A multi-story frame structure for building and its construction method

Abstract

This invention discloses a multi-story frame structure and construction method for buildings, relating to the field of building frames. It includes multiple sets of precast frame columns stacked together. Wall panels are installed on both sides of each precast frame column. Engaging grooves are provided at the top and bottom edges of each precast frame column, and limiting reinforcing bars are installed inside the engaging grooves, with the limiting reinforcing bars horizontally positioned with the precast frame columns. During installation, the invention uses two sets of precast frame columns to limit the position of the precast frame beams. First, one set of precast frame columns is fixed. Then, the fixing blocks of the precast frame beams are engaged in the engaging grooves, and the limiting reinforcing bars are inserted into the connecting sleeves to limit the position of the precast frame beams. Subsequently, the second set of precast frame columns is placed above the first set, and the engaging grooves and limiting reinforcing bars are aligned with the openings at the top of the precast frame beams.

Description

Technical Field

[0001] This invention relates to the field of building frames, specifically to a multi-story frame structure for buildings and its construction method. Background Technology

[0002] Prefabricated construction is a building method that uses prefabricated components as its core, constructing buildings through factory production and on-site assembly. Compared with traditional construction, prefabricated construction significantly shortens the construction cycle and improves building quality and construction efficiency. In prefabricated construction, major building components such as walls, floors, roofs, and columns are prefabricated in factories and then transported to the construction site for rapid assembly. The biggest advantage of this method is that it effectively reduces on-site construction time, and because the components are produced in a standardized factory environment, quality is better controlled. Prefabricated construction also has the advantage of being green and environmentally friendly. The production of prefabricated components effectively reduces construction waste during on-site construction, and the materials used can be recycled multiple times, meeting the requirements of modern architecture for sustainable development. At the same time, prefabricated construction reduces reliance on manpower and materials, saves resources, and reduces building energy consumption. With continuous technological advancements, prefabricated construction has gradually become an important development direction in the modern construction field, especially against the backdrop of accelerated urbanization, where its advantages of high efficiency, environmental protection, and energy conservation have attracted increasing attention from the construction industry.

[0003] In the prior art, such as the one disclosed in application number CN114164940A, this application provides a low-rise, multi-story, unsupported prefabricated ultra-high performance concrete frame structure, including: a prefabricated frame column, a cantilever beam provided on the side of the prefabricated frame column, and the protruding end of the steel bar inside the cantilever beam extending away from the end to form a first lapped steel bar.

[0004] A precast frame beam, wherein the protruding ends of the reinforcing bars inside the precast frame beam extend away from the ends to form a second lapped reinforcing bar;

[0005] A connecting support device is provided, which is in the form of an inverted double T-shaped steel plate. Both ends are detachably connected to the end of the cantilever beam and one end of the precast frame beam, respectively, to form a casting groove with an open top.

[0006] Temporary diagonal bracing, wherein both ends of the temporary diagonal bracing are detachably connected to the precast frame column and the end of the connecting support device near the precast frame beam, respectively.

[0007] The first lapped steel bar and the second lapped steel bar are both placed in the casting trench and overlapped. By pouring ultra-high performance concrete into the casting trench, the precast frame column and the precast frame beam are connected to form a whole.

[0008] In existing precast slab structures, the precast slabs still need to be pre-limited by protruding steel bars during use. Then, mortar is injected into the sleeve to fix the precast slabs. Moreover, when the partitions are connected to the frame columns, additional support structures are needed to pre-limit the partitions. However, the existing pre-fixing only uses half of the steel reinforcement structure for pre-limiting, resulting in poor pre-fixing effect. Subsequently, the partitions are fixed and limited by reinforced concrete, but there are additional structural obstacles during fixing, which affects the grouting effect. Summary of the Invention

[0009] Therefore, the purpose of this invention is to provide a multi-story frame structure for buildings and a construction method to solve the technical problem.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a multi-story frame structure for building construction, comprising multiple sets of precast frame columns stacked together, wall panels installed on both sides of each precast frame column, and engaging grooves provided at the top and bottom edges of each precast frame column, with limiting reinforcing bars installed inside the engaging grooves and arranged horizontally with the precast frame columns, and precast frame beams installed between two adjacent sets of precast frame columns, each precast frame beam having a protruding cement block at its top, and a guide rod connected to the top of the protruding cement block. The top of the precast frame beam has support platforms on both sides of the protruding cement block. The end of the precast frame beam is connected to a fixing block. Multiple sets of connecting sleeves are installed inside the fixing block. The precast frame beam is installed inside the locking groove. During installation, the limiting steel bar is inserted into the connecting sleeve. The side of the connecting sleeve is connected to a lower injection port and an upper discharge port, which extend to the outside of the fixing block. The top of the precast frame beam is connected to a floor slab. The bottom of the floor slab has a locking mechanism that matches the support platform.

[0011] By adopting the above technical solution, when installing precast frame beams, the precast frame beams can be initially limited by inserting limiting steel bars into the connecting sleeves. Then, grouting is performed inside the connecting sleeves to fix the precast frame beams. During the installation of floor slabs, the precast frame beams limit the floor slabs.

[0012] The invention is further configured such that two sets of floor slabs are symmetrically installed on the top of a set of precast frame beams, the bottom of the floor slabs are provided with connecting plate grooves, the floor slabs are attached to the support platform through the connecting plate grooves, the edges of the floor slabs are provided with locking tenons, and two adjacent sets of floor slabs on the precast frame beams are connected to each other by locking tenons, the locking tenons are provided with locking sleeves inside, and the locking sleeves are aligned with the guide rods.

[0013] Preferably, the floor slabs can be easily interlocked, and the interlocking tenons between the floor slabs can be used for positioning. Mortar is injected under the interlocking tenons to fix and limit the floor slabs.

[0014] The present invention is further configured such that a fixing ring is provided at both the top and bottom of the engaging sleeve, an arc groove is provided inside the engaging sleeve, and the edge of the arc groove is a angular structure, and multiple sets of corrugated grooves are provided on the inner wall of the engaging sleeve.

[0015] Preferably, the sleeve is easily fixed into the opening on the mortar tenon, and the arc groove can increase the contact area between the mortar and the sleeve after grouting, thereby improving the connection strength.

[0016] The invention is further configured such that a fixing bolt is connected to the top of the floor slab, and a grouting sleeve is connected to the bottom of the wall panel. When the wall panel is connected to the floor slab, the fixing bolt is inserted into the grouting sleeve, and a grouting pipe is also provided on the outside of the grouting sleeve.

[0017] Preferably, the wall panels can be easily connected to the floor slab.

[0018] The present invention is further configured such that multiple sets of reinforcing bars are installed inside the precast frame beam, and the end of the guide rod extends into the interior of the precast frame beam.

[0019] Preferably, it can improve the strength of the precast frame beams.

[0020] The invention is further configured such that the top of the support platform has multiple sets of guide grooves, and the guide grooves cut through the protruding cement block to cut the protruding cement block into multiple structures.

[0021] Preferably, this allows the mortar to flow above the connecting plate groove and the support platform during grouting, thus improving the connection effect.

[0022] The present invention is further configured such that the interior of the connecting sleeve is provided with guide ridges, and there are three sets of guide ridges. The three sets of guide ridges are evenly distributed on the inner wall of the connecting sleeve, and when the limiting steel bar enters the interior of the connecting sleeve, the guide ridges do not obstruct the movement of the limiting steel bar.

[0023] Preferably, the guide ridge can be used to conveniently limit the positioning of the reinforcing bar, and during use, the guide ridge can increase the contact area with the mortar.

[0024] A multi-story frame structure for building and a construction method thereof, the process comprising the following steps:

[0025] Step 1: First, install the precast frame columns on the ground. Then, install wall panels on both sides of the precast frame columns and fix and limit the bottom wall panels by grouting. Then, hoist the precast frame beams onto the outer locking grooves of the precast frame columns and slowly move the precast frame beams downwards.

[0026] Step 2: Align the precast frame beam with the limiting steel bar through the connecting sleeve opened at the bottom, insert the connecting sleeve into the outside of the limiting steel bar, and fix the fixing block into the locking groove to initially limit the precast frame beam;

[0027] Step 3: Lift the precast frame column above and move it above the precast frame beam. Align the locking groove at the bottom of the precast frame column with the fixing block at the top of the precast frame beam. At this time, the limiting steel bar at the bottom of the precast frame column is aligned with the opening at the top of the connecting sleeve. Slowly lower the precast frame column so that the limiting steel bar is inserted into the top of the connecting sleeve, thus completing the fixed installation of the precast frame beam.

[0028] Step 4: Next, mortar needs to be injected into the inside of the connecting sleeve. At this time, align the grouting equipment from the lower injection port and inject the mortar into the connecting sleeve. The mortar fills the connecting sleeve. Connect the limiting steel bars of the lower precast frame column to the limiting steel bars of the upper precast frame column. When the mortar is discharged from the upper outlet, seal the upper outlet and the lower injection port with a rubber plug.

[0029] Step 5: Install the floor slab. Hoist the floor slab to the precast frame beam, aligning the connecting slab groove with the precast frame beam and the locking sleeve in the mortise and tenon with the guide rod. Slowly lower the floor slab, insert the guide rod into the locking sleeve, and ensure the connecting slab groove is in contact with the support platform. At this point, the bottom of the floor slab is in contact with the top of the bottom wall panel, achieving initial fixation of the floor slab.

[0030] Step Six: Install the second set of floor slabs in the symmetrical position of the first set of floor slabs. The two sets of floor slabs are connected by interlocking tenons and mortars. After the installation of the two sets of floor slabs is completed, grout is injected into each set of interlocking sleeves using grouting equipment, so that the mortar fills the bottom of the interlocking tenons and mortars, thereby limiting and fixing the two sets of floor slabs.

[0031] In summary, the present invention has the following main beneficial effects:

[0032] This invention utilizes precast frame columns and precast frame beams. During installation, the two sets of precast frame columns limit the movement of the precast frame beams from above and below. First, one set of precast frame columns is fixed. Then, the fixing blocks of the precast frame beams are engaged in the engagement grooves, and the limiting reinforcing bars are inserted into the connecting sleeves to limit the movement of the precast frame beams. Next, the second set of precast frame columns is placed above the first set, and the engagement grooves and limiting reinforcing bars are aligned with the openings at the top of the precast frame beams, thus limiting the movement of the precast frame beams from above as well, improving their stability. Finally, grout is injected into the connecting sleeves from below to further fix the precast frame beams.

[0033] This invention also utilizes prefabricated frame beams and floor slabs. During the installation of the floor slab, the mortar is mutually locked and interlocked via side tenons. Then, grout is injected into the space above the prefabricated frame beams through the locking sleeve. The mortar flows to the floor slab below through the guide groove, allowing the floor slab to connect with the prefabricated frame beams through the mortar. This also allows the mortar to fix the floor slab from below, improving the connection effect. After the mortar is fixed, the guide rod can further ensure full contact with the mortar, thereby improving the connection effect between the floor slab and the mortar. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the connection between the precast frame columns and the precast frame beams of the present invention;

[0036] Figure 3 This is a structural schematic diagram of the cross-section of the prefabricated frame beam of the present invention;

[0037] Figure 4 This is a schematic diagram of the connecting sleeve of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure for fixing the prefabricated frame beams to the floor slab according to the present invention;

[0039] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the partial structure at point A in the middle;

[0040] Figure 7 This is a schematic diagram of the prefabricated frame beam of the present invention;

[0041] Figure 8 This is a schematic diagram of the floor slab structure viewed from below according to the present invention;

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

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Precast frame column; 101. Engaging groove; 102. Limiting reinforcement; 103. Metal edge; 2. Floor slab; 201. Engaging mortise and tenon; 202. Engaging sleeve; 2021. Fixing ring; 2022. Arc groove; 2023. Corrugated groove; 203. Fixing bolt; 204. Connecting plate groove; 3. Precast frame beam; 301. Reinforcing steel bar; 302. Protruding cement block; 303. Guide rod; 304. Support platform; 3041. Guide groove; 305. Fixing block; 306. Connecting sleeve; 3061. Lower injection port; 3062. Upper discharge port; 3063. Guide ridge; 4. Wall panel; 401. Grouting sleeve. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] The embodiments of the present invention will now be described.

[0047] Please see Figures 1 to 3 A multi-story frame structure for building includes multiple sets of precast frame columns 1, which are stacked together. Wall panels 4 are installed on both sides of the precast frame columns 1. The top and bottom edges of the precast frame columns 1 are provided with locking grooves 101. Limiting steel bars 102 are installed inside the locking grooves 101, and the limiting steel bars 102 are horizontally arranged with the precast frame columns 1.

[0048] Please see Figures 1 to 7A precast frame beam 3 is installed between two adjacent precast frame columns 1. A protruding cement block 302 is provided at the top of the precast frame beam 3. A guide rod 303 is connected to the top of the protruding cement block 302. Support platforms 304 are provided on both sides of the protruding cement block 302 at the top of the precast frame beam 3. Multiple guide grooves 3041 are provided at the top of the support platforms 304, and these guide grooves 3041 penetrate and cut through the protruding cement block 302, severing it into multiple structures. A fixing block 305 is connected to the end of the precast frame beam 3. Multiple connecting sleeves 306 are installed inside the fixing block 305. The precast frame beam 3 is installed inside the locking groove 101, and the limiting steel bar 102 is inserted into the connecting sleeve 306 during installation. The side of the connecting sleeve 306 is connected to the lower injection port 3061 and the upper outlet 3062, and the lower injection port 3061 and the upper outlet 3062 extend to the outside of the fixing block 305. The top of the precast frame beam 3 is connected to the floor slab 2. Two sets of floor slabs 2 are symmetrically installed on the top of a set of precast frame beams 3. The bottom of the floor slab 2 is provided with a connecting plate groove 204. The floor slab 2 fits against the support platform 304 through the connecting plate groove 204. The edge of the floor slab 2 is provided with a locking tenon 201. The two sets of floor slabs 2 on the precast frame beam 3 are connected to each other. The mortise and tenon joints 201 interlock and connect with each other. The mortise and tenon joints 201 have an internal interlocking sleeve 202, which aligns with the guide rod 303. Both the top and bottom of the interlocking sleeve 202 have retaining rings 2021. The internal part of the interlocking sleeve 202 has an arc-shaped groove 2022 with angular edges. The inner wall of the interlocking sleeve 202 has multiple sets of corrugated grooves 2023. During installation, the interlocking sleeve 202 inside the mortise and tenon joints 201 is aligned with the guide rod 303. The floor slab 2 is then slowly lowered, and the guide rod 303 is inserted into the interlocking sleeve 202, connecting to the plate groove 20. 4. The floor slab 2 is attached to the support platform 304, and at this time the bottom end of the floor slab 2 is attached to the top end of the bottom wall panel 4, thus achieving the initial fixation of the floor slab 2. Then, the second set of floor slabs 2 is installed in the symmetrical position of the first set of floor slabs 2. The two sets of floor slabs 2 are connected by the snap-fit ​​tenon 201. After the installation of the two sets of floor slabs 2 is completed, grouting is performed in each set of snap-fit ​​sleeves 202 by grouting equipment, so that the mortar fills the bottom of the snap-fit ​​tenon 201. The mortar is guided by multiple sets of guide grooves 3041, so that the mortar flows to the bottom of the connecting plate groove 204, increasing the connection area between the connecting plate groove 204 and the precast frame beam 3, thereby limiting and fixing the two sets of floor slabs 2.

[0049] For details regarding the above embodiments, please refer to [link / reference]. Figures 1 to 3 The top of the floor slab 2 is connected to a fixing bolt 203, and the bottom of the wall panel 4 is connected to a grouting sleeve 401. When the wall panel 4 is connected to the floor slab 2, the fixing bolt 203 is inserted into the grouting sleeve 401, and a grouting pipe is also provided on the outside of the grouting sleeve 401, so that the wall panel 4 can be fixed to the floor slab 2.

[0050] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 system Figure 3 Multiple sets of reinforcing steel bars 301 are installed inside the precast frame beam 3, and the end of the guide rod 303 extends into the interior of the precast frame beam 3, which can effectively increase the strength of the precast frame beam 3 and improve its stability.

[0051] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The connecting sleeve 306 has guide ribs 3063 inside, and there are three sets of guide ribs 3063. The three sets of guide ribs 3063 are evenly distributed on the inner wall of the connecting sleeve 306. When the limiting steel bar 102 enters the connecting sleeve 306, the guide ribs 3063 do not obstruct the movement of the limiting steel bar 102. When the limiting steel bar 102 is inserted, the guide ribs 3063 guide the direction of the limiting steel bar 102. During grouting, the guide ribs 3063 increase the contact area between the mortar and the connecting sleeve 306, thereby improving stability.

[0052] During installation, the precast frame column 1 is first installed on the ground. Then, wall panels 4 are installed on both sides of the precast frame column 1. The bottom wall panels 4 are fixed and limited using grouting (existing technology, not described again). Next, the precast frame beam 3 is hoisted onto the outer locking groove 101 of the precast frame column 1. The precast frame beam 3 is slowly moved downwards. At this time, the precast frame beam 3 is aligned with the limiting steel bar 102 through the connecting sleeve 306 at its bottom. The connecting sleeve 306 is inserted into the outer side of the limiting steel bar 102, and the fixing block 305 is locked inside the locking groove 101, initially limiting the precast frame beam 3. (At this time, the other end of the precast frame beam 3 is inserted into the locking groove 101 of another set of precast frame columns 1. This is not shown here for the sake of simplifying the model; the other set of precast frame columns 1 has the same structure as the previous set.) Then, the upper precast frame column 1 is hoisted up, and the precast frame... The column 1 is moved above the precast frame beam 3, aligning the locking groove 101 at the bottom of the precast frame column 1 with the fixing block 305 at the top of the precast frame beam 3. At this time, the limiting steel bar 102 at the bottom of the precast frame column 1 is aligned with the opening at the top of the connecting sleeve 306. The precast frame column 1 is slowly lowered so that the limiting steel bar 102 is inserted into the top of the connecting sleeve 306, completing the fixed installation of the precast frame beam 3. Then, mortar needs to be poured into the connecting sleeve 306. At this time, the grouting equipment is aligned from the lower injection port 3061, and the mortar is injected into the connecting sleeve 306. At this time, the mortar fills the connecting sleeve 306, and the limiting steel bar 102 of the lower precast frame column 1 is connected to the limiting steel bar 102 of the upper precast frame column 1. When the mortar is discharged from the upper discharge port 3062, the upper discharge port 3062 and the lower injection port 3061 are sealed with rubber plugs. After the mortar solidifies, the next step is carried out.

[0053] After the mortar has hardened, floor slab 2 needs to be installed. Floor slab 2 is hoisted and moved onto the precast frame beam 3, with the connecting groove 204 aligned with the precast frame beam 3. The engaging sleeve 202 within the tenon 201 is aligned with the guide rod 303. Floor slab 2 is slowly lowered, and the guide rod 303 is inserted into the engaging sleeve 202. The connecting groove 204 is then fitted against the support platform 304, and the bottom of floor slab 2 is fitted against the top of the bottom wall panel 4, achieving initial fixation of floor slab 2. Subsequently, the second set of floor slabs 2 is installed symmetrically to this set, with both sets... The floor slabs 2 are connected by interlocking tenons 201. After the installation of the two sets of floor slabs 2 is completed, grouting is performed in each set of interlocking sleeves 202 by grouting equipment. The mortar fills the area below the interlocking tenons 201, thereby limiting and fixing the two sets of floor slabs 2. This achieves the fixation of the floor slabs 2 to the precast frame beams 3, which can effectively improve the installation efficiency of the floor slabs 2 and improve the firmness. The injected grout will flow through the guide groove 3041 to the area below the connecting plate grooves 204 of each set, so that the mortar can further fix and limit the floor slabs 2 and improve the fixing effect.

[0054] Then, the wall panel 4 is installed at the edge of the floor slab 2. At this time, the bottom end of the wall panel 4 is aligned with the fixing bolt 203 through the grouting sleeve 401 (which is the same as the current connecting sleeve and belongs to the existing technology). The wall panel 4 is slowly lowered, and the grouting sleeve 401 is sleeved on the outside of the fixing bolt 203, thereby pre-fixing the wall panel 4. Then, mortar is injected into the grouting sleeve 401 to fix the wall panel 4 of the second layer. Then, the precast frame column 1, precast frame beam 3, wall panel 4 and floor slab 2 are assembled in sequence.

[0055] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A multi-story frame structure for building construction, comprising multiple sets of prefabricated frame columns (1), the multiple sets of prefabricated frame columns (1) being stacked, characterized in that: Wall panels (4) are installed on both sides of the precast frame column (1). A locking groove (101) is provided at both the top and bottom edges of the precast frame column (1). A limiting steel bar (102) is installed inside the locking groove (101), and the limiting steel bar (102) is horizontally positioned with the precast frame column (1). A precast frame beam (3) is installed between two adjacent sets of precast frame columns (1). A protruding cement block (302) is provided at the top of the precast frame beam (3). A guide rod (303) is connected to the top of the protruding cement block (302). Support platforms (304) are provided on both sides of the protruding cement block (302) at the top of the precast frame beam (3). The end of the frame beam (3) is connected to a fixing block (305). Multiple sets of connecting sleeves (306) are installed inside the fixing block (305). The precast frame beam (3) is installed inside the locking groove (101). During installation, the limiting steel bar (102) is inserted into the connecting sleeve (306). The side of the connecting sleeve (306) is connected to a lower injection port (3061) and an upper outlet (3062). The lower injection port (3061) and the upper outlet (3062) extend to the outside of the fixing block (305). The top of the precast frame beam (3) is connected to a floor slab (2). The bottom of the floor slab (2) is provided with a locking mechanism that matches the support platform (304). Two sets of floor slabs (2) are symmetrically installed on the top of a set of precast frame beams (3). The bottom of the floor slabs (2) is provided with a connecting plate groove (204). The floor slabs (2) are attached to the support platform (304) through the connecting plate groove (204). The edge of the floor slabs (2) is provided with a locking tenon (201). Two adjacent sets of floor slabs (2) on the precast frame beams (3) are connected to each other by locking tenons (201). The locking tenon (201) is provided with a locking sleeve (202) inside. The locking sleeve (202) is aligned with the guide rod (303).

2. A multi-story frame structure for building construction according to claim 1, characterized in that: The locking sleeve (202) has a fixing ring (2021) at both the top and bottom. The locking sleeve (202) has an arc groove (2022) inside, and the edge of the arc groove (2022) has a angular structure. The inner wall of the locking sleeve (202) has multiple sets of corrugated grooves (2023).

3. A multi-story frame structure for building construction according to claim 1, characterized in that: The top of the floor slab (2) is connected to a fixing bolt (203), and the bottom of the wall panel (4) is connected to a grouting sleeve (401). When the wall panel (4) is connected to the floor slab (2), the fixing bolt (203) is inserted into the grouting sleeve (401), and a grouting pipe is also provided on the outside of the grouting sleeve (401).

4. A multi-story frame structure for building construction according to claim 1, characterized in that: Multiple sets of reinforcing bars (301) are installed inside the precast frame beam (3), and the end of the guide rod (303) extends into the interior of the precast frame beam (3).

5. A multi-story frame structure for building construction according to claim 1, characterized in that: The top of the support platform (304) has multiple sets of guide grooves (3041), and the guide grooves (3041) cut through the protruding cement block (302) to cut the protruding cement block (302) into multiple structures.

6. A multi-story frame structure for building construction according to claim 1, characterized in that: The connecting sleeve (306) has a guide ridge (3063) inside, and there are three sets of guide ridges (3063). The three sets of guide ridges (3063) are evenly distributed on the inner wall of the connecting sleeve (306). When the limiting steel bar (102) enters the connecting sleeve (306), the guide ridge (3063) does not obstruct the movement of the limiting steel bar (102).

7. A multi-story frame structure for building and its construction method, characterized in that... The process of using a multi-story frame structure for building as described in any one of claims 1-6 includes the following steps: Step 1: First, install the precast frame columns on the ground. Then, install wall panels on both sides of the precast frame columns and fix the bottom wall panels by grouting. Then, hoist the precast frame beams onto the outer locking grooves of the precast frame columns and slowly move the precast frame beams downwards. Step 2: Align the precast frame beam with the limiting steel bar through the connecting sleeve opened at the bottom, insert the connecting sleeve into the outside of the limiting steel bar, and fix the fixing block into the locking groove to initially limit the precast frame beam; Step 3: Lift the precast frame column above and move it above the precast frame beam. Align the locking groove at the bottom of the precast frame column with the fixing block at the top of the precast frame beam. At this time, the limiting steel bar at the bottom of the precast frame column is aligned with the opening at the top of the connecting sleeve. Slowly lower the precast frame column so that the limiting steel bar is inserted into the top of the connecting sleeve, thus completing the fixed installation of the precast frame beam. Step 4: Next, mortar needs to be injected into the inside of the connecting sleeve. At this time, align the grouting equipment from the lower injection port and inject the mortar into the connecting sleeve. The mortar fills the connecting sleeve. Connect the limiting steel bars of the lower precast frame column to the limiting steel bars of the upper precast frame column. When the mortar is discharged from the upper outlet, seal the upper outlet and the lower injection port with a rubber plug. Step 5: Install the floor slab. Hoist the floor slab to the precast frame beam, aligning the connecting slab groove with the precast frame beam and the locking sleeve in the mortise and tenon with the guide rod. Slowly lower the floor slab, insert the guide rod into the locking sleeve, and ensure the connecting slab groove is in contact with the support platform. At this point, the bottom of the floor slab is in contact with the top of the bottom wall panel, achieving initial fixation of the floor slab. Step Six: Install the second set of floor slabs in the symmetrical position of the first set of floor slabs. The two sets of floor slabs are connected by interlocking tenons and mortars. After the installation of the two sets of floor slabs is completed, grout is injected into each set of interlocking sleeves using grouting equipment, so that the mortar fills the bottom of the interlocking tenons and mortars, thereby limiting and fixing the two sets of floor slabs.

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