A prefabricated reinforced concrete building main structure and installation construction method thereof

Abstract

A prefabricated reinforced concrete building main structure includes a unitized prefabricated reinforced concrete building main body, the unitized prefabricated reinforced concrete building main body includes a plurality of prefabricated reinforced concrete building units, each adjacent prefabricated reinforced concrete building unit is connected to each other, the outermost prefabricated reinforced concrete building unit is closed by an end seal, the prefabricated reinforced concrete building unit includes a plain concrete leveling cushion layer at the bottom, a foundation is provided on the plain concrete leveling cushion layer, an integrated column wall panel is provided on the foundation, an integrated composite bottom plate beam is provided on the upper part of the integrated column wall panel, and a connecting steel plate and a secondary grouting composite panel are provided on the integrated composite bottom plate beam. The present invention also includes a construction and installation method for the prefabricated reinforced concrete building main structure. By using the present invention, the assembly efficiency of the building can be greatly improved, the hoisting installation can be simplified, the working environment can be improved, and the safety risk can be reduced; energy saving and environmental protection, large-scale production, and the cost of prefabricated reinforced concrete buildings can be reduced.

Description

Technical Field

[0001] The invention relates to a building main structure, in particular to an assembled reinforced concrete building main structure and an installation construction method thereof. Background Art

[0002] In recent years, my country has actively explored the development of prefabricated buildings, but most of the construction methods are still based on on-site pouring. The General Office of the State Council issued the "Guiding Opinions on Vigorously Developing Prefabricated Buildings". From the end of 2012, the National Grid Corporation carried out the pilot construction of standard distribution-type smart substations based on the project, to the pilot promotion of a new generation of prefabricated substations, in order to achieve the new characteristics of "standardized design, factory processing, and prefabricated construction" of standard distribution-type smart substations; specifically in terms of substation construction, a large number of steel structure buildings have been piloted, and some phased results have been achieved. New substation buildings below 220kV use standard prefabricated assembly building structures of steel structure beams and columns + cast-in-place reinforced concrete floors + prefabricated walls, but due to the weaknesses of steel itself in fire and corrosion resistance, the building structure is complex, the assembly efficiency and scale are not high, and regular maintenance is required, and it is not suitable for areas with strong winds (sand). Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an assembled reinforced concrete building main structure with high factory integration, high assembly rate, good quality, energy saving and environmental protection, and low cost, and an installation and construction method thereof.

[0004] The technical solution adopted by the present invention to solve the technical problem is a unitized assembled reinforced concrete bent shear wall building main structure, including a unitized assembled reinforced concrete building body, the unitized assembled reinforced concrete building body includes a plurality of assembled reinforced concrete building units, each adjacent assembled reinforced concrete building unit is connected to each other, and the outermost assembled reinforced concrete building unit is closed by an end seal.

[0005] The assembled reinforced concrete building unit comprises a plain concrete leveling cushion at the bottom, a foundation is arranged on the plain concrete leveling cushion, an integrated column wall panel is arranged on the foundation, an integrated composite bottom plate beam is arranged on the upper part of the integrated column wall panel, and a connecting steel plate and a secondary grouting composite panel are arranged on the integrated composite bottom plate beam;

[0006] The single integrated column wall panel comprises two columns arranged on a foundation, a wall panel is arranged on the side between the two columns, a foundation beam is arranged at the bottom of the wall panel, a wall beam is arranged at the top, a parapet is arranged on the wall beam, and pre-buried installation bolts are arranged on the column;

[0007] The integrated composite bottom plate beam comprises a composite bottom plate, peripheral beams are arranged around the composite bottom plate, and a supporting beam is arranged at the bottom of the composite bottom plate; the end seal has the same structure as the integrated column wall plate.

[0008] Furthermore, the foundation is a prefabricated cup mouth foundation, and a hoisting hole is provided at the lower part of the cup mouth foundation.

[0009] Furthermore, the columns of the integrated column wall panels are widened by 10-30 cm below the top surface of the foundation beam. Furthermore, the integrated column wall panels are provided with reserved openings to meet the requirements of setting doors and windows in the building.

[0010] Furthermore, the internal pre-buried pipes of the integrated column and wall panels are used to meet the requirements of water, electricity, heating and ventilation of the building.

[0011] Furthermore, the integrated column wall panel is provided with a water retaining plate, the overlapping panels are flipped up to the water retaining plate, and the waterproof on the overlapping panels is flipped up to the water retaining plate and inserted into the gap between the overlapping panels and the water retaining plate, so as to better meet the requirements of building waterproofing.

[0012] Furthermore, the thickness of the integrated column and wall panels is ≥50mm; the thickness of the integrated column and wall panels is ≥140mm, which can be used as shear walls; the thickness of the integrated column and wall panels is ≥90mm, which can be used as fire walls with a fire resistance limit of 2h; the thickness of the integrated column and wall panels is ≥150mm, which can be used as fire walls with a fire resistance limit of 3h; the thickness of the integrated column and wall panels is ≥210mm, which can be used as fire walls with a fire resistance limit of 4h.

[0013] Furthermore, a partition wall is provided inside the unitized assembled reinforced concrete building body to meet the requirements of building separation.

[0014] A method for installing and constructing a main structure of an assembled reinforced concrete building comprises the following steps:

[0015] Step 1: Tamp the soil at the bottom of the plain concrete leveling cushion layer, with a compaction coefficient of ≥0.97; then pour a layer of C15 plain concrete leveling cushion layer, with each side of the plain concrete leveling cushion layer being 100mm larger than the bottom surface of the cup-mouth foundation on each side, and the height being not less than 100mm, to initially adjust the bottom elevation of the cup-mouth foundation;

[0016] Step 2: Prefabricate the cup-shaped foundation and hoist it to the designed position on the on-site plain concrete leveling cushion;

[0017] Step 3: Use fine stone concrete to accurately level the bottom plane elevation of the cup-mouth foundation. After the fine stone concrete solidifies, hoist the integrated column wall panel. The lower column of the integrated column wall panel is installed in the designed position in the cup-mouth foundation on site and preliminarily fixed. After the lower column of the integrated column wall panel is installed and adjusted, the fine stone concrete of the cup-mouth foundation is grouted and fixed.

[0018] Step 4: After the fine stone concrete of the cup-mouth foundation is solidified, the integrated composite floor beam is hoisted. After the reserved bolt holes on the integrated composite floor beam are aligned with the embedded installation bolts of the columns on the upper part of the integrated column wall panel, the integrated composite floor beam is placed on the integrated column wall panel through the embedded installation bolts, and then the integrated composite floor beam, the integrated column wall panel and each assembled reinforced concrete building unit are connected and fixed together by connecting steel plates and nuts;

[0019] Step 5: Pour grouting material or impermeable fine stone concrete into the reserved bolt holes, the gaps reserved for each prefabricated reinforced concrete building unit, the integrated composite bottom plate beam and the integrated column wall panels. When pouring grouting material or impermeable fine stone concrete into the reserved bolt holes, the gaps reserved for each prefabricated reinforced concrete building unit, the integrated composite bottom plate beam and the integrated column wall panels, leave a 20-40mm gap close to the roof waterproof side;

[0020] Step 6: After the grouting material and / or impermeable fine stone concrete solidifies, reserve a 20-40mm gap near the roof waterproof side, apply waterproof coating or paste in the gap, lay out the composite panels and anti-edge steel bars, and then cast the composite panels and anti-edge. At this point, the main structure of the unitized prefabricated reinforced concrete building is installed.

[0021] Furthermore, in the third step, when the partition wall adopts assembled reinforced concrete slabs, the steps of the first to third steps are also referred to to complete the lower fixed foundation, piers, and lower beams, and then the lower part is fixed on the foundation, piers, and lower beams. After the upper part of the inner partition wall is temporarily supported and fixed, the fourth step is entered. After completing the fourth step, the upper part of the partition wall is fixed on the upper beams, slabs, and columns. When the partition wall adopts conventional lightweight partition walls and lightweight interior integrated partition walls, the lightweight interior integrated partition walls do not require secondary decoration, the weight of the single unit is not large, and it can be set on a beam or a simple foundation. It does not require large-scale lifting equipment and can be directly installed manually after the main structure is installed.

[0022] The present invention unitizes the building according to a certain module, and integrates the columns, wall panels and wall beams on one side of the unitized assembled reinforced concrete building unit. During production and transportation, the columns and wall beams form a frame of the wall panels. After installation and completion, the columns, wall panels and wall beams form column units in the rack direction. At the same time, the wall panels, columns and wall beams form components that resist shear forces in the vertical rack direction. The thickness of the integrated column and wall panels is ≥140mm, which can be used as shear walls. Shear walls are also known as earthquake-resistant walls, and have good earthquake resistance and horizontal force resistance performance. The thickness of the integrated column and wall panels is ≥90mm, which can be used as fire walls with a fire resistance limit of 2h. The thickness of the integrated column and wall panels is ≥150mm, which can be used as fire walls with a fire resistance limit of 3h. The thickness of the integrated column and wall panels is ≥210mm, which can be used as fire walls with a fire resistance limit of 4h. The beams and composite bottom plates of the prefabricated reinforced concrete building units are integrated into one. During production, transportation and construction, the beams form the frame of the composite bottom plates. After installation and completion, the beams and the composite plates form beam units in the direction of the frame. At the same time, the composite plates and beams form shear horizontal supports in the direction perpendicular to the frame. This greatly improves the stress of the structure and significantly improves the stress performance of the structure. The unitized prefabricated reinforced concrete frame wall building structure unit can meet the bearing capacity and seismic safety requirements by calculating it alone. With the end sealing of the prefabricated reinforced concrete building unit, the overall calculation is safer, and the components can adapt to larger production and transportation sizes. The unitized prefabricated reinforced concrete building unit The columns, wall panels and wall beams on one side are prefabricated as a whole at one time. The beams and superimposed bottom plates of the prefabricated reinforced concrete building units are prefabricated as a whole at one time. The single weight is suitable for hoisting and transportation; the hoisting installation is simplified. The work that previously required the erection of scaffolding and high-altitude operations can now be completed on the factory floor, which improves the working environment and reduces safety risks; thus greatly improving the efficiency of on-site installation. The foundation and foundation beams are separated, which facilitates the prefabrication of the cup-mouth foundation factory, and increases the assembly rate of prefabricated reinforced concrete buildings. The use of factory prefabrication can better ensure the production accuracy, thereby improving the quality, energy saving and environmental protection, and large-scale production, reducing the cost of prefabricated reinforced concrete buildings. Compared with steel structures, it is more suitable for fire prevention, anti-corrosion, strong wind (sand) areas, etc., and the maintenance frequency is reduced, which reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of the main structure of a prefabricated reinforced concrete building according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the unit plane layout of the main structure of the assembled reinforced concrete building of the embodiment shown;

[0025] Figure 3 for Figure 1 A schematic cross-sectional view of the second unit of the main structure of the prefabricated reinforced concrete building in the illustrated embodiment;

[0026] Figure 4 for Figure 1 A three-dimensional schematic diagram of the installation construction process of the second unit of the main structure of the prefabricated reinforced concrete building in the illustrated embodiment.

[0027] In the figure: 1-unitized prefabricated reinforced concrete building body, 11-partition wall, 2-prefabricated reinforced concrete building unit, 21-plain concrete leveling cushion, 22-foundation, 23-integrated column and wall panel, 231-column, 232-wall panel, 233-foundation beam, 234-wall beam, 235-parapet, 236-embedded mounting bolts, 24-integrated composite bottom plate beam, 241-composite bottom plate, 242-peripheral beam, 243-support beam, 25-connecting steel plate, 26-secondary grouting composite panel, 3-end seal. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] See attached Figure 1-4 This embodiment includes a unitized prefabricated reinforced concrete building body 1, which includes a plurality of prefabricated reinforced concrete building units 2, each adjacent prefabricated reinforced concrete building unit 2 is interconnected, and the outermost prefabricated reinforced concrete building unit 2 is closed by an end seal 3.

[0030] This embodiment includes 12 prefabricated reinforced concrete building units 2, each of which has a size of 3m (length) x 9m (width).

[0031] The assembled reinforced concrete building unit 2 includes a plain concrete leveling cushion 21 at the bottom, a foundation 22 is provided on the plain concrete leveling cushion 21, an integrated column wall panel 23 is provided on the foundation 22, an integrated composite bottom plate beam 24 is provided on the upper part of the integrated column wall panel 23, and a connecting steel plate 25 and a secondary grouting composite panel 26 are provided on the integrated composite bottom plate beam 24;

[0032] The single integrated column wall panel 23 comprises two columns 231 arranged on the foundation, a wall panel 232 is arranged between the two columns 231, a foundation beam 233 is arranged at the bottom of the wall panel 232, a wall beam 234 is arranged at the top, a parapet 235 is arranged on the wall beam 234, and a pre-buried installation bolt 236 is arranged on the column 231;

[0033] Among them, each prefabricated reinforced concrete building unit 2 includes 2 integrated column wall panels 23, 1 integrated composite bottom plate beam 24, 2 plain concrete leveling pads 21, 2 foundations 22, 8 embedded installation bolts 236, 2 connecting steel plates 25, and 1 secondary grouting and composite panel 26.

[0034] The integrated laminated floor beam 24 comprises a laminated floor 241, a peripheral beam 242 is provided around the laminated floor 241, and a support beam 243 is provided at the bottom of the laminated floor 241;

[0035] The end seal 3 has the same structure as the integrated column wall panel 23 .

[0036] The foundation 22 is a prefabricated cup mouth foundation, and a hoisting hole is provided at the lower part of the cup mouth foundation.

[0037] The outer side of the integrated column wall panel 23 is provided with an energy-saving and heat-insulating decorative integrated panel to meet the requirements of energy-saving and heat-insulating exterior decoration of the building.

[0038] The integrated column wall panel 23 is also provided with reserved openings to meet the requirements of setting doors and windows in the building.

[0039] The pre-buried pipes inside the integrated column wall panel 23 are used to meet the requirements of water, electricity, heating and ventilation of the building.

[0040] The integrated column wall panel 23 is provided with a water retaining plate, the overlapping panel is turned up to the water retaining plate, and the waterproof on the overlapping panel is turned up to the water retaining plate and inserted into the gap between the overlapping panel and the water retaining plate to better meet the requirements of building waterproofing.

[0041] The thickness of the integrated column wall panel 23 is 90 mm, and can be used as a fire wall with a fire resistance limit of 2h.

[0042] The unitized assembled reinforced concrete building body 1 is provided with a partition wall 11 to meet the requirements of building separation.

[0043] The installation method of this embodiment includes the following steps:

[0044] Step 1: compact the soil at the bottom of the plain concrete leveling cushion 21, with a compaction coefficient of ≥0.97; then pour a layer of C15 plain concrete leveling cushion 21, with each side of the plane of the plain concrete leveling cushion 21 being 100mm larger than each side of the bottom surface of the cup-mouth foundation 22, and the height being not less than 100mm, to initially adjust the bottom elevation of the cup-mouth foundation;

[0045] Step 2: hoist the prefabricated cup-mouth foundation 22 and install it at the designed position on the on-site plain concrete leveling cushion 21;

[0046] Step 3: Use fine stone concrete to accurately level the bottom plane elevation of the cup-mouth foundation 22. After the fine stone concrete solidifies, hoist the integrated column wall panel 23. The lower column of the integrated column wall panel 23 is installed in the designed position in the cup-mouth foundation 22 on site and preliminarily fixed. After the lower column of the integrated column wall panel 23 is installed and adjusted, the cup-mouth foundation 22 is fixed with fine stone concrete.

[0047] Step 4: After the fine stone concrete of the cup-shaped foundation 22 is filled and solidified, the integrated composite bottom plate beam 24 is hoisted, and the reserved bolt holes on the integrated composite bottom plate beam 24 are aligned with the embedded mounting bolts 236 of the column 231 on the upper part of the integrated column wall panel 23, and the integrated composite bottom plate beam 24 is placed on the integrated column wall panel 231 through the embedded mounting bolts 236, and then the integrated composite bottom plate beam 24 and the integrated column wall panel 23 and each assembled reinforced concrete building unit 2 are connected and fixed together by connecting steel plates 25 and nuts;

[0048] Step 5: Pour grouting material or impermeable fine stone concrete into the reserved bolt holes, the gaps reserved for each prefabricated reinforced concrete building unit 2, the integrated composite bottom plate beam 24 and the integrated column wall panel 23. When pouring grouting material or impermeable fine stone concrete into the reserved bolt holes, the gaps reserved for each prefabricated reinforced concrete building unit 2, the integrated composite bottom plate beam 24 and the integrated column wall panel 23, leave a 20-40mm gap close to the roof waterproof side;

[0049] Step 6: After the grouting material and / or impermeable fine stone concrete solidifies, reserve a 20-40mm gap near the roof waterproof side, apply waterproof coating or paste in the gap, lay out the composite panels and anti-edge steel bars, and then cast the composite panels and anti-edge. At this point, the main structure of the unitized prefabricated reinforced concrete building is installed.

[0050] In the third step, when the partition wall 11 adopts a prefabricated reinforced concrete slab, the steps of the first to third steps are also referred to to complete the lower fixed foundation, piers, and lower beams, and then the lower part is fixed on the foundation, piers, and lower beams. After the upper part of the inner partition wall is temporarily supported and fixed, the fourth step is entered. After completing the fourth step, the upper part of the partition wall 11 is fixed on the upper beams, slabs, and columns; when the partition wall 11 adopts conventional lightweight partition walls and lightweight interior integrated partition walls, the lightweight interior integrated partition walls do not require secondary decoration, the weight of the single unit is not large, and it can be set on a beam or a simple foundation. It does not require large-scale lifting equipment and can be directly installed manually after the main structure is installed.

[0051] Those skilled in the art may make various modifications and variations to the present invention. If these modifications and variations are within the scope of the claims of the present invention and their equivalent technologies, these modifications and variations are still within the scope of protection of the patent of the present invention.

[0052] The contents not described in detail in the specification are prior art known to those skilled in the art.

Claims

1. An assembled reinforced concrete building main structure, comprising a unitized assembled reinforced concrete building body, characterized in that: The unitized assembled reinforced concrete building body comprises a plurality of assembled reinforced concrete building units, each adjacent assembled reinforced concrete building unit is connected to each other, and the outermost assembled reinforced concrete building unit is sealed by an end seal. The assembled reinforced concrete building unit comprises a plain concrete leveling cushion at the bottom, a foundation is arranged on the plain concrete leveling cushion, an integrated column wall panel is arranged on the foundation, an integrated composite bottom plate beam is arranged on the upper part of the integrated column wall panel, and a connecting steel plate and a secondary grouting composite panel are arranged on the integrated composite bottom plate beam; A single integrated column wall panel includes two columns arranged on a foundation, a wall panel is arranged between the two columns, a foundation beam is arranged at the bottom of the wall panel, a wall beam is arranged at the top, a parapet is arranged on the wall beam, and pre-buried installation bolts are arranged on the column; The integrated composite floor beam comprises a composite floor, peripheral beams are arranged around the composite floor, and a support beam is arranged at the bottom of the composite floor; The end seal has the same structure as the integrated column wall panel.

2. The assembled reinforced concrete building main structure according to claim 1 is characterized in that: The foundation is a prefabricated cup mouth foundation, and a hoisting hole is arranged at the lower part of the cup mouth foundation.

3. The assembled reinforced concrete building main structure according to claim 1 or 2, characterized in that: The columns of the integrated column wall panel are widened by 10-30 cm below the top surface of the foundation beam.

4. The assembled reinforced concrete building main structure according to claim 1 is characterized in that: The integrated column wall panel is provided with reserved openings.

5. The assembled reinforced concrete building main structure according to claim 1 is characterized in that: The integrated column and wall panels have internal pre-buried pipes.

6. The assembled reinforced concrete building main structure according to claim 1 is characterized in that: The integrated column wall panel is provided with a water retaining plate, the overlapping panel is turned up to the water retaining plate, and the waterproof on the overlapping panel is turned up to the water retaining plate and inserted into the gap between the overlapping panel and the water retaining plate to better meet the requirements of building waterproofing.

7. The assembled reinforced concrete building main structure according to claim 1 is characterized in that: The thickness of the integrated column and wall panels is ≥50mm; the thickness of the integrated column and wall panels is ≥140mm, which can be used as shear walls; the thickness of the integrated column and wall panels is ≥90mm, which can be used as fire walls with a fire resistance limit of 2h; the thickness of the integrated column and wall panels is ≥150mm, which can be used as fire walls with a fire resistance limit of 3h; the thickness of the integrated column and wall panels is ≥210mm, which can be used as fire walls with a fire resistance limit of 4h.

8. The assembled reinforced concrete building main structure according to claim 1 is characterized in that: The unitized assembled reinforced concrete building body is provided with partition walls to meet the requirements of building separation.

9. An installation construction method using the assembled reinforced concrete building main structure described in claim 1-8, characterized in that: The following steps are involved: Step 1: Tamp the soil at the bottom of the plain concrete leveling cushion layer, with a compaction coefficient of ≥0.97; then pour a layer of C15 plain concrete leveling cushion layer, with each side of the plain concrete leveling cushion layer being 100mm larger than the bottom surface of the cup-mouth foundation on each side, and the height being not less than 100mm, to initially adjust the bottom elevation of the cup-mouth foundation; Step 2: Prefabricate the cup-shaped foundation and hoist it to the designed position on the on-site plain concrete leveling cushion; Step 3: Use fine stone concrete to accurately level the bottom plane elevation of the cup foundation. After the fine stone concrete solidifies, hoist the integrated column wall panel. The lower column of the integrated column wall panel is installed at the designed position in the cup foundation on site and initially fixed. After the lower column of the integrated column wall panel is installed and adjusted, the fine stone concrete of the cup foundation is grouted and fixed; Step 4: After the fine stone concrete of the cup-mouth foundation is solidified, the integrated composite floor beam is hoisted. After the reserved bolt holes on the integrated composite floor beam are aligned with the embedded installation bolts of the columns on the upper part of the integrated column wall panel, the integrated composite floor beam is placed on the integrated column wall panel through the embedded installation bolts, and then the integrated composite floor beam, the integrated column wall panel and each assembled reinforced concrete building unit are connected and fixed together by connecting steel plates and nuts; Step 5: Pour grouting material or impermeable fine stone concrete into the reserved bolt holes, the gaps reserved for each prefabricated reinforced concrete building unit, the integrated composite bottom plate beam and the integrated column wall panels. When pouring grouting material or impermeable fine stone concrete into the reserved bolt holes, the gaps reserved for each prefabricated reinforced concrete building unit, the integrated composite bottom plate beam and the integrated column wall panels, leave a 20-40mm gap close to the roof waterproof side; Step 6: After the grouting material and / or impermeable fine stone concrete solidifies, reserve a 20-40mm gap near the roof waterproof side, apply waterproof coating or paste in the gap, lay out the composite panels and anti-edge steel bars, and then cast the composite panels and anti-edge. At this point, the main structure of the unitized prefabricated reinforced concrete building is installed.

10. The installation construction method of the assembled reinforced concrete building main structure according to claim 9 is characterized in that: In the third step, when the partition wall adopts assembled reinforced concrete slabs, the steps of the first to third steps are also referred to to complete the lower fixed foundation, piers, and lower beams, and then the lower part is fixed on the foundation, piers, and lower beams. After the upper part of the inner partition wall is temporarily supported and fixed, the fourth step is entered. After completing the fourth step, the upper part of the partition wall is fixed on the upper beams, slabs, and columns; when the partition wall adopts conventional lightweight partition walls and lightweight interior integrated partition walls, the lightweight interior integrated partition walls do not require secondary decoration, the weight of the single unit is not large, and it can be set on a beam or a simple foundation. It does not require large-scale lifting equipment and can be directly installed manually after the main structure is installed.

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