Prefabricated wallboard secondary beam structure and construction method

Abstract

The application discloses a prefabricated wall plate secondary beam structure and a construction method, and particularly relates to the field of building structures, which comprises a prefabricated wall body and a prefabricated secondary beam, and a flow overflow prevention assembly is additionally arranged at the connection part of the prefabricated wall body and the prefabricated secondary beam; the prefabricated wall body comprises a wall plate body, a loading groove is arranged at the connection part of the wall plate body and the prefabricated secondary beam, a concave loading groove is arranged at the bottom of the loading groove, and a storage groove is arranged at the center of the concave loading groove. The prefabricated wall body and the prefabricated secondary beam are only required to be installed and a small amount of concrete is wet cast on site during assembly, so that the on-site operation time is reduced and the assembly speed is improved; the storage groove, the overflow groove and the embedded hole are designed to ensure that the concrete has sufficient filling capacity, the connection strength is avoided from being insufficient due to too small amount of newly cast concrete, and the concave-convex surface of the contact surface of the newly cast body and the prefabricated wall body and the prefabricated secondary beam is integrated to ensure that the joint has the bearing capacity and the seismic performance equivalent to the cast-in-place structure.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more specifically, to a precast wall panel secondary beam structure and construction method. Background Technology

[0002] In the field of prefabricated buildings, the connection nodes between precast wall panels and secondary beams are critical components affecting the overall structural performance. Traditional connection methods mainly include cast-in-place connections, bolted connections, and welded connections. However, these methods all have many technical defects in practical engineering applications, which seriously restrict construction efficiency, connection quality, and the development of building industrialization.

[0003] Cast-in-place connection is a common connection method. The process involves reserving steel bars or joints at the connection points of precast wall panels and secondary beams, and then pouring concrete after on-site formwork to achieve structural connection. However, it requires on-site formwork, steel bar tying, concrete pouring, and waiting for curing, which seriously affects the construction period. In addition, the density of the concrete pouring is affected by the workers' skill level, and defects such as honeycomb and voids are prone to occur, reducing the strength of the joint.

[0004] Bolted connections use pre-embedded bolts or post-anchoring technology to fix secondary beams to precast wall panels, which is suitable for some lightweight structures. However, bolted connections are flexible connections with poor seismic performance. They are prone to loosening under long-term dynamic loads, and bolts are prone to corrosion in humid environments, affecting structural safety.

[0005] In recent years, in order to improve the construction efficiency of prefabricated buildings, some technologies have adopted methods such as pre-embedded sleeve grouting, mechanical anchoring, or combined connection. However, during the grouting or pouring process, the grout is prone to overflow from the joints, requiring manual cleaning. In particular, when bulging or displacement of the formwork occurs, a large number of irregular protrusions are generated, which seriously affects the molding effect. Some nodes have reduced strength due to incomplete grouting or residual air pores, affecting the structural durability. Existing secondary beam structures are mostly of a single form, which is difficult to adapt to the needs of different spans, loads, or wall panel thicknesses. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a precast wall panel secondary beam structure and construction method. The technical problem to be solved by the present invention is: how to solve the problems of low construction efficiency and concrete overflow at the connection point affecting the molding in the connection project of precast wall panels and secondary beams in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a precast wall panel secondary beam structure, comprising a precast wall and a precast secondary beam, wherein an anti-overflow component is added at the connection between the precast wall and the precast secondary beam;

[0008] The precast wall includes a wall panel body. A loading groove is provided at the connection between the wall panel body and the precast secondary beam. A recessed loading groove is provided at the bottom of the loading groove. A storage groove is provided at the center of the recessed loading groove. Embedding holes arranged in a rectangular array are provided on both sides of the storage groove. An overflow groove is provided between adjacent embedding holes and between the embedding holes and the storage groove.

[0009] The overflow prevention assembly includes a longitudinal sealing plate and a transverse support plate. A bottom sealing plate adapted to the recessed groove is provided between the bottom end of the transverse support plate and the longitudinal sealing plate. The transverse support plate, the longitudinal sealing plate and the bottom sealing plate are integrally formed.

[0010] The precast secondary beam includes the secondary beam body, loading column, pouring port and embedded steel bars.

[0011] In a preferred embodiment, the precast secondary beam is configured as a type I secondary beam, which includes a secondary beam body I and a loading column I in the middle of the secondary beam body I, wherein the secondary beam body I and the loading column I are integrally cast.

[0012] The loading column I has a longitudinal pouring opening I at its center, through which the loading column I is longitudinally penetrated. Embedded steel bars I are arranged in a linear array on both sides of the pouring opening I at the bottom end of the loading column I, with the bottom end of the embedded steel bars I protruding outward from the bottom end of the loading column I.

[0013] In a preferred embodiment, the precast secondary beam is configured as a type II secondary beam, which includes a secondary split beam body A and a split beam body B. The split beam body A and the split beam body B are symmetrically distributed to form the type II secondary beam. Each of the split beam body A and the split beam body B is provided with a loading column II at one end. The split beam body A or the split beam body B is integrally cast with the loading column II.

[0014] The loading column II has a longitudinal pouring port II at the center of its end, through which the loading column II is longitudinally penetrated. The bottom of the loading column II has embedded steel bars II arranged in a linear array, with the bottom of the embedded steel bars II protruding outward from the bottom of the loading column II.

[0015] In a preferred embodiment, the precast secondary beam is configured as a type III secondary beam, which includes a secondary beam body III. Two secondary beam bodies III are symmetrically distributed to form a type III secondary beam. One end of the secondary beam body III is provided with a loading column III, and the top surface of the loading column III is lower than the top surface of the secondary beam body III, so that there is installation space for loading the type III secondary beam when loading the panel on the top surface of the wall panel. The secondary beam body III and the loading column III are integrally cast.

[0016] The loading column Ⅲ has a longitudinal pouring opening Ⅲ at the center of one end away from the secondary beam body Ⅲ. A pouring groove is provided between the top of the pouring opening Ⅲ and the top of the secondary beam body Ⅲ. The pouring opening Ⅲ and the pouring groove longitudinally penetrate the loading column Ⅲ. Embedded steel bars Ⅲ are linearly arrayed at the bottom of the loading column Ⅲ. The bottom of the embedded steel bars Ⅲ protrudes outward from the bottom of the loading column Ⅲ.

[0017] In a preferred embodiment, reinforcing bars are arranged between the loading column and the secondary beam body, wherein the reinforcing bars are staggered from the pouring opening;

[0018] The reinforcing members include, but are not limited to, longitudinal reinforcing bars, stirrups, and web bars;

[0019] The spacing between adjacent embedded steel bars is equal to the spacing between adjacent embedded holes, and the inner diameter of the embedded hole is greater than the outer diameter of the embedded steel bar.

[0020] In a preferred embodiment, the storage tank is configured as an arc-shaped tank, and the arc shape of the storage tank is adapted to the concave loading tank.

[0021] The loading slot is configured as an arc-shaped surface, and the arc of the loading slot is adapted to the arc of the horizontal load plate.

[0022] In a preferred embodiment, the top of the longitudinal sealing plate is provided with an installation groove, the shape of which corresponds to that of the loading column;

[0023] The longitudinal sealing plate, the transverse load plate, and the bottom sealing plate are all provided with shaped ribs inside, and the shaped ribs are provided with a rubber outer wrapping layer outside.

[0024] This invention also includes a construction method for a precast wall panel secondary beam structure, the specific construction steps of which are as follows:

[0025] S1. Wall panel grooving: Before the secondary beam is installed, grooves are cut into the wall panel installation position, and C30 or higher concrete with a high strength is used to grind the surface. The rough surface of the grooves makes the bonding between the new and old concrete stable, and the arc-shaped surfaces of the loading groove and the recessed loading groove are constructed. The material storage groove, embedding hole and overflow groove are constructed on the unformed concrete surface using a scribing knife and forming mold, and then cured and solidified to complete the precast wall treatment.

[0026] S2. Secondary beam surface treatment: Select an appropriate precast secondary beam according to the actual situation of the precast wall, check the protrusions or bulges on the outer surface of the loading column and chisel them out, and use the anti-overflow component to move laterally from the mounting groove to the outer surface of the loading column for inspection.

[0027] S3. Installation of anti-overflow components: Attach the longitudinal sealing plate to the end face of the secondary beam body near the loading column, and attach the transverse loading plate to the loading column. Use an air gun or bolts to fix the longitudinal sealing plate and transverse loading plate to the corresponding positions of the precast secondary beam, thus completing the fixed installation of the precast secondary beam and anti-overflow components after step S2.

[0028] S4. Beam assembly: The prefabricated secondary beams that fix the anti-overflow components in step S3 are aligned and installed in the loading groove position. The embedded steel bars are positioned and installed by the embedding holes, and the installation is confirmed by the fit between the loading column and the loading groove. During this process, the bottom sealing plate is inserted into the recessed loading groove position.

[0029] S5. Pouring and curing: Add fluid concrete with a strength of not less than C30 to the interface between the precast wall and the precast secondary beam through the pouring port. Remove the anti-overflow components when the concrete has settled but not completely cured, and complete the overall assembly.

[0030] The technical effects and advantages of this invention are as follows:

[0031] This invention requires only installation and a small amount of on-site wet pouring of concrete when assembling precast walls and precast secondary beams, thus reducing on-site operation time and increasing assembly speed. Through the design of storage tanks, overflow tanks and embedding holes, it ensures that there is enough concrete filling volume, avoiding insufficient connection strength caused by insufficient newly poured concrete. Furthermore, the newly poured body is used to solidify the concave and convex surfaces of the contact surfaces of the precast walls and precast secondary beams to form an integrated structure, ensuring that the joint has the same load-bearing capacity and seismic performance as cast-in-place structures.

[0032] This invention utilizes an anti-overflow component to effectively seal the gaps in the contact surfaces of the components. The high fluidity of the concrete can be used to fill the gaps, effectively preventing hollow surfaces and ensuring the shape of the main body. The anti-overflow component can also effectively prevent concrete from overflowing, avoiding concrete waste and preventing the occurrence of protrusions on the exterior surface caused by traditional bulging or overflow, thus reducing cleaning costs.

[0033] The Type I, Type II, and Type III secondary beams provided by this invention are suitable for special installation requirements in different scenarios, providing diversified secondary beam structures to adapt to different engineering needs. The standardized grooving and assembly process significantly shortens the construction period, reduces reliance on manual labor, and provides an efficient and reliable solution for building industrialization. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the Type I secondary beam assembly structure of the present invention.

[0035] Figure 2 This is a schematic diagram of the Type I secondary beam multi-beam layout assembly structure of the present invention.

[0036] Figure 3 This is a schematic diagram of the Type I secondary beam structure of the present invention.

[0037] Figure 4 This is a schematic diagram of the Type II secondary beam assembly structure of the present invention.

[0038] Figure 5This is a schematic diagram of the Type II secondary beam structure of the present invention.

[0039] Figure 6 This is a schematic diagram of the cross-sectional structure of the Type II secondary beam of the present invention.

[0040] Figure 7 This is a schematic diagram of the Type III secondary beam assembly structure of the present invention.

[0041] Figure 8 This is a schematic diagram of the Type III secondary beam structure of the present invention.

[0042] Figure 9 This is a schematic diagram of the prefabricated wall structure of the present invention.

[0043] Figure 10 For the present invention Figure 9 Enlarged view of the structure of section A in the middle.

[0044] Figure 11 This is a schematic diagram of the anti-overflow component structure of the present invention.

[0045] Figure 12 This is a schematic diagram of the cross-sectional structure of the anti-overflow component of the present invention.

[0046] The attached diagram is labeled as follows: 1 Precast wall, 2 Precast secondary beam, 3 Overflow prevention component;

[0047] 11 Wall panel body, 12 Loading groove, 13 Recessed groove, 14 Storage groove, 15 Embedding hole, 16 Overflow groove;

[0048] 201 Main beam I, 202 Loading column I, 203 Pouring port I, 204 Embedded steel bar I;

[0049] 211 Main body of split beam A, 212 Main body of split beam B, 213 Loading column II, 214 Pouring port II, 215 Embedded steel bar II, 216 Reinforcing bar;

[0050] 221 Secondary beam main body III, 222 Loading column III, 223 Pouring port III, 224 Pouring groove, 225 Embedded steel bar III;

[0051] 31 Longitudinal sealing plate, 32 Transverse bearing plate, 33 Bottom sealing plate, 34 Mounting groove, 35 Plastic rib plate. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Example 1:

[0054] This invention provides, for example Figures 1-3 The precast wall panel secondary beam structure shown includes a precast wall 1 and a precast secondary beam 2. An overflow prevention component 3 is added at the connection between the precast wall 1 and the precast secondary beam 2. In actual use, two or more sets of precast secondary beams 2 can be erected at the adjacent precast wall 1 positions, such as... Figure 2 ;

[0055] like Figures 9-10 The precast wall 1 includes a wall panel body 11, which is formed by steel reinforcement and concrete casting. A loading groove 12 is provided at the connection between the wall panel body 11 and the precast secondary beam 2. A recessed loading groove 13 is provided at the bottom of the loading groove 12, and a storage groove 14 is provided at the center of the recessed loading groove 13. The storage groove 14 is an arc-shaped groove, and its arc shape is adapted to match the recessed loading groove 13. Embedding holes 15 arranged in a rectangular array are provided on both sides of the storage groove 14. The rectangular array of embedding holes 15 facilitates the loading of the precast secondary beam 2 into the loading groove 12. The fine adjustment of the lateral position avoids the difficulty of small-size adjustment caused by a single installation position (i.e., only one row of embedded holes 15 are set to correspond to the embedded steel bars for installation), and relatively reduces the installation difficulty. At the same time, the pouring of concrete can form a new concrete column in the embedded hole 15, which can effectively enhance the bonding strength of the new and old concrete layers and ensure the shear force. The spacing between adjacent embedded steel bars is equal to the spacing between adjacent embedded holes 15, and the inner diameter of the embedded hole 15 is larger than the outer diameter of the embedded steel bar. Overflow grooves 16 are provided between adjacent embedded holes 15 and between embedded holes 15 and storage tank 14.

[0056] like Figures 11-12 The overflow prevention component 3 includes a longitudinal sealing plate 31 and a transverse load plate 32. The loading groove 12 is set with an arc-shaped surface, and the arc of the loading groove 12 is adapted to the arc of the transverse load plate 32. A bottom sealing plate 33 adapted to the recessed loading groove 13 is provided between the bottom end of the transverse load plate 32 and the longitudinal sealing plate 31. The transverse load plate 32, the longitudinal sealing plate 31 and the bottom sealing plate 33 are integrally formed. The top of the longitudinal sealing plate 31 is provided with an installation groove 34, and the shape of the installation groove 34 corresponds to the loading column. The longitudinal sealing plate 31, the transverse load plate 32 and the bottom sealing plate 33 are all provided with plastic ribs 35 inside, and the plastic ribs 35 are provided with a rubber outer wrapping layer outside.

[0057] like Figure 3The precast secondary beam 2 is designed as a Type I secondary beam, which includes a main body I201. A loading column I202 is located in the middle of the main body I201. The main body I201 and the loading column I202 are integrally cast. A longitudinal pouring opening I203 is located at the center of the loading column I202, through which the loading column I202 extends longitudinally. Embedded reinforcing bars I204 are arranged in a linear array on both sides of the pouring opening I203 at the bottom of the loading column I202. The bottom end of the reinforcing bar I204 protrudes outward from the bottom end of the loading column I202. Reinforcing bars 216 are arranged between the loading column I202 and the secondary beam main body I201. The reinforcing bars 216 are staggered from the pouring port I203. The reinforcing bars 216 include, but are not limited to, longitudinal reinforcing bars, stirrups and web bars. By adding reinforcing bars 216, the structural strength of the thin loading column I202 can be enhanced, preventing breakage during transportation or installation and ensuring load requirements.

[0058] When installing the precast wall 1 and precast secondary beam 2, if the top of the precast wall 1 has not yet been fitted with a floor slab or concrete layer, then Type I secondary beams are used for erection. The specific construction steps for the corresponding precast wall panel secondary beams are as follows:

[0059] S1. Wall panel grooving: Before the secondary beam is installed, grooves are cut at the installation position of the wall panel body 11. The width and depth of the grooves are slightly larger than the loading groove 12. C30 concrete with a strength of or higher is used to plastically grind the surface using a template (because the uneven and rough surface formed after grooving the wall panel body 11 is used to make the bonding surface between the new and old concrete stable). The arc-shaped surfaces of the loading groove 12 and the recessed loading groove 13 are constructed. The material storage groove 14, the embedded hole 15 and the overflow groove 16 are constructed on the unformed concrete surface using a scribing knife and forming mold. After curing and solidification, the precast wall 1 is completed.

[0060] S2. Secondary beam surface treatment: Select the appropriate type I secondary beam according to the actual situation of the precast wall 1, check the protrusions or bulges on the outer surface of the loading column and chisel them (no external protrusions), and use the anti-overflow component 3 to move laterally from the mounting groove 34 to the outer facade of the loading column for testing (the matching degree of the shape of the loading column I202 is tested by the mounting groove 34).

[0061] S3. Installation of anti-overflow component 3: Attach the longitudinal sealing plate 31 to the end face of the secondary beam body near the loading column, and attach the transverse loading plate 32 to the loading column. Use an air gun or bolts to fix the longitudinal sealing plate 31 and the transverse loading plate 32 to the corresponding positions of the precast secondary beam 2 (at this time, the width of the loading column I 202 is equivalent to the width of the loading groove 12. If the width of the loading column I 202 is greater than the width of the loading groove 12, rotate 180° and fix the longitudinal sealing plate 31 to the corresponding position of the wall panel body 11 on the outside of the loading groove 12). This completes the fixed installation of the precast secondary beam 2 and the anti-overflow component 3 after the processing in step S2.

[0062] S4. Beam Assembly: The prefabricated secondary beam 2, which was fixed with the anti-overflow component 3 in step S3, is aligned and installed in the loading groove 12. The embedded steel bar I204 is positioned and installed by the embedding hole 15, and the installation is confirmed by the fit between the loading column and the loading groove 12 (at this time, the height of the upper surface of the secondary beam body I201 and the loading column I202 is flush with the top surface of the wall panel body 11). During this period, the bottom sealing plate 33 is inserted into the recessed loading groove 13.

[0063] S5. Pouring and curing: Supplement the interface between the precast wall 1 and the precast secondary beam 2 with fluid concrete of strength not less than C30 through the pouring port I203. Remove the anti-overflow component 3 when it has settled but not completely cured (because the contact surface between the anti-overflow component 3 and the precast wall 1 and the precast secondary beam 2 is smooth, it is easier to remove. Even if it is not removed in time when it is completely cured, the small exposed anti-overflow component 3 will not affect the overall appearance). Complete the overall assembly.

[0064] Specifically, the fluid concrete replenished by the pouring port I203 accumulates in the storage tank 14 and is replenished to each embedding hole 15 by the overflow trough 16. Together with the embedded steel bars I204 embedded in the embedding holes 15, it forms a new reinforced concrete wet-cast body (the part extending into the embedding hole 15 and the surface connecting the type I secondary beam and the precast wall 1). At this time, the longitudinal sealing plate 31 and the installation groove 34 temporarily cover and seal the connection gap along the edge of the loading column I202, so that the concrete is filled densely, effectively preventing the overflow of concrete. Compared with the traditional on-site wet connection, the amount of concrete used is significantly reduced, the construction period is significantly shortened, and the reliance on manual labor is reduced. After the assembly is completed, the anti-overflow component 3 is removed, and there are no exposed metal parts, avoiding the loosening of flexible connections in the later stage.

[0065] Example 2:

[0066] Based on the precast wall panel secondary beam structure proposed in Example 1, the present invention provides a further technical solution for the precast secondary beam 2.

[0067] Please see Figures 4-6 The precast secondary beam 2 provided by the present invention is configured as a type II secondary beam. The type II secondary beam includes a secondary split beam body A 211 and a split beam body B 212. The split beam body A 211 and the split beam body B 212 are symmetrically distributed to form the type II secondary beam. Each of the split beam body A 211 and the split beam body B 212 is provided with a loading column II 213 at one end. The split beam body A 211 or the split beam body B 212 is integrally cast with the loading column II 213. A casting port II 214 is longitudinally provided at the center of the end of the loading column II 213. The loading column II 213 is longitudinally penetrated by the casting port II 214. The bottom end of the loading column II 213 is provided with embedded steel bars II 215 arranged in a linear array. The bottom end of the embedded steel bars II 215 protrudes outward from the bottom end of the loading column II 213.

[0068] Specifically, for the same precast wall 1 where no floor slab or concrete layer is added to the top and the precast wall 1 is to be used as the installation position for two precast secondary beams 2, when installing the Type II secondary beams (which can also be used for the installation method at the end away from the loading column I 202 in Example 1), the main body A 211 and the main body B of the split beam are... The loading column II 213 corresponding to 212 is symmetrically installed at the loading groove 12. The longitudinal sealing plate 31 is attached to the end face of the secondary beam body near the loading column II 213, and the transverse loading plate 32 is attached to the loading column. The longitudinal sealing plate 31 and the transverse loading plate 32 are fixed to the corresponding positions of the precast secondary beam 2 using an air gun or bolts. At this time, the width of the loading column II 213 is equivalent to the width of the loading groove 12. If the width of the loading column I 202 is greater than the width of the loading groove 12, it is rotated 180° and the longitudinal sealing plate 31 is fixed to the corresponding position of the wall panel body 11 on the outside of the loading groove 12. The embedded steel bar II 215 is positioned and installed through the embedded hole 15, and the installation is confirmed by the attachment of the loading column II 213 to the loading groove 12. The pouring port II 214 is used to add fluid concrete with a strength of not less than C30 to the joint surface of the precast wall 1 and the precast secondary beam 2. When it is definite and not completely cured, the anti-overflow component 3 is removed to complete the overall assembly.

[0069] The fluid concrete replenished by the pouring port II214 accumulates in the storage tank 14 and is replenished into each embedding hole 15 by the overflow trough 16. Together with the embedded steel bars II215 embedded in the embedding holes 15, it forms a new reinforced concrete wet casting. At this time, the overflow prevention component 3 temporarily covers and seals the connection gap along the edge of the loading column II213 to prevent concrete overflow. The newly poured concrete is used to solidify and stabilize the ends of the main body A 211 and the main body B 212 of the split beam. After the assembly is completed, the overflow prevention component 3 is removed. There are no exposed metal parts, avoiding loosening caused by flexible connection in the later stage.

[0070] Example 3:

[0071] Based on the precast wall panel secondary beam structure proposed in Example 1, the present invention provides a further technical solution for the precast secondary beam 2.

[0072] Please see Figures 7-8The precast secondary beam 2 provided by the present invention is configured as a type III secondary beam. The type III secondary beam includes a secondary beam body III221. Two secondary beam bodies III221 are symmetrically distributed to form a type III secondary beam. One end of the secondary beam body III221 is provided with a loading column III222 (the top surface of the loading column III222 is lower than the top surface of the secondary beam body III221, leaving installation space for loading the type III secondary beam when loading the panel on the top surface of the wall panel). The secondary beam body III221 and the loading column III222 are integrally cast. A pouring port III223 is longitudinally opened at the center of the end of the loading column III222 away from the secondary beam body III221. A pouring groove 224 is provided between the top of the pouring port III223 and the top of the secondary beam body III221. The pouring port III223 and the pouring groove 224 longitudinally penetrate the loading column III222. Embedded steel bars III225 are linearly arrayed at the bottom of the loading column III222, and the bottom of the embedded steel bars III225 protrudes outward from the bottom of the loading column III222.

[0073] Specifically, when a floor slab or concrete layer has been added to the top of the precast wall 1, a type III secondary beam is used for installation. Similarly, an adaptive groove is cut at the connection between the precast wall 1 and the top slab, and a loading groove 12 is shaped. The loading column III222 corresponding to the secondary beam body III221 is installed at the loading groove 12 position. The longitudinal sealing plate 31 is attached to the end face of the secondary beam body near the loading column III222, and the transverse loading plate 32 is attached to the loading column III222. The longitudinal sealing plate 31 and the transverse loading plate 32 are then fixed to the corresponding positions of the secondary beam body III221 using an air gun or bolts. At this point, the width of the loading column Ⅲ222 is equal to the width of the loading groove 12. If the width of the loading column Ⅲ222 is greater than the width of the loading groove 12, rotate 180° and fix the longitudinal sealing plate 31 to the corresponding position of the wall panel body 11 on the outside of the loading groove 12. Position and install the embedded steel bar Ⅲ225 through the embedding hole 15. Supplement the interface between the precast wall 1 and the precast secondary beam 2 with fluid concrete with a strength of not less than C30 through the pouring port Ⅲ223. Remove the anti-overflow component 3 when it has settled but not completely cured, and complete the overall assembly.

[0074] Since the top surface of the loading column Ⅲ222 is lower than the top surface of the secondary beam Ⅲ221, when the loading column Ⅲ222 is installed into the loading groove 12, even if a floor slab or concrete layer is added to the top of the precast wall 1, the loading column Ⅲ222 can still be adaptively adjusted in the position of the loading groove 12 to avoid the position of the recessed loading groove 13 blocking the embedded steel bar Ⅲ225. This method is only applicable to the case where only a floor slab is assumed at the top of the precast wall 1 or the loading groove 12 is opened in the middle of the precast wall 1.

[0075] If a loading groove 12 is opened at the top of the precast wall 1, and the continuous layer slab at the top of the precast wall 1 has been laid, the length of the embedded steel bar Ⅲ225 is shortened so that it is not affected by the position of the recessed loading groove 13 when the type III secondary beam is moved laterally to the loading groove 12. The pouring groove 224 is opened on the side wall of the secondary beam body Ⅲ221 and connected to the pouring port Ⅲ223. After the fluid concrete is poured and cured, the pouring groove 224 on the side wall is filled with concrete and the surface is ground and smoothed. This effectively solves the problems of inconvenience of post-installed precast secondary beam 2 or insufficient load strength at the installation position.

[0076] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0077] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0078] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precast wall panel secondary beam structure, comprising a precast wall (1) and a precast secondary beam (2), characterized in that: An overflow prevention component (3) is added at the connection between the precast wall (1) and the precast secondary beam (2); The precast wall (1) includes a wall panel body (11), a loading groove (12) is provided at the connection between the wall panel body (11) and the precast secondary beam (2), a recessed loading groove (13) is provided at the bottom of the loading groove (12), a storage groove (14) is provided at the center of the recessed loading groove (13), and an embedding hole (15) arranged in a rectangular array is provided on both sides of the storage groove (14). An overflow groove (16) is provided between adjacent embedding holes (15) and between the embedding hole (15) and the storage groove (14). The overflow prevention assembly (3) includes a longitudinal sealing plate (31) and a transverse carrying plate (32). A bottom sealing plate (33) adapted to the recessed groove (13) is provided between the bottom end of the transverse carrying plate (32) and the longitudinal sealing plate (31). The transverse carrying plate (32), the longitudinal sealing plate (31) and the bottom sealing plate (33) are integrally formed. The precast secondary beam (2) includes the secondary beam body, loading column, pouring port and embedded steel bars.

2. The precast wall panel secondary beam structure according to claim 1, characterized in that: The precast secondary beam (2) is configured as a type I secondary beam, which includes a secondary beam body I (201) and a loading column I (202) in the middle of the secondary beam body I (201). The secondary beam body I (201) and the loading column I (202) are integrally cast. The loading column I (202) is provided with a pouring port I (203) in the center longitudinally. The loading column I (202) is longitudinally penetrated by the pouring port I (203). The bottom end of the loading column I (202) is provided with embedded steel bars I (204) arranged in a linear array on both sides of the pouring port I (203). The bottom end of the embedded steel bars I (204) protrudes outward from the bottom end of the loading column I (202).

3. The precast wall panel secondary beam structure according to claim 1, characterized in that: The precast secondary beam (2) is set as a type II secondary beam. The type II secondary beam includes a secondary split beam body A (211) and a split beam body B (212). The split beam body A (211) and the split beam body B (212) are symmetrically distributed to form a type II secondary beam. Each of the split beam body A (211) and the split beam body B (212) is provided with a loading column II (213) at one end. The split beam body A (211) or the split beam body B (212) is integrally cast with the loading column II (213). The loading column II (213) is provided with a pouring port II (214) at the center of its end. The loading column II (213) is longitudinally penetrated by the pouring port II (214). The bottom end of the loading column II (213) is provided with embedded steel bars II (215) arranged in a linear array. The bottom end of the embedded steel bars II (215) protrudes outward from the bottom end of the loading column II (213).

4. The precast wall panel secondary beam structure according to claim 1, characterized in that: The precast secondary beam (2) is configured as a type III secondary beam. The type III secondary beam includes a secondary beam body III (221). Two secondary beam bodies III (221) are symmetrically distributed to form a type III secondary beam. One end of the secondary beam body III (221) is provided with a loading column III (222). The secondary beam body III (221) and the loading column III (222) are integrally cast. The loading column III (222) has a longitudinal pouring port III (223) at the center of the end away from the secondary beam main body III (221). A pouring groove (224) is provided between the top of the pouring port III (223) and the top of the secondary beam main body III (221). The pouring port III (223) and the pouring groove (224) longitudinally penetrate the loading column III (222). The bottom of the loading column III (222) has embedded steel bars III (225) arranged in a linear array. The bottom of the embedded steel bars III (225) protrudes outward from the bottom of the loading column III (222).

5. The precast wall panel secondary beam structure according to claim 1, characterized in that: Reinforcing members (216) are arranged between the loading column and the main body of the secondary beam, wherein the reinforcing members (216) are staggered from the pouring opening; The reinforcing members (216) include, but are not limited to, longitudinal reinforcing bars, stirrups, and web bars; The spacing between adjacent embedded steel bars is equal to the spacing between adjacent embedded holes (15), and the inner diameter of the embedded hole (15) is greater than the outer diameter of the embedded steel bar.

6. The precast wall panel secondary beam structure according to claim 1, characterized in that: The storage tank (14) is configured as an arc-shaped groove, and the arc-shaped configuration of the storage tank (14) is adapted to the recessed groove (13); The loading slot (12) is set as an arc surface, and the arc of the loading slot (12) is adapted to the arc of the horizontal plate (32).

7. The precast wall panel secondary beam structure according to any one of claims 1-6, characterized in that: The top of the longitudinal sealing plate (31) is provided with an installation groove (34), and the shape of the installation groove (34) corresponds to that of the loading column; The longitudinal sealing plate (31), the transverse load plate (32) and the bottom sealing plate (33) are all provided with plastic ribs (35), and the plastic ribs (35) are provided with a rubber outer wrapping layer.

8. A construction method for a precast wall panel secondary beam structure, applied to the precast wall panel secondary beam structure described in claim 7, characterized in that: The specific construction steps are as follows: S1. Grooving of wall panels: Before the installation of secondary beams, grooves are made in the installation position of the wall panel body (11), and the surface of the loading groove (12) and the recessed loading groove (13) are constructed using C30 concrete with a strength of or higher. The material storage groove (14), the embedded hole (15) and the overflow groove (16) are constructed on the unformed concrete surface using a scribing knife and forming mold. The material storage groove (14), the embedded hole (15) and the overflow groove (16) are then cured and solidified to complete the treatment of the precast wall (1). S2, secondary beam surface treatment: Select an adaptive precast secondary beam (2) according to the actual situation of the precast wall (1), check the protrusions or bulges on the outer surface of the loading column and chisel them, and use the anti-overflow component (3) to check the transverse movement of the loading column by the mounting groove (34) against the outer surface of the loading column. S3, Installation of anti-overflow component (3): The longitudinal sealing plate (31) is attached to the end face of the secondary beam body near the loading column, and the transverse loading plate (32) is attached to the loading column. The longitudinal sealing plate (31) and the transverse loading plate (32) are fixed to the corresponding positions of the precast secondary beam (2) using an air gun or bolts, thus completing the fixed installation of the precast secondary beam (2) and the anti-overflow component (3) after the treatment in step S2. S4, Beam Assembly: The precast secondary beam (2) of the anti-overflow component (3) in step S3 is aligned and installed in the loading groove (12). The embedded steel bar is positioned and installed by the embedding hole (15), and the installation is confirmed by the fit between the loading column and the loading groove (12). During this period, the bottom sealing plate (33) is inserted into the recessed loading groove (13). S5. Pouring and curing: Add fluid concrete with a strength of not less than C30 to the interface between the precast wall (1) and the precast secondary beam (2) through the pouring port. Remove the anti-overflow component (3) when it has been sized and not completely cured, and complete the overall assembly.

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