A building facade that is easy to install

Abstract

The utility model relates to prefabricated building technical field especially, a kind of building outer wall of convenient installation, its technical scheme includes: wall, the wall is equipped with connecting piece, connecting piece is used to realize the connection of wall and building main body or adjacent wall, the front and back of wall one side are equipped with first reserved hole, the front and back of wall other side are equipped with second reserved hole;The wall side is equipped with lug and recess for splicing, the cavity is spaced apart and arranged in the wall, the wall top is equipped with with the grouting groove of cavity intercommunication;Longitudinal reinforcement is arranged in the wall outside the cavity, adjacent longitudinal reinforcement is connected by first hoop and second hoop, longitudinal reinforcement at lug and longitudinal reinforcement of wall main body portion are connected by tie bar.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically to a building exterior wall that is easy to install. Background Technology

[0002] With the continuous advancement of industrialized construction, prefabricated buildings have been widely used in the construction field due to their advantages such as high construction efficiency and easy quality control. As an important component of prefabricated buildings, the ease of installation, structural stability, and thermal insulation performance of building exterior walls directly affect the overall quality and usability of the building.

[0003] Currently, prefabricated walls are mostly constructed by prefabrication followed by on-site hoisting and assembly. To meet the strength requirements of the building structure, the walls often have a considerable weight, which places high demands on the load-bearing capacity of the hoisting equipment. Meanwhile, the thermal insulation performance of exterior walls is crucial for building energy conservation. While various existing exterior wall insulation methods exist, the problem of insulation layer detachment leading to a decline in insulation performance is prominent and urgently needs improvement.

[0004] Therefore, a building exterior wall that is easy to install is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a building exterior wall that is easy to install, with the advantages of effective weight reduction and good integration of the insulation layer with the wall. It solves the problems of low hoisting and installation efficiency and easy detachment of the insulation layer caused by the heavy weight of traditional prefabricated building exterior walls.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building exterior wall that is easy to install, comprising a wall body, wherein the wall body is provided with connectors for connecting the wall body to the main building body or adjacent walls; the front and back sides of one side of the wall body are provided with first reserved holes, and the front and back sides of the other side of the wall body are provided with second reserved holes; the side of the wall body is provided with protrusions and grooves for splicing; the interior of the wall body is provided with cavities spaced apart; the top of the wall body is provided with a grouting groove communicating with the cavities; longitudinal steel bars are arranged in the wall body outside the cavities; adjacent longitudinal steel bars are connected by first and second hoops; the longitudinal steel bars at the protrusions are connected to the longitudinal steel bars of the main wall body by tie bars.

[0007] Preferably, the connector includes a node steel plate and expansion bolts, the expansion bolts passing through the node steel plate and anchored into a first or second reserved hole; the node steel plate is made of high-strength alloy steel plate; the expansion bolts are seismic resistant and are spaced apart along the length of the node steel plate to meet connection requirements.

[0008] In the design, the connectors include node steel plates and expansion bolts. The expansion bolts pass through the node steel plates and are anchored into the first or second reserved holes, realizing a stable connection between the wall and the main building or adjacent walls. The node steel plates are made of high-strength alloy steel plates, which have sufficient structural strength to withstand the connection stress. The expansion bolts are seismic resistant and are arranged at intervals along the length of the node steel plates. The distribution method adapted to the connection requirements improves the seismic performance of the overall connection.

[0009] Preferably, the mating surfaces of the protrusion and the groove are provided with elastic sealing gaskets to achieve precise alignment and initially seal gaps during splicing.

[0010] In the design, the mating surfaces of the protrusions and grooves are equipped with elastic sealing gaskets, which enables precise alignment when adjacent walls are spliced. The elastic sealing gaskets have good elasticity and sealing performance, and the method of setting them to fit the mating surfaces can initially seal the splicing gaps.

[0011] Preferably, the grouting groove is located on the inner wall side at the top of the wall and is used to inject insulation material into the cavity to fill the cavity.

[0012] In the design, the grouting groove is located on the inner wall side at the top of the wall, which realizes the directional injection of insulation material into the cavity; the structure that connects the grouting groove and the cavity has the function of guiding the flow of insulation material, and the location on the inner wall side facilitates the operation of filling the cavity during construction.

[0013] Preferably, the first clamp is made of galvanized flat steel and surrounds the longitudinal reinforcing bars of the cavity to achieve connection; the second clamp is a shaped steel clamp and surrounds the longitudinal reinforcing bars of the adjacent cavity to achieve connection.

[0014] In the design, the first hoop and the second hoop are respectively connected to the adjacent longitudinal bars, realizing the regularity and fixation of the longitudinal bars on the outside of the cavity; the first hoop is made of galvanized flat steel with rust prevention and fastening performance, and the second hoop is a shaped steel clamp with the feature of convenient installation. The two adopt the connection method of wrapping around the corresponding longitudinal bars to enhance the integrity of the steel structure.

[0015] Preferably, the tie rod is a low-relaxation prestressed tendon, and its two ends are connected to the longitudinal steel bars at the protrusion and the main body of the wall by binding wire.

[0016] In the design, the longitudinal steel bars at the protrusion are connected to the longitudinal steel bars of the main wall, realizing the mechanical transmission between the protrusion and the main wall structure at the steel bar level; the tie bars are made of low-relaxation prestressed tendons with stable stress performance, and the connection method of binding with wire can ensure reliable connection with the longitudinal steel bars at both ends.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model reduces the amount of concrete used in the wall by setting up cavities that are spaced inside the wall, thus achieving an effective weight reduction effect. This reduces the load requirements of the crane during hoisting and improves the problem of low hoisting and installation efficiency caused by the heavy weight of traditional prefabricated building exterior walls.

[0019] Meanwhile, by setting up a grouting groove connected to the cavity, insulation material can be injected into the cavity. The insulation material fills the cavity inside the wall and forms an integral whole with the wall, achieving a good integration effect between the insulation layer and the wall, and avoiding the problem of easy detachment of traditional external wall insulation layers after later adhesion.

[0020] In addition, the first reserved holes on the front and back of one side of the wall and the second reserved holes on the front and back of the other side are connected with connectors. The protrusions and grooves on the side facilitate splicing. The longitudinal steel bars on the outside of the cavity are connected by the first hoop and the second hoop. The longitudinal steel bars at the protrusions are connected to the longitudinal steel bars of the main body of the wall by tie bars. While reducing weight and improving the integration of the insulation layer, the structural stability of the wall is ensured, further improving the ease of installation and the reliability of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the connection structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the reinforcement structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connecting component structure of this utility model.

[0025] In the diagram: 1. Wall; 101. First reserved hole; 102. Second reserved hole; 11. Protrusion; 12. Groove; 13. Grouting groove; 14. Cavity; 15. Longitudinal reinforcement; 151. First hoop; 152. Second hoop; 153. Tie bar; 2. Connector; 21. Node steel plate; 22. Expansion bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one embodiment of this utility model is provided: a building exterior wall that is easy to install, including a wall body 1 and a connector 2.

[0029] The wall 1 is precast from ordinary concrete. On one side of the wall 1, both the front and back sides have first reserved holes 101; on the other side of the wall 1, both the front and back sides have second reserved holes 102. The first and second reserved holes 101 and 102 are arranged vertically and equidistantly. The diameter of the holes is matched to the nominal diameter of the expansion bolts 22, specifically for anchoring the expansion bolts 22 in the connector 2. This provides a stable anchoring channel for the connection between the wall 1 and the building structure or adjacent walls 1. Compared to the traditional method of drilling holes on-site for wall connections, precast reserved holes reduce on-site work time and improve installation efficiency. The side of the wall 1 is integrally formed with protrusions 11 and grooves 12 for splicing. The cross-sectional dimensions of the protrusions 11 and the groove dimensions of the grooves 12 are matched with a clearance. The mating surfaces of the protrusions 11 and the grooves 12 are provided with elastic sealing gaskets with a thickness of 3-5mm. The sealing gaskets are made of EPDM rubber. During splicing, the mechanical cooperation between the protrusions 11 and the grooves 12 can achieve precise alignment, and the elastic deformation of the sealing gaskets can initially seal the gaps, reducing the amount of filling material used later.

[0030] The wall 1 is internally divided into cavities 14, each with a rectangular cross-section, extending along the height of the wall 1. The spacing between adjacent cavities 14 is 300-500mm. This cavity 14 design reduces concrete usage by 20%-30%, significantly lowering the self-weight of the wall 1. Longitudinal reinforcing bars 15 are installed inside the wall 1 outside the cavities 14. These longitudinal reinforcing bars 15 are HRB400E ribbed seismic steel bars with a diameter of 12-16mm and a spacing of 150-200mm. Both the first clamp 151 and the second clamp 152 are used to connect adjacent longitudinal reinforcing bars 15. The first clamp 151 is made of galvanized flat steel with a thickness of 3-4mm and a width of 30-40mm. After wrapping around the longitudinal reinforcing bars 15 of the cavity 14, it is fixed by binding with No. 16 galvanized wire, with the binding point spacing not exceeding 50mm. The second clamp 152 is a shaped steel clamp made of Q235 steel. After wrapping around the longitudinal reinforcing bars 15 on the outside of the adjacent cavity 14, it is also fixed by binding with No. 16 galvanized wire to ensure a tight connection with the longitudinal reinforcing bars 15. Tie bar 153 is used to connect the longitudinal steel bar 15 at the protrusion 11 with the longitudinal steel bar 15 of the main body of the wall 1. Tie bar 153 is a low-relaxation prestressed tendon with a diameter of 8mm. Its two ends are tied to the longitudinal steel bar 15 at the protrusion 11 and the main body of the wall 1 with double strand No. 16 galvanized iron wire, with a binding length of not less than 100mm. In this way, the force of the protrusion 11 is transferred to the main body of the wall 1, enhancing the connection strength between the protrusion 11 and the main body of the wall 1, and improving the stability and crack resistance of the protrusion 11 structure on the wall 1.

[0031] A grouting groove 13 is provided on the inner wall side at the top of wall 1. The cross-section of the grouting groove 13 is an inverted trapezoid, with an upper opening width of 80-100mm and a depth of 50-60mm. The grouting groove 13 is connected to the cavity 14, and a connecting hole with a diameter of 20-30mm is provided at the bottom of the groove for injecting insulation material. Specifically, after wall 1 is installed, foamed polyurethane insulation material is injected into the grouting groove 13 at a pressure of 0.3-0.5MPa using a grouting pump. The material flows into the cavity 14 through the connecting hole and fills the entire cavity. After curing, it forms an integral insulation structure with wall 1. Compared with the traditional method of applying an external insulation layer to the exterior wall, this avoids the risk of the insulation layer peeling off from the base layer. After grouting is completed, the grouting groove 13 is sealed with dry-hardened mortar of the same strength grade.

[0032] The connector 2 includes a node steel plate 21 and expansion bolts 22. The node steel plate 21 is made of Q355 high-strength alloy steel plate with a thickness of 8-10mm, which is CNC cut, ground and galvanized for rust prevention. The length of the steel plate is set to 300-600mm and the width is 100-150mm according to the connection requirements. The expansion bolts 22 are M12-M16 seismic-resistant self-cutting expansion bolts, which can be adapted to different base materials such as concrete and masonry. The effective anchorage depth of the bolts is not less than 100mm. Expansion bolts 22 are arranged at intervals along the length of the node steel plate 21, with a spacing of 150-200mm. In use, the expansion bolts 22 are passed through the pre-set bolt holes on the node steel plate 21 and then anchored into the first reserved hole 101 or the second reserved hole 102 in the wall 1. The expansion sleeve is expanded by tightening the bolts with a wrench, which can fix the node steel plate 21 to the connection part of the main building structure or adjacent wall 1, realizing the rigid connection between the wall 1 and other structures. The pull-out bearing capacity of this connection method is increased by more than 40% compared with the traditional ordinary expansion bolts.

[0033] The building's exterior wall, through the precise splicing structure of prefabricated wall 1, high-strength reinforcement system, and suitable connectors 2, effectively solves the problems of low installation efficiency, insufficient splicing strength, and decreased thermal insulation performance due to structural deformation or insulation layer adhesion failure during use. Its innovation lies in: achieving rapid connection through the cooperation of the first reserved hole 101, the second reserved hole 102, and the connector 2; combining the splicing of protrusions 11 and grooves 12 with the weight-reducing design of the cavity 14, improving installation convenience while ensuring structural strength; and injecting insulation material into the internal cavity 14 of the wall 1 to form an integrated insulation structure, fundamentally solving the problem of insulation layer detachment.

[0034] In practical use, this invention first uses a crane to lift the wall 1 with steel wire rope. The initial splicing of adjacent wall 1 is completed by the cooperation of the protrusion 11 and the groove 12, at which time the elastic sealing gasket fills the tiny gaps in real time. For adjacent wall 1, or the connection between wall 1 and the main building structure, after accurately placing the node steel plate 21, the seismic expansion bolt 22 is screwed into the first pre-drilled hole 101 or the second pre-drilled hole 102, thus completing the splicing and installation of adjacent wall 1. Then, high-efficiency thermal insulation material is injected into the cavity 14 under high pressure through the grouting groove 13. After the thermal insulation material fills the cavity 14 and solidifies, it forms an insulation layer for the wall 1. Compared to the traditional method of later pasting insulation material onto the outer layer of the exterior wall, this structure provides better integration between the insulation layer and the wall 1, effectively avoiding the risk of insulation layer detachment.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A building exterior wall that is easy to install, comprising a wall body (1), wherein the wall body (1) is provided with a connector (2), the connector (2) being used to connect the wall body (1) to the main body of the building or an adjacent wall body (1), characterized in that: The wall (1) has a first reserved hole (101) on the front and back sides of one side, and a second reserved hole (102) on the front and back sides of the other side; the wall (1) has a protrusion (11) and a groove (12) for splicing on the side, and a cavity (14) is provided in the interior of the wall (1) at intervals. The top of the wall (1) has a grouting groove (13) communicating with the cavity (14); the wall (1) outside the cavity (14) is provided with longitudinal steel bars (15), and adjacent longitudinal steel bars (15) are connected by a first hoop (151) and a second hoop (152). The longitudinal steel bars (15) at the protrusion (11) are connected to the longitudinal steel bars (15) of the main body of the wall (1) by tie bars (153).

2. A building facade according to claim 1, wherein, The connector (2) includes a node steel plate (21) and an expansion bolt (22). The expansion bolt (22) passes through the node steel plate (21) and is anchored into the first reserved hole (101) or the second reserved hole (102). The node steel plate (21) is made of high-strength alloy steel plate. The expansion bolt (22) is seismic resistant and is arranged at intervals along the length of the node steel plate (21) to meet the connection requirements.

3. A building facade of claim 1, wherein, The mating surfaces of the protrusion (11) and the groove (12) are provided with elastic sealing gaskets, which are used to achieve precise alignment and initially seal the gaps during splicing.

4. A building facade of claim 1, wherein, The grouting groove (13) is located on the inner wall side of the top of the wall (1) and is used to inject insulation material into the cavity (14) to fill the cavity (14).

5. A building facade of claim 1, wherein, The first clamp (151) is made of galvanized flat steel and surrounds the longitudinal steel bars (15) of the cavity (14) to achieve connection; the second clamp (152) is a fixed steel clamp and surrounds the longitudinal steel bars (15) on the outside of the adjacent cavity (14) to achieve connection.

6. A building facade of claim 1, wherein, The tie bar (153) is a low-relaxation prestressed tendon, and its two ends are connected to the longitudinal steel bars (15) at the protrusion (11) and the main body of the wall (1) by binding wire.

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