Construction method for precast reinforced concrete wall with embedded steel bone bolt connection form
By adopting embedded steel bolt connections in prefabricated reinforced concrete shear walls, the problems of node connection difficulty and quality control defects in the prior art are solved, and fast and reliable connection and high-quality installation of upper and lower sheet walls are achieved.
Patent Information
- Application Number
- CN202210950709.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-08-09
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2042-08-09
AI Technical Summary
The existing prefabricated reinforced concrete shear wall construction methods are difficult in node connections and hidden acceptances, and quality control is prone to defects, especially the problems of untight grouting and untightening of fine stone concrete, resulting in defects in connection between the upper and lower shear walls.
The prefabricated reinforced concrete shear wall construction method adopts the form of embedded steel bolt connections. By setting up high-strength bolt connections in the prefabricated wall, the node connection between the upper and lower plates is ensured to be reliable, and the connection quality and installation speed are improved through the design of the prefabricated wall.
It realizes a fast and reliable connection between the upper and lower prefabricated walls, improves the structural connection stress performance, makes concealed acceptance simpler and more reliable, and avoids the problems of grouting and fine stone concrete not compacted.
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Figure CN115341688B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a construction method for a reinforced concrete shear wall, and more specifically, to a construction method for a precast reinforced concrete shear wall with an embedded steel skeleton bolt connection form. Background Art
[0002] Currently, precast reinforced concrete shear wall bodies mainly focus on the shear walls of the above-ground structure. The node connection forms of the shear wall structure of the basement exterior wall mainly include the following three types: the steel bar sleeve grouting connection form, the steel bar slurry anchor lap joint connection form, and the double-sided composite shear wall connection form. The first two are the shear wall connection forms in the precast concrete technology standard GBT51231-2016 specification, and the third is a precast reinforced concrete shear wall connection form newly developed by various precast concrete processing plants in the past two years. The connection methods between these three shear walls are all connected through the form of steel bars. Among them, the first two are connected through sleeve and slurry anchor followed by grouting treatment; the third is connected by inserting steel bars into the middle of the upper and lower composite shear walls, and then connected by pouring fine aggregate concrete. The steel bar connection treatment methods of these three precast reinforced concrete shear wall construction methods all have certain difficulties in node connection and concealed acceptance, and quality control is prone to defects. The first two types of grouting are not dense, and the fine aggregate concrete poured in the third type is not dense, etc., resulting in defects in the connection between the upper and lower two shear walls.
[0003] Therefore, the known reinforced concrete shear wall structure methods have the above-mentioned various inconveniences and problems. Summary of the Invention
[0004] The purpose of the present invention is to provide a safe and reliable construction method for a precast reinforced concrete shear wall with an embedded steel skeleton bolt connection form.
[0005] To achieve the above purpose, the technical solution of the present invention is:
[0006] A construction method for a precast reinforced concrete wall with an embedded steel skeleton bolt connection form, which is characterized by including the following steps:
[0007] a. Fabricate the upper embedded bolt connection steel skeleton of the precast reinforced concrete shear wall, including:
[0008] (1). Prepare a number of rectangular first steel plates (24), and each set a circular hole (22) with a diameter of Φ40mm in the middle at a distance of 50mm from both ends of the first steel plate in the length direction. The circular holes are used for passing steel tie bars;
[0009] (2) Prepare several strip-shaped second steel plates (25). At a position 100 mm from the top end of the second steel plate, four high-strength bolt holes (23) of M12 or M16 are opened. Below the high-strength bolt holes, one elliptical hole (21) of 102 mm × 20 mm is opened. One round hole (22) is opened in the middle and at the bottom of the second steel plate respectively. The round holes are used for passing steel tie bars.
[0010] (3) Prepare several rectangular third steel plates (26). At the middle part 150 mm from both ends in the length direction of the third steel plate, round holes (22) are opened respectively. The distance between the two round holes is 200 mm. The round holes are used for passing steel tie bars.
[0011] (4) According to the width of two steel skeletons arranged in the designed concrete wall, prepare several rectangular fourth steel plates (27) for fixed connection between the two steel skeletons.
[0012] (5) Fabricate the first steel skeleton: Arrange the strip-shaped second steel plates (25) vertically from one side to the other side. The interval between adjacent second steel plates is 300 mm. The bottom end of the second steel plate is perpendicularly welded and fixed to the horizontally arranged third steel plate (26), and the weld height is 10 mm. The middle part of the second steel plate is perpendicularly welded and fixed to the horizontally arranged first steel plate (24) to make the first steel plate into two horizontally arranged transverse steel plates with intervals. Fabricate the second steel skeleton in the same way. Then arrange the two steel skeletons correspondingly, and use several fourth steel plates (27) to weld and connect the middle parts of the two steel skeletons. The welding connection points of the fourth steel plates (27) are set at the positions of the transverse steel plates, thus fabricating the upper lattice steel skeleton of the precast reinforced concrete shear wall.
[0013] b. Fabricate the lower embedded bolt-connected steel skeleton of the precast reinforced concrete shear wall. The fabrication method of the lower embedded bolt-connected steel skeleton is exactly the same as the fabrication method of the upper embedded bolt-connected steel skeleton of the precast reinforced concrete shear wall in step a. The difference is that the strip-shaped fifth steel plate (29) is used to replace the strip-shaped second steel plate (25), and the sixth steel plate (30) is used to replace the fourth steel plate (27) to fabricate the lower embedded lattice steel skeleton of the precast reinforced concrete shear wall.
[0014] c. Fabricate the precast reinforced concrete shear wall with an embedded steel bar bolt connection form:
[0015] (1) Fabricate the first steel mesh sheet (19). In the non-reinforcement encryption area set in the first steel mesh sheet, grade III steel Φ12@200, single-layer bidirectional steel bars are used. In the reinforcement encryption area set, grade III steel Φ12@100, single-layer bidirectional (12) are used.
[0016] (2) Embed the bolt - connected steel skeleton at the upper part of the prefabricated reinforced concrete shear wall and the bolt - connected steel skeleton at the lower part of the prefabricated reinforced concrete shear wall, and install them respectively above and below inside the prefabricated reinforced concrete shear wall;
[0017] (3) Fabricate the second steel mesh sheet (20). In the non - steel - encrypted area of the second steel mesh sheet, grade - III steel Φ12@200 is used, single - layer and two - way. In the steel - encrypted area, grade - III steel Φ12@100 is used, single - layer and two - way (12). Make the second steel mesh sheet cooperate with the first steel mesh sheet and clamp and install them on both sides of the prefabricated reinforced concrete shear wall;
[0018] (4) Install the stirrups (7). The stirrups are arranged in a plum - blossom shape between the bolt - connected steel skeleton at the upper part of the prefabricated reinforced concrete shear wall and the bolt - connected steel skeleton at the lower part of the prefabricated reinforced concrete shear wall;
[0019] (5) Place the steel bars and steel members of the prefabricated reinforced concrete shear wall with the embedded steel - bone bolt - connection form, which are processed and fabricated, into the finished mold with the height (15)×width (14)×thickness (18) of the shear wall designed, pour C35 concrete, and carry out sprinkler curing or steam curing. After reaching the strength, remove the formwork and hoist it to the finished product storage area;
[0020] d. Installation of the finished upper and lower prefabricated reinforced concrete shear walls with the embedded steel - bone bolt - connection form:
[0021] (1) After laying the precast floor slab (3) at both ends of the lower prefabricated reinforced concrete shear wall (2), lay the upper - layer steel bars of the precast floor slab, grade - III steel Φ10@100, then pour the concrete of the cast - in - place part (4) of the composite slab and carry out curing;
[0022] (2) After the concrete of the cast - in - place part (4) of the composite slab reaches the strength, align the M12 or M16, 10.9 - grade bearing - type high - strength bolt holes (23) at the lower part of the upper prefabricated reinforced concrete shear wall (1) with the embedded steel - bone bolt - connection form and the M12 or M16, 10.9 - grade bearing - type high - strength bolt holes (23) at the upper part of the lower prefabricated reinforced concrete shear wall with the embedded steel - bone bolt - connection form, install the M12 or M16 high - strength bolt connection pair (9), and at the same time install the structural steel bars of the post - cast part of the shear wall, grade - III steel Φ12, and stirrups, grade - III steel Φ12@200 (16);
[0023] (3) After closing the post - cast part (5) of the shear wall with formwork, use fine aggregate concrete (C40) or C60 grouting material (5) with a strength grade one higher than that of the shear wall. After reaching the strength, remove the formwork and carry out curing;
[0024] (4) Repeat the above installation construction process for the upper and lower finished prefabricated reinforced concrete shear walls (1, 2) with the embedded steel - bone bolt - connection form.
[0025] The construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form of the present invention can also be further realized by adopting the following technical measures.
[0026] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the steel plate is made of Q235 steel plate.
[0027] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the thickness of the steel plate is ≥12mm.
[0028] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the steel bars of the precast reinforced concrete shear wall are grade III steel Φ12@200, double-layer and double-directional, and the stirrups are grade III steel Φ12@200×200.
[0029] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the steel bar encryption zone is grade III steel Φ12@100.
[0030] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the first steel plate is 300mm×100mm×12mm.
[0031] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the second steel plate is 830mm×100mm×12mm.
[0032] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the third steel plate is Lmm×100mm×12mm, where L is the width of the shear wall.
[0033] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the fourth steel plate is 116mm×100mm×12mm.
[0034] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the fifth steel plate is 700mm×100mm×12mm.
[0035] For the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form described above, the sixth steel plate is 98mm×100mm×12mm.
[0036] After adopting the above technical solutions, the construction method of the precast reinforced concrete shear wall with the embedded steel skeleton bolt connection form of the present invention has the following advantages:
[0037] 1. The connection form using high-strength bolts can very well ensure the connection reliability of the nodes between the upper shear wall and the lower shear wall.
[0038] 2. The precast wall combines the design methods of reinforced concrete and steel plate concrete, which can well ensure the connection quality between the upper and lower precast walls and speed up the installation speed of workers.
[0039] 3. It can enable the upper precast reinforced concrete shear wall and the lower precast reinforced concrete shear wall to be quickly connected at the same time, and has good structural connection stress performance, making the connection of the precast wall structure nodes more visible and the concealed acceptance work simpler and more reliable. Description of the Drawings
[0040] Figure 1 Plan view of the precast reinforced concrete shear wall upper embedded bolt connection steel skeleton structure of the embodiment of the present invention;
[0041] Figure 2 is Figure 1 side view;
[0042] Figure 3 Schematic diagram of the precast reinforced concrete shear wall upper embedded bolt connection steel skeleton;
[0043] Figure 4 Plan view of the precast reinforced concrete shear wall lower embedded bolt connection steel skeleton structure of the embodiment of the present invention;
[0044] Figure 5 is Figure 3 side view;
[0045] Figure 6 Effect diagram of the precast reinforced concrete shear wall lower embedded bolt connection steel skeleton;
[0046] Figure 7 Precast reinforced concrete shear wall diagram with embedded steel bone bolt connection form of the embodiment of the present invention;
[0047] Figure 8 is Figure 5 cross-sectional view taken along A-A in
[0048] Figure 9 Effect diagram of the precast reinforced concrete shear wall with embedded steel bone bolt connection form;
[0049] Figure 10 Connection schematic diagram of the precast reinforced concrete shear wall with embedded steel bone bolt connection form of the embodiment of the present invention;
[0050] Figure 11 is Figure 7 right view;
[0051] Figure 12 is Figure 7 the left view of;
[0052] Figure 13 the precast reinforced concrete shear wall with embedded steel frame bolt connection form of the embodiment of the present invention.
[0053] In the figure:
[0054] 1 - The upper precast reinforced concrete shear wall with embedded steel frame bolt connection form;
[0055] 2 - The lower precast reinforced concrete shear wall with embedded steel frame bolt connection form;
[0056] 3 - The precast floor slab;
[0057] 4 - The cast-in-place part of the composite slab;
[0058] 5 - The post-cast part at the bottom of the shear wall;
[0059] 6 - The upper embedded bolt connection steel frame of the upper precast reinforced concrete shear wall;
[0060] 7 - The tie bar;
[0061] 8 - The lower embedded bolt connection steel frame of the upper precast reinforced concrete shear wall;
[0062] 9 - The high-strength bolt connection pair;
[0063] 10 - The upper embedded bolt connection steel frame of the lower precast reinforced concrete shear wall;
[0064] 11 - The lower embedded bolt connection steel frame of the lower precast reinforced concrete shear wall;
[0065] 12 - The steel bar densification area, grade III steel Φ12@100;
[0066] 13 - The edge-sealing steel bars of the precast reinforced concrete shear wall, grade III steel 2Φ12;
[0067] 14 - The width of the shear wall (determined according to the structural design);
[0068] 15 - The height of the shear wall (varies with the storey height);
[0069] 16 - The structural steel bars of the post-cast part of the shear wall, tie bar grade III steel Φ12@200;
[0070] 17 - The steel bars of the lower precast reinforced concrete shear wall, grade III steel Φ12@200, double-layer and double-directional, tie bar grade III steel Φ12@200×200;
[0071] 18 - 200mm (or determined according to the structural design).
[0072] 19 - First steel mesh
[0073] 20 - Second steel mesh
[0074] 21 - Oval hole
[0075] 22 - Round hole
[0076] 23 - High-strength bolt hole
[0077] 24 - First steel plate
[0078] 25 - Second steel plate
[0079] 26 - Third steel plate
[0080] 27 - Fourth steel plate
[0081] 28 - Embedded bolt-connected steel skeleton at the upper part of precast reinforced concrete shear wall
[0082] 29 - Fifth steel plate
[0083] 30 - Sixth steel plate
[0084] 31 - Embedded bolt-connected steel skeleton at the lower part of precast reinforced concrete shear wall
[0085] 32 - Precast reinforced concrete shear wall Detailed implementation mode
[0086] The following further describes the present invention in conjunction with embodiments and their accompanying drawings. Embodiment
[0087] The construction method of the precast reinforced concrete shear wall with an embedded steel bone bolt connection form of the present invention includes the following steps:
[0088] a. Fabricating the embedded bolt-connected steel skeleton at the upper part of the precast reinforced concrete shear wall includes:
[0089] (1). Prepare a number of first steel plates 24. The first steel plate is a Q235 steel plate with dimensions of 300mm×100mm×12mm. At both ends 50mm along the long direction of the steel plate and in the middle of the short direction, two round holes 22 with a diameter of Φ40mm are opened. The function of the round holes is to pass through steel tie bars.
[0090] (2). Prepare a number of second steel plates 25. The second steel plate is a Q235 steel plate with dimensions of 830mm×100mm×12mm. Along the length direction from left to right, 4 M12 or M16 high-strength bolt holes 23 are successively opened at 100mm from the front end, an oval hole 21 with dimensions of 102mm×20mm is opened at 114mm from the left side, and 2 round holes 22 with a diameter of Φ40mm are opened at 430mm and 730mm from the left side. The function of the round holes is to pass through steel tie bars.
[0091] (3). Prepare two third steel plates 26, with the third steel plate being a Q235 steel plate of L mm×100 mm×12 mm, where L is the width of the shear wall. At a distance of 150 mm from both ends, round holes 22 are opened at intervals of 200 mm. The function of the round holes is to pass through steel tie bars.
[0092] (4). Prepare several fourth steel plates 27, with the fourth steel plate being a Q235 steel plate of 116 mm×100 mm×12 mm.
[0093] (5). Starting from the left side, weld and connect the fabricated second steel plate 25 vertically upward at intervals of 300 mm in sequence with 300 mm×100 mm×12 mm and L mm×100 mm×12 mm steel plates 26. The weld height is 10 mm. After fabricating the first piece of the steel skeleton, fabricate the second piece of the steel skeleton in the same way. Then, use 116 mm×100 mm×12 mm fourth steel plates 27 to weld and connect at the vertical and horizontal steel sheet joints of the two pieces of steel skeletons to form a bolt - connected steel skeleton embedded in the upper part of the precast reinforced concrete shear wall.
[0094] Please refer to Figures 1-3 , Figure 1 which is the structural plan view of the bolt - connected steel skeleton embedded in the upper part of the precast reinforced concrete shear wall in the embodiment of the present invention, Figure 2 is Figure 1 the side view of Figure 3 and is the effect diagram of the bolt - connected steel skeleton embedded in the upper part of the precast reinforced concrete shear wall.
[0095] b. Fabricating the bolt - connected steel skeleton embedded in the lower part of the precast reinforced concrete shear wall includes:
[0096] (1). Prepare several first steel plates 24, with the first steel plate being a Q235 steel plate of 300 mm×100 mm×12 mm. At 50 mm from both ends along the long direction of the steel plate, two round holes 22 with a diameter of Φ40 mm are opened in the middle of the short direction. The function of the Φ40 mm round holes is to pass through steel tie bars.
[0097] (2). Prepare several fifth steel plates 29, with the fifth steel plate being a Q235 steel plate of 700 mm×100 mm×12 mm. Along the length direction from right to left, 4 M12 or M16 high - strength bolt holes 23 are opened at a distance of 100 mm from the front end in sequence, and 2 Φ40 mm round holes 22 are opened at a distance of 300 mm and 600 mm from the left side. The function of the round holes is to pass through steel tie bars.
[0098] (3) Prepare two pieces of third steel plates 26. The third steel plate is a Q235 steel plate with dimensions of L mm × 100 mm × 12 mm (where L is the width of the shear wall). At a distance of 150 mm from both ends, circular holes 22 with a diameter of Φ40 mm are opened at intervals of 200 mm. The function of the circular holes is to pass through steel tie bars.
[0099] (4) Prepare several sixth steel plates 30. The sixth steel plate is a Q235 steel plate with dimensions of 98 mm × 100 mm × 12 mm.
[0100] (5) Starting from the left, weld the fabricated fifth steel plate 29 vertically downward at intervals of 300 mm to the fourth steel plates 27 with dimensions of 300 mm × 100 mm × 12 mm and L mm × 100 mm × 12 mm. The weld height is 10 mm to fabricate the first piece of steel skeleton. Fabricate the second piece of steel skeleton in the same direction. Then, use the sixth steel plates 30 to weld and connect at the intersections of the longitudinal and transverse steel sheets of the two steel frames to form a lattice steel skeleton embedded in the lower part of the precast reinforced concrete shear wall.
[0101] Please refer to Figures 4-6 , Figure 4 which is the plan view of the lattice steel skeleton structure with bolt connections embedded in the lower part of the precast reinforced concrete shear wall according to the embodiment of the present invention; Figure 5 is Figure 3 the side view of Figure 6 which is the effect diagram of the lattice steel skeleton with bolt connections embedded in the lower part of the precast reinforced concrete shear wall.
[0102] c. Fabricate a precast reinforced concrete shear wall with an embedded steel bar bolt connection form:
[0103] (1). Fabricate the first steel bar mesh 19. In the non-reinforcement encryption area, grade III steel Φ12@200 is used, single-layer and double-directional. In the reinforcement encryption area, grade III steel Φ12@100 is used, single-layer and double-directional.
[0104] (2). Install the fabricated lattice steel skeleton with bolt connections embedded in the upper part of the precast reinforced concrete shear wall and the lattice steel skeleton with bolt connections embedded in the lower part of the precast reinforced concrete shear wall respectively inside the upper and lower parts of the shear wall.
[0105] (3). Fabricate the second steel bar mesh 20. In the non-reinforcement encryption area, grade III steel Φ12@200 is used, single-layer and double-directional. In the reinforcement encryption area, grade III steel Φ12@100 is used, single-layer and double-directional.
[0106] (4) Install the stirrups 7. The stirrups are grade III steel Φ12@200×200 and are arranged in a plum blossom shape.
[0107] (5) The steel-embedded bolt-connected precast reinforced concrete shear wall with the processed and fabricated steel bars and steel skeleton is placed in a finished mold with a size of 15 times the shear wall height × 14 times the shear wall width × 18 times the shear wall thickness. Then, C35 concrete is poured, and water spraying curing or steam curing is carried out. After reaching the strength, the formwork is removed and hoisted to the finished product storage area.
[0108] Please refer to Figures 7-9 and Figure 13 , Figure 7 which is the steel-embedded bolt-connected precast reinforced concrete shear wall of the embodiment of the present invention; Figure 8 is Figure 5 the sectional view taken along A-A in Figure 9 and is the effect drawing of the steel-embedded bolt-connected precast reinforced concrete shear wall.
[0109] Figure 13 which is the steel-embedded bolt-connected precast reinforced concrete shear wall of the embodiment of the present invention.
[0110] d. Installation of the upper and lower finished steel-embedded bolt-connected precast reinforced concrete shear walls:
[0111] (1) After the precast floor slab 3 is laid at both ends of the lower precast reinforced concrete shear wall 2, the upper-layer steel bars of the precast floor slab (grade-III steel Φ10@100) are laid, and then the concrete C30 of the cast-in-place part 4 of the composite slab is poured and cured.
[0112] (2) After the concrete of the cast-in-place part 4 of the composite slab reaches the strength, the lower M12 or M16, 10.9-grade bearing-type high-strength bolt holes 23 of the upper steel-embedded bolt-connected precast reinforced concrete shear wall 1 are aligned with the upper M12 or M16, 10.9-grade bearing-type high-strength bolt holes 23 of the lower steel-embedded bolt-connected precast reinforced concrete shear wall, and the M12 or M16 high-strength bolt connection pairs 9 are installed. At the same time, the structural steel bars 16 of the post-cast part of the shear wall are installed, which are grade-III steel Φ12, and the stirrups are grade-III steel Φ12@200;
[0113] (3) After the post-cast part 5 at the bottom of the shear wall is closed with a formwork, C40 fine aggregate concrete or C60 grouting material with a strength grade one higher than that of the shear wall is used. After reaching the strength, the formwork is removed for curing.
[0114] (4) The above installation construction process is repeated for the upper and lower finished steel-embedded bolt-connected precast reinforced concrete shear walls 1 and 2.
[0115] Please refer to Figures 10-12 , Figure 10 which is the connection schematic diagram of the steel-embedded bolt-connected precast reinforced concrete shear wall of the embodiment of the present invention; Figure 11 is Figure 7 the right view ofFigure 12 is Figure 7 the left view of
[0116] The present invention has substantial features and remarkable technical progress. The construction method of the precast reinforced concrete shear wall with the embedded steel bone bolt connection form of the present invention is different from the steel bar connection methods of the standard steel bar sleeve grouting connection form, the steel bar slurry anchor lap joint connection form and the double-sided composite shear wall connection form. Instead, the connection form of high-strength bolts is adopted, which can very well ensure the connection reliability of the nodes between the upper shear wall and the lower shear wall, can well ensure the connection quality of the upper and lower precast walls, and speed up the installation speed of workers. Its precast wall combines the design methods of reinforced concrete and steel plate concrete. The construction method of the precast reinforced concrete shear wall with the embedded steel bone bolt connection form of the present invention can enable the upper precast reinforced concrete shear wall and the lower precast reinforced concrete shear wall to be quickly and reliably connected at the same time, and has good structural connection stress performance, enabling the precast concrete wall structure nodes to have large and good structural stress performance. At the same time, the connection of the precast wall structure nodes is more visible, and the concealed acceptance work is simpler and more reliable.
[0117] The above embodiments are only for illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various transformations or changes without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by each claim.
Claims
1. A construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form, characterized in that It includes the following steps: a. Fabricate a bolt - connected steel skeleton embedded in the upper part of a precast reinforced concrete shear wall, including: (1). Prepare several rectangular first steel plates (24), and set circular holes (22) with a diameter of Φ40mm at the middle part 50mm away from both ends of the first steel plate in the length direction. The circular holes are used for passing steel tie - bars; (2). Prepare several strip - shaped second steel plates (25), and open 4 high - strength bolt holes (23) of M12 or M16 at a position 100mm away from the top end of the second steel plate. Open 1 elliptical hole (21) with a size of 102mm×20mm below the high - strength bolt holes, and open one circular hole (22) at the middle part and the bottom end of the second steel plate respectively. The circular holes are used for passing steel tie - bars; (3). Prepare several rectangular third steel plates (26), and open circular holes (22) at the middle part 150mm away from both ends of the third steel plate in the length direction. The distance between the two circular holes is 200mm. The circular holes are used for passing steel tie - bars; (4). According to the width of two steel skeletons arranged in the designed concrete wall, prepare several rectangular fourth steel plates (27) for fixed connection between the two steel skeletons; (5). Fabricate the first steel skeleton: Arrange the strip - shaped second steel plates (25) vertically from one side to the other side, with an interval of 300mm between adjacent second steel plates. Weld and fix the bottom end of the second steel plate perpendicularly to the horizontally arranged third steel plate (26), and the weld height is 10mm. Weld and fix the middle part of the second steel plate perpendicularly to the horizontally arranged first steel plate (24) to make the first steel plate into two horizontally arranged transverse steel plates with intervals. Fabricate the second steel skeleton in the same way, and then arrange the two steel skeletons correspondingly, and weld and connect them with several fourth steel plates (27) at the middle part of the two steel skeletons. The welding connection points of the fourth steel plates (27) are set at the positions of the transverse steel plates, thus fabricating a lattice - type steel skeleton in the upper part of the precast reinforced concrete shear wall; b. Fabricate a bolt - connected steel skeleton embedded in the lower part of a precast reinforced concrete shear wall. The fabrication method of the lower bolt - connected steel skeleton is exactly the same as the fabrication method of the bolt - connected steel skeleton embedded in the upper part of the precast reinforced concrete shear wall in step a. The difference is that the strip - shaped fifth steel plate (29) is used to replace the strip - shaped second steel plate (25), and the sixth steel plate (30) is used to replace the fourth steel plate (27) to fabricate a lattice - type steel skeleton embedded in the lower part of the precast reinforced concrete shear wall; c. Fabricate a precast reinforced concrete shear wall with an embedded steel - bone bolt - connection form: (1). Fabricate the first steel mesh sheet (19). In the non - steel - encrypted area set in the first steel mesh sheet, grade - III steel Φ12@200, single - layer and two - way steel bars are used, and in the steel - encrypted area, grade - III steel Φ12@100, single - layer and two - way (12) are used; (2). Install the bolt - connected steel skeleton embedded in the upper part of the precast reinforced concrete shear wall and the bolt - connected steel skeleton embedded in the lower part of the precast reinforced concrete shear wall respectively above and below inside the precast reinforced concrete shear wall; (3) Fabricate the second steel bar mesh sheet (20). For the non-reinforcement encrypted area in the second steel bar mesh sheet, grade III steel Φ12@200 is used, arranged in a single layer and two-way. For the reinforcement encrypted area, grade III steel Φ12@100 is used, arranged in a single layer and two-way (12), so that the second steel bar mesh sheet and the first steel bar mesh sheet are cooperatively clamped and installed on both sides of the precast reinforced concrete shear wall; (4) Install the stirrups (7). The stirrups are arranged in a plum blossom shape between the upper embedded bolt-connected steel skeleton in the precast reinforced concrete shear wall and the lower embedded bolt-connected steel skeleton in the precast reinforced concrete shear wall; (5) Place the steel bars and steel members of the precast reinforced concrete shear wall with the embedded steel member bolt connection form, which are fabricated, into the finished product mold with the height (15)×width (14)×thickness (18) of the shear wall designed. Pour C35 concrete, and carry out watering maintenance or steam maintenance. After reaching the strength, remove the formwork and hoist it to the finished product storage area; d. Installation of the finished upper and lower precast reinforced concrete shear walls with the embedded steel member bolt connection form: (1) After laying the precast floor slab (3) at both ends of the lower precast reinforced concrete shear wall (2) with the embedded steel member bolt connection form, lay the upper layer of steel bars of the precast floor slab, grade III steel Φ10@100, and then pour the concrete of the cast-in-place part (4) of the composite slab and carry out maintenance; (2) After the concrete of the cast-in-place part (4) of the composite slab reaches the strength, align the lower M12 or M16, 10.9-grade bearing-type high-strength bolt holes (23) of the upper precast reinforced concrete shear wall (1) with the embedded steel member bolt connection form and the upper M12 or M16, 10.9-grade bearing-type high-strength bolt holes (23) of the lower precast reinforced concrete shear wall with the embedded steel member bolt connection form, install the M12 or M16 high-strength bolt connection pair (9), and at the same time install the structural steel bars of the post-cast part of the shear wall, grade III steel Φ12, and the stirrups, grade III steel Φ12@200 (16); (3) After closing the bottom post-cast part (5) of the shear wall with formwork, use C40 fine aggregate concrete or C60 grouting material with a strength grade one higher than that of the shear wall. After reaching the strength, remove the formwork and carry out maintenance; (4) Repeat the above installation construction process for the finished upper and lower precast reinforced concrete shear walls (1, 2) with the embedded steel member bolt connection form.
2. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The steel plate is made of Q235 steel plate.
3. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The thickness of the steel plate is ≥12mm.
4. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The steel bars of the precast reinforced concrete shear wall are grade III steel Φ12@200, arranged in a double layer and two-way, and the stirrups are grade III steel Φ12@200×200.
5. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The first steel plate is 300mm×100mm×12mm.
6. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The second steel plate is 830mm×100mm×12mm.
7. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The third steel plate is Lmm×100mm×12mm, where L is the width of the shear wall.
8. The construction method for a precast reinforced concrete wall with an embedded steel bone bolt connection form according to claim 1, characterized in that, The fourth steel plate is 116mm×100mm×12mm.
9. The construction method of the precast reinforced concrete wall with the embedded steel bone bolt connection form as described in claim 1, characterized in that, The fifth steel plate is 700mm×100mm×12mm.
10. The construction method of the precast reinforced concrete wall with the embedded steel bone bolt connection form as described in claim 1, characterized in that, The sixth steel plate is 98mm×100mm×12mm.
Citation Information
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