An assembled building and construction method based on BIM technology

Abstract

The present invention discloses an assembled building and construction method based on BIM technology, and relates to the technical field of assembled buildings. The present invention includes a floor and a prefabricated wall. The top of the floor is provided with a plurality of groups of embedded steel bars, and the outer side of the embedded steel bars is sleeved with a positioning assembly. The bottom of the prefabricated wall is provided with a plurality of assembly holes, and the inner diameter of the assembly hole is larger than the outer diameter of the embedded steel bars. The positioning assembly includes a positioning outer cylinder and an adjustment inner cylinder, and the adjustment inner cylinder is sleeved on the embedded steel bars. The present invention controls the limiter to slide downward along the guide hole. At this time, the telescopic rod can slide toward the positioning outer cylinder. As the prefabricated wall continues to descend, the lower half of the positioning support rod hinge continues to swing inward, and the upper half of the positioning support rod hinge swings outward. The telescopic rod slides into the sliding cavity. Therefore, while ensuring the stability of the position of the prefabricated wall, the gap can be adjusted without the need to set a separate pad. The construction is simple and the construction accuracy is high.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated building and a construction method based on BIM technology. Background Art

[0002] With the rapid development of prefabricated buildings, the application of BIM technology in their design, production, construction, and operation and maintenance is becoming increasingly important. Through BIM technology, prefabricated buildings can achieve more efficient and precise design and construction, reduce potential construction risks, and improve the overall quality and management of the building. Prefabricated building components are typically manufactured in factories and transported to the construction site for assembly, resulting in a short construction cycle, easier quality control, and effective reduction of environmental pollution and construction safety risks.

[0003] A Chinese patent (publication number: CN114412206B) discloses a prefabricated building based on BIM technology, including a base; a first structural support member and a second structural support member, the first structural support member and the second structural support member are symmetrically arranged on the base, and the spacing between the output ends of the first structural support member and the second structural support member is greater than the spacing between the fixed ends of the first structural support member and the second structural support member; a verticality measuring device for measuring the angle between the structural body and the prefabricated component, the verticality measuring device being arranged on the base. Before hoisting the walls of this prefabricated building and existing prefabricated buildings, it is necessary to first measure with a level and place horizontal control elevation pads on the floor to ensure that the entire floor reaches the elevation and a certain gap is reserved between the prefabricated wall and the floor. Since building materials are affected by temperature changes, the walls will expand and contract due to heat and cold. Sufficient space must be reserved in the gap to cope with the wall movement caused by temperature changes and prevent wall cracks caused by thermal expansion and contraction. However, this method not only has low precision and low construction efficiency, but also in actual construction, each wall panel needs to be padded with a special pad, which makes production difficult. At the same time, inclined supports are needed to position and adjust the verticality of the wall during hoisting, and the construction steps are cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide an assembled building and construction method based on BIM technology.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A prefabricated building based on BIM technology includes a floor and prefabricated walls. The top of the floor is provided with multiple sets of embedded steel bars, and the outer sides of the embedded steel bars are sleeved with positioning components. The bottom of the prefabricated wall is provided with multiple sets of assembly holes, and the inner diameter of the assembly holes is larger than the outer diameter of the embedded steel bars.

[0007] The positioning assembly includes a positioning outer cylinder and an adjusting inner cylinder. The adjusting inner cylinder is sleeved on the embedded steel bar. The positioning outer cylinder is rotatably installed on the outside of the adjusting inner cylinder. The outer ring of the positioning outer cylinder is provided with multiple groups of hinged frames. The interior of the hinged frames is hinged with a positioning support rod. A tension spring is provided between the positioning support rod and the positioning outer cylinder. A sliding cavity is provided through the upper half of the positioning support rod. The interior of the sliding cavity is slidably connected to the telescopic rod. The outer ring of the positioning outer cylinder is provided with multiple groups of guide holes. The interior of the guide hole is slidably connected to a limiting member. The limiting member can slide up and down along the guide hole, and the limiting member is pressed against the telescopic rod.

[0008] Furthermore, an adjusting groove is provided in an annular shape on the outer side of the adjusting inner cylinder. The adjusting groove is arranged corresponding to the guide hole. The depth of the adjusting groove adopts a gradual design, and the limiting member can be inserted into the adjusting groove.

[0009] Furthermore, an adjusting external thread is provided at the bottom of the positioning outer cylinder, an outer thread of the adjusting external thread is connected to an adjusting wheel, a plurality of transmission grooves are provided in an annular shape on the outer side of the adjusting inner cylinder, a plurality of transmission sliders are provided in an annular shape on the inner wall of the adjusting wheel, and the transmission sliders are slidably connected in the transmission grooves.

[0010] Furthermore, two groups of pull ropes are wound around the outer side of the adjusting wheel, and the winding directions of the two groups of pull ropes are opposite.

[0011] Furthermore, the positioning support rod is a bent rod with a bending angle of 120°-150°.

[0012] Furthermore, the limiter is composed of a sliding rod portion and an arc-shaped pressing portion. The sliding rod portion can be inserted into the adjustment groove, the arc-shaped pressing portion contacts the telescopic rod, and the arc center of the arc-shaped pressing portion coincides with the rotation center of the positioning support rod.

[0013] Furthermore, a width correction head is provided at the top end of the telescopic rod.

[0014] Furthermore, a grouting hole and an overflow hole are provided through the outer side of the assembly hole, and the grouting hole is located below the overflow hole.

[0015] A method for constructing an assembled building based on BIM technology, comprising the following steps:

[0016] S1. Pre-preparation: Attach the two sets of positioning components to the embedded steel bars at the outermost edges of both ends respectively;

[0017] S2. Hoisting: Lift the prefabricated wall from the wall storage area or transport vehicle. During the lifting process, the safety of the lifting point and hook must be confirmed. When the prefabricated wall is hoisted to a height of 1m from the floor, it is slowly lowered by manual support. During the lowering process, a mirror is placed near the embedded steel bars. After the embedded steel bars are aligned with the assembly holes, it is slowly lowered into place. The prefabricated wall is pressed on the positioning assembly. The positioning assembly first accurately positions the prefabricated wall and positions the verticality. As the prefabricated wall continues to descend, the positioning assembly adjusts the gap between the prefabricated wall and the floor to a gap of 10mm to 20mm.

[0018] S3. Sealing: Press the prepared sealing material into the gap, ensuring that the material fills the entire gap tightly and evenly to avoid gaps. The inserted material should be compacted to ensure good contact with the wall and floor without leaving any gaps.

[0019] S4. Grouting: Connect the grouting pipe to the grouting hole, start the grouting equipment, and slowly and evenly inject the grouting material into the gap. Pay attention to observation during grouting to ensure that there is no leakage. When the slurry flows out of the overflow hole, seal the overflow hole, then remove the grouting pipe and seal the grouting hole. After the slurry solidifies, complete the assembly.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention arranges the positioning assembly so that the inner diameter of the assembly hole is much larger than the outer diameter of the embedded steel bar. Therefore, during assembly, the embedded steel bar can be easily inserted into the assembly hole, thereby improving assembly efficiency.

[0022] 2. The present invention presses the prefabricated wall on the lower half of the positioning support rod at the hinge, and the lower half swings inward, and the upper half of the positioning support rod at the hinge swings outward. The positioning support rod drives the telescopic rod to press against the inner wall of the assembly hole. Through the ring-shaped positioning support rod and the telescopic rod, the assembly hole can be corrected so that the axis of the assembly hole coincides with the axis of the embedded steel bar, thereby quickly realizing the positioning and verticality adjustment of the prefabricated wall. It only needs to simply fix the diagonal brace, and there is no need for the diagonal brace to have a complex structure or to apply an adjusting force to the wall. The assembly steps are simple and the assembly efficiency is high.

[0023] 3. The present invention controls the limit piece to slide downward along the guide hole. At this time, the telescopic rod can slide toward the positioning outer cylinder. As the prefabricated wall continues to descend, the lower half of the positioning support rod hinge continues to swing inward, and the upper half of the positioning support rod hinge swings outward, and the telescopic rod slides toward the inside of the sliding cavity. Therefore, while ensuring the stability of the position of the prefabricated wall, the gap can be adjusted without the need for separate pads. The construction is simple and the construction accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the building assembly of the present invention;

[0025] Figure 2 It is an exploded view of the building assembly of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the positioning component of the present invention;

[0027] Figure 4 is an exploded view of the positioning assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the positioning outer cylinder of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the regulating inner cylinder of the present invention.

[0030] Figure numerals: 1. Floor; 11. Embedded steel bars; 2. Prefabricated wall; 21. Assembly hole; 22. Grouting hole; 23. Overflow hole; 3. Positioning outer cylinder; 31. Articulated frame; 32. Tension spring; 33. Guide hole; 34. Adjusting outer thread; 4. Adjusting inner cylinder; 41. Adjusting groove; 42. Transmission slide; 5. Adjusting wheel; 51. Pull rope; 52. Transmission slider; 6. Positioning support rod; 61. Sliding cavity; 62. Telescopic rod; 7. Limiting piece. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Example 1, as Figures 1-6 As shown, a prefabricated building based on BIM technology includes a floor 1 and a prefabricated wall 2. The top of the floor 1 is provided with multiple sets of embedded steel bars 11, and the outer side of the embedded steel bars 11 is sleeved with a positioning assembly. The bottom of the prefabricated wall 2 is provided with multiple sets of assembly holes 21, and the inner diameter of the assembly hole 21 is larger than the outer diameter of the embedded steel bars 11.

[0033] The positioning assembly includes a positioning outer cylinder 3 and an adjusting inner cylinder 4. The adjusting inner cylinder 4 is sleeved on the embedded steel bar 11. The positioning outer cylinder 3 is rotatably installed on the outside of the adjusting inner cylinder 4. The outer ring of the positioning outer cylinder 3 is provided with multiple groups of hinged frames 31. The interior of the hinged frame 31 is hinged with a positioning support rod 6. A tension spring 32 is provided between the positioning support rod 6 and the positioning outer cylinder 3. A sliding cavity 61 is provided through the upper half of the positioning support rod 6. The interior of the sliding cavity 61 is slidingly connected to a telescopic rod 62. The outer ring of the positioning outer cylinder 3 is provided with multiple groups of guide holes 33. The interior of the guide hole 33 is slidingly connected to a limiting member 7. The limiting member 7 can slide up and down along the guide hole 33, and the limiting member 7 is pressed against the telescopic rod 62.

[0034] Furthermore, a grouting hole 22 and an overflow hole 23 are formed through the outer side of the assembly hole 21 , and the grouting hole 22 is located below the overflow hole 23 .

[0035] The two sets of positioning components are respectively sleeved on the embedded steel bars 11 at the outermost edges of both ends. It should be noted that when the prefabricated wall 2 is long, a positioning component can also be added in the middle, and then the prefabricated wall 2 is lifted from the wall storage area or the transport vehicle. When the prefabricated wall 2 is hoisted to a height of 1m from the floor, it is slowly lowered by manual hand-support. During the falling process, a mirror is placed near the embedded steel bars 11 to observe whether the assembly hole 21 and the embedded steel bars 11 are aligned. Since the inner diameter of the assembly hole 21 of the present invention is much larger than the outer diameter of the embedded steel bars 11, it only needs to be roughly aligned during assembly. Moreover, since the initial state of the positioning support rod 6 is that the upper half of the hinge is closed together and the lower half is tapered, when the prefabricated wall 2 is pressed on the positioning support rod 6, the prefabricated wall 2 pushes the positioning support rod 6 at the hinge The lower half swings inward and the upper half swings outward, and the upper half drives the telescopic rod 62 to press against the inner wall of the assembly hole 21. Since the limit piece 7 restricts the bottom end of the telescopic rod 62, the telescopic rod 62 applies pressure to the inner wall of the assembly hole 21. Since the positioning support rod 6 is distributed in a ring shape, the position of the assembly hole 21 can be corrected as the upper half is unfolded, so that the axis of the assembly hole 21 coincides with the axis of the embedded steel bar 11. When the assembly holes 21 at both ends coincide with the axes of the embedded steel bars 11 at both ends, the prefabricated wall 2 is accurately positioned, and the verticality can be guaranteed after the axes coincide. At this time, the wall cannot continue to descend, and the distance between the prefabricated wall 2 and the floor 1 is measured. If the distance meets the requirements, a simple diagonal brace can be directly applied to the outside of the prefabricated wall 2, and the seams and grouting can be directly performed later.

[0036] If the spacing does not meet the requirements, the control limit piece 7 is slid downward along the guide hole 33. At this time, the telescopic rod 62 can slide into the sliding cavity 61. At this time, the prefabricated wall 2 continues to descend under the action of gravity. The prefabricated wall 2 pushes the lower half of the positioning support rod 6 at the hinge to swing inward, and the upper half to swing outward. The telescopic rod 62 presses against the inner wall of the assembly hole 21 again to ensure stable positioning. However, at this time, the spacing between the prefabricated wall 2 and the floor 1 is reduced to meet the requirements. There is no need to process pads separately, and the construction efficiency is high.

[0037] Embodiment 2, based on the above embodiment, further includes: an adjusting groove 41 is opened in an annular shape on the outer side of the adjusting inner cylinder 4, the adjusting groove 41 is arranged corresponding to the guide hole 33, the depth of the adjusting groove 41 adopts a gradual design, and the limit member 7 can be inserted into the adjusting groove 41.

[0038] By rotating the adjusting inner cylinder 4, due to the large friction between the positioning support rod 6 and the bottom of the prefabricated wall 2, the adjusting inner cylinder 4 will rotate relative to the positioning outer cylinder 3, and the adjusting inner cylinder 4 will drive the adjusting groove 41 to rotate relative to the limit member 7, and the limit member 7 can be controlled to slide up and down along the guide hole 33, and the control is stable and simple.

[0039] Embodiment three, based on the above embodiment, further includes: an adjusting external thread 34 is provided at the bottom of the positioning outer cylinder 3, the outer thread of the adjusting external thread 34 is connected to the adjusting wheel 5, a plurality of groups of transmission grooves 42 are provided in an annular shape on the outer side of the adjusting inner cylinder 4, a plurality of groups of transmission sliders 52 are provided in an annular shape on the inner wall of the adjusting wheel 5, and the transmission sliders 52 are slidably connected in the transmission grooves 42.

[0040] Furthermore, two groups of pull ropes 51 are wound around the outer side of the adjusting wheel 5, and the winding directions of the two groups of pull ropes 51 are opposite. The arrangement of the pull ropes 51 will not affect the gap and can be inserted into the gap.

[0041] By pulling the pull rope 51, the pull rope 51 drives the adjusting wheel 5 to rotate, and the adjusting wheel 5 drives the adjusting inner cylinder 4 to rotate through the transmission slider 52 and the transmission slide groove 42. Since the friction between the positioning support rod 6 and the bottom of the prefabricated wall 2 is large, the adjusting inner cylinder 4 will rotate relative to the positioning outer cylinder 3, and the adjusting inner cylinder 4 drives the adjusting groove 41 to rotate relative to the limit member 7. The limit member 7 can be controlled to slide up and down along the guide hole 33 at an angle, and the control is stable and simple. At the same time, the adjusting wheel 5 is lifted and lowered relative to the positioning outer cylinder 3 under the action of the adjusting external thread 34, and the transmission slider 52 slides in the transmission slide groove 42. While the transmission is stable, the self-locking thread is used to ensure that the adjusting wheel 5 cannot rotate when the adjusting inner cylinder 4 is not driven.

[0042] Embodiment 4, based on the above embodiment, further includes that the positioning support rod 6 is a bending rod with a bending angle of 120°-150°, so that when the positioning support rod 6 is corrected, the prefabricated wall 2 can be lowered a suitable distance, and the supporting correction effect is good.

[0043] Embodiment 5, based on the above embodiment, further includes that the limiting member 7 is composed of a sliding rod portion and an arc-shaped top pressing portion, the sliding rod portion can be inserted into the adjustment groove 41, the arc-shaped top pressing portion is in contact with the telescopic rod 62, and the arc center of the arc-shaped top pressing portion coincides with the rotation center of the positioning support rod 6.

[0044] By setting the arc-shaped pressing portion, the position of the telescopic rod 62 remains unchanged when the positioning support rod 6 is corrected, and a larger contact area can be provided for the telescopic rod 62 when the gap is adjusted subsequently.

[0045] Embodiment 6, based on the above embodiment, further includes that a correction wide head is provided at the top end of the telescopic rod 62 to improve the contact surface correction effect.

[0046] In summary, the positioning assembly used in the present invention has a simple structure, can be applied to any wall assembly, has a wide range of applications, and has low manufacturing costs. Moreover, by positioning the support rod 6 in the shape of an umbrella rib in the assembly hole 21, the connection strength between the prefabricated wall 2 and the floor 1 can be increased.

[0047] Example 7: A method for constructing an assembled building based on BIM technology, comprising the following steps:

[0048] S1. Pre-preparation: Attach two sets of positioning components to the embedded steel bars 11 at the edges of both ends respectively;

[0049] S2. Hoisting: The prefabricated wall 2 is hoisted from the wall storage area or transport vehicle. During the hoisting process, the safety of the lifting point and the hook must be confirmed. When the prefabricated wall 2 is hoisted to a height of 1m from the floor, it is slowly lowered by manual support. During the lowering process, a mirror is placed near the embedded steel bar 11 to observe whether the assembly hole 21 and the embedded steel bar 11 are aligned. After alignment, it is slowly lowered into place. The prefabricated wall 2 is pressed on the positioning assembly. The positioning assembly first accurately positions the prefabricated wall 2 and positions the verticality. As the prefabricated wall continues to descend, the positioning assembly adjusts the gap between the prefabricated wall 2 and the floor 1 to a gap of 10mm to 20mm.

[0050] S3. Sealing: Press the prepared sealing material into the gap, ensuring that the material fills the entire gap tightly and evenly to avoid gaps. The inserted material should be compacted to ensure good contact with the wall and floor without leaving any gaps.

[0051] S4. Grouting: Connect the grouting pipe to the grouting hole 22, start the grouting equipment, and slowly and evenly inject the grouting material into the gap. Pay attention to observation during grouting to ensure that there is no leakage. When the slurry flows out of the overflow hole 23, seal the overflow hole 23, then remove the grouting pipe and seal the grouting hole 22. After the slurry solidifies, complete the assembly.

[0052] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prefabricated building based on BIM technology, comprising a floor (1) and prefabricated walls (2), characterized in that: The top of the floor (1) is provided with a plurality of groups of embedded steel bars (11), and the outer sides of the embedded steel bars (11) are sleeved with positioning components. The bottom of the prefabricated wall (2) is provided with a plurality of groups of assembly holes (21), and the inner diameter of the assembly hole (21) is larger than the outer diameter of the embedded steel bars (11); The positioning assembly comprises a positioning outer cylinder (3) and an adjusting inner cylinder (4), the adjusting inner cylinder (4) is sleeved on the embedded steel bar (11), the positioning outer cylinder (3) is rotatably mounted on the outer side of the adjusting inner cylinder (4), the outer ring of the positioning outer cylinder (3) is provided with a plurality of articulated frames (31), the interior of the articulated frames (31) is hinged with a positioning support rod (6), a tension spring (32) is provided between the positioning support rod (6) and the positioning outer cylinder (3), the upper half of the positioning support rod (6) is provided with a sliding cavity (61), the interior of the sliding cavity (61) is slidably connected with a telescopic rod (62), the outer ring of the positioning outer cylinder (3) is provided with a plurality of guide holes (33), the interior of the guide holes (33) is slidably connected with a limiting member (7), the limiting member (7) can slide up and down along the guide holes (33), the limiting member (7) and the telescopic rod (62) are pressed against each other, and the positioning support rod (6) is a bending rod with a bending angle of 120°-150°.

2. The prefabricated building based on BIM technology according to claim 1, characterized in that: An adjusting groove (41) is provided in an annular shape on the outer side of the adjusting inner cylinder (4). The adjusting groove (41) is arranged corresponding to the guide hole (33). The depth of the adjusting groove (41) is designed to be gradually changed. The limiting member (7) can be inserted into the adjusting groove (41).

3. The prefabricated building based on BIM technology according to claim 2, characterized in that: The bottom of the positioning outer cylinder (3) is provided with an adjusting outer thread (34), and the outer thread of the adjusting outer thread (34) is connected to an adjusting wheel (5). The outer ring of the adjusting inner cylinder (4) is provided with multiple groups of transmission slide grooves (42), and the inner wall of the adjusting wheel (5) is provided with multiple groups of transmission sliders (52) in a ring shape, and the transmission sliders (52) are slidably connected in the transmission slide grooves (42).

4. The prefabricated building based on BIM technology according to claim 3, characterized in that: Two groups of drawstrings (51) are wound around the outer side of the regulating wheel (5), and the winding directions of the two groups of drawstrings (51) are opposite.

5. The prefabricated building based on BIM technology according to claim 4, characterized in that: The limiting member (7) is composed of a sliding rod portion and an arc-shaped pressing portion. The sliding rod portion can be inserted into the adjustment groove (41). The arc-shaped pressing portion contacts the telescopic rod (62), and the arc center of the arc-shaped pressing portion coincides with the rotation center of the positioning support rod (6).

6. The prefabricated building based on BIM technology according to claim 5, characterized in that: The top end of the telescopic rod (62) is provided with a width correction head.

7. The prefabricated building based on BIM technology according to claim 6, characterized in that: A grouting hole (22) and a grouting hole (23) are provided through the outer side of the assembly hole (21), and the grouting hole (22) is located below the grouting hole (23).

8. A method for constructing an assembled building based on BIM technology, using the assembled building based on BIM technology as claimed in claim 7, characterized in that: The following steps are involved: S1. Pre-preparation: two sets of positioning components are respectively connected to the embedded steel bars (11) at the outermost edges of the two ends; S2. Hoisting: The prefabricated wall (2) is hoisted from the wall storage area or the transport vehicle. During the hoisting process, the safety of the hoisting point and the hook must be confirmed. When the prefabricated wall (2) is hoisted to a height of 1m from the floor, it is slowly lowered by manual hand support. During the lowering process, a mirror is placed near the embedded steel bar (11) to observe whether the assembly hole (21) and the embedded steel bar (11) are aligned. After alignment, it is slowly lowered into place. The prefabricated wall (2) is pressed on the positioning component. The positioning component first accurately positions the prefabricated wall (2) and positions the verticality. As the prefabricated wall continues to descend, the positioning component adjusts the gap between the prefabricated wall (2) and the floor (1) to make the gap reach 10mm to 20mm. S3. Sealing: Press the prepared sealing material into the gap, ensuring that the material fills the entire gap tightly and evenly to avoid gaps. The inserted material should be compacted to ensure good contact with the wall and floor without leaving any gaps. S4. Grouting: Connect the grouting pipe to the grouting hole (22), start the grouting equipment, and slowly and evenly inject the grouting material into the gap. Pay attention to observe during grouting to ensure that there is no leakage. When the grout flows out of the overflow hole (23), seal the overflow hole (23), then remove the grouting pipe and seal the grouting hole (22). After the grout solidifies, the assembly is completed.

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