A prefabricated exterior wall panel installation and connection structure and installation and connection method thereof

Abstract

The invention discloses an installation connection structure and an installation connection method of a prefabricated exterior wall panel. The prefabricated exterior wall panel and the structural frame beam are respectively provided with steel brackets. The steel brackets are fixed by bolt connection, fine-tuning correction and first twisting and then steeling process so that the prefabricated exterior wall panel is permanently fixed on the structural frame beam after installation. The invention is simple, safe, convenient, stable and firm in connection.

Description

Technical Field

[0001] The invention relates to an installation and connection structure of a prefabricated exterior wall panel and an installation and connection method thereof. Background Art

[0002] Prefabricated buildings meet the requirements of building industrialization and green environmental protection, especially my country's industrial policies on green buildings and building industrialization, which have led to an increasing demand for prefabricated buildings. Prefabricated wall panels are one of the main contents of prefabricated buildings.

[0003] However, the integral prefabricated exterior wall panels are large in size and heavy in weight, which puts forward new requirements for the stability and firmness of the connection installation, especially the need for a simple and reliable installation structure that can overcome and eliminate the accumulated errors caused by multiple construction processes. The existing prefabricated exterior wall panel installation generally requires the erection of scaffolding, which is not only time-consuming and labor-intensive, greatly increases the manpower and financial costs, but also poses safety hazards. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides an installation and connection structure of a prefabricated exterior wall panel and an installation and connection method thereof.

[0005] The present invention can be implemented through the following technical solutions:

[0006] A prefabricated exterior wall panel installation connection structure, the prefabricated exterior wall panel and the structural frame beam are respectively provided with steel brackets, and the steel brackets are fixed by bolt connection, fine-tuning and correction, and the process of first twisting and then steeling so that the prefabricated exterior wall panel is permanently fixed on the structural frame beam after installation.

[0007] Furthermore, the prefabricated exterior wall panel and the structural frame beam have four connection and fixing points, which are two connection and fixing points at the lower side and two connection and fixing points at the upper side of the back side of the prefabricated exterior wall panel.

[0008] Furthermore, the four connection fixing points are the connection plates of the four steel corbels arranged on the prefabricated exterior wall panels and the four steel corbels arranged on the structural frame beams, which are overlapped correspondingly and then fastened and fixed with connecting bolts and nuts, adding adjustment steel sheets.

[0009] Furthermore, the connecting plates of the two overlapping steel corbels are respectively provided with waist-shaped holes, and the two waist-shaped holes are cross-intersected when overlapping. The connecting bolts are passed through the cross holes of the two waist-shaped holes and then tightened and fixed with nuts after adding adjustment steel sheets.

[0010] Furthermore, the waist-shaped hole has a length of 90-100 mm and a width of 32 mm.

[0011] Furthermore, it also includes positioning fine-tuning bolts and nuts, which are arranged on the steel corbel connecting plates respectively provided on the prefabricated exterior wall panels and the structural frame beams to adjust the verticality or horizontality of the prefabricated exterior wall panels relative to the ground.

[0012] Furthermore, the positioning fine-adjustment bolts and their nuts are in two sets, which are respectively arranged at two connection and fixing points on the lower side of the back side of the prefabricated exterior wall panel. Specifically, the positioning fine-adjustment bolts respectively pass through the connecting plates of the steel corbels welded on the prefabricated exterior wall panels. When the positioning fine-adjustment bolts rotate, the bolt ends thereof support the connecting plates of the steel corbels welded on the structural frame beams.

[0013] Furthermore, the steel corbel is a right-angled triangular plate steel corbel.

[0014] Furthermore, there are two M24 bolts at two connection and fixing points on the upper side of the back side of the prefabricated exterior wall panel, which connect and fix the steel corbel to the prefabricated exterior wall panel to prevent the prefabricated exterior wall panel from overturning.

[0015] The present invention also discloses an installation and connection method implemented by the installation and connection structure of the prefabricated exterior wall panel described above, comprising the following steps:

[0016] 1) Preliminarily position the prefabricated exterior wall panels at the corresponding structural frame beam positions according to the requirements of the front-to-back, left-to-right and verticality of the prefabricated exterior wall panels;

[0017] 2) The four connection fixing points are respectively connected by the connection bolts into the cross holes of the waist-shaped holes after the hoisting is completed, the prefabricated exterior wall panels are initially positioned, and the adjustment steel sheets are inserted and initially tightened with nuts;

[0018] 3) Adjust the two positioning fine-tuning bolts on the lower back side of the prefabricated exterior wall panel to fine-tune the verticality or horizontality of the prefabricated exterior wall panel;

[0019] 4) After fine-tuning the positioning, tighten all four connecting bolts of the prefabricated exterior wall panel;

[0020] 5) Left and right triangular adjustable diagonal braces are arranged on the inner side of the prefabricated exterior wall panels to support the structural floor slab;

[0021] 6) Repeat steps 1)-5) twice to complete the installation of the prefabricated exterior wall panels of the two layers above the current structure;

[0022] 7) This layer implements the process of first twisting and then steeling, that is, all the bolt connections completed in the previous process are welded according to the design requirements, and the connection of this layer corresponds to the connection of the steel corbel connecting plate, including the junction of the adjustment steel sheet and the steel corbel connecting plate. All the connections between the bolts and nuts and the steel corbel connecting plate are fully welded to form a connected whole, and the installation is completed;

[0023] 8) After the installation of the upper prefabricated exterior wall panels is completed for every two layers, the twisting-first-steeling-later process of step 7) below the two layers can be welded.

[0024] Beneficial Effects

[0025] Due to the adoption of the above technical scheme, the present invention can make the connection simple and convenient. Through the cross-arranged waist-shaped holes, the prefabricated exterior wall panels can be provided with room for movement when the structural frame beam is installed and positioned, so as to meet the correct positioning of the exterior wall panels, and at the same time eliminate the accumulated errors caused by multiple processes in the installation and construction of the prefabricated exterior wall panels and the structural frame beams. The lifting and lowering of the micro-positioning and fine-tuning bolts can also generate a supporting force on the connecting plate of the steel corbels arranged on the structural frame beam, and the verticality of the prefabricated exterior wall panels can be fine-tuned to further improve the installation accuracy of the prefabricated exterior wall panels. The cross-intersecting holes connecting the steel corbels can meet the smooth installation of the prefabricated exterior wall. The prefabricated exterior wall panels adopt the connection method of "hinge first and then steel", that is, after the bolts for the precise positioning of the installation of the prefabricated exterior wall panels are finally tightened (hinged connection), the bolts are used to weld the upper and lower steel corbel connecting plates, and the weld height is 10mm to ensure the safety and firmness of the structural bolt connection. The present invention is simple to install, saves time and effort, and has safe installation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the installation structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the connection node structure at the lower side of the prefabricated exterior wall panel;

[0028] Figure 2-1 for Figure 2 A cross-sectional view of a steel corbel connecting plate welded to a prefabricated exterior wall panel;

[0029] Figure 2-2 for Figure 2 A cross-sectional view of a steel corbel connection plate welded to a structural frame beam;

[0030] Figure 2-3 for Figure 2 A cross-sectional view of the two connecting plates when they overlap;

[0031] Figure 3 This is a schematic diagram of the connection node structure at the upper side of the prefabricated exterior wall panel of the present invention;

[0032] Figure 3-1 for Figure 3 A cross-sectional view of a steel corbel connecting plate welded to a prefabricated exterior wall panel;

[0033] Figure 3-2 for Figure 3 A cross-sectional view of a steel corbel connection plate welded to a structural frame beam;

[0034] Figure 3-3for Figure 3 Cross-sectional view of the two connecting plates when they overlap.

[0035] In the figure, 1, prefabricated exterior wall panel; 2, positioning fine-tuning bolt; 3, connecting bolt; 4, embedded parts; 5, steel corbel connecting plate welded to the prefabricated exterior wall panel; 6, steel corbel connecting plate welded to the structural frame beam; 7, M24 bolt DETAILED DESCRIPTION

[0036] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0037] like Figure 1 , 2 As shown, a mounting and connecting structure of a prefabricated exterior wall panel of the present invention, the prefabricated exterior wall panel 1 and the structural frame beam are respectively provided with steel corbels, and the steel corbels are fixed by adopting bolt connection, fine-tuning correction and the process of twisting first and then steeling so that the prefabricated exterior wall panel is permanently fixed on the structural frame beam after installation.

[0038] There are 4 connection and fixing points between the prefabricated exterior wall panel and the structural frame beam, which are 2 connection and fixing points at the lower side and the upper side of the back of the prefabricated exterior wall panel 1 (wherein, Figure 2 This is a schematic diagram of the connection node structure at the lower side of the prefabricated exterior wall panel. Figure 3 The figure is a schematic diagram of the connection node structure at the upper position of the prefabricated exterior wall panel of the present invention. The four connection fixing points are four steel corbel connection plates 5 arranged on the prefabricated exterior wall panel 1 and four steel corbel connection plates 6 arranged on the structural frame beam, which are overlapped with each other and then tightened with connection bolts 3 and nuts after adding adjustment steel sheets. When the prefabricated exterior wall panel is moved during installation positioning, the cross-shaped waist-shaped holes always provide a position for a bolt hole (wherein, the length of the waist-shaped hole is 90-100mm, the width is 32mm, the diameter of the connection bolt is 30mm, and the width of the waist-shaped hole is 2mm larger than the diameter of the connection bolt). When the prefabricated exterior wall panel is hoisted to the required positioning position, the cross-shaped waist-shaped holes can provide the final connection position of the bolt. After the four connection bolts are inserted, the hoisting of the prefabricated exterior wall is preliminarily completed, thereby eliminating the accumulated errors caused by multiple processes in the installation of steel corbels during the construction of prefabricated exterior wall panels and structures. (Among them, there are four connection and fixing points, and corresponding embedded parts 4 are provided in the structural frame beam and the prefabricated exterior wall panel, and the steel brackets are welded to the embedded parts 4 respectively.) Figure 2-1 It is a cross-sectional view of the steel corbel connection plate welded on the prefabricated exterior wall panel at the two connection fixing points on the lower side of the prefabricated exterior wall panel; Figure 2-2 It is a cross-sectional view of the steel corbel connection plate welded to the structural frame beam at the two connection fixing points on the lower side of the prefabricated exterior wall panel; Figure 2-3It is a cross-sectional view of the two connection fixing points at the lower side of the prefabricated exterior wall panel when the two connection panels overlap; Figure 3-1 It is a cross-sectional view of a steel corbel connecting plate welded on a prefabricated exterior wall panel at two connecting and fixing points on the upper side of the prefabricated exterior wall panel of the present invention; Figure 3-2 It is a cross-sectional view of a steel corbel connecting plate welded on a structural frame beam at two connecting and fixing points at the upper side of the prefabricated exterior wall panel of the present invention; Figure 3-3 This is a cross-sectional view of two connection panels overlapping at two connection fixing points on the upper side of the prefabricated exterior wall panel of the present invention.

[0039] Among them, waist-shaped holes are respectively provided on the connecting plates of the two overlapping steel corbels. After overlapping and installation positioning, the two waist-shaped holes are cross-set to determine the bolt hole position. The connecting bolt 3 passes through the two waist-shaped holes and is moved after lifting positioning to determine the cross hole. The fixing nut is installed, and the nut is tightened and fixed after the adjustment steel sheet is inserted between the connecting corbels.

[0040] It also includes positioning fine-tuning bolts 2 and nuts, which are arranged on the steel corbel connecting plates respectively provided on the prefabricated exterior wall panels 1 and the structural frame beams. When the connection gap of the steel corbels is compacted and stabilized after the prefabricated wall panels are installed, the positioning fine-tuning bolts can fine-tune the verticality or horizontality of the prefabricated exterior wall panels.

[0041] Among them, there are two sets of positioning fine-tuning bolts and their nuts, which are respectively arranged at two connection and fixing points on the lower side of the back side of the prefabricated exterior wall panel. Specifically, the positioning fine-tuning bolts 2 pass through the connecting plates 5 of the steel corbels welded on the prefabricated exterior wall panels. When the positioning fine-tuning bolts 2 rotate, their bolt ends press against the connecting plates 6 of the steel corbels welded on the structural frame beams, thereby achieving the effect of fine-tuning the verticality or horizontality.

[0042] Among them, the steel corbel of the present invention is a right-angle triangle plate steel corbel, one right-angle side of the steel corbel is welded to the prefabricated exterior wall panel and the embedded steel plate on the structural frame beam, and the other right-angle side is a connecting plate with a waist-shaped hole.

[0043] Among them, there are two M24 bolts 7 at the two connection and fixing points on the upper side of the back of the prefabricated exterior wall panel, which connect and fix the steel corbel to the prefabricated exterior wall panel 1 to prevent the prefabricated exterior wall panel from overturning.

[0044] The present invention also discloses an installation and connection method implemented by the installation and connection structure of the prefabricated exterior wall panel described above, comprising the following steps:

[0045] 1) Preliminarily position the prefabricated exterior wall panels at the corresponding structural frame beam positions according to the requirements of the front-to-back, left-to-right and verticality of the prefabricated exterior wall panels;

[0046] 2) The four connection fixing points are respectively connected by the connection bolts into the cross holes of the waist-shaped holes after the hoisting is completed, the prefabricated exterior wall panels are initially positioned, and the adjustment steel sheets are inserted and initially tightened with nuts;

[0047] 3) Adjust the two positioning fine-tuning bolts on the lower back side of the prefabricated exterior wall panel to fine-tune the verticality or horizontality of the prefabricated exterior wall panel;

[0048] 4) After fine-tuning the positioning, tighten all four connecting bolts of the prefabricated exterior wall panel;

[0049] 5) Left and right triangular adjustable diagonal braces are arranged on the inner side of the prefabricated exterior wall panels to support the structural floor slab;

[0050] 6) Repeat steps 1)-5) twice to complete the installation of the prefabricated exterior wall panels of the two layers above the current structure;

[0051] 7) This layer implements the process of first twisting and then steeling, that is, all the bolt connections completed in the previous process are welded according to the design requirements, and the connection of this layer corresponds to the connection of the steel corbel connecting plate, including the junction of the adjustment steel sheet and the steel corbel connecting plate. All the connections between the bolts and nuts and the steel corbel connecting plate are fully welded to form a connected whole, and the installation is completed;

[0052] 8) After the installation of the upper prefabricated exterior wall panels is completed for every two layers, the twisting-first-steeling-later process of step 7) below the two layers can be welded.

[0053] The prefabricated exterior wall panels of the present invention adopt a connection process of "hinging first and then steeling", that is, after the precisely positioned bolts installed in the prefabricated exterior wall panels are finally tightened (hinged connection), the bolts are used to weld the upper and lower steel bracket connection plates together, and the weld height is 10 mm to ensure permanent fixation of the structural bolt connection.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated exterior wall panel installation and connection structure, characterized in that: The prefabricated exterior wall panels and the structural frame beams are respectively provided with steel brackets. Through bolt connection, fine-tuning and correction, and the process of twisting first and then steeling, the steel brackets are fixed so that the prefabricated exterior wall panels are permanently fixed on the structural frame beams after installation; The prefabricated exterior wall panel and the structural frame beam have four connection and fixing points, which are two connection and fixing points at the lower side and two connection and fixing points at the upper side of the back of the prefabricated exterior wall panel; The four connection fixing points are the connection plates of the four steel brackets arranged on the prefabricated exterior wall panels and the four steel brackets arranged on the structural frame beams, which are overlapped with each other and then tightened and fixed with connection bolts and nuts after adding adjustment steel sheets; The connecting plates of the two overlapping steel brackets are respectively provided with waist-shaped holes. When overlapping, the two waist-shaped holes are cross-shaped. The connecting bolts are passed through the cross holes of the two waist-shaped holes and then tightened with nuts, added with adjustment steel sheets; It also includes positioning fine-tuning bolts and nuts, which are arranged on the connection plates of the steel corbels respectively provided on the prefabricated exterior wall panels and the structural frame beams, and adjust the verticality or horizontality of the prefabricated exterior wall panels relative to the ground; The positioning fine-adjustment bolts and their nuts are in two sets, which are respectively arranged at two connection and fixing points on the lower side of the back side of the prefabricated exterior wall panel. Specifically, the positioning fine-adjustment bolts pass through the connecting plates of the steel corbels welded to the prefabricated exterior wall panels. When the positioning fine-adjustment bolts rotate, the bolt ends thereof press against the connecting plates of the steel corbels welded to the structural frame beams.

2. The installation and connection structure of the prefabricated exterior wall panel according to claim 1, characterized in that: The waist-shaped hole has a length of 90-100 mm and a width of 32 mm.

3. The installation and connection structure of the prefabricated exterior wall panel according to claim 2, characterized in that: The steel corbel is a right-angle triangular plate steel corbel.

4. The installation and connection structure of the prefabricated exterior wall panel according to claim 3, characterized in that: There are two M24 bolts at the two connection and fixing points on the upper side of the back side of the prefabricated exterior wall panel, which connect and fix the steel corbel to the prefabricated exterior wall panel to prevent the prefabricated exterior wall panel from overturning.

5. The method for installing and connecting the installation and connection structure of the prefabricated exterior wall panel according to claim 4, characterized in that: The following steps are involved: 1) Preliminarily position the prefabricated exterior wall panels at the corresponding structural frame beam positions according to the requirements of the front-to-back, left-to-right and verticality of the prefabricated exterior wall panels; 2) The four connection fixing points are respectively connected by the connection bolts inserted into the cross holes of the waist-shaped holes after the hoisting is completed, the prefabricated exterior wall panels are initially positioned, and the adjustment steel sheets are inserted and initially tightened with nuts; 3) Adjust the two positioning fine-tuning bolts on the lower back side of the prefabricated exterior wall panel to fine-tune the verticality or horizontality of the prefabricated exterior wall panel; 4) After fine-tuning the positioning, tighten all four connecting bolts of the prefabricated exterior wall panel; 5) Left and right triangular adjustable diagonal braces are arranged on the inner side of the prefabricated exterior wall panels to support the structural floor slab; 6) Repeat steps 1)-5) twice to complete the installation of the prefabricated exterior wall panels on the two layers above the current structure; 7) This layer implements the process of first twisting and then steeling, that is, all the bolt connections completed in the previous process are welded according to the design requirements, and the connection of this layer corresponds to the connection of the connecting plate of the steel corbel, including the junction of the adjustment steel sheet and the connecting plate of the steel corbel, and the connection of all bolts and nuts with the connecting plate of the steel corbel. All are fully welded to form a connected whole and complete the installation; 8) After the installation of each 2 layers of upper prefabricated exterior wall panels is completed, the process of first twisting and then steeling in step 7) below the 2 layers can be implemented.

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