Modularized support for cast-in-place beam construction and application thereof

Abstract

The invention provides a modular support for two-side construction and application of the modular support, the modular support comprises a plurality of layers of trusses formed by splicing, and the multiple layers of trusses are sequentially supported and connected through telescopic mechanisms from bottom to top to form the modular support; the at least two groups of supporting assemblies are positioned at the top of the modular bracket and form a supporting area of the prefabricated slab; the keel structure is located between the two sets of supporting assemblies, the keel structure is in lap joint with the top of the modular support, and a pouring area of the main beam is formed between the keel and the two sets of supporting assemblies; and the lifting assembly is located at the bottom of the modular support, in the pouring construction of the main beam, the lifting assembly ascends to enable the modular support to be in a suspended supporting state, and after pouring of the main beam is completed, the lifting assembly descends to enable the modular support to be in a landing contact state. Movement is convenient through the modularized support, and the modularized support and hoisting of the prefabricated slab are constructed in a staggered mode, so that the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of brackets used in aerial work, and in particular to a modular bracket and a construction method and application thereof. Background Art

[0002] In the construction process of semi-fabricated houses, the support system is an indispensable component. However, the manufacturing and installation process of traditional support systems is usually time-consuming and requires a lot of manpower, and there is a problem of repeated installation and removal. In response to the construction needs of large-volume tension beam structures, some existing support systems, although modular, often lack sufficient bearing capacity and cannot meet actual project needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a modular bracket and its application. The modularity of the bracket is utilized to enable it to be adjusted in the horizontal and vertical directions, thus saving the time for erecting and dismantling the scaffolding. The clever design of the support components allows the hoisting of the hollow slab and the casting of the beam to be carried out simultaneously.

[0004] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0005] Modular supports for cast-in-place beam construction, including,

[0006] Several layers of trusses are assembled, and from bottom to top, several layers of trusses are supported and connected in sequence by telescopic mechanisms to form a modular bracket;

[0007] at least two sets of support assemblies located on top of the modular support, the support assemblies forming a support area for the prefabricated panel;

[0008] A keel structure located between the two groups of support components, the keel structure overlaps the top of the modular bracket, and the keel and the two groups of support components form a casting area for the main beam;

[0009] The lifting component is located at the bottom of the modular bracket. During the main beam casting construction, the lifting component is raised to make the modular bracket in a suspended support state. After the main beam casting is completed, the lifting component is lowered to make the modular bracket in a ground contact state.

[0010] Furthermore, a cast-in-place layer is provided near the casting area of ​​the precast slab, and the precast slab forms an integral structure with the main beam through the casting of the cast-in-place layer.

[0011] Furthermore, the thickness of the cast-in-place layer is not less than 75 mm, and the cast-in-place layer is cast simultaneously with the main beam.

[0012] Furthermore, the keel structure is fixed on the top truss, and a wooden formwork for forming the bottom beam in the main beam is laid on the keel structure.

[0013] Furthermore, it also includes a cantilevered working platform located on the side of the modular bracket, and the cantilevered working platform is used as a tensioning platform for the main beam.

[0014] Furthermore, a roller is provided at the bottom of the modular bracket, and the lifting assembly is assembled on a mounting shell of the roller, or is staggered with the roller on the modular bracket.

[0015] Furthermore, it also includes a pulley on the side of the modular bracket, and the steel wire rope on the pulley forms a horizontal traction member.

[0016] The present invention also provides application of modular brackets for cast-in-place beam construction in building construction involving high-altitude operations.

[0017] Furthermore, the construction involving aerial work includes the construction of prefabricated housing projects, and the erection or maintenance of bridges or elevated roads.

[0018] Furthermore, the application specifically includes the following steps: splicing of the top trusses;

[0019] Installation of support components and keel structures along the top trusses;

[0020] The assembly of the remaining layers of trusses, the assembly of the telescopic mechanisms between adjacent trusses by plug-in connection to form a modular support, and the assembly of the lifting components;

[0021] After the main beam reinforcement is tied, the pouring area and the precast slabs are hoisted, and the cast-in-place layer of the precast slabs is poured;

[0022] Main beam tensioning;

[0023] Modular bracket lifting.

[0024] The present invention has the following beneficial effects:

[0025] The modular bracket in the present invention is designed as a modular structure, which can be flexibly combined and adjusted according to different layer heights and different beam thicknesses, thereby enhancing the versatility and applicability of the bracket system and reducing construction and maintenance costs.

[0026] The modular bracket in the present invention only needs to be assembled before the construction of the second floor slab, and no further assembly is required for subsequent floors. It only needs to be appropriately adjusted according to the floor height, saving the cost of manually erecting the scaffolding and the entire construction period. At the same time, it is equipped with a 1.2m cantilevered working platform and a 2.1m high protective fence. No additional external frame is required, and it can be used as a construction platform on the side of the building and as a protection measure for the edge.

[0027] In the present invention, the setting of the hollow slab support assembly allows the hoisting of the hollow slab and the construction of the beam body to be carried out simultaneously, ensuring the integrated construction of the prestressed prefabricated hollow slab and the cast-in-place tensioning beam, thereby eliminating the need to wait for the tensioning time of the main beam and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a modular bracket provided by the present invention;

[0029] Figure 2 One of the use state diagrams of the modular bracket provided by the present invention;

[0030] Figure 3 The second diagram of the use state of the modular bracket provided by the present invention;

[0031] Figure 4 An assembly diagram of the truss and keel structure provided by the present invention;

[0032] Figure 5 A flow chart of the application of the modular bracket provided by the present invention;

[0033] In the figure:

[0034] 1. Truss; 11. Bottom truss; 111. Second spiral top; 12. Top truss; 121. First spiral top; 13. Embedded steel bars; 14. Diagonal bracing; 2. Telescopic mechanism; 3. Prefabricated board; 4. Support assembly; 5. Keel structure; 6. Lifting assembly; 7. Cantilever work platform; 71. Diagonal support; 8. Pulley; 9. Bolts. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0036] See attached Figure 1-4 As shown, the modular support for cast-in-place beam construction in this embodiment includes several layers of trusses 1 assembled together. From bottom to top, the several layers of trusses 1 are supported and connected in sequence by telescopic mechanisms 2 to form a modular support; the telescopic mechanism 2 can then be used to adjust the construction height of the support, and the specific number of layers of the trusses 1 can be adjusted according to demand.

[0037] In order to place the prefabricated panels 3, at least two sets of support components 4 are provided on the top of the modular bracket, and the support components 4 form a support area for the prefabricated panels 3; during the hoisting, the prefabricated panels 3 can be directly placed on the support components 4 and supported by the modular bracket;

[0038] In order to complete the main beam construction, a keel structure 5 is also included between the two groups of support components 4. The keel structure 5 is overlapped on the top of the modular bracket. The keel 5 and the two groups of support components 4 form a casting area for the main beam, so that casting can be directly carried out during construction;

[0039] In order to adjust the height, facilitate construction, and subsequently move the modular bracket downward, a lifting assembly 6 is further provided at the bottom of the modular bracket. During the main beam casting construction, the lifting assembly 6 is raised so that the modular bracket is in a suspended support state. After the main beam casting is completed, the lifting assembly 6 is lowered so that the modular bracket is in a ground contact state. With this lifting method, the modular bracket is raised to the required height during construction, and lowered after the construction is completed for demoulding and subsequent removal of the modular bracket.

[0040] In this embodiment, in order to complete the integrated construction of the precast panel and the main beam, a cast-in-place layer (not shown in the figure) is provided near the casting area of ​​the precast panel 3, and the precast panel 3 is cast through the cast-in-place layer to form an integral structure with the main beam. Specifically, the thickness of the cast-in-place layer is not less than 75 mm, and the cast-in-place layer is cast at the same time as the main beam.

[0041] In this embodiment, the keel structure 5 is fixed on the top truss 12 of the top layer in the modular bracket. Specifically, it is fixed on the upper truss through several groups of bolts 5 plus gaskets, and then an 18mm wooden formwork is laid on the main keel as the bottom formwork of the beam.

[0042] In this embodiment, since the subsequent main beam needs to be tensioned, a cantilevered working platform 7 located at the side of the modular support is further included, and the cantilevered working platform 7 is used as a tensioning platform for the main beam. When tensioning, the platform provides an operating space, and then the tensioning is completed manually using ropes, etc.

[0043] In order to facilitate the movement of the modular bracket, a roller (not shown) is provided at the bottom of the modular bracket, and the lifting assembly 6 is assembled on the mounting shell of the roller, or is staggered with the roller on the modular bracket. The roller in this embodiment can be a universal wheel or other structure in the prior art.

[0044] In order to facilitate external construction workers to pull the entire modular bracket horizontally, a pulley 8 is further included on the side of the modular bracket, and the steel wire rope on the pulley 8 forms a horizontal traction member. Then, the horizontal traction is facilitated, and the entire modular bracket is pulled out with the roller to move horizontally.

[0045] The construction of a modular support consisting of two layers of trusses is introduced as an example, as follows:

[0046] See attached Figure 1-4As shown, the modular bracket in the present invention includes a bottom truss 11 assembled by steel and other profiles, and a top truss 12 located above the bottom truss 11 and connected to the bottom truss 11 through a telescopic mechanism 2. Since each truss 1 is a frame structure, a plug-in slot is provided on the frame structure in the horizontal direction, and the telescopic mechanism 2 is plug-connected with the top truss 12 and the bottom truss 11 through the plug-in slot. In this embodiment, the truss is used to make it have a modular design, so that it can carry a large-volume tension beam structure.

[0047] In this embodiment, the top truss 12 is provided with a cantilevered working platform 7; and a keel structure 5 fixedly connected to the top truss 12, and a cast-in-place beam bottom formwork template is provided at the support beam; a support assembly 4 consisting of a precast panel top support fixedly arranged on the top truss 12 passes through the keel structure 5, and the precast panel top support is connected to a first spiral top 121 located in the top truss 12, and the height of the support assembly 4 can be adjusted through the first spiral top 121, so that the height of the precast panel 3 can be adjusted synchronously to meet the requirements of construction space at different heights;

[0048] In this embodiment, in order to adjust the height of the modular bracket, it further includes a second screw top 111 that supports the bottom truss 11 and is located on the bottom truss 11. At this time, the second screw top constitutes a lifting component 6, which facilitates the lifting of the entire bracket.

[0049] In this embodiment, the cantilevered working platform 7 is located at the edge of the top truss 12 . In order to ensure its supporting strength, an inclined support 71 located at the top truss 12 is provided at the bottom of the cantilevered working platform 7 .

[0050] In order to ensure the support of the entire modular bracket, the present embodiment also includes a diagonal brace 14 fixed by embedded steel bars 13. The diagonal brace 14 is supported on the bottom truss 11. The diagonal brace is used to improve the supporting strength of the entire bracket. However, when the bracket is subsequently lowered, the diagonal brace needs to be lowered or removed.

[0051] In this embodiment, a hook-like structure is also provided on the top truss, the purpose of which is to hang the removed legs on it during the flying mold process, and hoist them together to the upper layer to facilitate the installation of the next layer.

[0052] In this embodiment, a roller is also included on the bottom truss 11, and the second screw top can be assembled on the mounting shell of the roller.

[0053] For the above modular bracket, the whole assembly process includes the following steps:

[0054] (1) Assemble the bottom truss 11 and the top truss 12 separately, and connect the bottom truss 11 and the top truss 12 by the telescopic mechanism 2 passing through the bottom truss 11. In this embodiment, the truss can be made of aluminum truss, and each layer of truss is supported and fixed by diagonal bracing;

[0055] (2) Install and secure the keel structure 5 and support beams on the top truss 12;

[0056] (3) The two trusses are fixed with a telescopic mechanism composed of a telescopic tube. At this time, the width of the plug-in slots on the two layers of trusses can be adjusted, for example, one large and one small, and then the large end of the telescopic tube is inserted into the large plug-in slot, and the small end is inserted into the small plug-in slot; at this time, the first screw top is selected for lifting;

[0057] (4) Install cast-in-place beams (i.e., bottom formwork of main beams), for example, using 18 mm wooden formwork;

[0058] (5) Install the support assembly 4;

[0059] (6) Install the cantilevered working platform 7 located on the side of the top truss 12 and the protective fence and protective net there;

[0060] (7) After installing the second spiral top at the bottom of the bottom truss, hoist the entire device to the construction location and use a lock to fix the entire device at the construction location.

[0061] In this embodiment, the modular support is further adjusted, specifically, the height of the prefabricated board is adjusted by the first screw top, and / or the height of the modular support is adjusted by the second screw top. ;

[0062] Or the electric hoist installed on the cantilevered working platform can be used to drive the sling to push the entire modular bracket to achieve horizontal movement.

[0063] In this embodiment, when the modular bracket is adjusted, the horizontal movement needs to rely on the bottom pulley 8. At this time, the steel wire rope is pulled to make the pulley 8 drive the modular bracket to move horizontally. After moving to a certain distance, the electric hoist on the crane ensures that the front lifting chain is the same length as the lifting chain fixed on the rear modular bracket. On the one hand, it assists the horizontal movement of the modular bracket, and on the other hand, it can maintain balance during the subsequent lifting. Keep balance during the lifting process.

[0064] The modular bracket in this embodiment is used in construction involving aerial work. Specifically, the construction involving aerial work includes the construction of prefabricated housing projects, the construction or maintenance of bridges or elevated roads.

[0065] The modular bracket in this embodiment is simple and easy to use, saves cost and construction time, has strong bearing capacity, and is suitable for semi-assembled house construction. It mainly solves the problems of low installation efficiency and high cost of bracket system in the construction of large-volume tension beam structure, and provides an efficient, reliable and versatile bracket solution.

[0066] The specific strength of the modular bracket in this embodiment is shown in Table 1:

[0067]

[0068] From the above table, we can see the load conditions in this embodiment, which are as follows:

[0069] DL1 tension beam concrete deadweight = 28.6KN / m 2 ; In this embodiment, DL1 to DL16 specifically represent load conditions and represent load parameters.

[0070] DL2 aluminum keel (140H) at the tension beam = 10.01KN / m;

[0071] Precast hollow slab right side load = 4.72KN / m 2 ;

[0072] DL3 aluminum keel at the tension beam (200H) = 19.82KN / m;

[0073] Precast hollow slab left side load = 4.72KN / m 2 ;

[0074] Outrigger load check (bottom telescopic tube);

[0075] DL4 aluminum keel (200H) = 19.82KN / m;

[0076] Surface concrete right side load = 1.95KN / m 2 ;

[0077] DL5 aluminum keel (200H) = 8.19KN / m;

[0078] Surface concrete left side load = 1.95KN / m 2 ;

[0079] DL6 aluminum keel (200H) = 8.19KN / m;

[0080] LL1 aluminum keel at the beam (140H) = 0.53KN / m;

[0081] Precast hollow slab dynamic load = 1.5KN;

[0082] LL2 aluminum keel (200H) = 6.3KN / m;

[0083] Precast hollow slab dynamic load = 1.5KN;

[0084] LL3 aluminum keel (200H) = 6.3KN / m;

[0085] LL4 additional load (2.5% of the total load considered);

[0086] Total beam load = 221.65KN;

[0087] Total precast hollow slab load = 122.91KN;

[0088] Total cast-in-place layer load = 50.78KN;

[0089] Total construction load = 50.685KN;

[0090] Total load = 446.02KN;

[0091] Additional load = 11.15KN;

[0092] The force on each truss (considering three trusses) = 3.72KN;

[0093] AC accidental load = 2.38KN;

[0094] The force on each truss (3 trusses) = 0.79KN;

[0095] WL wind load = 0.48KN / m 2 ;

[0096] Load combinations;

[0097] (1) Prefabricated panel installation stage = DL1+DL3+LL2+AC+WL;

[0098] (2) Casting stage (one side is prefabricated hollow slab)

[0099] =DL 1+DL2+DL3+DL5+LL 1+LL2+LL4+WL:

[0100] (3) Casting stage (both sides are prefabricated hollow-core slabs);

[0101] =DL 1+DL2+DL3+DL4+DL5+DL6+LL 1+LL2+LL3+LL4+WL:

[0102] Safety factor 2.0;

[0103] Outrigger inspection (60.3mm diameter aluminum telescopic tube);

[0104] Maximum axial force = 113.85KN;

[0105] Buckling resistance of telescopic mechanism;

[0106] Unsupported height of support legs (60mm diameter aluminum extension tube) = 750mm;

[0107] Effective cross-sectional area Aeff = 942 mm 2 ;

[0108] Calculation formula:

[0109]

[0110] parameter: K = 1;

[0111] Buckling capacity calculation:

[0112] N b，Rd = KxA eff f o / γM1=222.27KN>113.85KN OK!

[0113] Inspection of the screw top of the base;

[0114] Maximum reaction force of each leg = 114.08KN;

[0115] Check the shear resistance of the threads;

[0116] Number of threads transmitting load at the handle nut = 5;

[0117] Effective cross-sectional area = 2,025 mm 2 ;

[0118] Thread shear capacity:

[0119]

[0120] Force on each leg = 113.85KN;

[0121] Check the shear resistance of the clips at the connection between the telescopic tube and the truss (14mm diameter steel rod);

[0122] Shear area of ​​steel rod (4 times the area of ​​steel rod) = 615mm 2 ;

[0123] The yield strength of 4.6 grade steel is fy=400N / mm 2 ;

[0124]

[0125] Secondly, the modular bracket in this embodiment is processed and assembled as follows:

[0126] The application effects of the present invention are as follows:

[0127] (1) Significantly improved construction efficiency: The modular support system used in the super-high-rise building construction of this project shortened the original construction period from 28 days to 21 days. The modular support system does not need to be reassembled from the 3rd floor upwards, saving a lot of construction time.

[0128] (2) Reduced construction costs: Modular scaffolding reduces the cost of manual erection, and the high load-bearing capacity and stability of the scaffolding system reduce unexpected costs during the construction process.

[0129] (3) Construction safety is guaranteed: High-strength materials and construction platforms ensure the stability and safety of the support system, effectively prevent the occurrence of construction accidents, and improve the safety level of the construction site.

[0130] (4) Strong adaptability: The modular design of the support system allows the support units to be flexibly combined and adjusted according to different building structure requirements, making it suitable for various complex construction scenarios.

[0131] The application prospects of the present invention are as follows:

[0132] With the rise of semi-assembled house construction and the growth of market demand, the demand for efficient and cost-saving bracket systems is also increasing. The modular bracket system and construction method of the present invention have the advantages of being simple and easy to use, efficient and cost-saving, and are expected to be widely used in the market. For example, it can be used for construction involving high-altitude operations, including the construction of assembled house construction projects, the construction or maintenance of bridges or elevated roads.

[0133] The modular bracket system of the present invention has outstanding technical advantages such as ease of use, high load-bearing capacity, and cost savings, and is expected to occupy a place in the market competition.

[0134] In addition to the construction of semi-fabricated houses, the modular support system of the present invention is also applicable to other construction fields, such as the construction and maintenance of bridges, elevated roads and other projects, and has broad application prospects.

[0135] In summary, the modular support system and construction method thereof of the present invention have broad application prospects and market promotion space, and are expected to bring new technological innovations and development opportunities to the semi-fabricated housing construction industry.

[0136] The present invention also provides application of modular brackets for cast-in-place beam construction in building construction involving high-altitude operations.

[0137] The modular bracket of the present invention is used in a project in Singapore. What is the specific project? What are the surrounding environment and external influences?

[0138] Main construction contents of Singapore J120 project:

[0139] "Two Buildings": East Building (9-story podium, 47570m 2 ), West Building (8-storey podium, 75850m 2 ); The west building has 9-27 floors of commercial office building (57,000m2), and the east and west buildings each have 2 floors of underground parking.

[0140] "First Line": 260 meters of elevated line;

[0141] “One stop”: Jurong East Bus Interchange;

[0142] “Three bridges”: 2 pedestrian bridges, 1 two-floor steel connecting bridge (located on the 7th floor, 90m);

[0143] "Three channels": two connecting channels between the double-story basements of the east and west buildings, and one entrance ramp to the underground garage in the east building.

[0144] This project is a large-scale commercial, political and housing complex that will house multiple government units. The project has attracted much attention from all parties in Singapore and is a popular project in Singapore. It will also become a landmark building in the western region of Singapore in the future.

[0145] In this project, a glass curtain wall is set on the facade of the entire building. In order not to affect the installation of the glass curtain wall during the construction process, the construction external frame is cancelled. However, since the main beam of the building is a tensioning beam, a tensioning platform of 1.2-1.5m wide is required. Therefore, in this embodiment, a cantilever platform is set on the side of the modular bracket, saving about 5 million yuan in costs.

[0146] Specifically, the modular bracket composed of the above two layers of trusses is selected, and its application process is as follows:

[0147] Splicing of top trusses;

[0148] Installation of support components and keel structures along the top trusses;

[0149] The assembly of the remaining layers of trusses, the assembly of the telescopic mechanisms between adjacent trusses by plug-in connection to form a modular support, and the assembly of the lifting components;

[0150] After the main beam reinforcement is tied, the pouring area and the precast slabs are hoisted, and the cast-in-place layer of the precast slabs is poured;

[0151] Main beam tensioning;

[0152] Modular bracket.

[0153] In this embodiment, after the construction of one layer is completed, the modular bracket is also adjusted, and the specific adjustment is as follows:

[0154] (1) The height of the beam bottom template can be adjusted through the lower second spiral top;

[0155] (2) The elevation of the precast panel can be adjusted by the first screw top at the top supporting position;

[0156] (3) It can be moved by installing a pulley at the bottom;

[0157] (4) Flying model:

[0158] 1) The entire modular bracket is lowered by the second screw top at the bottom to complete the demoulding work, so that the modular bracket is separated from the cast-in-place beam;

[0159] 2) Lower the modular bracket through the lifting device and land it smoothly on the rollers;

[0160] 3) Connect the sling to the designated lifting point, and use the electric hoist to slowly move the modular bracket horizontally through the pulley, and then push it out from the side of the building;

[0161] (4) Use a tower crane to lift it to the upper construction layer and repeat the operation.

[0162] The modular bracket of the present invention has the following advantages:

[0163] (1) Easy to use: The bracket unit is simple and clear in design, easy to operate, and suitable for various construction projects;

[0164] (2) Good mobility and transferability: The modular bracket can be moved by installing rollers. The entire modular bracket does not need to be disassembled or rely on a unloading platform. It can be directly moved from the side of the building using lifting equipment and transferred to the upper construction layer;

[0165] (3) Modular design: The support is designed as a modular structure, which can be flexibly combined and adjusted according to different floor heights and beam thicknesses. This enhances the versatility and applicability of the support system and reduces construction and maintenance costs.

[0166] (4) Save labor costs and construction period: It only needs to be assembled before the second floor slab construction, and no assembly is required for subsequent floors. It only needs to be adjusted appropriately according to the floor height, saving the cost of manual scaffolding and the entire construction period;

[0167] (5) Floor edge safety protection: The floor edge bracket is equipped with a 1.2m cantilevered working platform and a 2.1m high protective fence. It can be used as a building edge construction platform and an edge protection measure without the need for additional external frames.

[0168] The present invention utilizes prefabricated panels to realize integrated construction of prefabricated panels combined with cast-in-place tension beams, as follows:

[0169] 1) The support assembly provided at the top of this embodiment enables the hoisting of the prefabricated slab composed of the hollow slab and the construction of the beam body to be carried out simultaneously without waiting for the tensioning time of the main beam, thereby improving the construction efficiency;

[0170] 2) The support assembly in this embodiment is adjustable, which effectively prevents the common quality problem of uneven bottom of the board, creating good conditions for the construction of subsequent processes;

[0171] 3) In this embodiment, a 75mm cast-in-place layer is designed on the upper layer of the prefabricated plate, and the steel mesh of the cast-in-place layer is overlapped with the main beam and cast at the same time, which effectively connects the prefabricated structure and the cast-in-place structure into a whole, thereby enhancing the force bearing capacity and integrity of the structure;

[0172] 4) After the first assembly of the modular bracket in this embodiment is completed, it is directly hoisted to the next layer, and the prefabricated hollow slab and beam surface construction can be carried out after the height is adjusted, saving construction time;

[0173] 5) Factory manufacturing of prefabricated panels reduces the uncertainty of on-site construction and reduces material waste. At the same time, through the optimized design of cast-in-place tension beams, the construction risk is further reduced, thereby reducing the overall project cost.

[0174] 6) The integrated construction method formed in this embodiment conforms to the concept of sustainable development, reduces construction noise and dust on site, reduces energy consumption through factory prefabrication, and better meets the requirements of modern construction projects for environmental protection and sustainability.

[0175] After the scheme of the present invention is applied to this project, the benefits generated are as follows:

[0176] (1) Significantly improved construction efficiency: The modular support system used in the super-high-rise building construction of this project shortened the original construction period from 28 days to 21 days. The modular support system does not need to be reassembled from the 3rd floor upwards, saving a lot of construction time.

[0177] (2) Reduced construction costs: Modular scaffolding reduces the cost of manual erection, and the high load-bearing capacity and stability of the scaffolding system reduce unexpected costs during the construction process.

[0178] (3) Construction safety is guaranteed: High-strength materials and construction platforms ensure the stability and safety of the support system, effectively prevent the occurrence of construction accidents, and improve the safety level of the construction site.

[0179] (4) Strong adaptability: The modular design of the support system allows the support units to be flexibly combined and adjusted according to different building structure requirements, making it suitable for various complex construction scenarios.

[0180] With the rise of semi-fabricated housing construction and the growth of market demand, the demand for efficient and cost-saving bracket systems is also increasing. The modular bracket system of the present invention and its application have the advantages of being simple and easy to use, efficient and cost-saving, and are expected to be widely used in the market.

[0181] The modular bracket system of the present invention has outstanding technical advantages such as ease of use, high load-bearing capacity, and cost savings, and is expected to occupy a place in the market competition.

[0182] In addition to the construction of semi-assembled houses, the support system of the present invention is also applicable to other construction fields, such as the construction and maintenance of bridges, elevated roads and other projects, and has broad application prospects.

[0183] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0184] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Modular bracket for cast-in-place beam construction, characterized in that: include, Several layers of trusses are assembled, and from bottom to top, several layers of trusses are supported and connected in sequence by telescopic mechanisms to form a modular bracket; at least two sets of support assemblies located on top of the modular support, the support assemblies forming a support area for the prefabricated panel; A keel structure located between the two groups of support components, the keel structure overlaps the top of the modular bracket, and the keel and the two groups of support components form a casting area for the main beam; The lifting component is located at the bottom of the modular bracket. During the main beam casting construction, the lifting component is raised to make the modular bracket in a suspended support state. After the main beam casting is completed, the lifting component is lowered to make the modular bracket in a ground contact state.

2. The modular support for cast-in-place beam construction according to claim 1, characterized in that: The prefabricated slab is provided with a cast-in-place layer near the casting area, and the prefabricated slab forms an integral structure with the main beam through the casting of the cast-in-place layer.

3. The modular support for cast-in-place beam construction according to claim 2, characterized in that: The thickness of the cast-in-place layer is not less than 75 mm, and the cast-in-place layer is cast at the same time as the main beam.

4. The modular support for cast-in-place beam construction according to claim 1, characterized in that: The keel structure is fixed on the top truss, and a wooden formwork for forming the bottom beam in the main beam is laid on the keel structure.

5. The modular support for cast-in-place beam construction according to claim 1, characterized in that: It also includes a cantilevered working platform located at the side of the modular support, and the cantilevered working platform is used as a tensioning platform for the main beam.

6. The modular support for cast-in-place beam construction according to claim 1, characterized in that: A roller is provided at the bottom of the modular bracket, and the lifting assembly is assembled on the mounting shell of the roller, or is staggered with the roller on the modular bracket.

7. The modular support for cast-in-place beam construction according to claim 1, characterized in that: It also includes a pulley on the side of the modular bracket, and the steel wire rope on the pulley forms a horizontal traction member.

8. Use of the modular support for cast-in-place beam construction as described in any one of claims 1 to 7 in building construction involving high-altitude operations.

9. The use according to claim 8, characterized in that: The construction work involving aerial work includes the construction of prefabricated housing projects, and the erection or maintenance of bridges or elevated roads.

10. The use according to claim 9, characterized in that: The application specifically includes the following steps: splicing of top trusses; Installation of support components and keel structures along the top trusses; The assembly of the remaining layers of trusses, the assembly of the telescopic mechanisms between adjacent trusses by plug-in connection to form a modular support, and the assembly of the lifting components; After the main beam reinforcement is tied, the pouring area and the precast slabs are hoisted, and the cast-in-place layer of the precast slabs is poured; Main beam tensioning; Modular bracket lifting.

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