Splicing type combined flat beam

Abstract

The utility model provides a splicing type combined flat beam, and belongs to the field of flat beams. The method is used for solving the problem that in an emergency construction scene, a precast beam cannot be adjusted and constructed according to the required beam width and beam height. The combined flat beam comprises a splicing beam formed by splicing a plurality of flat beams; the splicing connection unit comprises a flat beam splicing bulge and a flat beam splicing groove; the flat beam splicing bulge and the flat beam splicing groove are respectively arranged on two opposite side walls of the flat beam and are used for splicing and positioning the flat beam; the first penetrating channels penetrate through the side wall of the flat beam, and the first penetrating channels are communicated to form a first steel cable channel; the first prestress steel cables penetrate through the first steel cable channels, and the two ends of the first prestress steel cables are fixed to the two sides of the splicing beams correspondingly. Through the arrangement, the flat beams are spliced to form spliced beams of different specifications, so that the problem that the beam width and the beam height of a precast beam cannot be adjusted and built in an emergency building scene is solved.

Description

Technical Field

[0001] This utility model belongs to the field of flat beams, and in particular relates to a splicable composite flat beam. Background Technology

[0002] In today's construction industry, which pursues efficiency and sustainable development, prefabricated buildings, with their factory-prefabricated components and rapid on-site assembly, have greatly shortened the construction cycle and become an important direction for modern building development. Among them, prefabricated beams, as a key component of the main structural frame of prefabricated buildings, play a core role in bearing floor loads and connecting columns.

[0003] The invention patent with authorization announcement number CN101575894B specifically discloses a precast concrete beam, including a beam body composed of reinforcing bars and concrete encasing the reinforcing bars. The top surface of the beam body has multiple stirrups with their bottom ends embedded in the concrete and their top ends exposed, as well as multiple main reinforcing bars fixed to the stirrups. The main reinforcing bars are arranged along the length of the beam body, with a gap between the bottom of the lowest main reinforcing bar and the top surface of the beam body. This precast concrete is pre-embedded inside the concrete beam by placing the main reinforcing bars in a casting mold. Therefore, the length, width, and height of this precast concrete beam are customized according to actual needs. However, in situations such as emergency rescue projects requiring the rapid construction of temporary support structures or emergency passages, the on-site conditions are complex and the dimensional requirements are varied. Precast concrete beams need to be individually molded and cast for different sizes, resulting in the need to stock dozens of specifications of precast beams for the same project. This leads to long customization and production cycles for precast concrete beams, and workers must wait for the customized concrete beams to arrive before they can be erected, thus causing delays in construction progress.

[0004] In summary, the shortcomings of existing precast concrete beams are that they cannot be quickly adjusted and assembled based on the actual measured beam width and height when dealing with emergency assembly scenarios with varying size requirements. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a splicable and combinable flat beam, which can be spliced ​​to form prefabricated beams of different specifications, in order to solve the problem that in emergency construction scenarios with variable size requirements, prefabricated beams cannot be quickly adjusted according to the beam width, beam height and span measured on site and thus cannot be quickly assembled.

[0006] To achieve the above and other related objectives, this utility model provides a splicable and combinable flat beam, the combinable flat beam comprising:

[0007] A spliced ​​beam, comprising several flat beams, wherein the spliced ​​beam is formed by splicing several flat beams along the height direction of the flat beams;

[0008] The splicing connection unit includes several flat beam splicing protrusions and several flat beam splicing grooves; the flat beam splicing protrusions and flat beam splicing grooves are arranged on two opposite side walls of the flat beam along the splicing direction of the flat beam, and two adjacent flat beam splicing protrusions and flat beam splicing grooves cooperate with each other.

[0009] Several first through channels, the first through channels penetrate the side wall of the flat beam along the splicing direction of the flat beam, the several first through channels are connected to form a first steel cable channel, the first steel cable channel penetrates the two opposite side walls of the spliced ​​beam;

[0010] Several first prestressed steel cables pass through a first steel cable channel, and the two ends of the first prestressed steel cables are respectively fixed to opposite sides of the splicing beam.

[0011] As an optional solution, the flat beam includes a modular beam;

[0012] Several modular beams are spliced ​​together along the length of the modular beams to form a flat beam. The flat beam splicing protrusions and flat beam splicing grooves are respectively provided on two opposite side walls of the modular beam along the splicing direction of the flat beam; the first through channel passes through the opposite side walls of the modular beam along the splicing direction of the flat beam.

[0013] The composite flat beam also includes a second through channel and a second prestressed steel cable;

[0014] The second through channel completely penetrates both ends of the module beam along its length. The distance between the axis of the second through channel and the axis of the first through channel is greater than the sum of the radius of the first through channel and the radius of the second through channel. The second through channels of the module beams within the same flat beam are connected sequentially to form the second cable channel.

[0015] The second prestressed steel cable passes through the second steel cable channel. One end of the second prestressed steel cable is fixed to the first module beam spliced ​​along the length direction, and the other end of the second prestressed steel cable is fixed to the last module beam.

[0016] As an optional solution, the splicing connection unit also includes module beam splicing protrusions and module beam splicing grooves;

[0017] The contact surface between two adjacent modular beams within the same flat beam is the modular beam splicing surface; the modular beam splicing protrusion and the modular beam splicing groove are provided at the modular beam splicing surface, and the modular beam splicing protrusion is inserted into the modular beam splicing groove for splicing and positioning of the modular beam.

[0018] As an alternative, multiple first through channels are arranged in an array along the length of the module beam.

[0019] As an optional solution, the composite flat beam further includes a third through channel and a third prestressed steel cable;

[0020] The number of flat beams is 2n+1, and n is greater than or equal to 1;

[0021] The flat beam located in the middle of several flat beams is called the middle flat beam, the module beam within the middle flat beam is called the middle module beam, and the contact surface between two adjacent middle module beams is called the splicing surface of the middle module beam.

[0022] The third through channel is located inside the intermediate module beam. The axis of the third through channel is parallel to the axis of the second through channel. The two first through channels near the splicing surface of the intermediate module beam are the first passage and the second passage, respectively. The third through channel passes through the splicing surface of the intermediate module beam, and one end of the third through channel is connected to the first passage, and the other end of the third through channel is connected to the second passage. The third through channel, the first passage, and the second passage form a first H-shaped passage.

[0023] The starting points of the first path and the second path are respectively set on two opposite side walls of the splicing beam;

[0024] The passage from the starting point of the first path to the intersection of the first path and the third cable channel is the first vertical channel, and the passage from the starting point of the second path to the intersection of the second path and the third cable channel is the second vertical channel; the third prestressed cable passes through the first vertical channel, the third through channel and the second vertical channel in sequence to form a Z-shaped cable path, and the two ends of the third prestressed cable are respectively fixed on the opposite side walls of the splicing beam.

[0025] As an optional solution, a second H-shaped path is arrayed at the corresponding position below the first H-shaped path;

[0026] There are two third prestressed steel cables. The first third prestressed steel cable is located in the first H-shaped passage, and the second third prestressed steel cable is located in the second H-shaped passage. The Z-shaped cable paths of the two third prestressed steel cables are symmetrically arranged along the center of the intersection of the third through passage and the splicing surface of the intermediate beam.

[0027] As an optional solution, the first, second, and third cable channels are all filled with concrete.

[0028] As an optional feature, the flat beam splicing protrusion and the modular beam splicing protrusion are conical;

[0029] The flat beam splicing groove and the modular beam splicing groove are conical.

[0030] As described above, the column-beam splicing structure of the prefabricated building of this utility model has at least the following beneficial effects:

[0031] 1. This application achieves modular splicing of flat beams along their height or width by setting a first through channel and a first prestressed steel cable, enabling rapid assembly into spliced ​​beams of different cross-sectional specifications. Dynamic adjustment of the spliced ​​beams according to actual engineering needs enhances the adaptability of the composite flat beams and solves the problem that precast beams cannot be quickly adjusted and assembled based on actual on-site measurements of beam width and height.

[0032] 2. This application achieves flexible adjustment of the flat beam length by setting a second through channel and a second prestressed steel cable. By splicing or splitting the modular beams along the length direction, flat beam structures with different spans can be formed. This feature not only enhances the adaptability of the flat beam to different span load-bearing requirements, but also shortens the length of the flat beam through the detachable design, effectively reducing space occupation during transportation, reducing the difficulty and cost of oversized transportation, and improving construction convenience.

[0033] 3. This application incorporates a third through-channel and a third prestressed steel cable, using a Z-shaped prestressed steel cable path to achieve a composite connection between the modular beams in both the height and length directions. Compared to traditional single-direction connection structures, this enhances the overall load-bearing capacity and stability of the composite flat beam structure.

[0034] 4. This application provides flat beam splicing protrusions and flat beam splicing grooves. After the flat beams are spliced ​​into a spliced ​​beam, flat beam splicing protrusions and flat beam splicing grooves are respectively provided on the opposite side walls of the spliced ​​beam. During the subsequent assembly of the floor slab, the floor slab can be positioned and spliced ​​through the flat beam splicing protrusions and flat beam splicing grooves. Attached Figure Description

[0035] Figure 1 The diagram shown is a three-dimensional structural schematic of the combined flat beam of this utility model.

[0036] Figure 2 The image shown is an axial sectional view of the flat beam of this utility model.

[0037] Figure 3 The diagram shown is a cross-sectional view of the flat beam of this utility model.

[0038] Figure 4 The diagram shown is an exploded view of the middle flat beam of this utility model.

[0039] Figure 5 The diagram shows a cross-sectional view of the middle flat beam of this utility model.

[0040] Figure 6 The diagram shown is a structural cross-sectional view of the composite flat beam of this utility model.

[0041] Figure 7 The diagram shown is a partial structural cross-sectional view of the composite flat beam of this utility model.

[0042] Figure 8 The image shown is an axial sectional view of the combined flat beam of this utility model.

[0043] Figure 9 The diagram shows the splicing of the combined flat beam and floor slab according to this utility model.

[0044] Figure 10 The diagram shows a special combination of the composite flat beam of this utility model.

[0045] In the diagram: 1. Spliced ​​beam; 2. Spliced ​​connection unit; 3. First through-passage; 4. First prestressed steel cable; 5. Second through-passage; 6. Second prestressed steel cable; 7. Third through-passage; 8. Third prestressed steel cable; 9. Floor slab;

[0046] 101. Flat beam; 102. Middle flat beam;

[0047] 201. Flat beam splicing protrusion; 202. Flat beam splicing groove; 203. Modular beam splicing protrusion; 204. Modular beam splicing groove;

[0048] 1011. Modular beam;

[0049] 1021. Intermediate module beam. Detailed Implementation

[0050] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0051] Please see Figures 1 to 10 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0052] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0053] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 9 This utility model provides a splicable composite flat beam, which includes:

[0054] The splicing beam 1 includes a plurality of flat beams 101, which are spliced ​​together along the height direction of the flat beams 101; the number of flat beams 101 is 2n+1, and n is greater than or equal to 1.

[0055] Here, because the width of the flat beam 101 is greater than its height, the longer side of the cross-section of the flat beam 101 is in the width direction, and the shorter side is in the height direction.

[0056] Here, the splicing beam 1 is spliced ​​together by an odd number of flat beams 101. The number of flat beams 101 is not limited and can be 3, 5 or 7. In this embodiment, the splicing beam 1 is spliced ​​together by three flat beams 101.

[0057] The splicing connection unit 2 includes a plurality of flat beam splicing protrusions 201 and a plurality of flat beam splicing grooves 202; the flat beam splicing protrusions 201 and flat beam splicing grooves 202 are arranged on two opposite side walls of the flat beam 101 along the splicing direction of the flat beam 101, and the flat beam splicing protrusions 201 and flat beam splicing grooves 202 of two adjacent flat beams 101 cooperate with each other;

[0058] The flat beam 101 includes a modular beam 1011; a plurality of modular beams 1011 are spliced ​​together along the length direction of the modular beams 1011 to form a flat beam 101, and flat beam splicing protrusions 201 and flat beam splicing grooves 202 are respectively provided on two opposite side walls of the modular beam 1011 along the splicing direction of the flat beam 101; the first through channel 3 penetrates through the opposite side walls of the modular beam 1011 along the splicing direction of the flat beam 101;

[0059] Here, the number of modular beams 1011 is not limited. Multiple modular beams 1011 can be spliced ​​together along the length of the modular beams 1011 to form a flat beam 101. In this embodiment, the flat beam 101 is formed by splicing two modular beams 1011.

[0060] Here, the width direction of the modular beam 1011 is the width direction of the flat beam 101, the height direction of the modular beam 1011 is the height direction of the flat beam 101, the height direction of the splicing beam 1 is the width direction of the flat beam 101, the width direction of the splicing beam 1 is the height direction of the flat beam 101, the height direction of the combined flat beam is the height direction of the splicing beam 1, and the width direction of the combined flat beam is the width direction of the splicing beam 1.

[0061] Here, after the flat beams 101 are spliced ​​together to form the spliced ​​beam 1, several flat beam splicing protrusions 201 and several flat beam splicing grooves 202 are respectively provided on the two opposite side walls of the spliced ​​beam 1.

[0062] Please refer to this section. Figure 9 The precast floor slab 9 is also provided with several matching flat beam splicing protrusions 201 and several flat beam splicing grooves 202 on the opposite side walls. When assembling the precast floor slab 9, the flat beam splicing protrusions 201 and splicing grooves 202 on both sides of the splicing beam 1 can also be used for splicing positioning when assembling the precast floor slab 9.

[0063] Here, the number of flat beam splicing protrusions 201 and flat beam splicing grooves 202 is not limited; in this embodiment, two flat beam splicing protrusions 201 are provided on the side wall of the module beam 1011, and two flat beam splicing grooves 202 are provided opposite to each other on the opposite side wall of the module beam 1011.

[0064] A plurality of first through channels 3 are provided, the first through channels 3 penetrate the side wall of the flat beam 101 along the splicing direction of the flat beam 101, and the plurality of first through channels 3 are connected to form a first steel cable channel, the first steel cable channel penetrates the two opposite side walls of the splicing beam 1;

[0065] Several first prestressed steel cables 4 pass through a first steel cable channel, and the two ends of the first prestressed steel cables 4 are respectively fixed to opposite sides of the splicing beam 1;

[0066] Here, the flat beams 101 are first spliced ​​along the height direction of the flat beams 101 to form a spliced ​​beam 1. The first prestressed steel cable 4 then passes through the first through-channel 3 of multiple flat beams 101 in sequence and is fixed to the two opposite side walls of the spliced ​​beam 1 for fastening, so that multiple flat beams 101 form a whole.

[0067] This setup enables modular splicing of the flat beam 101 along its height, allowing for rapid assembly into spliced ​​beams 1 with different cross-sectional specifications. Dynamic adjustment of the spliced ​​beams 1 according to actual project requirements enhances the adaptability of the combined flat beams and solves the problem of precast beams being unable to be quickly adjusted and assembled based on actual on-site measurements of beam width and height.

[0068] In this embodiment, please refer to Figure 2 and Figure 8 The composite flat beam also includes a second through channel 5 and a second prestressed steel cable 6;

[0069] The second through channel 5 completely penetrates both ends of the module beam 1011 along the length direction of the module beam 1011. The distance between the axis of the second through channel 5 and the axis of the first through channel 3 is greater than the sum of the radius of the first through channel 3 and the radius of the second through channel 5. The second through channels 5 of the module beams 1011 within the same flat beam 101 are connected in sequence to form the second steel cable channel.

[0070] The second prestressed steel cable 6 passes through the second steel cable channel. One end of the second prestressed steel cable 6 is fixed to the first end of the module beam 1011 spliced ​​along the length direction, and the other end of the second prestressed steel cable 6 is fixed to the last end of the module beam 1011.

[0071] Here, the second prestressed steel cable 6 passes through the second through channel 5 of the two module beams 1011 respectively, connecting the two module beams 1011 into an integral flat beam 101;

[0072] Here, adjusting the number of modular beams 1011 within the flat beam 101 can adjust the length of the flat beam 101, thereby adjusting the length of the splicing beam 1 and thus changing the length of the combined flat beam;

[0073] This design allows for flexible adjustment of the length of the flat beam 101. By splicing the modular beams 1011 along their length, flat beam 101 structures with different spans can be formed. This feature not only enhances the adaptability of the flat beam 101 to different span load-bearing requirements, but also shortens the length of the flat beam 101 through its detachable design, reducing space occupation during transportation, lowering the difficulty and cost of oversized transportation, and improving construction convenience.

[0074] Here, when the composite flat beam is connected to the precast column, the length direction of the composite flat beam must be perpendicular to the axis of the precast column, and the height direction of the composite flat beam must be parallel to the axis of the precast column. At this time, the second steel cable channel inside the composite flat beam is perpendicular to the axis of the precast column.

[0075] With this configuration, the second prestressed steel cable 6 is located inside the composite flat beam, and the second prestressed steel cable 6 can provide prestress in the vertical direction for the composite flat beam, reducing the bending deformation of the composite flat beam after bearing vertical loads; therefore, the second prestressed steel cable 6 can not only connect adjacent module beams 1011, but also provide prestress for the overall composite flat beam to prevent bending.

[0076] In this embodiment, please refer to Figure 2 and Figure 8 The splicing connection unit 2 further includes a module beam splicing protrusion 203 and a module beam splicing groove 204;

[0077] The contact surface between two adjacent module beams 1011 within the same flat beam 101 is the module beam splicing surface; the module beam splicing protrusion 203 and the module beam splicing groove 204 are provided at the module beam splicing surface, and the module beam splicing protrusion 203 is inserted into the module beam splicing groove 204 for splicing and positioning of the module beam 1011;

[0078] Here, the modular beam splicing protrusion 203 is integrally formed by the modular beam 1011 during the casting process using a mold;

[0079] Here, the modular beam splicing groove 204 is integrally formed when the modular beam 1011 is cast using a mold;

[0080] In this embodiment, one of the module beams 1011 in the flat beam 101 is provided with a module beam splicing protrusion 203 at one end face of the splicing surface, and the other module beam 1011 in the flat beam 101 is provided with a module beam splicing groove 204 at one end face of the splicing surface.

[0081] With this configuration, adjacent module beams 1011 can be quickly positioned during splicing via the module beam splicing protrusion 203 and the module beam splicing groove 204, eliminating the need for additional measurement and calibration procedures and improving the construction efficiency of assembling the module beams 1011. This interlocking mechanical locking structure restricts the relative displacement of the module beams 1011 in other directions, keeping the axes of adjacent module beams 1011 aligned and preventing tilted connections between them.

[0082] In this embodiment, please refer to Figure 1 and Figure 3 The first through channel 3 is arranged in multiple arrays along the length direction of the module beam 1011;

[0083] Here, in this embodiment, there are three first through channels 3 arrayed along the length direction. One of the first through channels 3 is located in the middle of the module beam 1011, and the other two are symmetrically arranged at both ends of the module beam 1011. The three first through channels 3 arrayed along the length direction of the module beam 1011 are the first group of first through channels 3.

[0084] Here, multiple first through channels 3 can also be arrayed along the width direction of module beam 1011;

[0085] Here, in this embodiment, a second set of first through channels 3 is also arrayed along the width direction of the module beam 1011;

[0086] This configuration increases the number of first through channels 3, thereby increasing the number of first prestressed steel cables 4. The multiple first prestressed steel cables 4 work together to enhance the connection strength between the flat beams 101. Furthermore, the multiple first prestressed steel cables 4 restrict the relative displacement between adjacent flat beams 101, thereby improving the overall stability of the structure between the composite flat beams.

[0087] In this embodiment, please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 10 The composite flat beam also includes a third through channel 7 and a third prestressed steel cable 8;

[0088] The flat beam 101 located in the middle of several flat beams 101 is the middle flat beam 102, the module beam 1011 within the middle flat beam 102 is the middle module beam 1021, and the contact surface of two adjacent middle module beams 1021 is the splicing surface of the middle module beam.

[0089] Here, the width and height dimensions of the intermediate flat beam 102 can be different from the width and height dimensions of the other flat beams 101;

[0090] Here, the two opposite sidewalls of the combined flat beam perpendicular to the height of the combined flat beam are the upper and lower end faces of the combined flat beam; when the width of the middle flat beam 102 is greater than the width of the two side flat beams 101, a positioning protrusion will be formed on the upper and lower end faces of the combined flat beam; when the width of the middle flat beam 102 is less than the width of the two side flat beams 101, a positioning groove will be formed on the upper and lower end faces of the combined flat beam.

[0091] Here, for reference Figure 10 The upper and lower end faces of the composite flat beam form positioning grooves. When the composite flat beam is assembled with the precast wall panel, the workers do not need to take additional measurements and lay out lines. They can directly insert the precast wall panel into the composite flat beam for positioning through the positioning grooves.

[0092] This configuration allows for the connection of flat beams 101 of different specifications. The positioning grooves or protrusions formed after the flat beams 101 of different specifications are connected enable workers to quickly position and install precast wall panels. This not only increases the flexibility of the combined flat beams but also saves construction time and further increases construction efficiency.

[0093] The third through channel 7 is located inside the intermediate module beam 1021. The axis of the third through channel 7 is parallel to the axis of the second through channel 5. The two first through channels 3 near the splicing surface of the intermediate module beam are the first passage and the second passage, respectively. The third through channel 7 passes through the splicing surface of the intermediate module beam, and one end of the third through channel 7 is connected to the first passage, and the other end of the third through channel 7 is connected to the second passage. The third through channel 7, the first passage, and the second passage form a first H-shaped passage.

[0094] The starting point of the first path and the starting point of the second path are respectively set on two opposite side walls of the splicing beam 1;

[0095] The passage from the starting point of the first path to the intersection of the first path and the third cable channel is the first vertical channel, and the passage from the starting point of the second path to the intersection of the second path and the third cable channel is the second vertical channel; the third prestressed cable 8 passes through the first vertical channel, the third through channel 7 and the second vertical channel in sequence to form a Z-shaped cable path, and the two ends of the third prestressed cable 8 are respectively fixed to the opposite side walls of the splicing beam 1;

[0096] This configuration, with its Z-shaped prestressed cable path, enables composite connections between the modular beams 1011 in both the height and length directions. Compared to traditional single-direction connection structures, this enhances the overall structural strength and stability of the composite flat beam.

[0097] Here, the passage from the end of the first path to the intersection of the first path and the third cable channel is the third vertical channel, and the passage from the end of the second path to the intersection of the second path and the third cable channel is the fourth vertical channel; the third prestressed cable 8 does not pass through the third vertical channel and the fourth vertical channel, so concrete can be poured into the third cable channel through the through hole at the end of the first path or the end of the second path, and the pouring status of the concrete can also be observed through the through hole at the end of the first path or the end of the second path;

[0098] With this setup, the through hole at the end of the passage not occupied by the third prestressed steel cable 8 is used as a concrete pouring port and monitoring port. This facilitates the pouring of concrete and the removal of air bubbles, and allows for direct observation of the pouring status through the end port, preventing concrete blockage or voids and ensuring the concrete filling effect at the joint of the spliced ​​beam 1.

[0099] In this embodiment, please refer to Figure 5 , Figure 6 and Figure 7 A second H-shaped channel is arrayed at the corresponding position below the first H-shaped channel;

[0100] There are two third prestressed steel cables 8. The first third prestressed steel cable 8 is located in the first H-shaped passage, and the second third prestressed steel cable 8 is located in the second H-shaped passage. The Z-shaped steel cable paths of the two third prestressed steel cables 8 are symmetrically arranged along the center of the intersection of the third through passage 7 and the splicing surface of the intermediate beam.

[0101] This arrangement allows the two third prestressed steel cables 8 to be mirrored, and the two mirrored third prestressed steel cables 8 are connected to different modular beams 1011 respectively. The Z-shaped steel cable paths of the two third prestressed steel cables 8 are combined to form a complete connection path of modular beams 1011, which increases the connection stability between modular beams 1011 within the spliced ​​beam 1 and makes the spliced ​​beam 1 more stable.

[0102] In this embodiment, the first cable channel, the second cable channel, and the third cable channel are all filled with concrete.

[0103] With this setup, after the first prestressed steel cable 4, the second prestressed steel cable 6, and the third prestressed steel cable 8 are anchored and fixed on the splicing beam 1 and the splicing beam 1 is tightened into a whole, concrete is poured into the first steel cable channel, the second steel cable channel, and the third steel cable channel. Because the first steel cable channel, the second steel cable channel, and the third steel cable channel pass through multiple module beams 1011 respectively, when the concrete solidifies, it will make the multiple module beams 1011 become a complete unit, thereby increasing the integrity of the composite flat beam and improving the connection strength of the composite flat beam.

[0104] In this embodiment, please refer to Figure 4 and Figure 7 The flat beam splicing protrusion 201 and the modular beam splicing protrusion 203 are conical; the flat beam splicing groove 202 and the modular beam splicing groove 204 are conical.

[0105] With this setting, the use of a tapered shape for the flat beam splicing protrusion 201 to be inserted into the flat beam splicing groove 202 and the module beam splicing protrusion 203 to be inserted into the module beam splicing groove 204 will result in a larger contact area and a more uniform stress distribution between the flat beam 101 or the module beam 1011.

[0106] With this design, the conical protrusions and conical grooves reduce the impact of installation errors, and the guiding effect of the conical slope can also improve the assembly efficiency between the module beam 1011 and the flat beam 101.

[0107] The specific usage of this embodiment is as follows:

[0108] After measuring the required length, width, and height parameters of the combined flat beams according to the actual needs of the project, the construction personnel first selected the corresponding number of modular beams 1011 according to the required length and positioned and spliced ​​them along the length direction of the modular beams 1011 through the modular beam splicing protrusions 203 and modular beam splicing grooves 204 to form the flat beam 101. Then, the second prestressed steel cable 6 was inserted to pass through the second through channel 5 of all the modular beams 1011 in the flat beam 101 and anchored to the two side walls of the flat beam 101. Following the above steps, the intermediate modular beams 1021 were used to splice the intermediate flat beam 102. Then, with the intermediate flat beam 102 as the center, the selected number of flat beams 101 were spliced ​​along the flat beam 101. 01. The flat beams 101 are spliced ​​together in the height direction through the flat beam splicing protrusions 201 and flat beam splicing grooves 202 on the side walls to form a spliced ​​beam 1. At the same time, the third prestressed steel cable 8 is used to pass through the two opposite side walls of the spliced ​​beam 1 in a Z-shaped steel cable path and is fixed to the two opposite side walls of the spliced ​​beam 1. Then, the workers insert the first prestressed steel cable 4 along the height direction of the flat beam 101, so that the first prestressed steel cable 4 passes through the first through channel 3 of each flat beam 101 and is fixed to the two opposite side walls of the spliced ​​beam 1. Subsequently, the workers pour concrete into the first steel cable channel, the second steel cable channel and the third steel cable channel. Finally, after the concrete is formed, a composite flat beam that meets the required size requirements is formed.

[0109] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A splicable composite flat beam, characterized in that, The composite flat beam includes: A spliced ​​beam, comprising several flat beams, wherein the spliced ​​beam is formed by splicing several flat beams along the height direction of the flat beams; The splicing connection unit includes several flat beam splicing protrusions and several flat beam splicing grooves; the flat beam splicing protrusions and flat beam splicing grooves are arranged on two opposite side walls of the flat beam along the splicing direction of the flat beam, and the flat beam splicing protrusions and flat beam splicing grooves of two adjacent flat beams cooperate with each other. Several first through channels, the first through channels penetrate the side wall of the flat beam along the splicing direction of the flat beam, the several first through channels are connected to form a first steel cable channel, the first steel cable channel penetrates the two opposite side walls of the spliced ​​beam; Several first prestressed steel cables pass through a first steel cable channel, and the two ends of the first prestressed steel cables are respectively fixed to opposite sides of the splicing beam.

2. The splicable composite flat beam according to claim 1, characterized in that, The flat beam includes a modular beam; Several modular beams are spliced ​​together along the length of the modular beams to form a flat beam. The flat beam splicing protrusions and flat beam splicing grooves are respectively provided on two opposite side walls of the modular beam along the splicing direction of the flat beam; the first through channel passes through the opposite side walls of the modular beam along the splicing direction of the flat beam. The composite flat beam also includes a second through channel and a second prestressed steel cable; The second through channel completely penetrates both ends of the module beam along its length. The distance between the axis of the second through channel and the axis of the first through channel is greater than the sum of the radius of the first through channel and the radius of the second through channel. The second through channels of the module beams within the same flat beam are connected sequentially to form the second cable channel. The second prestressed steel cable passes through the second steel cable channel. One end of the second prestressed steel cable is fixed to the first module beam spliced ​​along the length direction, and the other end of the second prestressed steel cable is fixed to the last module beam.

3. A splicable composite flat beam according to claim 2, characterized in that, The splicing connection unit also includes module beam splicing protrusions and module beam splicing grooves; The contact surface between two adjacent modular beams within the same flat beam is the modular beam splicing surface; the modular beam splicing protrusion and the modular beam splicing groove are provided at the modular beam splicing surface, and the modular beam splicing protrusion is inserted into the modular beam splicing groove for splicing and positioning of the modular beam.

4. A splicable composite flat beam according to claim 2, characterized in that, Multiple first through channels are arranged in an array along the length of the module beam.

5. A splicable composite flat beam according to claim 2, characterized in that, The composite flat beam also includes a third through channel and a third prestressed steel cable; The number of flat beams is 2n+1, and n is greater than or equal to 1; The flat beam located in the middle of several flat beams is called the middle flat beam, the module beam within the middle flat beam is called the middle module beam, and the contact surface between two adjacent middle module beams is called the splicing surface of the middle module beam. The third through channel is located inside the intermediate module beam. The axis of the third through channel is parallel to the axis of the second through channel. The two first through channels near the splicing surface of the intermediate module beam are the first passage and the second passage, respectively. The third through channel passes through the splicing surface of the intermediate module beam, and one end of the third through channel is connected to the first passage, and the other end of the third through channel is connected to the second passage. The third through channel, the first passage, and the second passage form a first H-shaped passage. The starting points of the first path and the second path are respectively set on two opposite side walls of the splicing beam; The passage from the starting point of the first path to the intersection of the first path and the third cable channel is the first vertical channel, and the passage from the starting point of the second path to the intersection of the second path and the third cable channel is the second vertical channel; the third prestressed cable passes through the first vertical channel, the third through channel and the second vertical channel in sequence to form a Z-shaped cable path, and the two ends of the third prestressed cable are respectively fixed on the opposite side walls of the splicing beam.

6. A splicable composite flat beam according to claim 5, characterized in that, A second H-shaped path is arrayed at the corresponding position below the first H-shaped path; There are two third prestressed steel cables. The first third prestressed steel cable is located in the first H-shaped passage, and the second third prestressed steel cable is located in the second H-shaped passage. The Z-shaped cable paths of the two third prestressed steel cables are symmetrically arranged along the center of the intersection of the third through passage and the splicing surface of the intermediate beam.

7. A splicable composite flat beam according to claim 5, characterized in that, The first, second, and third cable channels are all filled with concrete.

8. A splicable composite flat beam according to claim 1, characterized in that, The flat beam splicing protrusion and the modular beam splicing protrusion are conical; The flat beam splicing groove and the modular beam splicing groove are conical.

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