cavity to form a drainage channel, and a sealed drainage structure is embedded in the vertical seam of the wall and the horizontal seam of the wall; the sealed drainage structure includes waterproof sealant, polyethylene rods, water stop strips, fireproof plugging and a drainage pipe; the polyethylene rods are filled between the outdoor end of the construction joint and the drainage channel, and the waterproof sealant is sealed and filled between the outer side of the polyethylene rod and the outdoor end of the construction joint; the water stop strips are filled between the indoor end of the construction joint and the drainage channel, and the fireproof plugging is sealed and filled between the inner side of the water stop strip and the indoor end of the construction joint; one end of the drainage pipe is connected with the drainage channel, and the other end of the drainage pipe passes through the precast concrete trough plate external wall panel and extends obliquely downward to the outdoors.

[0019] The embedded connector comprises an angle steel connector and an embedded part. The embedded part is embedded in the main structure. One end face of the angle steel connector is fixedly connected to the embedded part, and the other end face of the angle steel connector is fixedly connected to the embedded bolt sleeve.

[0020] The sleeve connector also includes lifting embedded bolt sleeves, which are arranged in pairs and symmetrically embedded in the top of the precast concrete trough plate; the sleeve connector also includes diagonal brace embedded bolt sleeves, and a diagonal brace is installed between the diagonal brace embedded bolt sleeves and the main structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention uses concrete thin-walled trough panels in building exterior walls, greatly reduces the deadweight of the panels while maintaining the mechanical properties of the precast concrete trough panels for external wall panels, and utilizes the concave embedding grooves on the precast concrete trough panels to fill with thermal insulation materials, thereby improving the thermal performance of the precast concrete trough panels for external wall panels. The precast concrete trough panels for external wall panels are lightweight, and the weight of each panel designed to be transportable by commonly used transport vehicles can be controlled within 1.5 tons.

[0023] 2. The present invention can design the external dimensions of the wall panels according to the engineering design using a module matching the column grid, taking into account both the individualization of the engineering project and the standardization requirements of the building industrialization, and implementing the principle of "few specifications, more combinations".

[0024] 3. The present invention reserves a window hole in the center of the precast concrete groove-shaped external wall panel, and limits the maximum size of various window holes to the width of a single precast concrete groove-shaped external wall panel, and keeps the periphery of the window hole in a closed shape. When larger-sized external wall windows are required in actual projects, multiple external wall panels with windows can also be used for unit combination, which has higher application flexibility.

[0025] 4. The present invention adopts an assembled decoration engineering method on the indoor side of the precast concrete trough-shaped external wall panels, and uses a keel system to install decorative panels. The decorative panels and the precast concrete trough-shaped external wall panels together form a sandwich insulation exterior wall structure, which ensures the thermal insulation performance of the wall and the aesthetics of the interior decoration.

[0026] 5. The prefabricated concrete trough-shaped external wall panels of the present invention can achieve the goal of "reconfigurability" through standardized external dimensions and standardized node structures, and the assembled decoration of the decorative panels on the indoor side can also achieve the goal of "reconfigurability".

[0027] 6. The present invention embeds the pre-buried window frame or pre-buried sub-frame in the opening of the exterior wall panel during prefabrication, thereby raising the window opening of the prefabricated concrete groove-shaped external wall panel on the exterior wall. This not only facilitates the subsequent installation of the window glass, avoids the need for post-installation of the sub-frame or window frame on site, but also ensures the surrounding waterproof and anti-seepage performance after the window glass is installed.

[0028] 7. The exterior facing of the precast concrete trough-shaped external wall panel of the present invention can adopt the counter-hitting technology of integrally formed decorative concrete or facing blocks (such as facing bricks, stones, etc.), so as to realize the integration of the precast wall and the decorative panel, avoid on-site wet plastering work, eliminate the need to set up scaffolding, reduce the amount of work, and help ensure the construction progress.

[0029] 8. The construction joint structure of the precast concrete trough-shaped external wall panels of the present invention adopts a sealed drainage structure, which ensures double waterproof performance through structural waterproofing and material waterproofing, and ensures efficient discharge of seepage water through the reservation of drainage channels, which can ensure the waterproof and anti-seepage performance of the entire wall.

[0030] 9. The prefabricated concrete trough-shaped external wall panels of the present invention can be used in reinforced concrete frame structures, steel structure buildings, and local locations of shear wall structures, and have good versatility and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0032] Figure 1 It is a front view of the precast concrete trough-shaped plate external wall panel of the present invention (without window openings);

[0033] Figure 2 It is a side cross-sectional view of the precast concrete channel-shaped plate external wall panel of the present invention (without window openings);

[0034] Figure 3 It is an outer side axial view of the precast concrete trough-shaped plate external wall panel of the present invention (without window openings);

[0035] Figure 4 It is an inner axial side view of the precast concrete trough-shaped plate external wall panel of the present invention (without window openings);

[0036] Figure 5 It is a front view of the precast concrete trough-shaped plate external wall panel of the present invention (with window openings);

[0037] Figure 6 It is a side cross-sectional view of the precast concrete trough-shaped plate external wall panel of the present invention (with window opening);

[0038] Figure 7 It is an outer side axial view of the precast concrete trough-shaped plate external wall panel of the present invention (with window opening);

[0039] Figure 8 It is an inner axial side view of the precast concrete trough-shaped plate external wall panel of the present invention (with window opening);

[0040] Fig. 9 It is a schematic diagram of the bottom connection node of the precast concrete trough-shaped plate external wall panel of the present invention;

[0041] Fig.10 It is a schematic diagram of the interlayer connection nodes of the precast concrete trough-shaped plate external wall panel of the present invention;

[0042] Fig.11 It is a schematic diagram of the parapet connection node of the precast concrete trough-shaped plate external wall panel of the present invention;

[0043] Fig.12 It is a schematic diagram of the connection nodes of the precast concrete trough-shaped plate external wall panel and the interior decorative panel of the present invention;

[0044] Fig.13 It is a schematic diagram of the interlayer connection nodes of the precast concrete trough-shaped plate exterior wall panel and the interior decorative panel of the present invention;

[0045] Fig.14 It is a schematic diagram of the vertical joint node of the precast concrete trough-shaped plate external wall panel of the present invention;

[0046] Fig.15 It is a schematic diagram of the vertical screen joint node of the precast concrete trough-shaped plate external wall panel of the present invention.

[0047] In the figure, 1-precast concrete trough plate external wall panel, 2-sleeve connector, 3-parapet, 4-cover plate, 5-angle steel connector, 6-embedded parts, 7-beam, 8-waterproof sealant, 9-polyethylene rod, 10-waterstop strip, 11-fireproof blocking, 12-horizontal wall seam, 13-tongue and groove, 14-ceiling, 15-floor finish, 16-interior decoration horizontal keel, 17-interior decoration vertical keel, 18-decorative panel, 19-wall vertical notch, 20-drainage cavity, 21-drainage pipe, 22-keel connector, 23-lifting embedded bolt sleeve, 24-connecting embedded bolt sleeve, 25-insulation material, 26-precast concrete trough plate, 27-window hole, 28-embedded window frame or embedded sub-frame, 29-resting point, 30-diagonal brace embedded bolt sleeve. DETAILED DESCRIPTION

[0048] The following is a further detailed description of a prefabricated concrete trough plate external wall panel proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0049] Please see attached Figure 1 To Attachment Figure 4 A precast concrete trough plate external wall panel 1 comprises a heat preservation material 25, a precast concrete trough plate 26, a keel connector 22 and a sleeve connector 2; the inner wall of the precast concrete trough plate 26 (the side of the precast concrete trough plate 26 facing the interior is the inner wall, and the side of the precast concrete trough plate 26 facing the exterior is the outer wall) is concavely formed with one or more embedding grooves matching the heat preservation material 25; the inner wall of the precast concrete trough plate 26 is pre-embedded with a plurality of keel connectors 22, so that the decorative panel 18 passes through the keel body It is installed on the inner wall of the precast concrete trough plate 26; a plurality of sleeve connectors 2 are embedded in the precast concrete trough plate 26, so that the precast concrete trough plate external wall panel 1 is fixedly connected to the main structure through the sleeve connector 2 via the embedded connector; the top and bottom of the precast concrete trough plate 26 are formed with matching tongues and grooves 13, so that two precast concrete trough plate external wall panels 1 are vertically spliced ​​through the tongue and groove 13 with the inner side higher and the outer side lower, and a plurality of precast concrete trough plate external wall panels 1 are spliced ​​upward from the bottom layer of the main structure to the parapet 3.

[0050] Preferably, the precast concrete trough plate 26 is a concrete thin-walled trough plate. When the precast concrete trough plate 26 is precast, the thermal insulation material 25 is directly embedded in the precast concrete trough plate 26 to form an integral body, thereby ensuring the structural strength and thermal insulation performance of the precast concrete trough plate external wall panel 1, and can be produced in a standardized and modular manner, thereby improving the flexibility and versatility of the use of the precast concrete trough plate external wall panel 1. The precast concrete trough plate external wall panel 1 is vertically spliced ​​with a tongue and groove 13, thereby ensuring the vertical splicing flatness of the precast concrete trough plate external wall panel 1 and the reliability of the splicing nodes, and the construction is simple and quick.

[0051] Preferably, the keel connector 22 can adopt a groove-type keel connector, which can be adaptively selected according to actual connection requirements, so as to be convenient for connection and fixation with the outer side of the keel system, thereby installing the decorative panel 18 to the inner side of the keel system, completing the installation of the decorative panel 18 on the inner side of the precast concrete grooved plate external wall panel 1, and the installation process is simple.

[0052] Preferably, the sleeve connector 2 includes a sleeve embedded in the precast concrete trough plate 26 and a bolt screwed into the sleeve, and the bolt and the sleeve facilitate the quick and reliable connection of the precast concrete trough plate 26 with the main structure, and also facilitate the connection with the wire rope of the lifting equipment during lifting. The number and embedded position of the sleeve connector 2 can be adaptively set according to actual use requirements.

[0053] Please see attached Figure 5 To Attachment Figure 8 The precast concrete trough plate 26 is provided with a window hole 27. For a wall that requires a hole, a window hole 27 of a corresponding size can be reserved at a corresponding position according to the actual hole requirement when the precast concrete trough plate 26 is precast.

[0054] Please see attached Figure 6 The window hole 27 is embedded with a pre-embedded window frame or a pre-embedded sub-frame 28; when the window hole 27 is embedded with a pre-embedded window frame, the window glass is embedded in the pre-embedded window frame; when the window hole 27 is embedded with a pre-embedded sub-frame, the window glass is embedded in the pre-embedded sub-frame through the window frame.

[0055] The pre-embedded window frame or pre-embedded sub-frame 28 facilitates the installation of the window glass at a later time, and the pre-embedded window frame or pre-embedded sub-frame can be adaptively selected according to the installation process and construction requirements of the window glass at a later time.

[0056] When the precast concrete trough-shaped plate external wall panel 1 is spliced ​​from the bottom layer of the main structure upward to the parapet 3, connection nodes exist between the precast concrete trough-shaped plate external wall panel 1 and the beams 7 at the bottom layer of the main structure, the beams 7 between the main structure layers, the parapet 3, and the indoor decorative panels 18.

[0057] Please see attached Fig. 9At the connection node between the precast concrete trough plate external wall panel 1 and the bottom layer of the main structure, a resting point 29 is arranged on the outside of the beam 7 of the bottom layer of the main structure, and a concave portion matching the tongue and groove 13 is formed on the outside of the top surface of the resting point 29, so that a horizontal wall seam 12 is formed between the bottom of the precast concrete trough plate external wall panel 1 and the resting point 29; the sleeve connector 2 includes a connecting embedded bolt sleeve 24 embedded in the bottom of the precast concrete trough plate 26, so that the precast concrete trough plate external wall panel 1 is connected to the beam 7 of the bottom layer of the main structure through the connecting embedded bolt sleeve 24 and the embedded connector.

[0058] The precast concrete trough-shaped plate external wall panel 1 located at the bottom of the main structure is the bottom wall panel, so a resting point 29 needs to be set to provide an installation support for the bottom wall panel and bear the weight of the entire wall. During installation, the precast concrete trough-shaped plate external wall panel 1 is quickly and reliably connected to the beam 7 at the bottom of the main structure by connecting the embedded bolt sleeve 24 and the embedded connector.

[0059] Please see attached Fig.10 At the connection node between the precast concrete trough plate external wall panel 1 and the main structure layer, the top surface of the tongue and groove 13 of the precast concrete trough plate external wall panel 1 located in the next layer is flush with the top surface of the beam 7 between the main structure layers, and the precast concrete trough plate external wall panel 1 located in the upper layer is spliced ​​on the top of the precast concrete trough plate external wall panel 1 located in the lower layer through the tongue and groove 13, and a horizontal wall seam 12 is formed between the two adjacent layers of precast concrete trough plate external wall panels 1; the sleeve connector 2 includes a connecting embedded bolt sleeve 24 pre-embedded at the bottom and top of the precast concrete trough plate 26, so that the precast concrete trough plate external wall panel 1 located in the upper layer is connected to the top surface of the beam 7 between the main structure layers through the connecting embedded bolt sleeve 24 at the bottom through the embedded connector, and the precast concrete trough plate external wall panel 1 located in the next layer is connected to the bottom surface of the beam 7 between the main structure layers through the connecting embedded bolt sleeve 24 at the top through the embedded connector.

[0060] Preferably, the height of the precast concrete trough plate external wall panel 1 matches the floor height. After the precast concrete trough plate external wall panel 1 is installed, the top surface of its tongue and groove 13 is flush with the top surface of the beam 7 between the layers of the main structure, and the vertical splicing node of the precast concrete trough plate external wall panel 1 is located between the layers of the main structure.

[0061] During installation, a quick and reliable connection between the bottom of the upper layer of precast concrete trough plate external wall panel 1 and the top surface of beam 7 is achieved by connecting the embedded bolt sleeve 24 and the embedded connecting piece on the top surface of beam 7; a quick and reliable connection between the top of the next layer of precast concrete trough plate external wall panel 1 and the bottom surface of beam 7 is achieved by connecting the embedded bolt sleeve 24 and the embedded connecting piece on the bottom surface of beam 7. The embedded bolt sleeve 24 and the bottom surface of beam 7 can also be connected by means of embedded bolt sleeves or the like.

[0062] Please see attached Fig.11 At the connection node between the precast concrete trough plate external wall panel 1 and the parapet 3 of the main structure, the tongue and groove 13 at the top of the precast concrete trough plate external wall panel 1 is higher than the top surface of the parapet 3, and a cover plate 4 is installed between the tongue and groove 13 at the top of the precast concrete trough plate external wall panel 1 and the top surface of the parapet 3; the sleeve connector 2 includes a connecting embedded bolt sleeve 24 embedded in the top of the precast concrete trough plate 26, so that the precast concrete trough plate external wall panel 1 is connected to the parapet 3 through the embedded bolt sleeve 24 via the embedded connector.

[0063] Preferably, the cover plate 4 can be made of an aluminum alloy cover plate. The cover plate 4 can play a decorative role and waterproof the gap between the outer wall and the parapet 3. A cover plate of suitable material and size can be selected for installation according to actual construction requirements.

[0064] The precast concrete trough plate external wall panel 1 at the connection node of the parapet 3 is the topmost wall panel. The bottom of the precast concrete trough plate external wall panel 1 is connected to the top surface of the beam 7 of the top layer. The connection method is the same as the connection method between the precast concrete trough plate external wall panel 1 and the beam 7 of the upper layer at the connection node between the main structure layers, which will not be repeated here. The top of the precast concrete trough plate external wall panel 1 is connected and fixed to the embedded connection piece embedded in the parapet 3 by connecting the embedded bolt sleeve 24, so as to realize the quick and reliable connection between the precast concrete trough plate external wall panel 1 and the parapet 3.

[0065] Please see attached Fig.12 and attached Fig.13 At the connection node between the precast concrete trough panel external wall panel 1 and the decorative panel 18 of the main structure, the keel system includes an indoor decorative transverse keel 16 and an indoor decorative vertical keel 17, and a plurality of horizontally arranged indoor decorative transverse keels 16 are connected with a plurality of vertically arranged indoor decorative vertical keels 17 to form a keel system; the decorative panel 18 is installed on the indoor side of the keel system, and the outdoor side of the keel system is connected to the keel connector 22 embedded in the precast concrete trough panel 26 through the indoor decorative transverse keel 16.

[0066] Preferably, the decorative panel 18 can be adaptively selected according to actual engineering requirements, such as a 9mm+9mm decorative panel, etc. The decorative panel 18 can be installed by staggered assembly in the prior art, which will not be described in detail here.

[0067] The keel system formed by the crisscrossing of the interior decoration horizontal keel 16 and the interior decoration vertical keel 17 can meet the installation requirements of the decorative panel 18, and the installation is firm and reliable. The position of the interior decoration horizontal keel 16 matches the embedded position of the keel connector 22 in the precast concrete trough plate 26, so as to facilitate the quick and reliable connection of the interior decoration horizontal keel 16 and the keel connector 22.

[0068] Please see attached Fig.14 The precast concrete trough plates 26 are provided with vertical wall grooves 19 at both side edges, and the vertical wall grooves 19 are arranged throughout the length of the precast concrete trough plates 26; when two precast concrete trough plates 26 are horizontally spliced, the vertical wall grooves 19 of the two precast concrete trough plates 26 are spliced ​​to form a vertical drainage cavity 20; a vertical wall seam is formed between the two horizontally spliced ​​precast concrete trough plates 26.

[0069] In order to avoid water seepage in the vertical joints of the wall between the precast concrete trough plates 26, a vertical notch 19 is opened in the wall to form a drainage cavity 20 in the vertical joints of the wall, so as to facilitate the discharge of water seeping into the vertical joints of the wall, thereby ensuring the waterproof and anti-seepage performance of the entire wall.

[0070] The cross-sectional dimensions of the drainage cavity 20 can be adaptively adjusted according to drainage requirements. The length of the drainage cavity 20 is the same as the precast concrete trough plate 26, so that after the precast concrete trough plate 26 is vertically spliced, the drainage cavity 20 can also be vertically spliced ​​to form a whole to ensure smooth drainage.

[0071] Please see attached Fig.14 and attached Fig.15 The vertical wall seam is connected with the horizontal wall seam 12 through the drainage cavity 20 to form a drainage channel, and a sealing drainage structure is embedded in the vertical wall seam and the horizontal wall seam 12 (hereinafter referred to as the construction seam).

[0072] The inner and outer ends of the vertical wall seams and the horizontal wall seams 12 are sealed by a sealing drainage structure to achieve a waterproof effect. The middle parts of the vertical wall seams and the horizontal wall seams 12 are connected to form criss-cross drainage channels to ensure efficient discharge of seepage water.

[0073] Please see attached Fig.14 and attached Fig.15The sealing and drainage structure includes a waterproof sealant 8, a polyethylene rod 9, a water stop strip 10, a fireproof plug 11 and a drainage pipe 21; the polyethylene rod 9 is filled between the outdoor end of the construction joint and the drainage channel, and the waterproof sealant 8 is sealed and filled between the outer side of the polyethylene rod 9 and the outdoor end of the construction joint; the water stop strip 10 is filled between the indoor end of the construction joint and the drainage channel, and the fireproof plug 11 is sealed and filled between the inner side of the water stop strip 10 and the indoor end of the construction joint; one end of the drainage pipe 21 is connected to the drainage channel, and the other end of the drainage pipe 21 passes through the precast concrete trough plate external wall panel 1 and extends obliquely downward to the outdoors.

[0074] The sealing and drainage structures in the vertical wall seams and the horizontal wall seams 12 have the same structure, and only the arrangement directions (vertical and horizontal) are different. The inner ends of the vertical wall seams and the horizontal wall seams 12 are sealed by waterproof sealant 8 and polyethylene rods 9, and the outer ends of the vertical wall seams and the horizontal wall seams 12 are sealed by water stop strips 10 and fireproof plugging 11.

[0075] A drainage channel for drainage is formed in the space between the polyethylene rod 9 and the water stop strip 10, and the drainage pipe 21 connects the drainage channel with the outdoor environment, so as to facilitate the drainage of water infiltrated into the wall. The number and arrangement position of the drainage pipes 21 can be adjusted according to the actual drainage requirements and engineering design adaptability to ensure efficient drainage of the seepage water.

[0076] Preferably, the polyethylene rod 9 can be a round or oval polyethylene rod, and the water stop strip 10 can be a water stop rubber strip. The drain pipe 21 can be a PVC pipe, and the drain pipe 21 is tilted downward and outward, which can ensure the drainage function while preventing external water from entering.

[0077] Please see attached Fig. 9 To Attachment Fig.11 The embedded connecting parts include an angle steel connecting part 5 and an embedded part 6. The embedded part 6 is embedded in the beam 7 or the parapet 3 of the main structure. One end face of the angle steel connecting part 5 is fixedly connected to the embedded part 6, and the other end face of the angle steel connecting part 5 is fixedly connected to the embedded bolt sleeve 24.

[0078] When the beam 7 is a concrete beam, the embedded part 6 can be embedded in the connection position of the angle steel connector 5 when the concrete beam is poured. The embedded part 6 can be an embedded part composed of a conventional embedded plate and an anchor rod. The embedding process and its working principle will not be described here.

[0079] The angle steel connector 5 is an L-shaped angle steel, and its vertical section can be attached to the inner wall of the precast concrete trough plate external wall panel 1, and the vertical section of the angle steel is fixedly connected to the precast concrete trough plate external wall panel 1 by connecting the embedded bolt sleeve 24, and its horizontal section of the angle steel can be attached to the embedded plate of the embedded part 6, so that the embedded part 6 and the angle steel connector 5 can be fixed by screwing or welding.

[0080] Please see attached Figure 2 To Attachment Figure 4 , Attachment Figure 6 To Attachment Figure 8 The sleeve connector 2 also includes lifting embedded bolt sleeves 23, which are arranged in pairs and symmetrically embedded in the top of the precast concrete trough plate 26.

[0081] By setting the lifting embedded bolt sleeve 23, it is convenient to connect with the wire rope of the lifting equipment, so as to facilitate the lifting of the precast concrete trough plate external wall panel 1, and further facilitate the production and installation of the precast concrete trough plate external wall panel 1.

[0082] Please see attached Figure 1 , Attachment Figure 2 , Attachment Figure 4 To Attachment Figure 6 and attached Figure 8 The sleeve connector 2 also includes a diagonal brace embedded bolt sleeve 30, and a diagonal brace is installed between the diagonal brace embedded bolt sleeve 30 and the main structure.

[0083] By setting the diagonal brace embedded bolt sleeve 30, the diagonal brace can be connected between the floor finish surface 15, ceiling 14, beam 7 and other components of the main structure and the precast concrete trough plate external wall panel 1, thereby improving the installation reliability of the precast concrete trough plate external wall panel 1.

[0084] Preferably, the diagonal brace embedded bolt sleeves 30 can be arranged at the upper and lower parts of the precast concrete trough plate external wall panel 1, and the number and position of the diagonal brace embedded bolt sleeves 30 can be selected according to the stress points of the diagonal brace and the stress safety adaptability.

[0085] Please see attached Figure 1 To Attachment Fig.15 , Example 1:

[0086] Please see attached Figure 1 To Attachment Figure 4 In a certain prefabricated building project, the concrete frame has a floor height of 4.5m, and a 90mm thick extruded polystyrene thermal insulation board is used as the thermal insulation material 25. The precast concrete trough plate external wall panel 1 is composed of a 60mm thick external wall panel, a 90mm thick precast concrete trough plate 26 embedded with the thermal insulation material 25, and 120mm thick concrete vertical structural ribs are formed on both sides of the centrally embedded thermal insulation material 25. The precast concrete trough plate external wall panel 1 is integrally formed, with a total thickness of 150mm, a total height of 4365mm, a width of 1460mm, and a total weight of 1.35 tons.

[0087] Please see attached Figure 5 To Attachment Figure 8For the precast concrete trough plate external wall panel 1 with the window hole 27, the size of the window hole 27 is 1215mm*1800mm. When the precast concrete trough plate external wall panel 1 is manufactured, the hole is reserved according to the position and size of the window hole 27, and 120mm thick concrete vertical structural ribs are formed on both sides of the centrally arranged window hole 27 and the insulation material 25. The precast concrete trough plate external wall panel 1 with the window hole 27 is also integrally formed, with a total thickness of 150mm, a total height of 4365mm, a width of 1460mm, and a total weight of 1.03 tons.

[0088] For the precast concrete trough-shaped external wall panel 1 with a window opening 27, a pre-embedded window frame or a pre-embedded sub-frame 28 can be embedded in the window opening. The pre-embedded window frame is used to directly embed the window glass, and the pre-embedded sub-frame 28 is used to install the window glass after the window frame is embedded, so as to facilitate the installation of the window glass at the construction site after the precast concrete trough-shaped external wall panel 1 is installed.

[0089] When the above two types of prefabricated concrete trough-shaped plate external wall panels 1 are prefabricated, two lifting embedded bolt sleeves 23 are pre-buried on the top of the prefabricated concrete trough-shaped plate 26 for lifting at the construction site.

[0090] When the above two types of precast concrete trough plate external wall panels 1 are prefabricated, a set of sleeve connectors 2 are embedded in the upper and lower parts of the concrete vertical structural ribs on both sides, and each set of sleeve connectors 2 includes two connecting embedded bolt sleeves 24 and two diagonal brace embedded bolt sleeves 30. Preferably, the connecting embedded bolt sleeves 24 are arranged near the end of the precast concrete trough plate 26, and the connecting embedded bolt sleeves 24 are used to connect with the main structure, and also serve as embedded bolt sleeves for factory production and hoisting. The diagonal brace embedded bolt sleeves 30 are arranged on the side of the connecting embedded bolt sleeves 24 away from the end of the precast concrete trough plate 26, and the diagonal brace embedded bolt sleeves 30 are used to set diagonal braces between the precast concrete trough plate external wall panel 1 and the main structure during construction, and also serve as bolt sleeves for factory production and hoisting.

[0091] Please see attached Fig.12 and attached Fig.13 When the above two types of precast concrete trough-shaped plate external wall panels 1 are precast, a groove-type keel connector 22 is transversely embedded in the precast concrete trough-shaped plate 26 to connect with the indoor decorative transverse keel 16 of the keel system, so that the decorative panel 18 is fixedly connected to the inner wall of the precast concrete trough-shaped plate external wall panel 1 through the keel system. Preferably, the 9mm+9mm decorative panel 18 can be installed with staggered seams, and the keel system can be designed and completed in the decoration in-depth design stage, and transported to the construction site for assembly after being produced in the factory.

[0092] Please see attached Fig.14 and attached Fig.15When the above two types of precast concrete trough-shaped plate external wall panels 1 are prefabricated, vertical wall grooves 19 are formed on the end surfaces of both sides of the precast concrete trough-shaped plate 26. The groove depth of the vertical wall groove 19 is 10 mm, the outer width of the vertical wall groove 19 is 50 mm, and the inner width of the vertical wall groove 19 is 40 mm.

[0093] When the precast concrete trough-shaped external wall panels 1 are horizontally spliced, a 20 mm vertical wall seam is reserved between the two precast concrete trough-shaped external wall panels 1, and the vertical wall notches 19 of the two precast concrete trough-shaped external wall panels 1 are spliced ​​to form a drainage cavity 20.

[0094] When the above two types of precast concrete trough plate external wall panels 1 are prefabricated, tongues and grooves 13 are formed on the top and bottom surfaces of the precast concrete trough plate 26 to facilitate vertical matching and splicing of the precast concrete trough plate external wall panels 1 through the tongue and groove.

[0095] When the precast concrete trough-shaped external wall panels 1 are vertically spliced, a 20 mm wall horizontal seam 12 is reserved between the two precast concrete trough-shaped external wall panels 1, and the wall horizontal seam 12 with a high inside and a low outside is formed through the tongue-and-groove 13, so that external rainwater can penetrate into the room through the wall horizontal seam 12. A sealing drainage structure is set in the construction joint, and the double waterproof system of structural waterproofing and material waterproofing is realized by using the inner high and outer low structure of the tongue-and-groove 13 and the sealing drainage structure.

[0096] The structure of the sealed drainage structure from indoor to outdoor in the construction joint is fireproof plugging 11, water stop strip 10, drainage channel, polyethylene rod 9, waterproof sealant 8, which ensures the drainage performance and waterproof and anti-seepage performance of the entire wall structure. At the same time, a drainage pipe 21 is set on the drainage channel, and the drainage pipe 21 penetrates the precast concrete trough plate external wall panel 1 outward and downward, which can be used to discharge the water in the drainage channel outward, and the external rainwater will not enter the drainage channel upward through the drainage pipe 21, further ensuring the waterproof and anti-seepage performance of the entire wall structure.

[0097] For specific construction, please refer to the attached Fig. 9 , at the connection node between the precast concrete trough plate external wall panel 1 and the beam 7 of the bottom layer of the main structure: when installed in the main structure of a concrete structure or a steel structure building, a resting point 29 for connecting the bottom of the precast concrete trough plate external wall panel 1 is set on the outer side of the beam 7, and the diagonal brace and the diagonal brace embedded bolt sleeve 30 of the precast concrete trough plate external wall panel 1 are used to connect and support the main structure.

[0098] If the beam 7 is a concrete beam, the embedded parts 6 are pre-embedded when the beam 7 is cast. If the beam 7 is a steel structure beam, the embedded parts 6 are not required. After the precast concrete trough plate external wall panel 1 is installed, the angle steel connector 5 is used at the bottom of the precast concrete trough plate external wall panel 1 to connect the embedded bolt sleeve 24 with the embedded part 6 or the steel structure beam.

[0099] Please see attached Fig.10 When the precast concrete trough plate external wall panel 1 is installed in the main structure of a concrete structure or a steel structure building at the connection node between the precast concrete trough plate external wall panel 1 and the beam 7 between the layers, the upper precast concrete trough plate external wall panel 1 is installed on the lower precast concrete trough plate external wall panel 1, and the top surface of the tongue and groove 13 of the lower precast concrete trough plate external wall panel 1 is flush with the top surface of the beam 7 between the layers. The diagonal brace is used to embed the bolt sleeve 30 of the diagonal brace of the upper precast concrete trough plate external wall panel 1 and connect the support with the main structure.

[0100] If the beam 7 is a concrete beam, the embedded parts 6 are pre-embedded when the beam 7 is cast. If the beam 7 is a steel structure beam, the embedded parts 6 are not required. After the upper precast concrete trough plate external wall panel 1 is installed, the angle steel connector 5 is used at the bottom of the precast concrete trough plate external wall panel 1 to connect the embedded bolt sleeve 24 with the embedded parts 6 or the steel structure beam.

[0101] Please see attached Fig.11 At the connection node between the precast concrete trough plate external wall panel 1 and the parapet 3, when installed in the main structure of a concrete structure or a steel structure building, after the last precast concrete trough plate external wall panel 1 located at the top is installed, an angle steel connector 5 is used at the top of the precast concrete trough plate external wall panel 1 to connect the embedded bolt sleeve 24 with the embedded part 6 pre-embedded in the parapet 3.

[0102] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A prefabricated concrete trough-shaped plate external wall panel, characterized in that: include: The invention relates to a heat-insulating material (25), a precast concrete trough plate (26), a keel connector (22) and a sleeve connector (2); the inner wall of the precast concrete trough plate (26) is concavely formed with one or more embedding grooves matching the heat-insulating material (25); the inner wall of the precast concrete trough plate (26) is pre-buried with a plurality of keel connectors (22), so that the decorative panel (18) is installed on the inner wall of the precast concrete trough plate (26) through the keel system; the inner wall of the precast concrete trough plate (26) is provided with a plurality of keel connectors (22) so that the decorative panel (18) is installed on the inner wall of the precast concrete trough plate (26) through the keel system; A plurality of sleeve connectors (2) are pre-buried, so that the precast concrete trough plate external wall panels (1) are fixedly connected to the main structure through the sleeve connectors (2) via the pre-buried connectors; the top and bottom of the precast concrete trough plate (26) are formed with matching tongues and grooves (13), so that two precast concrete trough plate external wall panels (1) are vertically spliced ​​through the tongues and grooves (13) with the inner side higher and the outer side lower, and a plurality of precast concrete trough plate external wall panels (1) are spliced ​​upward from the bottom layer of the main structure to the parapet (3).

2. The precast concrete trough-shaped plate external wall panel according to claim 1, characterized in that: A window hole (27) is formed on the precast concrete trough-shaped plate (26); a pre-buried window frame or a pre-buried sub-frame (28) is embedded in the window hole (27).

3. The precast concrete trough-shaped plate external wall panel according to claim 1, characterized in that: At the connection node between the precast concrete trough plate external wall panel (1) and the bottom layer of the main structure, a resting point (29) is arranged on the outside of the beam (7) of the bottom layer of the main structure, and a concave portion matching the tongue and groove (13) is formed on the outside of the top surface of the resting point (29), so that a horizontal wall seam (12) is formed between the bottom of the precast concrete trough plate external wall panel (1) and the resting point (29); the sleeve connector (2) comprises a connecting embedded bolt sleeve (24) embedded in the bottom of the precast concrete trough plate (26), so that the precast concrete trough plate external wall panel (1) is connected to the beam (7) of the bottom layer of the main structure through the connecting embedded bolt sleeve (24) and the embedded connector.

4. The precast concrete trough-shaped plate external wall panel according to claim 1, characterized in that: At the connection node between the precast concrete trough-shaped plate external wall panel (1) and the main structure layer, the top surface of the tongue and groove (13) of the precast concrete trough-shaped plate external wall panel (1) located in the next layer is flush with the top surface of the beam (7) between the main structure layers, and the precast concrete trough-shaped plate external wall panel (1) located in the previous layer is spliced ​​to the top of the precast concrete trough-shaped plate external wall panel (1) located in the next layer through the tongue and groove (13), and a horizontal wall seam (12) is formed between the two adjacent layers of precast concrete trough-shaped plate external wall panels (1). ); the sleeve connector (2) comprises a connecting pre-embedded bolt sleeve (24) pre-embedded in the bottom and top of the precast concrete trough plate (26), so that the precast concrete trough plate external wall panel (1) located on the upper layer is connected to the top surface of the beam (7) between the main structure layers through the connecting pre-embedded bolt sleeve (24) at the bottom through the pre-embedded connector, and the precast concrete trough plate external wall panel (1) located on the lower layer is connected to the bottom surface of the beam (7) between the main structure layers through the connecting pre-embedded bolt sleeve (24) at the top through the pre-embedded connector.

5. The precast concrete trough-shaped plate external wall panel according to claim 1, characterized in that: At the connection node between the precast concrete trough plate external wall panel (1) and the parapet wall (3) of the main structure, the tongue (13) at the top of the precast concrete trough plate external wall panel (1) is higher than the top surface of the parapet wall (3), and a cover plate (4) is installed between the tongue (13) at the top of the precast concrete trough plate external wall panel (1) and the top surface of the parapet wall (3); the sleeve connector (2) includes a connecting pre-embedded bolt sleeve (24) embedded in the top of the precast concrete trough plate (26), so that the precast concrete trough plate external wall panel (1) is connected to the parapet wall (3) through the connecting pre-embedded bolt sleeve (24) via the embedded connector.

6. The precast concrete channel plate external wall panel according to claim 1, characterized in that: At the connection node between the precast concrete trough panel external wall panel (1) and the decorative panel (18) of the main structure, the keel system includes an indoor decorative transverse keel (16) and an indoor decorative vertical keel (17), and a plurality of indoor decorative transverse keels (16) arranged horizontally are connected with a plurality of indoor decorative vertical keels (17) arranged vertically to form the keel system; the decorative panel (18) is installed on the indoor side of the keel system, and the outdoor side of the keel system is connected to the keel connector (22) pre-buried in the precast concrete trough panel (26) through the indoor decorative transverse keel (16).

7. The precast concrete trough-shaped plate external wall panel according to any one of claims 1 to 6, characterized in that: The precast concrete trough-shaped plates (26) are provided with vertical wall notches (19) at both side edges, and the vertical wall notches (19) are arranged throughout the length of the precast concrete trough-shaped plates (26); when two precast concrete trough-shaped plates (26) are horizontally spliced, the vertical wall notches (19) of the two precast concrete trough-shaped plates (26) are spliced ​​to form a vertical drainage cavity (20); and a vertical wall seam is formed between the two horizontally spliced ​​precast concrete trough-shaped plates (26).

8. The precast concrete channel plate external wall panel according to claim 7, characterized in that: The vertical wall joint is connected to the horizontal wall joint (12) through a drainage cavity (20) to form a drainage channel, and a sealing drainage structure is embedded in the vertical wall joint and the horizontal wall joint (12); the sealing drainage structure comprises a waterproof sealant (8), a polyethylene rod (9), a water stop strip (10), a fireproof plug (11) and a drainage pipe (21); the polyethylene rod (9) is filled between the outdoor end of the construction joint and the drainage channel, and the waterproof sealant (8) is sealed and filled between the outer side of the polyethylene rod (9) and the outdoor end of the construction joint; the water stop strip (10) is filled between the indoor end of the construction joint and the drainage channel, and the fireproof plug (11) is sealed and filled between the inner side of the water stop strip (10) and the indoor end of the construction joint; one end of the drainage pipe (21) is connected to the drainage channel, and the other end of the drainage pipe (21) passes through the precast concrete trough plate external wall panel (1) and extends obliquely downward to the outdoors.

9. The precast concrete trough slab external wall panel according to any one of claims 3 to 5, characterized in that: The embedded connecting piece comprises an angle steel connecting piece (5) and an embedded piece (6), wherein the embedded piece (6) is embedded in the main structure, one end face of the angle steel connecting piece (5) is fixedly connected to the embedded piece (6), and the other end face of the angle steel connecting piece (5) is fixedly connected to the embedded bolt sleeve (24).

10. The precast concrete trough-shaped plate external wall panel according to any one of claims 1, 3-5, characterized in that: The sleeve connector (2) further comprises lifting embedded bolt sleeves (23), which are arranged in pairs and symmetrically embedded in the top of the precast concrete trough plate (26); the sleeve connector (2) further comprises diagonal brace embedded bolt sleeves (30), and a diagonal brace is installed between the diagonal brace embedded bolt sleeves (30) and the main structure.

Images