Prefabricated diagonal bracing type UHPC (Ultra High Performance Concrete) external wall panel and energy consumption type assembled wall body structure thereof

Abstract

The invention discloses a prefabricated diagonal bracing type UHPC external wall panel and an energy dissipation type assembled wall body structure thereof.The prefabricated diagonal bracing type UHPC external wall panel comprises a UHPC inner sheet plate, an inner interlayer and a UHPC outer sheet plate which are sequentially arranged in a stacked mode, the inner interlayer comprises a UHPC inner diagonal bracing and a heat preservation and insulation plate, the UHPC inner sheet plate is connected with the UHPC outer sheet plate through the UHPC inner diagonal bracing, and the UHPC inner sheet plate is connected with the heat preservation and insulation plate through the heat preservation and insulation plate. A plurality of hollow-out areas are formed in the UHPC inner inclined strut, and the heat preservation and insulation plates are located in the hollow-out areas. According to the prefabricated diagonal bracing type UHPC externally-hung wallboard, the corresponding UHPC inner diagonal bracing is arranged to achieve connection of the UHPC inner sheet boards and the UHPC outer sheet boards, configuration of FRP connecting pieces, reinforcing meshes and the like of traditional wallboards is omitted, and cooperative work of the inner sheet boards and the outer sheet boards can be achieved without additional FRP connecting pieces, reinforcing meshes and the like; therefore, the structure of the prefabricated diagonal bracing type UHPC external wall panel is obviously simplified, and the construction difficulty is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and in particular to a prefabricated diagonally braced UHPC exterior wall panel and an energy-consuming assembled wall structure thereof. Background Art

[0002] With the rapid development of prefabricated buildings in my country, prefabricated concrete external wall panels have been widely used in prefabricated building structures. However, existing prefabricated concrete external wall panels have many defects, such as: In existing building structures, external wall panels need to use a large number of steel or FRP connectors to connect the inner and outer concrete panels, and the inner and outer concrete panels need to be equipped with steel mesh to prevent concrete cracking. This structure involves a large number of processes in the manufacturing process of traditional concrete sandwich panels, making the overall wall panel structure more complicated.

[0003] In structures with high storeys, such as substations, single wall panels are usually large in area. If ordinary concrete is used, the wall panels will inevitably be heavy, posing a challenge to transportation and installation.

[0004] The current design of the connection nodes of external concrete wall panels is mainly bottom-supported, and the center of gravity of the wall panels is above the support point, which is easy to tip over. The traditional connection node requires four node connectors to be embedded in each panel of each layer of the main structure. The embedded positioning requirements are high, and the embedded parts are easy to deviate with the vibration of the concrete, resulting in installation difficulties. In addition, the traditional node requires the wall panels to be buckled into the embedded connectors from the outside to the inside, which has very strict requirements on the positioning height of the wall panels, making construction more difficult. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a prefabricated diagonal braced UHPC external wall panel and an energy-absorbing assembled wall structure thereof, so as to solve the problem that the existing external wall panels need to be configured with steel mesh and FRP connectors, resulting in a relatively complex structure.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a prefabricated diagonal brace type UHPC external wall panel, which includes a UHPC inner page panel, an inner partition layer and a UHPC outer page panel stacked in sequence, the inner partition layer includes a UHPC inner diagonal brace and a thermal insulation board, the UHPC inner page panel is connected to the UHPC outer page panel through the UHPC inner diagonal brace, a plurality of hollow areas are opened on the UHPC inner diagonal brace, and the thermal insulation board is located in the hollow area.

[0007] Furthermore, in the exterior wall panel described in the present invention, the UHPC inner diagonal brace includes an outer peripheral portion and an inner connecting portion which are connected to each other, and the inner connecting portion is arranged in a region surrounded by the outer peripheral portion.

[0008] Correspondingly, another object of the invention is to provide an energy-absorbing assembled wall structure of a prefabricated diagonal brace type UHPC external wall panel, the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel comprising a connecting mechanism and a plurality of prefabricated diagonal brace type UHPC external wall panels as described above, two adjacent prefabricated diagonal brace type UHPC external wall panels are detachably connected via the connecting mechanism, the connecting mechanism comprises a connecting member, the connecting member comprises an upper limiting area and a lower load-bearing area connected to each other, the upper limiting area and the lower load-bearing area are respectively detachably connected to two adjacent prefabricated diagonal brace type UHPC external wall panels.

[0009] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonally braced UHPC external wall panels described in the present invention, the lower load-bearing area includes a bottom plate and a first vertical back plate portion arranged on the bottom plate, the first vertical back plate portion is provided with a waist-shaped hole, and the bottom plate is provided with a through hole.

[0010] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonally braced UHPC external wall panel described in the present invention, the upper limiting area includes a second vertical back plate portion, the second vertical back plate portion is connected to a section of the first vertical back plate portion away from the bottom plate, and the second vertical back plate portion is provided with a U-shaped hole, and the U-shaped hole opens toward an end away from the lower load-bearing area.

[0011] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel described in the present invention, the connecting mechanism includes a first embedded bolt assembly, and the first embedded bolt assembly includes a first embedded steel plate, a first embedded bolt and a first nut connected in sequence, wherein the first embedded steel plate is arranged in the prefabricated diagonal brace type UHPC external wall panel, and the first embedded bolt extends outward from the first embedded steel plate, and the end of the first embedded bolt away from the prefabricated diagonal brace type UHPC external wall panel passes through the waist-shaped hole and is detachably connected to the lower load-bearing area through the first nut.

[0012] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel described in the present invention, the connecting mechanism includes a second embedded bolt assembly, and the second embedded bolt assembly includes a second embedded steel plate, a second embedded bolt and a second nut connected in sequence, wherein the second embedded steel plate is arranged in the prefabricated diagonal brace type UHPC external wall panel, and the second embedded bolt extends outward from the second embedded steel plate, and the end of the second embedded bolt away from the prefabricated diagonal brace type UHPC external wall panel passes through the U-shaped hole and is detachably connected to the upper limiting area through the second nut.

[0013] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel described in the present invention, the connecting mechanism also includes a shock-absorbing component, and two groups of shock-absorbing components are sleeved on the first embedded bolt, one group of shock-absorbing components is arranged between the prefabricated diagonal brace type UHPC external wall panel and the connecting piece, and the other group of shock-absorbing components is arranged between the first nut and the connecting piece.

[0014] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonally braced UHPC exterior wall panels described in the present invention, the shock-absorbing components include pads and friction plates, and the friction plates in the two groups of shock-absorbing components are both located on the side close to the connecting member.

[0015] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal braced UHPC external wall panel described in the present invention, it also includes a bolt connector and a frame beam, the bolt connector includes a third embedded steel plate and L-shaped embedded bolts connected to each other, the third embedded steel plate is arranged in the frame beam, at least part of the L-shaped embedded bolts is arranged in the frame beam, and at least part of the L-shaped embedded bolts extends out of the frame beam to be detachably connected to the connector.

[0016] The beneficial effects of the present invention are as follows: the prefabricated diagonal brace type UHPC external wall panel in the present invention is provided with corresponding UHPC inner diagonal braces to realize the connection between the UHPC inner page panel and the UHPC outer page panel, eliminating the configuration of the traditional wall panel FRP connectors and steel mesh, etc., and the coordinated work of the inner and outer leaf wall panels can be realized without adding additional connectors and steel mesh, etc., thereby significantly simplifying the structure of the prefabricated diagonal brace type UHPC external wall panel, and can be cast and formed in one time, greatly reducing the construction difficulty. At the same time, the prefabricated diagonal brace type UHPC external wall panel in the present invention uses UHPC as the panel material. Compared with ordinary concrete, UHPC has extremely high compressive strength and excellent crack resistance. Therefore, the prefabricated diagonal brace type UHPC external wall panel can be made into a lighter form, and there is no need to configure a steel mesh, thereby significantly reducing the weight of the prefabricated diagonal brace type UHPC external wall panel and simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wall panel of the present invention from a perspective in one implementation mode; Figure 2 It is a structural schematic diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel of the present invention at a viewing angle in one embodiment after hiding part of the structure; Figure 3 for Figure 2 A partial enlarged schematic diagram of an energy-dissipating assembled wall structure of a prefabricated diagonal braced UHPC external wall panel is shown; Figure 4 It is a schematic structural diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal bracing UHPC external wall panel of the present invention at a viewing angle in one embodiment after the UHPC inner page panel is hidden; Figure 5 It is a structural schematic diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal bracing UHPC external wall panel of the present invention in another perspective under one embodiment after hiding the UHPC inner page panel; Figure 6 for Figure 1 A top view of the energy-dissipating assembled wall structure of the prefabricated diagonally braced UHPC external wall panels in one embodiment; Figure 7 for Figure 6 A partial enlarged view of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel at point A; Figure 8 It is a structural schematic diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel of the present invention at a viewing angle in one embodiment after hiding another part of the structure; Fig. 9 It is a schematic structural diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel of the present invention from a perspective in one embodiment after hiding another part of the structure; Fig.10 It is a structural schematic diagram of a connecting member in an energy-dissipating assembled wall structure of a prefabricated diagonal brace type UHPC external wall panel according to the present invention from a perspective in an implementation manner; Fig.11 It is a schematic structural diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel of the present invention from a perspective in one embodiment after hiding another part of the structure; Fig.12 It is a structural schematic diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel of the present invention at a viewing angle in one embodiment after hiding a part of the structure; Fig.13 It is a structural schematic diagram of the energy-dissipating assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel of the present invention at a viewing angle in one embodiment after hiding a part of the structure; Fig.14 for Fig.13 A partial enlarged view of location B of the energy-dissipating assembled wall structure of the prefabricated diagonally braced UHPC external wall panel; Fig.15 for Fig.13 A partial enlarged view of location C of the energy-dissipating assembled wall structure of the prefabricated diagonally braced UHPC external wall panel; Fig.16 It is a schematic diagram of the combination of frame beams and bolt connectors in the energy-dissipating assembled wall structure of the prefabricated diagonally braced UHPC exterior wall panels described in the present invention.

[0018] Description of labels: 1. Prefabricated diagonal brace type UHPC external wall panel; 11. UHPC inner page panel; 12. UHPC inner diagonal brace; 13. UHPC outer page panel; 14. Thermal insulation board; 15. Peripheral part; 16. Internal connection part; 2. Connector; 21. Partition; 3. Lower load-bearing area; 31. First vertical back plate; 32. First stiffening rib plate; 33. Bottom plate; 34. Waist-shaped hole; 35. Through hole; 4. Upper limiting area; 41. Second vertical back plate portion; 42. Second stiffening rib plate; 43. U-shaped hole; 5. first embedded bolt assembly; 51. first embedded bolt; 52. first nut; 6. second embedded bolt assembly; 61. second embedded bolt; 62. second nut; 7. Bolt connector; 71. L-shaped embedded bolt; 72. third embedded steel plate; 73. third nut; 8. Frame beam; 9. Shock absorber assembly; 91. Friction plate; 92. Backing plate. DETAILED DESCRIPTION

[0019] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0020] With the rapid advancement of prefabricated buildings in my country, prefabricated concrete external sandwich wall panels have been widely used in prefabricated building structures. Existing building structure external wall panels require a large number of steel or FRP connectors to connect the inner and outer leaf concrete panels, and the concrete leaf panels need to be equipped with steel mesh to prevent concrete cracking. This structure involves a large number of processes in the manufacturing process of traditional concrete sandwich panels.

[0021] Ultra-High Performance Concrete (UHPC) is a cement-based material with ultra-high compressive strength, high tensile strain and excellent durability. The prefabricated diagonal braced UHPC external wall panel proposed in the present invention uses UHPC as the panel material, and realizes the coordinated work of the inner and outer leaf wall panels through the UHPC internal diagonal braces, eliminating the configuration of traditional wall panel connectors and steel mesh, thereby significantly simplifying the wall panel structure, and realizing one-time casting of the wall panel, greatly reducing the construction difficulty. In structures with high floor heights such as substations, single wall panels are usually large in area. If ordinary concrete is used, the wall panels will inevitably be heavy, which will pose a challenge to transportation and installation. The use of UHPC can significantly reduce the thickness of the wall panels and reduce the weight of the wall panels. At the same time, UHPC is not easy to damage and has good durability, saving maintenance costs.

[0022] Based on this, please refer to Figure 1 as well as Figure 2 The present invention provides a prefabricated diagonal brace type UHPC exterior wall panel 1, which includes a UHPC inner page panel 11, an inner partition layer and a UHPC outer page panel 13 which are stacked in sequence, the inner partition layer includes a UHPC inner diagonal brace 12 and a thermal insulation board 14, the UHPC inner page panel is connected to the UHPC outer page panel through the UHPC inner diagonal brace, a plurality of hollow areas are opened on the UHPC inner diagonal brace, and the thermal insulation board is located in the hollow area.

[0023] From the above description, it can be seen that the beneficial effects of the present invention are as follows: the prefabricated diagonal brace type UHPC external wall panel 1 in the present invention is provided with corresponding UHPC inner diagonal braces 12 to realize the connection between the UHPC inner page panel 11 and the UHPC outer page panel 13, eliminating the configuration of traditional wall panel connectors and steel meshes, etc., and the coordinated work of the inner and outer leaf wall panels can be realized without adding additional FRP connectors and steel meshes, etc., thereby significantly simplifying the structure of the prefabricated diagonal brace type UHPC external wall panel 1, and can realize one-time casting and molding, which greatly reduces the construction difficulty.

[0024] In addition, it should be noted that the materials of the UHPC inner page plate 11, the UHPC outer page plate 13 and the UHPC inner diagonal brace 12 in the present invention are all UHPC. Traditional precast concrete sandwich insulation wall panels require a large number of steel or FRP connectors to connect the inner and outer leaf concrete panels, and the concrete page plates need to be equipped with steel mesh to prevent concrete cracking. This structure involves a large number of processes in the manufacturing process of traditional concrete sandwich panels. The precast diagonal brace type UHPC external wall panel 1 proposed in the present invention uses UHPC as the panel material. Compared with ordinary concrete, UHPC has extremely high compressive strength and excellent crack resistance. Therefore, the precast diagonal brace type UHPC external wall panel 1 can be made into a lighter form, and there is no need to configure a steel mesh, which significantly reduces the weight of the precast diagonal brace type UHPC external wall panel 1 while simplifying the structure. On the other hand, the present invention realizes the connection between the inner and outer UHPC panels 13 by changing the structural form, i.e., using the UHPC inner diagonal brace 12 made of UHPC material, and the coordinated work of the UHPC inner panel 11 and the UHPC outer panel 13 can be realized without additional FRP connectors. Moreover, the diagonal brace prefabricated diagonal brace UHPC external wall panel 1 in the present invention only contains two materials, UHPC and thermal insulation board 14, and can be cast in one time, which greatly simplifies the construction process.

[0025] Furthermore, in the prefabricated diagonal brace type UHPC exterior wall panel 1 described in the present invention, the UHPC inner diagonal brace 12 includes an outer peripheral portion 15 and an inner connecting portion 16 connected to each other, and the inner connecting portion 16 is arranged in the area surrounded by the outer peripheral portion 15 .

[0026] In practical applications, such as Figure 3 As shown, the prefabricated diagonal brace type UHPC external wall panel 1 is rectangular in shape as a whole, and the UHPC inner page panel 11 and the UHPC outer page panel 13 are also rectangular in shape. The outer peripheral portion 15 of the UHPC inner diagonal brace 12 is rectangular in shape as a whole, and the inner connecting portion 16 is X-shaped as a whole, that is, the inner connecting portion 16 includes two cross-connected straight plates, each of which connects two diagonal corners of the rectangular ring-shaped outer peripheral portion 15.

[0027] In existing walls, the design of the connection nodes of external concrete wall panels is mainly bottom-supported, and the center of gravity of the wall panels is above the support point, which is easy to tip over. The main structure of the traditional connection node requires four node connectors to be embedded in each layer of each panel. The embedded positioning requirements are high, and the embedded parts are easily displaced due to the vibration of the concrete, making installation difficult. In addition, the traditional node requires the wall panels to be buckled into the embedded connectors from the outside to the inside, which has very strict requirements on the positioning height of the wall panels, making construction difficult. To this end, another object of the invention is to provide an energy-absorbing assembled wall structure of a prefabricated diagonal brace type UHPC external wall panel, wherein the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel comprises a connecting mechanism and a plurality of prefabricated diagonal brace type UHPC external wall panels 1 as described above, wherein two adjacent prefabricated diagonal brace type UHPC external wall panels 1 are detachably connected via the connecting mechanism, wherein the connecting mechanism comprises a connecting member 2, wherein the connecting member 2 comprises an upper limiting area 4 and a lower load-bearing area 3 connected to each other, wherein the upper limiting area 4 and the lower load-bearing area 3 are detachably connected to two adjacent prefabricated diagonal brace type UHPC external wall panels 1, respectively.

[0028] From the above description, it can be seen that the beneficial effects of the present invention are: the connector 2 includes an upper limiting area 4 and a lower bearing area 3 connected to each other, and is detachably connected to the adjacent upper prefabricated diagonal brace type UHPC external wall panel 1 and lower prefabricated diagonal brace type UHPC external wall panel 1 through the upper limiting area 4 and the lower bearing area 3, wherein the lower prefabricated diagonal brace type UHPC external wall panel can be hung and loaded through the lower bearing area, and the upper prefabricated diagonal brace type UHPC external wall panel can be limited through the upper limiting area. In other words, the support form of the connector 2 of the present invention is an upper bearing type (that is, the main bearing part of the structure is located above the supported object), and the center of the prefabricated diagonal brace type UHPC external wall panel 1 is below the supporting point and will not tip over outward, eliminating the need for diagonal braces for on-site fixing, and making construction safer and more convenient.

[0029] It should be noted that the connector 2 described in the present invention is a load-bearing and position-limiting integrated connector 2, which is welded together from a number of steel sheets, such as Fig. 9As shown, the connecting plate includes a vertical back plate, two stiffening ribs, a bottom plate 33 and a partition 21, wherein the vertical back plate and the two stiffening ribs are arranged on the bottom plate 33 and extend upward in the vertical height direction, and the two stiffening ribs are welded to the left and right sides of the vertical back plate. The partition 21 is arranged at the middle position of the connecting member 2 in the vertical height direction, which divides the connecting member 2 into an upper limiting area 4 and a lower bearing area 3. The upper limiting area 4 and the lower bearing area 3 are respectively connected to two adjacent prefabricated diagonal bracing type UHPC external wall panels 1. Assuming that there are two prefabricated diagonal bracing type UHPC external wall panels 1 to be connected, one of which is an upper wall panel and the other is a lower wall panel, the upper wall panel is stacked on top of the upper wall panel, and the lower bearing area 3 is detachably connected to the lower wall panel through a first embedded bolt assembly 5. The upper limiting area 4 is detachably connected to the upper wall panel through a second embedded bolt assembly 6. Correspondingly, the vertical back plate includes a first vertical back plate portion 31 and a second vertical back plate portion 41, and the stiffening rib plate includes a first stiffening rib plate 32 and a second stiffening rib plate 42. Fig.10 The upper limiting area 4 and the lower load-bearing area 3 are described in detail.

[0030] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonally braced UHPC external wall panel described in the present invention, the lower load-bearing area 3 includes a first vertical back plate portion 31, two first stiffening ribs 32 and a bottom plate 33, the two stiffening ribs are arranged on both sides of the first vertical back plate portion 31, the first vertical back plate portion 31 is provided with a waist-shaped hole 34, and the bottom plate 33 is provided with a through hole 35.

[0031] From the above description, it can be seen that a waist-shaped hole 34 is opened on the first vertical back plate portion 31, and the lower wall panel is hung in the waist-shaped hole 34 in the lower load-bearing area through the first embedded bolt, so that the lower wall panel is relatively hung on the frame beam 8, so that the prefabricated diagonal braced UHPC external wall panel (such as the lower wall panel) is loaded through the lower load-bearing area (i.e., the frame beam 8).

[0032] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal braced UHPC external wall panel described in the present invention, the upper limiting area 4 includes a second vertical back plate portion 41 and two second stiffening ribs 42, and the two second stiffening ribs 42 are arranged on both sides of the second vertical back plate portion 41, and the second vertical back plate portion 41 is provided with a U-shaped hole 43 whose opening is away from the lower load-bearing area 3.

[0033] From the above description, it can be seen that a U-shaped hole 43 with an opening away from the lower load-bearing area 3 is opened in the second vertical back plate portion 41, and the prefabricated diagonal brace type UHPC external wall panel (such as the upper wall panel) can be limited by the U-shaped hole in the upper limiting area.

[0034] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel described in the present invention, the connecting mechanism includes a first embedded bolt assembly 5, and the first embedded bolt assembly 5 includes a first embedded steel plate, a first embedded bolt 51 and a first nut 52 connected in sequence, wherein the first embedded steel plate is embedded in the prefabricated diagonal brace type UHPC external wall panel 1, and the first embedded bolt 51 extends outward from the first embedded steel plate, and the end of the first embedded bolt 51 away from the prefabricated diagonal brace type UHPC external wall panel 1 passes through the waist-shaped hole 34 and is detachably connected to the lower load-bearing area 3 through the nut.

[0035] As can be seen from the above description, the corresponding first embedded bolt assembly 5 is provided to facilitate the arrangement of the connecting member (ie, the lower load-bearing area 3) on the prefabricated diagonal brace type UHPC external wall panel.

[0036] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel described in the present invention, the connecting mechanism includes a second embedded bolt assembly 6, and the second embedded bolt assembly 6 includes a second embedded steel plate, a second embedded bolt 61 and a second nut 62 connected in sequence, wherein the second embedded steel plate is embedded in the prefabricated diagonal brace type UHPC external wall panel 1, and the second embedded bolt 61 extends outward from the second embedded steel plate, and the two ends of the second embedded bolt 61 away from the prefabricated diagonal brace type UHPC external wall panel 1 pass through the U-shaped hole 43 and are detachably connected to the upper limiting area 4 through the second nut.

[0037] As can be seen from the above description, the corresponding second embedded bolt assembly 6 is provided to facilitate the setting of the connecting member (ie, the upper limiting area 4) on the prefabricated diagonal brace type UHPC external wall panel.

[0038] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal braced UHPC external wall panel described in the present invention, it also includes a bolt connector 7 and a frame beam 8, the bolt connector 7 includes L-shaped embedded bolts 71 and a third embedded steel plate 72 connected to each other, the third embedded steel plate 72 is arranged in the frame beam 8, and the third embedded steel plate 72 is provided with screw holes, at least part of the L-shaped embedded bolts 71 is arranged in the frame beam 8, and at least part of the L-shaped embedded bolts 71 extends out of the frame beam 8 to be detachably connected to the connector 2.

[0039] It can be seen from the above description that the corresponding bolt connectors are provided to facilitate the arrangement of the connectors (ie, the lower load-bearing area 3) on the frame beam.

[0040] In practical applications, such as Figure 1 as well as Fig.11As shown, a frame beam 8 is provided on the prefabricated diagonal brace type UHPC external wall panel 1, and the frame beam 8 is located in the upper area of ​​the prefabricated diagonal brace type UHPC external wall panel 1. A frame beam embedded component is provided on the frame beam 8, and the frame beam embedded component includes an L-shaped embedded bolt 71 and a second embedded steel plate, and the second embedded steel plate is embedded in the frame beam 8. The embedded steel plate is provided with screw holes, and some of the L-shaped embedded bolts 71 are arranged in the frame beam 8, and some of the L-shaped embedded bolts 71 extend upward through the screw holes. Correspondingly. In order to fix the connecting member 2 on the frame beam, two circular through holes are opened on the bottom plate 33 of the lower load-bearing area 3, which are used to connect with the L-shaped embedded bolts 71 embedded in the frame beam 8.

[0041] In practical applications, each prefabricated diagonal brace type UHPC external wall panel 1 is provided with an embedded bolt assembly at each of the four corners, wherein two first embedded bolt assemblies 5 are provided at the upper portion of the prefabricated diagonal brace type UHPC external wall panel 1, and two second embedded bolt assemblies 6 are provided at the lower portion of the prefabricated diagonal brace type UHPC external wall panel 1. At the same time, two bolt connectors 7 are provided at positions corresponding to the first embedded bolt assemblies 5 on the frame beam 8 on the prefabricated diagonal brace type UHPC external wall panel 1. The connector 2 is prefabricated in the prefabrication plant and pre-connected with the two first embedded bolts 51 on the upper portion of the prefabricated diagonal brace type UHPC external wall panel 1. After being transported to the site, it is hoisted so that the through hole 35 of the bottom plate 33 of the lower load-bearing area 3 of the connector 2 is inserted into the L-shaped embedded screw at the corresponding position of the main structure (i.e., the frame beam 8), and the fixing is completed by the third nut 73. The deadweight of the prefabricated diagonal brace type UHPC external wall panel 1 is transferred to the main structure (i.e., frame beam) by the upper two embedded bolt support points through the (load-bearing-limiting integrated) connector 2. The lower two embedded bolts of the prefabricated diagonal brace type UHPC external wall panel 1 are inserted into the U-shaped hole of the upper limiting area 4 of the lower load-bearing-limiting integrated connector 2. The hole wall below the U-shaped hole maintains a certain distance, so it does not bear the deadweight of the prefabricated wall panel, but only plays a role in limiting the out-of-plane movement of the wall panel and the friction energy consumption under the action of earthquake.

[0042] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel described in the present invention, the connection mechanism also includes a shock-absorbing component 9, and two groups of shock-absorbing components 9 are sleeved on the first embedded bolt, one of which is arranged between the prefabricated diagonal brace type UHPC external wall panel 1 and the connecting member 2, and the other group of shock-absorbing components 9 is arranged between the first nut 52 and the connecting member 2. Similarly, two groups of shock-absorbing components 9 are also sleeved on the second embedded screw, one of which is arranged between the prefabricated diagonal brace type UHPC external wall panel 1 and the connecting member 2, and the other group of shock-absorbing components 9 is arranged between the second nut 62 and the connecting member 2.

[0043] Furthermore, in the energy-absorbing assembled wall structure of the prefabricated diagonally braced UHPC exterior wall panels described in the present invention, the shock-absorbing assembly 9 includes a pad 92 and a friction plate 91, and the friction plates 91 in the two sets of shock-absorbing assemblies 9 are both located on the side close to the connecting member 2.

[0044] As can be seen from the above description, a corresponding shock-absorbing assembly 9 is provided, and the shock-absorbing assembly 9 includes a friction plate 91 sleeved on the embedded screw rod, so that when in use, the deformation between the wall panel and the main structure under the action of an earthquake can be utilized, and by controlling the pre-tightening force of the embedded bolt and the friction force of the friction plate 91, the damping force of the friction damper can be changed, and the damping force is used to consume the earthquake input energy, thereby improving the seismic performance of the structure. In actual application, the wall panel rotates and deforms under the action of an earthquake, causing the friction plate 91 to slide relatively in the long strip hole (U-shaped hole 43 and waist-shaped hole 34), thereby generating friction energy consumption.

[0045] In addition, it should be noted that the first and second bolt embedded assemblies may also include corresponding first and second bolt sleeves, respectively, so that the first and second embedded bolts can be better connected to the prefabricated diagonal brace type UHPC external wall panel 1, and the positions of the first and second embedded bolts can be better positioned during the casting process of the diagonal brace type UHPC external wall panel 1.

[0046] Correspondingly, the present invention also provides a method for preparing an energy-dissipating assembled wall structure of a prefabricated diagonal braced UHPC external wall panel, which is applied to the energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wall panel as described above, and comprises the following steps: First, the L-shaped embedded bolts 71 and the third steel plate need to be pre-embedded in the frame beam 8 to locate the connection position.

[0047] Secondly, prepare the insulation material, and then use the parallel formwork to support the prefabricated diagonal brace type UHPC external wall panel 1. The parallel formwork allows the UHPC to better discharge air during the pouring process, and the insulation material is fixed to the diagonal brace formwork with bolts, which can prevent the insulation material from floating due to the UHPC. The corresponding embedded steel plates and embedded bolts in the four sets of embedded bolt assemblies are embedded in the four corners of the prefabricated diagonal brace type UHPC external wall panel 1, and the horizontal distance thereof corresponds to the embedded bolt connector 7 in the frame beam 8. At this time, the prefabrication of the prefabricated diagonal brace type UHPC external wall panel 1 is completed.

[0048] Next, the vertical back plate, the middle partition plate 21, the stiffening rib plate and the horizontal bottom plate 33 are welded together, and then a waist-shaped hole 34 is opened in the middle of the first vertical back plate portion of the lower load-bearing area 3, and a U-shaped hole 43 is opened in the middle of the second vertical back plate portion of the upper limit area 4. The U-shaped hole is opened to the top and the hole diameter of the U-shaped hole 43 is slightly larger than the diameter of the embedded bolt. A circular through hole 35 corresponding to the L-shaped embedded bolt 71 is opened in the horizontal bottom plate 33. This completes the component manufacturing of the connector 2.

[0049] Then, add a pad 92 and a friction plate 91 to the first embedded bolt 51 of the upper part of the prefabricated diagonal brace type UHPC external wall panel 1 in sequence, and splice the lower load-bearing area 3 of the connector 2 through the waist-shaped hole 34, so that the bottom of the first embedded bolt 51 is close to the lower part of the waist-shaped hole 34 to achieve the load-bearing effect. Then add a friction plate 91 and a pad 92 in sequence, and finally tighten and fix them with the first nut, and apply the bolt preload to the predetermined value. This completes the installation of the shock-absorbing component 9 on the first embedded bolt 51.

[0050] Finally, after the preliminary preparations are completed, assembly can begin. Lift the prefabricated diagonal braced UHPC external wall panel 1 and adjust it to the corresponding floor height so that the circular through hole 35 of the horizontal bottom plate 33 of the connecting member 2 corresponds to the L-shaped embedded bolt 71 on the frame beam 8. Then assemble them from top to bottom and tighten them with the third nut 73. Before the corresponding splicing with the prefabricated diagonal brace type UHPC external wall panel below, add a pad and a friction plate to the second embedded bolt of the suspended prefabricated diagonal brace type UHPC external wall panel in turn, and then align the two embedded bolts at the bottom of the UHPC wall panel with the U-shaped hole of the upper limit area 4 of the connecting piece 2 corresponding to the prefabricated diagonal brace type UHPC external wall panel below, and make the second embedded bolt of the suspended prefabricated diagonal brace type UHPC external wall panel above the bottom position of the U-shaped hole so that it is not close to the bottom, and then add a friction plate and a pad in turn and tighten them with the corresponding nuts. Since the long hole is slightly larger than the diameter of the embedded bolt, it can achieve the effect of sliding up and down and left and right. Assemble other prefabricated diagonal brace type UHPC external wall panels in turn according to the above method.

[0051] Please refer to Figures 1 to 16, Embodiment 1 of the present invention is: a prefabricated diagonal brace type UHPC exterior wall panel 1, which includes a UHPC inner page panel 11, a UHPC inner diagonal brace 12 and a UHPC outer page panel 13 stacked in sequence, the UHPC inner page panel 11 is connected to the UHPC outer page panel 13 through the UHPC inner diagonal brace 12, and the UHPC inner page panel 11, the UHPC inner diagonal brace 12 and the UHPC outer page panel 13 can be an integrated structure made of UHPC. The UHPC inner diagonal brace 12 is provided with a plurality of hollow areas, and a thermal insulation board 14 is provided in the hollow area. The thermal insulation board 14 includes materials such as foamed ceramics, extruded polystyrene, and foamed cement. The UHPC inner diagonal brace 12 includes an outer peripheral portion 15 and an inner connecting portion 16 connected to each other, and the inner connecting portion 16 is arranged in an area surrounded by the outer peripheral portion 15. In practical applications, such as Figure 1 as well as Figure 5 As shown, the prefabricated diagonal brace type UHPC external wall panel 1 is rectangular in shape as a whole, and the UHPC inner page panel 11 and the UHPC outer page panel 13 are also rectangular in shape. The outer peripheral portion 15 in the UHPC inner diagonal brace 12 is a rectangular ring structure as a whole, and the inner connecting portion 16 is X-shaped as a whole. The inner connecting portion 16 includes two cross-connected straight plates, each of which connects two diagonal corners of the rectangular ring-shaped outer peripheral portion 15. It should be noted that the space enclosed by the outer peripheral portion 15 and the inner connecting portion 16 is the hollow area.

[0052] Correspondingly, another object of the invention is to provide an energy-absorbing assembled wall structure of a prefabricated diagonal brace type UHPC external wall panel, the energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panel comprises a connecting mechanism, a frame beam 8 and a plurality of prefabricated diagonal brace type UHPC external wall panels 1 as described above, two adjacent prefabricated diagonal brace type UHPC external wall panels 1 are detachably connected via the connecting mechanism, and the connecting mechanism comprises a connecting piece 2, embedded bolts and a shock absorbing assembly 9. Each prefabricated diagonal brace type UHPC external wall panel 1 is provided with four embedded bolts, and the four embedded bolts are arranged at the four corners of the prefabricated diagonal brace type UHPC external wall panel 1. Figure 3 As shown, the four embedded bolts include two first embedded bolts 51 and two second embedded bolts 61, wherein the two first embedded bolts 51 are arranged at the lower part of the prefabricated diagonal brace type UHPC external wall panel 1, and the two second embedded bolts 61 are arranged at the upper part of the prefabricated diagonal brace type UHPC external wall panel 1, and the four embedded bolts all extend in a direction away from the prefabricated diagonal brace type UHPC external wall panel 1.

[0053] In this embodiment, if Figure 8 , Fig.10 as well as Fig.11As shown, the connector 2 includes an upper limiting area 4 and a lower bearing area 3 connected to each other, and the upper limiting area 4 and the lower bearing area 3 are respectively detachably connected to two adjacent prefabricated diagonal brace type UHPC external wall panels 1. Assume that there is a prefabricated diagonal brace type UHPC external wall panel 1, that is, it includes a lower wall panel and an upper wall panel, wherein the lower bearing area 3 is detachably connected to the lower wall panel, and the upper limiting area 4 is detachably connected to the upper wall panel. Since the connector is detachably connected to the frame beam, when the connector is fixed to the frame beam, the lower wall panel can be hung and loaded through the lower bearing area of ​​the connector, and the upper wall panel can be limited through the upper limiting area of ​​the connector. The lower bearing area 3 includes a first vertical back plate portion 31, two first stiffening ribs 32 and a bottom plate 33, and the first vertical back plate portion 31 and the two first stiffening ribs 32 are both arranged on the bottom plate 33. Two stiffening ribs are arranged on the left and right sides of the first vertical back plate portion 31. The first vertical back plate portion 31 is provided with a waist-shaped hole 34. The end of the first embedded bolt 51 away from the prefabricated diagonal brace type UHPC external wall panel passes through the waist-shaped hole 34 and is detachably connected to the lower load-bearing area 3. At the same time, the upper limiting area 4 includes a second vertical back plate portion 41 and two second stiffening ribs 42. The two second stiffening ribs 42 are arranged on both sides of the second vertical back plate portion 41. The second vertical back plate portion 41 is provided with a U-shaped hole 43 with an opening away from the lower load-bearing area 3. The end of the second embedded bolt 61 away from the prefabricated diagonal brace type UHPC external wall panel passes through the U-shaped hole 34 and is detachably connected to the upper limiting area.

[0054] In this embodiment, if Fig.13 , Fig.14 as well as Fig.15As shown, in order to facilitate the connection of the connecting member 2 with the prefabricated diagonal brace type UHPC external wall panel 1 by embedded bolts, a plurality of embedded bolt assemblies can be correspondingly provided to detachably connect the connecting member 2 with the prefabricated diagonal brace type UHPC external wall panel 1. In this embodiment, the plurality of embedded bolt assemblies include a first embedded bolt assembly 5 and a second embedded bolt assembly 6. Among them, the first embedded bolt assembly 5 includes a first embedded steel plate, a first embedded bolt 51 and a first nut 52 connected in sequence, and the first embedded bolt 51 is threadedly connected with the first nut 52. Among them, the first embedded steel plate is embedded in the prefabricated diagonal brace type UHPC external wall panel 1, and the first embedded bolt 51 extends outward from the first embedded steel plate. One end of the first embedded bolt 51 away from the prefabricated diagonal brace type UHPC external wall panel 1 passes through the waist-shaped hole 34 and is detachably connected to the lower load-bearing area 3 through the first nut. The second embedded bolt assembly 6 includes a second embedded steel plate, a second embedded bolt 61 and a second nut 62 connected in sequence, and the second embedded bolt 61 is threadedly connected to the second nut 62. The second embedded steel plate is embedded in the prefabricated diagonal brace type UHPC external wall panel 1, and the second embedded bolt 61 extends outward from the second embedded steel plate. The two ends of the second embedded bolt 61 away from the prefabricated diagonal brace type UHPC external wall panel 1 pass through the U-shaped hole 43 and are detachably connected to the upper limiting area 4 through the second nut.

[0055] In this embodiment, if Fig.14 as well as Fig.15 As shown, in order to improve the seismic performance, two groups of shock-absorbing components 9 are sleeved on the first embedded bolt 51 and the second embedded bolt 61. It should be noted that the two groups of shock-absorbing components 9 are arranged in the same manner on the first embedded bolt and the second embedded bolt. For the first embedded bolt, one group of shock-absorbing components 9 is arranged between the prefabricated diagonal brace type UHPC external wall panel 1 and the connecting member 2, and the other group of shock-absorbing components 9 is arranged between the first nut 52 and the connecting member 2. For the second embedded screw, one group of shock-absorbing components 9 is arranged between the prefabricated diagonal brace type UHPC external wall panel 1 and the connecting member 2, and the other group of shock-absorbing components 9 is arranged between the second nut 62 and the connecting member 2. In each group of shock-absorbing components 9, a gasket 92 and a friction plate 91 are included, and the friction plates 91 in the two groups of shock-absorbing components 9 are both located on the side close to the connecting member 2.

[0056] In this embodiment, if Fig.16As shown, a frame beam 8 is provided on the prefabricated diagonal brace type UHPC external wall panel 1, and the frame beam 8 is located in the upper area of ​​the prefabricated diagonal brace type UHPC external wall panel 1. A frame beam embedded component is provided on the frame beam 8, and the frame beam embedded component includes an L-shaped embedded bolt 71 and a third embedded steel plate 72. The third embedded steel plate 72 is embedded in the frame beam 8, and the embedded steel plate is provided with screw holes. Some of the L-shaped embedded bolts 71 are set in the frame beam 8, and some of the L-shaped embedded bolts 71 extend upward. Correspondingly, in order to set the connecting member 2 on the frame beam 8, two circular through holes 35 are provided on the bottom plate 33 of the connecting member 2, and the through holes 35 are used for the L-shaped embedded bolts 71 to pass through, so as to clamp the connecting member 2 on the frame beam 8 through corresponding nuts.

[0057] In summary, the prefabricated diagonal brace type UHPC external wall panel and its energy-absorbing assembled wall structure provided by the present invention are as follows: (1) The connection of several supports in the present invention is of the upper bearing type, the center of the wall panel is below the support point, and it will not overturn outward, eliminating the diagonal brace for on-site fixing, and the construction is safer and more convenient. (2) The traditional main structure needs to pre-embed 4 node connectors 2 for each layer and each board, and the pre-embedded positioning requirements are high. The embedded parts are easily displaced with the vibration of the concrete, resulting in installation difficulties. The connectors in the present invention are integrated with load-bearing and limiter, and only two connectors need to be pre-embedded, which reduces the pre-embedded positioning requirements and installation difficulty. (3) The traditional node requires the wall panel to be buckled into the embedded connector from the outside to the inside, and the positioning height requirements of the wall panel are very strict, which makes the construction more difficult. The present invention requires the wall panel to be buckled from top to bottom, which is simple to operate. (4) The present invention utilizes the deformation between the wall panel and the main structure under the action of the earthquake, and by controlling the bolt preload and the friction coefficient of the friction plate, the damping force of the friction damper can be changed, and the damping force is used to consume the earthquake input energy and improve the seismic performance of the structure. (5) The deadweight of the prefabricated diagonal brace UHPC external wall panel is transferred to the main structure through the connecting parts from the two first embedded bolt support points on the upper part. The two second embedded bolts on the lower part of the prefabricated diagonal brace UHPC external wall panel are inserted into the U-shaped hole in the upper limiting area of ​​the lower connecting part. The second embedded bolts maintain a certain distance from the hole wall below the U-shaped hole. Therefore, they do not bear the deadweight of the prefabricated diagonal brace UHPC external wall panel, but only limit the out-of-plane movement of the prefabricated diagonal brace UHPC external wall panel and the friction energy consumption under the action of earthquake. (6) The coordinated work of the inner and outer leaf wall panels is achieved through the UHPC internal diagonal brace, eliminating the configuration of traditional wall panel connectors and steel mesh, thereby significantly simplifying the wall panel structure, achieving one-time casting and greatly reducing the difficulty of construction.

[0058] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A prefabricated diagonal braced UHPC exterior wall panel, characterized in that: The invention comprises a UHPC inner page plate, an inner partition layer and a UHPC outer page plate which are stacked in sequence, wherein the inner partition layer comprises a UHPC inner diagonal brace and a thermal insulation board, the UHPC inner page plate is connected to the UHPC outer page plate through the UHPC inner diagonal brace, a plurality of hollow areas are opened on the UHPC inner diagonal brace, and the thermal insulation board is located in the hollow areas.

2. The prefabricated diagonal braced UHPC exterior wall panel according to claim 1 is characterized in that: The UHPC inner diagonal brace includes an outer peripheral portion and an inner connecting portion connected to each other, wherein the inner connecting portion is arranged in a region surrounded by the outer peripheral portion.

3. An energy-dissipating assembled wall structure of prefabricated diagonal braced UHPC external wall panels, characterized in that: The energy-absorbing assembled wall structure of the prefabricated diagonal brace type UHPC external wall panels comprises a connecting mechanism and a plurality of prefabricated diagonal brace type UHPC external wall panels according to any one of claims 1 to 2, wherein two adjacent prefabricated diagonal brace type UHPC external wall panels are detachably connected via the connecting mechanism, wherein the connecting mechanism comprises a connecting member, wherein the connecting member comprises an upper limiting area and a lower load-bearing area connected to each other, wherein the upper limiting area and the lower load-bearing area are detachably connected to two adjacent prefabricated diagonal brace type UHPC external wall panels, respectively.

4. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wallboard according to claim 3 is characterized in that: The lower load-bearing area includes a bottom plate and a first vertical back plate portion arranged on the bottom plate, a waist-shaped hole is arranged on the first vertical back plate portion, and a through hole is arranged on the bottom plate.

5. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wall panels according to claim 4 is characterized in that: The upper limiting area includes a second vertical back plate portion, which is connected to a section of the first vertical back plate portion away from the bottom plate, and the second vertical back plate portion is provided with a U-shaped hole, and the U-shaped hole opens toward an end away from the lower load-bearing area.

6. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wall panels according to claim 5 is characterized in that: The connecting mechanism includes a first embedded bolt assembly, which includes a first embedded steel plate, a first embedded bolt and a first nut connected in sequence, wherein the first embedded steel plate is arranged in the prefabricated diagonal brace type UHPC external wall panel, the first embedded bolt extends outward from the first embedded steel plate, and one end of the first embedded bolt away from the prefabricated diagonal brace type UHPC external wall panel passes through the waist-shaped hole and is detachably connected to the lower load-bearing area through the first nut.

7. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wallboard according to claim 5 is characterized in that: The connecting mechanism includes a second embedded bolt assembly, which includes a second embedded steel plate, a second embedded bolt and a second nut connected in sequence, wherein the second embedded steel plate is arranged in the prefabricated diagonal brace type UHPC external wall panel, the second embedded bolt extends outward from the second embedded steel plate, and one end of the second embedded bolt away from the prefabricated diagonal brace type UHPC external wall panel passes through the U-shaped hole and is detachably connected to the upper limiting area through the second nut.

8. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC exterior wallboard according to claim 6 is characterized in that: The connecting mechanism also includes a shock-absorbing assembly. Two groups of shock-absorbing assemblies are sleeved on the first embedded bolt, one group of shock-absorbing assemblies is arranged between the prefabricated diagonal brace type UHPC external wall panel and the connecting piece, and the other group of shock-absorbing assemblies is arranged between the first nut and the connecting piece.

9. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC exterior wallboard according to claim 8 is characterized in that: The shock absorbing assembly comprises a pad and a friction plate, and the friction plates in the two groups of shock absorbing assemblies are both located on a side close to the connecting member.

10. The energy-dissipating assembled wall structure of the prefabricated diagonal braced UHPC external wall panels according to claim 5, characterized in that: It also includes a bolt connector and a frame beam, the bolt connector includes a third embedded steel plate and L-shaped embedded bolts connected to each other, the third embedded steel plate is arranged in the frame beam, at least part of the L-shaped embedded bolts is arranged in the frame beam, and at least part of the L-shaped embedded bolts extends out of the frame beam to be detachably connected to the connector.

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