Rigid connection method for tenon-and-mortise structure of linear wall of modular building

Abstract

The invention discloses a rigid connection method for a tenon-and-mortise structure of a linear wall of a modular building, which is applied to a splicing position of wallboards of an outer wall between two prefabricated modules, outer side bearing components between the modules are tightly connected through the tenon-and-mortise structure, and the two wallboards and a connecting piece can form the tenon-and-mortise structure at the splicing end. Then fine aggregate concrete or a cement-based grouting material is filled in a stroke cavity formed by the tenon-and-mortise structure, so that all the components form rigid connection nodes; according to the assembly type wallboard, vertical falling in-place can be achieved, the situation that a traditional assembly type wallboard needs to be in place through translation in the installation process is avoided, the assembly type wallboard is more suitable for the actual situation that a prefabricated module needs to be in place through vertical falling, meanwhile, formwork and operation opening design is omitted, operation openings do not need to be designed on the inner sides of the wallboards, and the wallboards are closely spliced; and the workload of on-site formwork erecting and post-processing is reduced, on-site construction without a formwork is achieved, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of modular buildings, in particular to a rigid connection method for a mortise and tenon joint structure of a modular building straight wall. Background Art

[0002] With the development and promotion of modular buildings, modular prefabricated buildings have been widely used. Figure 1 and Figure 2 As shown, during the assembly construction of a multi-story building, two prefabricated wall panels (single-line wall) of the exterior wall are horizontally connected. In the traditional assembly method, the wall panels are arranged in an up and down staggered manner in the groove using steel anchor rings, steel bar anchor rings, steel wire ropes and other connectors, and then these connectors are connected to the vertically arranged steel bars, and steel bars are inserted in the overlapping projection area to connect the wall panels on both sides. This requires the prefabricated wall panel components to be translated from a position close to the ground to the installation position and then dropped into place for assembly and construction. This process requires high accuracy and positioning during hoisting so that the vertical force-bearing steel bars can accurately match the connectors.

[0003] In actual operation, the prefabricated modules are heavy, and it is difficult to ensure accurate positioning of the traditional assembled structure during hoisting. It is also difficult to use the grouting sleeve connection method, which will result in a long exposed length of the vertical stress-bearing steel bars. The modules cannot be translated into position like prefabricated wall panels, and it is also difficult to adjust them later. In addition, in order to facilitate the adjustment operation, some technologies have proposed adding an operating port on the inside of the wall panel on this basis, and installing the connector through the operating port after the wall panel is installed in place. However, this will bring about the problem of supporting the formwork of the operating port and the trouble of later processing. Therefore, the existing horizontal connection method between two exterior wall prefabricated wall panels (single-line walls) during the prefabricated construction of multi-story buildings is no longer applicable in the hoisting environment of prefabricated modules. Summary of the invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a rigid connection method for the mortise and tenon structure of a modular building wall, so as to solve the problem that traditional assembled wall panels need to be translated into place when connected, and adapt to the actual situation that prefabricated modules need to be dropped vertically into place.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The method for rigidly connecting the mortise and tenon joint structure of a modular building straight wall provided by the present invention comprises two wall panels and a mortise and tenon joint structure arranged between the two wall panels, and further comprises the following steps:

[0007] S00: Prefabrication of wall panels: prefabricate the two wall panels that form the straight wall, and then set a number of evenly arranged connectors from bottom to top along the joint direction of the two wall panels when assembling, one end of the connector is embedded in the prefabricated wall panel, so that the connector and the wall panel are formed as one piece, and the other end of the connector on the two wall panels that is not embedded in the wall panels forms a mortise and tenon structure that cooperates with each other; S10: Assembling in place: first install one of the prefabricated wall panels, and then slowly drop the other adjacent wall panel in a vertical state, so that the connectors on the two prefabricated wall panels cooperate with each other, and adjust the two wall panels to the appropriate position at the same time; S20: Connection: insert a PE rod into the joint of the two wall panels, and finally pour cement-based grouting material or fine stone concrete into the cavity of the mortise and tenon structure to form a rigid connection node of the mortise and tenon structure, and connect the straight wall panels of the two modules together.

[0008] In step S00, the connecting member includes a first convex member and a first concave member, wherein a first dovetail groove cooperating with the first convex member is provided at a splicing end of one wall panel, and a dovetail boss cooperating with the first concave member is provided at a splicing end of the other wall panel, the first convex member includes a first convex bottom plate fixedly arranged at the bottom of the first dovetail groove, the first convex bottom plate is fixedly arranged with a first T-shaped platform on one side located in the first dovetail groove, and is fixedly arranged with two steel bars embedded in the wall panel on the other side; the first concave member includes a first concave bottom plate fixedly arranged on the dovetail boss, the first concave bottom plate is fixedly arranged with a trapezoidal cavity cooperating with the first T-shaped platform on one side located in the first dovetail groove, the bottom of the trapezoidal cavity is provided with a first notch cooperating with the first T-shaped platform, and is fixedly arranged with two steel bars embedded in the wall panel on the other side, and during assembly, the first T-shaped platform is inserted into the trapezoidal cavity along the first notch.

[0009] In step S00, the connecting member includes a second convex member and a second concave member, the second convex member includes a second convex bottom plate that cooperates with the second concave member, the splicing end of one wall panel is provided with a second dovetail groove that cooperates with the second concave member, the second convex bottom plate is fixed to the splicing end of the other wall panel, the second convex bottom plate cooperates with the second concave member on one side and is fixed with two straight steel plates embedded in the wall panel on the other side; the second concave member includes a first concave steel plate, one end of the first concave steel plate is pre-embedded in the wall panel, and the other end is provided with a second notch that cooperates with the second T-shaped stage, and during assembly, the second T-shaped stage is inserted into the cavity of the first concave steel plate along the second notch.

[0010] In step S00, the connecting member includes a third convex member and a third concave member, the third convex member includes a third convex bottom plate that cooperates with the third concave member, a splicing end of one wall panel is provided with a third long groove that cooperates with the third concave member, the third convex bottom plate is fixedly arranged on the splicing end of the other wall panel, a third T-shaped platform is fixedly arranged on one side of the third convex bottom plate that cooperates with the third concave member, and two straight steel plates embedded in the wall panel are fixedly arranged on the other side; the third concave member includes a U-shaped steel plate, the closed end of the U-shaped steel plate is pre-embedded in the wall panel, the open end of the U-shaped steel plate is fixedly arranged in the third long groove, third distribution countersunk holes symmetrical to the third T-shaped platform are provided on both sides of the third concave member and the wall panel, and a third through hole that cooperates with the third distribution countersunk holes is provided on the third T-shaped platform. During assembly, after the third T-shaped platform is extended into the U-shaped steel plate, the screw is inserted from the third distribution countersunk hole and the third through hole and screwed into a locking nut with a gasket for fixing.

[0011] The wall panel provided with the third convex member is also fixed with a tenon matched with the third long groove at the splicing end.

[0012] In step S00, the connecting part includes a first I-beam and a plurality of steel bar rings. A fourth long groove matching with the first I-beam is provided at the spliced ​​ends of the two wall panels. When the wall panels are prefabricated, the plurality of steel bar rings are alternately and evenly pre-embedded into the wall panels along the edge direction of the wall panels. When pre-embedded, vertical force-bearing steel bars are further arranged near the four top corners of the steel bar rings. A third notch matching with the first I-beam is provided on the steel bar rings in the fourth long groove. When assembled, the two ends of the first I-beam are inserted into the fourth long grooves of the two wall panels along the third notch.

[0013] In step S00, the connecting part includes a second I-beam and a second concave steel plate, one end of the second concave steel plate is pre-embedded in the wall panel, and the other end is provided with a fourth notch that matches the second I-beam. During assembly, the two ends of the second I-beam are inserted into the cavity of the second concave steel plate along the fourth notch.

[0014] The beneficial effects of the present invention are:

[0015] (1) It can be dropped vertically into place, avoiding the need for traditional prefabricated wall panels to be moved into place during installation. It is more suitable for the actual situation where prefabricated modules need to be dropped vertically into place. Unlike the mortise and tenon structure in other prefabricated buildings, which has some limiting effects, this case is more suitable for the points where two straight wall panels are horizontally connected, and it is convenient to subsequently pour cement-based grouting material / fine stone concrete at the node to fix the two wall panels.

[0016] (2) Formwork-free and operation opening design: no operation opening is required on the inner side of the wall panels. The wall panels are closely assembled to reduce the workload of on-site formwork and post-processing, which is conducive to on-site formwork-free construction and improves construction efficiency.

[0017] (3) The present invention provides a variety of different connection schemes to adapt to the limitations allowed by different conditions during construction, has strong flexibility, and meets the diverse needs of the construction party. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the elevation view of the anchor ring steel bar connection at the straight wall connection node in the traditional prefabricated building;

[0019] Figure 2 This is the cross-sectional view of the anchor ring reinforcement connection at the straight wall connection node in traditional prefabricated buildings;

[0020] Figure 3 is a schematic diagram of a construction location in actual circumstances in a specific implementation manner of the present invention;

[0021] Figure 4 It is a schematic diagram of the principle of embodiment 1 of the present invention;

[0022] Figure 5 is a schematic diagram of the three-dimensional structure of embodiment 1 of the present invention;

[0023] Figure 6 2 is a schematic diagram of the principle of Embodiment 2 of the present invention;

[0024] Figure 7 is a schematic diagram of the three-dimensional structure of embodiment 2 of the present invention;

[0025] Figure 8 Schematic diagram of the principle of embodiment 3 of the present invention;

[0026] Fig. 9 is a schematic diagram of the three-dimensional structure of embodiment 3 of the present invention;

[0027] Fig.10 Schematic diagram of the principle of embodiment 4 of the present invention;

[0028] Fig.11 is a schematic diagram of the three-dimensional structure of embodiment 4 of the present invention;

[0029] Fig.12 is a schematic diagram of the principle of embodiment 5 of the present invention;

[0030] Fig.13 is a schematic diagram of the three-dimensional structure of embodiment 5 of the present invention;

[0031] Fig.14 is a schematic diagram of the principle of embodiment 6 of the present invention;

[0032] Fig.15 It is a schematic diagram of the three-dimensional structure of Example 6 of the present invention;

[0033] In the figure:

[0034] 1. Wall panel; 11. Mortise and tenon structure; 2. Connectors; 3. PE rod;

[0035] 21, first convex member; 22, first concave member; 12, first dovetail groove; 13, dovetail boss; 211, first convex bottom plate; 212, first T-shaped platform; 221, first concave bottom plate; 222, trapezoidal cavity; 2221, first notch;

[0036] 23, second convex member; 24, second concave member; 231, second convex bottom plate; 14, second dovetail groove; 232, second T-shaped platform; 241, first concave steel plate; 2411, second notch;

[0037] 25, third convex member; 26, third concave member; 251, third convex bottom plate; 15, third long groove; 252, third T-shaped platform; 261, U-shaped steel plate; 16, third distribution countersunk hole; 2521, third through hole;

[0038] 17. Tenon;

[0039] 27, first I-beam; 28, steel bar ring; 18, fourth long groove; 281, third notch; 29, vertical force-bearing steel bar;

[0040] 201, second I-beam; 202, second concave steel plate; 2021, fourth notch. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0042] The present invention provides a method for rigidly connecting a modular building straight wall with a mortise and tenon structure. The method is applied to the splicing position of the wall panels 1 of the outer wall between two prefabricated modules. The outer side load-bearing components between the modules are tightly connected through the mortise and tenon structure 11. The two wall panels 1 and the connecting member 2 can form the mortise and tenon structure 11 at the splicing end, and then fine stone concrete or cement-based grouting material is filled in the stroke cavity formed by the mortise and tenon structure 11 to form a rigid connection node for all components; specifically, it includes two wall panels 1 and the mortise and tenon structure 11 arranged between the two wall panels 1, and also includes the following steps:

[0043] S00: Prefabrication of wall panels 1: prefabricate two wall panels 1 constituting a straight wall, and then set a number of evenly arranged connectors 2 from bottom to top along the joint direction of the two wall panels 1 when assembled, and embed one end of the connector 2 into the prefabricated wall panel 1, so that the connector 2 and the wall panel 1 are integrally formed, and the other ends of the connectors 2 on the two wall panels 1 that are not embedded in the wall panel 1 form a mutually matching mortise and tenon structure 11;

[0044] S10: Assembling in place: first install one of the prefabricated wall panels 1, and then slowly drop the other adjacent wall panel 1 in a vertical state, so that the connecting pieces 2 on the two prefabricated wall panels 1 cooperate with each other, and at the same time adjust the two wall panels 1 to a suitable position;

[0045] S20: Connection: Insert PE rods 3 into the joints of the two wall panels 1, and use the PE rods 3 as fillers for waterproofing the joints so that they can be glued later. When gluing later, use weather-resistant sealant to ensure waterproofness and sealing. Finally, pour cement-based grouting material or fine stone concrete into the cavity of the mortise and tenon structure 11 to form a rigid connection node of the mortise and tenon structure 11, and connect the two modules of the I-shaped wall panels 1 together.

[0046] In the method of the prefabricated connection of the horizontal connection of the straight wall, the prefabricated module can be directly dropped vertically into place, which is more suitable for the actual working conditions during operation, and avoids the overly complicated structure and layout of the connecting member 2 on the wall 1, so that a large number of processes can be completed before assembly. For example, when the wall panel 1 is prefabricated, the connecting member 2 that needs to be matched is pre-buried in the wall panel 1 in advance, so that the connecting member 2 and the wall panel 1 can be integrally formed, which makes it unnecessary to open an operation port on the wall panel 1 to set and adjust the connecting member 2, that is, the two wall panels 1 can be directly connected in a close-fitting manner, and the two wall panels 1 can be directly placed vertically and then cement-based grouting material or fine stone concrete can be poured into the travel cavity formed at the mortise and tenon connection node. At the same time, compared with the single form of the traditional prefabricated solution, based on the construction connection method proposed above, this case can provide a variety of connection solutions under a variety of different needs;

[0047] Embodiment 1: This embodiment is a first dovetail mortise and tenon structure style when the above method is used for connection. In step S00, the connecting member 2 includes a first convex member 21 and a first concave member 22, wherein a first dovetail groove 12 cooperating with the first convex member 21 is provided at a splicing end of one wall panel 1, and a dovetail boss 13 cooperating with the first concave member 22 is provided at a splicing end of the other wall panel 1, the first convex member 21 includes a first convex bottom plate 211 fixedly arranged at the bottom of the first dovetail groove 12, the first convex bottom plate 211 is fixedly arranged with a first T-shaped platform 212 on one side located in the first dovetail groove 12, and two steel bars embedded in the wall panel 1 are fixedly arranged on the other side; the first concave member 22 includes a first concave bottom plate 221 fixedly arranged on the dovetail boss 13, the first concave bottom plate 221 is fixedly arranged at the bottom of the first dovetail groove 12 A trapezoidal cavity 222 that cooperates with the first T-shaped platform 212 is fixedly provided on one side of the first dovetail groove 12, and a first notch 2221 that cooperates with the first T-shaped platform 212 is opened at the bottom of the trapezoidal cavity 222, and two steel bars embedded in the wall panel 1 are fixedly provided on the other side. During assembly, the first T-shaped platform 212 is inserted into the trapezoidal cavity 222 along the first notch 2221; during specific construction, referring to the above method, one of the prefabricated wall panels 1 is installed on-site, and the other wall panel 1 slowly falls in a vertical state. After the first convex part 21 and the first concave part 22 are combined with each other, a PE rod is inserted into the joint, and finally a cement-based grouting material is poured into the cavity of the mortise and tenon structure 11 to form a rigid connection node of the mortise and tenon structure, and the I-shaped exterior walls of the two wall panels 1 are connected together.

[0048] Embodiment 2: This embodiment is a second dovetail mortise and tenon structure style when the above method is used for connection. In step S00, the connecting member 2 includes a second convex member 23 and a second concave member 24. The second convex member 23 includes a second convex bottom plate 231 that cooperates with the second concave member 24. A second dovetail groove 14 that cooperates with the second concave member 24 is opened at the splicing end of one wall panel 1. The second convex bottom plate 231 is fixedly arranged at the splicing end of the other wall panel 1. A second T-shaped groove 14 that cooperates with the second concave member 24 is fixedly arranged on one side of the second convex bottom plate 231 that cooperates with the second concave member 24. The second concave member 24 comprises a first concave steel plate 241, one end of which is embedded in the wall panel 1, and the other end of which is provided with a second notch 2411 which matches with the second T-shaped platform 232. During assembly, the second T-shaped platform 232 is inserted into the cavity of the first concave steel plate 241 along the second notch 2411. The specific construction method is as described above. The difference from the first dovetail mortise and tenon structure connection is that the structure is simpler and has stronger integrity.

[0049] Embodiment 3: This embodiment is the first type of through-pin type mortise and tenon structure style when the above method is used for connection. In step S00, the connecting member 2 includes a third convex member 25 and a third concave member 26. The third convex member 25 includes a third convex bottom plate 251 that cooperates with the third concave member 26. A third long groove 15 that cooperates with the third concave member 26 is opened at the splicing end of one wall panel 1. The third convex bottom plate 251 is fixed to the splicing end of the other wall panel 1. A third T-shaped platform 252 is fixed on one side of the third convex bottom plate 251 that cooperates with the third concave member 26, and two straight steel plates embedded in the wall panel 1 are fixed on the other side; the third concave member 26 includes a U-shaped steel plate 261. The closed end of the U-shaped steel plate 261 is pre-embedded in the wall panel 1, and the open end of the U-shaped steel plate 261 is fixed in the third long groove 15. The third concave member 26 and the wall panel 1 have two sides with symmetric third T-shaped platforms 252. The third distribution countersunk hole 16 and the third T-shaped platform 252 are provided with a third through hole 2521 which cooperates with the third distribution countersunk hole 16. During assembly, after the third T-shaped platform 252 extends into the U-shaped steel plate 261, the screw is inserted from the third distribution countersunk hole 16 and the third through hole 2521 and screwed into the locking nut with a gasket for fixing; during specific construction, according to the connection method recorded above, one of the wall panels 1 is installed during on-site construction, and the other wall panel 1 slowly falls in a vertical state. After the third convex part 25 and the third concave part 26 are combined with each other, the third distribution countersunk hole 16 and the third through hole 2521 form a straight line, and the screw is inserted from the third distribution countersunk hole 16 and the third through hole 2521 and screwed into the locking nut with a gasket for fixing; finally, a PE rod is inserted into the joint, and fine stone concrete is poured into the cavity of the mortise and tenon structure to form a rigid connection node of the mortise and tenon structure.

[0050] Embodiment 4: Different from Embodiment 3, the wall panel 1 provided with the third convex member 25 is also provided with a tenon 17 cooperating with the third long groove 15 at the splicing end, so that the two wall panels 1 also form a mortise and tenon structure at the splicing end. The specific construction method is as above.

[0051] Embodiment 5: This embodiment is a first double-groove mortise and tenon structure style when the above method is used for connection. In step S00, the connecting member 2 includes a first I-beam 27 and a plurality of reinforcing steel rings 28. The spliced ​​ends of the two wall panels 1 are provided with a fourth long groove 18 that matches the first I-beam 27. When the wall panel 1 is prefabricated, a plurality of reinforcing steel rings 28 are alternately and evenly pre-embedded into the wall panel 1 along the edge direction of the wall panel 1. When pre-embedded, the reinforcing steel rings 28 are also provided with vertical force-bearing steel bars 29 near the four top corners. The reinforcing steel rings 28 in the fourth long groove 18 are provided with a third short groove that matches the first I-beam 27. During assembly, both ends of the first I-beam 27 are inserted into the fourth long grooves 18 of the two wall panels 1 along the third notch 281; during specific construction, one of the wall panels 1 is installed on site, and the other wall panel 1 slowly falls in a vertical state. After the two wall panels 1 are spliced ​​together, the first I-beam 27 with a full length is inserted into the cavity where the two walls are spliced ​​according to the height of the wall panels 1. The flanges of the first I-beam 27 are respectively located in the steel bar ring 28 in the fourth long groove 18, and a PE rod is inserted at the joint. Finally, fine stone concrete is poured into the cavity to form a rigid connection node of the mortise and tenon structure.

[0052] Embodiment 6: This example is a second double-groove mortise and tenon structure style when connected by the above method. In step S00, the connecting member 2 includes a second I-beam 201 and a second concave steel plate 202. One end of the second concave steel plate 202 is pre-embedded in the wall panel 1, and the other end is provided with a fourth notch 2021 that matches the second I-beam 201. During assembly, the two ends of the second I-beam 201 are inserted into the cavity of the second concave steel plate 202 along the fourth notch 2021. The specific construction method is as above.

[0053] In summary: In different application scenarios, different construction styles and solutions can be used:

[0054] (1) In the first dovetail mortise and tenon structure style, the joint end structure of the wall panel 1 has higher technical requirements for the component processing factory, but it has extremely high waterproof performance. The second dovetail mortise and tenon structure style is less difficult to process, and the cavity can be filled with fine stone concrete, which is convenient for construction, but its waterproof performance is not as good as the first one;

[0055] (2) Screws and locking nuts are added to the side of the through-pin mortise and tenon structure, which can be used for reinforcement at the construction site. The first type of through-pin mortise and tenon structure has low processing difficulty and convenient on-site construction; the second type of through-pin mortise and tenon structure has an additional boss, which extends the water flow path and has better waterproof performance.

[0056] (3) The first double-groove through-tenon mortise and tenon structure style is easy to process and has low difficulty in on-site construction. Compared with the second double-groove through-tenon mortise and tenon structure style, it has high operability. However, the first double-groove through-tenon mortise and tenon structure style has a larger vertical force-bearing area and relatively better force-bearing performance.

[0057] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A rigid connection method for a modular building wall mortise and tenon structure, characterized in that: The invention comprises two wall panels (1) and a mortise and tenon structure (11) arranged between the two wall panels (1), and further comprises the following steps: S00: Prefabrication of wall panels (1): prefabricate two wall panels (1) constituting a straight wall, and then set a plurality of evenly arranged connecting pieces (2) from bottom to top along the joint direction of the two wall panels (1) when assembled, and embed one end of the connecting piece (2) in the prefabricated wall panel (1) so that the connecting piece (2) and the wall panel (1) are integrally formed, and the other ends of the connecting pieces (2) on the two wall panels (1) that are not embedded in the wall panels (1) form mutually matching mortise and tenon structures (11); S10: Assembling in place: first install one of the prefabricated wall panels (1), then slowly drop the other adjacent wall panel (1) in a vertical state, so that the connecting pieces (2) on the two prefabricated wall panels (1) fit together, and at the same time adjust the two wall panels (1) to a suitable position; S20: Connection: Insert the PE rod (3) into the joint of the two wall panels (1), and finally pour cement-based grouting material or fine stone concrete into the cavity of the mortise and tenon structure (11) to form a rigid connection node of the mortise and tenon structure (11), and connect the two modules of the straight-line wall panels (1) together.

2. The method for rigid connection of modular building straight wall mortise and tenon structure according to claim 1, characterized in that: In step S00, the connecting member (2) comprises a first convex member (21) and a first concave member (22), wherein a first dovetail groove (12) cooperating with the first convex member (21) is provided at a splicing end of one wall panel (1), and a dovetail boss (13) cooperating with the first concave member (22) is provided at a splicing end of the other wall panel (1), and the first convex member (21) comprises a first convex bottom plate (211) fixedly arranged at the bottom of the first dovetail groove (12), and the first convex bottom plate (211) is fixedly arranged with a first T-shaped platform (212) on one side located in the first dovetail groove (12), and is fixedly arranged with two steel bars embedded in the wall panel (1) on the other side; The first concave member (22) comprises a first concave bottom plate (221) fixedly mounted on the dovetail boss (13); a trapezoidal cavity (222) matching with the first T-shaped platform (212) is fixedly mounted on one side of the first concave bottom plate (221) located in the first dovetail groove (12); a first notch (2221) matching with the first T-shaped platform (212) is formed at the bottom of the trapezoidal cavity (222); two steel bars embedded in the wallboard (1) are fixedly mounted on the other side; during assembly, the first T-shaped platform (212) is inserted into the trapezoidal cavity (222) along the first notch (2221).

3. The method for rigid connection of modular building straight wall mortise and tenon structure according to claim 1, characterized in that: In step S00, the connecting member (2) comprises a second convex member (23) and a second concave member (24), the second convex member (23) comprising a second convex bottom plate (231) cooperating with the second concave member (24), a second dovetail groove (14) cooperating with the second concave member (24) is provided at a splicing end of one wall panel (1), the second convex bottom plate (231) is fixed to the splicing end of the other wall panel (1), a second T-shaped platform (232) is fixed on one side of the second convex bottom plate (231) cooperating with the second concave member (24), and two straight steel plates embedded in the wall panel (1) are fixed on the other side; The second concave member (24) comprises a first concave steel plate (241), one end of the first concave steel plate (241) is pre-buried in the wall panel (1), and the other end is provided with a second notch (2411) that matches the second T-shaped platform (232). During assembly, the second T-shaped platform (232) is inserted into the cavity of the first concave steel plate (241) along the second notch (2411).

4. The method for rigid connection of modular building straight wall mortise and tenon structure according to claim 1, characterized in that: In step S00, the connecting member (2) comprises a third convex member (25) and a third concave member (26), the third convex member (25) comprises a third convex bottom plate (251) matched with the third concave member (26), a third long groove (15) matched with the third concave member (26) is provided at the splicing end of one wall panel (1), the third convex bottom plate (251) is fixed to the splicing end of the other wall panel (1), a third T-shaped platform (252) is fixed on one side of the third convex bottom plate (251) matched with the third concave member (26), and two straight steel plates embedded in the wall panel (1) are fixed on the other side; The third concave member (26) comprises a U-shaped steel plate (261), the closed end of the U-shaped steel plate (261) is pre-buried in the wall panel (1), and the open end of the U-shaped steel plate (261) is fixed in the third long groove (15). The third concave member (26) and the wall panel (1) are provided with third distribution countersunk holes (16) symmetrical with respect to the third T-shaped platform (252) on both sides, and the third T-shaped platform (252) is provided with a third through hole (2521) matching with the third distribution countersunk hole (16). During assembly, after the third T-shaped platform (252) is extended into the U-shaped steel plate (261), a screw is inserted from the third distribution countersunk hole (16) and the third through hole (2521) and is screwed into a locking nut with a gasket for fixing.

5. The method for rigid connection of modular building straight wall mortise and tenon structure according to claim 4 is characterized by: The wallboard (1) provided with the third convex member (25) is also provided with a tenon (17) at the splicing end, which is matched with the third long groove (15).

6. The method for rigid connection of modular building straight wall mortise and tenon structure according to claim 1, characterized in that: In step S00, the connecting member (2) comprises a first I-beam (27) and a plurality of steel bar rings (28); a fourth long groove (18) matching with the first I-beam (27) is provided at the spliced ​​ends of the two wall panels (1); when the wall panels (1) are prefabricated, the plurality of steel bar rings (28) are pre-embedded in the wall panels (1) alternately and evenly along the edge direction of the wall panels (1); the steel bar rings (28) in the fourth long groove (18) are provided with a third notch (281) matching with the first I-beam (27); when assembled, the two ends of the first I-beam (27) are inserted into the fourth long grooves (18) of the two wall panels (1) along the third notch (281).

7. The method for rigidly connecting the mortise and tenon joint structure of a modular building wall according to claim 6 is characterized by: When pre-embedded, the steel bar ring (28) is also provided with vertical stress-bearing steel bars (29) near the four top corners.

8. The method for rigid connection of modular building straight wall mortise and tenon structure according to claim 1, characterized in that: In step S00, the connecting member (2) comprises a second I-beam (201) and a second concave steel plate (202), one end of the second concave steel plate (202) is pre-embedded in the wall panel (1), and the other end is provided with a fourth notch (2021) that matches the second I-beam (201). During assembly, the two ends of the second I-beam (201) are inserted into the cavity of the second concave steel plate (202) along the fourth notch (2021).

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