Cast-in-place concrete structure and prefabricated partition wall integrated assembly synchronous construction method

Abstract

The invention relates to an integrated assembly and synchronous construction method for a cast-in-place concrete structure and a prefabricated partition wall. The method comprises the following steps: assembling ALC wallboards into a whole indoor partition wall body; (2) building an interlayer inner support frame and binding wall and column steel bars; (3) outer side formworks of the shear wall and the structural column are manufactured and installed; (4) manufacturing and installing a beam plate formwork on the upper layer and a supporting system of the beam plate formwork; (5) steel bars of the upper layer of beam slab are manufactured and installed; (6) concrete pouring is conducted on surface layers, beam slabs and local reverse ridges of the shear walls and the structural columns; and 7) removing the formwork when the concrete reaches the designed strength, and constructing the upper floor. The construction method can reduce and even eliminate the occupation of the procedure on the construction key line, and can avoid the damage to the ALC wall body during the installation of the ALC wall body; by means of the construction method, a large amount of construction waste generated in the building in the ALC plate wall construction can be reduced and even eliminated, conditions are created for use of large hoisting equipment, and the use efficiency of a tower crane is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of house construction, and in particular relates to a method for synchronously assembling and constructing a cast-in-place concrete structure and a prefabricated partition wall. Background Art

[0002] In housing construction projects, the application of ALC prefabricated panel partitions is becoming more and more widespread. Especially in projects such as super high-rise commercial buildings that have high requirements for physical quality and construction period, ALC prefabricated panel partitions are becoming more and more common in housing construction projects due to their advantages such as light weight, good fire resistance and sound insulation, green environmental protection, economy, and relatively convenient construction.

[0003] The main construction sequence of ALC prefabricated partition wall housing construction is: first cast-in-place concrete structure construction, then ALC partition wall construction. A large amount of construction materials need to be transported to the floor, and a large number of workers are working in the building where the main construction has been completed. During the process, due to the limited floor height and the completion of the main structure, cranes and large processing machinery cannot be used, and the degree of dependence on manpower is higher than that in the main construction stage.

[0004] At the same time, ALC board wall construction has a high assembly rate and is less dependent on manpower than masonry construction, but it requires a higher level of technical skills for construction managers. During the secondary structure construction phase, the various work surfaces are numerous and scattered, making technical quality management and safety management difficult; the conventional approach of increasing construction managers to meet on-site management requirements is not conducive to cost control.

[0005] Therefore, the prior art urgently needs a new technical solution to solve the above problems. Summary of the invention

[0006] The problem to be solved by the present invention is that the concrete structure constructed first in the existing building construction causes the later ALC partition wall construction space to be limited, and the partition wall installation is inconvenient.

[0007] The present invention solves the above-mentioned problem by adopting the following technical solution: The synchronous construction method of integrated assembly of cast-in-place concrete structure and prefabricated partition wall is carried out in the following steps: Step 1: hoist and place the ALC wall panels, inner support frames, formwork and other construction turnover materials on the work surface; Step 2: Use the transport installation bracket to install the ALC wall panels to the designated location, and use the ALC wall panels to assemble the entire indoor partition wall; Step 3: erect the interlayer support frame and tie the wall and column reinforcement; Step 4: Make and install the outer formwork of shear walls and structural columns; Step 5: Fabricate and install the upper layer beam and slab formwork and its support system; Step 6: Fabricate and install the reinforcement bars of the upper beam and slab; Step 7: pour concrete for the surface layer of shear walls and structural columns, beams and slabs, and local anti-ridges; Step 8: When the concrete reaches the designed strength, remove the formwork and proceed to the construction of the next floor slab.

[0008] Compared with the prior art, the present invention adopting the above structure has the following beneficial effects: This construction method can reduce or even eliminate the occupation of key construction lines by this process, and can avoid damage to the ALC wall during installation; this construction method can reduce or even eliminate the large amount of construction waste generated in the building during ALC board wall construction, create conditions for the use of large lifting equipment, improve the use efficiency of large lifting equipment such as tower cranes, and reduce dependence on manpower.

[0009] As a preferred embodiment, a further technical solution of the above structure is: The first step is to transport the construction materials from the corresponding material storage area to the working surface by means of a tower crane.

[0010] The specific operation of step 2 is: first distribute the ALC wall panels uniformly stacked on the work surface, and transport them to the designated positions on the work surface according to the design requirements; then install them in place; the density of the ALC wall panels is 600 kg / m3~700kg / m3, The compressive strength of the cube is ≥4MPa, and the single-point hanging force is ≥1200N. At the location of the indoor partition wall to be built, the ALC wall panels are arranged vertically and assembled piece by piece along the length direction of the indoor partition wall. If it cannot be an integer number of panels, mechanical cutting is adopted. Before installing each ALC wall panel, a 10mm thick adhesive mortar is applied to the top of the next ALC wall panel or prefabricated anti-slope. Then the next ALC wall panel is installed, one by one until the entire indoor partition wall is completed. After each ALC wall panel is installed, holes are punched for fixing with metal keels. A vertical keel is arranged every 1.2m along the direction of the indoor partition wall. When the edge of the wall is less than 1.2m, a vertical keel needs to be added at the edge. Two horizontal keels are set at the top and bottom of each vertical keel.

[0011] The specific operation of making and installing shear wall and structural column formwork is as follows: when the formwork is arranged at the junction of the shear wall, structural column and indoor partition wall, a sealing strip is pasted on the side of the indoor partition wall to tightly connect the shear wall or structural column formwork with the partition wall, and the sealing strip is pressed with tension bolts to prevent concrete leakage and ensure a tight connection between the shear wall and structural column formwork and the indoor partition wall.

[0012] The specific installation of the upper layer of beam and slab formwork and support system in step five is as follows: 1) Plaster the top of the indoor partition wall and place the beam and slab bottom formwork, and use the plastering thickness to fine-tune the elevation of the bottom formwork; 2) Set steel pipes on the lower side of the bottom formwork, and set wooden beams on the top of the steel pipes. The wooden beams are in contact with the lower surface of the bottom formwork. The wooden beams and steel pipes are arranged at equal intervals along the length of the beam and slab to support the suspended bottom formwork; 3) Install the beam and slab side formwork, and fix the lower side of the side formwork to the side of the bottom formwork; 4) Install the floor slab lower formwork, and fix the side of the floor slab lower formwork to the top of the beam and slab side formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a construction flow chart of the present invention; Figure 2 It is the indoor partition wall structure of the present invention; Figure 3 It is a structural diagram of the cast-in-place concrete beam of the present invention using indoor partition wall formwork.

[0014] In the figure: 1. Indoor partition wall; 2. ALC wall panel; 3. Wall column; 4. Working surface; 5. Beam and slab; 6. Bottom formwork; 7. Support system; 71. Wooden beam; 72. Steel pipe. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0016] See also Figure 1 The cast-in-place concrete structure and prefabricated partition wall integrated assembly synchronous construction method provided by the present invention is carried out in sequence according to the following steps: Step 1: hoist and place the ALC wall panel 2, the inner support frame, the formwork and other construction turnover materials on the working surface 4; Step 2: Use the transport installation bracket to install the ALC wall panel 2 to the designated position, and use the ALC wall panel 2 to assemble the entire indoor partition wall 1; Step 3: erect the interlayer support frame and tie the wall and column reinforcement; Step 4: Make and install the outer formwork of shear walls and structural columns; Step 5: Make and install the upper layer beam slab 5 formwork and its support system 7; Step 6: Install the steel bars of the upper beam and slab 5; Step 7: pouring concrete for the surface layer of the shear wall and the structural column, the beam and slab 5, and the local anti-ridge; Step 8: When the concrete reaches the designed strength, remove the formwork and proceed to the construction of the next floor slab.

[0017] In the above construction, there is no wall or structure blocking the lifting on the working surface 4 before the construction of step 1, and the construction materials are transported from the corresponding material storage area to the working surface 4 by the tower crane so that the next step of work can be carried out normally.

[0018] The ALC wall panels 2 should be neatly stacked on the work surface 4. During construction, a transfer installation bracket is used to position and install the ALC wall panels 2. The transfer installation bracket is an installation tool specially used for installing the ALC wall panels 2 during construction, and it has the functions of hoisting, adjusting and installing.

[0019] The ALC wall panels 2 uniformly stacked on the working surface 4 are distributed through the transfer and installation bracket, transferred to the designated position on the working surface 4 according to the design requirements, and then installed in place; the density of the ALC wall panels 2 is 600 kg / m3~700kg / m3, the cubic compressive strength is ≥4MPa, and the single-point hanging force is ≥1200N.

[0020] See also Figure 2 The common width of ALC wall panels is 600mm and the length is 6000mm. According to the design requirements, they are assembled vertically one by one with 600mm as the base in the length direction of the wall to be built. If it cannot be an integer number of panels, mechanical cutting is adopted. Before installing each ALC wall panel, a 10mm thick special bonding mortar is applied on the top of the next ALC wall panel or prefabricated anti-slope. The special bonding mortar is used to fill the space between each vertical ALC wall panel, and then the next ALC wall panel 2 is installed.

[0021] Install ALC wall panels piece by piece in this way until the entire indoor partition wall 1 is completed; after each ALC wall panel 2 is installed, punch holes for fixing metal keels. The keels are made of 80mm*80mm angle steel. A vertical keel is arranged every 1.2m along the indoor partition wall 1. When the wall edge is less than 1.2m, a keel needs to be added at the edge. Two horizontal keels are arranged at the top and bottom between each vertical keel. The top horizontal keel is made of 60mm*40mm square steel and needs to be hoisted for installation, so fixed hanging points need to be arranged. The bottom horizontal keel is made of 40mm*40mm square tube.

[0022] The manufacture and installation of the shear wall and structural column formwork in step 4 requires that the end of the indoor partition wall 1 be properly combined with the shear wall and structural column to be cast according to the design requirements, and reliable connection points be set to ensure that the wall column 3 formwork and the wall are tightly connected. Specifically: When the shear wall formwork or the structural column formwork is arranged at the junction with the indoor partition wall 1, a sealing strip is pasted on the side of the indoor partition wall 1 to tightly connect the shear wall or structural column formwork with the partition wall, and the sealing strip is pressed with tension bolts to prevent concrete leakage and ensure that the shear wall and structural column formwork and the indoor partition wall 1 are tightly connected.

[0023] See also Figure 3 , the above-layer beam and slab 5 formwork and support system 7 in step 5 are specifically manufactured and installed as follows: 1) Plaster the top of the indoor partition wall 1 and place the beam and slab 5 bottom formwork 6, and use the plastering thickness to fine-tune the elevation of the bottom formwork 6. The bottom formwork 6 uses a cement-based fiberboard with a bottom film, which can avoid demolding and avoid the mortar from bonding with the cement-based fiberboard. 2) A steel pipe 72 is set on the lower side of the bottom formwork 6, and a wooden beam 71 is set on the top of the steel pipe 72. The wooden beam 71 is in contact with the lower surface of the bottom formwork 6. The wooden beam 71 and the steel pipe 72 are arranged at equal intervals along the length of the beam and slab 5 to support the suspended bottom formwork 6 and ensure the visual effect of the beam component molding. 3) Install the side formwork of the beam and slab 5, and the lower side of the side formwork is fixed to the side of the bottom formwork 6; 4) Install the lower formwork of the floor slab, and the side of the lower formwork of the floor slab is fixed to the top of the side formwork of the beam and slab 5.

[0024] The manufacture and installation of the beam and slab 5 formwork support system 7 is carried out alternately with the installation of the indoor partition wall 1 in step 2 and the reinforcement binding of the wall column 3 in step 3 on the same working surface 4.

[0025] Before pouring concrete in step seven, check the joints between the formwork and the wall, and the joints between the formwork to ensure that all gaps are properly sealed and compacted; during the concrete pouring process, pay attention to controlling the concrete pouring speed and vibration frequency to reduce the construction load on the formwork as much as possible to prevent concrete leakage and ensure the concrete survival effect of the wall or wall column 3.

[0026] The present invention discloses a synchronous construction method for secondary structure, masonry engineering and main engineering of a building project. The external wall masonry construction is eliminated by using the full cast-in-place external wall technology, and the full cast-in-place external wall technology, ALC prefabricated board wall technology and the formwork-free construction process are organically combined. During the main construction, after the floor slab is poured to form a working surface 4, the ALC prefabricated board wall is constructed, and at the same time, the wall columns 3 on the same working surface 4 are reinforced and their formwork is installed in a zoned and staggered manner; then the beam slab 5 formwork is installed and the reinforcement is tied. After the above processes are completed, concrete is poured. Through the above processes, the purpose of synchronously completing the indoor secondary structure and the main engineering is achieved.

[0027] The following is a detailed description of the main construction process in conjunction with a specific embodiment: Step S0: hoisting and placing ALC wall panels 2 and turnover materials such as inner support frames and formwork on the working surface 4; Step S1: Use a special transport and installation bracket to transport and install the ALC wall panel 2 from the temporary stacking area on the working surface 4 to a designated location; Step S2: Using the shaped steel frame as support, pre-assemble the ALC light partition panels to complete the indoor partition wall 1 in advance; Step S3: the manufacture and installation of the formwork support system 7 and the installation of the indoor partition walls 1 on the same working surface 4 and the reinforcement binding of the wall columns 3 are carried out in a staggered manner; Step S4: Make and install the outer formwork of the shear wall and the structural column, and paste a 3mm thick sealing strip on the indoor partition wall 1 at the junction of the formwork and the indoor partition wall 1 to ensure that the formwork partially covers the indoor partition wall 1. When the formwork is installed, tighten the sealing strip with tension bolts to prevent concrete leakage; Step S5: manufacturing and installing the upper layer beam slab 5 formwork and its supporting system 7. The bottom formwork 6 of the beam slab 5 above the indoor partition wall 1 adopts a formwork-free design to improve the surface appearance quality of the component after the formwork is removed; Step S6: Fabricate, install and tie the steel bars of the beam and slab 5.

[0028] Step S7: Before pouring concrete, check the joints between the formwork and the indoor partition wall 1 and the joints between the formworks to ensure that all gaps are properly sealed and compacted; during the concrete pouring process, pay attention to controlling the concrete pouring speed and vibration frequency to reduce the construction load on the formwork as much as possible to prevent concrete leakage and ensure the concrete survival effect of the indoor partition wall 1 or wall column 3.

[0029] Among them, the ALC wall panel 2 can be other types of partition panels that meet the density requirements. Its main feature is that the strip partition panels are used vertically, and the main structure and the secondary structure are constructed simultaneously by reasonably arranging the construction sequence. A wall less than 600mm wide can use one strip panel vertically.

[0030] The present invention can bring the following beneficial effects: the integrated assembly and synchronous construction method of cast-in-place concrete structure and indoor partition wall can greatly improve the construction efficiency of building projects, combine the construction period of main structure and secondary structure into one, effectively shorten the construction time, reduce construction costs, save construction space, improve the utilization efficiency of hoisting machinery such as tower cranes, and reduce dependence on manpower.

[0031] The ALC indoor partition wall of this method adopts dry operation, high efficiency, quick disassembly and assembly, can be processed in a factory, has low dependence on technical level, and is easy to promote. In addition, the applied technology is constructed by industrialized workers, and the secondary structure is upgraded to prefabricated construction, which is in line with the country's direction of vigorously promoting prefabricated buildings.

[0032] This method integrates the complex and large-scale sporadic operations in traditional processes into an assembled construction method by reasonably arranging the work procedures, and organically combines the secondary structure and masonry engineering with the main engineering, which is conducive to future mass promotion.

[0033] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A method for synchronously assembling a cast-in-place concrete structure and a prefabricated partition wall, characterized in that: Follow these steps: Step 1: hoist and place the ALC wall panel (2) and the inner support frame, formwork and other construction turnover materials on the working surface (4); Step 2: Use a transfer installation bracket to install the ALC wall panel (2) to a designated location, and use the ALC wall panel (2) to assemble a whole indoor partition wall (1); Step 3: erect the interlayer support frame and tie the wall and column reinforcement; Step 4: Make and install the outer formwork of shear walls and structural columns; Step 5, manufacturing and installing the upper layer beam and slab (5) formwork and its supporting system (7); Step 6, fabrication and installation of the steel bars of the upper beam and slab (5); Step 7, pouring concrete for the surface layer of the shear wall and the structural column, the beam and slab (5) and the local anti-ridge; Step 8: When the concrete reaches the designed strength, remove the formwork and proceed to the construction of the next floor slab.

2. The method for synchronously assembling the cast-in-place concrete structure and the prefabricated partition wall according to claim 1 is characterized in that: Step 1 is to transport the construction materials from the corresponding material storage area to the working surface (4) by means of a tower crane.

3. The method for synchronously assembling the cast-in-place concrete structure and the prefabricated partition wall according to claim 1 is characterized in that: The specific operation of step 2 is: first distribute the ALC wall panels (2) uniformly stacked on the working surface (4), and transport them to designated positions on the working surface (4) according to design requirements; then install them in place; the density of the ALC wall panels (2) is 600kg / m3 to 700kg / m3, The cubic compressive strength is ≥4MPa, and the single-point hanging force is ≥1200N. At the location of the indoor partition wall (1) to be constructed, the ALC wall panels (2) are arranged vertically and assembled piece by piece along the length direction of the indoor partition wall (1). If the panels cannot be an integer, a mechanical cutting method is adopted. Before installing each ALC wall panel (2), a 10mm thick bonding mortar is applied to the upper part of the next ALC wall panel (2) or the prefabricated anti-slope. Then, the next ALC wall panel (2) is installed, and the installation is performed piece by piece until the entire indoor partition wall (1) is completed. After each ALC wall panel (2) is installed, holes are punched for fixing with metal keels. A vertical keel is arranged every 1.2m along the direction of the indoor partition wall (1). When the wall edge is less than 1.2m, a vertical keel needs to be added at the edge. Two horizontal keels are arranged at the top and bottom of each vertical keel.

4. The method for synchronously assembling a cast-in-place concrete structure and a prefabricated partition wall according to claim 1 is characterized in that: The specific operation of making and installing the shear wall and structural column formwork is as follows: when the formwork is arranged at the junction of the shear wall, structural column and indoor partition wall (1), a sealing strip is pasted on the side of the indoor partition wall (1), the formwork of the shear wall or structural column is tightly connected to the partition wall, and the sealing strip is pressed with tension bolts to prevent concrete leakage and ensure that the shear wall and structural column formwork and the indoor partition wall (1) are tightly connected.

5. The method for synchronously assembling the cast-in-place concrete structure and the prefabricated partition wall according to claim 1 is characterized in that: In step 5, the upper layer of beam and slab (5) formwork and support system (7) are manufactured and installed as follows: 1) plastering is performed on the top of the indoor partition wall (1) and the beam and slab (5) bottom formwork (6) is placed, and the elevation of the bottom formwork (6) is fine-tuned by using the plastering thickness; 2) a steel pipe (72) is arranged on the lower side of the bottom formwork (6), and a wooden beam (71) is arranged on the top of the steel pipe (72), and the wooden beam (71) is abutted against the lower surface of the bottom formwork (6), wherein the wooden beam (71) and the steel pipe (72) are arranged at equal intervals along the length of the beam and slab (5) to support the suspended bottom formwork (6); 3) the beam and slab (5) side formwork is installed, and the lower side of the side formwork is fixed to the side of the bottom formwork (6); 4) the floor slab bottom formwork is installed, and the side of the floor slab bottom formwork is fixed to the top of the beam and slab (5) side formwork.

6. The method for synchronously assembling the cast-in-place concrete structure and the prefabricated partition wall according to claim 5 is characterized in that: The manufacture and installation of the beam and slab (5) formwork support system (7) is carried out in an alternating manner with the installation of the indoor partition wall (1) in step 2 and the reinforcement binding of the wall column (3) in step 3 on the same working surface (4).

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