A building component based on BIM

Abstract

The utility model discloses a kind of building components based on BIM, it includes prefabricated column body, transverse tension assembly and pouring assembly.The upper end of prefabricated column body is equipped with first step part, and first step part is equipped with multiple vertical steel bars along the length direction of prefabricated column body;The lower end of prefabricated column body is equipped with second step part, and second step part is equipped with insert hole body for cooperating with vertical steel bar;First step part can be assembled into butt joint structure with second step part;Transverse tension assembly includes pre-tightening hole body being arranged perpendicularly to vertical steel bar, horizontal steel bar and tension unit, pre-tightening hole body is opened in butt joint structure, horizontal steel bar is inserted in pre-tightening hole body, and tension unit is connected with one end of horizontal steel bar, to supply tension horizontal steel bar;Pouring assembly can pour cement slurry into insert hole body and pre-tightening hole body.The utility model can improve the shear capacity of the prefabricated column of forming.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a building component based on BIM. Background Technology

[0002] BIM is mainly applied to prefabricated buildings, whose components mainly include exterior wall panels, interior wall panels, composite slabs, balconies, air conditioning panels, stairs, precast beams, and precast columns. Prefabricated construction refers to transferring a large amount of on-site work from traditional construction methods to factories for prefabrication.

[0003] For precast columns, after the precast columns are erected on the construction site, cement grout is poured into the grouting holes at the bottom of the precast columns until cement grout emerges from the grout outlet. After the cement grout solidifies, the precast columns can be fixed and connected.

[0004] However, the existing connection structure between precast columns is too simple, with sufficient compressive strength but insufficient shear strength, making it difficult to cope with some extreme geological or meteorological activities. Utility Model Content

[0005] In view of this, it is necessary to provide a BIM-based building component to solve the problem of weak shear resistance of existing prefabricated building components.

[0006] This utility model provides a BIM-based building component, including a precast column body, a horizontal tensioning assembly, and a casting assembly. The upper end of the precast column body has a first stepped section, with multiple vertical reinforcing bars along its length. The lower end of the precast column body has a second stepped section, with insertion holes for engaging with the vertical reinforcing bars. The first stepped section and the second stepped section can be assembled into a butt joint structure. The horizontal tensioning assembly includes pre-tensioning holes perpendicular to the vertical reinforcing bars, horizontal reinforcing bars, and a tensioning unit. The pre-tensioning holes are formed in the butt joint structure, the horizontal reinforcing bars are inserted into the pre-tensioning holes, and the tensioning unit is connected to one end of the horizontal reinforcing bars for tensioning them. The casting assembly can pour cement slurry into the insertion holes and the pre-tensioning holes.

[0007] Furthermore, the pre-tightening hole includes a first hole in the first stepped portion and a second hole in the second stepped portion, the first hole being connected to the vertical steel bar and the second hole being connected to the insertion hole.

[0008] Furthermore, the inner diameter of the insertion hole is larger than the diameter of the vertical reinforcing bar, and an annular gap for pouring cement slurry is formed between the vertical reinforcing bar and the insertion hole.

[0009] Furthermore, the tensioning unit includes a base for abutting against the precast column body and a movable tensioning member, the tensioning member being movably connected to the base and connected to the end of the horizontal reinforcing bar for tensioning the horizontal reinforcing bar.

[0010] Furthermore, the tensioning member is threadedly connected to the base, and the tensioning member is provided with a connecting part that mates with the end of the horizontal reinforcing bar.

[0011] Furthermore, the horizontal reinforcing bars have bent portions at both ends that connect to the outside.

[0012] Furthermore, the casting assembly includes multiple casting units, each casting unit being configured in a one-to-one correspondence with the insertion hole, and each casting unit being capable of casting cement slurry into the insertion hole.

[0013] Furthermore, the casting unit includes a grouting hole and a grout outlet hole opened on the precast column body. The grouting hole and the grout outlet hole are respectively connected to the insertion hole body, and cement grout can be injected from the grouting hole and overflow from the grout outlet hole.

[0014] Furthermore, the grouting hole is located at the bottom of the insertion hole body.

[0015] Furthermore, the slurry outlet is located at the top of the slurry outlet.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) A BIM-based building component of this utility model includes a precast column body. The upper end of the precast column body has a first step, and the first step has multiple vertical steel bars along the length of the precast column body. The lower end of the precast column body has a second step, and the second step has insertion holes. Two adjacent precast column bodies are connected end to end, and the first step and the second step are connected in the horizontal plane to form a connecting structure, which can prevent the relative horizontal sliding of the two precast column bodies. The vertical steel bars correspond one-to-one with the insertion holes and are mutually compatible. The vertical steel bars can be inserted into the insertion holes to form a steel reinforcement skeleton structure between the two precast column bodies. The steel reinforcement skeleton structure, as the main load-bearing structure of the column, can provide sufficient compressive strength.

[0017] (2) A BIM-based building component of this utility model is provided with a transverse tensioning assembly. The transverse tensioning assembly includes a pre-tightening hole, a horizontal steel bar, and a tensioning unit, which are set perpendicular to the vertical steel bar. The pre-tightening hole is opened in the butt joint structure. The horizontal steel bar is inserted into the pre-tightening hole, which can connect the first and second steps of two adjacent precast column bodies together. The tensioning unit is connected to one end of the horizontal steel bar. The tensioning unit can tighten the horizontal steel bar and provide pre-tightening force to the horizontal steel bar, thereby forming an additional transverse constraint force in the butt joint structure. The transverse constraint force not only effectively shares part of the load of the vertical steel bar, but also improves the shear resistance at the node. Attached Figure Description

[0018] Figure 1 An assembly drawing of the overall BIM-based building components provided in this utility model example; Figure 2 An exploded view of the overall structure of a BIM-based building component provided in this utility model example; Figure 3 for Figure 1-2 A structural schematic diagram of the precast column body from one perspective; Figure 4 for Figure 1-2 Another structural schematic diagram of the precast column body from a different perspective; Figure 5 for Figure 1-2 A schematic diagram of the tensioning unit.

[0019] In the diagram, 100 is the precast column body; 110 is the first step; 120 is the vertical reinforcing bar; 130 is the second step; and 140 is the insertion hole. 200. Lateral tensioning assembly; 210. Pre-tensioning hole; 211. First hole; 212. Second hole; 220. Horizontal reinforcing bar; 221. Bending part; 230. Tensioning unit; 231. Base; 232. Tensioning component; 232a. Connecting part; 300. Casting component; 310. Casting unit; 311. Grouting hole; 312. Grout outlet hole. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0021] This embodiment of a BIM-based building component relates to the technical field of prefabricated buildings. By using horizontally set pre-tightened steel bars, two prefabricated column bodies 100 can be horizontally connected and fixed, improving the shear resistance of the formed prefabricated columns and enhancing the overall ability of prefabricated houses to resist extreme geological and meteorological activities.

[0022] Please see Figures 1 to 5 This embodiment of a BIM-based building component includes: a precast column body 100, a horizontal tensioning assembly 200, and a casting assembly 300. The precast column body 100 has a connection structure for mutual assembly and docking, which can complete the overall assembly of the precast column. The horizontal tensioning assembly 200 can horizontally connect and fix two precast column bodies 100, improving the overall shear resistance of the precast column. The casting assembly 300 can complete the connection between adjacent precast column bodies 100.

[0023] The upper end of the precast column body 100 is provided with a first stepped section 110, and multiple vertical steel bars 120 are provided in the first stepped section 110 along the length of the precast column body 100. The lower end of the precast column body 100 is provided with a second stepped section 130, and insertion holes 140 are provided on the second stepped section 130. Two adjacent precast column bodies 100 are connected end to end, and the first stepped section 110 and the second stepped section 130 are joined in the horizontal plane to form a joint structure, which can prevent the two precast column bodies 100 from sliding horizontally relative to each other. The vertical steel bars 120 correspond one-to-one with the insertion holes 140 and are mutually compatible. The vertical steel bars 120 can be inserted into the insertion holes 140 to form a steel reinforcement skeleton structure between the two precast column bodies 100. The steel reinforcement skeleton structure, as the main load-bearing structure of the column, can provide sufficient compressive strength.

[0024] The transverse tensioning assembly 200 includes a pre-tensioning hole 210 perpendicular to the vertical reinforcing bar 120, a horizontal reinforcing bar 220, and a tensioning unit 230. The pre-tensioning hole 210 is formed in the butt joint structure, and the horizontal reinforcing bar 220 is inserted into the pre-tensioning hole 210, which can connect the first step 110 and the second step 130 of two adjacent precast column bodies 100 together. The tensioning unit 230 is connected to one end of the horizontal reinforcing bar 220, and the tensioning unit 230 can tighten the horizontal reinforcing bar 220 and provide pre-tensioning force to the horizontal reinforcing bar 220, thereby forming an additional transverse constraint force in the butt joint structure. The transverse constraint force not only effectively shares part of the load of the vertical reinforcing bar 120, but also improves the shear resistance at the joint.

[0025] The casting assembly 300 can pour cement slurry into the insertion hole 140 and the pre-tightening hole 210, so that the horizontal steel bar 220 and the vertical steel bar 120 are integrated with the precast column body 100, thus completing the assembly and connection of multiple precast column bodies 100.

[0026] In some embodiments, please refer to Figures 2 to 4The pre-tightening hole 210 includes a first hole 211 and a second hole 212. The first hole 211 is formed in the first stepped portion 110 and connects to the vertical reinforcing bar 120, with a portion of the vertical reinforcing bar 120 exposed in the first hole 211. The vertical reinforcing bar 120 serves as the main structure bearing vertical loads. The horizontal reinforcing bar 220 is connected to the vertical reinforcing bar 120 through the first hole 211, forming an embedded connection structure. This embedded connection structure not only enhances the vertical bearing capacity of the precast column but also provides more effective support for the horizontal reinforcing bar 220 when bearing shear forces.

[0027] The second hole 212 is formed in the second step 130 and is connected to the insertion hole 140. The grouting material can smoothly fill the entire hole system, ensuring that both the vertical reinforcing bars 120 and the horizontal reinforcing bars 220 are fully encased, thereby enhancing the overall structural integrity. The filling of cement grout can further increase the stiffness and durability of the joint and reduce local weaknesses caused by assembly gaps.

[0028] In some embodiments, the inner diameter of the insertion hole 140 is larger than the diameter of the vertical reinforcing bar 120, forming an annular gap between the vertical reinforcing bar 120 and the insertion hole 140. This annular gap provides space for the filling of cement grout, allowing the cement grout to completely encapsulate the vertical reinforcing bar 120 and fill all the gaps between the vertical reinforcing bar 120 and the insertion hole 140, thereby ensuring sufficient bonding surface between the reinforcing bar and the cement grout. Through sufficient bonding, the reinforcing bar and the precast column form a robust integrated structure, which not only increases the overall stiffness of the joint but also enhances the anchorage effect between the reinforcing bar and the surrounding concrete, thereby improving the shear and compressive strength of the connection.

[0029] The presence of annular gaps allows for more even force distribution between the reinforcing steel and concrete, thus preventing stress concentration at a single point. This significantly improves the shear and compressive strength of the joint area.

[0030] In some embodiments, please refer to Figure 5 The tensioning unit 230 includes a base 231 for abutting against the precast column body 100 and a movable tensioning member 232. The tensioning member 232 is movably connected to the base 231 and is connected to the end of the horizontal steel bar 220. By adjusting the tensioning member 232, the tensioning member 232 can be driven to move relative to the horizontal steel bar 220, thereby tightening the horizontal steel bar 220 and giving it preload. This avoids local stress concentration, improves the shear strength of the assembly node, and enhances the overall stability and seismic resistance of the structure.

[0031] In practical implementation, the tensioning member 232 is a threaded rod, and it is connected to the base 231 by a thread. Rotating the tensioning member 232 allows for its overall driving and feeding. One end of the tensioning member 232 relative to the precast column body 100 has a connecting part 232a, which can engage with the end of the horizontal reinforcing bar 220 to fix it, thus facilitating the tensioning member 232 to apply force to the horizontal reinforcing bar 220. The connecting part 232a can be a connecting ring or a connecting rod, and it is rotatably connected to the tensioning member 232. The tensioning member 232 can rotate relative to the connecting part 232a and drive the connecting part 232a to move forward.

[0032] It should be further explained that the horizontal steel bar 220 has bent portions 221 at both ends that are connected to the outside. One bent portion 221 of the horizontal steel bar 220 abuts against the outer wall of the precast column body 100, and the other bent portion 221 of the horizontal steel bar 220 is engaged in the connecting portion 232a. The horizontal steel bar 220 can be tightened as a whole by the tensioning member 232, so that the horizontal steel bar 220 can obtain prestress.

[0033] After the pouring is completed, the protruding outward bending part 221 needs to be manually removed to ensure the aesthetics of the precast column body 100.

[0034] In some embodiments, the tensioning member 232 can be a C-clamp or a bracket jack, etc., and can be replaced with equivalent devices as needed.

[0035] In some embodiments, please refer to Figures 1 to 4 The casting component 300 includes multiple casting units 310, each casting unit 310 and each insertion hole 140 are set in a one-to-one correspondence. This ensures that each insertion hole 140 can be cast with cement slurry independently and accurately, and that the vertical steel bars 120 inside all insertion holes 140 can be fully wrapped and the cement slurry is filled evenly, thus avoiding localized insufficient strength at certain nodes due to uneven casting or missed casting.

[0036] Multiple casting units 310 independently control the casting process of each insertion hole 140, ensuring that each hole is fully filled with cement grout and preventing voids caused by air or other impurities during the grouting process. This effectively improves the uniformity and stability of the overall assembled structure.

[0037] As a further embodiment, the casting unit 310 includes a grouting hole 311 and a grout outlet hole 312 formed on the precast column body 100. The grouting hole 311 and the grout outlet hole 312 are respectively connected to the insertion hole body 140. The setting of the grout outlet hole 312 allows the construction personnel to visually judge whether the cement grout has completely filled the insertion hole body 140 when the cement grout overflows from the grout outlet hole 312 during the grouting process. When the cement grout flows out evenly from the grout outlet hole 312, it indicates that the insertion hole body 140 has been filled with cement grout, avoiding the existence of gaps or unfilled areas caused by insufficient grouting.

[0038] The grout outlet 312 also serves to vent air, preventing gas from accumulating inside the insertion hole 140 during the grouting process and forming air bubbles or voids. As cement grout is injected through the grouting hole 311, gas is discharged through the grout outlet 312, ensuring a smoother grouting process and improving the density and strength of the joint.

[0039] In the specific implementation process, the grouting hole 311 is located at the bottom of the insertion hole 140, and the grout outlet hole 312 is located at the top of the grout outlet hole 312. Cement grout is injected through the grouting hole 311 at the bottom, and the cement grout naturally fills upward under the action of gravity until it overflows from the grout outlet hole 312 at the top. The bottom-up grouting method effectively avoids air being trapped in the insertion hole 140, allowing the cement grout to completely fill every corner of the insertion hole 140, ensuring full contact between the reinforcing steel and the cement grout.

[0040] The grouting process proceeds from bottom to top. Gas is gradually expelled as the cement grout rises, eventually exiting through the grout outlet 312 at the top, preventing the formation of air bubbles or voids. The cement grout gradually fills the entire insertion hole 140, completely encasing the vertical reinforcing bar 120 and forming a tight bond structure. This effectively improves the bond strength between the vertical reinforcing bar 120 and the precast column body 100, ensuring the overall strength of the joint under shear, tensile, and compressive stresses, thereby enhancing the stability of the structure.

[0041] Workflow: First, using hoisting equipment, the second step 130 of one precast column body 100 is connected to the first step 110 of another precast column body 100, and the vertical reinforcing bar 120 is inserted into the insertion hole 140. Next, the horizontal reinforcing bar 220 is inserted into the pre-tightening hole 210 and tightened using the tensioning unit 230. Finally, cement grout is injected into the grouting hole 311 using grouting equipment to complete the fixing of the two precast column bodies 100.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A BIM-based building component, characterized in that, include: The precast column body has a first stepped section at its upper end, and a plurality of vertical steel bars are provided in the first stepped section along the length of the precast column body; the precast column body has a second stepped section at its lower end, and the second stepped section has insertion holes for engaging with the vertical steel bars; the first stepped section can be assembled with the second stepped section to form a butt joint structure. A transverse tensioning assembly includes a pre-tightening hole perpendicular to the vertical reinforcing bar, a horizontal reinforcing bar, and a tensioning unit. The pre-tightening hole is formed in the butt joint structure, the horizontal reinforcing bar is inserted into the pre-tightening hole, and the tensioning unit is connected to one end of the horizontal reinforcing bar to tension the horizontal reinforcing bar. A casting assembly capable of casting cement slurry into the insertion hole and the pre-tightening hole.

2. A BIM-based building component according to claim 1, characterized in that, The pre-tightening hole includes a first hole in the first stepped portion and a second hole in the second stepped portion. The first hole is connected to the vertical steel bar, and the second hole is connected to the insertion hole.

3. A BIM-based building component according to claim 1, characterized in that, The inner diameter of the insertion hole is larger than the diameter of the vertical reinforcing bar, and an annular gap is formed between the vertical reinforcing bar and the insertion hole for pouring cement slurry.

4. A BIM-based building component according to claim 1, characterized in that, The tensioning unit includes a base for abutting against the precast column body and a movable tensioning member. The tensioning member is movably connected to the base and connected to the end of the horizontal reinforcing bar for tensioning the horizontal reinforcing bar.

5. A BIM-based building component according to claim 4, characterized in that, The tensioning member is threadedly connected to the base, and the tensioning member is provided with a connecting part that mates with the end of the horizontal reinforcing bar.

6. A BIM-based building component according to claim 5, characterized in that, The horizontal reinforcing bars have bent sections at both ends that connect to the outside.

7. A BIM-based building component according to claim 1, characterized in that, The casting assembly includes multiple casting units, each of which is configured in a one-to-one correspondence with the insertion hole. Each casting unit is capable of casting cement slurry into the insertion hole.

8. A BIM-based building component according to claim 7, characterized in that, The casting unit includes a grouting hole and a grout outlet hole opened on the precast column body. The grouting hole and the grout outlet hole are respectively connected to the insertion hole body, and cement grout can be injected from the grouting hole and overflow from the grout outlet hole.

9. A BIM-based building component according to claim 8, characterized in that, The grouting hole is located at the bottom of the insertion hole.

10. A BIM-based building component according to claim 9, characterized in that, The slurry outlet is located at the top of the slurry outlet.

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