A method for synchronously constructing an exterior wall decorative board and a main structure

Abstract

The application discloses a kind of outer wall decorative strip and main structure synchronous construction method, comprising the following steps, construction reference layer below main structure;Construction reference layer structure floor and cantilevered plate and bury the anchor steel for fixed reference layer decorative strip;Construction reference layer structure wall body;Construction reference layer decorative strip and install anchor steel extending to the first layer cantilevered plate in reference layer above in the top of decorative strip;Construction reference layer above first layer structure floor and cantilevered plate, the anchor steel fixed in the top of reference layer decorative strip is poured in and bury the anchor steel for fixed reference layer above first layer decorative strip;Repeat the above construction step until structure is capped.The application realizes the synchronous construction of decorative strip and main structure by the optimization design of decorative strip connecting node, improves construction efficiency and safety factor, shortens construction period, achieves the purpose of cost reduction and efficiency increase.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a method for the simultaneous construction of exterior wall decorative panels and the main structure. Background Technology

[0002] Currently, in engineering construction, designers often use lightweight materials such as panels to achieve decorative effects on exterior walls. These lightweight panels are mostly fixed to the main structure using post-installed fasteners, with common installation methods including hook bolts, sliding bolts, and internal anchors (see 13J104 and other relevant standards and specifications for autoclaved aerated concrete blocks and panels). These installation methods involve installing the lightweight panels after the main structure is completed; the installation of the lightweight panels is not synchronized with the main structure construction. Due to this asynchronous construction, common installation methods are prone to the following problems:

[0003] 1) Since the construction of decorative exterior structures of general buildings is carried out after the main structure is completed and the scaffolding has been removed, the construction of decorative structures requires the use of external suspended scaffolding. The use of external suspended scaffolding has a low safety factor and often becomes a major hidden danger in construction safety. Even if the scaffolding is not removed, the materials need to be transported from the interior to the scaffolding outside the exterior wall due to the obstruction of the cantilever slab. Large construction machinery such as tower cranes cannot be used, making transportation extremely inconvenient. In addition, the small amount of work but the long service life of the scaffolding will increase the construction cost.

[0004] 2) The construction of decorative styling structures will be carried out after the main structure is completed. The exterior decoration construction can only be carried out after the decorative styling structures are completed, which will extend the overall construction period.

[0005] 3) Since the existing installation methods all involve installing decorative panels after the upper and lower cantilever slabs have been constructed, the decorative panels can only be placed in place by horizontal insertion. As a result, the bonding mortar between the decorative panels and the upper cantilever slab can only be applied by post-insertion. However, it is difficult to ensure that the bonding mortar applied by post-insertion is dense. Moreover, since the shrinkage of the post-insertion mortar is greater than that of the already constructed cantilever slab, cracks are prone to form at the post-insertion mortar. Summary of the Invention

[0006] The purpose of this invention is to propose a method for simultaneous construction of exterior wall decorative panels and the main structure, so as to solve the technical problems described in the background art.

[0007] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0008] A method for simultaneously constructing exterior wall decorative panels and the main structure includes the following steps:

[0009] Step S1: Set the lowest floor with decorative panels as the reference floor, and first construct the main structure of each floor below the reference floor.

[0010] Step S2: Construct the structural floor slab and cantilever slab of the base layer, carry out the reinforcement binding, formwork erection and concrete pouring of the structural floor slab and cantilever slab, and pre-embed anchoring steel bars for fixing the decorative strips of the base layer at the designed position of the cantilever slab.

[0011] Step S3: Construct the structural wall of the base layer, including positioning and setting out the structural wall, tying the reinforcing bars, setting up the formwork, and pouring the concrete.

[0012] Step S4: Construct the decorative strip panels for the base layer. Perform the positioning and layout process for the decorative strip panels. Open anchor holes at the top and bottom of the decorative strip panels. Fix the anchoring steel bars in the top anchor holes of the decorative strip panels with adhesive mortar. Hoist the decorative strip panels into place according to the control lines. Fit the bottom anchor holes of the decorative strip panels onto the anchoring steel bars pre-embedded in the base layer structural floor slab and fill the anchor holes with adhesive mortar. Then, temporarily fix the installed decorative strip panels with temporary fixing measures.

[0013] Step S5: Construct the first structural floor slab and cantilever slab above the construction reference layer. Carry out the reinforcement binding, formwork erection and concrete pouring process for the structural floor slab and cantilever slab. Cast the top anchoring steel bars of the decorative strip panel of the reference layer into the cantilever slab and pre-embed the anchoring steel bars for fixing the first decorative strip panel above the reference layer at the designed position of the cantilever slab.

[0014] Step S6: For the first structural wall above the construction reference layer, carry out the structural wall positioning and layout, rebar tying, formwork erection and concrete pouring procedures.

[0015] Step S7: For the first layer of decorative panels above the construction reference layer, the positioning and layout process of the decorative panels is carried out. Anchor holes are opened at the top and bottom of the decorative panels, and anchoring steel bars are fixed in the top anchor holes of the decorative panels with adhesive mortar. The decorative panels are hoisted into place according to the control line, and the bottom anchor holes of the decorative panels are fitted and fixed to the anchoring steel bars pre-embedded in the first layer of structural floor slab above the reference layer. Then, the installed decorative panels are temporarily fixed with temporary fixing measures.

[0016] Step S8: Construct the second structural floor slab and cantilever slab above the construction reference layer. Carry out the reinforcement binding, formwork erection and concrete pouring process for the structural floor slab and cantilever slab. Cast the top anchoring steel bars of the first decorative strip above the reference layer into the cantilever slab and pre-embed the anchoring steel bars for fixing the second decorative strip above the reference layer at the designed position of the cantilever slab.

[0017] Step S9: Reset the reference floor to the first floor below the current construction floor, and repeat the corresponding operations of steps S6 to S8 to carry out the construction of subsequent floors until the structure is capped.

[0018] Preferably, the anchoring steel bar is arranged vertically, with its middle section embedded in the cantilever slab and its two ends extending into anchor holes opened at the ends of the decorative strips above and below the cantilever slab, respectively; or, the anchoring steel bar is arranged vertically, with one end embedded in the cantilever slab and the other end extending into anchor holes opened at the ends of the decorative strips above or below the cantilever slab.

[0019] Preferably, adhesive mortar is injected between the bottom surface of the decorative panel and the top surface of the cantilever slab, and between the inner side of the decorative panel and the outer side of the structural wall. Reinforcing strips of mesh fabric are also pasted at the joints between the decorative panel and the cantilever slab, and between the decorative panel and the structural wall.

[0020] Preferably, the top or bottom of each decorative panel is fixedly connected to the cantilever slab by at least two anchoring steel bars.

[0021] Preferably, an anti-lateral displacement bracket is fixedly installed on the structural wall, and the inner end of the decorative strip is locked inside the anti-lateral displacement bracket.

[0022] Preferably, a grouting hole is provided below the decorative strip, one end of which is connected to the top of the anchor hole and the other end is connected to the outside.

[0023] Preferably, the temporary fixing measure is to use tie wires to connect the upper anchoring steel bars of the decorative strip to the longitudinal reinforcement of the structural wall.

[0024] Preferably, the bottom formwork of the cantilever slab within the enclosed space formed by the decorative strips is made of reinforced cement pressure board.

[0025] Compared with existing technologies, the beneficial effects of this invention are as follows: By optimizing the design of the connection nodes of the decorative panels, this invention achieves simultaneous construction of the decorative panels and the main structure. This allows for the effective use of large equipment such as tower cranes for hoisting construction materials such as decorative panels, improving construction efficiency while reducing the installation cost of decorative panels by 30-100 yuan / m². 2 Meanwhile, the construction of decorative panels can be completed before the scaffolding is removed, which improves the safety factor of the construction of decorative panels. Moreover, the insulation and decoration of the facade can be carried out immediately after the scaffolding is removed, which can effectively shorten the construction period by 10-30 days, achieving the goal of reducing costs and increasing efficiency. Attached Figure Description

[0026] The above and / or other aspects and advantages of the present invention will become clearer and more readily understood through the following detailed description taken in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of the decorative slat connection node where one end of the anchoring steel bar is exposed.

[0028] Figure 2 This is a schematic diagram of the structure of the decorative slat connection node where the ends of the anchoring steel bars are exposed.

[0029] Figure 3 This is a schematic diagram of the structure when the decorative strip of the present invention is temporarily fixed;

[0030] Figure 4 This is a schematic diagram of step S2 of the construction method involved in the present invention;

[0031] Figure 5 This is a schematic diagram of step S3 of the construction method involved in the present invention;

[0032] Figure 6 This is a schematic diagram of step S4 of the construction method involved in the present invention;

[0033] Figure 7 This is a schematic diagram of step S5 of the construction method involved in the present invention;

[0034] Figure 8 This is a schematic diagram of step S6 of the construction method involved in the present invention;

[0035] Figure 9 This is a schematic diagram of step S7 of the construction method involved in the present invention;

[0036] Figure 10 This is a schematic diagram of step S8 of the construction method involved in the present invention.

[0037] Attached reference numerals: 1-Structural floor slab, 2-Cantilever slab, 3-Structural wall, 4-Decorative strip, 5-Anchoring steel bar, 6-Bonding mortar, 7-Anchor hole, 8-Grouting hole, 9-Anti-lateral displacement clamp, 10-Tie wire, 11-Wall longitudinal reinforcement. Detailed Implementation

[0038] In the following description, an embodiment of a method for simultaneous construction of exterior wall decorative panels and the main structure according to the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0039] In the description of this invention, it should be noted that the terms "top", "bottom", "upper", "lower", "inner", "outer", "horizontal", "vertical", "standing", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention. The following description, in conjunction with... Figure 1-10 The preferred embodiments of the present invention will be described in further detail below:

[0042] like Figure 1-10 As shown, a preferred method for simultaneous construction of exterior wall decorative panels and the main structure according to the present invention includes the following steps:

[0043] Step S1: Set the lowest floor with decorative strips 4 as the reference floor, and first construct the main structure of each floor below the reference floor.

[0044] Step S2 involves constructing the base floor structural slab 1 and cantilever slab 2, including reinforcing bar binding, formwork erection, and concrete pouring for the structural slab 1 and cantilever slab 2. Anchor bars 5 are pre-embedded at the designed locations on the cantilever slab 2 to fix the decorative strips 4 of the base floor. Figure 1-2 As shown, the anchoring steel bar 5 can be installed in two ways, the first being as follows: Figure 1As shown, the anchoring steel bar 5 is vertically arranged, with its middle section embedded in the cantilever slab 2, and its two ends extending into the anchor holes 7 opened at the ends of the decorative strips 4 above and below the cantilever slab 2, respectively; the second type is as follows Figure 2 As shown, the anchoring steel bar 5 is vertically arranged, with one end embedded in the cantilever slab 2 and the other end extending into the anchor hole 7 opened at the end of the decorative strip 4 above or below the cantilever slab 2. The anchoring steel bar 5 of the first structural form can improve the integrity between the decorative strip 4 and the main structure. In order to ensure the connection stability of the decorative strip 4, the top or bottom of each decorative strip 4 is fixedly connected to the cantilever slab 2 by at least two anchoring steel bars 5.

[0045] Step S3: Construction of the reference layer structural wall 3, including positioning and layout of structural wall 3, reinforcement binding, formwork erection and concrete pouring.

[0046] Step S4 involves constructing the base layer decorative panel 4, including positioning and installing the decorative panel 4. After installation, the decorative panel 4 is temporarily fixed. The specific installation procedure for the decorative panel 4 is as follows.

[0047] Step S41: After the aerated concrete decorative strip 4 and matching accessories have been inspected and accepted upon arrival at the site, they should be cut and assembled according to the construction drawings and detailed plans. The assembled components need to be cured for 7 days before they can be hoisted.

[0048] Step S42: Anchor holes 7 are opened at the top and bottom of the decorative strip 4, and a grouting hole 8 communicating with the outside is opened at the top of the bottom anchor hole 7 of the decorative strip 4 to facilitate subsequent gravity grouting.

[0049] Step S43: Insert anchoring steel bar 5 into the anchor hole 7 at the top of the decorative strip 4, and inject polymer bonding mortar 6 into the anchor hole 7 to fix the anchoring steel bar 5 to the top of the decorative strip 4.

[0050] Step S44: Install anti-lateral displacement brackets 9 at appropriate positions on the control line of structural wall 3; clean the end face of decorative strip 4 to be spliced; pre-lay 5-8mm thick special polymer bonding mortar 6; clean the splicing surfaces of cantilever slab 2 and decorative strip 4, and structural wall 3 and decorative strip 4; apply 5-10mm of special polymer bonding mortar 6 to the splicing surfaces; before applying the mortar, moisten the decorative strip 4, cantilever slab 2 and structural wall 3 with an appropriate amount of water.

[0051] Step S45: Adjust the pre-embedded anchor steel bars 5 in the main concrete structure according to the control line to ensure that their positions are correct.

[0052] Step S46: After hoisting and moving the decorative panel 4 to the installation position, gently position it according to the control line. After adjusting for verticality, insert the bottom anchor hole 7 of the decorative panel 4 into the anchoring steel bar 5 pre-embedded in the base layer structural floor slab 1. Temporarily fix the upper end of the decorative panel 4 using temporary fixing measures, such as... Figure 3 As shown, temporary fixing measures can be achieved by using tie wire 10 to tie and connect the upper anchoring steel bar 5 of the decorative strip 4 to the longitudinal wall reinforcement 11 of the structural wall 3.

[0053] Step S47: Gravity injection of bonding mortar 6 into anchor hole 7 through grouting hole 8 to fix the lower fixing point of decorative strip 4. When installing multiple decorative strips 4 set along the depth direction, the decorative strips 4 close to the concrete structure wall 3 should be installed first to facilitate fixing.

[0054] Step S48: After the decorative strip 4 is installed and fixed, the excess adhesive mortar 6 at the joint should be cleaned. After the upper cantilever slab 2 concrete is poured and the adhesive mortar 6 at the joint has increased in strength, reinforcing strips of mesh fabric are then bonded at the joint to strengthen the nodes.

[0055] Step S5: Construct the first structural floor slab 1 and cantilever slab 2 above the base layer. Perform reinforcement binding, formwork erection, and concrete pouring for the structural floor slab 1 and cantilever slab 2. Simultaneously, pour the top anchoring steel bars 5 of the decorative strip 4 of the base layer into the cantilever slab 2. Pre-embed the anchoring steel bars 5 at the designed positions on the cantilever slab 2 to fix the first decorative strip 4 above the base layer. To enhance the integrity of the structural system, the anchoring steel bars 5 can be a single, continuous section running through the cantilever slab 2 (e.g.,...). Figure 1 As shown), the middle section of the anchoring steel bar 5 is embedded in the cantilever slab 2, and both its upper and lower ends extend vertically into the anchor holes 7 of the decorative strips 4 set on the upper and lower sides of the cantilever slab 2 and are connected to the decorative strips 4 by bonding mortar 6. When setting up the formwork for the cantilever slab 2, it should be noted that since some decorative shapes are enclosed spaces formed by the decorative strips 4, the formwork cannot be removed after the concrete cantilever slab 2 is poured. Therefore, the wooden formwork here can be replaced with a 20mm thick reinforced cement pressure board. This cement pressure board will not be removed after the concrete of the cantilever slab 2 is poured.

[0056] Step S6: For the first structural wall 3 above the construction reference layer, carry out the positioning and layout of the structural wall 3, reinforcement binding, formwork erection and concrete pouring procedures.

[0057] Step S7: The first decorative panel 4 above the construction reference layer is positioned and laid out. Anchor holes 7 are opened at the top and bottom of the decorative panel 4. Anchor steel bars 5 are fixed in the top anchor hole 7 of the decorative panel 4 with adhesive mortar 6. The decorative panel 4 is hoisted into place according to the control line. The bottom anchor hole 7 of the decorative panel 4 is fitted and fixed to the anchor steel bars 5 pre-embedded in the first structural floor slab 1 above the reference layer. Then, the installed decorative panel 4 is temporarily fixed with temporary fixing measures.

[0058] Step S8: Construct the second structural floor slab 1 and cantilever slab 2 above the construction reference layer. Carry out the reinforcement binding, formwork erection and concrete pouring process for the structural floor slab 1 and cantilever slab 2. Pour the top anchoring steel bars 5 of the first decorative strip 4 above the reference layer into the cantilever slab 2 and pre-embed the anchoring steel bars 5 for fixing the second decorative strip 4 above the reference layer at the designed position of the cantilever slab 2.

[0059] Step S9: Reset the reference floor to the first floor below the current construction floor, and repeat the corresponding operations of steps S6 to S8 to carry out the construction of subsequent floors until the structure is capped.

[0060] By optimizing the connection nodes of the decorative strip panel 4 and changing the construction procedures, the decorative strip panel 4 is constructed simultaneously with the main structure, thereby giving the present invention the following advantages:

[0061] 1) The decorative panel 4 is constructed simultaneously with the main structure, which can effectively utilize the external scaffolding for protection and improve the safety of construction;

[0062] 2) The simultaneous construction of decorative panel 4 and the main structure is a normal construction sequence, which avoids the obstruction of the top cantilever slab 2. The decorative panel 4 can be vertically hoisted and installed, and large equipment such as tower cranes can be effectively used for hoisting construction materials, thus improving construction efficiency.

[0063] 3) It can shorten the construction period. After the main structure is completed, the decorative structure of the facade is also completed. After the scaffolding is removed, the insulation and decoration of the facade can be carried out.

[0064] 4) The decorative panel 4 is constructed simultaneously with the main structure. The lower part of the decorative panel 4 is directly pressed onto the bonding mortar 6, and the upper part of the decorative panel 4 is directly poured together with the cantilever slab 2 concrete as a template. The upper and lower contact surfaces of the decorative panel 4 are very dense. Moreover, since it is constructed simultaneously with the main structure concrete, the difference in shrinkage is very small, and it is not easy to produce cracks, resulting in better overall integrity.

[0065] 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for simultaneous construction of exterior wall decorative panels and main structure, characterized in that, Includes the following steps: Step S1: The lowest floor with decorative strips (4) is set as the reference floor. First, the main structure of each floor below the reference floor is constructed. Step S2 involves constructing the base floor structural slab (1) and cantilever slab (2), including the reinforcement binding, formwork erection, and concrete pouring of the structural slab (1) and cantilever slab (2). Anchor steel bars (5) are pre-embedded at the designed location of the cantilever slab (2) to fix the decorative strips (4) of the base floor. The bottom formwork of the cantilever slab (2) within the enclosed space formed by the decorative strips (4) is made of reinforced cement pressure board. Step S3, construct the structural wall (3) of the base layer, and carry out the positioning and layout of the structural wall (3), reinforcement binding, formwork erection and concrete pouring procedures; Step S4: Construct the decorative strip panel (4) of the base layer. Perform the positioning and layout process of the decorative strip panel (4). Open anchor holes (7) at the top and bottom of the decorative strip panel (4). Fix the anchoring steel bars (5) in the top anchor hole (7) of the decorative strip panel (4) with adhesive mortar (6). Hoist the decorative strip panel (4) into place according to the control line. Set the bottom anchor hole (7) of the decorative strip panel (4) onto the anchoring steel bars (5) pre-embedded in the base layer structural floor slab (1) and pour adhesive mortar (6) into the anchor hole (7). Then temporarily fix the installed decorative strip panel (4) with temporary fixing measures. Step S5: Construct the first structural floor slab (1) and cantilever slab (2) above the construction reference layer. Carry out the reinforcement binding, formwork erection and concrete pouring of the structural floor slab (1) and cantilever slab (2). Pour the top anchoring steel bars (5) of the decorative strip panel (4) of the reference layer into the cantilever slab (2) and pre-embed the anchoring steel bars (5) for fixing the first decorative strip panel (4) above the reference layer at the designed position in the cantilever slab (2). Step S6: The first structural wall (3) above the construction reference layer is constructed. The structural wall (3) is positioned, the steel bars are tied, the formwork is erected and the concrete is poured. Step S7: The first decorative panel (4) above the construction reference layer is constructed. The positioning and layout process of the decorative panel (4) is carried out. Anchor holes (7) are opened at the top and bottom of the decorative panel (4). Anchor steel bars (5) are fixed in the top anchor hole (7) of the decorative panel (4) by bonding mortar (6). The decorative panel (4) is hoisted into place according to the control line. The bottom anchor hole (7) of the decorative panel (4) is fitted and fixed on the anchor steel bars (5) pre-embedded in the first structural floor slab (1) above the reference layer. Bonding mortar (6) is poured into the anchor hole (7). Then the installed decorative panel (4) is temporarily fixed by temporary fixing measures. Step S8: Construct the second structural floor slab (1) and cantilever slab (2) above the construction reference layer. Carry out the reinforcement binding, formwork erection and concrete pouring of the structural floor slab (1) and cantilever slab (2). Pour the top anchoring steel bars (5) of the first decorative strip slab (4) above the reference layer into the cantilever slab (2) and pre-embed the anchoring steel bars (5) for fixing the second decorative strip slab (4) above the reference layer at the designed position in the cantilever slab (2). Step S9: Reset the reference floor to the first floor below the current construction floor, and repeat the corresponding operations of steps S6 to S8 to carry out the construction of subsequent floors until the structure is capped.

2. The method for simultaneous construction of exterior wall decorative panels and main structure according to claim 1, characterized in that: The anchoring steel bar (5) is set vertically, with its middle section embedded in the cantilever slab (2) and its two ends extending into the anchor holes (7) opened at the ends of the decorative strips (4) above and below the cantilever slab (2); or, the anchoring steel bar (5) is set vertically, with one end embedded in the cantilever slab (2) and the other end extending into the anchor holes (7) opened at the ends of the decorative strips (4) above or below the cantilever slab (2).

3. The method for simultaneous construction of exterior wall decorative panels and main structure according to claim 1, characterized in that: Adhesive mortar (6) is injected between the bottom surface of the decorative panel (4) and the top surface of the cantilever slab (2), and between the inner side of the decorative panel (4) and the outer side of the structural wall (3). Reinforcing strips of mesh fabric are pasted at the joints between the decorative panel (4) and the cantilever slab (2) and between the decorative panel (4) and the structural wall (3).

4. The method for simultaneous construction of exterior wall decorative panels and main structure according to claim 1, characterized in that: Each decorative panel (4) is fixedly connected to the cantilever slab (2) at its top or bottom by at least two anchoring steel bars (5).

5. The method for simultaneous construction of exterior wall decorative panels and main structure according to claim 1, characterized in that: The structural wall (3) is fixedly installed with anti-lateral displacement brackets (9), and the inner end of the decorative strip (4) is stuck in the anti-lateral displacement brackets (9).

6. The method for simultaneous construction of exterior wall decorative panels and main structure according to claim 1, characterized in that: A grouting hole (8) is provided below the decorative strip (4). One end of the grouting hole (8) is connected to the top of the anchor hole (7), and the other end is connected to the outside.

7. The method for simultaneous construction of exterior wall decorative panels and main structure according to claim 1, characterized in that: The temporary fixing measure is to use tie wire (10) to tie the upper anchoring steel bar (5) of the decorative strip (4) to the longitudinal wall reinforcement (11) of the structural wall (3) in the joint section.

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