Replaceable m-shaped composite beam with new mortise and tenon connection node and construction method thereof

Abstract

The application discloses a replaceable M-shaped composite beam with a new type of mortise and tenon connection node and a construction method thereof, which comprises a stand column, an M-shaped beam and a shear connector, the shear connector is arranged on the stand column, the M-shaped beam is provided with shear connector placing grooves on both sides for accommodating the shear connector, so that the M-shaped beam and the shear connector can be detachably inserted, a concrete pouring groove for filling concrete is arranged in the middle of the M-shaped beam, the M-shaped beam is composed of one or more M-shaped beam modules, and the M-shaped beam modules are detachably connected through first M-shaped beam connectors and second M-shaped beam connectors. The application has the advantages of reducing the difficulty of node connection, reducing the difficulty of maintenance, reducing the cost and time of composite beam maintenance and erection, improving the stability of the node, recycling the components, being low-carbon and environment-friendly and the like, and has the modularization property.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building construction, and particularly relates to a replaceable M-shaped composite beam with a novel mortise and tenon connection node and a construction method thereof. BACKGROUND

[0002] With the development of industry, green environmental protection has gradually become the theme of future construction and building, and many construction projects are more inclined to the prefabricated component construction scheme with lower rotation cost, more green environmental protection, and more time and labor saving during construction when selecting a scheme.

[0003] However, the traditional composite beam does not consider the maintenance and repair problems during construction and after construction. Once the components crack or loosen during assembly or after assembly, large-scale demolition and reconstruction are required, small-scale maintenance and repair are difficult to perform, the engineering cost is increased, the construction progress is delayed, and the stress performance is decreased to a certain extent due to the loss of part of the integrity of the structure after disassembly. At the same time, because the damaged components cannot be recycled, a large amount of resources will be wasted. The application of replaceable beams can better improve such situations. Construction personnel can disassemble, replace and recycle damaged components, greatly reducing the maintenance engineering quantity and engineering waste while not affecting the overall strength. Therefore, a new type of composite beam with a stable and reliable connection node, convenient disassembly and installation, convenient recycling and replacement, and components with good stress performance has good development and application prospects.

[0004] However, most of the connection nodes today are simply assembled using traditional connection methods such as welding, bolt fixing, and concrete integral pouring. Although such traditional connection nodes can meet the connection needs of prefabricated buildings, they also have many disadvantages, such as: (1) the stability of the traditional connection node is not high, and the nut is prone to looseness over time, thereby losing the strength of the node and posing a safety hazard. (2) The experience requirement of welding for skilled workers is relatively high, and problems such as disconnection, cracking, and uneven welding are prone to occur. (3) Welding process emits a large amount of harmful gases, which is not conducive to the safety of construction personnel and environmental protection. (4) The connection nodes such as welding and concrete integral pouring have irreversible characteristics, and it is difficult to quickly repair the components once they have problems. SUMMARY

[0005] The technical problem solved by the present application is to provide a replaceable M-shaped composite beam with a novel mortise and tenon connection node and a construction method thereof, which can reduce the difficulty of node connection, reduce the difficulty of maintenance, reduce the cost and time of composite beam maintenance and erection, improve the stability of the node, the components are recyclable, low-carbon and environmentally friendly, and the like, while ensuring good stress performance of the prefabricated composite beam structure.

[0006] Technical solution: In order to solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0007] A replaceable M-shaped composite beam with a new mortise and tenon joint node, comprising a stand, an M-shaped beam and a shear connector, the shear connector is arranged on the stand, the M-shaped beam is provided with a shear connector placing groove capable of accommodating the connector on both sides to realize the detachable plug-in connection of the M-shaped beam and the shear connector, and a concrete pouring groove for filling concrete is arranged in the middle of the M-shaped beam.

[0008] Further, the M-shaped beam is an integral structure M-shaped beam, and the two ends of the M-shaped beam are connected with the stand through the shear connectors respectively.

[0009] Further, the M-shaped beam is an M-shaped beam composed of a plurality of M-shaped beam modules, and two M-shaped beam modules are detachably connected through the first M-shaped beam connector and the second M-shaped beam connector.

[0010] Further, the second M-shaped beam connector is inserted into the shear connector placing groove to connect two M-shaped beam modules from the inside, and the first M-shaped beam connector connects two M-shaped beam modules and the second M-shaped beam connector from the outside.

[0011] Further, a bending-resistant fixing member is arranged above the M-shaped beam.

[0012] Further, a deformation-resistant member is arranged below the M-shaped beam.

[0013] Further, a support rod supporting the M-shaped beam is arranged on the stand.

[0014] Further, the stand is a hollow structure, and a stud, a steel hoop and a fixing rib are arranged in the stand, and the shear connector passes through the stand and is connected with the stud.

[0015] The application also discloses a construction method of a replaceable M-shaped composite beam with a new mortise and tenon joint node, comprising the following steps:

[0016] Step one: analyze the engineering requirements, count the number of required beams, make structural parts, and reserve corresponding mounting holes;

[0017] Step two: erect the stand and install the required structural parts in the stand;

[0018] Step three: install the required connectors for fixing the M-shaped beam into the mounting holes of the stand;

[0019] Step four: connect the required connectors for fixing the M-shaped beam with the structural parts in the stand;

[0020] Step five: align and splice the shear connector placing groove of the M-shaped beam with the shear connector;

[0021] Step six: erect the hoop, make the hoop fully contact with the column; and erect the support rod, connect one end of the support rod with the hoop, and splice the other end with the shear connector;

[0022] Step seven: install the anti-deformation member and the anti-bending fixing member near the shear connector;

[0023] Step eight: install the anti-deformation member in the middle of the M-shaped beam;

[0024] Step nine: place the cross beam connector in the concrete pouring groove of the M-shaped beam;

[0025] Step ten: pour concrete into the concrete pouring groove, and after the concrete solidifies, place the cross beam into the cross beam connector and connect it through bolts.

[0026] Advantages: compared with the prior art, the present application has the following advantages:

[0027] (1) Compared with the traditional beam structure, the present application uses the shear connector placement groove of the M-shaped beam to form the mortise and tenon structure in the mortise and tenon structure, and the M-shaped beam component can be replaced and recycled by disassembling the shear bolt while ensuring good stress performance.

[0028] (2) The present application has simple and effective structure, is easy to erect, has low assembly difficulty and worker skill requirement, and is not easy to cause component damage caused by installation errors. At the same time, the component has a square shape, is convenient for device movement, is not easy to produce sliding displacement after loading, is suitable for transportation in various ways, reduces transportation cost, saves engineering construction and maintenance time. It is helpful to reduce engineering erection and maintenance cost and realize building modernization (prefabrication, assembly type).

[0029] (3) Compared with the traditional maintenance method, the use of the replaceable M-shaped beam of the present application simplifies the maintenance process. When the M-shaped beam or component is damaged, the damaged component is disassembled and recycled, the new M-shaped beam and shear connector and other components are spliced, and the concrete is poured again to complete the maintenance work. The process is the same as when installing, so the performance of the related stress nodes such as the shear bolt installation point is also roughly the same as when installing. Therefore, the maintenance cost and performance loss caused by maintenance are reduced, the maintenance difficulty and maintenance time are reduced, and the construction waste and pollution caused by maintenance are reduced.

[0030] (4) The main components of the present application, such as the M-shaped beam and the anti-deformation member, are mostly geometric structures, which have obvious geometric structures and edges and corners, and are convenient for mold making, glue coating, fiber wrapping, demolding and other processes. Therefore, new materials such as carbon fiber, glass fiber steel and other fibers can be used for component manufacturing, further reducing the self-weight of the component, improving the stress performance of the component, and improving the heat resistance and corrosion resistance of the component.

[0031] (5) The connecting node stability connecting mode of the present application is connected by using reversible structure, and the movement of the nut is limited by using concrete pouring and nut structure, so that the stability of the node is enhanced while the reversibility of the node is reserved.

[0032] (6) The present application has expandability, and the number and length of the beams and cross beams can be increased according to construction requirements, so as to meet various needs of different projects.

[0033] (7) The present application has modularization attribute, and the components are units that can be combined, decomposed and replaced, and the components are independent of each other but closely connected. After the components are damaged, part of the components can be replaced and recycled according to the damage degree, so as to further reduce the maintenance cost and reduce construction waste and pollution.

[0034] (8) The present application is a prefabricated building component, and is more suitable for large-scale flow manufacturing to reduce manufacturing cost. At the same time, through professional equipment and facilities, the influence of dust and noise on the environment can be greatly reduced, so as to reduce the influence of construction and maintenance on the society. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic view of the internal structure of the present application.

[0036] Figure 2 is an exploded view of the present application.

[0037] Figure 3 is a sectional view of the first M-shaped beam connecting piece and the M-shaped beam after connection of the present application.

[0038] Figure 4 is an exploded view of the two M-shaped beam combination structures of the present application.

[0039] Figure 5 is a schematic view of the locking rod structure of the present application.

[0040] Figure 6 is a schematic view of the shear connector structure of the present application.

[0041] Figure 7 is a schematic view of the shear connector structure of the present application.

[0042] Figure 8 is a schematic view of the steel hoop structure of the present application.

[0043] Figure 9 is a sectional view of the two M-shaped beam combination structures after connection of the present application.

[0044] Figure 10 is a schematic view of the corner fixing piece structure of the present application.

[0045] Figure 11is a structural schematic diagram of a steel hoop fixing member of the present application.

[0046] Figure 12 is a schematic diagram of an upper connection structure of a connecting rod of the present application.

[0047] Figure 13 is a double-layer hexagonal nut and a matching hexagonal structure of the present application. DETAILED DESCRIPTION

[0048] The present application will be further illustrated below in combination with specific embodiments, which are implemented on the premise of the technical solutions of the present application, and should be understood that the embodiments are only used for illustrating the present application and not for limiting the scope of the present application.

[0049] As shown in Figure 1 the replaceable M-shaped composite beam with a new mortise and tenon joint node of the present application comprises a shear connector 1, a bending-resistant fixing member 2, a stand column 3, an M-shaped beam 4, a bending-resistant hanging plate 5, a first M-shaped beam connector 6, a second M-shaped beam connector 7, a steel hoop 8, a vertical bar 9, a ring hoop 10, an angle fixing member 11, a support rod 12, a cross beam 13, a first fixing member 14, a second fixing member 15, a deformation-resistant member 17, a fixing bar 18, a steel hoop fixing member 19, and a cross beam connector 20. The M-shaped beam 4 is connected with the stand column through the shear connector 1, and the M-shaped beam 4 is a modular structure, and multiple M-shaped beams 4 can be connected to form an M-shaped beam with a required length through the first M-shaped beam connector 6 and the second M-shaped beam connector 7.

[0050] The stand column 3 is a support member of the composite beam, and the stand column 3 is a hollow structure so as to place and install the vertical bar 9, the angle fixing member 11, the ring hoop 10, the steel hoop 8, and the fixing bar 18. The stand column 3, the steel hoop 8, and the ring hoop 10 are matching structures, which adopt a matching polygonal structure. In the specific construction process, the number of sides of the above components can be increased, and thus the number of beams can be increased to meet different needs of different projects.

[0051] The vertical bar 9, the fixing bar 18, the steel hoop 8, and the steel hoop fixing member 19 are all arranged inside the stand column 3. Specifically, the vertical bar 9 is arranged vertically inside the stand column 3, and multiple vertical bars 9 are connected and fixed through the steel hoop 8. The vertical bar 9 is a shear-resistant steel bar with threads, which should have a shear-resistant capacity of a certain strength, and the diameter thereof should not be less than 12 mm.

[0052] Through the connection of the fixed rib 18 and the steel hoop 8, the internal frame structure is provided and stabilized, so that the stud 9 and the steel hoop 8, the shear connector 1, the first fixing member 14 and the second fixing member 15 are connected by screwing through torsion. The column 3 should be provided with reserved openings for the shear connector 1, the first fixing member 14 and the second fixing member 15 to pass through and be connected with the stud 9, and each column of reserved openings should be located on the same vertical line, and each row of reserved openings should be two horizontal reserved openings, and the distance between the two holes should be equal to the distance between the two studs 9, so that the fixing member can be accurately screwed with the stud 9.

[0053] The tail end of the first fixing member 14, the second fixing member 15 and the shear connector 1 is provided with a tail rod structure with a diameter similar to that of the reserved opening of the column 3, which is a threaded tail rod structure a provided with a longitudinal internal thread opening b, and the diameter and position of the internal thread opening b should match the stud 9, and the two threads can be screwed.

[0054] After the column 3, the first fixing member 14, the second fixing member 15 and the shear connector 1 are assembled, the column 3 can be poured with concrete to further improve the stress performance and improve the stability of the node. The reserved opening of the column 3 and the tail rod structure a of the first fixing member 14, the second fixing member 15 and the shear connector 1 can be provided with matching thread structures to further improve the stress performance of the node.

[0055] The steel hoop 8 is an integral ring, and the corners thereof are provided with threaded stud mounting holes 82, and each side is provided with a fixed rib mounting hole 81 without thread. The inner diameter of the fixed rib mounting hole 81 should be larger than that of the fixed rib 18, so that the fixed rib 18 can pass through the fixed rib mounting hole 81. The internal thread of the stud mounting hole 82 should match the thread of the stud 9 and be screwed with each other. The number of steel hoops 8 provided in the column 3 should not be less than 4, and the fixed rib mounting hole 81 and the stud mounting hole 82 should be accurately matched.

[0056] As shown in Figure 11 The fixed rib 18 needs to be provided with a transverse through hole 181 with thread, and the steel hoop fixing member 19 is connected with the fixed rib 18 through the through hole. The steel hoop fixing member 19 has a through hole in the middle, and the diameter of the hole should be slightly larger than that of the fixed rib 18. The upper part of the steel hoop fixing member 19 generally presents a trapezoidal structure with the upper part being wide and the lower part being narrow, and the concave shape of the upper surface should match the surface shape of the steel hoop 8 to support and stabilize the steel hoop 8. While the lower half of the steel hoop fixing member 19 generally presents a cylindrical shape, and is provided with a fixed rib fixing hole 191 penetrating through the fixed rib 18, so as to be connected with the fixed rib 18 through the shear bolt. After the fixed rib 18 passes through the fixed rib mounting hole 81 of the steel hoop 8, the steel hoop fixing member 19 limits the steel hoop 8 at the required height position, so as to facilitate the connection of the stud 9 later.

[0057] The hoop 10 is a half split structure, with upper and lower bottom surfaces wider than the hoop body, and the upper and lower bottom surfaces are respectively provided with a hoop first structure 103, and the middle of the hoop body is provided with a hoop second structure 102. The hoop first structure 103 should be symmetrically arranged in two groups along the column 3, and is a telescopic structure, which is a through structure like a sleeve, one side of which is a hexagonal sleeve, and the other side is a circular sleeve. By putting a hexagonal nut into the hexagonal sleeve and a screw into the circular sleeve, the telescopic structure of the hoop first structure 103 and the constraint of the hoop to the column 3 are realized by rotating the screw. The non-extendable side length should be approximately equal to the corresponding side length of the column 3, and the contact area, constraint force, corrosion resistance and friction can be further increased by filling rubber and other materials. Relative to the column 3 and the hoop 10, the surface provided with the M-shaped beam should be provided with the hoop second structure 102. Two second fixing members 15 should be arranged below the hoop 10 to reinforce and improve the stress performance.

[0058] As shown in Figure 3 , the M-shaped beam 4 should be provided with two shear connector placing grooves 43 and one concrete pouring groove 44, and the overall shape is M-shaped. The M-shaped beam 4 is provided with a first bolt mounting hole 42 penetrating through the shear connector placing groove 43 and the concrete pouring groove 44. The M-shaped beam 4 should also be provided with a second bolt mounting hole 41 penetrating through only the shear connector placing groove 43. Because the middle position of the M-shaped beam deforms after loading and the internal force is small, the second bolt mounting hole 41 should be arranged at the midspan position of the M-shaped beam 4 to reduce the loss of stress performance caused by the opening of the M-shaped beam 4.

[0059] As shown in Figure 1 , 6 , 7, the cross section of the shear connector 1 is T-shaped, and the rear side has a threaded rod structure a, and the rod structure a has a through stud hole b. The inner diameter of the stud hole b should match the diameter of the stud 9. The shear connector 1 is provided with a third bolt mounting hole 1.2. The width of the horizontal rod 1.1 of the shear connector 1 should be the same as the width of the shear connector placing groove 43 of the M-shaped beam 4.

[0060] The first bolt mounting hole 42, the second bolt mounting hole 41 and the third bolt mounting hole 1.2 are all elliptical, which enhances the constraint force of the M-shaped beam 4 and the shear connector 1 to the bolt, and facilitates the positioning of the bolt. Among them, the size of the nut selected for the first bolt mounting hole 42 and the third bolt mounting hole 1.2 should be larger than the major axis size of the elliptical mounting hole to prevent concrete from being exposed. The height of the first bolt mounting hole 42 and the third bolt mounting hole 1.2 should be the same to prevent the bolt from being unable to be installed.

[0061] Preferably, a filler can be added between the shear connector and the M-shaped beam to cushion, reduce friction, improve overall stability and stress performance.

[0062] As shown inFigure 2 and 6 As shown in the drawings, the support rod 12 supporting the M-shaped beam 4 is provided on the column 3, and the support rod 12 is an integral structure, the upper part of which is a U-shaped interface 121, the middle width of the U-shaped interface 121 should be the same as the thickness of the longitudinal rod 1.3 of the shear connector 1, and the sixth bolt mounting hole 122 should be the same size as the third bolt mounting hole 1.2. The support rod rod 123 should have an angle of 45°-60° with the vertical. The bottom end 124 of the support rod has a circular and ladder-shaped force connection point, and the support rod 12 should have a certain bending and shear strength and thickness.

[0063] As shown in the drawings, Figure 2 The anti-deformation member 17 is provided below the M-shaped beam 4, and the anti-deformation member 17 is a semi-enclosed member provided with symmetric fourth bolt mounting holes 171, and the height of the hole distance from the inner bottom surface should be equal to the height of the first bolt mounting hole 42 and the second bolt mounting hole 41 from the bottom surface of the M-shaped beam 4. The anti-deformation member 17 should be arranged as much as possible at the midspan position of the M-shaped beam 4 to provide restraint force for the M-shaped beam 4, hinder the expansion deformation of the M-shaped beam 4, and improve the carrying capacity.

[0064] The fourth bolt mounting hole 171 of the anti-deformation member 17 can be selected as a hexagonal structure, and the corresponding double-layer hexagonal nut also needs to be used.

[0065] As shown in the drawings, Figure 2 The anti-bending fixing member 2 is a semi-enclosed structure, and the width thereof should be the same as that of the M-shaped beam 4. Four anti-bending connection points 21 are provided, and the M-shaped beam 4 is connected through bolts.

[0066] As shown in the drawings, Figure 10 The corner fixing member 11 has a corner fixing structure 111 and a tenth bolt mounting hole 112, and the tenth bolt mounting hole 112 is connected with the column 3 through a shear bolt. The corner fixing structure 111 should be installed close to the M-shaped beam 4 and the column 3, and the screw hole is punched on the column 3 through this position. The corner fixing structure 111 should have a certain thickness.

[0067] In order to adapt to the length requirements of the M-shaped beam in different projects, the M-shaped beam 4 can be a M-shaped beam composed of multiple M-shaped beam 4 modules, and the two M-shaped beam modules are connected through the first M-shaped beam connector 6 and the second M-shaped beam connector 7. The second M-shaped beam connector 7 is inserted into the shear connector placement slot 43, and the two M-shaped beam 4 modules are connected from the inside. The first M-shaped beam connector 6 connects the two M-shaped beam 4 modules and the second M-shaped beam connector 7 from the outside.

[0068] As shown in the drawings, Figure 4 and 5As shown, the first M-shaped beam connector 6 includes an upper half connector 61, a lower half connector 62, a locking rod 63, a locking buckle 64, a baffle 65, an eleventh bolt mounting hole 66, and a baffle mounting hole 67. The inner width of the upper half connector 61 and the lower half connector 62 should be the same as that of the M-shaped beam 4, and the diameter of the locking rod 63 should be the same as that of the limiting hole 651 and the fixing hole 652. The locking buckle 64 has two mounting holes 641 with the same diameter as the locking rod 63, and the locking rod 63 and the locking buckle 64 have a first screw hole 631 and a second screw hole 632 fixed by a screw. The baffle 65 has a limiting hole 651, a fixing hole 652, a force receiving end 653, and a baffle piece 654. The force receiving end 653 is a triangular structure, which increases the contact area and the force receiving area. The width of the force receiving end 653 should be smaller than that of the concrete pouring groove 44 of the M-shaped beam 4. Before installation, the baffle 65 is limited by the locking rod 63, the locking buckle 64, and the limiting hole 651, which facilitates the installation of the first M-shaped beam connector 6 and avoids damage caused by shaking and displacement of the baffle 65 during movement. The T-shaped connection slot 611 of the upper half connector 61 is spliced with the T-shaped connector 621 of the lower half connector 62. The lower half connector 62 has a through screw hole 622, and the T-shaped connection slot 611 of the upper half connector 61 has a corresponding threaded interface for screw connection, limiting the position. The T-shaped connection slot 611 is not a through structure, and one end should be a closed structure. Before and during installation, the T-shaped connector 621 is inserted into the limiting hole 651 to prevent the baffle 65 from shaking or being damaged by collision with the M-shaped beam 4. The installation position of the eleventh bolt mounting hole 66 should be the position corresponding to the first bolt mounting hole 42 after the upper half connector 61 is installed on the M-shaped beam 4. The opening area of the baffle mounting hole 67 should be greater than the cross-sectional area of the baffle piece 654 of the baffle 65 and less than the cross-sectional area of the force receiving end 653, ensuring that the baffle 65 can be removed while avoiding sliding out from the force receiving end in the opposite direction, facilitating full force receiving and replacing the M-shaped beam 4, the first M-shaped beam connector 6, and related components in the first M-shaped beam connector 6.

[0069] The second M-shaped beam connector 7 is a type of I-beam, and its width and height should be the same as those of the shear connector placement groove 43 of the M-shaped beam 4. The middle part has a fifth bolt mounting hole 71, and the opening position should correspond to the first bolt mounting hole 42.

[0070] The M-shaped beam 4 module combination extension method includes the following steps:

[0071] Step one: Put the second M-shaped beam connector 7 into the middle of the two M-shaped beams 4.

[0072] Step two: Insert the upper half connector 61 into the joint.

[0073] Step three: Fix it by passing a bolt through the eleventh bolt mounting hole 66, the fifth bolt mounting hole 71, and the first bolt mounting hole 42.

[0074] Step four: pull out the locking rod 63 from the limiting hole 651, put the baffle 65 into the concrete pouring groove 44 of the M-shaped beam 4, and then insert the locking rod 63 into the fixing hole 652, and fix the locking rod 63 with the locking buckle 64.

[0075] Step five: install the bending-resistant hanging plate 5 and the deformation-resistant part 17, and fix them with shear bolts.

[0076] Step six: install the lower half connecting part 62, and connect it with the threaded hole in the T-shaped connecting groove 611 through the screw hole 622 with a screw.

[0077] Suppose the left half M-shaped beam of the extended M-shaped composite beam is damaged, the present application provides a disassembly method for the extended M-shaped composite beam and a replacement method for the extended M-shaped composite beam. The disassembly method for the extended M-shaped composite beam is as follows:

[0078] Step one: remove the bolt installed in the eleventh bolt installation hole 66 of the first M-shaped beam connecting part 6, and take out the limiting screw in the screw hole 622 of the lower half connecting part 62.

[0079] Step two: move the lower half connecting part 62 horizontally to separate it from the upper half connecting part 61, and remove the second M-shaped beam connecting part 7.

[0080] Step three: remove the limiting screw in the first screw hole 631, separate the locking rod 63 from the locking buckle 64, and pull out the locking rod 63 from the baffle 65.

[0081] Step four: vertically remove the upper half connecting part 61, and then separate the left half M-shaped composite beam (the one poured with concrete is a composite beam, and the one not poured with concrete is a beam).

[0082] The replacement method for the extended M-shaped composite beam is as follows:

[0083] Step one: prepare two new baffles 65 to pass through the baffle installation hole 67 on the upper half connecting part 61, and use the locking rod 63 to pass through the limiting hole 651.

[0084] Step two: install the new left half M-shaped beam.

[0085] Step two: put the new upper half connecting part 61 into the joint, and install the baffle installation hole 67 in alignment with the baffle 65 in the right half M-shaped composite beam.

[0086] The subsequent steps refer to the M-shaped beam 4 module combination extension method.

[0087] The anti-bending hanging plate 5 is in inverted U-shaped structure, two through seventh bolt connecting holes 51 are arranged on the two protruding sides of the anti-bending hanging plate 5. The anti-bending hanging plate 5 is connected with the M-shaped beam 4 and other components through flexible wires 52, such as nylon ropes, steel ropes and the like. One end of the flexible wire 52 is a UNI-LOC double-end bolt, and the other end is a closed pressing clevis. The UNI-LOC double-end bolt is threadedly connected with the seventh bolt connecting hole 51, and the other end closed pressing clevis is connected through the extrusion of the shear bolt. After the extension construction of the M-shaped beam 4 is completed, when the M-shaped beam 4 is bent and deformed under the pressure, the load is concentrated on the middle part of the second M-shaped beam connecting piece 7, and the too concentrated stress can cause the second M-shaped beam connecting piece 7 to be more easily damaged. The use of the anti-bending hanging plate 5 can exert force on the M-shaped beam 4, and then utilize the reaction force to disperse the force to the two ends of the second M-shaped beam connecting piece 7, thereby prolonging the service life of the second M-shaped beam connecting piece 7 and improving the stress performance of the M-shaped beam 4.

[0088] As shown in Figure 12 , the cross beam 13 needs to be provided with an eighth bolt mounting hole 131, which should be reserved when the cross beam 13 is prepared by pouring. The cross beam 13 can be made of fiber concrete to reduce the self weight, or new type concrete to reduce emission.

[0089] The upper half of the cross beam connecting piece 20 is in U-shaped structure and is provided with a ninth bolt mounting hole 201. The inner width thereof should be the same as that of the cross beam 13, and the ninth bolt mounting hole 201 should be matched with the eighth bolt mounting hole 131 of the cross beam 13 in position. The lower stable stress end 202 is in ladder-shaped structure, and the thickness thereof should be smaller than the width of the concrete pouring groove 44 of the M-shaped beam 4. Preferably, since all the above components adopt basic geometric structure and shape, they can be made of traditional steel materials or new type materials such as glass fiber steel.

[0090] After the assembly is completed, the concrete pouring groove 44 of the M-shaped beam 4 should be filled with concrete to improve the stress performance of the beam, constrain the nut and improve the stability of the node. Alternatively, after the assembly is completed, a steel bar truss or a steel bar cage and other tension structures are placed in the concrete pouring groove 44 to further improve the stress performance of the M-shaped beam 4. The concrete poured can be new type concrete materials such as steel fiber concrete and environment-friendly concrete to reduce the self weight of the beam, improve the stress performance and reduce emission.

[0091] As shown in Figure 12 , the fourth bolt mounting hole 171 of the anti-deformation piece 17 can be hexagonal structure d, and the nut matched therewith also needs to be double-layer hexagonal nut c.

[0092] The application further discloses a construction method for erecting the replaceable M-shaped composite beam with the new type mortise and tenon joint node and a replacement method of the M-shaped composite beam.

[0093] Construction method, comprising the following steps:

[0094] Step one: analysis of engineering needs, statistics required beam quantity, column 3, hoop 8, hoop 10 and other components of the production, and the corresponding installation hole.

[0095] Step two: erecting column 3, the required structure in the column 3 is installed in the column;

[0096] From the bottom to the top of the fixed muscle 18 transverse through hole 181 installation of steel hoop fixing 19, and then the steel hoop 8 vertical muscle installation hole 82 and fixed muscle 18 alignment installation, through the steel hoop fixing 19 stable steel hoop 8, the combined components into the column 3.

[0097] Step three: the fixed M type beam required connecting piece is installed into the installation hole of the column 3;

[0098] Specifically, the shear connector 1, the corner fixing structure 111 of the corner fixing member 11, the first fixing member 14 and the second fixing member 15 are installed into the installation hole of the column 3.

[0099] Step four: connecting the connecting piece required for fixing the M type beam with the structural member in the column 3;

[0100] The vertical muscle 9 is respectively turned into the inner threaded opening b of the shear connector 1, the corner fixing structure 111 of the corner fixing member 11, the first fixing member 14 and the second fixing member 15 and the vertical muscle installation hole 82 of the steel hoop.

[0101] Step five: the shear connector of the M-shaped beam 4 is placed in the slot 43 and connected with the shear connector 1.

[0102] Step six: erecting the hoop 10, making the hoop 10 fully contact with the column 3; and erecting the support rod, connecting one end of the support rod with the hoop and connecting the other end with the shear connector.

[0103] Specifically, the hoop 10 is erected and tightened, so that the hoop 10 fully contacts with the column 3. The support rod 12 is erected, the support rod bottom end 124 of the support rod 12 is fixed with the second structure 102 of the hoop by bolts, and the U-shaped interface 121 is connected with the shear connector 1.

[0104] The hoop 10 and the column 3 are constrained by tightening the screw, and rubber or other materials can be used as intermediate medium to further increase the contact area, increase the constraint force, and increase the corrosion resistance and friction force, so that the two fully contact.

[0105] Step seven: installing the anti-deformation member 17 and the anti-bending fixing member 2 near the shear connector 1 and fixing them with shear bolts.

[0106] Step eight: installing the anti-deformation member 17 in the middle of the M-shaped beam 4.

[0107] Step nine: put the force end 202 of the cross beam connecting member 20 into the concrete pouring groove 44 of the M-shaped beam 4.

[0108] Step ten: pour concrete into the concrete pouring groove 44, and after the concrete solidifies, put the cross beam 13 into the cross beam connecting member 20 and connect through the shear bolt.

[0109] The replacement method of the M-shaped composite beam comprises the following steps:

[0110] Step one: dismount the cross beam 13.

[0111] Step two: dismount the corner fixing structure 111 of the corner fixing member 11.

[0112] Step three: dismount the bolt on the M-shaped beam 4, and remove the anti-deformation member 17, the anti-bending fixing member 2 and other components.

[0113] Step four: dismount the M-shaped beam 4.

[0114] Step five: install a new M-shaped beam 4 according to the above construction method.

[0115] The above is only the preferred embodiment of the present application, and it should be noted that for those skilled in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A replaceable M-shaped composite beam with a new mortise and tenon connection node, characterized in that: It comprises a column (3), an M-shaped beam (4) and a shear connector (1), the shear connector (1) is arranged on the column (3), the M-shaped beam (4) is provided with a shear connector placing groove (43) on both sides to accommodate the shear connector, so that the M-shaped beam (4) and the shear connector (1) can be detachably connected, and a concrete pouring groove (44) for filling concrete is arranged in the middle of the M-shaped beam (4); The M-shaped beam (4) is composed of a plurality of M-shaped beam modules, and two M-shaped beam modules are detachably connected through a first M-shaped beam connector (6) and a second M-shaped beam connector (7); the second M-shaped beam connector (7) is inserted into the shear connector placing groove (43) to connect the two M-shaped beam modules from the inside, and the first M-shaped beam connector (6) connects the two M-shaped beam modules and the second M-shaped beam connector (7) from the outside. The first M-shaped beam connector (6) comprises an upper half connector (61), a lower half connector (62), a locking rod (63), a locking buckle (64), a baffle (65), an eleventh bolt mounting hole (66) and a baffle mounting hole (67), the locking buckle (64) has two mounting holes (641) with the same diameter as the locking rod (63); The baffle (65) is provided with a limiting hole (651), a fixed hole (652), a stress end (653) and a baffle piece (654), wherein the stress end (653) is a triangular structure, and the width is smaller than the concrete pouring groove (44) of the M-shaped beam (4); the baffle (65) is limited by the locking rod (63), the locking buckle (64) and the limiting hole (651) before installation is completed; The T-shaped connecting groove (611) of the upper half connector (61) is spliced with the T-shaped connector (621) of the lower half connector (62); the lower half connector (62) has a through screw hole (622), and the T-shaped connecting groove (611) of the upper half connector (61) is provided with a corresponding threaded interface for screw connection, limiting; one end of the T-shaped connecting groove (611) is a closed structure; The opening area of the baffle mounting hole (67) is greater than the cross-sectional area of the baffle piece (654) of the baffle (65) and smaller than the cross-sectional area of the stress end (653), so that the baffle (65) can be removed without sliding out from the stress end in the opposite direction, which is beneficial to fully stress and replace the M-shaped beam (4), the first M-shaped beam connector (6) and the related parts in the first M-shaped beam connector (6).

2. The replaceable M-shaped composite beam with new mortise and tenon connection node according to claim 1, characterized in that: The two ends of the M-shaped beam (4) are connected with the column (3) through the shear connector (1).

3. The replaceable M-shaped composite beam with new mortise and tenon connection node according to claim 1, characterized in that: A bending-resistant fixing member (2) is arranged above the M-shaped beam (4).

4. The replaceable M-shaped composite beam with new mortise and tenon connection node according to claim 1, characterized in that: A deformation-resistant member (17) is arranged below the M-shaped beam (4).

5. The replaceable M-shaped composite beam with new mortise and tenon connection node according to claim 1, characterized in that: A support rod (12) for supporting the M-shaped beam (4) is arranged on the column (3).

6. The replaceable M-shaped composite beam with new mortise and tenon connection node according to claim 1, characterized in that: The column (3) is a hollow structure, and a stud (9), a steel hoop (8) and a fixing rib (18) are arranged in the column (3), and the shear connector (1) passes through the column (3) and is connected with the stud (9).

7. The construction method of the replaceable M-shaped composite beam with a new mortise and tenon connection node according to claim 1, characterized in that, The steps include: Step one: analyze the engineering requirements, count the number of beams needed, make the structural parts, and reserve the corresponding mounting holes; Step two: erect the stand column (3) and install the required structural parts in the stand column (3); Step three: install the required connecting parts for fixing the M-shaped beam (4) into the mounting holes of the stand column (3); Step four: connect the required connecting parts for fixing the M-shaped beam (4) with the structural parts in the stand column (3); Step five: align and splice the shear connector slot (43) of the M-shaped beam (4) with the shear connector (1); Step six: erect the hoop (10) and make the hoop (10) fully contact with the stand column (3); and erect the support rod 12, connect one end of the support rod 12 with the hoop (10), and splice the other end with the shear connector (1); Step seven: install the anti-deformation part (17) and the anti-bending fixing part (2) near the shear connector (1); Step eight: install the anti-deformation part (17) at the midspan of the M-shaped beam (4); Step nine: put the cross beam connecting part (20) into the concrete pouring slot (44) of the M-shaped beam (4); Step ten: pour concrete into the concrete pouring slot (44), and after the concrete solidifies, put the cross beam (13) into the cross beam connecting part (20) and connect it through bolts.

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