Construction method of a formwork system

Abstract

The application discloses a construction method of a formwork support system, which comprises a support system and a formwork system; the support system comprises an adjustable base, the bottom end of the adjustable base is connected with a positioning point, and the top end of the adjustable base is sleeved with a vertical rod system; the vertical rod system is connected with a horizontal rod system through disc buckle nodes; a scissors support or an inclined rod is connected between the vertical rod system and the horizontal rod system; the formwork system comprises a top formwork and a wall formwork, the top formwork is matched with the adjustable support at the top of the support system, and the wall formwork is bolt-connected with the support system. Compared with the traditional method, the construction method has the advantages of stable structure, high construction efficiency, effective avoidance of material circulation difficulty and large pouring difficulty, and stable and safe overall formwork support system, and accidents are not prone to occur.

Description

Technical Field

[0001] This invention belongs to the field of underground powerhouse construction technology for hydraulic structures, and specifically relates to a construction method for a formwork support system. Background Technology

[0002] The underground powerhouse's main engine room floors (turbine floor, busbar floor, and generator floor) adopt a thick-plate structure design, with concrete sidewalls at the upstream and downstream ends. The middle floors are equipped with turbine casings, piers, and wind hoods, among other unit support structures. During construction, due to the high safety factor and difficulties in material turnover in the underground powerhouse, the reliability of formwork reinforcement and the stability of the beam support system are key engineering control challenges. Therefore, a construction method for the formwork support system needs to be designed to address these issues. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a construction method for a formwork support system. Compared with the traditional method, the construction method has a stable structure, high construction efficiency, and can effectively avoid the problems of difficult material turnover and difficult pouring. The overall formwork support system is stable, safe and not prone to accidents.

[0004] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is as follows: a template support system, including a support system and a template system; the support system includes an adjustable base, the bottom end of which is connected to a positioning point, and the top end of which is sleeved with a vertical pole system; the vertical pole systems are connected to a horizontal pole system through a disc buckle node; scissor braces or diagonal braces are connected between the vertical pole system and the horizontal pole system; the template system includes a top template and a wall template, the top template cooperates with the adjustable support at the top of the support system, and the wall template is bolted to the support system.

[0005] Preferably, the adjustable base includes a threaded rod with a support plate threadedly connected to its surface. An annular positioning groove is formed on the upper surface of the support plate. A sheet-like pressure sensor is installed on the bottom surface of the positioning groove. The pressure sensor is electrically connected to an alarm device on the surface of the support plate. The alarm device includes an alarm light and a built-in microcontroller. The pressure sensor is a flexible thin-film pressure sensor of model RP-S40-ST, and the microcontroller is an 80C51 microcontroller. During use, it can effectively monitor the stress of the sleeve during screwing in, preventing over-screwing. It can also detect the stress of the adjustable base after the bracket is assembled, preventing excessive stress between the sleeve and the thread from causing slippage and excessive local stress on the base, which could lead to structural problems. When the stress is too high, the alarm light illuminates to prompt the operator to replace or repair the unit.

[0006] Preferably, a sleeve is fitted at the top of the threaded rod, the sleeve is threadedly connected to the threaded rod, and the bottom of the sleeve engages with the positioning groove.

[0007] Preferably, the pole system includes multiple poles joined together, with the bottom end of the poles engaging with the sleeves and the top end of the poles connected to an adjustable support; the outer surface of the poles is connected to a disc buckle node.

[0008] Preferably, the crossbar system comprises multiple crossbars joined together, with the ends of the crossbars connected to a U-shaped slotted connector that engages with the connecting disc of the disc buckle node. In use, the position of the disc buckle node can be set in real time by connecting the adjusting screw to the upright, and the specific position can be finely adjusted by rotating the connecting disc, thus achieving precise and free adjustment of the disc buckle node position. Compared with the existing fixed structure, the adjustment method is more flexible and convenient.

[0009] Preferably, the outer surface of the connecting plate has multiple slots at equal intervals, one end of each slot has a plug hole, and the inner wall of the slot is connected to a spring limiting post that engages with the limiting groove on the side surface of the fastener. The inner ring of the connecting plate is threadedly connected to a threaded sleeve rod through an internal thread. The threaded sleeve rod is fitted on the outer surface of the upright, and the bottom end of the threaded sleeve rod contacts and engages with an adjusting ring fitted on the outer surface of the upright.

[0010] Preferably, the adjusting ring is fixed to the outer surface of the upright by bolts; the outer ring of the adjusting ring is hinged with multiple limiting rods, the top of the limiting rod is connected to a tray that contacts the end of the threaded sleeve rod, and the bottom of the limiting rod is connected to an arc-shaped clamp that abuts against the outer surface of the upright; in use, the height position of the disc buckle node can be quickly adjusted by adjusting the adjusting ring, and then finely adjusted by the threaded engagement between the connecting plate and the threaded sleeve rod, thus realizing the rapid adjustment of the disc buckle node position.

[0011] Preferably, the adjustable support includes an adjusting nut connected to the top of the upright, the adjusting nut having an internal threaded connection to a lead screw, and the top of the lead screw being connected to a support.

[0012] Preferably, the top formwork is connected to the back of the back rib and the bracket for engagement; the vertical walers of the wall formwork are made of square timber, and the horizontal walers are made of double steel pipes connected with bolts, and the outer side is tightened with nuts; square timber is connected at the joints of the wall formwork as a docking mechanism.

[0013] Preferably, the construction method of the above-mentioned formwork support system includes the following steps: S1. After laying out the dimensions according to the support frame configuration drawing, arrange the adjustable bases to the positioning points; S2, insert the sleeve of the base upwards onto the upper part of the adjustable base, and the lower edge of the sleeve must be completely inserted into the positioning groove of the wrench's force-bearing plane; S3, Disc buckle node installation: Adjust the threaded sleeve of the disc buckle node to the upper and lower positions of the upright, and then tighten the limiting ring so that the bottom end of the threaded sleeve contacts the tray on the surface of the limiting ring; install all disc buckle nodes in sequence. S4, First layer horizontal bar installation: Insert the buckle of the horizontal bar head into the slot of the connecting plate, and fix it by installing the pin in the insertion hole, so that the spring limit post is inserted into the limit groove; S5, Pole Installation: Insert the long end of the pole into the sleeve of the adjustable base until the pole is inserted to the bottom of the sleeve; S6, Second layer horizontal bar installation: Insert the buckle of the horizontal bar head into the slot of the connecting plate, and fix it by installing the pin in the insertion hole, so that the spring limit post is inserted into the limit groove; S7, Diagonal bracing installation: Diagonal bracing is installed on the side of the pan-type scaffold to maintain the stability of the scaffold. S8, follow the steps above to expand to the entire floor; S9, installation of top and wall formwork.

[0014] Preferably, the vertical and horizontal structures are cast separately so that they can be connected to the support frame to form a reliable whole; at the locations where there are frame columns on the outer perimeter and in the middle of the columns, a fixed point is set at a certain horizontal and vertical interval with the building structure to improve overall stability and resistance to lateral deformation.

[0015] The beneficial effects of this invention are as follows: 1. Compared with traditional methods, this construction method has a stable structure, high construction efficiency, and lightweight materials that are easy to transport and manage. It can effectively avoid problems such as difficulty in material turnover and difficulty in pouring. The overall formwork support system is stable, safe, and less prone to accidents. 2. The present invention has a pressure sensor detection unit set at the adjustable base, which can effectively monitor the stress of the sleeve being screwed in and avoid over-screwing; it can also detect the stress of the adjustable base after the bracket is assembled, so as to avoid excessive stress between the sleeve and the thread causing stripping, and avoid the danger of excessive local base stress causing structural problems. When the stress is too high, the alarm light will light up to prompt the operator to replace and repair. 3. The present invention is equipped with a disc buckle node height adjustment mechanism that allows for both rapid coarse and precise adjustment, which can effectively adjust the height of the disc buckle node; the limiting ring can achieve self-locking by utilizing the self-weight of the crossbar system, and by compressing the limiting rod by gravity, the limiting rod can be tightened onto the upright, thereby avoiding limit failure due to excessive gravity of the crossbar system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the adjustable base in this invention; Figure 3 This is a schematic diagram of the adjustable support structure in this invention; Figure 4This is a schematic diagram of the connection between the disc buckle node and the upright in this invention; Figure 5 This is a schematic diagram of the connecting disc of the disc-locking node in this invention; Figure 6 This is a schematic diagram of the fastener structure in this invention; Figure 7 This is a schematic diagram of the adjusting ring in this invention; The attached diagram is labeled as follows: Adjustable base 1, threaded rod 11, support plate 12, positioning groove 13, sleeve 14, alarm device 15, adjustable support 2, adjusting nut 21, screw 22, support 23, upright 31, disc buckle node 4, connecting disc 41, adjusting screw 43, crossbar 51, buckle connector 52, slot 61, insertion hole 62, spring limit post 63, limit groove 64, adjusting ring 71, limit rod 72, tray 73, arc-shaped clamp 74. Detailed Implementation

[0017] Example 1: like Figures 1-7 In the present invention, a formwork support system includes a support system and a formwork system; the support system includes an adjustable base 1, the bottom end of which is connected to a positioning point, and the top end of which is sleeved with a system of uprights 31; the uprights 31 are connected to a system of horizontal bars 51 via disc buckle nodes 4; scissor braces or diagonal braces are connected between the uprights 31 and the horizontal bars 51; the formwork system includes a top formwork and a wall formwork, the top formwork engaging with an adjustable support 232 at the top of the support system, and the wall formwork being bolted to the support system.

[0018] Preferably, the adjustable base 1 includes a threaded rod 11, with a support plate 12 threadedly connected to the surface of the threaded rod 11. An annular positioning groove 13 is formed on the upper surface of the support plate 12. A sheet-like pressure sensor is provided on the bottom surface of the positioning groove 13. The pressure sensor is electrically connected to an alarm device 15 on the surface of the support plate 12. The alarm device 15 includes an alarm light and a built-in microcontroller. The pressure sensor is a flexible thin-film pressure sensor of model RP-S40-ST, and the microcontroller is an 80C51 microcontroller. In use, it can effectively monitor the stress of the sleeve 14 during screwing in, avoiding over-screwing. It can also detect the stress of the adjustable base 1 after the bracket is assembled, avoiding excessive stress between the sleeve 14 and the thread, which could lead to stripping of the thread and excessive stress on the local base, causing structural problems. When the stress is too high, the alarm light will illuminate to prompt the operator to replace or repair it.

[0019] Preferably, a sleeve 14 is fitted onto the top end of the threaded rod 11, the sleeve 14 is threadedly connected to the threaded rod 11, and the bottom of the sleeve 14 engages with the positioning groove 13.

[0020] Preferably, the pole 31 system includes multiple poles 31 connected together, the bottom end of the pole 31 is inserted into the sleeve 14, and the top end of the pole 31 is connected to an adjustable support 232; the outer surface of the pole 31 is connected to a disc buckle node 4.

[0021] Preferably, the crossbar 51 system includes multiple crossbars 51 connected together. The ends of the crossbars 51 are connected to fasteners 52 with U-shaped slots 61, which are inserted into the connecting disc 41 of the disc buckle node 4. In use, the position of the disc buckle node 4 can be set in real time by connecting the adjusting screw 43 to the upright 31. Moreover, the specific position can be finely adjusted by rotating the connecting disc 41, which realizes the function of precisely and freely adjusting the position of the disc buckle node 4. Compared with the existing fixed structure, the adjustment method is more flexible and convenient.

[0022] Preferably, the outer surface of the connecting plate 41 is provided with a plurality of slots 61 at equal intervals, one end of the slot 61 is provided with a plug hole 62, and the inner wall of the slot 61 is connected to a spring limiting post 63 which engages with the limiting groove 64 on the side surface of the buckle 52; the inner ring of the connecting plate 41 is threadedly connected to the threaded sleeve rod through the internal thread, the threaded sleeve rod is sleeved on the outer surface of the upright 31, and the bottom end of the threaded sleeve rod contacts and engages with the adjusting ring 71 sleeved on the outer surface of the upright 31.

[0023] Preferably, the adjusting ring 71 is fixed to the outer surface of the upright 31 by bolts; multiple limiting rods 72 are hinged to the outer ring of the adjusting ring 71, the top of the limiting rod 72 is connected to a tray 73 which contacts and engages with the end of the threaded sleeve rod, and the bottom of the limiting rod 72 is connected to an arc-shaped clamp 74 which abuts and engages with the outer surface of the upright 31; in use, the height position of the disc buckle node 4 can be quickly adjusted by adjusting the adjusting ring 71, and then fine adjustment can be made by the threaded engagement between the connecting disc 41 and the threaded sleeve rod, thus realizing the rapid adjustment of the position of the disc buckle node 4.

[0024] Preferably, the adjustable support 232 includes an adjusting nut 21 connected to the top of the upright 31, the adjusting nut 21 is internally threaded with a lead screw 22, and the top of the lead screw 22 is connected to the support 23.

[0025] Preferably, the back of the top formwork is connected to the back rib and the bracket 23 for engagement; the vertical walers of the wall formwork are made of square timber, and the horizontal walers are made of double steel pipes connected with bolts, and the outer side is tightened with nuts; square timber is connected at the joint of the wall formwork as a docking mechanism.

[0026] Preferably, the construction method of the above-mentioned formwork support system includes the following steps: S1. After laying out the dimensions according to the support frame configuration drawing, arrange the adjustable base 1 to the positioning point; S2, insert the sleeve 14 of the base upwards onto the adjustable base 1, and the lower edge of the sleeve 14 must be completely inserted into the positioning groove 13 of the wrench force plane; S3, Installation of disc buckle node 4: Adjust the threaded sleeve of disc buckle node 4 to the upper and lower positions of the upright 31, and then tighten the limiting ring so that the bottom end of the threaded sleeve contacts the tray 73 on the surface of the limiting ring; install all disc buckle nodes 4 in sequence. S4, First layer horizontal bar installation: Insert the buckle 52 of the horizontal bar 51 into the slot 61 of the connecting plate 41, and fix it by installing the pin in the insertion hole 62, so that the spring limit post 63 is inserted into the limit groove 64. S5, Installation of upright pole 31: Insert the long end of upright pole 31 into the sleeve 14 of adjustable base 1, so that upright pole 31 is inserted to the bottom of sleeve 14; S6, Second layer horizontal bar installation: Insert the buckle 52 of the horizontal bar 51 head into the slot 61 of the connecting plate 41, and fix it by installing the pin in the insertion hole 62, so that the spring limit post 63 is inserted into the limit groove 64. S7, Diagonal bracing installation: Diagonal bracing is installed on the side of the pan-type scaffold to maintain the stability of the scaffold. S8, follow the steps above to expand to the entire floor; S9, installation of top and wall formwork.

[0027] Preferably, the vertical and horizontal structures are cast separately so that they can be connected to the support frame to form a reliable whole; at the locations where there are frame columns on the outer perimeter and in the middle of the columns, a fixed point is set at a certain horizontal and vertical interval with the building structure to improve overall stability and resistance to lateral deformation.

[0028] Example 2: (1) Construction of roof slab formwork: The top slab formwork uses 15mm film-coated plywood, with 6.3# channel steel for the main joists and 40×80mm timber for the secondary joists, with a back rib spacing of 150mm. During formwork installation, ensure that there are joists below the joints, that the joints are tight, and that there are no misalignments on the surface.

[0029] (2) Support system: The spacing of the longitudinal and transverse uprights 31 of the slab base plate buckle steel pipe scaffold is shown in the floor slab formwork parameter table. The top of the upright 31 is equipped with a top support. The screw extending out of the top or bottom of the steel pipe shall not exceed 300mm, and the screw extending into the steel pipe shall not be less than 150mm. The gap between the outer diameter of the screw and the inner diameter of the upright steel pipe shall not exceed 3mm. During installation, it should be ensured that the upper and lower parts are concentric.

[0030] According to the design drawings, the height of each floor of the main plant shall not exceed 8m, and the structure shall be arranged as follows: vertical diagonal bracing shall be installed on the first span of each floor on the outer facade of the frame, and vertical diagonal bracing shall be installed in both longitudinal and transverse directions every 5 spans from bottom to top in the internal area of ​​the frame, or large scissor bracing shall be erected using φ48*3.25mm coupler steel pipes.

[0031] (3) Wall formwork erection: According to the design drawings, the main plant building is equipped with 1000mm thick reinforced concrete sidewalls upstream and downstream. The shear walls are constructed of film-coated plywood, connected with Φ14@750 bolts. Vertical walers are made of 40×100@200 square timber, while horizontal walers are made of Φ48×3.25@750 double steel pipes connected with bolts, tightened with nuts on the outer side. Two 40×80 bolts are used to secure the formwork joints to prevent grout leakage and displacement. To ensure the stability of the structural system, Φ48 steel pipes are installed along the entire length of the outer wall, with the outermost bolt at the wall end required to be less than 150mm from the wall end.

[0032] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The embodiments and features described in these embodiments can be arbitrarily combined without conflict. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A construction method for a formwork support system, characterized in that: Includes the following steps: S1. After laying out the dimensions according to the support frame configuration drawing, arrange the adjustable base (1) to the positioning point; S2, insert the sleeve (14) of the base upwards onto the adjustable base (1), and the lower edge of the sleeve (14) must be completely inserted into the positioning groove (13) of the wrench force plane; S3, installation of disc buckle nodes: Adjust the threaded sleeve (43) of the disc buckle node (4) to the upper and lower positions of the upright, and then tighten the adjusting ring (71) so that the bottom end of the threaded sleeve (43) contacts the tray (73) on the surface of the adjusting ring (71); install all disc buckle nodes (4) in sequence. S4, First layer horizontal bar installation: Insert the buckle (52) of the horizontal bar (51) head into the slot (61) of the connecting plate (41), and fix it by installing the pin in the insertion hole (62) so that the spring limiting post (63) is inserted into the limiting groove (64); S5, pole installation: Insert the long end of the pole (31) into the sleeve (14) of the adjustable base (1) so that the pole (31) is inserted to the bottom of the sleeve (14); S6, Second layer horizontal bar installation: Insert the buckle (52) of the horizontal bar (51) head into the slot (61) of the connecting plate (41), and fix it by installing the pin in the insertion hole (62) so that the spring limit post (63) is inserted into the limit groove (64); S7, Diagonal bracing installation: Diagonal bracing is installed on the side of the pan-type scaffold to maintain the stability of the scaffold. S8, follow the steps above to expand to the entire floor; S9, installation of top and wall formwork.

2. The construction method of the formwork support system according to claim 1, characterized in that: The vertical and horizontal structures are cast separately so that they can be connected to the supporting frame to form a reliable whole. At the locations where there are frame columns on the outer perimeter and in the middle of the columns, a fixed point is set at a certain horizontal and vertical interval with the building structure to improve overall stability and resistance to lateral deformation.

3. The construction method of the formwork support system according to claim 1, characterized in that: A construction method for a formwork support system is based on the formwork support system, which includes a support system and a formwork system. The support system includes an adjustable base (1), the bottom of which is connected to a positioning point, and the top of which is sleeved with a vertical pole system. The vertical pole systems are connected to a horizontal pole system via a disc buckle node. The vertical pole system and the horizontal pole system are connected by scissor braces or diagonal braces. The formwork system includes a top formwork and a wall formwork. The top formwork is fitted with an adjustable support (2) at the top of the support system, and the wall formwork is bolted to the support system. The back of the top formwork is connected to a back rib that engages with the support (23). The joints of the wall formwork are connected by a butt joint mechanism. The horizontal pole system includes multiple horizontal poles (51) joined together. The ends of the horizontal poles (51) are connected to a U-shaped slotted buckle joint (52) that engages with the connecting disc (41) of the disc buckle node (4). 41) Multiple slots (61) are evenly spaced on the outer surface. One end of the slot (61) is provided with a plug hole (62). The inner wall of the slot (61) is connected to a spring limiting post (63) and the limiting groove (64) on the side surface of the buckle (52) is engaged. The inner ring of the connecting plate (41) is threaded to the threaded sleeve (43) through the internal thread. The threaded sleeve (43) is sleeved on the outer surface of the upright (31). The bottom end of the threaded sleeve (43) is in contact with the adjusting ring (71) sleeved on the outer surface of the upright (31). The adjusting ring (71) is fixed to the outer surface of the upright (31) by bolts. Multiple limiting rods (72) are hinged to the outer ring of the adjusting ring (71). The top end of the limiting rod (72) is connected to a tray (73) and in contact with the end of the threaded sleeve (43). The bottom end of the limiting rod (72) is connected to an arc-shaped clamp (74) and in contact with the outer surface of the upright (31).

4. The construction method of the formwork support system according to claim 3, characterized in that: The adjustable base (1) includes a threaded rod (11), and a support plate (12) is threadedly connected to the surface of the threaded rod (11). An annular positioning groove (13) is opened on the upper surface of the support plate (12). A sheet-like pressure sensor is provided on the bottom surface of the positioning groove (13). The pressure sensor is electrically connected to an alarm device (15) on the surface of the support plate (12). The alarm device (15) includes an alarm light and a built-in microcontroller.

5. A construction method for a formwork support system according to claim 4, characterized in that: The top end of the threaded rod (11) is fitted with a sleeve (14), which is threadedly connected to the threaded rod (11), and the bottom of the sleeve (14) engages with the positioning groove (13).

6. A construction method for a formwork support system according to claim 3, characterized in that: The pole system includes multiple poles (31) connected together. The bottom end of the pole (31) is inserted into the sleeve (14), and the top end of the pole (31) is connected to an adjustable support (2). The outer surface of the pole (31) is connected to a disc buckle node (4).

7. A construction method for a formwork support system according to claim 3, characterized in that: The adjustable support (2) includes an adjusting nut (21) connected to the top of the upright (31), and a screw (22) is internally threaded onto the adjusting nut (21), with a support (23) connected to the top of the screw (22).

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