Construction technology of laminated slab of fabricated steel structure residence

Abstract

The application relates to a kind of assembled steel structure house's laminated slab construction technology, belong to the field of laminated slab construction technology.It includes the following steps: S1: install steel column, pour self-compacting concrete in the steel column, install horizontal H-shaped steel beam on the steel column;S2: hoist laminated slab and place installation on horizontal H-shaped steel beam;S3: according to the design size of gap between steel column and laminated slab, process the steel formwork that is suitable;S4: install formwork moving mechanism to steel column, install steel formwork to formwork moving mechanism, so that steel formwork is opposite to gap;S5: drive steel formwork to move upwards along steel column by formwork moving mechanism, to steel formwork and laminated slab adhere.This application has the effect of improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of composite slab construction technology, and in particular to a composite slab construction process for prefabricated steel structure residential buildings. Background Technology

[0002] Current steel-structure prefabricated residential buildings use a steel frame-central bracing system. The vertical support consists of rectangular steel-concrete composite columns (filled with C40-C50 self-compacting concrete), reinforced with diagonal bracing using square steel pipes. The horizontal structure employs H-beams and composite slabs. The H-beams are horizontally connected to the steel columns, and the composite slabs overlap the H-beams by 20mm. Rectangular notches are cut into the composite slabs opposite the steel columns. Because connecting steel bars are pre-installed around the perimeter of the composite slabs, a 20mm-30mm gap exists between the composite slabs and the steel columns when installed onto the H-beams, requiring formwork and concrete pouring. Currently, simple formwork is commonly used for sealing and support, such as spot-welded thin iron sheets for reinforcement.

[0003] Regarding the aforementioned technologies, when constructing formwork for the gap between the composite slab and the steel column, workers need to set up a workbench and spot weld thin iron sheets to support the gap after the composite slab is installed in place, resulting in low construction efficiency. Summary of the Invention

[0004] To improve construction efficiency, this application provides a composite slab construction process for prefabricated steel structure residential buildings.

[0005] The composite slab construction process for prefabricated steel structure residential buildings provided in this application adopts the following technical solution:

[0006] A composite slab construction process for prefabricated steel structure residential buildings includes the following steps:

[0007] S1: Install steel columns, pour self-compacting concrete inside the steel columns, and install horizontal H-beams on the steel columns;

[0008] S2: Hoist the composite slab and place it on the horizontal H-beam;

[0009] S3: Fabricate steel formwork to match the design dimensions of the gap between the steel column and the composite slab;

[0010] S4: Install the formwork moving mechanism onto the steel column, and install the steel formwork onto the formwork moving mechanism so that the steel formwork is directly opposite the gap;

[0011] S5: Drive the steel formwork upward along the steel column through the formwork moving mechanism until the steel formwork is in contact with the composite plate.

[0012] By adopting the above technical solutions, during the construction of prefabricated steel structure houses, a formwork moving mechanism is installed on the steel columns to drive the steel formwork to move upward. The steel formwork then covers the gap between the composite slab and the steel column, eliminating the need for workers to set up workbenches. The gap between the composite slab and the steel column is reinforced by spot welding of thin iron sheets, shortening the construction cycle and improving construction efficiency.

[0013] Optionally, the template moving mechanism includes a base detachably sleeved on the steel column, and a moving component disposed on the base for driving the base to move along the steel column, wherein the steel template is connected to the base.

[0014] By adopting the above technical solution, the base can be detachably sleeved on the steel column. During construction, the base is installed on the steel column, and the base is driven to move upward along the steel column by the moving component until the steel formwork rises to fit with the composite plate, thereby achieving the effect of supporting the gap between the composite plate and the steel column.

[0015] Optionally, the base includes four base plates that are hinged together in sequence, with connectors provided on the first and last two base plates, and the base plates are connected and sleeved on the outside of the steel column through the connectors.

[0016] By adopting the above technical solution, four substrates are connected end to end to form a base. At the same time, the first and last substrates are connected and fixed by connectors, which makes it easy to disassemble and install the base on the outside of the steel column.

[0017] Optionally, the connector includes a snap fastener, with both ends of the snap fastener located on the first and last base plates, respectively.

[0018] By adopting the above technical solution, the two ends of the buckle are respectively installed on the first and last base plates. When the four base plates are fitted outside the steel column, the first and last base plates are fixedly connected by the buckle, so as to facilitate the fixing of the base outside the steel column.

[0019] Optionally, the moving component includes a drive motor and rollers. Each of the base plates is rotatably provided with rollers, and the drive motor is mounted on one of the rollers. The output shaft of the drive motor is coaxially and fixedly connected to the roller.

[0020] By adopting the above technical solution, rollers are rotatably mounted on the substrate. The substrate is mounted to start the drive motor, and the drive motor drives the rollers to rotate, thereby facilitating the movement of the drive base along the outer wall of the steel column.

[0021] Optionally, a self-locking component is also provided on the side of the base plate facing the steel column, which is used to limit and fix the base when it moves downward.

[0022] By adopting the above technical solution, after the base rises to the point where the steel formwork and the composite slab abut, concrete is poured into the gap between the composite slab and the steel formwork. At this time, the steel formwork is subjected to the gravity of the concrete and tends to move the base downward. At this time, the self-locking component limits and fixes the base, supporting and fixing the base in the current position.

[0023] Optionally, the self-locking component includes a friction roller, a spring, and an unlocking component. The inner sidewall of the substrate is provided with trapezoidal snap-fit ​​grooves, the lower part of which is a trapezoidal base. Sliding grooves are provided on both sidewalls of the snap-fit ​​grooves. The two ends of the friction roller are slidably disposed within the two sliding grooves, with one side of the friction roller always in contact with the bottom wall of the snap-fit ​​groove. The spring is located within the snap-fit ​​groove, with one end connected to the bottom wall of the snap-fit ​​groove and the other end extending upwards along the groove and in contact with the friction roller. The unlocking component is disposed on the substrate and is used to drive the friction roller to move downwards along the snap-fit ​​groove.

[0024] By adopting the above technical solution, the friction roller is slidably installed in the locking groove, with the lower end of the locking groove being deeper and the upper end shallower. When the base moves upward along the steel column, under the action of friction, the friction roller tends to move downward along the locking groove. At this time, the gap between the multiple friction rollers tends to increase, allowing the base to move freely upward along the steel column. During the movement of the base, the friction roller, under the action of the spring, always maintains contact with the bottom wall of the locking groove on one side and with the steel column on the other side. When the base tends to move downward, the friction roller, under the action of the spring force and friction, tends to move upward along the locking groove, and the gap between the multiple friction rollers tends to decrease. Thus, the multiple friction rollers clamp and fix the base to the steel column. At the same time, the greater the pressure on the upper steel template, the tighter the multiple friction rollers clamp, achieving self-locking fixation when the base tends to move downward.

[0025] Optionally, the unlocking component includes an electromagnet, which is disposed on the lower side wall of the locking groove.

[0026] By adopting the above technical solution, the unlocking component is an electromagnet. When the electromagnet is activated, it generates a downward attraction on the friction roller, which in turn drives the friction roller to move downward until it is separated from the steel column. At this time, the base can move downward freely.

[0027] Optionally, the friction roller is provided with spherical sliders at both ends, and the groove is adapted to the sliders.

[0028] By adopting the above technical solution, the sliders at both ends of the friction roller are spherical, so that the two ends of the friction roller will not detach from the groove when the friction roller moves in the groove, thus preventing the friction roller from falling off the locking groove.

[0029] Optionally, a slot is provided on the substrate, and a plug rod is connected to the steel template and is directly opposite the slot.

[0030] By adopting the above technical solution, the steel formwork is inserted into the slot through the insertion rod, which facilitates the installation and disassembly of the steel formwork. At the same time, steel formwork of different sizes can be customized and installed on the base according to the size of the gap between the composite plate and the steel column, thereby expanding the scope of application.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. During the construction of prefabricated steel structure housing, a formwork moving mechanism is installed on the steel columns to drive the steel formwork to move upward. The steel formwork then covers the gap between the composite slab and the steel column. There is no need for workers to set up a workbench. The gap between the composite slab and the steel column is reinforced by spot welding of thin iron sheets, which shortens the construction cycle and improves construction efficiency.

[0033] 2. Four base plates are connected end to end to form a base. At the same time, the end base plates are connected and fixed by connectors, so as to facilitate the disassembly and installation of the base on the outside of the steel column.

[0034] 3. The friction rollers are slidably installed in the locking groove, with the lower end of the groove being deeper and the upper end shallower. When the base moves upward along the steel column, the friction rollers tend to move downward along the locking groove under the action of friction. At this time, the gap between the multiple friction rollers tends to increase, allowing the base to move freely upward along the steel column. During the movement of the base, the friction rollers, under the action of the spring, always maintain contact with the bottom wall of the locking groove on one side and with the steel column on the other side. When the base tends to move downward, the friction rollers, under the action of the spring force and friction, tend to move upward along the locking groove, and the gap between the multiple friction rollers tends to decrease. Thus, the multiple friction rollers clamp and fix the base to the steel column. At the same time, the greater the pressure on the upper steel template, the tighter the multiple friction rollers clamp, achieving self-locking fixation when the base tends to move downward. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0036] Figure 2 This is a schematic diagram used to illustrate the structure of the mobile component in the embodiments of this application.

[0037] Figure 3 This is a schematic diagram illustrating the structure of the self-locking component in the embodiments of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Steel template; 11. Insert rod; 2. Base; 21. Base plate; 211. Snap-fit ​​groove; 212. Slide groove; 213. Slot; 22. Buckle; 3. Moving component; 31. Drive motor; 32. Roller; 4. Self-locking component; 41. Friction roller; 411. Slider; 42. Spring; 43. Electromagnet. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0041] This application discloses a composite slab construction process for prefabricated steel structure residential buildings, referring to... Figure 1 A composite slab construction process for prefabricated steel structure residential buildings includes the following steps:

[0042] S1: Drive steel columns into the construction site according to the design requirements and pour C40~C50 self-compacting concrete into the steel columns;

[0043] S2: Install H-beams horizontally on the steel columns to form a frame for placing the composite slabs. Use hoisting machinery to hoist the composite slabs and install them onto the horizontal H-beams.

[0044] S3: There is an L-shaped gap between the steel beam and the composite slab. Based on the gap size between the steel column and the composite slab, a matching steel formwork 1 is fabricated.

[0045] S4: Install the template moving mechanism onto the steel column, and install the processed steel template 1 onto the template moving mechanism. The steel template 1 is vertically aligned with the gap between the column and the composite slab.

[0046] S5: Drive the steel formwork 1 to move upward along the steel column through the formwork moving mechanism until the steel formwork 1 is in contact with the composite plate. At this time, one end of the steel formwork 1 is in contact with the steel column and the other end is in contact with the lower end of the composite plate, thus completing the formwork support for the gap between the column and the composite plate.

[0047] S6: Pour concrete into the gap between the column and the composite slab;

[0048] S7: After the concrete between the column and the composite slab has solidified, the formwork is moved downward by the formwork moving mechanism, and the workers remove the steel formwork 1 and the formwork moving mechanism from the steel column and store them.

[0049] S8: When constructing the upper floor slab, repeat steps S2-S7 above.

[0050] A formwork moving mechanism mounted on the steel column moves the steel formwork 1 upwards along the column, providing formwork support for the gap between the column and the composite slab. This eliminates the need for traditional methods: workers erect scaffolds and reinforce the gap between the column and the composite slab by spot welding thin iron sheets. This shortens the formwork support time, reduces the construction cycle, and improves construction efficiency. Workers only need to install the formwork moving mechanism onto the column, reducing their workload. Furthermore, the steel formwork 1 and the formwork moving mechanism are detachable and can be reused as construction progresses floor by floor, saving resources.

[0051] Reference Figure 1 and Figure 2 The template moving mechanism includes a base 2 detachably fitted onto the outer wall of the steel column, and a moving component 3 mounted on the base 2. The moving component 3 drives the base 2 to move along the length of the steel column. The steel template 1 is connected and installed above the base 2. The base 2 includes four base plates 21, each a rectangular plate. The four base plates 21 are sequentially hinged together, and their lengths correspond to the widths of the four sides of the steel column. Connectors are installed on the first and last base plates 21. When the base 2 is installed on the steel column, the four base plates 21 are in contact with the four sides of the steel column, and the first and last base plates 21 are connected and fixed by the connectors, thus fitting the base 2 onto the outer wall of the steel column. The connectors are clips 22, with both ends of the clips 22 mounted on the first and last base plates 21. When the base 2 is installed on the steel column, the two ends of the clips 22 are fastened together, thereby fixing the base 2 to the steel column.

[0052] When installing the base 2, four base plates 21 are fitted onto the outer wall of the steel column and connected by connectors on the first and last base plates 21. Then, the base 2 is driven to move along the outer wall of the steel column by the moving component 3 on the base 2 until the base 2 rises to the point where the steel template 1 and the composite plate abut, or the steel template 1 descends to the worker's working surface.

[0053] Reference Figure 1 and Figure 2 The moving component 3 includes a drive motor 31 and rollers 32. Two rollers 32 are rotatably mounted on the bottom of each base plate 21. When the base 2 is mounted on the steel column, multiple rollers 32 abut against the surface of the steel column. Two drive motors 31 are installed, mounted on two opposite base plates 21, and the output shafts of the drive motors 31 are coaxially and fixedly connected to the opposite rollers 32. When the drive motors 31 are started, they drive the rollers 32 to rotate, thereby driving the base 2 to move along the length of the steel column. The remaining rollers 32 move along with the base 2, serving as guides and assisting in the movement.

[0054] Refer to 1 and Figure 3Each of the multiple base plates 21 has a self-locking component 4 installed on its side facing the steel column. The self-locking component 4 does not obstruct the upward movement of the base 2 along the steel column. When the base 2 tends to move downward along the steel column, the self-locking component 4 limits and fixes the base 2. Thus, when the steel formwork 1 tends to move downward under the gravity of the concrete, the self-locking component 4 limits and fixes the base 2 to the steel column, thereby supporting the steel formwork 1 and reinforcing the gap between the steel column and the composite slab.

[0055] The self-locking component 4 includes a friction roller 41, a spring 42, and an unlocking component. Each of the four base plates 21 has a locking groove 211 on its inner sidewall. The locking groove 211 has a trapezoidal cross-sectional shape, with the lower part of the groove forming the trapezoidal base. This means the distance between the bottom wall of the locking groove 211 and the steel column is smaller at the top and larger at the bottom. Sliding grooves 212 are formed on both sides of the locking groove 211. The length of the sliding grooves 212 is parallel to the bottom wall of the locking groove 211, and the cross-sectional shape of the locking groove 211 is circular. Slider blocks 411 are fixedly installed at both ends of the friction roller 41. The ends of the sliders 411 are spherical, and the sliders 411 at both ends of the friction roller 41 are slidably disposed within the sliding grooves 212 on both sides. The spherical sliders 411 ensure that the friction roller 41 does not detach from the sliding grooves 212 during its movement along the length of the sliding grooves 212, and the friction roller 41 remains horizontal at all times. During the movement of the friction roller 41 along the groove 212, one side of the friction roller 41 is always in contact with the bottom wall of the locking groove 211. The spring 42 is mounted on the base plate 21 and located inside the locking groove 211. The lower end of the spring 42 is fixedly connected to the bottom wall of the locking groove 211, and the upper end of the spring 42 extends upward along the locking groove 211 and abuts against the friction roller 41. The spring 42 is always in a compressed state, that is, the spring 42 always has the tendency to push the friction roller 41 upward along the bottom wall of the locking groove 211. The unlocking member is mounted on the base 2 and is used to drive the friction roller 41 downward along the bottom wall of the locking groove 211.

[0056] The friction roller 41 is slidably installed in the locking groove 211, and the distance between the bottom wall of the locking groove 211 and the steel column is smaller at the upper end and larger at the lower end. When the base 2 moves upward along the steel column, the friction roller 41 tends to move downward along the locking groove 211 under the action of friction. Since the friction roller 41 can only move along the direction of the sliding groove 212, the gap between the multiple friction rollers 41 tends to increase, and the base 2 can move freely upward along the steel column. During the upward movement of the base 2, the friction roller 41 always maintains contact with the bottom wall of the locking groove 211 on one side and with the steel column on the other side under the action of the spring force of the spring 42. When the steel formwork 1 moves to contact the composite slab, the drive motor 31 shuts off. At this time, the base 2 tends to move downward under the action of gravity, while the friction rollers 41 tend to move upward along the locking groove 211 under the action of the spring force of the spring 42 and the friction force between them and the steel column. The gap between the multiple friction rollers 41 tends to decrease, thus the multiple friction rollers 41 clamp and fix the base 2 to the steel column. When concrete is poured on top of the steel formwork 1, the steel plate formwork is subjected to downward pressure. The greater the downward pressure on the base 2, the tighter the multiple friction rollers 41 clamp, achieving self-locking fixation when the base 2 tends to move downward, thereby providing stable support when concrete is poured on the steel formwork 1.

[0057] Reference Figure 3 The unlocking mechanism includes an electromagnet 43, which is installed on each base plate 21. The electromagnet 43 is embedded in the lower side wall of the locking groove 211. The friction roller 41 is made of magnetic metal, while the base 2 is made entirely of non-magnetic metal. When the base 2 needs to be lowered, the drive motor 31 is activated, which drives the base 2 to move upward. The electromagnet 43 is activated, generating a downward attraction on the friction roller 41, causing the friction roller 41 to tend to move downward. This increases the distance between the multiple friction rollers 41, causing the friction roller 41 to disengage from the steel column. Then, by adjusting the direction of the drive motor 31, the base 2 is driven to move slowly downward along the steel column.

[0058] Reference Figure 1Each base plate 21 has a slot 213 on its top surface. The slot 213 has a circular cross-section and extends vertically downwards. Since the H-shaped steel beams are installed on both sides of the steel columns, rectangular notches are correspondingly opened on the composite plate, resulting in an L-shaped gap between the composite plate and the steel beams. The steel formwork 1 is also L-shaped. A rod 11 is connected to the bottom of the steel formwork 1, and the rod 11 is directly opposite the slots 213 on the two adjacent base plates 21. A reinforcing rod is also installed obliquely on the rod 11, extending obliquely upwards and fixedly connected to the bottom wall of the steel formwork 1. The rod 11 is inserted into the slot 213 to install the steel formwork 1. Furthermore, depending on the size of the gap between the composite plate and the steel beams during actual construction, the steel formwork 1 can be fabricated on-site using materials such as steel plates and reinforcing bars available at the construction site, making it widely applicable and cost-effective.

[0059] The implementation principle of the composite slab construction process for a prefabricated steel structure residential building according to an embodiment of this application is as follows: When supporting the gap between the steel column and the composite slab, four base plates 21 are installed around the steel column and fixed by buckles 22. The steel template 1 is installed on the base 2 through the insertion rod 11. The drive motor 31 is started, and the drive motor 31 drives the roller 32 to rotate, causing the base 2 to move upward along the steel column until the steel template 1 and the composite slab come into contact. When the steel template 1 is subjected to downward pressure, the gap between the multiple friction rollers 41 tends to decrease, thereby the multiple friction rollers 41 clamp and fix the base 2 to the steel column. When concrete is poured above the steel template 1, the steel template is subjected to downward pressure. The greater the downward pressure on the base 2, the tighter the multiple friction rollers 41 clamp, achieving self-locking fixation when the base 2 has a downward movement tendency, thereby providing stable support when concrete is poured on the steel template 1.

[0060] Finally, it should be noted that in the description of this application, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A composite slab construction process for prefabricated steel structure residential buildings, characterized in that, Includes the following steps: S1: Install steel columns, pour self-compacting concrete inside the steel columns, and install horizontal H-beams on the steel columns; S2: Hoist the composite slab and place it on the horizontal H-beam; S3: Based on the design dimensions of the gap between the steel column and the composite slab, process a matching steel formwork (1); S4: Install the template moving mechanism onto the steel column, and install the steel template (1) onto the template moving mechanism so that the steel template (1) is directly opposite the gap; S5: Drive the steel formwork (1) to move upward along the steel column through the formwork moving mechanism until the steel formwork (1) is in contact with the composite plate; The template moving mechanism includes a base (2) detachably sleeved on a steel column, and a moving component (3) disposed on the base (2) and used to drive the base (2) to move along the steel column. The steel template (1) is connected to the base (2). The base (2) includes four base plates (21) that are hinged together in sequence. Connecting members are provided on the first and last two base plates (21). The base plates (21) are sleeved on the outside of the steel column through the connecting members. A self-locking member (4) is also provided on the side of the base plate (21) facing the steel column. The self-locking member (4) is used to limit and fix the base (2) when it moves downward. The self-locking component (4) includes a friction roller (41), a spring (42), and an unlocking component. The inner sidewall of the base plate (21) is provided with a trapezoidal cross-section groove (211). The lower part of the groove (211) is a trapezoidal base. The two sidewalls of the groove (211) are provided with sliding grooves (212). The two ends of the friction roller (41) are respectively slidably disposed in the two sliding grooves (212). The spring (42) is located in the groove (211). One end of the spring (42) is connected to the bottom wall of the groove (211), and the other end extends upward along the groove (211) and abuts against the friction roller (41). The unlocking component is disposed on the base plate (21) and is used to drive the friction roller (41) to move downward along the groove (211).

2. The composite slab construction process for prefabricated steel structure residential buildings according to claim 1, characterized in that: The connector includes a buckle (22), with both ends of the buckle (22) respectively disposed on the first and last base plates (21).

3. The composite slab construction process for prefabricated steel structure residential buildings according to claim 1, characterized in that: The moving component (3) includes a drive motor (31) and rollers (32). Each of the substrates (21) is rotatably provided with rollers (32). The drive motor (31) is mounted on one of the rollers (32). The output shaft of the drive motor (31) is coaxially and fixedly connected to the roller (32).

4. The composite slab construction process for prefabricated steel structure residential buildings according to claim 1, characterized in that: The unlocking component includes an electromagnet (43), which is disposed on the lower side wall of the locking groove (211).

5. The composite slab construction process for prefabricated steel structure residential buildings according to claim 1, characterized in that: The friction roller (41) is provided with spherical sliders (411) at both ends, and the groove (212) is adapted to the sliders (411).

6. The composite slab construction process for prefabricated steel structure residential buildings according to claim 1, characterized in that: The substrate (21) has a slot (213) and the steel template (1) is connected to a rod (11) that is directly opposite to the slot (213).

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