Green energy-saving precast concrete slab reinforcing column structure

Abstract

The utility model discloses a green and energy-saving precast concrete slab reinforcing column structure, relates to the field of structure reinforcement, and aims to solve the problems that in the prior art, traditional column reinforcement independently adopts a cross section enlarging method, a carbon fiber method, a steel wrapping method and the like, traditional cross section enlarging needs templates and concrete, the construction period is long, and labor is wasted; and a carbon fiber method, a steel wrapping method and the like are difficult to meet structural calculation requirements. The lower end of the original structure column is connected with an original column structure foundation, the middle of the original structure column is connected with a lower floor slab, the upper end of the original structure column is connected with a top floor slab, and the outer side end face of the original structure column is encapsulated between the upper end of the original column structure foundation and the lower floor slab through four first prefabricated concrete slabs. The portion, between the lower floor and the top floor, of the end face of the outer side of the original structure column is wrapped by four second prefabricated concrete slabs.

Description

Technical Field

[0001] This utility model relates to the field of structural reinforcement, specifically a green and energy-saving precast concrete slab reinforced column structure. Background Technology

[0002] Currently, column reinforcement generally adopts cast-in-place construction, and precast concrete components are almost never used. The development of prefabricated construction is mainly for new buildings, and it is rarely used in the reinforcement of existing buildings. For urban renewal projects, especially in small streets and alleys, continuous transportation of commercial concrete is very difficult due to the surrounding environment. The secondary transportation time of concrete is long and the efficiency is low. The interval between concrete pouring is long and the quality of concrete pouring is not easy to control.

[0003] For example, according to authorization announcement number CN210369998U, a precast concrete column reinforcement component and a concrete column reinforcement structure including the same are disclosed. The precast reinforcement component includes a right-angle precast component, which comprises a right-angle plate and a supporting frame pre-installed inside the right-angle plate. The supporting frame includes longitudinal supporting bars and stirrups fixedly connected to the longitudinal supporting bars. Connecting joints for connecting to the original building frame are fixedly provided on the upper and lower end faces of the right-angle plate, and butt joints for connecting with other right-angle precast components are fixedly provided on the side end faces of the precast component. The concrete column reinforcement structure includes two interlocking precast reinforcement components. This utility model's precast concrete column reinforcement component can reinforce concrete columns, requiring only on-site assembly during use, which helps reduce construction errors and ensure project quality. Furthermore, standardized assembly helps save costs.

[0004] Traditional column reinforcement methods, such as enlarging the cross-section, carbon fiber reinforcement, and steel cladding, require formwork and concrete, resulting in long construction periods and high labor costs. Carbon fiber and steel cladding methods often fail to meet structural calculation requirements. Therefore, there is an urgent market need to develop a green and energy-saving precast concrete slab-reinforced column structure to help solve these existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a green and energy-saving precast concrete slab reinforced column structure to solve the problems mentioned in the background art, such as the traditional column reinforcement methods of increasing the cross-section, carbon fiber method, and steel encasing method. Traditional methods of increasing the cross-section require formwork and concrete, have long construction cycles, and are labor-intensive. Carbon fiber method and steel encasing method are difficult to meet the structural calculation requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a green and energy-saving precast concrete slab reinforced column structure, comprising an original column foundation, the lower end of the original column being connected to the original column foundation, a lower floor slab connected in the middle of the original column, and a top floor slab connected to the upper end of the original column. Four first precast concrete slabs are used to enclose the outer end face of the original column between the upper end of the original column foundation and the lower floor slab, and four second precast concrete slabs are used between the outer end face of the original column and the lower floor slab. The precast concrete slab is encapsulated. Multiple grouting sleeves are provided at the lower end of both the first and second precast concrete slabs. Multiple connecting sleeves are provided at the upper end of both the first and second precast concrete slabs. The lower end of the lower floor slab and the top floor slab are connected to the original structural beam in a cross shape. Multiple vertical perforation holes are provided on the lower floor slab, the top floor slab, and the original structural beam. A first screw is provided inside the vertical perforation hole of the lower floor slab, and a second screw is provided inside the vertical perforation hole of the top floor slab.

[0007] Preferably, a mortar seat is cast at the lower end of the outer end of the original column structure foundation and the upper end of the lower floor slab. The lower ends of the first and second precast concrete slabs are respectively attached to the mortar seats on the upper end of the original column structure foundation and the upper end of the lower floor slab.

[0008] Preferably, a ring of pre-embedded reinforcing bars is provided inside the original column structure foundation. The upper end of the pre-embedded reinforcing bars passes through the mortar seat and is inserted into the grouting sleeves at the lower end of the four first precast concrete slabs. A grouting port is provided between the lower end of the grouting sleeve and the outer end face of the first precast concrete slab, and a grout outlet is provided between the upper end of the grouting sleeve and the outer end face of the first precast concrete slab. The upper end of the pre-embedded reinforcing bars is fixed by grouting material injected into the grouting sleeves of the first precast concrete slabs along the grouting port.

[0009] Preferably, the outer end faces of the first and second precast concrete slabs are each provided with a plurality of countersunk bolt holes, and the outer end faces of the original structural column are each provided with a plurality of countersunk bolt holes. The first and second precast concrete slabs are fixedly connected to the original structural column by countersunk bolts inserted into the countersunk bolt holes. The gaps between the first and second precast concrete slabs and the original structural column are all connected by adhesive.

[0010] Preferably, the upper ends of the first and second precast concrete slabs are provided with reserved slots, and the cross-shaped structural beams at the lower ends of the lower floor slab and the top floor slab are respectively inserted into the reserved slots on the four first precast concrete slabs and the four second precast concrete slabs.

[0011] Preferably, the lower end of the first screw is inserted into the connecting sleeve on the first precast concrete slab and fixed by a threaded connection, the upper end of the first screw passes through the mortar seat at the upper end of the lower floor slab and is inserted into the grouting sleeve of the second precast concrete slab, and the upper end of the first screw is fixed by grouting material being injected along the grouting port in the grouting sleeve of the second precast concrete slab.

[0012] Preferably, the structural beam is provided with a horizontal through hole, and a connecting steel bar is provided inside the horizontal through hole. Two reserved recesses are provided at the upper end of the outer end face of the first precast concrete slab and the second precast concrete slab. The two ends of the connecting steel bar extend into the two reserved recesses and are welded to the transverse stirrups. The reserved recesses are filled with mortar.

[0013] Preferably, the lower end of the second screw is inserted into the connecting sleeve on the second precast concrete slab and fixed by a threaded connection.

[0014] Preferably, the upper ends of multiple second screws extend out of the top floor slab and are jointly fixed and enclosed by a concrete seat.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, by setting the lower end of the first precast concrete slab and the second precast concrete slab, multiple countersunk bolt holes are arrayed on the outer end faces of both the first and second precast concrete slabs, and multiple countersunk bolt holes are arrayed on the outer end faces of the original structural column. The first and second precast concrete slabs are fixedly connected to the original structural column by countersunk bolts inserted into the countersunk bolt holes. The first and second precast concrete slabs and the original structural column are fixed by countersunk bolts, which reduces the water used for on-site concrete pouring, eliminates the need for formwork and concrete pouring, reduces labor costs, reduces the amount of on-site formwork, and increases construction speed.

[0017] 2. In this utility model, by setting a mortar seat, a mortar seat is poured on the upper surface of the original column structure foundation and the upper surface of the lower floor slab, and at the lower end of the outer end of the original structural column. After the mortar seat seals the gap between the lower end of the first precast concrete slab and the upper surface of the original column structure foundation, and the gap between the lower end of the second precast concrete slab and the upper surface of the lower floor slab, it wraps the pre-installed steel bars to prevent moisture from entering the gap and corroding the pre-installed steel bars.

[0018] 3. In this utility model, by setting up a concrete seat, the upper ends of multiple second screws extend out of the top floor slab and are jointly fixed and sealed by the concrete seat. After bending the upper ends of multiple second screws with the concrete seat, they are jointly fixed and sealed by the concrete seat to prevent the upper ends of the second screws from being affected by the external air. Attached Figure Description

[0019] Figure 1 This is a front view of a green and energy-saving precast concrete slab reinforced column structure according to this utility model;

[0020] Figure 2 This is a CC cross-sectional view of the present invention;

[0021] Figure 3 This is a sectional view of the present invention.

[0022] Figure 4 This is a detailed enlarged view of part A of the present invention;

[0023] Figure 5 This is a detailed enlarged view of part B of this utility model.

[0024] In the diagram: 1. Original column foundation; 101. Pre-installed reinforcing bars; 102. Mortar base; 2. Original structural column; 201. Lower floor slab; 202. Vertical through hole; 203. First bolt; 204. Top floor slab; 205. Structural beam; 206. Horizontal through hole; 207. Connecting reinforcing bars; 208. Countersunk bolt hole; 3. First precast concrete slab; 301. Vertical reinforcing bars; 302. Horizontal stirrups; 303. Reserved slot; 304. Reserved notch; 305. Connecting sleeve; 306. Countersunk bolt hole; 307. Countersunk bolt; 4. Grouting sleeve; 401. Grouting port; 402. Grout outlet; 5. Second precast concrete slab; 501. Second bolt; 502. Concrete base. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figure 1-5This utility model provides an embodiment of a green and energy-saving precast concrete slab reinforced column structure, including an original column foundation 1, an original column 2 connected to the original column foundation 1 at its lower end, a lower floor slab 201 connected to the middle of the original column 2, and a top floor slab 204 connected to the upper end of the original column 2. Four first precast concrete slabs 3 enclose the outer end face of the original column 2 between the upper end of the original column foundation 1 and the lower floor slab 201. Four second precast concrete slabs 5 enclose the outer end face of the original column 2 between the lower floor slab 201 and the top floor slab 204. Multiple grouting sleeves 4 are provided at the lower ends of both the first and second precast concrete slabs 3 and 5. Multiple connecting sleeves 305 are provided at the upper end of the two precast concrete slabs 5. The lower floor slab 201 and the upper floor slab 204 are connected to the original structural beam 205 in a cross shape at their lower ends. Multiple vertical drilled holes 202 are provided on the lower floor slab 201, the upper floor slab 204 and the original structural beam 205. A first screw 203 is provided inside the vertical drilled hole 202 of the lower floor slab 201, and a second screw 501 is provided inside the vertical drilled hole 202 of the upper floor slab 204. A mortar seat 102 is poured at the lower end of the upper surface of the original column foundation 1 and the upper surface of the lower floor slab 201, and at the lower end of the outer end of the original structural column 2. The lower ends of the first precast concrete slab 3 and the second precast concrete slab 5 are respectively connected to the original column foundation. The mortar seat 102 on the upper surface of the foundation 1 and the upper surface of the lower floor slab 201 are fitted together, so that the gap between the lower end of the first precast concrete slab 3 and the upper surface of the original column foundation 1 is filled by the mortar seat 102. A ring of pre-embedded steel bars 101 is set inside the original column foundation 1. The upper end of the pre-embedded steel bars 101 passes through the mortar seat 102 and is inserted into the grouting sleeves 4 at the lower end of the first precast concrete slab 3 respectively. A grouting port 401 is set between the lower end of the grouting sleeve 4 and the outer end face of the first precast concrete slab 3. A grout outlet 402 is set between the upper end of the grouting sleeve 4 and the outer end face of the first precast concrete slab 3. The upper end of the pre-embedded steel bars 101 is filled with grouting material through the grouting port 402 inside the grouting sleeve 4 of the first precast concrete slab 3. 01. Grouting and fixing: The original column foundation 1 is fixed to the lower end of the first precast concrete slab 3 by pre-installed steel bars 101. After the mortar seat 102 seals the gap between the lower end of the first precast concrete slab 3 and the upper end of the original column foundation 1, it wraps the pre-installed steel bars 101 to prevent moisture from entering the gap and corroding the pre-installed steel bars 101. Multiple countersunk bolt holes 306 are arranged in an array on the outer end face of the first precast concrete slab 3 and the second precast concrete slab 5. Multiple countersunk bolt holes 208 are arranged in an array on the outer end face of the original structural column 2. The first precast concrete slab 3 and the second precast concrete slab 5 are fixedly connected to the original structural column 2 by countersunk bolts 307 inserted into the countersunk bolt holes 208 along the countersunk bolt holes 306.The gaps between the first precast concrete slab 3 and the second precast concrete slab 5 and the original structural column 2 are all connected by adhesive. The first precast concrete slab 3 and the second precast concrete slab 5 are fixed to the original structural column 2 using countersunk bolts 307. This reduces the amount of water used for on-site concrete pouring, eliminates the need for formwork, reduces labor costs, and decreases the amount of on-site formwork, increasing construction speed. Both the first precast concrete slab 3 and the second precast concrete slab 5 have pre-reserved slots 303 at their upper ends. The cross-shaped structural beams 205 at the lower end of the lower floor slab 201 and the top floor slab 204 are respectively inserted into the pre-reserved slots 303 on the four first precast concrete slabs 3 and the four second precast concrete slabs 5.

[0027] Furthermore, the lower end of the first screw 203 is inserted into the connecting sleeve 305 on the first precast concrete slab 3 and fixed by threaded connection. The upper end of the first screw 203 passes through the mortar seat 102 at the upper end of the lower floor slab 201 and is inserted into the grouting sleeve 4 of the second precast concrete slab 5. The upper end of the first screw 203 is fixed by grouting along the grouting port 401 in the grouting sleeve 4 of the second precast concrete slab 5 with mortar, so that the first precast concrete slab 3, the lower floor slab 201 and the second precast concrete slab 5 are fixedly connected to form an integral structure to encapsulate and reinforce the original structural column 2. A horizontal through hole 206 is provided on the structural beam 205, and a connecting steel bar 207 is provided inside the horizontal through hole 206. Two reserved notches 304 are provided on the upper end of the outer end face of the first precast concrete slab 3 and the second precast concrete slab 5 for connection. The two ends of the reinforcing bar 207 extend into the two reserved recesses 304 and are welded to the transverse stirrups 302. The reserved recesses 304 are filled with mortar to fix the first precast concrete slab 3 and the second precast concrete slab 5 to the cross-shaped structural beam 205, thereby improving the overall strength of the reinforced structure. The lower end of the second screw 501 is inserted into the connecting sleeve 305 on the second precast concrete slab 5 and fixed by threaded connection, thereby fixing the upper end of the second precast concrete slab 5 to the top floor slab 204. The upper ends of multiple second screws 501 extend out of the top floor slab 204 and are fixed and sealed together by concrete seats 502. After bending the upper ends of multiple second screws 501 by concrete seats 502, they are fixed and sealed together by concrete seats 502 to prevent the upper ends of the second screws 501 from being corroded by external air.

[0028] The construction of this precast concrete slab reinforced column structure includes the following steps:

[0029] Step 1: Transport multiple first precast concrete slabs 3 and second precast concrete slabs 5 to the reinforcement site. Fix multiple pre-installed steel bars 101 around the outside of the original structural column 2 inside the original column foundation 1. Pour a mortar seat 102 around the bottom of the multiple pre-installed steel bars 101. Attach the four first precast concrete slabs 3 to the outer end face of the original structural column 2 respectively, and insert the upper end of the pre-installed steel bars 101 into the grouting sleeve 4 at the lower end of the four first precast concrete slabs 3 respectively. Pour grouting material into the grouting sleeve 4 from the grout outlet 402 until the grouting material overflows from the grouting outlet 401.

[0030] Step 2: Fix the pre-installed steel bars 101 to the first precast concrete slab 3. Simultaneously construct vertical perforation holes 202 in the lower floor slab 201 and its lower structural beam 205. Insert the pre-reserved slots 303 on the upper ends of the four first precast concrete slabs 3 into the cross-shaped structural beam 205. Insert multiple first screws 203 into the vertical perforation holes 202 on the lower floor slab 201. Insert the lower ends of the first screws 203 into the connecting sleeves 305 on the first precast concrete slabs 3 and fix them with threads.

[0031] Step 3: The first precast concrete slab 3 and the original structural column 2 are fixedly connected by countersunk bolts 307 inserted into countersunk bolt holes 208 along countersunk bolt holes 306. Horizontal drill holes 206 are constructed on the lower structural beam 205 of the lower floor slab 201, and connecting steel bars 207 are inserted into the horizontal drill holes 206. The two ends of the connecting steel bars 207 extend into the two reserved recesses 304 and are welded to the transverse stirrups 302. After welding, the reserved recesses 304 are sealed with mortar.

[0032] Step 4: Extend the upper end of the lower floor slab 201 from the upper end of the multiple first screws 203. Pour a mortar seat 102 at the lower end of the exposed end of the first screw 203. Fit the four second precast concrete slabs 5 with the original structural columns 2, so that the upper end of the first screw 203 is inserted into the grouting sleeve 4 at the lower end of the second precast concrete slab 5. Fix it with mortar in the same step. Fix the second precast concrete slab 5 with the original structural columns 2 with countersunk bolts 307 in the same step. Fix the upper end of the second precast concrete slab 5 with the structural beam 205 with connecting steel bars 207 in the same step.

[0033] Step 5: Drill vertical holes 202 in the top floor slab 204, insert the second screw 501 into the vertical holes 202 in the top floor slab 204, so that the lower end of the second screw 501 is inserted into the connecting sleeve 305 on the second precast concrete slab 5 and fixed with threads. The upper end of the second screw 501 extends out of the upper surface of the top floor slab 204 and is bent. After the upper end of the second screw 501 is bent, it is fixed and sealed with concrete seat 502, and the reinforcement is completed. All holes must be detected in advance to avoid collision with the reinforcing bars when drilling.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A green and energy-saving precast concrete slab reinforced column structure, comprising the original column structure foundation (1), characterized in that: The original structural column (2) is connected to the original column foundation (1) at its lower end. The original structural column (2) is connected to the lower floor slab (201) in the middle. The original structural column (2) is connected to the top floor slab (204) at its upper end. The outer end face of the original structural column (2) is enclosed between the upper end of the original column foundation (1) and the lower floor slab (201) by four first precast concrete slabs (3). The outer end face of the original structural column (2) is enclosed between the lower floor slab (201) and the top floor slab (204) by four second precast concrete slabs (5). Multiple grouting holes are provided at the lower end of the first precast concrete slab (3) and the second precast concrete slab (5). Sleeve (4), multiple connecting sleeves (305) are provided at the upper end of the first precast concrete slab (3) and the second precast concrete slab (5), the lower floor slab (201) and the top floor slab (204) are connected to the cross-shaped original structural beam (205), multiple vertical through holes (202) are provided on the lower floor slab (201), the top floor slab (204) and the original structural beam (205), a first screw (203) is provided in the vertical through hole (202) of the lower floor slab (201), and a second screw (501) is provided in the vertical through hole (202) of the top floor slab (204).

2. The green and energy-saving precast concrete slab reinforced column structure according to claim 1, characterized in that: A mortar seat (102) is cast on the lower end of the outer side of the original column (2) on the upper end of the original column foundation (1) and the lower end of the lower floor slab (201). The lower end of the first precast concrete slab (3) and the lower end of the second precast concrete slab (5) are respectively attached to the mortar seat (102) on the upper end of the original column foundation (1) and the lower floor slab (201).

3. The green and energy-saving precast concrete slab reinforced column structure according to claim 2, characterized in that: The original column foundation (1) is provided with a ring of pre-installed steel bars (101). The upper end of the pre-installed steel bars (101) passes through the mortar seat (102) and is inserted into the grouting sleeves (4) at the lower end of the four first precast concrete slabs (3). A grouting port (401) is provided between the lower end of the grouting sleeve (4) and the outer end face of the first precast concrete slab (3). A grout outlet (402) is provided between the upper end of the grouting sleeve (4) and the outer end face of the first precast concrete slab (3). The upper end of the pre-installed steel bars (101) is fixed by grouting material along the grouting port (401) in the grouting sleeve (4) of the first precast concrete slab (3).

4. The green and energy-saving precast concrete slab reinforced column structure according to claim 1, characterized in that: Multiple countersunk bolt holes (306) are arranged in an array on the outer end face of the first precast concrete slab (3) and the second precast concrete slab (5). Multiple countersunk bolt holes (208) are arranged in an array on the outer end face of the original structural column (2). The first precast concrete slab (3) and the second precast concrete slab (5) are fixedly connected to the original structural column (2) by countersunk bolts (307) inserted into the countersunk bolt holes (208) along the countersunk bolt holes (306). The gaps between the first precast concrete slab (3) and the second precast concrete slab (5) and the original structural column (2) are all connected by adhesive.

5. The green and energy-saving precast concrete slab reinforced column structure according to claim 1, characterized in that: The first precast concrete slab (3) and the second precast concrete slab (5) are provided with reserved slots (303) at their upper ends. The cross-shaped structural beams (205) at the lower end of the lower floor slab (201) and the top floor slab (204) are respectively inserted into the reserved slots (303) on the four first precast concrete slabs (3) and the four second precast concrete slabs (5).

6. The green and energy-saving precast concrete slab reinforced column structure according to claim 1, characterized in that: The lower end of the first screw (203) is inserted into the connecting sleeve (305) of the first precast concrete slab (3) and fixed by threaded connection. The upper end of the first screw (203) passes through the mortar seat (102) at the upper end of the lower floor slab (201) and is inserted into the grouting sleeve (4) of the second precast concrete slab (5). The upper end of the first screw (203) is fixed by grouting material along the grouting port (401) in the grouting sleeve (4) of the second precast concrete slab (5).

7. The green and energy-saving precast concrete slab reinforced column structure according to claim 1, characterized in that: The structural beam (205) is provided with a horizontal through hole (206), and a connecting steel bar (207) is provided inside the horizontal through hole (206). The upper part of the outer end face of the first precast concrete slab (3) and the second precast concrete slab (5) is provided with two reserved recesses (304). The two ends of the connecting steel bar (207) extend into the two reserved recesses (304) respectively and are welded to the transverse stirrups (302). The reserved recesses (304) are filled with mortar.

8. The green and energy-saving precast concrete slab reinforced column structure according to claim 1, characterized in that: The lower end of the second screw (501) is inserted into the connecting sleeve (305) on the second precast concrete slab (5) and fixed by threaded connection.

9. A green and energy-saving precast concrete slab reinforced column structure according to claim 8, characterized in that: Multiple second screws (501) extend from the top floor slab (204) and are jointly fixed and enclosed by concrete (502).

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